KR20220028833A - Kitchen hood - Google Patents

Abstract

The present invention is to provide a kitchen hood that can detect the position of a contamination source and adjust the height of suction grills according to the position of the contamination source. The kitchen hood according to the present invention has a first housing (100) and a second housing (200) that slides in and out of the first housing (100). Air is sucked through suction grills (210) on both sides of the second housing (200). Foreign substances are mixed in the air sucked through at least one suction grill (210), and the foreign substances attached to internal parts can be removed through steam. The steam is sprayed through nozzles (672) in steam distributors (670, 670'). The steam sprayed through the nozzles (672) is condensed water to be collected in a condensed water collector (650), delivered to a liquid storage container (610), and discarded to the outside.

Description

Kitchen hood

The present disclosure relates to a kitchen hood.

Cooking often results in the release of harmful fumes, gases, oils or pollutants into the indoor air. Many kitchens have a kitchen hood installed above the stove to drain the remaining contaminants, and if not properly managed, the efficiency of the kitchen hood decreases, increasing the amount of harmful contaminants remaining in the kitchen.

A recent study has shown that most kitchen hood owners do not regularly maintain or clean their kitchen hoods. However, when the kitchen hood is not properly maintained, oil that accumulates under the kitchen hood or remains in the air can be caused by Staphylococcus aureus ("staph"), Escherichia coli ("E. coli" (E) coli) and Streptococcus pneumoniae (which can cause meningitis, pneumonia, sinusitis and other infections).

In addition, if the kitchen hood does not operate properly, during cooking such as fine dust, oil mist, carbon monoxide, nitrogen dioxide, formaldehyde, volatile organic compounds, soot (Black Carbon), and polycyclic aromatics hydrocarbons. The harmful substances that are generated can spread throughout the kitchen. These bacteria and substances can pose a health hazard and further reduce the efficiency of the kitchen hood.

In the kitchen, harmful gas containing 15-40 nm particles generated during cooking is condensed with oil to generate fine dust of 1 to 10 μm. For example, during cooking, hazardous substances such as fine dust, formaldehyde, nitrogen dioxide, volatile organic compounds, polycyclic aromatic hydrocarbons, black carbon (soot) gases and/or volatile organic compounds may appear.

Initial particles (volatile organic compounds and harmful substances such as nitrogen dioxide) with a size of about 15-40 nm are generated during food cooking, and the size of these particles makes fine dust when combined with water and oil. Harmful gases generated during cooking are coated with oil vapor or mist. Vapors containing harmful gases, once accumulated in a room, are not easily removed and remain indoors for a long time.

WO 201709534 A1 discloses an automatically moving kitchen hood having a protrusion installed behind a stove or a suction port resembling a faucet. When it detects a heat source, the suction port moves over that heat source. The suction port moves in the left and right direction, and can cover only one cooking vessel. Since such a kitchen hood is installed on the floor behind the stove instead of on the wall or ceiling, it may be difficult to install, and harmful gases may not be emitted to the outside.

KR 10-0612464 B1 discloses a kitchen hood having a liftable exhaust drive motor. A hood and a suction grill are provided just above the cooktop, which increases the chance of grease dripping back to the food and may reduce the efficiency of air intake from one side.

KR 10-1830811 B1 discloses a ceiling-mounted kitchen hood in which water and detergent are periodically sprayed through a nozzle. Sewage and detergent are discharged from the drain pipe, and the installation of the kitchen hood may be limited by the drain pipe.

KR 10-1111077 B1 discloses a range hood system in which sensors installed at the lower end of the range hood detect temperature, odor, and smoke, and rotate a fan to exhaust air. Since the position of the range hood is fixed from the polluting source, effective exhaust is difficult, and in order to remove the pollutant with the same efficiency, the volume, air volume, and noise of the fan motor increase.

In the conventional kitchen hood including these prior documents, the air intake port is fixed or the air intake port is not adaptively changed to the location of the pollutant, so the efficiency of air purification is reduced. In addition, when a kitchen hood is installed on the top of the cooking device, the suction port maintains a constant distance regardless of the distance to the cooking tool placed on the cooking device and whether or not heat is generated from the heat generating unit, and air is sucked in at a constant air volume to effectively clean the air. There is a problem that this cannot be done. In addition, there is a problem that the internal cleaning does not proceed effectively.

These citations are hereby incorporated by reference, where appropriate, for additional or alternative details, features and/or pertinent teaching of technical background.

(Prior Document 1) WO 201709534 A1 (Prior Document 2) KR 10-0612464 B1 (Prior Document 3) KR 10-1830811 B1 (Prior Document 4) KR 10-1111077 B1

It is an object of the present disclosure to provide an autonomous kitchen hood that operates automatically and cleans itself. This kitchen hood can reduce or eliminate vapors, odors, dust, oil mist, and harmful substances, and can provide ventilation inside the kitchen.

It is an object of the present disclosure to provide a kitchen hood having a height-adjustable suction grill in order to better filter out contaminants in the air. This kitchen hood can detect the location of the pollutant and adjust the height of the suction grill according to the location of the pollutant.

It is an object of the present disclosure to provide a kitchen hood including a filter or a suction grill that is easy to disassemble and is portable and replaceable.

An object of the present disclosure is to provide a kitchen hood capable of communicating with a cooking device located below. The kitchen hood can determine whether the power of the cooking device is turned on/off through communication with the cooking device, and in addition, the heat generating unit (eg, cooker, stove, induction, etc.) installed in the cooking device is turned on/off can also be judged. The kitchen hood may adaptively operate according to operating conditions of the cooking device and the heat generating unit.

It is an object of the present disclosure to provide a kitchen hood having automatic lighting configured to illuminate the kitchen or stove when a user enters or approaches the kitchen hood. The kitchen may further include sterilizing lighting (eg, ultraviolet light-emitting diode: LED) to further reduce contamination of the kitchen hood and/or to sterilize a stove located under the kitchen hood.

SUMMARY OF THE INVENTION It is an object of the present disclosure to provide a kitchen hood having a user interface (eg, a display and/or a light) capable of displaying information related to the operation of the kitchen hood on a display or through light. The kitchen hood may have an additional user interface (eg, a touch screen or a speaker) to allow a user to operate the kitchen hood. Users can remotely control the kitchen hood. This kitchen hood can have Wi-Fi and/or Bluetooth modules for control via mobile or web applications. This display may show a service confirmation for the user to remind the user to check filters and sensors.

An object of the present disclosure is to provide a kitchen hood capable of adjusting the height of a suction grill according to a distance from an object existing below. The kitchen hood may detect a distance between a cooking device installed below and a cooking tool placed on the cooking device, and may also sense a user's hand during cooking. The height of the suction grill can be adjusted according to this sensing distance.

An object of the present disclosure is to provide a kitchen hood capable of measuring air quality in the air and adjusting the height of a suction grill in response to the measured air quality measurement value. When the air quality is poor, the intake grill can be lowered to expose more areas to the air, thereby increasing the amount of air intake.

An object of the present disclosure is to provide a kitchen hood capable of detecting an object below and controlling opening and closing of left and right dampers of a suction grill according to the position of the detected object. When the position of the cooking tool is sensed in the kitchen, the left and/or right damper corresponding to the position of the corresponding cooking tool is opened to increase the efficiency of air cleaning.

It is an object of the present disclosure to provide a kitchen hood capable of detecting contaminants in the air and automatically purifying air based on a detected value of the contaminants. This kitchen hood can continuously detect contaminants such as oil, dust, odors, nitrogen dioxide, carbon monoxide, carbon dioxide, smoke, and/or formaldehyde and can operate properly for 24 hours.

An object of the present disclosure is to provide a kitchen hood that operates 24 hours a day and discharges polluted air from the kitchen. Although this kitchen hood may be installed on the top of the cooking device to discharge contaminants from the cooking device, it can detect the air condition even when the cooking device is turned off and perform an air purification function for 24 hours.

It is an object of the present disclosure to provide a kitchen hood capable of adjusting the height of a suction grill according to an air quality condition of ambient air. In poorer air quality, the suction grill can be lowered to bring the suction grill closer to the contaminants. This makes it possible to increase the air cleaning effect.

An object of the present disclosure is to provide a kitchen hood capable of controlling an air volume according to an air quality condition of ambient air. The air quality sensor measures the air quality, and the air volume can be adjusted for effective air intake according to the measured air quality condition or level. This air volume can be determined by the rotation speed of the fan. The poorer the air quality, the faster the airflow can be, and the pollutants can be discharged faster. If any one of the plurality of air quality conditions is the highest level, the maximum air volume may be generated.

It is an object of the present disclosure to provide a kitchen hood capable of controlling the opening and closing of left and right dampers of a suction grill according to an air quality condition of the surrounding air. By opening the left and/or right dampers corresponding to the air quality condition and the position of the cooking utensils, it is possible to increase the efficiency of air cleaning.

An object of the present disclosure is to provide a kitchen hood that measures an air quality condition and displays information on the measured air quality condition and air volume information corresponding thereto on a display. The user can visually confirm the air quality information and air volume information displayed on the display, thereby allowing additional other actions to be taken.

It is an object of the present disclosure to provide a kitchen hood capable of adjusting the height of a suction grill according to the temperature of ambient air. In this kitchen hood, the temperature of the heat generating part of the cooking device is sensed using the difference between the air temperature of the upper part and the air temperature of the left and right sides in this kitchen hood. can The greater the difference between the upper and left and right temperatures, the more the suction grill can be lowered.

An object of the present disclosure is to provide a kitchen hood capable of adjusting the air volume according to the temperature of the surrounding game. In this kitchen hood, using the difference between the upper air temperature and the left and right air temperatures, the pollution state of the surrounding air is judged.

It is an object of the present disclosure to provide a kitchen hood capable of controlling the opening and closing of left and right dampers of a suction grill according to the temperature of ambient air. It is possible to increase the efficiency of air cleaning by measuring the temperature of several places around, determining the location of the pollutant according to the difference between the temperatures, and opening the left and/or right dampers corresponding to the location of the pollutant.

It is an object of the present disclosure to provide a kitchen hood that allows automatic steam cleaning therein. The kitchen hood can be steam cleaned periodically (eg once a month) or automatically based on a detected value of a specific contamination level.

An object of the present disclosure is to provide a kitchen hood capable of automatically withdrawing a liquid container storing a detergent solution for internal steam cleaning. When the steam cleaning mode is selected in the kitchen hood, the liquid container is automatically drawn out from the inside of the second housing, and when the liquid container is drawn back into the inside of the second housing, steam cleaning may be possible. By automatically withdrawing the liquid container inside the second housing, it is provided for convenience of use. In addition, it is possible to automatically detect the withdrawal of the liquid container and notify the user.

An object of the present disclosure is to provide a kitchen hood capable of outputting a voice guidance for each step from the start to the end of steam cleaning. This kitchen hood can have a speaker, a microphone, and voice recognition software so that the kitchen hood can be controlled through voice guidance.

An object of the present disclosure is to provide a kitchen hood capable of automatically adjusting the height of a suction grill for steam cleaning. In order to put the detergent solution into the liquid container during steam cleaning, the installed second housing of the suction grill is automatically lowered, and when the liquid container is introduced after adding the detergent solution, the second housing can be automatically raised to a position where steam cleaning is possible.

SUMMARY OF THE INVENTION An object of the present disclosure is to provide a kitchen hood for drying the inside when steam cleaning is performed for a preset time and steam cleaning is completed. When the steam cleaning is complete, the fan can be rotated to dry the inside by the sucked air.

An object of the present disclosure is to spray steam for cleaning the inside of a kitchen hood at a closer distance to a target point.

An object of the present disclosure is to simultaneously spray steam for cleaning the inside of the kitchen hood to a wider area of the entire interior space.

An object of the present disclosure is to prevent leakage of steam when cleaning the inside of a kitchen hood with steam.

An object of the present disclosure is to more smoothly remove condensed water and foreign substances when cleaning the inside of a kitchen hood with steam.

In the kitchen hood of the present disclosure, the second housing may be moved up and down into and out of the first housing. Suction ports are formed on the lower left and right sides of the second housing, respectively, so that air can be sucked in from the outside through the suction ports. A suction grill for filtering contaminants contained in the suctioned air may be installed at the suction port. This suction grill can be easily formed detachable.

In the kitchen hood of the present disclosure, an outlet may be formed at an upper portion of the first housing. Air sucked in through the inlet may be discharged to the outside through the outlet. A fan may be disposed on an inner upper portion of the first housing. Air may be sucked in from the outside through the intake port by the rotation of the fan. The sucked air rises in the fan direction of the upper part through the inside of the second housing and the inside of the first housing, and may be discharged through an outlet formed in the upper part. The fan may be rotated by a fan driving motor.

The kitchen hood of the present disclosure includes a first housing having an inner space, a second housing formed to vertically elevate inside and out of the first housing, a lifting motor for elevating the second housing, and left and right side surfaces of the second housing A suction port formed respectively, a fan rotating so that air is sucked through the suction port, a fan motor rotating the fan, an outlet formed on one surface of the first housing and discharging the sucked air, the lifting motor and and a control unit for driving the fan motor, and when a preset operating condition is satisfied, the control unit may drive the elevating motor to lower the second housing and drive the fan motor to rotate the fan.

In the kitchen hood of the present disclosure, the control unit determines whether a preset operating condition is satisfied, and when the operating condition is satisfied, the control unit measures the distance from one or more distance sensors installed on the lower surface of the first housing to the lower object, respectively a process of vertically lowering, by the control unit, a second housing located inside the first housing to the outside of the first housing by driving a lifting motor according to the measured distance measured by the one or more distance sensors; When the second housing is lowered, the control unit drives the fan motor to rotate the fan to perform a process of rotating the fan.

In the kitchen hood of the present disclosure, a flow path according to the movement of air may be formed when the air sucked through the suction port moves to the upper fan through the inside of the second housing. A left damper may be installed on the left passage, and a right damper may be installed on the right passage. These left and right dampers can control the air flow on each flow path.

In the kitchen hood of the present disclosure, a plurality of distance sensors for measuring a distance to an object located below may be installed. Such a distance sensor may be installed on a lower surface of the first housing. When a kitchen hood is installed above the cooking device, the distance sensor may measure the distance between the cooking device or a heat generating unit (eg, a cooking device, stove, induction, etc.). Distance measurement can be performed in real time. The measured distance may be transmitted to the controller.

The kitchen hood of the present disclosure may measure a distance from a distance sensor to an object located below, and the controller may control the height of the second housing by driving a lifting motor according to the measured distance measured by the distance sensor. When an object is sensed below, the second housing may be lowered to a relatively higher position, and if no object is detected below, the second housing may be lowered to a relatively lower position. By descending to a lower position, the suction port can be brought closer to the source of contamination of the cooking apparatus, and more air can be sucked in quickly.

The kitchen hood of the present disclosure may be installed so as to correspond to the position and number of heat generating units of the cooking apparatus installed below the kitchen hood in the distance sensor. Accordingly, the distance sensor can more accurately measure the cooking tool placed on the heat generating unit or the user's hand using the cooking tool.

In the kitchen hood of the present disclosure, the second housing may be raised and lowered by a touch of the lift button. When the touch of the lift button is sensed, the control unit may drive the lift motor to lift the second housing. The lift position can also be determined by touching the lift button.

The kitchen hood of the present disclosure may include an air quality sensor that measures the air quality of the surrounding air. The control unit may control the height of the second housing by driving the elevating motor according to the air quality measurement value. Thereby, the height of the inlet is adjusted. The worse the air quality, the lower the second housing can be.

In the kitchen hood of the present disclosure, when the second housing is lowered, the controller may drive the fan motor to rotate the fan. External air may be sucked into the second housing through the suction port by the rotation of the fan. When outside air is sucked in through the suction port, contaminants may be filtered out of the suction grill.

In the kitchen hood of the present disclosure, if the measured distance to the lower object measured by the distance sensor in a state where the second housing is lowered to the first position, which is a relatively higher position, is less than the first set distance, the second housing is continuously produced. If the first position is maintained and the measurement distance is equal to or greater than the first set distance, the second housing may be further lowered to a second position relatively lower than the first position. This is to lower the second housing further down when it is determined that there is no cooking tool in the cooking apparatus at the distance measured in real time after the second housing is in the first position.

In the kitchen hood of the present disclosure, if the measured distance to the lower object measured by the distance sensor in a state where the second housing is lowered to the second position, which is a relatively lower position, is greater than or equal to the first set distance, the second housing continues to the second If the position is maintained and the measurement distance is smaller than the first set distance, the second housing may further rise to the first position, which is a relatively higher position than the second position. This is to raise the second housing further upward when it is determined that there is a cooking tool in the cooking apparatus at a distance measured in real time after the second housing is in the second position.

In the kitchen hood of the present disclosure, the air volume may be adjusted according to the air quality state or level measured by the air quality sensor. The controller may rotate the fan by driving the fan motor in response to the air quality measurement value measured by the air quality sensor. The fan motor may be driven so that the air volume increases in proportion to the size of the air quality measurement value. The poorer the air quality, the faster the air can be purified by generating a strong wind volume.

The kitchen hood of the present disclosure may measure different types of air quality from a plurality of air quality sensors. The plurality of air quality sensors may include a sensor for measuring fine dust in the air, a sensor for measuring odor, a sensor for measuring gas, a sensor for measuring oil, and the like. The gas may include carbon monoxide, carbon dioxide, VOCs, methane gas, and the like.

The kitchen hood of the present disclosure includes a first housing having an inner space, a second housing formed to vertically elevate inside and out of the first housing, a lifting motor for elevating the second housing, and left and right side surfaces of the second housing A suction port formed respectively, a fan rotating so that air is sucked through the suction port, a fan motor rotating the fan, an outlet formed on one surface of the first housing and through which the sucked air is discharged, the first housing and an air quality sensor installed on one surface to measure the air quality of the surrounding air, and a control unit for driving the lifting motor and the fan motor, wherein the control unit drives the fan motor according to the air quality measurement value measured by the air quality sensor. You can adjust the airflow by the fan.

In the kitchen hood of the present disclosure, the control unit determines whether a preset operating condition is satisfied, and when the operating condition is satisfied, a plurality of air quality sensors respectively installed on the left and right sides of the lower surface of the first housing provide different types of air quality for ambient air. each of the following steps; and the control unit driving an elevating motor according to the measured air quality measurement value to lower the second housing located inside the first housing to the outside of the first housing; When the second housing is lowered, a process of driving the fan motor to generate an air volume corresponding to the measured air quality measurement value to rotate the fan may be performed.

The kitchen hood of the present disclosure may classify the air volume into a plurality of stages according to the size of each air quality measurement value measured by the air quality sensor and display it on the display. For example, fine dust can be classified into 0 to 3 stages according to the range of the measured value, and the air volume can be set for each stage. For example, the stage 0 may be a stage in which the wind volume is not generated, the stage 1 may be a weak wind, the stage 2 may be a medium wind, and the stage 3 may be a strong wind. The worse the fine dust situation, the closer to the 3rd stage.

In the kitchen hood of the present disclosure, the control unit may generate an air volume corresponding to a relatively highest level among different types of air quality measurement values respectively measured by a plurality of sensors. For example, when fine dust is at stage 0, VOC is at stage 1, and CO2 is at stage 2, the air volume corresponding to stage 2, which is the highest among them, may be generated.

In the kitchen hood of the present disclosure, the controller may rotate the fan by driving the fan motor to generate the maximum air volume when at least one of the different types of air quality measurement values is the highest level. The highest stage may be the last stage among the stages divided as described above. For example, if it is divided into stages 0 to 3, stage 3 may be the highest stage. When the air volume reaches the maximum air volume, the second housing may be lowered to the lowest position.

The kitchen hood of the present disclosure may turn on the lighting when the kitchen hood operates. This makes it easy to operate the kitchen hood even in a dark environment.

The kitchen hood of the present disclosure may detect that the heat generating unit of the cooking apparatus installed below is turned on, and may open the left or right damper corresponding to the position of the turned on heat generating unit. This makes it possible to more effectively remove contaminants by opening the left or right damper according to the location of the contaminant in the heat generating unit. Even in this case, the air quality can be adjusted by judging the state or level of the air quality by the air quality sensor.

In the kitchen hood of the present disclosure, a plurality of air quality sensors may be installed in the inner housing of the first housing, and an opening may be formed in the outer housing covering the inner housing to generate air flow to the air quality sensor. This allows air to flow into the air quality sensor through the opening, allowing accurate measurement of the air quality level.

The kitchen hood of the present disclosure may determine the lifting and lowering positions of the second housing according to the air quality measured by the air quality sensor. If the measured air quality level or condition is not good, the second housing may be lowered further down.

In the kitchen hood of the present disclosure, a plurality of temperature sensors for measuring the ambient temperature may be installed in the first housing. Temperature sensors may be installed on left and right sides of the upper front surface of the first housing. The temperature sensor installed on the upper part may measure the air temperature of the upper part of the kitchen hood, and the temperature sensors installed on the left and right sides may measure the air temperature of the left and right sides of the kitchen hood.

In the kitchen hood of the present disclosure, each temperature sensor may be installed in the inner housing of the first housing, and in the outer housing covering the inner housing, an opening may be formed at a position corresponding to each temperature sensor to allow air to pass through. . These openings allow ambient air to pass through the outer housing and reach each temperature sensor in the inner housing.

In the kitchen hood of the present disclosure, the controller may rotate the fan by driving the fan motor according to the air temperature at each location measured by the plurality of temperature sensors. The air volume may be determined by the rotation of the fan. Preferably, the fan motor may be driven so that the air volume increases in proportion to the difference between the respective temperatures measured by the plurality of temperature sensors.

In the kitchen hood of the present disclosure, the air volume is displayed on the display so that the user can visually check the air volume. Preferably, the air volume may be displayed on the display in a plurality of stages according to the difference in each temperature measured by the plurality of temperature sensors.

The kitchen hood of the present disclosure includes a first housing having an inner space, a second housing formed to vertically elevate inside and out of the first housing, a lifting motor for elevating the second housing, and left and right side surfaces of the second housing A suction port formed respectively, a fan rotating so that air is sucked into the inside through the suction port, a fan motor rotating the fan, an outlet formed on one surface of the first housing and through which the sucked air is discharged; 1 It is installed on the outer surface of the housing and includes a plurality of temperature sensors for measuring the ambient temperature, and a control unit for driving the lifting motor and the fan motor, wherein the control unit is the fan motor according to the temperatures respectively measured by the plurality of temperature sensors. can be driven to adjust the air volume by the fan.

In the kitchen hood of the present disclosure, the control unit determines whether a preset operating condition is satisfied, and when the operating condition is satisfied, the control unit drives the elevating motor so that the second housing located inside the first housing is moved to the first housing In the process of vertically descending to the outside of the, and when the second housing is lowered, the control unit drives the fan motor and the air sucked through the suction ports formed on the left and right sides of the second housing by the rotation of the fan is supplied to the second housing and A process of discharging through the interior of the first housing to an outlet formed on one surface of the first housing, and a process of measuring the temperature from a plurality of temperature sensors installed in the upper part, the lower left part, and the lower right part, respectively, of the first housing; The control unit may drive the fan motor according to the temperature measured by the temperature sensor to adjust the air volume by the fan.

In the kitchen hood of the present disclosure, the first temperature sensor is installed on the upper front surface of the first housing, the second temperature sensor is installed on the lower left surface of the first housing, and the third temperature sensor is installed on the lower right surface of the first housing can be The temperatures measured by the first, second, and third temperature sensors may be the first, second, and third temperatures. The air volume may be determined according to a temperature difference between the first, second, and third temperatures.

In the kitchen hood of the present disclosure, when the temperature difference between the first temperature and the second temperature or the third temperature is less than a preset first reference value, the air volume may not be generated. This stops the fan motor so that the fan does not rotate. If the temperature difference is greater than or equal to the first reference value, the fan may be rotated to increase the air volume as the temperature difference increases.

In the kitchen hood of the present disclosure, when the temperature difference is equal to or greater than a first reference value, a first air volume is generated when the temperature difference is between the first reference value and a preset second reference value, and the temperature difference is between the second reference value and a preset third reference value If the temperature difference is between the third reference value and the preset fourth reference value, the second air volume may be generated and the third air volume may be generated. In this case, if the air volume is the third air volume, the control unit may drive the lifting motor to lower the second housing to the lowest position.

The kitchen hood of the present disclosure may control opening and closing of the left damper and/or the right damper based on a difference in temperature measured by a plurality of temperature sensors. Specifically, if the temperature difference between the upper air temperature and the left and right air temperatures is less than or equal to the first set value, heat may not be generated in both the left and right heat generating units in the cooking apparatus. In this case, both the left and right dampers can be closed. This means that there is no pollution source, so the left and right dampers are not opened.

In the kitchen hood of the present disclosure, if the temperature difference between the upper air temperature and the left air temperature is greater than the first set value, and the temperature difference between the left and right air temperatures is greater than the second set value, heat is generated in the left heat generating unit in the cooking apparatus can In this case, the left damper may be opened and the right damper may remain closed. Accordingly, the left damper is opened so that the left air can be quickly sucked in.

In the kitchen hood of the present disclosure, when the temperature difference between the upper air temperature and the right air temperature is greater than the first set value, and the temperature difference between the left and right air temperatures is greater than the second set value, heat is generated in the right heat generating unit in the cooking apparatus can In this case, the right damper may be opened and the left damper may remain closed. This opens the right damper so that the right air can be quickly sucked in.

In the kitchen hood of the present disclosure, left suction or right suction may be displayed on the display while air is sucked through the left or right suction port by opening the left or right damper.

In the kitchen hood of the present disclosure, if the temperature difference between the upper air temperature and the left and right air temperatures is greater than the first set value, and the temperature difference between the left and right air temperatures is less than or equal to the second set value, heat is generated from the left and right heat generating units in the cooking device. can In this case, both the left and right dampers can be opened. Accordingly, both the left and right dampers are opened to allow the air from the left and right sides to be quickly sucked in.

In the kitchen hood of the present disclosure, the temperature of the ambient air measured by the temperature sensor may determine the elevation height of the second housing. Based on the temperature difference between the upper air temperature and the left and right air temperatures measured by the temperature sensor, it may be determined whether heat is generated in the left and right heat generating units, and accordingly, the lifting and lowering of the second housing may be determined.

In the kitchen hood of the present disclosure, when heat is generated from both the left and right heat generating units of the cooking apparatus, the second housing may be lowered to be relatively lowered to be closer to the heat generating unit to allow more air to be sucked in. If heat is not generated from the heat generating unit, the second housing may be lowered to a relatively higher position to allow relatively little air to be sucked in.

The kitchen hood of the present disclosure may include a cleaning assembly inside the second housing to automatically perform internal steam cleaning. If the set conditions are satisfied, steam cleaning can be performed automatically. For example, when a set time elapses after cooking is finished, steam cleaning may be performed automatically.

In the kitchen hood of the present disclosure, the control unit may detect on/off of the cooking device through wired/wireless communication with the cooking device. When the cooking apparatus is turned on and off, it may be determined that cooking is finished. Alternatively, when a preset steam cleaning cycle arrives, steam cleaning may be performed automatically. Alternatively, when the user selects the steam cleaning mode through the operation unit for selecting the operation mode, steam cleaning may be started.

In the kitchen hood of the present disclosure, a process from the start to the end of steam cleaning may be displayed on a display and/or a voice guidance may be output through an audio output unit. In addition to this, a voice guidance requesting a user's operation necessary for steam cleaning may be output.

The kitchen hood of the present disclosure may include a liquid container capable of containing a detergent solution for steam cleaning. The liquid container may be disposed inside the second housing. If necessary, the liquid container may be slid into and out of the second housing to be drawn out and drawn in. Draw-out of the liquid container may be performed by a draw-out motor. The withdrawal/input motor may be driven by the control unit. Whether the liquid container is withdrawn or not may be detected by a withdrawal/input detection sensor. The result detected by the withdrawal/input detection sensor may be transmitted to the control unit.

The kitchen hood of the present disclosure includes a first housing having an inner space, a second housing formed to vertically elevate inside and out of the first housing, a lifting motor for elevating the second housing, and a lower end of the second housing. and a liquid container for storing the liquid, a pull-out motor for drawing and inserting the liquid container into and out of the second housing, and a control unit for driving the elevating motor and the drawer/intake motor, wherein the control unit is in a steam cleaning mode When the input is received, the lifting motor is driven to lower the second housing from a preset initial position, and when the second housing is lowered, the draw-in/out motor is driven to draw out the liquid container to the outside of the second housing.

In the kitchen hood of the present disclosure, the control unit determines whether the steam cleaning mode is in the steam cleaning mode, and in the steam cleaning mode, the control unit drives the lifting motor to move the second housing disposed inside the first housing from the initial position to the first housing. The process of vertically descending to the outside of the and, when the second housing is lowered, the control unit drives the withdrawal/intake motor to draw out the liquid container disposed inside the lower end of the second housing to the outside of the second housing. can do.

In the kitchen hood of the present disclosure, when the steam cleaning mode is input or selected, the control unit lowers the second housing including the liquid container in order for the user to check the detergent liquid in the liquid container or to replenish the liquid container if there is no detergent liquid. can be lowered This is to make it easier to check the inside by withdrawing the liquid container.

In the kitchen hood of the present disclosure, when a steam cleaning mode is input or selected, a voice guidance indicating the start of the steam cleaning mode may be output. When the second housing is lowered, the control unit may drive the withdrawal motor to draw out the liquid container to the outside of the second housing. When the liquid container is drawn in, a voice guide to check the inside of the liquid container or to replenish detergent solution can be output.

The kitchen hood of the present disclosure may be provided with a water level sensor for detecting the level of the detergent solution stored in the liquid container. The water level detected by the water level sensor may be transmitted to the control unit and further displayed on the display. Accordingly, the user can fill the detergent solution by checking the water level displayed on the display.

In the kitchen hood of the present disclosure, when the user draws the liquid container back into the second housing for steam cleaning, the drawer/intake detection sensor detects the inlet of the liquid container and transmits the control unit. The control unit may drive the lifting motor for steam cleaning to raise the second housing.

In the kitchen hood of the present disclosure, if the draw-in/out detection sensor does not detect the inlet of the liquid container for a first preset time after the liquid container is withdrawn, a guide requesting the liquid container to be drawn in is displayed on the display and/or voice guidance can be output through the audio output unit. When the raising of the second housing is completed, a voice guidance informing that steam cleaning is started may be output.

In the kitchen hood of the present disclosure, when the second housing is raised, the steam cleaning assembly is driven to automatically perform the steam cleaning process. Steam cleaning may be performed for a preset time.

The kitchen hood of the present disclosure generates steam in a steam generator using a liquid stored in a liquid container during steam cleaning, distributes the steam to a plurality of locations through the steam distributor, and discharges the steam through a plurality of nozzles formed in the steam distributor. can do.

In the kitchen hood of the present disclosure, when steam cleaning is finished, the control unit may drive the lifting motor to lower the second housing in order to discard the contaminants recovered in the liquid container. When the second housing is lowered, the control unit may drive the withdrawal motor to withdraw the liquid container to the outside of the second housing. When the liquid container is withdrawn, the user can take out the liquid container and remove the contaminant from the inside.

In the kitchen hood of the present disclosure, when steam cleaning is completed and the liquid container is drawn into the second housing and the second housing is raised, a drying process may be performed. To this end, the control unit drives the fan motor to rotate the fan so that the internal drying process may be performed according to the air volume. When the drying process is started, a voice guidance indicating the start of drying may be output. When the drying process is finished, the control unit may output a voice guidance notifying the end of drying.

In the kitchen hood of the present disclosure, a first main pipe and a second main pipe are provided with a predetermined height difference in a steam distributor to which steam is sprayed. Since steam is injected into the housing through nozzles in the first main pipe and the second main pipe, the distance to the target position where the steam reaches is relatively close, so that the removal of foreign substances can be more smoothly.

In the kitchen hood of the present disclosure, a first main pipe and a second main pipe may be provided with a predetermined height difference, and an auxiliary pipe may connect the first main pipe and the second main pipe. As described above, since the first main pipe, the second main pipe, and the auxiliary pipe having the nozzle are provided, it is possible to simultaneously spray steam to almost the entire area of the inner space of the housing.

In the kitchen hood of the present disclosure, a wiper is positioned between the first housing and the second housing to prevent steam leakage through between the first housing and the second housing, and at the same time, foreign substances on the inner surface of the first housing and Condensate can be removed more smoothly.

A kitchen hood of the present disclosure includes a first housing; a second housing configured to move vertically with respect to the first housing; a fan positioned inside the first housing to suck air; an inlet formed in the second housing and through which air is sucked; an outlet formed in the first housing and through which air is discharged; and a steam cleaning assembly positioned within the second housing and configured to generate and distribute steam, the steam cleaning assembly comprising: a container having a first portion and a second portion; A heater for generating steam, a steam distributor having a nozzle for spraying the steam generated by the heater, and a condensed water collector for guiding condensed water containing foreign substances separated by steam and delivering it to the second part of the container may be included. In addition, the steam distributor may include a first main pipe positioned above the condensate collector of the second housing and a second main pipe positioned at an inner upper end of the second housing.

In the kitchen hood of the present disclosure, the first main pipe and the second main pipe may be connected to each other by an auxiliary pipe. The condensate collector includes: a front plate having an upper portion and a lower portion; a rear plate having an upper portion and a lower portion and coupled to the inner surface of the housing together with the front plate; and a plurality of tabs positioned between the front plate and the rear plate and configured to guide the condensate downward.

The kitchen hood of the present disclosure includes a housing; a fan provided inside the housing to suck air; an inlet formed in the housing and sucking air; an outlet formed in the housing and through which air is discharged; and a steam cleaning assembly positioned within the housing and configured to generate steam and distribute the steam to the interior of the housing, the steam cleaning assembly comprising: first and second portions in which liquid is stored; a container configured to be separated from the housing; a heater configured to heat the liquid in the first portion to generate steam; a steam distributor having a first main pipe having a nozzle for spraying steam and positioned inside the housing, and a second main pipe spaced upward from the first main pipe and having a nozzle for spraying steam; and a condensate collector located at the top of the vessel and configured to direct the condensate of steam to the second portion of the vessel.

In the kitchen hood of the present disclosure, the container may be configured to slide horizontally from the front end of the housing. It may further include a frame positioned between the condensate collector and the container, the frame may form a passage for guiding the condensate from the lower portion of the condensate guide to the second portion of the container.

A kitchen hood of the present disclosure includes a first housing; a second housing configured to move vertically with respect to the first housing; a fan positioned inside the first housing to suck air; an inlet formed in the second housing and through which air is sucked; an outlet formed in the first housing and through which air is discharged; a steam cleaning assembly positioned within the second housing and configured to generate and distribute steam; A wiper positioned between the outer surface of the second housing and the inner surface of the first housing to prevent steam from leaking between the second housing and the first housing may be included.

In the kitchen hood of the present disclosure, a contact piece made of an elastic material is provided at the tip of the wiper to be in close contact with the inner surface of the first housing. The wiper may be installed on the outer surface of the second housing, and an inclined surface may be formed on the upper surface of the wiper to be inclined downward toward the outer surface of the second housing, and the inclined surface may also be inclined downward toward the drain formed in the wiper. can get

In the kitchen hood of the present disclosure, a drain hole for guiding condensed water to the condensate collector may be formed in the second housing corresponding to the drain passage.

The kitchen hood of the present disclosure may have at least one or more of the following effects.

In the kitchen hood of the present disclosure, the fan is rotated to suck in the outside air through the suction port and discharge it to the outside, and when the outside air is sucked in, the pollutants contained in the air are filtered by a filter or a suction grill to perform an air purification function. can

In the kitchen hood of the present disclosure, when the kitchen hood is turned on or a user's approach is detected, the light is turned on to provide convenience to the user even in a dark environment.

In the kitchen hood of the present disclosure, the location of the pollutant can be detected using a distance sensor, and the pollutant generated from the pollutant can be effectively removed by opening the flow path of the inlet in response to the location of the pollutant.

In the kitchen hood of the present disclosure, since a plurality of distance sensors are installed in positions and numbers to correspond to the positions and numbers of heat generating units of the cooking apparatus installed below, the positions of the contaminants placed in the heat generating units can be detected more accurately. The height of the second housing may be determined according to the detection result.

In the kitchen hood of the present disclosure, the height of the suction port installed in the second housing may be adjusted by adjusting the elevation height of the second housing. By sensing the user's hand while cooking and/or up to the cooking utensils placed on the heat generating unit of the cooking apparatus located below, the lowered suction port may not interfere with the user's cooking.

In the kitchen hood of the present disclosure, when the second housing is lowered, the fan is rotated so that air is sucked through the left and right suction ports by the rotation of the fan while the second housing is lowered.

In the kitchen hood of the present disclosure, when the kitchen hood is turned on by touching the power button or the cooking apparatus is turned on through wired/wireless communication with the cooking apparatus, the kitchen hood may be automatically operated. The kitchen hood may communicate with the cooking device, and check on/off of the cooker, on/off of the heat generating unit, and the like.

In the kitchen hood of the present disclosure, a display is installed in the first housing to visually display status information, operation status, and guide information of the kitchen hood. Accordingly, the user can provide convenience of using the hood for the kitchen. In addition, a user's manipulation can be inputted to the display, so that a user's command can be easily input or selected.

In the kitchen hood of the present disclosure, suction ports are installed on the lower left and right sides of the second housing, and the left and right dampers are installed on the left and right flow paths of air sucked through the suction port, so that the dampers can be opened and closed in response to the location of the pollution source. Accordingly, effective air purification may be possible by opening and closing the damper located close to the pollutant source. In addition, the degree of opening and closing of the damper can be adjusted according to the distance from the pollution source.

In the kitchen hood of the present disclosure, since the elevation height of the second housing is determined according to the air quality measurement value measured by the air quality sensor, when the degree of air pollution becomes severe, the position of the suction port is lowered so that a large amount of air can be sucked. In this way, the more severe the pollution, the stronger the air purification can be.

In the kitchen hood of the present disclosure, it is possible to detect contaminants contained in the air. When these pollutants are detected, the air purification function can be performed, so that a pleasant environment can be maintained.

In the kitchen hood of the present disclosure, when the kitchen hood is turned on or a user's approach is detected, the light is turned on to provide convenience to the user even in a dark environment.

In the kitchen hood of the present disclosure, before the second housing descends, the distance to the lower cooking utensils is sensed in advance to determine the descending position of the second housing, so that the lowered second housing collides with the lower cooking utensils or Alternatively, it can be made so that it does not interfere with the use of cooking utensils.

In the kitchen hood of the present disclosure, since the suction grill that filters contaminants contained in the air when the air is sucked in is easy to disassemble and can be replaced and washed, the suction grill can be maintained in a comfortable state.

In the kitchen hood of the present disclosure, the cooking apparatus may operate in the air cleaning mode depending on the air quality not only in the on state but also in the off state. Therefore, it is possible to maintain a comfortable 24-hour kitchen environment.

In the kitchen hood of the present disclosure, different types of air quality states or levels may be detected using a plurality of air quality sensors.

In the kitchen hood of the present disclosure, the air volume may be adjusted according to the air quality measurement value. The poorer the air quality, the stronger the airflow. As a result, when the air quality is poor, a stronger air volume is generated, allowing more air to be sucked in and discharged, enabling rapid air purification.

In the kitchen hood of the present disclosure, fine dust, odor, oil, gas, etc. contained in the air may be measured, and the gas may include carbon monoxide, carbon dioxide, VOCs, methane gas, and the like. By displaying the status information of these pollutants on the display, the user can visually confirm it.

In the kitchen hood of the present disclosure, the lowering position of the second housing may be determined according to the air quality measurement value. The position of the inlet may be determined according to the lowering position of the second housing, and if the air quality or level is poor, the second housing may be lowered further to expose more of the inlet. In addition, a user's manipulation can be inputted to the display, so that a user's command can be easily input or selected.

In the kitchen hood of the present disclosure, the damper corresponding to the location of the pollution source may be opened and closed according to the air quality measurement value. Accordingly, when the air quality condition or level deteriorates, effective air purification may be possible by opening/closing a damper located close to the pollutant source. In addition, the degree of opening and closing of the damper can be adjusted according to the distance from the pollution source.

In the kitchen hood of the present disclosure, a 24-hour air management function may be performed by setting the elevation height and air volume of the second housing according to the air quality measurement value.

In the kitchen hood of the present disclosure, the air volume may be divided into a plurality of stages according to the range of the air quality measured value, and the air volume may be generated in a step corresponding to the air quality measured value. This is to generate an air volume suitable for the condition or level of air quality.

In the kitchen hood of the present disclosure, generation of contaminants may be determined according to temperatures measured by a plurality of temperature sensors installed at a plurality of positions, and accordingly, a height and an air volume of the second housing may be determined.

In the kitchen hood of the present disclosure, by measuring the air temperature of the upper part and the air temperature of the left and right sides in the hood, it is possible to check whether or not the heat is generated by the heat generating unit and the location of the heat in the lower cooking device, and corresponds to the heat generating position of the heat generating unit This allows you to determine the airflow. Thereby, effective air purification can be performed.

In the kitchen hood of the present disclosure, the left damper of the left suction port and/or the right damper of the right suction port may be opened and closed in response to the heat generating position of the heat generating unit in the cooking apparatus. Since the generation of heat in the heat generating unit may mean the presence of a contaminant at a corresponding location, the left and/or right dampers corresponding to the corresponding location may be opened to allow efficient air discharge.

In the kitchen hood of the present disclosure, since the air volume increases in proportion to the difference in each temperature measured by the plurality of temperature sensors, the air volume becomes stronger as the pollution is severe, so that air purification can be performed quickly through rapid air intake.

In the kitchen hood of the present disclosure, the air volume can be divided into a plurality of stages according to the difference in temperature and displayed on the display, so that the user can visually confirm it, thereby providing convenience of use.

In the kitchen hood of the present disclosure, the air volume can be efficiently controlled according to the degree of contaminants by generating the air volume in a plurality of stages divided according to the difference in temperature as described above.

In the kitchen hood of the present disclosure, since the temperature difference between the air temperature of the upper part of the hood and the air temperature of the left and right sides of the lower part is used, it is possible to accurately determine the presence of a pollutant in the lower heat generating part, and accordingly, the air corresponding to the location of the pollutant can be inhaled quickly.

In the kitchen hood of the present disclosure, when a specific condition is satisfied, the inside can be used cleanly by automatically performing steam cleaning of the inside. The specific condition may be a case in which a steam cleaning mode is input or selected by the user, a preset steam cleaning cycle is reached, or a set time elapses after cooking is finished in the cooking apparatus. The end of cooking may be, for example, when the cooking apparatus is turned on and then turned off.

In the kitchen hood of the present disclosure, the liquid container for steam cleaning disposed inside the second housing may be automatically drawn out, thereby enhancing user convenience. In addition, the liquid container can be easily detached and detached by sensing that the liquid container is drawn out of the second housing and that the liquid container is drawn into the inside of the second housing.

In the kitchen hood of the present disclosure, if the liquid container is not drawn back into the second housing within the first time after being drawn out, a guide requesting the introduction of the liquid container is output, so that the user can easily recognize it and pull it in.

In the kitchen hood of the present disclosure, it is possible to provide user convenience to visually and/or audibly output a guide for each step in the steam cleaning process and/or in the withdrawal/intake process of the liquid container for steam cleaning.

In the kitchen hood of the present disclosure, a user can easily and conveniently withdraw and insert the liquid container, and it is possible to easily check and replenish the detergent solution in the liquid container. In addition, by detecting the level of the detergent solution in the liquid container by the water level sensor and outputting it through the display or the audio output unit, the user can confirm this, so that it is easy to determine whether to replenish the detergent solution.

In the kitchen hood of the present disclosure, after steam cleaning, the fan is rotated to generate an air volume, and the internal drying process can be automatically performed by the air volume, so that a safe and comfortable hood can be used. In addition, the progress of the drying process can be displayed on the display or output as voice guidance, so that the user can easily recognize it.

In the kitchen hood of the present disclosure, there is a predetermined height difference between the first main pipe and the second main pipe in the steam distributor. The distance to the target position of the steam sprayed from the nozzles in the first main pipe and the second main pipe is relatively close. Accordingly, steam can be sent more quickly with a stronger pressure to each position of the internal space requiring steam cleaning, so that the removal of foreign substances in the hood is more smooth.

And, since the first main pipe and the second main pipe have a predetermined height difference, it is possible to quickly spray steam over a relatively wide area. In addition, if the auxiliary pipe is used, steam can be sprayed more quickly over a wider area, so that foreign substances inside the kitchen hood can be removed better.

In particular, in the present disclosure, steam may be sprayed by elevating the second housing having the steam distributor with respect to the first housing. For example, the steam distributor may move together with the elevation of the second housing between a position corresponding to a relatively lower portion of the first housing and a position corresponding to an upper portion of the first housing to spray steam. Accordingly, there is an effect that steam cleaning of the area including the entire interior of the first housing is possible.

In the kitchen hood of the present disclosure, a wiper is placed between the inner surface of the first housing and the outer surface of the second housing so that steam from the steam distributor does not leak through between the first housing and the second housing. The wiper prevents the steam from leaking between the first housing and the second housing, so that steam cleaning of the inner space is performed more efficiently.

In the kitchen hood of the present disclosure, the second housing is raised and lowered into and out of the first housing, and by the relative movement between the first housing and the second housing, the wiper installed on the outer surface of the second housing removes foreign substances from the inner surface of the first housing. It can be separated and guided to the condensate collector. Accordingly, there is an effect that foreign substances on the inner surface of the first housing can be better removed through the wiper.

1 is a front view of a kitchen hood according to an embodiment of the present disclosure installed in the kitchen.
Figure 2 is a side perspective view showing a state in which the kitchen hood shown in Figure 1 is partially extended.
Figure 3 is a side perspective view showing the fully extended state of the kitchen hood shown in Figure 1;
4A is a front view of the kitchen hood in a fully extended state;
Figure 4b is a front cross-sectional view of the kitchen hood showing the inside and air flow of the kitchen hood.
5 is a side perspective view of the kitchen hood in a fully extended state and in a state in which the suction grill is partially separated;
6 is a perspective view of the kitchen hood showing the display.
7 is a perspective view showing a kitchen hood in a state in which the first housing of the outer case is opened and extended;
8 is an exploded perspective view showing inner cases of the first housing and the second housing forming the kitchen hood;
9 is an exploded perspective view of the kitchen hood showing the sliding assembly and the steam cleaning assembly.
10 is a front cross-sectional view of the first housing and the second housing in an unextended state;
11 is an exploded perspective view of the sliding assembly;
12 is an enlarged exploded perspective view showing the gears of the sliding assembly;
13 is an enlarged assembly perspective view showing the gears of the sliding assembly.
14 is a side cross-sectional view of the sliding assembly;
15 is an enlarged cross-sectional view of the steam cleaning assembly.
16 is an enlarged exploded perspective view of the steam cleaning assembly;
17 is an enlarged exploded perspective view of the steam cleaning assembly;
18 is an exploded perspective view of the steam cleaning assembly;
19 is a view showing dampers for opening and closing left and right suction paths;
20 is an enlarged view of dampers and gears;
21A is a view showing a state in which the left damper is opened and the right damper is closed;
21B is a view showing a state in which the right damper is opened and the left damper is closed;
22 is a front sectional perspective view of the first housing and the second housing in an extended state;
23 is an exploded perspective view of the display and the air quality sensing assembly;
24A to 24F are views showing a display being implemented.
25 is a bottom perspective view showing the height sensing assembly;
26 is an exploded perspective view of the height sensing assembly;
27 is a rear view showing the lower surface of the hood for the kitchen.
28 is a plan view showing a state in which the kitchen hood is disposed above the cooking apparatus;
29 is a cross-sectional perspective view showing that a steam distributor having a different configuration is employed in the kitchen hood.
30 is a cross-sectional perspective view showing that the steam distributor is relatively moved upward in a structure in which the steam distributor shown in FIG. 29 is employed in the kitchen hood;
31 is a perspective view showing the configuration of a steam distributor employed in a kitchen hood.
32 is a perspective view showing that a wiper is employed between the first housing and the second housing in the kitchen hood;
33 is an enlarged cross-sectional view showing that a wiper is employed between the first housing and the second housing in the kitchen hood.
34 is an operation state diagram illustrating that steam is relatively sprayed to the inner upper region of the first housing in the kitchen hood shown in FIG. 29;
FIG. 35 is an operation state diagram illustrating that steam is relatively sprayed to an inner lower region of the first housing in the kitchen hood shown in FIG. 29;
Fig. 36 is a block diagram of components connected to a control unit for controlling a kitchen hood;
37 to 44 are flowcharts showing a kitchen hood control method according to the disclosed embodiments.
45 is an exemplary diagram in which an air volume according to an air quality measurement value is divided into a plurality of levels;

Hereinafter, some embodiments of the present disclosure will be described in detail with reference to exemplary drawings.

1 to 3 , the kitchen hood 1 according to the exemplary embodiment of the present disclosure may be provided to suck ambient air into an internal space and discharge the sucked air. The kitchen hood 1 may include a housing or a casing 100 having a rectangular or rectangular parallelepiped shape.

The exterior of the casing 100 may be made of a metal or glass-coated metal material (eg, glass-coated stainless steel or brushed stainless steel), although embodiments disclosed herein are not limited thereto. The housing 100 may define an outermost surface of the kitchen hood 1 to form an appearance.

The casing 100 may serve as the first housing 100 , and the kitchen hood 1 is disposed inside the first housing 100 and slides in and out of the first housing 100 to be vertical It may include a second housing 200 configured to be lifted in the direction.

The second housing 200 may include a suction grill 210 through which ambient air is sucked. The vertical movement of the second housing 200 may adjust the height of the suction grill 210 .

The first and second housings 100 and 200 may alternatively be referred to as outer and inner housings or casings, respectively, or as female and male housings, respectively.

The second housing 200 is lowered so that the suction grill 210 approaches a cooking device such as a range, an induction device, a cooktop, or a pan, a pot, a bowl, etc. (hereinafter referred to as a 'cooking tool') located in the cooking device. 1 Some or all of the housing 100 may be slid from the inside to the outside.

In addition, the second housing 200 may be slid so that a part or all of the first housing 100 is raised from the outside to the inside. The distance between the suction grill 210 and the cooking apparatus and/or cooking utensils may be adjusted by lifting and lowering the second housing 200 according to the vertical slide. The second housing 200 may be completely slid into the interior of the first housing 110 .

The sliding motion of the second housing 200 is manually controlled by the user or automatically controlled based on the height of the cookware detected by the kitchen hood 1 or the amount of fine dust, smoke or other gas in the air. can be

For example, when a sauce pan or pot with boiling water is provided to the cooking device under the kitchen hood 1, since there will not be many contaminants such as oil mist in the air, the second housing 200 is relatively more It may have a high height (as illustrated in FIG. 2 ) and may be partially inserted into the first housing 100 .

Alternatively, when a frying pan having oil or fragrant food ingredients is placed on the cooking device under the kitchen hood 1, the second housing 200 may have a relatively low height (as illustrated in FIG. 3 ). In addition, most of the contaminants emitted from the frying pan (eg, harmful gas, oil mist, and/or fine dust) may escape to the outside of the first housing 100 so as to be better absorbed.

The second housing 200 may also be made of a metal material, but the disclosed embodiments are not limited thereto. The first and second housings 100 and 200 may be rectangular shells having front, rear, left, and right sides for a user facing the kitchen hood 1 .

The second housing 200 may have a smaller length in the front and rear and left and right directions than the first housing 100 so as to be stably coupled to the inside of the first housing 100 and slide in and out to vertically elevate.

The suction grill 210 may be located on the left side surface and the right side surface of the second housing 200 . The suction grill 210 may be made of metal and may have a structure configured to filter contaminants from the air passing through the suction grill 210 .

The second housing 200 may include a steam cleaning assembly 600 ( FIG. 9 ) to discharge steam for cleaning the inside of the kitchen hood 1 . The steam cleaning assembly 600 will be described later. Steam cleaning may be performed automatically after cooking at regular time intervals or according to a user's command.

Referring to FIGS. 4A to 5 , the fan 300 may be positioned within a portion of the upper portion of the first housing 100 so that the fan 300 is positioned above the suction grill 210 . The fan 300 may be rotated to suck air through the suction grill 210 .

By the rotation of the fan 300, air is sucked into the inside of the second housing 200 through the suction grill 210 and rises toward the fan 300 through the first housing 100, and It may be configured to be discharged through the top.

Alternatively, if upper discharge is impossible, the sucked air may be discharged through the rear surface of the kitchen hood 1 . In this way, the shape, position, and direction of the fan 300 may be determined in response to air flow different from intake and discharge of air.

The fan 300 may have a fixed position on the upper portion of the first housing 100 , but the suction grill 210 may be raised and lowered according to the sliding movement of the second housing 200 .

The suction grill 210 can be released and separated from the second housing 200 for cleaning or repair, and the suction grill 210 is an additional contamination sensor or dust sensor to inform the user that the suction grill 210 is to be cleaned. can have

The suction grill 210 may be configured to be washable in a dishwasher or a general washing machine. An opening 210a through which the suction grill 210 can be accommodated for coupling with the second housing 200 may be formed on the left and right surfaces of the second housing 200 .

The opening 210a may be an inlet through which air is sucked into the second housing 200 by rotation of the fan 300 . Accordingly, the suction grill 210 may have a structure to filter contaminants in the suctioned air while covering the suction port.

The opening 210a may be partially formed on the bottom surface of the second housing 200 , and the suction grill 210 may have a bottom bent and extended from the side surface configured to be coupled to the opening 210a.

The suction grill 210 may be coupled to the second housing 200 through magnetic coupling. Details of the suction grill 210 and the fan 300 will be described in more detail below with reference to FIGS. 9 and 10 .

6 to 8 , the first housing 100 may include an outer case or outer housing 110 and an inner case or inner housing 120 . This outer case 110 may define the appearance of the kitchen hood 1 , and may also include an outermost surface of the kitchen hood 1 .

The second housing 200 may slide in and out of the inner housing 120 . By such a slide (sliding), at least a portion of the second housing 200 may be vertically elevated to the inside and outside of the inner housing 120 .

The inner housing 120 contains an air quality (AQ) sensor for detecting contaminants (e.g., carbon monoxide, carbon dioxide, methane, VOCs, smoke, dust, oil, or other harmful substances and gases) in the ambient air. can do. Such an air quality sensor will be described with reference to FIG. 23 below.

The outer housing 110 may include a display 130 configured to display air quality information, lighting information, cleaning information, temperature information, air volume information, operation information, or a user's suggestion for steam cleaning or removal of the suction grill 210 . can Alternatively or in addition to this, the operation state of the left suction and/or the right suction of the suction grill 210 may be displayed on the display 130, and the power, smart operation, automatic/manual operation, and proximity suction state may be displayed. there is.

In addition, the inner housing 120 may be formed to have a display mount or a display space 130a in which the display 130 is located. In addition, a plurality of distance sensors 801 may be installed on the lower surface of the outer housing 110 . The distance sensor 801 may measure a distance to an object located below the kitchen hood 1 . For example, it is possible to detect a distance between a cooking device under the kitchen hood 1 and a cooking tool placed on the cooking device. Or, of course, the distance from the upper part of the cooking device to the user's hand may be sensed in real time.

The outer housing 110 may extend from the side to the lower surface with a predetermined width, and the plurality of distance sensors 801 may be installed on the extended lower surface. In order to install the distance sensor 801, a distance sensor mounting groove may be formed on the lower surface of the outer housing 110, and the distance sensor 801 may be installed in this mounting groove. Each distance sensor 801 may be connected to a control unit to be described later, and a distance set by the distance sensor 801 may be transmitted to the control unit.

The plurality of distance sensors 801 may measure a distance to an object located below the kitchen hood 1 in real time when the kitchen hood 1 is operated under the control of the controller. In addition, the distance sensor 801 may measure the distance of an object located below the second housing 200 in real time even while the second housing 200 is stopped and/or is ascending or descending. Of course, the distance of the object may be measured while the fan 300 is operating and/or stopped. The distance sensor 801 may basically measure the distance to the cooking device 3 installed under the kitchen hood 1 ( FIG. 28 ). If there is a cooking tool in the cooking device 3 that generates heat (this is referred to as the heat generating unit 805 ), such as the cooker, induction, or stove, the distance to the cooking tool can be measured and cooking If you have a user's hand, you can also measure the distance to the hand. Accordingly, based on the distance measured by the distance sensor 801, it is possible to detect whether or not a cooking tool is present in the cooking apparatus 3 or whether a hand is present, and if present, the distance to the cooking tool or hand is measured. can do.

The plurality of distance sensors 801 may be formed with positions and numbers corresponding to the positions and numbers of the heat generating units 805 formed in the cooking apparatus 3 ( FIGS. 27 and 28 ). 27 and 28 show, for example, three heat generating units 805 and three distance sensors 801 corresponding thereto. Of course, these figures are subject to change. The distance sensor 801 is preferably installed on the lower surface of the first housing 100 at a position closest to the corresponding heat generating unit 805, respectively. The distance sensors 801 may be respectively installed to face the direction of the corresponding heat generating unit 805 . This is to accurately measure the presence or absence of a cooking tool in the heat generating unit 805 and a distance to the cooking tool. If the width of the lower surface of the kitchen hood 1 is substantially the same as the width of the cooking device 3 (preferably, it may be equal to or smaller than), the distance sensor 801 is located at the upper portion of the heat generating unit 805, respectively. It may be positioned to correspond to one-to-one correspondence. The distance sensor 801 may be implemented as a LiDAR sensor, a laser sensor, a camera, an infrared sensor, or an ultrasonic sensor.

The distance measured by the distance sensor 801 may be a basis for lifting and lowering the second housing 200 , an air volume by rotation of the fan 300 , and/or opening/closing of the damper 660 . Height adjustment of the second housing 200, opening and closing of the damper 660 to be described later (FIG. 19), light emission, and/or operation of the fan 300 may be based on the sensing by the distance sensor 801. there is. This will be explained in detail below.

In an embodiment, the display 130 may be formed integrally with a manipulation unit or an input device for inputting a user's manipulation. In this case, the display 130 may be implemented as, for example, a touch pad, a touch screen, or the like. By inputting a user's manipulation through a touch on such a touchpad or a touch screen, the hood 1 may be operated and various information according to the operation of the hood 1 may be displayed.

As an example, the display 130 has a power button for turning on/off the power of the kitchen hood 10 , a lifting button for operating manual lifting of the second housing 120 , an air volume adjustment button for adjusting the air volume, steam A plurality of buttons such as a steam cleaning button for cleaning may be displayed, and the user may select or input by touching these buttons so that a corresponding operation may be performed.

Alternatively or in addition to this, the display 130 may be provided with an audio output unit for outputting audio. The voice output unit is for audibly outputting a preset voice file to guide the user with necessary information. In this embodiment, the audio output unit may be implemented as a well-known speaker.

The outer housing 110 may include a door 111 hinged to the inner housing 120 . The outer housing 110 may be formed of four rectangular panels mounted on the front, rear, left and right sides of the inner housing 120 .

The door 111 may be a panel (eg, a left panel) hinged to a corner of the inner housing 120 through at least one hinge 114 . The door 111 may include a hook or a latch 113 for fixing the door 111 in a closed state.

Hooks 113 may be hung or clipped to corresponding grooves or latches in the inner corner of outer housing 110 and/or outer corner of inner housing 120 . Alternatively or additionally, the door 111 may be fixed in the closed state through magnetic coupling.

An opening 111a through which air passes so that the ambient air from the outside can contact the air quality sensor is formed in at least one of the left side or the right side of the door 111 to sense the surrounding air quality in an air quality sensor to be described later. can

The inner housing 120 may include an opening 112a through which the inside of the inner housing 120 may be exposed and a space 112b adjacent to the opening 112a. Devices inside the inner housing 120 (eg fan 300 ) may be repaired and/or replaced by opening the door 111 on the outer housing 110 and working through the opening 112a. .

The inner surface of the door 111 may include a protrusion or seal 112 coupled to the inside of the opening 112a or configured to seal a space 112b formed around the opening 112a and close the opening 112a. .

The interior surface of the door 111 , or at least the seal 112 , may include rubber, cushioning, or other soft, resilient material. The length, width, and depth dimensions of the protrusion 112 of the door 111 are equal to or slightly smaller than the length, width, and depth dimensions of the space 112b and/or the opening 112a of the inner housing 120 .

When the door 111 is closed, the protrusion 112 may cover the opening 112a, allowing air, steam, dust, or other contaminants to permeate through the opening 112a and the outer housing 110 and inner housing 120 ) to avoid getting caught between them.

The sensor assembly 500 may be located at the lower end of one side of the inner housing 120 . The sensor assembly 500 may include a plurality of air quality sensors, and these air quality sensors may detect the air quality of the air introduced through the opening 111a formed in the door 111 .

In addition to this, a plurality of temperature sensors 802 may be installed on the outer surface of the inner housing 120 or the inner surface of the outer housing 110 . In this embodiment, the first temperature sensor 802a at the front upper end of the inner housing 120, the second temperature sensor 802b at the center of the lower left side of the inner housing 120, and the lower right side at the center of the inner housing 120 A third temperature sensor 802c may be installed. The positions of the first, second, and third temperature sensors 802a, 802b, and 802c are merely examples, and their installation positions may be changed.

As an example, when a plurality of temperature sensors 802a, 802b, and 802c are installed at the top, left, and right sides of the inner housing 120, respectively, the outer housing 110 has air ventilated at positions corresponding to these temperature sensors. Opening portions 111a, 111b, and 111c for each may be formed. As another example, when the plurality of temperature sensors 802a , 802b , and 802c are installed in the outer housing 110 , these openings may not be formed.

Depending on the installation location, the first temperature sensor 802a may be referred to as an upper temperature sensor, the second temperature sensor 802b may be referred to as a left temperature sensor, and the third temperature sensor 802c may be referred to as a right temperature sensor. can be called The first temperature sensor 802a measures the ambient temperature of the upper portion of the kitchen hood 1 , and the second temperature sensor 802b and the third temperature sensor 802c are the left and right ambient temperatures of the kitchen hood 1 , respectively. can be measured.

Height adjustment of the second housing 200 , rotation of the fan 300 , opening/closing of the damper 660 , which will be described later, may be operated based on the temperatures measured by the plurality of temperature sensors 802 . For example, if the temperature of the left temperature sensor 802b is relatively higher than that of the right temperature sensor 802c, the left damper may be partially or fully open and the right damper may be closed. Conversely, the right damper may be partially or fully open and the left damper may be closed. The air volume by the fan 300 may be proportional to the magnitude of the temperature difference between the plurality of temperature sensors 802 . That is, as the temperature difference between the plurality of temperature sensors 802 increases, the rotation speed of the fan 300 may increase, thereby increasing the air volume.

The second housing 200 may include a door or cover 220 (front plate) having a handle 221 (eg, a push button or a groove). The cover 220 may be separated from the second housing 200 to expose the opening or the container passage 220a into which the liquid container 610 described with reference to FIG. 9 is inserted. The cover 220 may be located on the front side of the lower housing 200 , and the liquid container 610 may be separated when the second housing 200 is lowered. As will be explained in more detail with reference to FIGS. 9 and 15 to 22 , water and/or cleaning liquid is placed on a tray, heated, and a device inside the kitchen hood 1 (eg inside Steam cleaning for cleaning the inside of the housing 120, the fan 300, etc.) may be performed automatically or periodically, after a predetermined cooking frequency, according to a user's instruction, or additionally, a detected level or measurement of a contaminant. This may be done based on air quality measurements. Residues or condensed water generated during steam cleaning may be guided back to the liquid container 610 .

An additional fire emergency assembly 800 may be located under the second housing 200 to detect and extinguish a fire. The details of the fire emergency assembly 800 will be described in more detail with reference to FIGS. 15 to 18 . In addition to this, a lighting assembly 700 to be described later may be positioned under the second housing 200 . The lighting assembly 700 may include a plurality of lights 703 . Alternatively, the lighting assembly 700 may further include a proximity sensor 701 . This is explained in detail below.

9 and 10 , the second housing 200 may be vertically slid in and out of the first housing 100 through the sliding assembly 400 . By this slide, the second housing 200 may be vertically elevated from the inside to the outside of the first housing 100 and from the outside to the inside. The sliding assembly 400 may include at least one first rail 410 positioned on the inner surface of the inner housing 120 and at least one second rail 420 positioned on the outer surface of the lower housing 200 . . The second rail 420 may slide in and out of a groove, slot, or guide formed in the first rail 410 , and the first and second rails 410 and 420 may be referred to as female or male rails, respectively. Alternatively, the second rail 420 may have a groove, slot, or guide for sliding around the first rail 410 . The sliding assembly 400 is a driving assembly 450 (eg, a motor, an actuator, a pneumatic or hydraulic pump, or a rack and pinion) for automatically lifting the second housing 200 with respect to the first housing 100 . may include Details of the sliding assembly 400 will be described with reference to FIGS. 11 to 14 .

The panels forming the outer housing 110 have a rectangular shape having curved corners. The panels of the outer housing 110 may be relatively slightly longer and wider than the side surfaces of the inner housing 120 to surround the inner housing 120 . The panels of the outer housing 110 may be snapped together. Alternatively or in addition, the panels of the outer housing 110 may be secured (eg, screwed, attached, fused, glued, or welded) to the side surface of the inner housing 120 . The door 111 may not be attached to the inner housing 120 and may instead be hinged to a corner of the outer housing via a hinge structure 114 or a hinge. As an example. The inner housing 120 may have a shaft or pinion protruding from a corner, and the outer housing 110 may have a hinged knuckle or bracket configured to rotate around the shaft or pinion of the inner housing 120 .

Alternatively, as another embodiment, the outer housing 110 may have a shaft or a pinion that protrudes from a corner and is inserted into a hinge bracket that protrudes from the corner of the inner housing 120 . As another example, the door 111 may be hinged to another panel of the outer housing 110 instead of being coupled to the inner housing 120 . Embodiments disclosed herein are not limited to such hinged coupling.

The air quality (AQ) sensor assembly 500 may be located on at least one side (eg, a left side surface) of the inner housing 120 or the outer housing 110 . The air quality sensor assembly 500 may include a sensor for detecting dust, oil, smoke, odor, carbon monoxide, carbon dioxide, and other harmful gases or substances contained in air. The height adjustment of the second housing 200 , the operation of the fan 300 , and/or the steam cleaning operation may be based on an air quality measurement value measured by the air quality sensor assembly 500 . The outer housing 110 may have an opening or a through hole to allow air, dust, smoke, oil, etc. to reach the air quality sensor assembly 500 . For example, the air quality sensor assembly 500 may be located on the left side of the inner housing 120 so as to be behind the door 111 and the door 111 has a through hole or opening 111a aligned with the air quality sensor assembly 500 . can have The air quality sensor assembly 500 will be described in more detail with reference to FIGS. 21A, 21B and 23 .

The sides of the inner housing 120 may define an upper opening. The upper opening of the inner housing 120 is at least partially covered by the first upper frame 141 and the second upper frame 142 coupled (eg, welded or press-fitted) to the upper portion of the inner housing 120 . can be The first and second upper frames 141 and 142 may be coupled to each other to form the first housing upper frame 140 . The first upper frame 141 may be made of a metal or hard plastic material fixed to the upper portion of the inner housing 120 to provide rigidity, while the second upper frame 142 is the first upper frame 141 of the first upper frame 141 . It may be made of rubber or other elastic material coupled to the inside of the groove formed in the bottom, and the second upper frame 142 may serve as a seal, gasket, or cushion for the upper portion of the second housing 200 .

The first upper frame 141 may include a through hole or opening 141a, and the second upper frame 142 may include a through hole or opening 142a. When the first and second upper frames 141 and 142 are coupled to the upper portion of the inner housing 120 , the openings 141a and 142a of the first upper frame 141 and the second upper frame 142 are connected to the upper opening 140a. ) can be arranged to form The sucked air may be discarded or discharged through the upper opening 140a. An external exhaust duct or tube may be coupled to the first housing upper frame 140 and communicate with the upper opening 140a so that the sucked air may be discharged to the external space. Alternatively or additionally, an exhaust grill or replaceable filter may be formed or located in at least one of the openings 141a and 142a.

An additional wire through hole is formed in the first upper frame 141 and the second upper frame 142, and the fan 300, the driving assembly 450, the air quality sensor assembly 500, and the display using the electric wire provided through the wire through hole. Electricity may be supplied to 130, the lighting assembly 700, the sliding assembly 400, the steam cleaning assembly 600, and other devices, elements, and parts that require electricity. The electric wire may be coupled to a terminal located on the top or side of the first housing 100 (eg, inside or below the upper frame 140 of the first housing or on the rear surface of the inner housing 120 ). A terminal may be configured to accept an external power source from a commercial power source (eg, a wall socket) and may include a socket and a plug to which a cable may be connected.

The fan 300 may be a centrifugal fan that sucks in air in an axial direction and discharges air in a radial direction. For example, the fan 300 may be a straight radial fan, a front curved fan, or a back curved fan. The fan 300 may be positioned such that the axial direction of the fan 300 is aligned in the front-rear direction, but embodiments disclosed herein are not limited thereto. The wings of the fan 300 may be formed in a shape and an angle to reduce noise in intake and discharge of air.

The fan 300 may be located in the fan housing 310 and may be rotated by driving a fan motor (not shown) installed in the fan housing 310 . The fan housing 310 may serve as an air guide, may extend in a spiral shape, and may be configured to guide air to be discharged from the fan 300 in an upward direction. The fan housing 310 may be fixed to the bottom surface of the second upper frame 142 at the center so as not to interfere with the sliding movement of the second housing 200 , and the first upper frame 141 further seals the upper portion. It may be located on the upper portion of the second upper frame 142 in order to The direction of the fan 300 and the fan housing 310 may be configured such that the discharged air is guided through the openings 141a and 142a of the first housing upper frame 140 . If top venting is not possible, an adapter can be used to close the top opening 140a, and a rear adapter plate (not shown) can be removed for venting through the back.

The length in the front-rear direction of the fan housing 310 may be greater than or equal to the length in the front-rear direction of the fan 300 to protect the fan and guide the discharged air. The upper portion of the fan housing 310 may be larger in left and right directions and front and rear lengths than the left and right lengths and front and rear lengths of the first and second openings 141a and 142a of the first housing upper frame 140 . The upper portion of the fan housing 310 has one side (eg, the left side) to uniformly guide the air discharged to the outside of the first and second openings 141a and 142a of the first housing upper frame 140 . It may include an inclination extending upwardly from above the center of the fan 300 towards.

The second housing 200 may define an upper opening. The first upper frame 241 and the second upper frame 242 may be coupled (eg, press-fitted or welded) to the upper portion of the second housing 200 . The first and second upper frames 241,242 may be coupled to each other to form the second housing upper frame 240 . The second upper frame 242 may be coupled (eg, welded or press-fitted) to the upper edge or rim of the second housing 200 to provide rigidity to the second housing 200, and the first upper frame ( 241 may be coupled in a groove positioned on the upper portion of the second upper frame 242 . The first upper frame 241 may be made of an elastic material (eg, rubber) or cushion to serve as a cushion, seal, or gasket when the second housing 200 is completely inserted into the first housing 100 . can When the second housing 200 is completely inserted into the first housing 100 , the second housing upper frame 240 may contact the first housing upper frame 140 , and noise is reduced during collision or contact. can

The second upper frame 142 of the first housing 100 forms a seal and prevents air, steam, dust, or other foreign matter from entering the space between the first and second housings 1000 and 200 . and may have a groove in which the rim of the first upper housing 241 of the second housing is positioned to prevent the sucked air or steam from escaping. Each of the first and second upper frames 241,242 allows the fan housing 310 to pass through these upper frames 241,242, and the openings of the first and second upper frames 141 and 142 of the first housing 100 ( 141a, 142a) may have a large through hole or opening so that the air sucked by the fan 300 is not prevented from being discharged.

The steam cleaning assembly 600 may be located inside the second housing 200 . The steam cleaning assembly 600 may include a liquid container 610 into which a detergent liquid such as water, detergent, chemicals, or cleaning liquid may be inserted. The liquid container 610 may be inserted or separated into the container guide 611 formed on the bottom of the second housing 200 . The container guide 611 may be a rectangular frame defining the container passage 220a which is an opening into which the liquid container 610 is inserted. The tip frame or plate 613 may be located on the front side of the liquid container 610 . The tip frame 613 may be coupled to the cover 220 . In addition, the liquid container 610 may be automatically or manually drawn in and out of the second housing 200 . In the case of automatic withdrawal and withdrawal, the second housing 200 may be slid into and out of the second housing 200 by a pull-out motor. When manually withdrawing, the liquid container 610 is physically separated from the withdrawal motor, and the user can manually withdraw and withdraw the liquid container 610 .

A withdrawal/intake detection sensor for detecting that the liquid container 610 is drawn out and drawn into the inside and outside of the second housing 200 may be provided. The withdrawal/input detection sensor may be implemented as, for example, a Hall sensor. A magnetic material is attached to the liquid container 610, and a Hall sensor is attached to a predetermined position of the second housing 200 in a state in which the liquid container 610 is inserted, that is, a position corresponding to the magnetic material to determine the position of the magnetic material from the Hall sensor. By detecting, it is possible to detect the inlet and outlet of the liquid container 610 . For example, when the magnetic material approaches within a set distance from the Hall sensor, the inlet of the liquid container 610 can be detected, and when the magnetic material is outside the set distance, the withdrawal of the liquid container 610 can be detected.

The water or aqueous solution stored in the liquid container 610 may be heated by the steam generator 612 (FIG. 17) to generate steam. The steam generated in this way may be delivered to the steam distributor 670 located at the upper portion of the inner housing 120 to clean the fan 300 and the inside of the inner housing 120 . The steam distributor 670 may be in the shape of a tube or pipe having a square or ring shape coupled to the upper portion of the steam cleaning assembly 600 or otherwise to the inner surface of the second housing 200 . Alternatively, the steam distributor 670 may form a U-shape or a ┗┛-shape, wherein the opening may face the front, top, side, or the like of the second housing 200 . Alternatively, the steam distributor may be formed as a hollow rectangular frame or showerhead. The shape and configuration of the steam distributor 670 is not limited.

A tube or channel 671 ( FIG. 11 ) can connect the steam distributor 670 to the steam generator 612 ( FIG. 17 ) so that steam can travel through the tube 671 to the steam distributor 670 . Alternatively, tube 671 may be a pipe. The steam distributor 670 may have a plurality of through holes or nozzles 672 ( FIG. 14 ) through which steam may be discharged to clean the interior of the inner housing 120 . Depending on the design requirements, the cross-sectional shape of the tube may be round, square, polygonal, triangular, etc. The direction of the steam discharged from the furnace 672 may be a lateral direction (horizontal), an upper surface direction (vertical), or an upward direction (upper slope) from the side of the second housing 200 .

The steam cleaning assembly 600 may include a condensate guide or collector 650 configured to collect condensate and other residues and guide the return of the condensate to be discarded to the liquid container 610 . The left and right sides of the condensate guide 650 may have a general inward inclination from top to bottom to guide the downward flow and return of the liquid to the liquid container 610 . The front plate and the rear plate 653 of the condensate guide 650 may be coupled to the upper portion of the inner surface of the second housing 200 (eg, screwed, press-fitted, glued, or welded). The back plate 653 may be spaced from the inner surface of the first housing 100 to make room for the tube 671 , or alternatively may be formed to have space in which the tube 671 may be located. .

The left and right sides of the condensate guide 650 may include a plurality of tabs or ribs 651 spaced apart from each other along a general inclination defined by the condensate guide 650 . The tabs 651 may be stair-like and may extend between the front or back plates 653 of the condensate guide 650 . The tabs 651 may be vertically spaced apart from each other, and the tabs 651 may not vertically overlap each other or may only partially overlap each other vertically. The tabs 651 may have a slight downward slope to guide the condensate down. Alternatively, the tabs 651 may extend in a horizontal direction. The tabs 651 will be described in more detail with reference to FIGS. 15 to 18 .

The damper assembly 662 may be located under the condensate water guide 650 . The damper assembly 662 may include a damper 660 and a gear 661 rotating the damper 660 . The gear 661 may be operated by a damper driving motor (not shown) installed inside the damper assembly 662 . Gear 661 is described below. The first condensate passage 662a may be located inside the damper assembly 662 . The bottom plate 655 of the condensate water guide 650 may be positioned above the damper assembly 662 to close the upper opening of the damper assembly 662 . And the bottom plate 655 may have a through hole or opening 650a aligned with the first condensate passage 662a. The bottom plate 655 may be slightly inclined or curved towards the opening 650a to guide the condensate towards the opening 650a so that the condensate falls into the first condensate passageway 662a and eventually to the liquid container 610. .

An additional liquid guide 663 may be positioned between the damper assembly 662 and the container guide 611 , and an additional second condensate passage 663a is aligned with the first condensate passage 662a of the damper assembly 662 . It may be located in the liquid guide 663 at a position where the At this time, the height of the liquid guide 663 and the condensate passage 662a may be configured such that there is a continuous passage from the opening 650a of the condensate guide 650 to the liquid container 610 inserted in the container guide 611 .

The container guide 611 may define a container passage 220a which is an opening into which the liquid container 610 is inserted, and the liquid container 610 may slide in and out of the container guide 611 . The second condensate passage 663a may communicate with the open upper part of the container guide 611, or alternatively, if the liquid guide 663 is omitted, the first condensate passage 662a is the container guide 611. It can communicate with the open top of the. The condensed water enters back into the liquid container 610 for disposal through the opening 650a of the condensate water guide 650 and the first and second condensate passageways 662a and 663a inside the damper assembly 662 and the liquid guide 630. You can be guided down through

The damper assembly 662 , the liquid guide 663 , and the container guide 611 may all be rectangular frames having an open top, but embodiments disclosed herein are not limited thereto. The damper assembly 662 and the liquid guide 663 are integrally formed as one frame, or alternatively, they may be formed separately and then combined.

The inner surface of the second housing 200 may include a curved portion 652 that is curved inwardly under the condensate guide 650 on the left side and the right side. The curved portion 652 may have an inwardly curved surface or an inclination from top to bottom so that the condensed water mistransferred is guided downward. The lower portion of the curved portion 652 may have an opening into which the upper portion of the suction grill 210 is inserted, and the curved portion 652 may support the upper portion of the suction grill 210 .

The damper 660 (eg, butterfly, guillotine, louver, or vane type) may be positioned between a lower portion of the curved portion 652 and a lower portion of the damper assembly 662 . The damper 660 may be configured to open and close a suction passage defined between the left side and the right side of the steam cleaning assembly 600 and the second housing 200 . That is, the damper 660 may open and close a portion of a flow path in which air sucked through the suction grill 210 rises and is discharged through the upper portion of the kitchen hood 1 . The damper 660 may be inclined inwardly from top to bottom when closed. A gear 661 may be positioned inside the damper assembly 662 to open, partially open, and close the damper 660 . There may be additional walls or frames on the inside of the damper assembly 662 to enclose and protect the gear 661 . The damper 660 may be opened and closed by operating by a damper driving motor. As the damper driving motor rotates, the gear 661 may operate to open and close the damper 660 . The damper driving motor may be driven by the controller as will be described later.

The degree of opening of the damper 660 may be determined by various conditions. For example, during steam cleaning, it may be adjusted according to the position of the heat generating unit in operation, ambient temperature, air quality measurement values, and the like. During steam cleaning, the fan 300 may be operated to suck steam upward to clean upper portions of the fan 300 , the fan housing 310 , the inner case 120 , and the second housing 200 .

Alternatively, the damper 660 may be closed during steam cleaning to prevent oil and dust remaining on the suction grill 210 from rising upward, and to trap any errant residue that falls through the tab 651 . there is. The at least one damper 660 may be open or partially open during air cleaning or purging when the fan 300 is operating. More details of the steam cleaning assembly 600 will be described later with reference to FIGS. 18 to 22 .

The suction grill 210 may be located on the side surface (eg, the left side and the right side) of the second housing 200 and a portion of the lower surface that extends from these sides to the lower surface, respectively. The suction grill 210 may be made of metal and may be formed of a plurality of curved or semi-cylindrical slats or tabs aligned in a vertical direction to resemble a window blind. There may be a plurality of layers or grills formed of semi-cylindrical slats in the left and right directions. For example, FIG. 10 shows a first or inner grill of a semi-cylindrical slat and a second or outer grill of a semi-cylindrical slat.

From the outside, the outer grill of a semi-cylindrical slat may appear to have a convex curvature, whereas the inner grill of a semi-cylindrical slat may have the opposite curvature. The front and rear cross-sections of the inner grill of the semi-cylindrical slat may have a ⊂ shape, while the front and rear cross-sections of the outer grill of the semi-cylindrical slat may have a ⊃ shape. The semi-cylindrical slats of the inner grill may alternate with the semi-cylindrical slats of the outer grill. The shape of the suction grill 210 may be configured to capture foreign substances (eg, oil or fine dust) from the sucked air.

A lower portion of the second housing 200 may include a lighting assembly 700 for illuminating light under the kitchen hood 1 . The lighting assembly 700 may illuminate the light manually for the user, or may automatically illuminate the light when a specific condition is satisfied. For example, when the user approaches within a certain distance, the light can be automatically illuminated, or as another example, when the second housing 220 is lowered and the distance from the cooking tool placed on the cooking device is within a certain distance, the light is automatically emitted. It can also be lit up. The lighting assembly 700 may further include a proximity sensor capable of detecting a user approaching the cooking device or the kitchen hood 1 or measuring a distance to the adjacent user. Accordingly, the lighting assembly 700 may detect how close the user is to the kitchen hood 1 , and may illuminate the light or operate the fan 300 based on how close the user is. Details of the lighting assembly 700 will be described below with reference to FIGS. 25 and 26 .

11 to 14 , the sliding assembly 400 may be automatically operated by the driving assembly 450 . The operation of the driving assembly 450 and the rotation of the fan 300 are detected by the air quality sensor assembly 500 or the lighting assembly 700 (FIG. 9), detected by the distance sensor 801, steam cleaning It may be based on the start of an operation, or may be operated by a control unit to be described later based on an instruction input by a user. The adjustment of the height of the second housing 200 through the driving assembly 450 and the adjustment of the suction force through the speed of the fan 300 may be performed by the controller in various ways.

At least one first rail 410 may be coupled (eg, screwed, attached, adhered, or welded) to the inner surface of the inner case 120 . There may be four first rails 410 positioned near the edge of the inner case 120 . For example, one first rail 410 is to be located on the left side of the front or side of the inner case 1200, the right side of the front or side, the left side of the back or side, and the right side of the back or side of the inner case 1200, respectively. However, the embodiments disclosed herein are not limited to the number and location of the first rail 410 described. As an alternative embodiment, one first rail 410 may be located in the center of the rear surface of the inner case 120 , and another first rail 410 may be located in the center of the front surface of the inner case 120 . can In another alternative embodiment, one first rail 410 may be located at the center of the left surface or side of the inner case 120 , and another first rail 410 is the first rail 410 . It may be located in the center of the right surface or side of the inner case 120 so as to be on the left side and the right side. According to the structural rigidity of the first rail 410 and the second rail 420 , there may be only one first rail 410 (eg, on the rear surface).

At least one second rail 420 is coupled to the outer surface of the second housing 200 at a position corresponding to the first rail 410 to be coupled to the first rail 410 (eg, screwed, attached, glued, or welded). In the example of the four first rails 410 positioned near the edges of the inner case 120 , there may be four second rails 420 positioned near the edges of the second housing 200 . For example, one second rail 420 may be located on the front left portion, the front right portion, the rear left portion, and the rear right portion, respectively. Embodiments disclosed herein are the second rail 420 ) is not limited to the number and position described.

The first rail 410 may be formed as a rectangular frame or bar having a groove. The entire second rail 420 may engage within the groove of the first rail 410 , or alternatively, the second rail 420 may include a protrusion sized to engage within the groove of the first rail 410 . may include As another alternative example, the second rail 420 may include a groove, and the first rail 410 and/or additional projections of the first rail 410 may be formed within the groove of the second rail 420 . It may be configured to slide. The shapes and contours of the first and second rails 410 and 420 are not limited.

The upper portion of the first rail 410 prevents the second housing 200 from sliding upwards too much and prevents the housing upper frame from collided with, or the fan housing 310 and the condensate guide 650 collide. It may have additional ledges or stoppers to prevent it. The second rail 420 may be formed of a solid bar and may have a rigid top surface configured to collide with a stopper of the first rail 410 to prevent further upward movement.

The lower portion of the first rail 410 includes an additional chin or stopper to prevent the second housing 200 from being separated from the first housing and to help support the second housing 200 in a fully extended state. can do. The chin may be provided at a position that does not interfere with upward movement of the second rail 420 (eg, from the side). The upper portion of the second rail 420 may have a hook or a protruding rim configured to be hung on a chin positioned below the first rail 420 in a fully extended state.

The driving assembly 450 may be located in the inner case 120 at a position that does not interfere with the first rail 410 (for example, on the rear surface between the two first rails 410, or as another example, (on the side of a single centrally located first rail 410). In addition, the driving assembly 450 may include a housing 454 coupled to the side surface of the first rail 410 . Alternatively or additionally, the drive assembly 450 may be coupled (eg, glued, welded, or screwed) to the rear inner surface of the inner case 120 . The housing 454 may include a lifting motor 453 (or an actuator, or a hydraulic or pneumatic pump) configured to raise and lower the second housing 200 .

The lifting motor 453 may rotate a shaft or a pinion coupled to the gear 452 . The rack 451 may be located outside the rear surface of the second housing 200 . Here, the housing 454 , the lifting motor 453 , the gear 452 , and the positions of the rack 451 may be configured such that the gear 452 is aligned with the rack 451 . The gear 452 may have teeth formed on the outer circumferential surface, and the rack 451 may be formed to have grooves or teeth configured to engage the teeth of the gear 452 . When the lifting motor 453 rotates the gear 452 in the first direction (eg, clockwise), the teeth of the gear 452 may press the teeth of the rack 451 downward, and the second housing (200) can descend. When the lifting motor 453 rotates the gear 452 in a second direction (eg, counterclockwise) opposite to the first direction, the teeth of the gear 452 push the teeth of the rack 451 upward and , and the second housing 200 may be raised or lifted. The upper or lower end of the rack 451 may have additional jaws or stoppers, respectively, in order to prevent the rack 451 from being disengaged from the gear 452 .

There may be two gears 452 and two racks 451 so that the rising and falling of the second housing 200 are stable. There may be two lifting motors 453 that can operate simultaneously so that each gear 452 rotates at the same speed. Alternatively, the same lifting motor 453 may rotate each gear 452 so that the speed of the gears 452 is matched and the weight of the drive assembly 450 is reduced. The embodiments disclosed herein are not limited to the two gears 452 and the two racks 451 , and the plurality of gears 452 , the rack 451 and/or the elevating motor 453 are provided in the second housing 200 . ) can be provided for better fixation and support. As another alternative example, there may be only one rack 451 , one gear 452 , and one lifting motor 453 .

A rear surface of the second housing 200 may include a rectangular bar or protrusion 231 and an upper jaw 232 . There may be two bars 231 formed on left and right sides or edges of the rear surface of the second housing 200 and two upper jaws 232 on top of the two bars 231 . The number of the bar 231 and the upper jaw 232 may be the same as the number of the second rail 420 .

The second rail 420 may be coupled to the bar 231 at the lower portion of the upper jaw 232 so that the upper portion of the second rail 420 contacts the bottom of the upper jaw 232 . When a stopper or chin is formed on the upper portion of the first rail 410 to protrude forward, the stopper or chin of the first rail 410 is the upper chin 232 when the kitchen hood 1 is completely shortened or reduced. ) can be seated on top of the The protruding length of the upper jaw 232 may be less than or equal to the front and rear length of the second rail 420 . The left and right lengths of the upper jaw 232 may be less than or equal to the left and right lengths of the grooves formed in the first rail 410 so as not to impede the sliding movement.

The rack 451 may be located on the rear surface of the second housing 200 at a position adjacent to the bar 231 , and the housing 454 is disposed between the racks 451 so as not to interfere with the lifting and lowering of the second housing 200 . can be located. The gear 452 may protrude from the housing 454 in the left and right directions to align with the rack 451 .

14 , housing 454 may cover gear 452 and may extend toward bar 231 to engage first rail 410 , housing 454 may cover gear 452 . ) may include a tip opening or through-hole exposed to be coupled to the rack 451 . The housing 454 may additionally have left and right side openings or through holes, and an additional gear cover 452a may be positioned on the side of the gear 452 to protect the gear 452 . The gear cover 452a may rotate together with the gear 452 . The gear cover 452a is not flush with the side surface of the housing 454 so that the bar 231 and/or the first rail 410 does not interfere with the rotation of the gear 452 and the gear cover 452a. Alternatively, if the housing 454 is mainly coupled to the inside of the rear surface of the inner case 120 and is not coupled with the first rail 410 so as to be spaced apart from the bar 231 in the left and right directions, the gear cover 452a is the housing ( 454) is flush with the side.

As another alternative example, the housing 454 of the sliding assembly 400 is the inner surface of the outer case 110 of the first housing 100 so as to be closer to the installation bracket of the kitchen hood 1 for added support. It can penetrate through the inner case 120 to be fixed to the. The inner case 120 may include an opening through which the housing 454 protrudes so that the rack 451 fixed to the second housing 200 and the gear 452 are coupled. Although FIG. 14 shows the hook 20 positioned below the housing 454 , alternatively or additionally, the hook 20 corresponds to the height of the center of gravity of the housing 454 to well support the housing 454 . It can be provided at any height.

15 to 18 , the liquid container 610 may be drawn into and out of the second housing 210 . Specifically, the liquid container 610 may be configured to slide in and out of the container guide 611 to be drawn in and out. The container guide 611 may be located in the lower portion of the second housing 200 to define a passage having a left and right length greater than or equal to the left and right length of the liquid container 610 . The container guide 611 may be formed to have a ┗┛ shape (or alternatively, a U-shape), but embodiments disclosed herein are not limited thereto. The liquid container 610 may be a rectangular container (or alternatively a cylindrical container) having a top opening. A lid 614 may be positioned proximate to the upper opening of the liquid container 610 .

The lid 614 may be located on the upper portion of the liquid container 610 during steam cleaning. The lid 614 is formed with a guide 614a, which may be a slope that slopes down from the top of the lid 614 . There may be an opening 614b formed below or adjacent to the guide 614a. An opening 614b may extend between a lower portion of the guide 614a and an upper portion of the lid 614 . The guide 614a may communicate with the lower portion of the second condensate passage 663a (or alternatively, if the liquid guide 663 is separated, with the lower portion of the first condensate passage 662a) condensate collector 650 ) and the first and second condensate passages 662a and 663a, and the collected condensate is guided downward to the liquid container 610 through the guide 614a and the opening 614b of the lead 614. can

The left and right lengths of the container guide 611 may be shorter than the left and right lengths of the entire front surface of the second housing 200 and/or the distance between the suction grills 210 . The side (eg, left side or right side) of the container guide 611 is in advance from the suction grill 210 so that air is efficiently sucked through the suction grill 210 and discharged through the upper part of the first housing 100 . They may be spaced apart by a predetermined distance.

The tip frame 613 and the cover 220 may have a left and right length greater than the left and right length of the container guide 611 and may extend between the left and right surfaces of the lower housing 200 . The cover 220 may have a handle 221 (eg, a button or a groove), and the tip frame 613 may have a space for accommodating the rear surface of the handle 221 . The user may pull the handle 221 to slide the liquid container 610 from the container guide 611 .

A user may fill the liquid container 610 with water, chemicals, detergent, or other cleaning liquid. The liquid container 610 may have an additional wall to separate the liquid container 610 into two or more barrels or parts. For example, the liquid container 610 may include a first cylinder or liquid distributor 610a and a second cylinder or a condensate collector 610b. The first cylinder 610a may be provided at a position adjacent to the steam generator 612 (ie, at the rear end), while the second cylinder 610b is positioned at a position aligned with the guide 641a of the lid (ie, the tip end). e) can be provided. The cleaning liquid may be filled in the first barrel (610a), while the condensed water may be guided down and collected in the second barrel (610b).

At least one of the container guide 611 and the liquid container 610 may have an additional water level sensor 702 for detecting the amount of liquid stored in the liquid container 610 . For example, the container guide 611 may have a weight sensor. As another example, the liquid container 610 may have a capacitive sensor. The embodiments disclosed herein are not limited thereto. The operation of the steam generator 612 may be based on the amount of water sensed by the additional water level sensor 702 . For steam cleaning, a sufficient amount of liquid (eg, 350 to 400 ml) is placed in the liquid container 610 , the second housing 200 is inserted into the first housing 100 , and the damper 660 is closed. It may not start until

The rear end of the first cylinder 610a may have a seal or nozzle 615 configured to be opened and closed. The steam generator 612 (eg, a heater) may be located inside the second housing 200 behind the container guide 611, or alternatively, the container guide 611 at the back of the liquid container 610. may be located on the inside of The steam generator 612 may also have a projection 617 having an opening 617a configured to engage the seal 615 . The seal 615 may be formed of an elastic material (eg, rubber) and may also have an opening configured to close in an initial state or a rest state. The protrusion 617 can be press-fitted into the opening of the seal 615 to open the seal 615 and allows liquid to enter the steam generator 612 from the liquid container 610 through the opening 617a. Alternatively or additionally, at least one of the seal 615 or opening 617 may have a valve configured to open and close.

During steam cleaning, the liquid entering the steam generator 612 may be heated. The steam generator 612 may be coupled to the steam distributor 670 through a tube 671 . The steam generated by the steam generator 612 may go up to the tube 671 and enter the inside of the steam distributor 670 . The tube 671 may have a left and right length longer than the front and rear length so that the steam can be dispersed when it enters the steam distributor 670 .

The steam distributor 670 may be similar to a rectangular or rectangular frame to have a horizontal cross-sectional shape that matches the horizontal cross-sectional shape of the second housing 200 . Alternatively, the steam distributor 670 may be a ring. The inside of the steam distributor 670 may be hollow. The steam distributor 670 may have an opening in the center to reduce the interference between the suction air moving upward and the condensed water falling downward. 18 to 22 , the steam distributor 670 may cover the periphery of the inner space of the second housing 200 . The steam distributor 670 may be coupled to the front plate and the rear plate 653 of the condensate collector 650 under the fan 300 . Alternatively, the steam distributor 670 may be fixed to the inner surface of the second housing 200 adjacent to the condensate collector 650 .

Steam may enter the inner space of the steam distributor 670 through the tube 671 . The steam distributor 670 and the tube 671 may be formed as one tube or pipe, or alternatively may be formed separately and then combined. Nozzles 672 can be open to exhaust steam and closed to collect steam. The nozzles 672 may be formed on the inside of the steam distributor 670 to face the center of the housing. The nozzles 672 may be formed on the left and right inner surfaces of the steam distributor 670 and may be spaced apart from each other at equal intervals. Alternatively or additionally, the nozzles 672 may also be formed inside the front and rear ends of the steam distributor 670 .

The nozzles 672 may be formed of an elastic material (eg, rubber) configured to be opened based on the pressure inside the steam distributor 670 . Alternatively or additionally, the nozzles 672 may have valves controlled based on an additional pressure sensor located in the steam distributor 670 , and the pressure inside the steam distributor 670 may be at a predetermined pressure level or higher. When high is sensed, the nozzles 672 may automatically open to expel steam. Steam may be diffused into the second housing 200 . A portion of the steam may rise to clean the inside of the fan 300, the fan housing 310, and the inner case 120 of the first housing 100, and a portion of the steam is a condensate collector 650, and / or it may fall to clean the inside of the second housing 200 .

The steam may produce condensate, which may be captured by the condensate collector 650 . Other falling objects (eg, dust or oil) may fall through the interior of the second housing 200 and/or the first housing or run down along the sides and become trapped by the condensate collector 650 . can

The condensate collector 650 may be a guide having a plurality of tabs 651 , front and back plates 653 , and inclined left and right sides defined by an upper opening. The upper part of the condensate collector 650 defining the upper opening is the inner space of the second housing 200 so that falling dust, oil, or condensate does not pass through the condensate collector 650, each of the left and right lengths and front and rear lengths and It may have the same or slightly smaller left and right lengths and front and rear lengths.

The condensate collector 650 may guide the condensed water to the liquid container 610 . The bottom plate 655 of the condensate collector 650 may be formed to have an opening 650a through which the condensate is guided. The opening 650a may communicate with the opening of the first condensate passage 662a (FIG. 19), and may have a left and right length and a front and rear length equal to or shorter than the left and right length and front and rear length of the first condensate passage 662a. there is. The bottom plate 655 of the condensate collector 650 falls down through the first condensate passage 662a and the second condensate passage 663a inside each of the damper assembly 662 and the liquid guide 663 and falls down to a liquid container The bottom plate 655 of the condensate guide 650 may be optionally inclined or curved to guide the collected condensate and other liquids towards the opening 650a to enter the 610, for example, the opening 650a It may be inclined downward from the rear end to the front end where it is located, and/or it may be inclined from the left and right to the center where the opening 650a is located.

The front and rear surfaces of the condensate collector 650 may be formed of front and rear plates 653a and 653b, respectively, which may have a rectangular and/or trapezoidal shape. The front surface of the front plate 653a may be coupled (eg, screwed, attached, adhered, or fused) to the front surface of the second housing 200, and the side surfaces of the front plate 653a are the second housing ( 200) can be coupled to the left and right sides. The back side of the back plate 653b may be spaced from the back side of the second housing 200 to allow space for the pipe 671, or may alternatively be coupled to the back side of the second housing 200 and It may be formed to have a space for accommodating the 671 . Side surfaces of the rear plate 653b may be coupled to left and right sides of the second housing 200 .

The upper portions of the front plate and the rear plate 653 may be square or rectangular, and may extend between the left and right sides of the second housing 200 . The lower portions of the front plate and the rear plate 653 may have a trapezoidal shape such that the left and right lengths decrease from the top to the bottom. Lower ends of the front and rear plates 653 may be coupled to a damper assembly 662 that may be formed as a hollow rectangular frame.

The steam distributor 670 may be coupled to upper ends of the front plate 653a and the rear plate 653b. The rear plate 653b may have an opening into which the upper end of the tube 671 is inserted to be coupled to the steam distributor 670 .

A rectangular side plate 654 may extend between the front plate and the back plate 653 . The side plate 654 may be coupled (eg, welded or glued) to the lower portion of the rectangular or square portion of the front plate and the rear plate 653 so as not to interfere with the steam distributor 670 . The side plate 654 may be coupled (eg, screwed, bolted, attached, glued, or welded) to the inner side surfaces of the left and right sides of the second housing 200 , or alternatively the left side plate and the right side surface. You can call it a plate.

Tabs 651 may extend between the lower or trapezoidal portions of the front plate 653a and the back plate 653b. Since the left and right lengths of the lower portions of the front plate 653a and the rear plate 653b have an inverted trapezoidal shape and decrease from the top to the bottom, the tab 651 at the lowest position is second than the highest tab 651. It may be closer to the center of the housing 200 .

Side bars or plates 653c may be formed at edges of lower portions of the front plate 653a and the rear plate 653b so that they protrude inward. The tabs 651 may be formed or coupled to the sidebar 653c , thereby adding rigidity and stability to the tabs 651 and the entire condensate guide 650 . An upper portion of the tab 651 in the highest position may be coupled to a lower portion of the side plate 654 . The tab 651 at the lowest position may be coupled to the condensate water guide 650 and/or the bottom plate 655 of the damper assembly 662 . There may be an optional bar connected to the center of the tabs 651 to provide additional support and rigidity. The tabs 651 may be inclined slightly downward to guide the condensate down to the damper assembly 662 .

Damper assembly 662 may have outer walls 666 and 667 forming a rectangular housing surrounding gear 661 and a damper drive motor that rotates damper 660 ( FIGS. 19 and 20 ). The first condensation guide 662a ( FIGS. 19 and 20 ) may be positioned so as not to interfere with the gear 661 and the damper driving motor.

The damper assembly 662 may also include inner walls 664 and 665 extending between the upper and lower surfaces of the damper assembly 662 at positions inside the outer walls 666 and 667 . The inner walls 664 and 665 may extend between the tip of the bottom plate 655 of the condensate guide 650 and the lower portion of the damper assembly 662, and the first condensate passage 662a is formed between the inner walls 664 and 665. can be located. Alternatively or in addition, the inner walls 664 and 665 may be formed to partition the interior of the damper assembly 662 to protect the gear 661 and the damper drive motor from falling condensate. Although Fig. 15 shows a cross-sectional view, Figs. 16 and 17 show that the damper assembly has a leading end wall 662F and a rear end wall 662R such that the outer walls 666 and 667 and the leading and rear end walls 662F and 662R form a rectangular housing. seems to do The tip wall 662F may cover the inner walls 664 and 665 and the first condensate passage 662a (FIG. 19).

The first condensate passageway 662a ( FIG. 19 ) may be located inside the damper assembly 662 under the opening 650a in the bottom plate 655 of the condensate collector 650 . The damper assembly 662 may have an additional upper surface having an opening 650a and an opening communicating with the first condensate passage 662a. The falling condensate may be guided downward through the damper assembly 662 and the liquid guide 663 through the first condensate passage 662a.

Exterior walls 666.667 may define exterior left and right sides of damper assembly 662 . The dampers 660 may be hinged to the lower portions of the outer walls 666 and 667 so that, when closed, the upper ends of the dampers 660 contact the curved portion 652 of the inner surface of the second housing 200 . Details of the gears 661 and dampers 660 will be described with reference to FIGS. 19 to 21B .

The liquid guide 663 may be a rectangular frame defining an upper opening located below the damper assembly 662 . The lower portion of the damper assembly 662 may be coupled to the liquid guide 663 to close the upper opening, and the first condensate passage 662a is a second condensate passage 663a located inside the liquid guide 663. can be sorted with The left and right sides of the liquid guide 663 may include guides positioned below the lower end of the damper 660 to guide the condensed water falling to the damper 660 to the second condensate passage 663a.

The first and second condensate passages 662a and 663a may be aligned with the guide 614a formed in the lid 614 . The guide 614a may be formed with an inclined surface inclined downward from the top of the lead 614 so that an opening or a gap 614b may be formed between the bottom of the guide 614a and the top of the lead 614. there is. Liquid or condensed water may flow into the liquid container 610 through the lower opening. The embodiments disclosed herein provide a damper assembly 662, a liquid guide 663, and a condensate collector 650 as long as there is a downward passage connecting the condensate collector 650 to the liquid container 610 and the lid 614. It is not limited to the described configuration of

The lid 614 may cover the upper opening of the liquid container 610 . There may be a chin or groove formed in the inner upper portion of the liquid container 610, and the lid 614 may be configured to be seated on the chin to be fixed. The liquid container 610 may be configured to slide to and from the bottom surface of the container guide 611 formed in the second housing 200 . Left and right inner sides of the container guide 611 and/or the bottom surface of the container guide 611 may include additional guide rails or guide grooves, and the left and right outer sides and/or of the liquid container 610 The lower surface of the liquid container 610 may include an additional guide groove or guide rail for guiding the sliding operation of the liquid container 610 .

The tip frame 613 of the liquid container 610 is defined in the container guide 611, and is provided on the tip surface of the second housing 200 when the liquid container 610 is completely drawn into the second housing 200. It may be configured to cover the container passage 220a, which is an opening. The tip frame 613 may be coupled to the cover 220 , and the cover 220 may include a handle 221 . The front of the front end frame 613 may be concave to accommodate the groove or cavity formed in the handle (221). The user may pull the handle 221 to separate the liquid container 610 from the container guide 611 and the second housing 200 .

The liquid container 610 can be completely pulled out of the container passage 220a and the container guide 611 so that the condensed water collected in the second container 610b of the liquid container 610 can be discharged and from a sink or other water source. Water or other liquid may be filled in the first barrel (610a) of the liquid container (610). When the liquid container 610 comes out, the condensed water collected in the second barrel 610b of the liquid container 610 may be discarded. The seal 615 can be separated from the opening 617 and the seal 615 can be closed so that liquid can be filled in the first canister 610a of the liquid container 610 or unused liquid can be discarded.

The additional fire emergency assembly 800 may extend from the rear end of the bottom surface of the second housing 200 . The fire emergency assembly 800 may include a fire detector 820 and a liquid or foam hose or nozzle 810 . The fire detector 820 may be a smoke detector, a gas detector (eg, a photoionization detector or PID), or a heat detector. Water, foam, or other extinguishing agent (eg, carbon dioxide, dry chemical, wet chemical, halogen or cleaning agent) when the amount of smoke or heat sensed by the fire detector 820 reaches a predetermined level or higher. , or dry powder) may be ejected below through the foam nozzle 810 . The foam nozzle 810 may be connected to an optional liquid basin or foam container provided inside the rear end of the second housing 200 .

The lighting assembly 700 may be located in the center of the lower surface of the second housing 200 . The lower surface of the second housing 200 may include a space or a slot into which the lighting assembly 700 can be inserted and fixed. The lighting assembly 700 may include a lighting 703 . In addition to this, the lighting assembly unit 700 may further include a proximity sensor 701 . The proximity sensor 701 may detect a distance of a user or other moving object from the kitchen hood 1 . This will be described in more detail with reference to FIGS. 25 to 26 .

The lighting 703 may be implemented as a printed circuit board (PCB) having a plurality of light emitting diodes 703a ( FIG. 26 ). Also, the light 703 may be automatically turned on to illuminate the surrounding area of the kitchen hood 1 or the cooking apparatus. Alternatively or additionally, the light 703 may be operated based on the proximity sensor 701 . For example, when the user approaches the kitchen hood 1 and the proximity sensor 701 detects that the user is within a predetermined distance range, the light 703 may be automatically turned on. The lighting 703 may include at least one ultraviolet light for sterilizing the cooking device, and may be configured to selectively use general lighting and sterilization lighting by the control unit.

The lighting assembly 700 may include a case or cover 704 . The bottom surface of the cover 704 may be transparent or translucent, or it may serve as a light diffuser, and a light 703 is placed on top of the bottom surface so that the light by the light 703 can exit through the bottom surface. oriented and positioned. Alternatively, the cover 704 may have an opening, through which the lights 703 may be exposed. A transparent, translucent, or diffusing lens may be positioned in the opening under the light 703 to protect the light 703 .

The rear end portion of the cover 704 may include a sensor mount 705 on which the proximity sensor 701 is located. The sensor mount 705 may be inclined, and the proximity sensor 701 may be disposed at an angle capable of detecting a user's approach in a horizontal direction. The sensor mount 705 may be transparent or translucent so that the proximity sensor 701 can send and receive signals. Alternatively, the proximity sensor 701 may be a radar sensor, and the sensor mount 705 may be opaque. In another alternative embodiment, the sensor mount 705 may include an opening through which the end of the proximity sensor 701 may be exposed, and an optional transparent cover may be positioned in the opening. The cover 704 may be coupled to a lower portion of the second housing 200 . Further details of the lighting assembly 700 will be described with reference to FIGS. 25 through 27 .

Referring to FIGS. 9 and 19 to 20 , the steam cleaning assembly 600 opens, partially opens, and closes the air intake path on the flow path through which air flows from the suction grill 210 to the fan 300. A damper 660 located on the right side may be included. During the air discharge operation, at least one of the dampers 660 is fully opened or It may be partially open. During the steam cleaning operation, the damper 660 isolates the steam inside the first housing 100 and the second housing 200 to provide a steam generator ( 670) may initially be closed to keep the steam dispensed from. The damper 660 may be opened later when the fan 300 is operated.

The damper 660 may be rotatably coupled to the outer walls 666 and 667 of the damper assembly 662 through the hinge structure 660a. The hinge 660a may be a shaft formed or coupled to the inner end of the damper 660 , and may rotate within a bracket defined by the front and rear lower ends of the outer walls 666 and 667 . Alternatively, the hinge 660a may be a hollow hinged knuckle that rotates about an axis or pin located at the lower end of the outer walls 666 and 667 . However, the coupling of the damper 660 to the damper assembly 662 may not be limited to the hinge structure.

Damper 660 may be coupled to a rack or gear 668, which may have a rounded arc shape (eg, a semicircle). The rack 668 may include teeth that engage with teeth located on the outer periphery of the gear 661 located inside the damper assembly 662 . The outer walls 666 and 667 may have openings into which the rack 668 is inserted. The gear 661 may be coupled to the damper driving motor to rotate automatically, and driving of the damper driving motor may be controlled by a controller. The steam cleaning assembly 600 may have left and right gears 661 located inside the left and right portions of the damper assembly 662, and each gear 661 includes a left gear and a right gear 661. may be coupled to its own damper drive motor to operate independently of each other. Damper assembly 662 can serve as a motor housing to protect the damper drive motor from steam and condensate, or a separate motor housing (e.g., formed by inner walls 664 and 665 shown in FIG. 15) may include

A passage or guide may be formed inside the liquid guide 663 at a position below the hinge 660a to collect condensate and other residues flowing down the damper 660 . For example, the liquid guide 663 may be formed to be slightly wider than the damper assembly 662 . For example, at least one slit or opening may be formed in the damper 660 at a position adjacent to the hinge so as to have a left and right length slightly longer than the left and right length of the damper assembly, and the left and right walls of the liquid guide 663 may be located more outside than the position of the slit in the damper 660 . The inner surfaces of the left and right walls of the liquid guide 663 may have an inner protrusion, an inclined surface, or a tunnel extending inward toward the center of the liquid guide 663, and the condensate falling through the slit of the damper 660 is You can be guided under these guides. The guides may extend and/or communicate with the second condensate passageway 663a and/or the guide 614a of the lid 614 . The upper surface of the damper 660 may be slightly inclined or curved toward the slit, which may also be referred to as a drain.

The kitchen hood 1 may illuminate in the direction of the cooking device from the lighting assembly 700 installed at the upper center of the cooking device. In addition, the kitchen hood 1 may measure a distance to a cooking tool placed on a lower cooking device. For example, by measuring the distance from the plurality of distance sensors 801 installed on the lower surface of the first housing 110 to the cooking utensils, the position where the cooking utensils are placed can be detected. Alternatively or in addition, the air quality (AQ) sensing assembly 500 may be formed on the left and/or right side of the first housing 100 . When the air quality sensing assembly 500 is formed on both the left and right sides, the air quality sensing assembly 500 may detect which side of the cookware is located on the stove by comparing the pollution levels on the left and right sides. Based on measurements from the lighting assembly 700 and/or air quality sensing assembly 500, the damper 660 closest to the cookware may be open or at least partially open, while furthest away from the cookware. The damper 660 may be closed or at least partially closed to increase the suction action closer to the cookware. The operation of the damper 660 may be binary (eg, fully open or completely closed) or the degree of opening/closing may be continuously adjusted based on the position of the cooking tool. In this embodiment, the damper 660 may be installed in the left and right air passages, respectively, and an embodiment using the left damper 660L and the right damper 660R will be described with reference to FIGS. 21A and 21B . will be.

The damper 660 may be opened and closed by rotation of the gear 661 , and the gear 661 may be operated by a damper driving motor. To open the damper 660 , the gear 661 can be rotated in a first direction and the rack 668 slides the damper 660 inward until the damper 660 is parallel to the outer walls 666 , 667 . It may be moved inward toward the center of the damper assembly 662 to rotate. To close the damper 660 , the gear 661 can be rotated in a second direction opposite to the first direction, and the rack 668 is curved so as to prevent further rotation of the damper 660 . The damper assembly 662 may be moved outwardly from the center of the damper assembly 662 to rotate the damper 660 outward until the outer end of the damper 660 contacts the portion 652 .

The first condensate passageway 662a may be positioned between the outer walls 666 and 667 of the damper assembly 662 and may be defined by the inner walls 664 and 665, or alternatively may be formed as a separate rectangular frame or pipe. However, the embodiments disclosed herein are not limited. The condensed water may fall through the first condensed water passage 662a so as not to interfere with the gear 661 . The bottom plate 655 of the condensate collector 650 may be seated on the upper rim of the damper assembly 662 . The first condensate passage 662a may be formed in the damper assembly 662 . Alternatively, the first condensate passageway 662a may be a tube formed in the bottom plate 655 and may be inserted into the upper opening of the damper assembly 662 to coincide with the second condensate passageway 663a.

21A and 21B , the gear 661 positioned on the left may be called a left gear 661L, and the gear 661 positioned on the right may be called a right gear 661R, and the left The damper 660 located at may be referred to as a left damper 660L, and the damper 660 located at the right may be referred to as a right damper 660R. The rack 668 coupled to the left damper 660L may be referred to as a left rack 668L, and the rack 668 coupled to the right damper 660R may be referred to as a right rack 668R.

Also, the outer wall 666 defining the left outer surface of the damper assembly 662 may be referred to as the left outer wall 666 , while the outer wall 667 defining the right outer surface of the damper assembly 662 . ) may be referred to as the right outer wall 667 . The curved portion 652 formed on the left inner surface of the second housing 200 may be referred to as a left curved portion 652L, and the curved portion 652 formed on the right inner surface of the second housing 200 is a right curved surface. may be referred to as portion 652R.

The left gear 661L and the right gear 661R may be spaced apart in the front-rear direction so as not to interfere with each other during operation. The left rack 668L may be inserted through the rear surface of the left outer wall 666 , and the right rack 668R may be inserted through the front surface of the right outer wall 667 . The left gear 661L and the right gear 661R may be controlled by the controller based on what is sensed by the lighting assembly 700 and/or the air quality sensing assembly 500 .

The left gear 661L may be rotated by a left shaft coupled to a left damper driving motor located at the rear end of the damper assembly 662 . Alternatively, the left shaft and the left damper driving motor may be located at the front end of the damper assembly 662 or may be coupled to the outside of the first condensate passage (662a). The left gear 661L may be located inside the left outer wall 666 . The left outer wall 666 may have an opening located on the rear end side so that the left rack 668L can be inserted. The left rack 668L may engage with the left gear 661L for rotating the left damper 660L.

Left gear 661L may rotate clockwise to open left damper 660L and may rotate left damper 666L towards left outer wall 666 . When the left damper 660L is in the fully open position, the left damper 660L may be parallel to the left outer wall 666 such that the inner surface of the left damper 660L faces the outer surface of the left outer wall 666 . The angle of the left damper 660L with respect to the hinge 660a (FIG. 19) is such that when the left damper 660L is fully open, the left damper 660L can contact the exterior surface of the left exterior wall 666. Also, a left suction passage may be formed between the left inner surfaces of the first and second housings 100 and 200 and between the centrally located steam cleaning assembly 600 .

The left gear 661L may be rotated counterclockwise to completely close the left damper 660L and may rotate the left damper 660L toward the left curved portion 652L. A lower portion of the left curved portion 652L may have a longer left and right length than an upper portion thereof. The left and right lengths of the left damper 660L are such that, when the left damper 660L is completely closed, the outer end of the left damper 660L can contact the lower part of the left curved portion 652L to close the left suction passage. can be configured. The front and rear lengths of the left damper 660L may be configured to extend between the front end and rear end inner surfaces of the second housing 200 to be closer to the left suction passage.

The right gear 661R may be rotated by a right shaft coupled to a right damper driving motor located at the rear end of the damper assembly 662 . The right axis may be longer than the left axis. Alternatively, the right shaft and the right damper driving motor may be located at the front end of the damper assembly 662 or may be coupled to the outside of the first condensate passage 662a. The right gear 661R may be located on the inside of the right outer wall 667 . The right outer wall 667 may have an opening located at the distal end into which the right rack 668R is inserted. The right rack 668R may be combined with a right gear 661R for rotating the right damper 660R.

The right gear 661R may be rotated counterclockwise to open the right damper 660R and may rotate the right damper 660R towards the right outer wall 667 . When the right damper 660R is in the fully open position, the right damper 660R is configured such that the inner surface of the right damper 660R is parallel to the right outer wall 667 such that the outer surface of the right outer wall 667 is facing. can be

The angle of the right damper 660R with respect to the hinge 660a (FIG. 19) is such that when the right damper 660R is fully open, the right damper 660R can contact the outer surface of the right outer wall 667. Also, a right suction passage may be formed between the right inner surfaces of the first and second housings 100 and 200 and between the centrally located steam cleaning assembly 600 .

The right gear 661R may be rotated clockwise to close the right damper 660R and may rotate the right damper 660R toward the right curved portion 652L. The lower portion of the right curved portion 652L may have a left and right length that is longer than a left and right length of the upper portion.

The left and right lengths of the right damper 660R are such that, when the right damper 660R is completely closed, the outer end of the right damper 660R closes the right suction passage so as to contact the lower portion of the right curved portion 652L. can be configured. The front and rear lengths of the right damper 660R may be configured to extend closer to the right suction passage between the front end and rear end inner surfaces of the second housing 200 .

The suction grill 210 located on the left side of the second housing 200 may be referred to as a left suction grill 210L, and the suction grill 210 located on the right side of the second housing 200 is a right suction grill. (210R).

There may be a groove or an inner space 652a formed between the outside and the inside of each of the left curved portion 652L and the right curved portion 652R. The groove 652a may communicate with the openings 210a formed on the left and right surfaces of the second housing 200 .

The upper portion of the left suction grill 210L may be inserted into the groove 652a of the left curved portion 652L between the inside and the outside of the left curved portion 652L. The upper portion of the right suction grill 210R may be inserted into the groove 652a of the right curved portion 652R between the inside and the outside of the right curved portion 652R.

The upper portion of the left suction grill 210L may be fixed to the groove 652a of the left curved portion 652L through selective magnetic coupling. For example, the left curved portion 652L may be formed of a ferromagnetic material, and the upper portion of the left suction grill 210L may include at least one magnet configured to be magnetically attracted to the left curved portion 652L. there is.

Similarly, the upper portion of the right suction grill 210R may be fixed to the groove 652a of the right curved portion 652R through selective magnetic coupling. For example, the right curved portion 652R may be formed of a ferromagnetic material, and the upper portion of the right suction grill 210R may include at least one magnet configured to be magnetically attracted to the right curved portion 652R. there is.

The plurality of distance sensors 801 may detect left and right positions of cooking tools placed on the cooking apparatus. The plurality of distance sensors 801 detect the distance from the cooking utensils placed on the heat generating unit 805 (cooker, induction, stove, etc.) of the cooking apparatus located below the second housing 200, and the cooking utensils are present. position can be detected. To this end, the distance sensor 801 may be installed on the lower surface of the first housing 100 at positions and numbers corresponding to the positions and numbers of the heat generating units 805 of the cooking apparatus (FIG. 30). Preferably, the distance sensor 801 and the heat generator 805 may be installed to correspond one-to-one. Alternatively, the distance sensor 801 may be installed on the lower surface of the second housing 200 .

If the cookware is on the left side, the corresponding left damper 660L may be fully open and the right damper 660R may be completely closed. When the cookware is on the right side, the corresponding right damper 660R may be fully open and the left damper 660L may be completely closed. When the cookware is on the left and right, both the left damper 660L and the right damper 660R corresponding thereto may be fully open or partially open.

The opening degree of the right damper 660R and the left damper 660L may be continuously adjusted according to the position of the cooking tool. As the cooking tool is closer to the right damper 660R, the right damper 660R may be more open. As the cooking tool is closer to the left damper 660L, the left damper 660L may be more open.

As the cooking tool moves away from the right damper 660R, the right damper 660R may be more closed. As the cooking tool moves away from the left damper 660L, the left damper 660L may be more closed. When the cookware is in the lower center of the kitchen hood 1 , the right damper 660R and the left damper 660L may each be half open, or otherwise fully open.

Alternatively, the opening and closing of the right damper 660R and the left damper 660L may be operated based on a difference in temperature respectively measured by the plurality of temperature sensors 802 . The first temperature measured by the first temperature sensor 802a installed on the top of the kitchen hood 1 and the second and third temperature sensors 802b and 802c installed on the left and right sides of the kitchen hood 1, respectively. The rotational speed of the fan 300 and/or the opening degree of the left and right dampers 660L and 660R may be determined according to the difference from the second and third temperatures. The amount of air may be determined according to the rotation speed of the fan 300 and/or the degree of opening of the left and right dampers 660L and 660R.

Referring to FIGS. 22 to 26 , the lighting assembly 700 and the steam cleaning assembly 600 are a second housing so that the lighting assembly 700 and the steam cleaning assembly 600 are raised and lowered according to the elevation of the second housing 200 . (200) may be coupled.

The fan 300 and the fan housing 310 may be fixed to the first housing upper frame 140 (eg, the second upper frame 142) so as to remain in a fixed position on the first housing 100 . . When the second housing 200 is vertically descended, the distance from the suction grill 210 to the opening 141a formed in the first upper frame 141 can be increased, so the length of the left and right suction paths can be increased. can

The air quality sensing assembly 500 may be located in a lower portion of the left side of the inner housing 120 behind the door 111 . The left side of the inner housing 120 may have an inner space formed between the outer wall 121 and the inner wall 122 of the inner housing 120 . The air quality sensing assembly 500 may be surrounded in the inner space of the inner housing 120 .

Alternatively, the air quality sensing assembly 500 may be located in the lower part of the right side of the inner housing 120, and the right side of the inner housing 120 is the air quality sensing assembly 500 located in the inner housing 120 of the It may have an inner space formed between the outer wall 121 and the inner wall 122 . An additional second air quality sensing assembly 500 may be additionally positioned so that air quality is sensed from both the left and right sides of the kitchen hood 1 .

A first molecular channel path 510a having a plurality of openings may be formed in the outer wall 121 . The first molecular channel path 510a may be formed with a plurality of through holes penetrating the outer wall 121 .

Alternatively, the first molecular pathway 510a may be formed as a separate disk having a plurality of through holes, and the disk may be inserted into a corresponding opening or space formed in the outer wall 121 .

The air quality sensor assembly 500 may include a plurality of air quality sensors. The figure shows three air quality sensors 520a, 520b, and 520c as an example. However, the present disclosure is not limited thereto. The plurality of air quality sensors 520a, 520b, and 520c may be installed in the first housing 100 . For example, when installed in the inner housing 120 of the first housing 100 , an opening 111d may be formed in the outer housing 110 corresponding to these sensors so that air is ventilated. As another example, if the air quality sensors 520a , 520b , and 520c are installed in the outer housing 110 , the opening 111d does not need to be formed.

The first sensor 520a may protrude from the inner wall 122 to be aligned with the first molecular pathway 510a. The air quality sensing assembly 500 may include a plurality of air quality sensors and corresponding molecular pathways. As illustrated in FIGS. 21A, 21B, and 23 , first, second, and third sensors 520a, 520b, 520c aligned with the first, second, and third molecular pathway pathways 510a, 510b, and 510c ), but embodiments disclosed herein are not limited to three sensors.

The first to third sensors 520a, 520b, and 520c may be arranged in a horizontal direction or a vertical direction, respectively, at positions aligned with the rear of the first, second, and third molecular pathway pathways 510a, 510b, and 510c. can be provided. At this time, air containing dust, oil, gases, and other foreign substances may be detected by the first to third sensors 520a, 520b, and 520c through the first to third molecular path passages 510a, 510b, and 510c, respectively. there is. The first to third sensors 520a, 520b, and 520c may be a photoionization detector (PID), a particle sensor, or other sensors configured to detect a gas or a harmful substance.

The first to third sensors 520a, 520b, and 520c may be positioned on a printed circuit board (PCB) 530 positioned on the inner wall 122 . The printed circuit board 530 may include a communication module (not shown) that is electrically connected to the control unit and/or communicates with the control unit. Accordingly, the air quality measurement values respectively measured by the first, second, and/or third sensors 520a, 520b, and 520c may be transmitted to the controller. The communication module may include an optional Bluetooth or Wi-Fi module to transmit data to a remote device such as a smart phone or a mobile or web application.

As another alternative example, the cooking device, external air purifier, or other smart device may receive information from the air quality sensing assembly 500 and/or send air quality measurements or other data or information to the communication module of the air quality sensing assembly 500 . may be configured to transmit.

As an example, the first sensor 520a may be configured to sense an amount or density (eg, parts per million or PPM) of a gas, such as carbon dioxide (CO ₂ ). Large amounts or high densities of carbon dioxide (CO ₂ ) may indicate high levels of smoke or other carcinogens. However, embodiments disclosed herein are not limited to carbon dioxide (CO ₂ ).

Alternatively or additionally, the first sensor 520a may include carbon monoxide (CO), carbon dioxide (CO ₂ ), nitrogen dioxide (NiO ₂ ), formaldehyde (CH ₂ O or HCHO), volatile organic compounds (VOCs), black carbon ( BC) or soot, and/or the amount or density of polycyclic aromatic hydrocarbons (PAHs).

The second sensor 520b may be configured to sense an amount or density of oil, oil mist, dust, or other dirt or grime. The third sensor 520c may be configured to detect an odor or an amount or density of an odor.

The outer case 110 and/or the door 111 may have optional slits or openings so as not to interfere with the first to third molecular pathways 510a, 510b, and 510c. Alternatively, there may be a gap between the door 111 and the inner housing 120 to allow smoke and gas to enter the first to third molecular pathways 510a, 510b, and 510c.

The operation of the fan 300 may be automatically controlled based on the sensed by the first to third sensors 520a, 520b, and 520c. The control unit may have a memory for storing the air quality measurement values measured by the predetermined 1-3 sensors 520a, 520b, and 520c. When the measured value (quantity or density) sensed by at least one of the first, second, and third sensors 520a, 520b, and 520c is greater than or equal to the first, second, and third predetermined reference values, respectively , the fan 300 may be turned on, or the speed of the fan 300 may be increased by a predetermined amount of the fan speed.

Alternatively or in addition to this, the speed of the fan 300 may be controlled in response to the air quality measurements sensed by the 1-3 sensors 520a, 520b, and 520c. As another alternative example, the air quality measurements of the first, second, and third sensors 520a, 520b, 520c may be added to calculate the total pollution level, and the speed of the fan 300 may be calculated It can be controlled in proportion to the total pollution level or based on a comparison of the calculated total pollution level with a predetermined pollution level stored in the memory. When the speed of the fan 300 increases in response to being sensed by the first, second and third sensors 520a, 520b, 520c, the fan 300 may be considered to perform an air purification operation. .

The second housing 200 may be raised or lowered to optimize air flow based on sensing by the first, second, and third sensors 520a, 520b, 520c. For example, after cooking is completed and there is no cooking tool, the second housing 200 may be lowered. In addition, the fan 300 may operate at a predetermined speed, for example, a maximum speed to reduce residual contaminants. Alternatively, if other undesirable substances are detected in the kitchen (eg during microwave cooking or roasting), the second housing 200 may be lowered by a predetermined amount (eg a maximum amount) or the pan 300 may be operated at a predetermined speed (eg, maximum speed) to exhaust contaminants, including contaminants, from devices in the kitchen and/or to improve air quality in the home.

The steam cleaning operation may be started or operated based on sensing by the first, second, and third sensors 520a , 520b , and 520c and/or based on the current operation of the fan 300 . For example, after the fan 300 is turned off after an air purification operation or after a certain level of contamination has been reduced to indicate the end of cooking, the controller can control the steam cleaning to remove any residual gas, dust, and dirt remaining inside the kitchen hood 1 . You can decide it's good for removing oils, odors, etc. The display 130 may inform the user to fill the liquid container 610, or alternatively, if the liquid container 610 is pre-filled, the steam cleaning operation may be performed automatically. A more detailed description of the steam cleaning operation will be described below with reference to FIGS. 26 and 27 .

Referring to FIG. 25 , the display 130 may be located at a lower portion of the front panel of the outer housing 110 . Alternatively or in addition, there may be a second and/or third display on the door 111 and/or on the side of the outer housing 110 opposite the door 111 .

The outer housing 110 may include a plurality of openings or through-holes 133 defined by the surface or by laser machining, printing or etching, for example. The through-holes 133 may be formed in various arrangements to represent numbers, letters, or images.

The printed circuit board 131 may be positioned behind the front panel of the outer housing 110 in alignment with the through hole 133 . The printed circuit board 131 may include a plurality of LEDs (LEDs) so that light is irradiated through the through hole 133 .

The through hole 133 may be divided into parts defining separate notifications. The number of LEDs 132 and the number of notifications defined by the through-holes 133 may be the same, and the LEDs 132 may be positioned to align with the notifications defined by the through-holes 133 .

The control unit may determine which LED 132 should be lit based on the notification to be irradiated to the user, and the light from the LED 132 may be transmitted through a through hole 133 defining the corresponding notification. .

The notifications defined by the through-holes 133 include when the fan 300 is turned on, when the fan 300 is operating during an air purifying operation, and when the amount or density sensed by the air quality sensing assembly 500 is predetermined. above or below the amount or density, when the steam cleaning assembly 600 operates, when the liquid container 610 is filled with liquid, when the lights are turned on, or other motion or air quality sensing assembly 500, lighting Information such as sensed by the assembly 700 , the fire emergency assembly 800 , or some other additional sensor may be communicated to the user.

In addition, the through hole 133 determines whether air is sucked in and discharged through the suction port of which side by opening and closing the left damper 660L or the right damper 660R, that is, whether the air intake is left suction or right suction, and operation Information such as whether the mode is manual operation or operation of a set smart function, or whether the second housing 200 is suctioned in a lowered state, such as proximity suction, may be transmitted to the user.

Additionally, the LED 132 emits light of various visible wavelengths to convey the completion of a process (eg, a steam cleaning operation or an air purification operation) or a wide range of values sensed by the air quality sensing assembly 500 . can be configured to provide.

For example, the plurality of through-holes 133 may define a first notification, a second notification, and a third notification. The LED 132 located behind the first notification emits a red light when the amount and density of carbon dioxide sensed by the first sensor 520a are greater than or equal to the first predetermined amount, and the detected amount of carbon dioxide is predetermined It may be configured to emit yellow or orange light when less than the first amount but greater than a second predetermined amount, and emit blue or white light when the sensed amount of carbon dioxide is less than or equal to the second predetermined amount.

As another example, between a purple or blue light (eg 400 nm) and a red light (eg 700 nm) based on a sensed increase in carbon dioxide by the first sensor 520a between a set second amount and a set first amount. The wavelength of the light emitted by the LED 132 may be increased.

Alternatively or in addition, the display 130 may include a speaker that emits a warning sound when the sensed amount of carbon dioxide sensed by the first sensor 520a is greater than or equal to the first predetermined amount. Execution of the LED 132 after the second notification may similarly be based on that sensed by the second sensor 520b, and the execution of the LED 132 after the third notification is triggered by the third sensor 520c. It can be similarly based on what is sensed by

Display 130 adjusts and/or turns on and off the speed of fan 300 to control lighting 703 on and off, steam generator 612 on and off to control steam cleaning, and air purification. A touch sensor assembly may be included to allow the user to input instructions such as turning off and/or lifting the second housing 200 .

The touch sensor assembly may use capacitive touch sensing technology to allow the user to touch the notification formed by the through hole 133 to enter an instruction. This touch sensor assembly may be located on the printed circuit board 131 near the LED 132 . The printed circuit board 131 may include a communication module (eg, Wi-Fi or Bluetooth module) so that a user can wirelessly input an instruction through a mobile or web application or a remote device. Alternatively, a microphone may be used to control various operations by means of sound instructions.

23 to 24F , the display 130 may have various implementations. For example, instead of or in addition to using different colored lights to indicate the level of carbon dioxide, oil/dust, and/or odor, the notification may have a plurality of through-holes 133 arranged in rows and columns. Also, the number of lights turned on may indicate the corresponding level.

23 and 24A, the through-holes 133 may be arranged to form a long rectangle (eg, 3 rows, 5-15 columns) in the left-right direction, and the first, second, and A plurality of columns are lit to have a correlation with the level of carbon dioxide, oil/dust, and/or odor sensed by the third sensors 520a, 520b, and 520c (or a plurality of columns defined by 3rd row and 5th column) Block) As shown in FIG. 23 , the through-holes 133 may be arranged to form a long rectangle (eg, 5 rows, 5-12 columns) in the vertical direction.

In addition, a plurality of rows are illuminated (or three or Multiple blocks defined by 5 columns in a set of more rows).

24B and 24D, the through-holes 133 may be arranged in a straight horizontal line (FIG. 24A) or a circular, semi-circular, or arc-shaped (FIG. 24E), and a plurality of lit through-holes 133 ) may be correlated to the levels of carbon dioxide, oil/dust, and/or odor sensed by the first, second, and third sensors 520a, 520b, 520c.

Similarly, the speed of the fan 300 may be indicated by a plurality of illuminated through-holes 133 . 23 and 24A, the through-holes 133 may be arranged in concentric circles (each including at least a dozen through-holes 133) around a button that allows the user to turn the fan 300 on and off. can Alternatively, there may be horizontal or horizontal rows to the left and right of the button, as shown in FIGS. 24B and 24C . The number of concentric circles, the color of the light turned on, or the number of through-holes 133 may correspond to the speed of the fan 300 .

This configuration of the touch button surrounded by the through hole 133 is a light 703 (eg, the button can turn the light 703 on and off, and the through hole 133 can display the current brightness) ), may wish to turn off the air quality sensing assembly 500 itself (eg, a user may temporarily turn off all sensors 520a to 520c), and to manually control the kitchen hood 1 Alternatively, the height of the second housing 200 (for example, by touching the lift button, the second housing 200 may be raised and/or lowered, and the through hole 133 is the current height. can be indicated).

As shown as another alternative embodiment in FIG. 24E , there may be no button to turn the fan 300 on and off, instead, radial lines (e.g. For example, 6 through-holes), and the number of radial lines or the number of through-holes may indicate the speed of the fan 300 .

As another alternative embodiment, the operating state may be displayed in FIG. 24F . For example, steam cleaning indicating that steam cleaning is in progress, left suction indicating that air is being sucked through the left suction port by opening the left damper 660L, and opening the right damper 660R indicating that air is being sucked through the right suction port Right suction, smart operation indicating that a preset smart operation is being performed, and proximity suction indicating that the second housing 200 is lowered to the lowest position to be suctioned may be displayed. Such display information is an example, and of course, other information, such as whether the liquid container is replaced and/or detached, and liquid level information, may be selectively displayed.

Those skilled in the art should appreciate that the configuration of the through hole 133, notifications, and other optional buttons and switches is not limited. Additionally, display 130 or other surface of outer housing 110 may include switches (eg, to turn lights 703 and/or fan 300 on and off), dials (eg, brightness, speed, It may include a continuously adjustable level of height), a touch screen, a speaker, and the like.

The lower portion of the second housing 200 may include a groove or space into which the upper portion of the cover 704 of the lighting assembly 700 is inserted. The cover 704 may be press-fitted into the space through additional grooves or ribs, and may be further fixed through bolts, screws, or the like. The coupling of the cover 704 is not limited. For example, the cover 704 may be magnetically fixed to the bottom surface of the second housing 200 to facilitate removal for cleaning or repair.

The cover 704 can be completely inserted into the groove or space so that the bottom surface of the cover 704 is flush with the bottom surface of the second housing 200 or alternatively, the bottom surface of the cover 704 is the second housing 200 ) can protrude downward from the bottom of the

The cover 704 may be formed of a transparent or translucent material (eg, plastic) so as not to interfere with electromagnetic radiation emitted from the proximity sensor 701 and the light 703 .

Alternatively, the bottom of the cover 704 under the sensor mount 705 and lights 703 may be transparent, while the rest (eg, sides) of the cover 704 may be opaque. In the embodiments disclosed herein, the material forming the cover 704 as long as the light 703 can illuminate the cooking device under the kitchen hood 1 and the proximity sensor 701 can send and receive signals without obstruction. is not limited to

Two or more (eg, left and right) proximity sensors 701 may be adjacent to each other on sensor mount 705 . The left proximity sensor 701 may be on the left portion of the sensor mount 705 and the right proximity sensor 701 may be on the right portion of the sensor mount 705 .

Each individual proximity sensor 701 may be configured to detect a user approaching the kitchen hood 1 in the left and right directions in addition to the front and rear directions. Alternatively or additionally, the user's left and right positions with respect to the kitchen hood 1 may be determined by comparing data between the left and right proximity sensors 701 .

The sensor mount 705 may be inclined downward from the rear to the front so as to protrude from the bottom surface of the second housing 200 . The proximity sensor 701 may be positioned within the sensor mount 705 to be disposed along an inclination of the sensor mount 705 . The proximity sensor 701 may transmit a signal obliquely to detect a user or other moving object approaching the proximity sensor 701 in a horizontal or front-rear direction.

Alternatively, the sensor mount 705 may be a separate rectangular frame that protrudes or hangs below the rest of the cover 704 so that it does not tilt, and the proximity sensor 701 may be horizontally or front-to-back to the proximity sensor 701. It may be oriented horizontally along a fore-and-aft direction (and not at an angle) to detect an approaching user or other moving object.

The control of the driving assembly 450 and optionally the fan 300 may be performed in various ways so that the air cleaning or purifying function of the kitchen hood 1 is customized according to the type of cooking and the type of cooking utensils performed by the user. . As an example, the controller may store the stored distance in the memory 915 . The distance stored in the memory 915 may be the distance from the lower portion of the first housing 100 to the cooking device or other surface under the kitchen hood 1, which remains in a fixed position. Alternatively, the stored distance may be the distance from the bottom surface of the second housing 200 to the cooking device when the second housing 200 is inserted into the interior of the first housing 100 by the maximum amount so that the second housing 200 is raised by the maximum amount. The stored distance may be calculated based on an initial detection by the distance sensor 801 and a known or sensed distance of the second housing 200 with respect to the first housing 100 . The height of the second housing 200 with respect to the first housing 100 may be sensed by an additional sensor in the driving assembly 450 of the sliding assembly 400, or the lifting motor 453 of the driving assembly 450 ) can be calculated based on the operation of Alternatively, the stored distance may be manually measured and entered by the user.

When the distance is sensed by the distance sensor 801 , the controller may convert the sensed distance into a corrected or calculated distance based on the height of the second housing 200 with respect to the first housing 100 . When the second housing 200 is inserted into the first housing 100 by the maximum amount, the corrected distance may be the same as the detected distance.

The controller may determine the distance to the cooking utensils located on the top of the stove by comparing the corrected distance to the stored distance. When the modified distance equals the stored distance, the controller may determine that there are no cookware on the stove, and may instead drive the fan 300 and optionally primary to the sensed provided by the air quality sensing assembly 500 . It is possible to operate the driving assembly 450 based on the

When the distance to the cookware is less than or equal to the first predetermined distance, the second housing 200 may be slid to the outside of the first housing 100 to the first predetermined position. Alternatively, the second housing 200 may be slid to a position that is a predetermined first distance away from the cooking utensil. The first predetermined distance may correspond, for example, to an average height (eg, 5 cm) of the frying pan. For example, the predetermined first position may be a relatively low position, or may indicate a position inserted into the first housing 100 at a minimum distance such that the second housing 200 is lowered by a maximum amount.

When the distance to the cookware is less than or equal to the second predetermined distance higher than the first predetermined distance, the second housing 200 may be slid to the outside of the first housing 100 to the second predetermined position. . Alternatively, the second housing 200 may be slid to the second predetermined position when it is determined that the distance to the cooking utensils is greater than or equal to the second predetermined distance but smaller than the third predetermined distance. The second predetermined distance may be a height (eg, 12 cm) indicating an average or medium-sized saucepan or pot, and the second predetermined position is the second housing 200 to the outside of the first housing 100 . It may correspond to a half-slid position, but embodiments disclosed herein are not limited thereto. As another alternative embodiment, when the distance to the cookware is determined to be between the first predetermined distance and the third predetermined distance, the height of the second housing 200 is a second predetermined distance away from the cookware. It can be adjusted to be

When the distance to the cooking tool is greater than or equal to the third predetermined distance, the second housing 200 may slide to the outside of the first housing 100 to the third predetermined position. Alternatively, the second housing 200 may be slid to a position that is a predetermined third position away from the cookware. The predetermined third position may correspond to, for example, the height of a large saucepan or pot (eg, 15 to 18 cm).

The embodiments disclosed herein are not limited to the stored three predetermined distances. For example, there may be a fourth predetermined distance greater than the first predetermined distance and less than the second predetermined distance, which may be equal to a small pot size (eg 8-10 cm). The fourth predetermined distance may correspond to a fourth predetermined position between the first and second predetermined positions. The implementation of the control of the drive assembly 450 based on what is sensed by the lighting assembly 700 is not limited thereto. As an alternative embodiment, the lighting assembly 700 may sense the surface area or radius of the cookware instead of the height and may control the drive assembly 450 accordingly.

When the control unit determines that there are no cooking tools in the cooking apparatus, the second housing 200 may be raised to be inserted into the first housing 100 by a maximum amount in order to maintain a smooth appearance in the kitchen. This position may be referred to as the initial position.

Alternatively, the control view may not raise the second housing 200 until a certain value detected by the air quality sensing assembly 500 is at or below a predetermined level. For example, if there is no cooking tool in the cooking apparatus, but it is determined that the level of at least one of carbon dioxide, oil and dust, or odor is at or above the corresponding predetermined level, the second housing 200 is not raised or otherwise Further lowered, alternatively or in addition to this, the speed of the fan 300 may be changed (ie, increased or decreased) based on the sensed by the first to third sensors 520a, 520b, and 520c.

When all levels of carbon dioxide, oil or dust, or odors are below a corresponding predetermined level, the second housing 200 may be raised to be inserted by a maximum amount into the first housing 100 , and alternatively or otherwise In addition, the fan 300 may be turned off or the speed of the fan 300 may be reduced.

Alternatively or in addition, there may be an optional timer to sense how long the cookware has been removed from the stove. The second housing 200 prevents movement of the second housing 200 during minor intermediate cooking steps, such as emptying cookware, refilling cookware, or other steps that may require temporarily removing and adjusting cookware. It may not rise until a predetermined period of non-cooking or longer has elapsed.

As an alternative simpler implementation of the height adjustment of the second housing 200 , the height of the second housing 200 maintains a predetermined ground distance between the distance sensor 801 and the cookware detected below the distance sensor 801 . can be adjusted to In this embodiment, when a predetermined time elapses or when the value detected by the air quality sensing assembly 500 is equal to or less than a predetermined level, the second housing 200 moves to the first housing 100 by a maximum amount. It can be raised to be inserted.

The height of the second housing 200 may be further adjusted based on a value sensed by the air quality sensing assembly 500 . For example, the controller may correct the values of the first, second, and third positions or distances that are predetermined based on the levels or measured values sensed by the 1-3 sensors 520a, 520b, and 520c. The first, second, and third predetermined positions may be modified to be lower when the level sensed by the air quality sensing assembly 500 is higher, and the first, second, and third predetermined positions are When the level sensed by the air quality sensing assembly 500 is lower, it may be corrected to be higher.

In another embodiment, the control unit may move the second housing 200 to a predetermined second position (unmodified), and then, based on a value sensed by the air quality sensing assembly 500, by a predetermined adjustment amount. 2 The housing 200 can be raised and lowered.

In this embodiment, when the medium-sized sauce pan is positioned on the cooking apparatus, the second housing 200 may be slid to a predetermined second position. When water is being boiled in a medium-sized source pan, the levels or measured values of carbon dioxide, oil, dust, or odors detected by the 1-3 sensors 520a, 520b, and 520c, respectively, may be relatively low.

In this case, the second housing 200 may remain in the second position, or alternatively may be raised by a predetermined cleaning adjustment amount, which may be a fixed predetermined amount (eg 4 inches), or alternatively based on measured levels of carbon dioxide, oil and dust, and odors.

When a medium-sized saucepan is used as a deep fryer or when cooking flavored sauce, carbon monoxide, carbon dioxide, VOCs, methane gas detected by the first to third sensors 520a, 520b, and 520c, respectively , oil or dust, or odor levels or measurements may be relatively high.

In this case, the second housing 200 may be lowered by a predetermined soiling adjustment amount, which is a fixed predetermined amount (eg 4 inches), or alternatively carbon monoxide, carbon dioxide, VOCs, methane gas, oil and dust. , and can be calculated based on the perceived level of the odor.

In the case of a low-height frying pan, the control can be raised primarily based on cleaner air. When the frying pan is positioned on the cooking device, the second housing 200 may be slid to a predetermined first position, which may be the lowest position to which the second housing 200 may be slid. When the frying pan is used to fry ingredients with oil, the second housing 200 may be left in the first predetermined position (or, if the second housing 200 can be lowered further, the second housing 200 is , alternatively, may be lowered by a predetermined dirt control amount). Instead, if the frying pan is used for boiling or steaming a small amount of food, or if it produces relatively little smoke or odor (eg used to roast sesame seeds to golden brown), the second housing 200 may be It can be increased by the amount of cleaning adjustment.

The fan 300 may be left on for at least 30 minutes after cooking is finished, which may be determined based on detection that there is no cooking tool by the air quality sensing assembly 500 or the distance sensor 801 . Continued exhaust after cooking shows a decrease in the amount of fine dust in the kitchen. The fan 300 may remain on for two hours or based on a setting selected by the user. Prior to cooking, the user may manually turn on the fan 300 , or alternatively, via the proximity sensor 701 , the lighting assembly 700 may detect a user approaching the kitchen hood 1 and The fan 300 may be automatically turned on.

The position of the second housing 200 or the speed of the fan 300 may be manually controlled by a user's instruction, or may be based on the start of a steam cleaning operation. Periodically (eg, every month or every three months), or alternatively, cooking frequency, air quality measurements by air quality sensing assembly 500 , or additional information on the interior of first or second housing 100 , 200 . Based on detection by the residue detector, the display 130 may provide a notification to the user suggesting to initiate a steam cleaning operation. The provision of this notice may be the first step (ie step 1) in the steam cleaning operation.

Looking at the notification on the display 130 , the user can input an instruction to start steam cleaning. The display 130 may receive a user instruction in the second step (step 2). After receiving the user's instruction in the second step, the fan 300 may be turned off and the second housing 200 may be turned off by a maximum amount or by an amount allowing access to the liquid container 610 in the third step (step 3). can be lowered

After the second housing 200 is lowered in step 3, the display 130 may issue a notification instructing the user to fill the liquid container 610 with liquid in the fourth step (step 4). After confirming the notification, the user may take out the liquid container 610 from the container guide 611 and fill the first container 610a with liquid.

The liquid container 610 may be located at a convenient location for separation because the second housing 200 is lowered. After filling the liquid, the user can insert the liquid container 610 back into the container guide (611). In the fifth step (step 5), the sensor may detect the water level in the liquid container 610 . When it is sensed that the liquid container 610 is at or above a predetermined water level in step 5, the second housing 200 may be raised by a maximum amount or the second housing 200 may be moved to the second housing 200 in the sixth step (step 6). 1 It may be inside the housing 100 . After the second housing 200 is raised, the damper 660 may be closed to prevent leakage of condensed water in the seventh step (step 7). After the damper 660 is closed, in an eighth step (step 8), the steam generator 612 may be turned on.

The steam generator 612 may be operated for a predetermined steam generation time in the ninth step (step 9). After a predetermined steam generation time has elapsed, the steam generator 612 may be turned off in a tenth step (step 10). The steam generator 612 and the fan 300 may be left turned off for a predetermined collection time in the eleventh step (step 11).

During step 11, condensed water may continue to be collected in the second barrel 610b of the liquid container 610 before the fan 300 is turned on. After a predetermined collection time has elapsed, the fan 300 may be turned on to discharge the steam and residues to the outside in a twelfth step (step 12), and the damper 660 may optionally be opened.

The fan 300 may be left turned on for a predetermined discharge time in a thirteenth step (step 13). When the predetermined discharge time elapses, the fan 300 may be turned off in a fourteenth step (step 14).

After the fan 300 is turned off, the display 130 may provide a notification instructing the user to empty the liquid container 610 and the damper 660 may be closed in a fifteenth step if it has been selectively opened. (Step 15)

In another embodiment, the fan 300 may be set to operate for a set time or 24 hours. As described above, the rotation speed of the fan 300 may be determined and the air volume may be determined according to the air quality measurement value measured by the air quality sensor, and may be set to operate in a set cycle or 24-hour operation mode. This operation mode may be for operating in an air cleaning mode. It may be set to automatically operate when the air quality condition or degree is greater than or equal to a preset reference value, or the fan 300 may continue to operate even when the air quality is less than or equal to the reference value.

Seeing the notification, the user may input an instruction to lower the second housing 200 so that the collected condensate can be disposed of. Upon receiving an instruction in step 16 (step 16), the second housing 200 may descend. The user may separate the liquid container 610 , discard the collected condensed water, and insert the liquid container 610 back into the second housing 200 .

Upon detecting the empty liquid container 610 (or a water level lower than a predetermined water level), the second housing 200 may automatically rise in the seventeenth step (step 17). After step 17, the user may input an instruction to the display 130 to set the kitchen hood 1 so that the air quality sensing assembly 500 returns to the air cleaning mode in which the air quality sensing assembly 500 constantly or periodically detects the air quality in the kitchen. can

The height of the fan 300 and/or the second housing 200 may be automatically controlled based on values sensed by the air quality sensing assembly 500 to maintain acceptable air quality in the kitchen.

The embodiments disclosed herein are not limited to the sequence of the above steps as long as the fan 300 is turned off before steam is generated by the steam generator 612 . For example, in step 3, the fan 300 may be turned on as the second housing 200 is lowered, and may not be turned off until step 4, step 5, step 6, or step 7. Similarly, damper 660 can be closed in any one of step 3, step 4, step 5, step 6, or step 7.

In step 14 or after step 15, 16, 17, as sensed by the air quality sensing assembly 500, the fan 300 may be left on or turned on to continue evacuating contaminated air in the kitchen. Alternatively, the rotational speed may be adjusted based on the sensed by the air quality sensing assembly 500 . In an arrangement of these steps, the damper 660 may remain open or closed.

If, after step 14, the fan 300 is maintained in the on state, the fan 300 receives a request to separate the liquid container 610 to discard the collected condensate through an instruction input to the display 130. May be turned off when indicated by the user.

The user may want the steam cleaning to occur at night. As opposed to the process described above, seeing the notification in step 1, the user can enter an instruction on the display to program the steam cleaning to start later.

The user may separate the liquid container 610 to fill the liquid container 610 with water, but if the second housing 200 rises in step 6 after sensing a predetermined water level, step 7 and/or step 8 can be delayed up to a pre-programmed time. In the meantime, according to a need and manual instruction based on that sensed by the air quality sensing assembly 500, the fan 300 may continue to operate to exhaust contaminants from the kitchen, and the damper 660 will remain open. can be as The user may pre-fill the liquid container 610 and perform pre-programmed steam cleaning at any time or periodically.

As another example, the user may decide to pre-fill the liquid container 610 before receiving a notification recommending a steam cleaning process. The user may enter instructions to guide the steam cleaning to occur automatically based on the cooking frequency, the estimated level of dust or residue inside of the second housing 200, or alternatively the display 130 will prompt the user to steam It can be based on when cleaning is recommended.

In this configuration, steps 1-6 may be omitted, and in step 7, the fan 300 may be turned off after the damper 660 is closed. The user can pre-fill the liquid container after step 16. As the user discards the condensed water collected from the second container 610b, the user can, at that time, fill the first container 610a, and the user can later use the liquid container 610 for the next steam cleaning. may not need to be filled.

Steps 5 and 6 may alternatively be based on the sensed weight or sensed weight of the liquid container 610 inserted into the container guide 611 . As another alternative example, the user may input an instruction on the display 130 to instruct the second housing 200 to rise after inhaling the liquid container 610 .

Steps 7 and 8 may alternatively be started based on a user instruction input to the display 130 instead of automatically after the second housing 200 is raised.

In step 15, instead of notifying the user that steam cleaning is complete, as an alternative, the liquid container 610 may be lowered automatically to indicate to the user that it may be removed for disposal of the collected condensate.

In step 17, instead of automatically raising the second housing 200 according to the detection of the empty liquid container 610, the user may give a command to the display 130 to instruct the second housing 200 to rise. .

Instead of operating based on a predetermined steam time, collection time, and discharge time, steps 9 to 15 are alternatively performed in the second condensate container to prevent overflow of the collected condensate water in the second condensate container 610b. may be based on the sensed water level in 610b.

For example, in step 9, the steam generator 612 may be operated until the first water level is sensed in the second barrel 610b. Once the first water level is reached, the steam generator 612 may be turned off in step 10 .

The steam generator 612 and the fan 300 may be turned off in step 11 until a second water level higher than the first water level is detected in the second barrel 610b. According to the detection of the second water level, the fan 300 may be turned on in step 12 .

After step 4, as the user fills the liquid container 610, the user may choose to separate the suction grill 210 from the second housing 200 and put the suction grill 210 in the dishwasher for cleaning. can be put The suction grill 210 may be mounted again after step 16 when the user discards the collected condensate.

As an alternative to the damper 660 closed in step 8, the damper 660 may remain open, and the user may mount the liquid container to the lower part of the second housing 200 under the suction grill 210. Alternatively, a liquid container may be provided under the suction grill 210 to capture the condensed water that has been erroneously delivered. Although it may be inconvenient to mount the liquid container, the suction grill 210 can be cleaned by a steam cleaning process if the damper 660 remains open. The liquid container may be latched, fixed magnetically, or press-fitted. The embodiments disclosed herein are not limiting.

As a simpler implementation, the steam generator 312, the second housing 200, the damper 660, and the fan 300 can be operated according to a simple time-based steam cleaning program, such as first and second, After the user's instruction, after sensing the liquid container 610 inserted into the condensed water guide 611, or after the second housing 200 is raised, the calculated predetermined number of times may be operated.

29 to 31, it is disclosed that the configuration of the steam sprayer 670' in the kitchen hood 1 of the present disclosure is different from the embodiment described above. The steam sprayer 670' disclosed herein may remove dust and/or oil (hereinafter referred to as 'foreign matter') inside the kitchen hood 1 by using steam. The steam sprayed from the steam sprayer 670 ′ may remove foreign substances in the interior of the second housing 200 and the interior of the inner housing 120 of the first housing 100 .

In the present disclosure, steam of a predetermined temperature is used to remove foreign substances that may be attached to various parts inside the kitchen hood 1 . The steam is sprayed on the foreign substances to separate the foreign substances, and the foreign substances are mixed with the condensed water in which the steam is condensed and transferred to the condensate collector 650 . Condensate and foreign substances guided by the condensate collector 650 may be transferred to the liquid container 610 and collected.

29 and 30 , the steam sprayer 670 ′ sprays steam into a wider area inside the second housing 200 and inside the inner housing 120 of the first housing 100 . can be configured. Looking at the specific configuration of the steam sprayer 670', the first main pipe 673 and the second main pipe 673' may be positioned above the condensate collector 650 with a height difference. The first main pipe 673 may be directly above the condensate collector 650 , and the second main pipe 673 ′ may be adjacent to the upper end of the inside of the second housing 200 . . The second main pipe 673 ′ may be relatively higher than the first main pipe 673 .

The shapes of the first main pipe 673 and the second main pipe 673' are the same in this embodiment. However, the shapes of the first main pipe 673 and the second main pipe 673 ′ may be different from each other. The shape of the entire steam distributor 670 including the first main pipe 673 , the second main pipe 673 ′ and the auxiliary pipe 674 to be described below is that the suction air moves upward and the condensed water It can be designed to minimize the interference of falling in the downward direction. The first main pipe 673 , the second main pipe 673 ′, and the auxiliary pipe 674 may be positioned to have a predetermined distance from the inner surface of the second housing 200 .

Also, the inside of the entire steam distributor 670 ′ may be hollow. That is, the first main pipe 673 and the second main pipe 673 ′ may have a polygonal frame or a ring shape including a rectangular frame so that air and condensate can pass through the center. The steam distributor 670 ′ may have the same horizontal cross-sectional shape as that of the second housing 200 .

In the steam distributor 670', there may be an auxiliary pipe 674 to connect between the first main pipe 673 and the second main pipe 673'. In this embodiment, four of the auxiliary pipes 674 are connected to both ends at positions adjacent to the corners of the first main pipe 673 and the second main pipe 673'. The auxiliary pipe 674 may be connected to the first main pipe 673 and the second main pipe 673' at positions other than the corners. The auxiliary pipe 674 may extend long in the elevating direction of the second housing 200 . The auxiliary pipe 674 may connect the inside of the first main pipe 673 and the second main pipe 673 ′ to transmit steam.

In this embodiment, steam may be delivered from the steam generator 612 through one tube 671 . That is, steam is transmitted to the first main pipe 673 through a tube 671 , and steam is transmitted from the first main pipe 673 to the second main pipe 673 ′ through the auxiliary pipe 674 . can be However, steam may be delivered to the first main pipe 673 , the second main pipe 673 ′, and the auxiliary pipe 674 through separate tubes 671 , respectively. In this way, when a plurality of tubes 671 are used, steam can be sprayed at substantially the same pressure from the nozzles 672 of the first main pipe 673 , the second main pipe 673 ′, and the auxiliary pipe 674 .

Alternatively, the steam distributor 670 ′ has the same shape as the first main pipe 673 or the second main pipe 673 ′ without the auxiliary pipe 674 in the vertical direction. It may be configured to be positioned with a In this case, a separate tube 671 is connected to each of the main pipes, respectively, so that steam can be delivered.

The steam distributor 670 ′ may be coupled to a front plate and a rear plate 653 of the condensate collector 650 . In the illustrated embodiment, the first main pipe 673 is coupled to the front plate and the rear plate 653 . Alternatively, the steam distributor 670 ′ may be fixed to one side of the inner surface of the second housing 200 .

The first main pipe 673 , the second main pipe 673 ′, and the auxiliary pipe 674 may include nozzles 672 at predetermined intervals. The configuration of the nozzle 672 may be the same as described in the above embodiment. The nozzle 672 may be formed at a predetermined interval on the entire outer surface of the first main pipe 673 , the second main pipe 673 ′, and the auxiliary pipe 674 . Alternatively, the nozzles 672 may be located at a position where steam can be sprayed toward an area where a lot of foreign substances are mainly attached.

In this embodiment, since air flows through the left and right portions of the second housing 200 based on the drawings, the second housing 200 and the inner housing 120 of the first housing 100 A lot of foreign substances may be attached to the left inner surface and the right inner surface. The configuration and operation of the nozzles 672 may be the same as those described in the above embodiment. In this embodiment, the steam discharged from the nozzles 672 may be more rapidly delivered to the inside of the second housing 200 and the inside of the inner housing 120 of the first housing 100 .

In particular, in this embodiment, steam may be sprayed in a state in which the second housing 200 is accommodated inside the first housing 100 and moved to the lower part of the first housing 100 , so the sprayed steam It can be sprayed at a closer distance to this target position.

Steam windows 200w on the left and right sides of the second housing 200 so that the steam discharged through the nozzle 672 of the steam distributor 670 ′ is well transferred to the inner surface of the inner housing 120 . ) can be formed. The steam window 200w may be formed in upper regions of the left and right sides of the second housing 200 . The steam sprayed through the steam window 200w may be delivered to the inner surface of the inner housing 120 .

Among the first main pipe 673, the second main pipe 673', and the auxiliary pipe 674 of the steam distributor 670', a nozzle 672 is also provided on the outer surface opposite to the inner surface of the second housing 200. can be located. That is, the nozzle 672 is positioned so that steam is sprayed into a region penetrating the center of the steam distributor 670 ′. As shown in FIG. 30 , the fan housing 310 is positioned in a region penetrating the center of the steam distributor 670 ′ in a state where the second housing 200 is accommodated inside the first housing 100 . This is so that steam can be sprayed on the outer surface of the fan housing 310 in a state where possible.

When steam is sprayed from the steam distributor 670 ′ while the second housing 200 is accommodated inside the first housing 100 , as shown in FIG. 34 , the fan housing 310 is removed. Steam may be delivered to the inner region of the inner housing 120 of the first housing 100 and the inner region of the second housing 200 . Here, the region to which the steam is delivered is a portion surrounded by a thick solid line in FIG. 34 , and steam may be mainly sprayed to an area where an arrow is drawn. In this case, steam may be mainly delivered to the fan 300 , that is, the outer surface of the fan housing 310 . Of course, steam may also be delivered to the upper inner surface of the inner housing 120 . Steam may also be delivered to the inner upper portion of the second housing 200 .

Steam generated by the steam generator 612 may be delivered to the steam distributor 670 ′ through the tube 671 . The steam delivered to the steam distributor 670 ′ can be delivered to the inner space of the second housing 200 and the inner space of the inner housing 120 of the first housing 100 through each nozzle 672 . there is.

Steam is mainly injected into the inner space of the second housing 200 and the inner surface of the inner housing 120 of the first housing 100 through the nozzle 672 of the first main pipe 673, and Steam may be mainly injected into the inside of the inner housing 120 and the fan housing 310 through the second main pipe 673 ′. The steam injected through the auxiliary nozzle 674 may be injected into the fan housing 310 , the inner surface of the inner housing 120 , and the inner upper portion of the second housing 200 .

The steam sprayed in this way can separate foreign substances adhering to each part and make it fall. In addition, the condensed water produced by condensing the steam may be delivered to the condensate collector 650 by falling together with foreign substances. The condensed water may be collected in the liquid storage container 610 through the first and second condensed water passages 662a and 663a through the opening 650a. A portion of the condensed water may be transferred to the damper 660 through the gap between the tabs 651 . However, in a state in which the damper 660 is closed, condensed water may be guided along the surface of the damper 660 and delivered to the liquid guide 663 . The condensed water transferred to the liquid guide 663 may be collected in the liquid storage container 610 through the second condensed water passage 663a.

And, in a state in which the second housing 200 protrudes to the outside of the first housing 100 and is relatively lowered to the lower part of the first housing 100, the entire interior of the second housing 200 and Steam may be delivered into the inner housing 120 of the first housing 100 . This area is a portion surrounded by a thick solid line in FIG. 35 , and steam may be mainly sprayed to an area where an arrow is drawn. Here, the region where steam is mainly sprayed is the upper portion of the second housing 200 and the lower portion of the inner housing 120 .

In other words, steam may be mainly sprayed on the upper portion of the inside of the second housing 200 , and steam may also be sprayed and delivered to the inner region of the inner housing 120 . In this state, steam may be delivered to the lower inner surface of the inner housing 120 through the steam window 200w. Of course, even in the state of FIG. 35 , steam may be delivered to some extent toward the fan 300 .

Here too, the steam generated by the steam generator 612 may be delivered to the steam distributor 670 ′ through the tube 671 . The steam delivered to the steam distributor 670 ′ is transmitted through each nozzle 672 to the inner space of the second housing 200 and the inner space of the inner housing 120 of the first housing 100 , particularly relatively It can be transmitted to the inner space of the lower part. Steam is mainly injected into the inner space of the second housing 200 through the first main pipe 673, and mainly from the inside of the inner housing 120 through the second main pipe 673'. Steam may be injected relatively into the lower portion and the fan housing 310 . Steam injected through the auxiliary nozzle 674 may be injected through the steam window 200w to a relatively lower portion of the interior of the inner housing 120 .

The steam sprayed in this way can separate foreign substances adhering to each part and make it fall. In addition, the condensed water produced by condensing the steam may be delivered to the condensate collector 650 by falling together with foreign substances. The condensed water may be mainly collected in the liquid storage container 610 through the first and second condensed water passages 662a and 663a through the opening 650a.

A portion of the condensed water may be transferred to the damper 660 through the gap between the tabs 651 . However, in a state in which the damper 660 is closed, condensed water may be guided along the surface of the damper 660 and delivered to the liquid guide 663 . The condensed water transferred to the liquid guide 663 may be collected in the liquid storage container 610 through the second condensed water passage 663a.

In the disclosed kitchen hood 1 , since the second housing 200 elevates with respect to the first housing 100 , the steam distributor 670 ′ moves together with the second housing 200 while moving along with the second housing 200 . Steam can be provided to the entire area. In particular, through the steam window 200w of the second housing 200, the steam is directly supplied to the inner upper portion (refer to FIG. 34) and the inner lower portion (referred to FIG. 35) of the inner housing 120 of the first housing 100. It can be delivered, so that steam cleaning of the entire inner area of the inner housing 120 can be performed.

On the other hand, referring to FIGS. 32 and 33 , in order to prevent leakage of steam between the outer surface of the second housing 200 and the inner surface of the inner housing 120 of the first housing 100, a wiper 675 is provided. can be used In addition to the function of preventing leakage of steam or condensed water, the wiper 675 may also serve to separate and collect condensed water and foreign substances on the inner surface of the inner housing 120 . The wiper 675 may be positioned between an outer surface of the second housing 200 and an inner surface of the inner housing 120 .

The wiper 675 may have a front and rear width corresponding to a distance between the second housing 200 and the inner housing 120 . The wiper 675 may have left and right widths extending long in the left and right width directions of the outer surface of the second housing 200 .

The wiper 675 may be mounted on the outer surface of the second housing 200 . A contact piece 676 may be provided at the tip of the wiper 675 . The contact piece 676 at the tip of the wiper 675 may be in close contact with the inner surface of the inner housing 120 . The contact piece 676 may be made of a material having elasticity, such as rubber. The contact piece 676 may be in close contact with the inner surface of the inner housing 120 to scrape off foreign substances and/or condensed water on the inner surface of the inner housing 120 . The contact piece 676 may be made separately from the wiper 675 and coupled to the wiper 675 .

The foreign substances and condensed water collected by the wiper 675 may flow to the condensed water collector 650 through the drain hole 200h formed in the second housing 200 . The drain hole 200h is formed through the second housing 200 and may be opened at a position corresponding to the upper end of the condensate collector 650 .

The drain hole 200h may be perforated at a position corresponding to the middle portion of the wiper 675 in the width direction. The upper surface of the wiper 657 may be inclined toward the outer surface of the second housing 200 . That is, an inclined surface 677 may be formed on the upper surface of the wiper 657 . The inclined surface 677 may be inclined downward toward the outer surface of the second housing 200 . The inclined surface 677 may also be inclined downward toward the drain 677 ′ formed in the wiper 657 .

The inclined surface 677 may have a double inclination as shown in FIGS. 32 and 33 . That is, the inclined surface 677 is inclined downward from the contact piece 676 toward the outer surface of the second housing 200 , and at the same time, from both ends of the wiper 675 to the drain hole 200h. can This double inclination of the inclined surface 677 allows the condensed water and foreign substances collected by the wiper 675 to be smoothly transferred to the drain hole 200h to flow to the condensed water collector 650 .

At the lowest position on the inclined surface 677 of the wiper 675 , there may be a drain channel 677 ′ corresponding to the drain hole 200h. The drain channel 677 ′ serves to guide condensed water and foreign substances to the drain hole 200h. The drain 677 ′ may extend a predetermined length from the middle of the front-rear width of the wiper 675 toward the drain hole 200h.

The wiper 675 may be installed on the outer surface of the second housing 200, and the second housing 200 may be located directly facing the inner surface of the inner housing 120 of the first housing 100. can The left and right lengths of the wiper 675 may be determined so as not to interfere with components between the outer surface of the second housing 200 and the inner surface of the inner housing 120 . For example, the length of the wiper 675 is designed so that it does not interfere with the first rail 410 and the second rail 420 positioned vertically between the inner housing 120 and the second housing 200 . can be made When there are parts such as the first rail 410 and the second rail 420 , a plurality of wipers 675 may be provided on one outer surface of the second housing 200 . The wiper 675 may be positioned at a position that does not interfere with the first rail 410 and the second rail 420 , respectively.

For example, when there is one pair of the first rail 410 and the second rail 420 on one outer surface of the second housing 200 , there may be at least two wipers 675 . When there are two pairs of the first rail 410 and the second rail 420 , there may be at least three wipers 675 .

The configuration of each wiper 675 is the same as described above, and one exhaust hole 200h may be perforated for one wiper 675 . For reference, the wiper 675 may be applied to the embodiment described above in addition to the embodiment described with reference to FIG. 29 .

When the wiper 675 operates to remove foreign substances by spraying steam from the steam distributor 670 ′, steam, condensed water, foreign substances, etc. This can be prevented from leaking. In addition, when the second housing 200 moves in and out of the inner housing 120 , the contact piece 676 at the tip of the wiper 675 moves in close contact with the inner surface of the inner housing 120 . For example, when the second housing 200 rises to enter the interior of the inner housing 120 , the contact piece 676 moves while being in close contact with the inner surface of the inner housing 120 , the inner housing 120 . ) will scrape up condensate and foreign substances on the inner surface.

In this operation, condensed water and foreign substances are accumulated on the inclined surface 677 of the wiper 675 , and the condensed water and foreign substances are moved along the inclined surface 677 by the inclination and gravitational action of the inclined surface 677 . The inclined surface 677 has a downward inclination toward the outer surface of the second housing 200 as well as a downward inclination toward the drain 677 ′ extended to the drain hole 200h, so that condensed water and foreign substances are discharged into the drain. 677 ′, and eventually condensed water and foreign substances may be transferred to the condensed water collector 650 through the drain hole 200h.

The collection of condensed water and foreign substances by the wiper 675 may be performed even when the second housing 200 descends with respect to the inner housing 120 . Of course, the amount of condensed water and foreign substances collected during the lifting operation is small, but the condensed water and foreign substances that have fallen on the inclined surface 677 of the wiper 675 are discharged along the inclined surface 677 to the drain 677', drain hole 200h. ) through the condensate collector 650 may be delivered.

36 is a block diagram of components connected to a control unit for controlling the kitchen hood, and FIGS. 37 to 44 are flowcharts illustrating a kitchen hood control method according to embodiments.

In the kitchen hood, the controller 920 may determine whether a preset operation condition of the kitchen hood 1 is satisfied. When the operation condition is satisfied, the kitchen hood 1 may start to operate in the initial state. The initial state may be set in various ways. For example, the initial state may be a state in which the second housing 200 is completely inserted into the inner space of the first housing 100 , and the fan 300 may be in a stopped state. A position where the second housing 200 is completely inserted into the inner space of the first housing 100 may be referred to as an initial position. Also, in the initial state, the left and right dampers 660L and 660R may be in a closed state. Alternatively, the open state may be set as the initial state.

This operating condition may be a condition for starting the operation of the kitchen hood 1 . For example, when the user touches the power button displayed on the display 130 of the first housing 100 , the control unit 920 may determine that the operation condition is satisfied. Alternatively, the kitchen hood 1 may determine that the operation condition is satisfied when it is sensed that the cooking apparatus 3 is turned on through the communication unit 917 . To this end, the communication unit 917 may communicate with the cooking apparatus 1 in a wired/wireless communication method to transmit/receive necessary information and/or data. Alternatively or in addition to this, the communication unit 917 may be implemented to enable wireless communication with an external device (not shown) other than the cooking device 3 . The operation may be started by receiving a wireless signal input from the user. For example, the user may turn on/off the power by communicating with the communication unit 917 using the remote controller device.

In one embodiment, referring to FIGS. 36 and 37 , as described above, the controller 920 determines whether the operating condition of the kitchen hood 1 is satisfied, and when it is determined that the operating condition is satisfied, the kitchen hood 1 operates can be controlled to start. [S101: operation condition judgment step]

When the operating condition is satisfied, the control unit 920 may operate the plurality of distance sensors 801 fixedly installed on the lower surface of the first housing 100 . The distance sensor 801 may measure a distance of an object under the kitchen hood 1 . The distance sensor 801 can measure the distance of the cooking device 3 installed below the kitchen hood 1, and if the cooking tool is present in the heat generating unit 805 of the cooking device 3, the You can also measure distance. If there is no cooking tool in the heat generating unit 805 , the distance sensor 801 may measure the first distance to the heat generating unit 805 . If there is a cooking tool in the heat generating unit 805, a second distance smaller than the first distance may be measured.

Also, the second distance may be measured differently depending on the type of cooking utensils. For example, since the frying pan is generally lower in height than the pan, the second distance of the frying pan may be greater than the second distance of the pan. The distance sensor 801 may measure the distance in real time, and the measured result may be transmitted to the controller 920 . The controller 920 may measure the distance of the cooking apparatus 3 based on the result measured by the distance sensor 801, whether or not the cooking utensils are present in the cooking apparatus 3, and, if present, the distance of the cooking utensils. there is.

The distance sensors 801 may be installed at positions and numbers corresponding to the heat generating units 805 of the cooking apparatus 3 installed under the kitchen hood 1 ( FIG. 30 ). As shown in FIG. 30 , each distance sensor 801 may be preferably installed at a position close to each heat generating unit 805 . If the position of the heat generating unit 805 is changed, the position of the distance sensor 801 may also be changed to correspond thereto. In another embodiment, the distance sensor 801 may measure the distance of an object located below in real time even while the second housing 200 is stopped and/or raised or lowered, or the fan 300 is operating and/or stopped It is also possible to measure the distance of an object in the middle. [S103: Distance measurement step]

The controller 920 may determine the lowering position of the second housing 200 by comparing the measured distance measured by the distance sensor 801 with a preset first set distance. The lowering position of the second housing 200 may be set in a plurality of steps. A lowering position of the second housing 200 may be determined depending on whether or not a cooking tool is installed in the heat generating unit 805 of the cooking apparatus 3 . In the case of a relatively high cooking tool, the lowering position of the second housing 200 may be higher than that of a relatively low cooking tool. This first set distance may be a reference value for determining the lowering position of the second housing 200 . The reference value may be changed according to an installation position (height) of the kitchen hood 1 , a distance from a cooking device, a height of a cooking tool, and the like. [S105: first distance comparison step]

When at least one distance among the distances measured by the plurality of distance sensors 801 is less than or equal to a first preset distance, the controller 920 drives the lifting motor 254 to move the second housing 200 to a preset first position. can be lowered to When the measured distance is equal to or less than the first set distance, it may mean that the cooking utensils are placed on the heat generating unit 805 of the cooking apparatus 3 . The measuring distance may be shorter when there is a cooking tool than when there is no cooking tool. The first set distance may be a reference distance for determining whether or not there is a cooking tool in the heat generating unit 805 of the cooking apparatus 3 .

When the measurement distance is less than or equal to the first set distance, it is possible to lower the second housing 200 only to the first position because the cookware exists under the kitchen hood 1 . This is a relatively small drop. If the heat generating unit 805 has a high-height cooking tool, the first position may be a relatively higher position. If there is a cooking tool, if the second housing 200 descends further down than the first position, the second housing 200 may collide with the cooking tool or the user may interfere with the second housing 200 when cooking. there is. Accordingly, in this case, the problem can be prevented by descending only to the first position. [S107: Step of descending to the first position of the second housing]

When the second housing 200 is lowered to the first position, the controller 920 may drive the fan motor 907 to rotate the fan 300 . When the fan 300 rotates, air may be sucked into the inside of the second housing 200 through the suction port. The controller 920 may control the operating speed of the fan motor 907 by controlling the current supplied to the fan motor 907 to adjust the rotation speed of the fan 300 . The rotation speed of the fan 300 may determine the amount of air flowing. [S109: Fan drive stage]

When the second housing 200 descends to suck air, whether or not close suction is performed may be displayed on the display 130 according to the position of the suction port. Proximity suction may mean whether the second housing 200 is suctioned in proximity to the cooking device 3 . When the second housing 200 is lowered to the first position, the controller 920 may display on the display 130 that the proximity suction is not. Alternatively, it is possible to indicate that it is not close suction by turning off the lighting as opposed to turning on the lighting for close suction during close suction. Alternatively or in addition to this, the control unit 920 may output a guide voice indicating that the proximity suction is not through the voice output unit 913 .

When the second housing 200 descends to the first position, the control unit 910 may determine whether a set time has elapsed from the time when the lowering of the second housing 200 is completed using the timer 905, and the set time If there is no additional elevation of the second housing 200 until elapsed, a display and/or voice indicating that the proximity suction is not performed may be output. The absence of additional elevation in a state in which the second housing 200 is lowered to the first position means that the height of the cooking utensil remains the same or the distance between the distance sensor 801 and the cooking utensil is maintained at or below the first set distance even if there is a change. it could be to do [S111: Proximity suction off display step]

If at least one of the distances measured by the plurality of distance sensors 801 in step S105 is greater than the first set distance, the control unit 920 drives the lifting motor 254 to move the second housing 200 to the first position. It can be lowered to a relatively lower second position. If the measurement distance is greater than the first set distance, it may mean that there is no cooking tool in the heat generating unit 805 of the cooking apparatus 3 .

By further lowering the second housing 200 to the second position, the suction port (suction grill) may be more exposed to the outside, and more air may be sucked in. When the second housing 200 is lowered to the second position, it may be relatively closer to the cooking device 3 . The second position may be the lowest position at which the second housing 200 can descend, or alternatively, the lowest position may be set below the second position.

In the disclosed embodiment, the first position may be, for example, 16 cm below the initial position, and the second position may be, for example, 26 cm below the initial position. When viewed from the initial position, the second position is lower than the first position, and the second position may be a case in which the second housing 200 is further lowered. Of course, these numerical values are exemplary and it is natural that other numerical values can be changed. [S113: Step of descending to the second position of the second housing]

When the second housing 200 is lowered to the second position, the controller 920 may drive the fan motor 907 to rotate the fan 300 . When the fan 300 rotates, air may be sucked into the inside of the second housing 200 through the suction port. [S115: Fan driving stage]

When the second housing 200 descends to the second position to suck air by the rotation of the fan 300 , the control unit 920 may display on the display 130 that the proximity suction operation is in progress. Alternatively or in addition to this, the control unit 920 may control the voice output unit 913 to output a guide voice for the proximity suction operation. Accordingly, the user can audibly confirm that the kitchen hood 1 is operating by proximity suction. [S117: Proximity suction on display step]

The lowering of the second housing 200 may be performed in a plurality of steps. For example, it may be moved up and down to a different position depending on the initial operation, ambient temperature, air quality level, the presence or absence of a cooking tool in the cooking apparatus 3 , a distance from the cooking tool, and the like. For example, when the kitchen hood 1 starts to operate, it may be lowered to the lowest position. In a state in which the descent to the lowest position is completed, the distance from the distance sensor 801 to the cooking tool may be changed to another position according to the real-time measurement distance. The position of the second housing 200 may be divided into the initial position, a first position that is one step lower than the initial position, a second position that is one stage lower than the first position, and a lowest position that is one stage lower than the second position. These positions and stages are examples, and can be classified into three stages of an initial position, an intermediate position, and a lowermost position, or two stages of an initial position and a lowest unit value.

Alternatively, when the lift button displayed on the display 130 is touched, the controller 920 drives the lift motor 453 to adjust the position of the second housing 200 . The elevating button may include, for example, an elevating button for elevating the second housing 200 and a lowering button for lowering, and as another example, one elevating button is provided so that the elevating button is raised and lowered whenever the elevating button is touched once. It may be carried out alternately.

As another embodiment, referring to FIGS. 36 to 38 , the second housing 200 may be lowered to the first position. [S201: Descend to the first position of the second housing]

While the second housing 200 is descending to the first position or when descending to the first position is completed, the distance from the distance sensor 801 to the object below may be measured. The measured distance may be transmitted to the controller 920 . [S203: Distance measurement step]

The controller 920 may determine whether the measurement distance measured by the distance sensor 801 is less than or equal to a preset first set distance. The first set distance may be a reference distance for determining whether there is a cooking tool in the heat generating unit 805 of the cooking apparatus 3 . [S205: judgment step]

If the measurement distance is less than or equal to the first set distance, the position of the second housing 200 may be maintained as the current first position. When the measurement distance is less than or equal to the first set distance, it may mean that the cookware is present in the heat generating unit 805 . Accordingly, the position of the second housing 200 may be maintained as the first position in order to maintain the distance from the cooking tool to the predetermined distance or more. In the state maintained in the first position, the process proceeds to step S203 to continuously measure the real-time distance, and subsequent steps may be repeated. [S207: 1st position maintenance step]

If the measurement distance is greater than the first set distance, the second housing 200 may be further lowered because the cookware does not exist in the heat generating unit 805 . That is, when the measurement distance is greater than the first set distance, the second housing 200 may be lowered to a second position, which is a position relatively lower than the first position. [S209: step down to the second position]

As another embodiment, referring to FIGS. 36 to 39 , the second housing 200 may descend to a second position. [S301: Lowering to the second position of the second housing]

While the second housing 200 is descending to the second position or when descending to the second position is completed, the distance from the distance sensor 801 to the object below may be measured. The measured distance may be transmitted to the controller 920 . [S303: Distance measurement step]

The controller 920 may determine whether the measurement distance is greater than a preset first set distance. The first set distance may be a reference distance for determining whether there is a cooking tool in the heat generating unit 805 of the cooking apparatus 3 . [S305: Judgment step]

If the measurement distance is greater than the first set distance, the position of the second housing 200 may be maintained as the current second position. When the measurement distance is greater than the first set distance, it may mean that the cooking utensils are not present in the heat generating unit 805 . Accordingly, the position of the second housing 200 is maintained at the second position so that the suction port is closer to the cooking apparatus. In the state maintained in the second position, the process proceeds to step S303 to measure the real-time distance, and the subsequent process may be repeated. [S307: 2nd position maintenance step]

If the measurement distance is less than or equal to the first set distance, since the cookware is present in the heat generating unit 805, the position of the second housing 200 is adjusted to increase the distance between the second housing 200 and the cookware. can be moved Accordingly, when the measurement distance is less than or equal to the first set distance, the second housing 200 may be raised to the first position, which is a relatively higher position than the second position. Thereafter, the process proceeds to step S303 and the subsequent process may be repeated. [S309: step down to the second position]

As another embodiment, referring to FIGS. 36 and 40 , the controller 920 may determine whether an operating condition of the kitchen hood 1 is satisfied. When the operating condition is satisfied, the kitchen hood 1 may start to operate. If the operating conditions are not satisfied, the standby state can be maintained. [S401: Operation condition determination step]

When the operating condition is satisfied, the controller 920 may operate the plurality of air quality sensors 520a, 520b, and 520c to measure at least one type of air quality. The plurality of air quality sensors 520a, 520b, and 520c include, for example, a first sensor 520a for measuring fine dust in the surrounding air, a second sensor 520b for measuring the smell of ambient air, and ambient air. It may include at least one or more of the third sensor 520c for measuring the gas. Alternatively or additionally, it may further include a sensor for measuring the oil in the ambient air. Here, the third sensor 520c may measure at least one of carbon monoxide, carbon dioxide, VOC gas, and methane gas. [S403: Air quality measurement step]

The controller 920 may classify the air quality measurement values of different types into a plurality of levels. 45 shows, as an example, a mapping relationship between the air quality measurement value and the air volume in stages. Referring to the drawing, the air quality sensors 520a, 520b, and 520c are exemplified as measuring VOCs, fine dust, and CO2, for example, and a level of air volume corresponding to the air quality measurement value for each type can be assigned. there is. The level of the air quality measurement value may mean a state or level of the measured air quality. For example, as shown in the drawing, if the measured value of VOC is X1 or less, it may be stage 0, if the measured value is X1 to X2, stage 1, if it is X2 to X3, stage 2, if X3 to X4, stage 3, etc. Fine dust and CO2 can also be classified into a plurality of stages according to the measured values. Also, in terms of air quality condition or level, level 0 may be relatively the best. It may be that the air quality condition or level worsens as you go to step 1, step 2, step 3, etc. Of course, you can also set it the other way around. Alternatively, stage 0 may be divided into a 'good' stage, stage 1 as a 'normal' stage, stage 2 as a 'bad' stage, and stage 3 as a 'very bad' stage. The number of these steps may vary. As an example, it may be divided into only steps 0 and 1, or as another example, it may be divided into steps 0 to 2, 0 to 3, 0 to 4, 0 to 5, and the like. In this case, the last stage may be the highest stage (hereinafter referred to as the highest stage). Highest could mean that the air quality condition or level in question is the worst.

This level may be related to the air volume. The stage 0 may be a stage in which no air volume is generated. The absence of air volume may mean that the fan 300 does not rotate because the controller 920 does not drive the fan motor 907 . The first stage may be a stage in which the relatively smallest air volume is generated. Step 2 may be a step in which a stronger wind volume than step 1 is generated, and step 3 may be a step in which a stronger wind volume than step 2 is generated. In this case, the last stage may be the highest stage in which the strongest wind volume is generated. [S405: Level classification step of air quality measurement value]

The control unit 920 may display steps corresponding to air quality measurement values for different types in the plurality of air quality sensors 520a, 520b, and 520c on the display 130 for each type. For example, a level corresponding to air quality measurement values of VOC, fine dust, and CO2 may be displayed on the display 130 . Each type may be displayed in different stages, and at least some may be displayed in the same stage. [S407: air quality level display stage]

The controller 920 may drive the fan motor 907 to generate a different air volume for each step. Accordingly, it is possible to generate different air volumes for each step of the air quality measurement value. For example, the higher the air quality measurement, the higher the level, the stronger the airflow. At this time, it may be determined whether at least one type of air quality measurement value among other types of air quality measurement values measured by the air quality sensors 520a, 520b, and 520c is a high level. For example, it is to determine whether any one of VOC, fine dust, and CO2 is the highest level. [S409: Highest stage judgment stage]

As a result of the determination, when the measured value of at least one type of air quality is at a high level, it means that any type of air quality is the worst. To this end, first, the control unit 920 may lower the second housing 200 or, if it is partially lowered, may further lower it. It can be further lowered to a preferred second position. The second position may be, for example, a lowermost position. [S411: second housing lowering step]

When the second housing is lowered, the control unit 920 may drive the fan motor 907 to generate an air volume corresponding to the highest stage to rotate the fan 300 . The air volume corresponding to the highest stage may be the maximum air volume. This is for absorbing and discharging air with a strong wind volume since the air quality condition or level is the worst. The fan 300 may be rotated at the maximum rotation speed for the maximum air volume. [S413: Maximum air volume generation]

However, if at least one type of air quality measurement value is not the highest level in step S409, the control unit 920 operates the fan motor 907 to generate an air volume corresponding to the relatively highest level among the air quality measurement values for each type. It can be driven to rotate the fan 300 . For example, if VOC is level 1, fine dust is level 2, and CO2 is level 3, the relatively highest level of measurement for each type is level 3. Accordingly, the fan 300 may be rotated to generate an air volume corresponding to the third step. At this time, depending on the embodiment, step 3 may or may not be the highest level. As another example, if VOC is level 0, fine dust is level 1, and CO2 is level 2, the relatively highest level may be level 2. As another example, if VOC and fine dust are at level 0 and CO2 is at level 1, the relatively highest level is level 1. In other embodiments, all of the steps may be the same. [S415: High-level air volume generation stage]

After steps S413 and S415, the process proceeds to step S405 and the subsequent process may be repeated.

As another embodiment, referring to FIGS. 36 and 41 , the control unit 920 may determine whether an operating condition is satisfied and operate the kitchen hood 1 when the operating condition is satisfied. If the operating conditions are not satisfied, the standby state can be maintained. [S501: operation condition judgment step]

When the set operating condition is satisfied, the control unit 920 may turn on the light 703 installed on the lower surface of the second housing 200 . [S503: Light on stage]

The controller 920 may determine whether at least one of the plurality of heat generators 805 installed in the cooking apparatus 3 is turned on. The control unit 920 may determine whether the heat generating unit 805 is on/off in various ways. For example, the control unit 920 communicates with the cooking apparatus 3 through the communication unit 917 to determine whether the cooking apparatus 3 is on/off, whether the plurality of heat generating units 805 are on/off, and the heat generating unit ( 805), it is possible to receive information such as the existence of cooking utensils. As another example, the control unit 920 uses the temperatures measured by the plurality of temperature sensors 802 installed in the first housing 100 at positions and numbers corresponding to the positions and numbers of the heat generating units 805 to generate the heat generating units. It may be determined whether the 805 is on/off. The former may be more accurate than the latter. In the former case, it is possible to determine not only whether the heat generator 805 is on/off, but also which position the heat generator 805 is on/off. The on of the heat generating unit 805 may mean that the cooking apparatus 3 is turned on. [S505: Heat generating unit ON determination step]

When the heat generating unit 805 is turned on, the control unit 920 may open the left or right suction port corresponding to the position of the heat generating unit 805 . Specifically, the air sucked through the left suction port and the right suction port may be sucked into the left flow path and the right flow path, respectively. When the left heat generating unit 805 is turned on, the control unit 920 allows the left damper 660L to be opened, and when the right heat generating unit 805 is turned on, the controller 920 controls the right damper 660R to open. can be made open. When the heat generating unit 805 is turned off, the damper 660 at the corresponding position may be closed. [S507: Inlet opening step]

The controller 920 may receive air quality measurement values measured by the plurality of air quality sensors 520a, 520b, 520c 520 . The plurality of air quality sensors 520a, 520b, and 520c may measure the air quality of the surrounding air in real time. [S509: Air quality measurement step]

The controller 920 may cause the fan 300 to rotate by driving the fan motor 907 to generate an air volume corresponding to the air quality measurement value. The steps and air volumes corresponding to the air quality measurement values for each type are described in detail in FIG. 35 and in steps S405 to S415 described above. [S511: Air volume generation stage]

In addition, the plurality of distance sensors 801 may measure a distance to an object existing below in real time, and transmit the measured distance to the controller 920 . [S513: Distance measurement step]

The controller 920 may drive the elevating motor 453 according to the measurement distance to elevate the second housing 200 . The lifting and lowering of the second housing 200 according to the measurement distance is described in detail in FIGS. 32 to 34 and in the above-described steps S103 to S115, S201 to S209, and S301 to S309. That is, according to the measurement distance, the second housing 200 may be lowered from the initial position to the first position or the second position, may be lowered from the first position to the second position, or from the second position to the first position. may rise.

In this case, the ascent from the second position to the first position may be performed immediately, and the descent from the first position to the second position may be performed after a set time has elapsed. This may be a case in which a cooking tool is placed or a user's hand is sensed when the measurement distance is smaller than the first set distance in a state where the second housing 200 is in the second position. This means that the cooking tool or the user's hand is close to the second housing 200, so to keep the second housing 200 at a certain distance from the cooking tool or the user's hand, the second housing 200 is moved to the first to rise to position. It is preferable that this ascent is carried out immediately. Conversely, when the measurement distance is greater than the first set distance in a state where the second housing 200 is in the first position, there may be no cooking utensils or the user's hand is not detected. This may mean that the cooking tool or the user's hand has moved away from the second housing 200 . In this case, it may be necessary to check whether the distance from the object under the second housing 200 is temporary or whether the cooking is finished. If the measurement distance is continuously maintained for a preset time, the second housing 200 may be further lowered because the cooking tool is gone, cooking is complete, or the user's hand is no longer sensed. [S515: Second housing lifting step]

If it is determined in step S505 that the heat generating unit 805 is in the off state in the control unit 920, it may be determined whether the cooking apparatus 3 is turned off. The OFF of the heat generating unit 805 may be due to the OFF of the cooking device 3 , or may be the ON or OFF of only the heat generating unit 805 of the cooking device 3 . The control unit 920 may receive whether the cooking apparatus 3 is on/off through the communication unit 917 . [S517: Cooking device off determination step]

If the cooking apparatus is not turned off, the process proceeds to step S505 and the subsequent processes are repeated. When the cooking apparatus is off, the controller 920 may turn off the turned-on light 703 . Thereafter, the hood operation mode may be terminated. [S519: Light off stage]

As another embodiment, referring to FIGS. 36 and 42 , a plurality of temperature sensors 802 may be installed in the first housing 100 of the kitchen hood 1 . For example, the first temperature sensor 802a is installed on the upper part of the first housing 100 to measure the upper ambient temperature of the kitchen hood 1 , and the second temperature sensor 802a is installed on the lower left side of the first housing 100 . A temperature sensor 802b is installed to measure the ambient temperature of the lower left surface of the kitchen hood 1, and a third temperature sensor 802c is installed to the lower right surface of the first housing 100 to measure the kitchen hood ( You can measure the ambient temperature of the lower right side of 1). The second temperature sensor 802b and the third temperature sensor 802c may correspond to positions of the heat generating unit 805 of the cooking apparatus 3 installed below. For example, the second temperature sensor 802b installed on the left side of the first housing 100 may respond relatively faster to the temperature of the ambient air by the left heat generating unit 805 of the cooking device 3 . The third temperature sensor 802c installed on the right side will be able to respond more quickly to the temperature of the surrounding air by the right heat generating unit 805 .

When the operating condition of the kitchen hood 1 is satisfied, the controller 920 may operate the kitchen hood 1 . If the operating conditions are not satisfied, the standby state can be maintained. [S601: operation condition judgment step]

When the operating condition is satisfied, the controller 920 may receive the temperature measured from the plurality of temperature sensors 802 . The plurality of temperature sensors 802 may measure the ambient temperature of each installed location in real time, and transmit the measured temperature to the control unit 920 , respectively. The first temperature measured by the upper first temperature sensor 802a, the second temperature measured by the second temperature sensor 802b on the lower left surface, and the third temperature sensor 802c on the lower right surface The temperature obtained may be referred to as a third temperature, respectively. [S603: Temperature measurement step]

The controller 920 may determine the air volume according to the temperature difference therebetween. To this end, the controller 920 may compare these temperature differences with a preset reference value. Specifically, the controller 920 may compare the temperature difference between the first temperature and any one of the second temperature and the third temperature with a preset first reference value. [S605: first comparison step]

The controller 920 may not drive the fan motor 907 when the temperature difference is smaller than the first reference value, and thus the fan 300 may not rotate. Since the fan 300 is not rotated, the air volume may not be generated. That the temperature difference is smaller than the first reference value may mean that the difference between the upper air temperature and the lower air temperature is small, which may mean that no heat is generated in the heat generating unit 805 . This is because, when heat is generated in the heat generating unit 805, the lower air temperature increases faster than the upper air temperature, so that the difference between the upper air temperature and the lower air temperature may increase. The first reference value may be a reference value for determining that the lower air temperature has increased. [S607: Fan motor stop step]

Conversely, if the temperature difference is equal to or greater than the first reference value, the controller 920 may mean that the lower air temperature has increased, which may mean that heat is generated in the heat generator 805 . When heat is generated in the heat generating unit 805, it may mean that cooking is performed. In this case, the controller 920 may drive the fan motor 907 to rotate the fan 300 . This can generate wind volume. [S609: Fan motor driving stage]

When the fan motor 907 is driven and the fan 300 rotates, the controller 920 may determine the air volume. In this case, the air volume may be determined by the temperature difference. It may be determined whether the temperature difference is greater than or equal to a first reference value and less than a preset second reference value. [S611: second comparison step]

The controller 920 may generate a larger air volume as the temperature difference increases. The controller 920 may divide and set a plurality of ranges for the temperature difference, and control the fan motor 907 to generate an air volume corresponding to each range. When the temperature difference is equal to or greater than the first reference value and smaller than the second reference value, the control unit 920 may generate a preset first air volume. [S613: First air volume generation step]

If the temperature difference is equal to or greater than the second reference value, the controller 920 may determine whether it is less than the third reference value. This is to generate an air volume corresponding to the temperature difference between the second reference value and the third reference value. [S615: Third comparison step]

When the temperature difference is equal to or greater than the second reference value and smaller than the third reference value, the control unit 920 may generate a preset second air volume. [S617: Second air volume generation step]

Subsequently, when the temperature difference is equal to or greater than the third reference value, the controller 920 may determine whether it is less than the fourth reference value. This is to generate an air volume corresponding to the temperature difference between the third reference value and the fourth reference value. [S619: Fourth comparison step]

When the temperature difference is equal to or greater than the third reference value, the controller 920 may generate a preset third air volume. In an embodiment, the third air volume may be the maximum air volume. The number of these temperature differential ranges can be adjusted. The first air volume may be the maximum air volume, and the second air volume may be the maximum air volume. In the embodiment of the present disclosure, if the temperature difference is equal to or greater than a specific reference value, it can be set to be the maximum air volume. [S621: Third air volume generation step]

When the maximum air volume is reached, the controller 920 may lower the second housing 200 further down from the current position. Preferably, it can be lowered to the lowest position. If it has descended to the current lowest position, the current position can be maintained. When the air volume is the maximum air volume, since the temperature difference between the first temperature and the second or third temperature is relatively large, this may mean that the heat generated by the heat generating unit 805 is stronger. In this case, since it can be determined that cooking is performed with strong heat in the heat generating unit 805, air can be sucked in and discharged with a strong air volume. [S623: second housing lowering step]

Thereafter, the process proceeds to step S603 and the subsequent process may be repeated.

As another embodiment, referring to FIGS. 36 and 43 , when the operating condition of the kitchen hood 1 is satisfied, the controller 920 may operate the kitchen hood 1 . If the operating conditions are not satisfied, the standby state can be maintained. [S701: Operation condition judgment step]

When the operating condition is satisfied, the controller 920 may receive the temperature measured from the plurality of temperature sensors 802 . The plurality of temperature sensors 802 may measure the ambient temperature of each installed location in real time, and transmit the measured temperature to the control unit 920 , respectively. The first temperature measured by the upper first temperature sensor 802a, the second temperature measured by the second temperature sensor 802b on the lower left surface, and the third temperature sensor 802c on the lower right surface The temperature obtained may be referred to as a third temperature, respectively. [S703: Temperature measurement step]

The controller 920 may determine the air volume according to the temperature difference therebetween. The controller 920 may calculate a temperature difference between the first temperature, the second temperature, and the third temperature, and compare the temperature difference with a preset first set value. Specifically, it may be determined whether the first temperature difference of (second temperature - first temperature) and the second temperature difference of (third temperature - first temperature) are both equal to or less than a first preset value. That is, this is the difference (first temperature difference) between the air temperature (second temperature) on the left side and the upper air temperature (first temperature) in the kitchen hood 1 and the air temperature (third temperature) on the right side in the kitchen hood 1 . temperature) and the difference (second temperature difference) between the upper air temperature (first temperature) is to determine whether all of the first set value or less. When both the first temperature difference and the second temperature difference are less than the first set value, it may mean that the temperature difference between the upper part and the left and right sides is not relatively large, and in this case, it means that no heat is generated in the heat generating unit 805 . can do. [S705: first judgment step]

When the first temperature difference and the second temperature difference are equal to or less than the first set value, the control unit 920 may close both the left damper 660L and the right damper 660R formed on the flow passages of the left and right suction ports. Opening and closing of the left damper 660L and the right damper 660R may be performed by the left and right damper driving motors 669L and 669R, respectively, under the control of the controller 920 . This may mean that no heat is generated in the heat generating unit 805 and cooking does not proceed. Therefore, in this case, it may not be necessary to suck in and discharge air, and it may not be necessary to open the left and right dampers 660L and 660R. Then, the process proceeds to step S703 and the subsequent process may be repeated. [S707: Left and right damper closing stage]

If the first temperature difference is greater than the first set value, it may be determined whether the third temperature difference of (second temperature - third temperature) is greater than the second preset value. When the first temperature difference is greater than the first set value, heat is generated in the heat generating unit 805 at the position corresponding to the second temperature sensor 802b, and the ambient temperature on the left side increases. In addition, even when the third temperature difference is greater than the second set value, the left side ambient temperature rises relatively more than the right side ambient temperature, and heat may be generated in the left heat generating unit 805 . Therefore, both of the above two conditions may mean that the ambient temperature on the left side has increased, which may mean that heat will be generated in the left side heat generating unit 805 . [S709: second judgment step]

Accordingly, in this case, the controller 920 drives the left damper driving motor 669L to open the left damper 660L, and the right damper driving motor 669R does not drive the right damper 660R to close it. can be At this time, if the right damper 660R is open, it may be closed by driving the right damper driving motor 669R. Then, the process proceeds to step S703 and the subsequent process may be repeated. [S711: Open only the left damper]

If the second temperature difference is greater than the first set value, it may be determined whether the fourth temperature difference of (third temperature - second temperature) is greater than the second set value. When the second temperature difference is greater than the first set value, heat is generated in the heat generating unit 805 at the position corresponding to the third temperature sensor 802c, and the ambient temperature on the right side rises. And even when the fourth temperature difference is greater than the second set value, the right side ambient temperature rises relatively more than the left side ambient temperature, and heat may be generated in the right heat generating unit 805 . Accordingly, both of the above two conditions may mean that the ambient temperature on the right side has increased, which may mean that heat will be generated in the right side heat generating unit 805 . [S713: Third judgment step]

Accordingly, in this case, the controller 920 drives the right damper driving motor 669R to open the right damper 660R, and the left damper driving motor 669L does not drive the left damper 660L to close it. can be At this time, if the left damper 660L is open, it may be closed by driving the left damper driving motor 669L. Then, the process proceeds to step S703 and the subsequent process may be repeated. [S715: Step to open only the right damper]

If both the first temperature difference and the second temperature difference are greater than the first set value, it may be determined whether either the third temperature difference or the fourth temperature difference is smaller than the second set value. If both the first temperature difference and the second temperature difference are greater than the first set value, both the left and right ambient temperatures have risen, and heat may be generated in both the left and right heat generating units 805 . And when any one of the third temperature difference or the fourth temperature difference is less than or equal to the second set value, it may mean that the changes in the left and right ambient temperatures are substantially the same or there is little difference between the two. This may mean that both the left and right side ambient temperatures rise at the same time, and heat is generated in both the left and right heat generating units 805 . [S717: fourth judgment step]

Accordingly, in this case, the controller 920 may drive both the left damper driving motor 669L and the right damper driving motor 669R to open both the left damper 660L and the right damper 660R. Subsequently, the process proceeds to step S703 and the subsequent process may be repeated. [S719: both left and right dampers open stage]

As described above, in this embodiment, the position where heat is generated in the heat generator 805 is determined using the upper and left and right temperatures measured by a plurality of temperature sensors installed on the upper and left sides, and the left and right dampers 660 corresponding to the positions are determined. By opening the , it is possible to effectively intake and discharge air corresponding to the position of the heat generating unit.

As another embodiment, referring to FIGS. 36 and 44 , the controller 920 may determine whether a steam cleaning mode is input or selected in the kitchen hood 1 . The input of the steam cleaning mode may be performed in various ways. For example, a steam cleaning button displayed on the display 130 may be touched. Alternatively, it may be entered automatically when a preset steam cleaning cycle is reached. Alternatively, it may be automatically input after cooking has progressed for more than a preset time. Alternatively, when a certain amount of air flow exceeds a preset time, it may be automatically input. In this case, when the steam cleaning mode is selectively input, a guide voice indicating that the steam cleaning mode is started may be output. [S801: Steam cleaning mode input step]

When the steam cleaning mode is input, the control unit 920 may drive the lifting motor 453 to lower the second housing 200 to the second position. The second position may be a position suitable for the user to withdraw and withdraw the liquid container 610 disposed inside the second housing 200 . For example, the second position may be the lowest position at which the second housing 200 can descend. In this case, a voice guidance indicating that the second housing 200 is lowered may be selectively output immediately before the second housing 200 is lowered. [S803: second housing lowering step]

When the second housing 200 is lowered to the second position, the control unit 920 may drive the withdrawal motor 911 so that the liquid container 610 is withdrawn to the outside of the second housing 200 . The withdrawal of the liquid container 610 may be detected by the withdrawal/input detection sensor 903 . The withdrawal/input detection sensor 903 may transmit the detection result of the withdrawal of the liquid container 610 to the control unit 920 . At this time, when the liquid container 610 is selectively withdrawn, a voice guidance indicating that the liquid container 610 is withdrawn may be output, or alternatively or additionally, a voice guidance to take out the liquid container 610 and input the detergent solution is output. You may. When the liquid container 610 is withdrawn, the user can fill the inside with water, detergent, chemicals, or cleaning liquid for steam cleaning. [S805: liquid container withdrawal step]

After the user fills the inside of the liquid container 610 , it can be drawn back into the second housing 200 . The draw-in of the liquid container 610 may be detected by the withdrawal/intake detection sensor 903 . The control unit 920 may determine whether the liquid container 610 is drawn in from the withdrawal detection sensor 920 . [S807: Liquid container inlet judgment step]

If the liquid container 610 is not drawn into the second housing 200 for the first preset time, the control unit 920 may request the liquid container 610 to be drawn in. To this end, the controller 920 may determine whether the first time has elapsed since the withdrawal of the liquid container 610 was sensed by the withdrawal/intake detection sensor 903 through the timer 905 . This is to determine whether the first time has elapsed without the control unit 920 detecting the drawn-in of the liquid container 6110 by the withdrawal/intake detection sensor 903 in the state in which the liquid container 610 is withdrawn. [S809: first time lapse determination step]

When it is determined that the first time has elapsed after the withdrawal of the liquid container 610 is sensed, the withdrawal of the liquid container 610 may be requested. The withdrawal request of the liquid container 610 may be performed in several ways. As an example, a request for drawing in the liquid container 610 may be displayed on the display 130 . Alternatively, it is possible to output a voice guidance to draw in the liquid container (610). Alternatively, a buzzer sound may be output in a state in which the liquid container 610) is withdrawn. [S811: Liquid container withdrawal request step]

In step S807, the control unit 920 drives the lifting motor 453) when the withdrawal of the liquid container 6110 is detected by the withdrawal/intake detection sensor 903) to move the second housing 200 to a position for steam cleaning. can elevate The second housing 200 may preferably rise into the interior of the first housing 100 and be completely inserted into the interior of the first housing 100 . [S813: Second housing rising step]

As such, when the second housing 200 rises to the inside of the first housing 100, the control unit 920 controls the steam cleaning assembly 600 included in the second housing 200 so that steam cleaning can be performed. . Steam cleaning may be set to proceed automatically by the steam cleaning assembly 600 . While steam cleaning is in progress, the display 130 may display the steam cleaning progress. Alternatively or additionally, a voice guide informing of the start of steam cleaning and the cleaning time may be output. Since steam cleaning is the same as described above, redundant description is omitted. [S815: Steam cleaning in progress]

Steam cleaning may be performed for a set time. When steam cleaning is started, the controller 920 may determine whether steam cleaning has been performed for a set time by using the timer 905 . [S817: Set time elapsed judgment step]

When the set time has elapsed, the control unit 920 may control the steam cleaning assembly 600 to end steam cleaning. Contaminants generated by steam cleaning while steam cleaning is in progress may be recovered to the liquid container 610 . At this time, optionally, when the steam cleaning is completed, a voice guidance informing that the steam cleaning is completed may be output. [S819: Steam cleaning end stage]

When steam cleaning is finished, it is necessary to empty the contaminants recovered to the liquid container 610 , and for this purpose, it is necessary to withdraw the liquid container 6110 from the second housing 200 . Accordingly, the control unit 920 may drive the lifting motor 453 to lower the second housing 200 . The second housing 200 may preferably be lowered to the second position. The second position may be a lowermost position. At this time, optionally, a voice guidance indicating that the second housing 200 is lowered before the lowering of the second housing 200 may be output. [S821: second housing lowering step]

When the second housing 200 is lowered to the second position, the control unit 920 may drive the withdrawal motor 911 so that the liquid container 610 is withdrawn to the outside of the second housing 200 . The withdrawal of the liquid container 610 may be detected by the withdrawal/input detection sensor 903 . The withdrawal/intake detection sensor 903 may transmit the detection result of the withdrawal of the liquid container 610 to the control unit 920 . At this time, when the liquid container 610 is selectively withdrawn, a voice guidance indicating that the liquid container 610 has been withdrawn may be output, or alternatively or additionally, a voice guidance to empty the liquid container 610 may be output. When the liquid container 610 is withdrawn, the user may empty the contaminants recovered in the liquid container 610 . [S823: liquid container withdrawal step]

After emptying the inside of the liquid container 610 , the user may introduce it back into the second housing 200 . The draw-in of the liquid container 610 may be detected by the withdrawal/intake detection sensor 903 . The control unit 920 may determine whether the liquid container 610 is drawn in from the withdrawal detection sensor 920 . [S825: Liquid container inlet judgment step]

The controller 920 may determine whether the first time has elapsed without the liquid container 610 being introduced. The control unit 920 determines whether the liquid container 610 is not drawn in within the first time from the withdrawal/intake detection sensor 903 through the timer 905 . [S827: First time lapse determination step]

When the first time elapses after the withdrawal of the liquid container 610 is sensed, the withdrawal of the liquid container 610 may be requested. As an example, the display 130 may display a request for drawing in the liquid container 610 or output a guide voice for drawing in the liquid container 610 . Alternatively, a buzzer sound may be output in a state in which the liquid container 610) is drawn out. [S829: Liquid container withdrawal request step]

In step S825, the control unit 920 may drive the lifting motor 453) when the withdrawal of the liquid container 6110 is detected by the withdrawal/intake detection sensor 903) to raise the second housing 200. The second housing 200 may preferably rise into the interior of the first housing 100 and be completely inserted into the interior of the first housing 100 . [S831: Second housing rising step]

When the second housing 200 rises into the interior of the first housing 100 , it is necessary to remove the moisture attached to the interior of the first housing 100 and the second housing 200 . To this end, the control unit 820 may drive the fan motor 907 to rotate the fan 300 to generate an air volume exceeding a certain level. The inside of the first and second housings 100 and 200 may be dried by this air volume. At this time, optionally, when the fan 300 is rotated, it is also possible to output a guide voice indicating that internal drying is started. This guidance sound may include drying time. [S833: Fan motor driving stage]

This internal drying process may be performed for a set time. When the rotation of the fan 300 is started by the driving of the fan motor 907 , the controller 920 may determine whether the internal drying process has been performed for the second time using the timer 905 . [S835: Set time elapsed judgment step]

When it is determined that the drying process has been performed for the second time, the control unit 920 stops the driving of the fan motor 907 to prevent the fan 300 from rotating. The drying process can thereby be ended. In this case, when drying is optionally completed, a guide sound indicating the end of drying may be output. [S837: Drying end stage]

Through the above-described process, the liquid container 610 is filled with detergent water, steam cleaning is automatically performed, and when steam cleaning is completed, the process of drying the inside after emptying the contaminants recovered in the liquid container 610 can be performed. there is. The liquid container 610 is filled with the detergent solution and the second housing 200 is lowered to empty the contaminants so that the liquid container 610 is automatically drawn out of the second housing 200, and the liquid container 610 is When the second housing 200 is drawn into the interior, the second housing 200 may be automatically raised.

In the above, even though it has been described that all components constituting the embodiment of the present disclosure operate as one combined or combined, the present disclosure is not necessarily limited to this embodiment. That is, within the scope of the object of the present disclosure, all of the components may operate by selectively combining one or more.

1: kitchen hood 100: first housing
110: outer housing 111: door
112: protrusion (seal) 112a: opening
112b: space 113: latch
114: hinge 116: front panel (end plate)
117: upper panel (upper plate) 118: side panel (side plate)
119: lower panel (lower plate 119a: lower opening
120: inner housing 121: outer wall
122: inner wall 130: display
131: printed circuit board 132: LED
133: through hole 140: first housing upper frame
140a: upper opening 141: first upper frame
141a: opening 142: second upper frame
142a: opening 152: flange
152a: hook 160,160': tip inner case
161: support jaw 161a: support protrusion
162: chin 165: cover
165a: sweeper opening 165b: opening
200: second housing 200h: drain hole
200w: steam window 210: suction grill
210a: opening 220: front plate
221: handle 230: door
231: bar 232: upper jaw
240: second housing upper frame 241: first upper frame
242: second upper frame 250: rear plate
260: front plate 300: fan
300a: fan hole 310: fan housing
400: sliding assembly 410, 410': first rail
420, 420': second rail 450: drive assembly
451: rack 452: gear
452a: gear cover 453: elevating motor
454: housing 500: sensor assembly
510a: first molecular pathway pathway 510b: second molecular pathway pathway
510c: third molecular pathway pathway 520a: first sensor
520b: second sensor 520c: third sensor
530: printed circuit board 600: steam cleaning assembly
610: liquid container 610a: first barrel
610b: second barrel 611: container guide
611": vessel frame 612, 612': steam generator (heater)
613: tip frame 614: lead
614a: guide 614b: opening
615,615': seal 615": seal
617: opening 617a: opening
650: condensate collector 650a: opening
651: tab (plate) 652: curved portion
652R: Right curved part 652L: Left curved part
652a: groove 653: front plate and rear plate
653a: front plate 653b: rear plate
653c: sidebar 655: bottom plate
654: side plate 660: damper
660L: Left damper 660R: Right damper
660a: hinge 661: gear
661L: Left gear 661R: Right gear
662: damper assembly 662F: end wall
662R: rear end wall 662a: first condensate passage
663: liquid guide 663a: second condensate passage
664: inner wall 665: inner wall
666: exterior wall 667: exterior wall
668: rack 668L: left rack
668R: Right rack 670, 670': Steam distributor
671: tube 672: nozzle
673: first main pipe 673': second main pipe
674: auxiliary pipe 675: wiper
676: contact piece 677: inclined surface
677': ditch 680a: rail
680b: rail 669L: left damper drive motor
669R: right damper driving motor 700: sensor assembly
701: proximity sensor 702: water level sensor
703: lighting 703a: light-emitting diode
704: cover 705: sensor mount
800: fire emergency assembly 801: distance sensor
802: temperature sensor 802a: first temperature sensor
802b: second temperature sensor 802c: third temperature sensor
810: nozzle 820: fire detector
900: sweeping assembly 901: operation unit
903: withdrawal/input detection sensor 905: timer
907: fan motor 910: sweeper
911: draw-out motor 913: voice output unit
915: memory 917: communication unit
920: upper header 930: lower header

Claims (21)

a first housing;
a second housing configured to move vertically with respect to the first housing;
a fan positioned inside the first housing to suck air;
an inlet formed in the second housing and through which air is sucked;
an outlet formed in the first housing and through which air is discharged;
a steam cleaning assembly positioned within the second housing and configured to generate and distribute steam;
The steam cleaning assembly includes a container having a first part and a second part, a heater for heating the liquid in the first part to generate steam, a steam distributor having a nozzle for spraying the steam generated by the heater, steam and a condensate collector for guiding condensate containing foreign substances separated by
The steam distributor is a kitchen hood including a first main pipe positioned above the condensate collector of the second housing and a second main pipe positioned at an inner upper end of the second housing.
The kitchen hood according to claim 1, wherein the first main pipe and the second main pipe are connected to each other by an auxiliary pipe.
The kitchen hood according to claim 2, wherein the nozzle is formed on at least one of a surface facing the inner surface of the second housing and a surface opposite to the surface of the first main pipe, the second main pipe, and the auxiliary pipe.
The kitchen hood according to claim 2, wherein the steam generated by the heater is transmitted through a tube directly connected to at least one of the first main pipe, the second main pipe, and the auxiliary pipe.
The method of claim 1, wherein the condensate collector comprises:
a front plate having an upper portion and a lower portion;
a rear plate having an upper portion and a lower portion and coupled to the inner surface of the housing together with the front plate; And
and a plurality of tabs positioned between the front plate and the rear plate and configured to guide condensate downward.
According to claim 1, wherein a wiper is provided between the outer surface of the second housing and the inner surface of the first housing to block leakage of steam through between the first housing and the second housing, the tip of the wiper is made of an elastic material A kitchen hood that is provided with a close-fitting piece made of
The method of claim 6, wherein the wiper is installed on the outer surface of the second housing, and an inclined surface is formed on the upper surface of the wiper to be inclined downward toward the outer surface of the second housing, and the inclined surface is also directed toward the drain formed in the wiper. Down-sloping kitchen hood.
The kitchen hood according to claim 7, wherein a drain hole for guiding condensed water to the condensate collector is formed in the second housing corresponding to the drain passage.
housing;
a fan provided inside the housing to suck air;
an inlet formed in the housing and sucking air;
an outlet formed in the housing and through which air is discharged; And
a steam cleaning assembly positioned within the housing and configured to generate steam and distribute the steam to the interior of the housing;
The steam cleaning assembly comprises:
a container having first and second portions in which liquid is stored and configured to be separated from the housing;
a heater configured to heat the liquid in the first portion to generate steam;
a steam distributor having a first main pipe having a nozzle for spraying steam and positioned inside the housing, and a second main pipe spaced upward from the first main pipe and having a nozzle for spraying steam; And
and a condensate collector located on the top of the vessel and configured to direct condensate of steam to a second portion of the vessel.
10. The device of claim 9, wherein the housing includes a first housing and a second housing configured to move relative to the first housing, the fan coupled to the first housing, and the outlet formed in the first housing. and the inlet is formed in the second housing, and the steam cleaning assembly is located in the second housing.
11. The method of claim 10, wherein a wiper is provided between the outer surface of the second housing and the inner surface of the first housing to block the steam leakage through between the first housing and the second housing, the tip of the wiper is made of an elastic material A kitchen hood that is provided with a close-fitting piece made of
The method of claim 11, wherein the wiper is installed on the outer surface of the second housing, and an inclined surface is formed on the upper surface of the wiper to be inclined downward toward the outer surface of the second housing. Down-sloping kitchen hood.
The kitchen hood of claim 12 , wherein a drain hole for guiding condensed water to the condensate collector is formed in the second housing corresponding to the drain passage.
The kitchen hood according to claim 9, wherein the inlet is covered by a suction grill.
The kitchen hood according to claim 9, wherein the container is configured to slide horizontally from the front end of the housing.
10. The hood of claim 9, further comprising a frame positioned between said condensate collector and said container, said frame defining a passageway for guiding condensate from a lower portion of the condensate guide to a second portion of the container.
a first housing;
a second housing configured to move vertically with respect to the first housing;
a fan positioned inside the first housing to suck air;
an inlet formed in the second housing and through which air is sucked;
an outlet formed in the first housing and through which air is discharged;
a steam cleaning assembly positioned within the second housing and configured to generate and distribute steam;
A kitchen hood comprising a; a wiper positioned between the outer surface of the second housing and the inner surface of the first housing to prevent steam leakage through the second housing and the first housing.
The kitchen hood according to claim 17, wherein a contact piece made of an elastic material is provided at the tip of the wiper to be in close contact with the inner surface of the first housing.
19. The method of claim 18, wherein the wiper is installed on the outer surface of the second housing, and an inclined surface is formed on the upper surface of the wiper to be inclined downward toward the outer surface of the second housing, and the inclined surface is also directed toward the drain formed in the wiper Down-sloping kitchen hood.
The kitchen hood according to claim 19, wherein a drain hole for guiding condensed water to the condensate collector is formed in the second housing corresponding to the drain passage.
18. The method of claim 17, wherein the steam cleaning assembly comprises a container having a first part and a second part, a heater for heating the liquid in the first part to generate steam, and a nozzle for spraying the steam generated by the heater. and a condensed water collector for guiding condensed water containing foreign substances separated by steam and delivering it to the second portion of the container, wherein the steam distributor is a first located above the condensate collector of the second housing A kitchen hood comprising a main pipe and a second main pipe positioned on the upper inner portion of the second housing.

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