KR20220035701A - Kitchen hood and control method thereof - Google Patents

Abstract

The kitchen hood of the present disclosure includes a first housing and a second housing that is lifted and slid in and out of the first housing, and a heating element is disposed on at least one side of the second housing so that the heating element generates heat when a preset heating condition is met, thereby heating the inside. Oil stains are removed and returned to the liquid container, and when the capacity of the liquid container reaches the critical capacity, the liquid container can be withdrawn and the liquid can be emptied.

Description

Kitchen hood and control method thereof {Kitchen hood and control method thereof}

This disclosure relates to a kitchen hood and its control method.

Cooking often causes the release of harmful smoke, gases, oils or pollutants into indoor air. Many kitchens have a kitchen hood installed above the stove to exhaust residual contaminants, but if not properly maintained, the efficiency of the kitchen hood decreases, increasing the amount of harmful contaminants remaining in the kitchen.

If the kitchen hood is not operating properly, harmful substances generated during cooking, such as fine dust, oil mist, carbon monoxide, nitrogen dioxide, formaldehyde, volatile organic compounds, black carbon, and polycyclic aromatic hydrocarbons, may be emitted during cooking. The substance can spread throughout the kitchen.

In the kitchen, initial particles of approximately 15 to 40 nm in size (e.g., volatile organic compounds and harmful substances such as nitrogen dioxide) are generated during cooking, and the size of these particles becomes fine when combined with moisture, oil, etc. Let it create dust.

Harmful gases generated during cooking are coated with oil vapor or mist. Once oil vapor containing harmful gases accumulates indoors, it solidifies and is not easily removed and stays indoors for a long time. This can cause bad odor and reduce the efficiency of the hood.

KR 2017-0085631 A1 discloses a range hood that improves the quality of kitchen air by removing waste oil caused by oil vapor that contaminates the range hood. Install an oil collection tray to collect oil and keep the kitchen clean by emptying the oil collection tray when it collects more than a certain amount.

KR 10-1533798 B1 discloses a kitchen hood that improves the removal effect of foreign substances such as oil vapor, odor, smoke, and harmful components contained in exhaust gases generated in the process of cooking food. These kitchen hoods are equipped with a purification chamber with a built-in catalytic filter, and the exhaust gas flowing into the gas passage is submerged in water to remove foreign substances.

In addition to these prior literature, conventional kitchen hoods must be separately equipped with filters or water to remove harmful gases or foreign substances contained in the sucked air, and the process of moving to the filter or water and even if it passes through them are to prevent grease from attaching to the inner wall. There is a problem that it cannot be completely blocked, and once the oil solidifies on the inner wall, it is difficult to remove.

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

(Prior document 1) KR 2017-0085631 A1 (Prior document 2) KR 10-1533798 B1

The purpose of the present disclosure is to provide a kitchen hood that can remove grease adhering to the inner surface. This kitchen hood raises the internal temperature to melt solidified grease and returns it to the liquid container at the bottom, allowing grease to be removed.

The purpose of the present disclosure is to provide a kitchen hood that automatically increases the internal temperature when a preset heating condition is satisfied. This kitchen hood converts oil stains into oil vapor as the internal temperature rises, allowing for effective recovery.

The purpose of the present disclosure is to provide a kitchen hood that displays information related to the operation of the kitchen hood on a display or facilitates user operation through a control panel. The kitchen hood may have a user interface.

The purpose of the present disclosure is to provide a kitchen hood that allows the liquid container to be removed and emptied when the amount of residue, such as grease, recovered in the liquid container exceeds a certain amount. This kitchen hood detects the capacity of the liquid in the liquid container and can withdraw the liquid container when it reaches a critical capacity so that the remaining residue inside can be emptied.

The purpose of the present disclosure is to provide a kitchen hood that can automatically withdraw a liquid container from a second housing. When the liquid container exceeds a certain capacity, the second housing can be lowered and the liquid container can be automatically withdrawn using a withdrawal motor.

The purpose of the present disclosure is to provide a kitchen hood that can output a voice guidance to guide each step of the process for removing grease. This kitchen hood may have a voice output unit capable of outputting a guidance voice.

In the kitchen hood of the present disclosure, the second housing can be lifted into and out of the first housing. Inlet ports are formed on the lower left and right sides of the second housing, so that air can be sucked in from the outside through the inlet ports. An intake grill may be installed at the intake port to filter out contaminants contained in the intake air.

The kitchen hood of the present disclosure may have an outlet formed at the top of the first housing. Air sucked in through the intake port may be discharged to the outside through the outlet port. A fan may be disposed on the inner upper portion of the first housing. Air can be sucked in from the outside through the intake port as the fan rotates. The sucked air rises through the inside of the second housing and the inside of the first housing toward the fan at the top and can be discharged through an outlet formed at the top. The fan may be rotated by a fan drive motor.

The kitchen hood of the present disclosure may have a heating element capable of generating heat attached or installed on at least one side of the second housing. When the preset heating condition is satisfied, the heating element generates heat, thereby increasing the internal temperature of the first housing and the second housing. Due to this temperature rise, the oil stains present inside can be melted and recovered into a liquid container.

The kitchen hood of the present disclosure can determine that the heating condition is satisfied when the fan stops after rotating and cause the heating element to generate heat, or when a preset heating cycle is reached, it can determine that the heating condition is satisfied and cause the heating element to generate heat. Alternatively, when the heating mode is selected or input by a user operation on the control panel, it is determined that the heating condition is satisfied and the heating element can be made to generate heat.

The kitchen hood of the present disclosure includes a first housing, a second housing formed to be vertically lifted into and out of the first housing, a heating element installed on at least one side of the second housing, a driving unit that operates to generate heat from the heating element, and a second housing. A lifting motor that operates to raise and lower a fan, a fan installed inside the first housing and rotating, an intake port formed in the second housing and formed to suck air from the outside by rotation of the fan, and one side of the first housing. It is formed in and includes an outlet through which the sucked air is discharged, and a control unit that operates a lifting motor and a driving unit. When a preset heating condition is reached, the control unit operates the lifting motor to raise the second housing and operates the driving unit to raise the heating element. It can cause fever.

In the kitchen hood of the present disclosure, the control unit determines whether a preset heat generation condition has been reached, and when it is determined that the heat generation condition has been met, the kitchen hood of the present disclosure controls the heating element installed on at least one side of the second housing disposed inside the first housing to generate heat, and the heating element After the preset heating time has elapsed, the heating element can be controlled to stop generating heat.

The kitchen hood of the present disclosure can display the operating state of the kitchen hood on a display and output a guidance sound according to the operating state.

The kitchen hood of the present disclosure may include a liquid container disposed inside the bottom of the second housing to recover oil vapor that falls due to heat generation from the heating element. When the heating element generates heat and the internal temperature rises, the solidified oil can be converted into oil vapor and fall downward to be recovered in the liquid container.

The kitchen hood of the present disclosure detects the capacity of the stored product in the liquid container with a capacity detection sensor, and when the measured capacity of the liquid container reaches a preset critical capacity, the lifting motor is driven to lower the second housing. When the second housing is lowered, take out the liquid container and empty the grease inside.

The kitchen hood of the present disclosure is capable of detecting the inflow and outflow of the liquid container into and out of the second housing with a withdrawal detection sensor, and when the measured capacity of the liquid container is the critical capacity, the liquid container can be detected within a certain time after the second housing is lowered. If withdrawal of the container is not detected, a voice guidance can be output to request withdrawal.

The kitchen hood of the present disclosure may output a voice guidance for a withdrawal request if the second housing is lowered and the withdrawal of the liquid container is not detected within a set time after the withdrawal of the liquid container is detected.

The kitchen hood of the present disclosure can raise the second housing into the first housing by operating a lifting motor when the second housing is lowered and the withdrawal and introduction of the liquid container is detected within a set time.

The kitchen hood of the present disclosure includes a draw-out motor that draws in and out the liquid container into and out of the second housing, and when the measured capacity of the liquid container is the critical capacity, when the second housing is lowered, the pull-out motor is operated to draw the liquid container. It can be pulled out to the outside of the second housing.

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

In the kitchen hood of the present disclosure, the fan is rotated to suck in outside air through the intake port and discharged to the outside, and when the outside air is sucked, contaminants contained in the air are filtered through the suction grill, thereby performing an air purification function. .

In the kitchen hood of the present disclosure, grease stains attached or solidified on the inner surface of the housing are melted and collected in a liquid container, making it easy to remove grease stains.

In the kitchen hood of the present disclosure, a heating element is attached to at least one side of the second housing, so that the heating element generates heat when a heating condition is reached, thereby increasing the internal temperature. Oil stains can be easily melted by increasing the internal temperature.

In the kitchen hood of the present disclosure, when the volume of grease recovered from the liquid container exceeds a certain amount, the second housing can be lowered to empty the inside and a guidance voice can be output to guide the withdrawal of the liquid container, so that the user can empty the liquid container. can be easily seen.

The kitchen hood of the present disclosure allows the liquid container to be automatically withdrawn from the second housing so that the user can easily empty the liquid container.

In the kitchen hood of the present disclosure, if the liquid container is not re-introduced within a certain period of time after being withdrawn, a voice guidance sound is output to request re-introduction, so the user can confirm this and insert the liquid container.

In the kitchen hood of the present disclosure, the user can set and change the heating temperature of the heating element, or automatically generate heat at a default preset heating temperature when the heating conditions are met, providing convenience of use.

1 is a front view of a kitchen hood according to an embodiment of the present disclosure installed in a kitchen.
Figure 2 is a lateral perspective view showing the kitchen hood shown in Figure 1 in a partially extended state.
Figure 3 is a lateral perspective view showing the kitchen hood shown in Figure 1 fully extended.
Figure 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 interior of the kitchen hood and air flow.
Figure 5 is a perspective view of a kitchen hood showing a display.
Figure 6 is a perspective view showing the kitchen hood shown in Figure 5 in an extended state.
Figure 7 is an exploded perspective view showing the inner cases of the first housing and the second housing forming a kitchen hood.
Figure 8 is an exploded perspective view of a kitchen hood showing a sliding assembly and a steam cleaning assembly.
Figure 9 is an exploded perspective view of the sliding assembly.
Figure 10 is a front cross-sectional view of the first housing and the second housing in an unextended state.
Figure 11 is a front cross-sectional perspective view of the first housing and the second housing in an extended state.
Figure 12 is a conceptual diagram showing the movement of oil vapor when a heating element generates heat.
Figure 13 is a perspective view of a liquid container in a state in which oil stains have been recovered.
Figure 14a is a side cross-sectional view of a liquid container showing a withdrawal detection sensor according to an embodiment.
Figure 14b is a side cross-sectional view of a liquid container showing a withdrawal detection sensor and a withdrawal motor according to another embodiment.
Figure 15 is a block diagram of components connected to a control unit that controls a kitchen hood.
16 to 20 are flowcharts showing a kitchen hood control method according to the disclosed embodiments.

Hereinafter, embodiments of the present disclosure will be described in detail through illustrative drawings.

Referring to FIGS. 1 to 3 , a kitchen hood 1 according to an 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 casing 100 having a rectangular parallelepiped shape.

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

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

The second housing 200 may include an intake grill 210 through which external air is sucked. The vertical lifting movement of the second housing 200 can adjust the height of the suction grill 210.

The kitchen hood 1 can be installed on top of a cooking device such as a range, induction stove, or cooktop. The second housing 200 is partially or entirely extended from the inside of the first housing 100 to the outside so that the suction grill 210 is close to the cooking device located below or cooking utensils such as pans, pots, bowls, etc. placed in the cooking device. may descend.

The second housing 200 may be partially or entirely raised from the outside of the first housing 100 to the inside. The distance between the suction grill 210 and the cooking device and/or cooking utensil may be adjusted by vertically raising and lowering the second housing 200. The second housing 200 may be completely raised into the first housing 110 .

The lifting movement of the second housing 200 can be controlled manually by the user or automatically when preset conditions are met.

The lowering position of the second housing 200 may vary depending on the state of the surrounding air, such as temperature, fine dust, odor, etc. of the surrounding air, and/or the state of the cooking device, such as whether or not cooking is performed in the cooking device. . The kitchen hood 1 may include a sensor (not shown) that measures the condition of the surrounding air and a detection unit (not shown) that detects the state of cooking.

For example, when the surrounding air is relatively clean, the second housing 200 may have a relatively higher height (as illustrated in FIG. 2). This may be a case where only a portion of the first housing 100 is lowered. The position where the second housing 200 is only partially lowered may be referred to as the first position.

As another example, when the surrounding air is relatively polluted, the second housing 200 may have a relatively low height (as illustrated in FIG. 3). This may be the case where most of the components have descended to the outside of the first housing 100. The position where the second housing 200 is mostly lowered may be referred to as the second position, and the second position may be relatively lower than the first position.

In the case of FIG. 3, more of the suction grill 210 is exposed compared to FIG. 2, so that more contaminants (eg, harmful gases, oil mist, and/or fine dust) in the surrounding air can be inhaled.

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, back, left, and right sides with respect to the user facing the kitchen hood 1.

The second housing 200 may have a shorter length in the front-to-back and left-right directions than the first housing 100 so that it is stably coupled to the inside of the first housing 100 and slides in and out to be lifted up and down in the vertical direction.

The suction grill 210 may be located on the left side surface and/or the right side surface of the second housing 200. Preferably, it can be located on both the left and right sides. 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.

Referring to FIGS. 4A to 7 , the fan 300 may be located within a portion of the upper portion of the first housing 100 such that it is located on top of the suction grill 210 . As the fan 300 rotates, air may be sucked into the second housing 200 from the outside through the suction grill 210. The sucked air rises toward the fan 300 through the second housing 200 and the first housing 100 and may be discharged to the outside through the top or back of the kitchen hood 1.

The first housing 100 may include a display 130 configured to display the operation and status of the kitchen hood 1. In one embodiment, the display 130 may display a user interface (UI: User Interface) or a graphical user interface (GUI: Graphic User Interface) related to the operation of the kitchen hood 1.

For example, the display 130 may be a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, 3 It may include at least one of 3D displays.

In another embodiment, the display 130 may be formed integrally with a control panel or input device that inputs a user's manipulation. In this case, the display 130 may be implemented as, for example, a touch pad or a touch screen.

For example, when the display 130 and a touch sensor that detects a touch operation form a layered structure to form a touch screen, the display 130 can be used as an input device in addition to an output device. For example, the touch sensor may have the form of a touch film, touch sheet, or touch pad.

By inputting or selecting a user operation by touching the control panel, the kitchen hood 1 can be operated and information according to the operation of the kitchen hood 1 can be displayed.

For example, the display 130 includes a power button for turning on/off the power of the kitchen hood 10, a lift button for manipulating the manual raising and lowering of the second housing 120, an air volume button for adjusting the air volume, and a steam cleaning button. At least one such as a steam cleaning button for cleaning, a liquid container exchange button for replacing the liquid container to be described later, a heating mode button or grease removal button for generating heat to the heating element to remove internal grease, and a temperature button for adjusting the heating temperature. More buttons may be displayed.

Alternatively or additionally, the display 130 may be further equipped with a voice output unit that outputs voice. The voice output unit can guide the user to necessary information or request an operation by outputting a preset guidance voice when a preset condition is met. For example, the audio output unit may be implemented as a speaker.

Openings 210a that can accommodate the suction grill 210 may be formed on the left and right sides of the second housing 200 so that the suction grill 210 is coupled to the second housing 200. This opening 210a may be an intake port that allows air to be sucked from the outside into the second housing 200 by the rotation of the fan 300.

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

The intake grill 210 may be mounted to cover the intake port and may have a structure that filters contaminants in the air sucked in from the outside. The suction grill 210 may be released and separated from the second housing 200 for cleaning or repair.

The second housing 200 may include a heating element 270 installed on at least one side to remove internal grease. The heating element 270 may include a substance or material that generates heat when current is applied. The driving unit 612, which will be described later, may operate to apply current to the heating element 270 under the control of the control unit 920.

The heating element 270 may be made of copper, carbon fiber, ITO, etc., and may be formed in the form of a line, surface, strip, or thin film, and may be installed or attached to at least one side of the front or rear of the second housing 200. You can. Alternatively, it may be installed on at least one side of the first housing 100.

When the heating element 270 generates heat, the internal temperature of the first housing 100 and the second housing 200 increases, and as a result, oil stains existing inside can be removed. Grease solidifies at room temperature, but at high temperatures it may melt and fall to the bottom. Depending on the internal temperature, oil stains may be converted into oil vapor and fall to the bottom.

The control unit 920 may operate the driving unit 612 so that the heating element 270 generates heat when a preset heating condition is satisfied. For example, the control unit 920 may operate the driving unit 612 when the kitchen hood 1 is stopped after operating, a preset heating cycle arrives, or a heating mode is selected on the operating unit.

Throughout the present disclosure, the fact that the heating element 270 generates heat or that the control unit 920 causes the heating element 920 to generate heat means that the control unit 920 operates the driving unit 612 to cause the heating element 270 to generate heat. Let it be revealed.

The second housing 200 may include an opening 112b formed on one upper side. Devices (eg, fan 300) inside the first housing 100 can be repaired and/or replaced by opening a door installed in the first housing 100 and operating through the opening 112b.

The second housing 200 may include a container passage 220a into which the liquid container 610 is inserted. The liquid container 610 may be drawn in and out of the second housing 200 through the container passage 220a. The liquid container 610 can be withdrawn when the second housing 200 is lowered.

The second housing 200 may include a door or cover 220 (front plate) with a handle 221 (eg, a push button or groove). The cover 220 may be separated from the second housing 200 to expose the container passage 220a into which the liquid container 610 is inserted. The cover 220 may be located on the front of the lower housing 200.

Referring to FIGS. 8 to 11, the second housing 200 can be vertically slid into and out of the first housing 100 through the sliding assembly 400.

The sliding assembly 400 may include at least one first rail 410 located on the inner surface of the first housing 100 and at least one second rail 420 located on the outer surface of the second housing 200. You can. The second rail 420 may slide into or out of a groove, slot, or guide formed in the first rail 410.

The sliding assembly 400 includes a drive assembly 450 (e.g., a motor, an actuator, a pneumatic or hydraulic pump, or a rack and pinion) for automatically lifting the second housing 200 relative to the first housing 100. may include.

The sides of first housing 100 may define an upper opening. The upper opening may be at least partially covered by the first upper frame 141 and the second upper frame 142 coupled to the upper part of the first housing 100.

The first and second upper frames 141 and 142 may include openings 141a and 142a, respectively. These openings 141a and 142a may be aligned to form an upper opening 140a, and the sucked air may be discarded or discharged through the upper opening 140a.

The fan 300 may be located within the fan housing 310 and may be rotated by a fan motor (not shown) installed inside the fan housing 310. The fan housing 310 may be configured to guide air to be discharged upward from the fan 300.

The second housing 200 may define an upper opening. The first upper frame 241 and the second upper frame 242 may be coupled to the upper part of the second housing 200.

The second housing 200 may include a steam cleaning assembly 600 to discharge steam for cleaning the interior of the kitchen hood 1. The steam cleaning assembly 600 may include a liquid container 610 into which detergent liquid such as water, detergent, chemicals, or cleaning liquid can be inserted.

The detergent liquid inside the liquid container 610 may be heated by a steam generator (not shown) to generate steam. For internal cleaning, steam may be delivered to the steam distributor 670 located inside the first housing 100 through the tube 671. Residue, condensate, or oil stains (oil vapor) generated during steam cleaning may be guided back to the liquid container 610.

Additionally, oil that melts and falls down due to the heat generated by the heating element 270 can be recovered in the liquid container 610. Depending on the heating temperature, oil stains may be converted into oil vapor and flow into the liquid container 610. When the liquid container 610 is filled with more than a certain amount of grease, the liquid container 610 can be separated from the second housing 200 and the grease can be emptied.

The liquid container 610 can be drawn in and out through the container guide 611 formed on the bottom of the second housing 200. The container guide 611 may be a rectangular frame defining a container passage 220a into which the liquid container 610 is inserted.

The steam cleaning assembly 600 may include a condensate guide 650 to guide the return to the liquid container 610 to collect residue, condensate, grease, and oil vapor. The left and right sides of the condensate guide 650 may have a general inward slope from top to bottom to guide the downward flow and return of liquid to the liquid container 610.

The front plate and rear plate 653 of the condensate guide 650 may be coupled to the inner surface of the second housing 200. The left and right sides of the condensate guide 650 may include a plurality of tabs 651 spaced apart from each other along a general slope defined by the condensate guide 650. Tabs 651 may resemble stairs.

Damper assembly 662 may be located below the condensate guide 650. This damper assembly 662 may include a damper 660 and a gear 661 that rotates the damper 660. The gear 661 may be operated by a damper driving motor (not shown) installed inside the damper assembly 662. The first condensate passage 662a may be located inside the damper assembly 662.

The bottom plate 655 of the condensate guide 650 may be positioned at the top of the damper assembly 662 to close the upper opening of the damper assembly 662. The bottom plate 655 may have an opening 650a aligned with the first condensate passage 662a. The bottom plate 655 may be inclined or curved to guide condensate toward the opening 650a so that the condensate and/or oil vapor falls into the first condensate passage 662a and ultimately goes to the liquid container 610.

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

The inner surface of the second housing 200 may include a curved portion 652 that is curved inward at the lower part of the condensate guide 650 on the left and right sides. The curved portion 652 may have an inward curved surface or an inclination from the top to the bottom so that misdirected condensate is guided downward.

The damper 660 may be configured to open and close the suction passage defined between the left and right sides of the steam cleaning assembly 600 and the second housing 200. The damper 660 can open and close a portion of the passage through which air sucked through the suction grill 210 rises and is discharged through the upper part of the kitchen hood 1.

The suction grill 210 may be located on the sides (eg, left side and right side) of the second housing 200 and a portion of the lower surface extending from these sides to the lower surface. The suction grill 210 may be formed of a plurality of curved or semi-cylindrical slats or tabs aligned in a vertical direction.

The lower part of the second housing 200 may include a lighting assembly 700 for illuminating light below the kitchen hood 1. The lighting assembly 700 may manually illuminate light for the user, or may automatically illuminate light when certain conditions are met.

The drive assembly 450 may include a lifting motor 453 configured to lift the second housing 200. The lifting motor 453 may include, for example, an actuator, hydraulic or pneumatic pump, etc. The lifting motor 453 can rotate the shaft or pinion coupled to the gear 452. The elevation of the second housing 200 may be determined depending on the rotation direction of the elevation motor 453.

The control unit 920 may operate the lift motor 453 to lift the second housing 200. Throughout the present disclosure, the fact that the second housing 200 is raised or lowered or that the control unit 920 raises the second housing 200 means that the control unit 920 operates the lift motor 453 to lift the second housing 200. Let us clarify that this means that it is to be elevated.

When the heating element 270 generates heat above a certain temperature, oil stains and/or oil vapor may fall downward, and the condensate collector 650 can capture such oil stains and/or oil vapor. The bottom plate 655 of the condensate collector 650 may cause residue, condensate, grease, and/or oil vapor to fall downward and enter the liquid container 610.

Figure 12 conceptually illustrates the movement of oil vapor 690 when heat is generated in the heating element 270. When the heating element 270 is heated to a temperature above a certain level, the oil inside is melted and converted into oil vapor 690, and some of it is discharged through the upper opening 141a, and most of it falls to the bottom and flows into the liquid container (650) through the condensate collector 650. 610).

Referring to FIGS. 13 to 14B, the liquid container 610 may include a capacity detection sensor 702 that detects the capacity of the liquid (eg, residue, condensate, grease, or oil vapor) inside. The capacity detection sensor 702 is at least one of, for example, a water level detection sensor 702a that detects the level of liquid inside the liquid container 610, or a weight detection sensor 702b that detects the weight of the liquid container 610, as another example. It can contain one.

The control unit 920 can obtain the capacity of the liquid inside the liquid container 610 from the water level measured by the water level sensor 702a, and/or obtain the capacity of the liquid inside the liquid container 610 from the weight measured by the weight detection sensor 702b. You can. When the capacity of the liquid exceeds a certain amount, the user can be notified through the display 130 to empty the liquid container 610.

The liquid container 610 may be a rectangular container (or alternatively a cylindrical container) with an upper opening, and may be slid in and out of the container guide 611 and automatically or manually drawn in and out of the second housing 210. there is.

For example, in manual withdrawal, the user can slide the liquid container 610 from the container guide 611 by pushing or pulling the handle 221 of the cover 220 (FIG. 14a).

As another example, the liquid container 610 that is automatically withdrawn and retracted may be withdrawn and withdrawn by sliding in and out of the second housing 200 by the withdrawal motor 620. The control unit 920 can operate the withdrawal motor 620 to withdraw and withdraw the liquid container 610 (FIG. 14b).

Specifically, a pull-out rack 622 may be installed on the lower surface of the liquid container 610. A gear 621 may be coupled to the withdrawal/input rack 622. Gear 621 may be installed on the lower surface of the container guide 611. Gear 621 may be connected to the take-out motor 620.

When the gear 621 rotates by the operation of the withdrawal motor 620, the entry and exit rack 622 coupled to the gear 621 moves back and forth, thereby allowing the liquid container 610 to be withdrawn and inputted. At this time, the insertion and withdrawal of the liquid container 610 may be determined by the rotation direction of the withdrawal and insertion motor 620. And the distance of withdrawal and withdrawal may be determined depending on the length of the withdrawal and withdrawal rack 622.

A withdrawal/input detection sensor 630 may be provided to detect when the liquid container 610 is withdrawn and retracted into and out of the second housing 200. The withdrawal detection sensor 630 may be implemented as a Hall sensor, for example.

When the magnetic material 631 is attached to the liquid container 610 and the liquid container 610 is inserted, a Hall sensor may be attached to a specific position of the container guide 611, that is, a position corresponding to the magnetic material 631.

By detecting the position of the magnetic material 631 from the Hall sensor, the insertion and withdrawal of the liquid container 610 can be detected. For example, when the magnetic material 631 approaches within a set distance from the Hall sensor, the inflow of the liquid container 610 can be detected, and when it deviates from the set distance, the withdrawal of the liquid container 610 can be detected.

FIG. 15 is a block diagram of components connected to a control unit that controls a kitchen hood, and FIGS. 16 to 20 are flowcharts showing a method of controlling a kitchen hood according to embodiments.

In one embodiment, referring to FIGS. 15 and 16, the control unit 920 may determine whether a preset heating condition is satisfied (S101).

Satisfaction of the heating condition can be implemented in various ways. For example, as shown in FIG. 17, after the fan 300 is driven (S201) and the drive is stopped (S203), the control unit 920 may determine that the heat generation condition is satisfied (S205).

As another example, as shown in FIG. 18, the control unit 920 may determine that the heating condition is satisfied when the heating mode is input (S303) while waiting for a user input at the operating unit 901 (S301) (S305) ).

As another example, as shown in FIG. 19, after the heating element 270 has previously stopped generating heat (S401), the control unit 920 counts the elapsed time using the timer 905 (S403) and performs a preset heating cycle. If it is determined that it has been reached (S405), it can be determined that the heat generation condition is satisfied (S407).

Again in FIG. 16, when it is determined that the heat generation condition is satisfied as described above (S101), the control unit 920 checks the position of the second housing 200, and if the second housing 200 is in a lowered state (S103) , the second housing 200 can be raised (S105). At this time, the second housing 200 may preferably be completely raised into the interior of the first housing 100.

When the second housing 200 is completely raised, the control unit 920 operates the driving unit 612 to cause the heating element 270 to generate heat (107).

If the position of the second housing 200 is not in the lowered state in step S103, the second housing 200 is in the raised state, so the process can proceed directly to step S107.

In the step (S107) in which the heating element 107 generates heat, the heating temperature of the heating element 270 can be set through the operation unit 901. The user can set the heating temperature by touching the heating temperature button displayed on the control panel 901.

Alternatively, a recommended heating temperature may be automatically displayed on the display 130 in consideration of the operating time of the fan 300, cooked menu, etc., and when the user selects the displayed recommended heating temperature through the control panel 901, The heating temperature can be set automatically.

Alternatively, when the heating condition is satisfied, the heating temperature may be preset as default on the display 130, and the user can adjust the heating temperature by selecting the default heating temperature through the operation panel 901 or touching the heating temperature button. You can.

When the heating element 270 generates heat as described above, the elapsed time can be counted using the timer 905, and when the preset heating time has elapsed (S109), the control unit 920 stops the operation of the driving unit 612. As a result, heat generation in the heating element 270 can be stopped (S111).

As another example, referring to FIGS. 15 and 20 , when the liquid container 610 is filled with a certain capacity or more, the liquid container 610 may be withdrawn from the second housing 200 to empty the liquid inside.

The capacity detection sensor 702 can detect the capacity of the liquid inside the liquid container 610 according to a set cycle or in real time (S501). Alternatively, it may be set to measure when the heating element 270 stops generating heat after it has been generated.

The control unit 920 determines whether the measured capacity is greater than or equal to a preset critical capacity (S503). If so, the second housing 200 may be lowered (S505).

When the second housing 200 is lowered, the liquid container 200 may be pulled out from the second housing 200 in order to empty the liquid inside the liquid container 200 (S507).

The withdrawal of the liquid container 200 may be performed automatically by the operation of the withdrawal motor 911 or may be performed manually by the user. In manual mode, if the liquid container 610 is not withdrawn within a preset time, a voice guidance requesting withdrawal may be output.

Whether the liquid container 300 is withdrawn or withdrawn can be detected by the withdrawal/input detection sensor 903. After the liquid container 610 is withdrawn, it is determined whether entry is detected again (S509), and if entry is detected, the second housing 511 can be raised (S511).

If the first preset time elapses without the introduction being detected (S513), a guidance voice requesting introduction of the liquid container 610 may be output (S515).

In the above, just because all the components constituting the embodiments of the present disclosure have been described as being combined or operated in combination, the present disclosure is not necessarily limited to these embodiments. That is, within the scope of the purpose of the present disclosure, all of the components may be operated by selectively combining one or more of them.

1: Kitchen hood 100: First housing
112a: opening 112b: space
130: Display 140: First housing upper frame
140a: upper opening 141: first upper frame
141a: opening 142: second upper frame
142a: opening 200: second housing
210: Suction grill 210a: Opening
220: Cover 221: Handle
240: Second housing upper frame 241: First upper frame
242: Second upper frame 270: Heating element
300: fan 310: fan housing
400: Sliding assembly 410,410': 1st rail
420,420': 2nd rail 450: Drive assembly
451: rack 452: gear
453: Lifting motor 600: Steam cleaning assembly
610: Liquid container 611: Container guide
650: Condensate collector 650a: Opening
651: Tab (plate) 653: Front plate and back plate
660: Damper 661: Gear
662a: First condensate passage 663: Liquid guide
690: Oil vapor 700: Lighting assembly
901: Control panel 903: Withdrawal detection sensor
905: Timer 911: Input/output motor
913: Audio output unit 915: Memory

Claims (24)

first housing;
a second housing configured to be lifted in and out of the first housing;
A heating element installed on at least one side of the second housing;
A driving unit that operates to generate heat from the heating element;
a lifting motor operating to lift and lower the second housing;
a fan installed inside the first housing and rotating;
an intake port formed in the second housing to allow air to be sucked in from the outside by rotation of the fan;
an outlet formed on one surface of the first housing through which the sucked air is discharged;
a control unit that operates the lifting motor and driving unit; Including,
A kitchen hood in which the control unit operates the driving unit to generate heat to the heating element when a preset heating condition is met.
The kitchen hood according to claim 1, wherein when the fan is stopped after being driven, the control unit operates the driving unit.
The kitchen hood according to claim 1, further comprising a control unit that receives a user operation, and operating the drive unit when a heating mode is selected on the control unit.
The kitchen hood according to claim 1, wherein the control unit operates the driving unit when a preset heat generation cycle arrives.
The kitchen hood according to claim 1, wherein when the heat generation condition is met, the control unit operates the lifting motor to raise the second housing into the first housing and then operates the driving unit.
The kitchen hood according to claim 1, further comprising a liquid container disposed at a lower portion of the second housing to recover grease or oil vapor.
The method according to claim 6, further comprising a capacity detection sensor that measures the capacity of the liquid stored in the liquid container, and the control unit drives the lifting motor when the capacity measured by the capacity detection sensor reaches a preset threshold capacity. A kitchen hood that lowers the second housing.
The kitchen hood according to claim 7, further comprising a withdrawal detection sensor that detects the inflow and outflow of the liquid container into and out of the second housing.
The method according to claim 8, wherein the control unit outputs a guidance voice for requesting withdrawal of the liquid container if the withdrawal of the liquid container is not detected by the withdrawal detection sensor within a preset first time after the second housing is lowered. Kitchen hood.
The method according to claim 8, wherein the second housing is lowered and the withdrawal of the liquid container is detected by the withdrawal detection sensor, and if the withdrawal of the liquid container is not detected within a preset second time, the control unit detects the withdrawal of the liquid container. A kitchen hood that outputs voice guidance for requests.
The method according to claim 8, wherein when the second housing is lowered and the withdrawal and retraction of the liquid container is detected by the withdrawal/intake detection sensor within a preset second time, the control unit operates the lifting motor to lift the second housing into the second housing. 1A kitchen hood that rises inside the housing.
The method according to claim 7, further comprising a drawing-in/out motor for drawing in and out of the liquid container into and out of the second housing, wherein the control unit operates the drawing-in/out motor to move the liquid container into the second housing when the second housing is lowered. 2A kitchen hood that extends to the outside of the housing.
Determining whether a preset heating condition has been met in the control unit;
When the control unit determines that the heat generation condition has been met, controlling a heating element installed on at least one side of a second housing disposed inside the first housing to generate heat;
A method of controlling a kitchen hood, wherein the control unit controls the heating element to stop generating heat when a preset heating time has elapsed after the heating element is generated.
The method of claim 13, wherein when the fan installed inside the first housing is driven and then stopped, the control unit determines that the heat generation condition has occurred.
The method of controlling a kitchen hood according to claim 13, wherein when the heating mode is selected on the operation panel that receives a user operation, the control unit determines that the heating condition has been established.
The method of claim 13, wherein when a preset heat generation cycle arrives, the control unit determines that the heat generation condition has been reached.
The method of claim 13, wherein when the control unit determines that the heating condition has been met and the second housing is lowered, the control unit raises the second housing into the first housing and then controls the heating element to generate heat. .
The method according to claim 13, wherein when the heating element stops generating heat, the control unit measures a volume of liquid stored in a liquid container installed inside the lower end of the second housing; and lowering the second housing from the inside of the first housing to the outside if the measured capacity is greater than or equal to a preset critical capacity.
The method of claim 18, wherein if the withdrawal of the liquid container is not detected by the withdrawal detection sensor within a preset first time after the second housing is lowered, the control unit outputs a voice guidance for requesting the withdrawal of the liquid container. A kitchen hood control method further comprising:
The method of claim 18, wherein the control unit requests the introduction of the liquid container if the second housing is lowered and the withdrawal of the liquid container is not detected within a preset second time after the withdrawal of the liquid container is detected by the withdrawal detection sensor. A kitchen hood control method further comprising the step of outputting a guidance voice for.
The method of claim 18, wherein the control unit further includes a step of raising the second housing into the first housing when the second housing is lowered and the withdrawal and retraction of the liquid container is detected by the withdrawal detection sensor. Hood control method.
The method of controlling a kitchen hood according to claim 18, further comprising the step of the control unit operating an entry/exit motor when the second housing is lowered to withdraw the liquid container from the inside of the second housing to the outside.
The method according to claim 21, wherein the control unit detects the withdrawal of the liquid container from the withdrawal detection sensor and outputs a guidance voice for requesting the introduction of the liquid container if the introduction of the liquid container is not detected within a preset second time. A kitchen hood control method comprising further steps.
The method according to claim 21, wherein the control unit raises the second housing into the first housing when the withdrawal of the liquid container is detected within a preset second time after the withdrawal of the liquid container is detected by the withdrawal detection sensor. A kitchen hood control method comprising further steps.

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