CN110631089A - Air curtain smoke exhaust ventilator - Google Patents

Abstract

The invention discloses an air curtain range hood, comprising: an air curtain device for forming an air curtain; the impurity removing device is used for removing impurities in an air duct of the air curtain range hood and comprises an impurity removing unit arranged in the air curtain device; gas condition acquisition means for acquiring a gas condition; and the impurity removal capability judgment device is used for judging the impurity removal capability of the impurity removal device according to the data obtained by the gas condition acquisition device. The air curtain range hood introduced by the invention removes impurities from air flow in an air duct of the range hood, and monitors the impurity removal condition in the air duct so as to control the cleanliness of the air flow.

Description

Air curtain smoke exhaust ventilator

Technical Field

The invention belongs to the field of kitchen air purification equipment, and particularly relates to an air curtain range hood.

Background

Kitchen cleaning equipment in the prior art relies on air flow to improve the kitchen gas environment. At present, most of the equipment is the range hood and the related improved equipment, and the types of the equipment are various, and the equipment has double cylinders, single cylinders, a cover type, upper air suction, lower air suction and the like. However, these range hoods are passive air suction devices, and the oil smoke suction port is a certain distance away from the cooking device that generates oil smoke, so that the oil smoke having certain kinetic energy and generated instantaneously during cooking cannot be completely removed. In order to solve the above problems, manufacturers of kitchen cleaning equipment often improve the range hood in a manner of changing the height and working power thereof, so that the fume suction effect is improved, but the problem of the fume overflowing from the periphery of the cooker still cannot be solved. In addition, the problem of oil smoke escape cannot be solved by increasing the area of the range hood cage to control the rising oil smoke below the smoke hood, increasing the power of the main motor and enhancing the smoke exhaust effect by large suction force. Therefore, how to effectively block the oil smoke from escaping becomes a problem which needs to be solved urgently. The performance requirements of consumers on kitchen air purification equipment are higher and higher, the large suction force becomes the pursuing target of various big merchants, but the problems of incomplete suction, oil smoke overflow and the like cannot be solved by the range hood sold on the market at present, a small part of range hood escapes from the front part of the machine in the cooking process, directly attacks clothes, hair and faces of cookers, is harmful to the skin of the faces, induces respiratory diseases if being sucked by human bodies for a long time, and directly influences the body health of the users. Therefore, the range hood in the prior art is provided with an air curtain device for solving the problem of oil smoke escape so as to isolate the user from the escaping oil smoke when the user uses the range hood. However, the air curtain device requires an air curtain fan to provide air flow, which significantly increases the noise and energy consumption of the device, and the separate arrangement of the control system for the air curtain device also increases the system load and control load of the device.

The present invention has been made in view of this situation.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects of the prior art and provide an air curtain range hood which is used for removing impurities from air flow in an air duct of the range hood and monitoring the impurity removal condition in the air duct so as to control the cleanness degree of the air flow.

In order to solve the technical problems, the invention adopts the technical scheme that:

an air curtain range hood comprising:

an air curtain device for forming an air curtain;

the impurity removing device is used for removing impurities in an air duct of the air curtain range hood and comprises an impurity removing unit arranged in the air curtain device;

gas condition acquisition means for acquiring a gas condition;

and the impurity removal capability judgment device is used for judging the impurity removal capability of the impurity removal device according to the data obtained by the gas condition acquisition device.

The invention is further configured to: and the impurity removal capability judging device adjusts the working state of the air curtain range hood and/or prompts the working state judging result of the air curtain range hood and/or prompts an operation suggestion according to the judging result.

The invention is further configured to: the gas condition acquisition device comprises a working area gas condition acquisition device for acquiring the composition/content of the gas components in the working area of the air curtain range hood and an air channel gas condition acquisition device for acquiring the composition/content of the gas components in the air channel of the air curtain range hood;

preferably, the air duct comprises an air curtain air duct of an air curtain device.

The invention is further configured to: the air curtain range hood comprises a fan device for generating air flow;

preferably, the air duct comprises a fan air duct of a fan device;

preferably, the gas condition comprises gas composition and/or content.

The invention is further configured to: the air duct gas condition acquisition device comprises an air curtain air duct gas condition acquisition device for acquiring the composition/content of gas components in the air curtain air duct;

preferably, the air duct gas condition acquiring device comprises a first air duct gas condition acquiring device for acquiring one side of the air curtain air duct, which moves towards the impurity removing unit, of the air flow;

preferably, the impurity removal capability judgment device compares the data acquired by the first air duct gas condition acquisition device with the data acquired by the working area gas condition acquisition device, and when the comparison result between the two data does not exceed a threshold value, the impurity removal capability of the impurity removal device is good.

The invention is further configured to: the air duct gas condition acquisition device comprises an air curtain air duct gas condition acquisition device for acquiring the composition/content of gas components in the air curtain air duct; the air channel gas condition acquisition device comprises a second air channel gas condition acquisition device for acquiring one side of the air curtain air channel, which deviates from the movement of the impurity removal unit, of the air flow;

preferably, the impurity removal capability judgment device compares the data acquired by the second air duct gas condition acquisition device with the data acquired by the working area gas condition acquisition device, and when the comparison result between the two data does not exceed a threshold value, the impurity removal capability of the impurity removal device and/or the impurity removal unit is good.

The invention is further configured to: the air duct gas condition acquisition device comprises an air curtain air duct gas condition acquisition device for acquiring the composition/content of gas components in the air curtain air duct; the air duct gas condition acquisition device comprises a first air duct gas condition acquisition device for acquiring one side of the air curtain air duct, which moves towards the impurity removal unit, of the air flow; the air channel gas condition acquisition device comprises a second air channel gas condition acquisition device for acquiring one side of the air curtain air channel, which deviates from the movement of the impurity removal unit, of the air flow;

preferably, the impurity removal capability judgment device compares the data acquired by the first air duct gas condition acquisition device with the data acquired by the second air duct gas condition acquisition device, and when the comparison result between the two data does not exceed a threshold value, the impurity removal capability of the impurity removal unit is good.

The invention is further configured to: the impurity removing unit is a deflectable lamellar structure arranged in an air duct of the air curtain device, and when the impurity removing unit is opened, the lamellar structure is turned to form a certain angle with the airflow direction;

preferably, said angle is 90 °;

preferably, when the impurity removal unit is closed, the lamellar structure is turned to be parallel to the airflow direction;

preferably, at least a part of the gas condition obtaining device for obtaining the gas condition of the surrounding environment is arranged at one side of the air curtain range hood close to the user.

The invention is further configured to: the impurity removal unit comprises at least two impurity removal modules for realizing impurity removal function;

preferably, the at least two trash modules can be at least partially overlapped in an open state;

preferably, the impurity removal unit adjusts the adjustment of the filtering capacity level thereof by changing the number of the impurity removal modules in the opened state.

The invention is further configured to: at least part of air flow required by the air curtain device for forming the air curtain is provided by a fan device of the air curtain range hood;

preferably, the air duct of the air curtain device is communicated with the air duct of the fan device;

preferably, at least part of the power of the air flow required by the air curtain device to form the air curtain is provided by the fan device;

preferably, the air curtain device is arranged in a cavity formed by a shell of the air curtain range hood;

preferably, the air curtain device is a structure with a through cavity inside.

Preferably, the gas condition acquisition device is started in real time, and when the oil smoke is detected and the fan device is not started at the moment, a user is prompted whether to start the fan device.

The invention is further configured to: the air inlet part and the guide part are connected through the transition part, the axis of the air inlet part and/or the axis of the guide part mainly extend along the linear direction, and the transition part has a certain bending angle, so that the airflow direction in the air curtain device is changed;

preferably, the transition portion is tubular;

the invention is further configured to: the air curtain device comprises an impurity removal unit for purifying the gas in an internal air channel;

preferably, the impurity removing unit is connected with the guide part;

preferably, at least part of the air duct of the air curtain device is composed of a smoke collection cavity cover plate and a shell of the air curtain range hood;

preferably, the air curtain device comprises an air storage part for adjusting the distribution of air inside the air curtain device, an air outlet of the air curtain device is arranged on the air storage part, and the air storage part forms a part of an air channel of the air curtain device;

preferably, the cavity inside the air storage part is annular, and the annular cavity of the air storage part is arranged around the air suction port of the air curtain range hood;

preferably, the cavity inside the air storage part comprises a smoke collection cavity cover plate surrounding a smoke collection cavity, a shell member connected with the smoke collection cavity cover plate at the periphery of the smoke collection cavity cover plate, and a sealing member arranged opposite to the smoke collection cavity cover plate and connected with the shell member;

preferably, the impurity removing unit is connected with one side of the guiding part close to the wind storage part;

preferably, the impurity removal unit comprises an impurity removal unit switch for controlling the working state of the impurity removal unit;

preferably, the impurity removal unit switch controls whether the impurity removal unit is connected to an air duct of the air curtain device;

preferably, the impurity removal unit switch controls the degree of the impurity removal unit accessing the air duct of the air curtain device.

The invention is further configured to: the air outlet direction of the air outlet of the air curtain device is adjustable;

preferably, an air deflector is arranged at an air outlet of the air curtain device, and the extension direction of the air deflector is adjustable;

preferably, the number of the air outlets of the air curtain device is multiple, and the air outlets of the air curtain device surround the smoke collecting cavity of the air curtain range hood.

The invention is further configured to: the air curtain device comprises a switch part for controlling the on-off of an air channel inside the air curtain device;

preferably, the switch part is at least partially disposed on the guide part;

preferably, the switching part performs on/off control by a pressure difference between both ends thereof.

The invention is further configured to: the air curtain range hood comprises a position acquisition unit for acquiring the position of a user, a gas condition acquisition device and atmosphere acquisition switch unit, wherein the position acquisition unit is connected with the impurity removal unit and/or the gas condition acquisition device and controls the working state of the gas condition acquisition device;

preferably, the gas condition acquisition means includes an atmosphere acquisition switch unit for controlling whether it is turned on;

preferably, the position acquisition unit is connected with the atmosphere acquisition switch unit and controls the working state of the gas condition acquisition device;

preferably, when the position acquiring unit acquires that the first distance between the user and the air curtain range hood reaches/does not reach the corresponding threshold value, the atmosphere acquiring switch unit controls the air curtain device and/or the impurity removing unit and/or the gas condition acquiring device to be turned on/off and/or prompts an acquiring result and/or prompts an operation suggestion;

preferably, when the first distance between the user and the air curtain range hood reaches or does not reach the corresponding threshold value, the position obtaining unit controls the impurity removing unit to improve the impurity removing capability, reduce the impurity removing capability and/or prompt an obtaining result and/or prompt an operation suggestion;

preferably, the first distance is a distance between an air curtain air outlet of the air curtain range hood and a user.

The invention is further configured to: the position acquisition unit acquires a first distance between a user and an air curtain outlet of the air curtain range hood and an acquisition result of the gas condition acquisition device, judges whether the gas condition of air curtain airflow can affect the user, and if the judgment result is yes, adjusts the working state of the impurity removal unit and/or prompts the acquisition result and/or prompts an operation suggestion; and if the judgment result is negative, the working state of the impurity removal unit is not adjusted, and/or the acquisition result is prompted and/or the operation suggestion is prompted.

The invention is further configured to: the air curtain range hood comprises a position acquisition unit for acquiring the position of a user, the position acquisition unit acquires a second distance between air curtain airflow and the user according to the acquired user position and the air outlet direction/air outlet angle of the air curtain device, and controls the working state of the impurity removal unit and/or the gas condition acquisition device and/or prompts an acquisition result and/or prompts an operation suggestion according to the second distance;

preferably, when the second distance reaches or does not reach the corresponding threshold value, controlling the impurity removal unit and/or the gas condition acquisition device to be opened/closed and/or prompting the acquisition result and/or prompting the operation suggestion;

preferably, when the second distance reaches or does not reach the corresponding threshold, the impurity removal unit is controlled to improve the impurity removal capability, reduce the impurity removal capability and/or prompt an acquisition result and/or prompt an operation suggestion.

Preferably, the method for acquiring the angle of the wind outlet direction of the air curtain device comprises obtaining and/or detecting from data of the system.

The invention is further configured to: the gas condition acquisition device comprises an oil smoke acquisition module for acquiring oil smoke content and/or a moisture acquisition module for acquiring moisture content;

preferably, when the result obtained by the lampblack obtaining module exceeds/does not exceed a first lampblack threshold value, the air curtain device is controlled to be opened/closed and/or the obtained result is prompted and/or an operation suggestion is prompted;

preferably, when the acquired result of the moisture acquisition module exceeds/does not exceed a first moisture threshold, the air curtain device is controlled to be opened/closed and/or the acquired result is prompted and/or an operation suggestion is prompted;

preferably, when the result obtained by the oil smoke obtaining module is smaller than the first oil smoke threshold value and larger than the second oil smoke threshold value and the result obtained by the moisture obtaining module is larger than the second moisture threshold value, the air curtain device is controlled to be opened and/or the obtained result and/or the operation suggestion are/is prompted.

After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects.

1. According to the air curtain range hood introduced by the invention, the impurity removal capability of the impurity removal device is judged by analyzing the composition of the atmosphere. In addition, according to the technical scheme, the impurity removal unit is arranged in the air curtain device, so that the quality of the air curtain can be ensured, and the influence on users caused by impurities in the air curtain, such as oil smoke components and water vapor components, is avoided.

2. According to the air curtain range hood introduced by the invention, when the impurity removal device has insufficient impurity removal capability, the impurity removal device may need to be replaced and cleaned, or the oil smoke near the kitchen range is heavier, and the air suction capability of the fan device of the adjusting device is increased. The invention further introduces an impurity removal device/impurity removal unit with adjustable impurity removal capability, and the combination of the impurity removal device/impurity removal unit introduced by the invention enables the air curtain range hood to control the impurity removal capability of the impurity removal device/impurity removal unit according to the result obtained by the gas condition obtaining device, so that the impurity removal effect under different use conditions is ensured.

3. According to the air curtain range hood introduced by the invention, the gas condition acquisition device is designed to at least comprise the working area gas condition acquisition device and the air channel gas condition acquisition device, so that the target gas component condition in the working area and the gas component condition in the air channel are comprehensively inspected, and the removal effect of the impurity removal device on the target substance can be effectively represented. At this time, the air duct gas condition acquisition device is preferably arranged on one side of the impurity removal device communicated with the air duct outlet.

4. According to the air curtain range hood introduced by the invention, the first air channel gas condition acquisition device is additionally arranged in the air channel of the air curtain device and used for inspecting the air flow quality of the air curtain, and the inspection result can be that the air flow quality of the air curtain is good and the air curtain can be normally used; or the quality of the air curtain airflow is poor, and the impurity removal capability of the corresponding impurity removal device and/or the impurity removal unit is adjusted according to the first air channel gas condition acquisition device, or the user is prompted about the condition of poor quality. Further, when the impurity removal capability of the impurity removal device and/or the impurity removal unit is adjusted to the limit set by the system, the current situation of the user is prompted, and the user is reminded to check.

5. According to the air curtain range hood introduced by the invention, the second air channel gas condition acquisition device is added in the air channel of the air curtain device, and the further investigation on the impurity removal capability of the impurity removal device and/or the impurity removal unit can be realized by comparing the data acquired by the second air channel gas condition acquisition device with the data acquired by the working area gas condition acquisition device. The investigation result is more intuitive.

6. According to the air curtain range hood introduced by the invention, the data between the first air channel gas condition acquisition device and the second air channel gas condition acquisition device are compared, so that the impurity removal capability of the impurity removal unit can be independently inspected.

7. According to the air curtain range hood introduced by the invention, the gas condition acquisition device is designed to be a multi-module matched design. During detection, the gas condition sucked by the range hood can be represented from multiple angles through representation of different atmosphere components such as oil smoke, water vapor and the like. Different thresholds are respectively designed for the oil smoke acquisition module and the moisture acquisition module. When the detection result of the oil smoke acquisition module reaches the corresponding oil smoke first threshold value, the air curtain device is controlled to be opened so as to prevent the oil smoke from invading the user. When the detection result of the moisture acquisition module reaches the corresponding first moisture threshold, the air curtain is controlled to be opened, the phenomenon that the sight of a user is shielded by water vapor is avoided, and the first moisture threshold is preferably larger than the first oil smoke threshold. The small amount of water vapor does not affect the user.

8. According to the air curtain range hood introduced by the invention, the detection results of the moisture acquisition module and the oil smoke acquisition module are integrated, and when the moisture acquisition module and the oil smoke acquisition module do not reach the corresponding first threshold value, the corresponding second threshold value is considered, wherein the first threshold value is larger than the corresponding second threshold value. And whether the air curtain device is necessary to be opened is judged according to the comprehensive condition of the moisture and the oil smoke.

9. According to the air curtain range hood introduced by the invention, the gas condition acquisition device is divided into two modules for detecting different substances. The boundary conditions for implementing the opening of the air curtain device/the opening of the impurity removal unit can be set to be different according to different atmosphere compositions. Preferably, the detection criteria for oil smoke should be stricter so that the value of the corresponding threshold for oil smoke is smaller than the corresponding threshold for water vapor, and the gas condition acquisition means is more sensitive to oil smoke than to water vapor.

10. The air curtain extractor hood introduced by the invention improves the air flow source of the air curtain device, so that at least one part of the air discharged by the extractor hood is guided into the air curtain device to become the air flow source of the air curtain. The gas entering the air curtain device has kinetic energy instead of relying on the kinetic energy provided by the air curtain device, so that the energy required for forming air curtain airflow is obviously reduced, and the energy conservation and environmental protection are facilitated.

11. According to the air curtain range hood introduced by the invention, as the gas source of the air curtain airflow is the air around the kitchen range, the air is closer to the temperature around the kitchen range even if the air is transmitted through a longer path, and even if the air curtain with the temperature is directly contacted with a human body, a user does not feel discomfort caused by the temperature difference. Moreover, the temperature can obviously reduce the influence of the air curtain airflow on the food being cooked, and the food is prevented from being cooled.

12. According to the air curtain range hood introduced by the invention, the air curtain device is arranged in the range hood, so that the air curtain device can be effectively hidden, and the influence on the appearance of the range hood is avoided. In addition, the design can shorten the distance between the air curtain device and the fan device, ensure that the airflow power generated by the fan device can efficiently send the airflow into the air curtain device and is discharged from the air outlet of the air curtain device, and realize the function of the air curtain before the flowing performance of the airflow is obviously reduced.

13. According to the air curtain range hood introduced by the invention, the direction of the air inlet of the air curtain device is designed, so that the gas exhausted by the fan device can be more efficiently pushed into the air curtain device, and the phenomenon that the air curtain device stops the gas flow to cause the loss of the flowing performance of the gas flow is avoided.

14. The air curtain fume exhaust fan introduced by the invention designs the position of the air inlet of the air curtain device, the airflow performance of the position is most stable due to the maximum airflow kinetic energy of the position of the air outlet of the fan device, and the airflow of the position is fully purified under the condition that the purifying device is arranged in the fume exhaust fan, so that the fume contained in the fume exhaust fan is very limited, and the fume exhaust fan is more suitable for being used as the air curtain airflow.

15. The air curtain device of the range hood introduced by the invention is structurally designed, and the multi-section structural design ensures that each section can play the function of the range hood and simultaneously can ensure the matching with other sections. The main functions of the air inlet part are as follows: partial air flow in the fan device is effectively separated, the extending direction of the partial air flow is arranged along the air flow direction in the fan device, the separated air flow can enter the air curtain device under the condition of not changing the flowing direction, and the resistance of the air flow entering the air curtain device is greatly reduced. The design of the guide part and the transition part can effectively change the airflow flowing direction, and the guide part is preferably a tubular structure extending in a straight line direction, so that the airflow resistance in the guide part can be reduced.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

fig. 1 is a left-view structural sectional view of an air curtain range hood in one embodiment of the invention;

fig. 2 is a schematic view of a bottom-view direction structure of an air curtain range hood in an embodiment of the invention.

In the figure: 10. air curtain range hood; 1. a housing; 11. a housing member; 21. an air inlet of the air curtain device; 23. an air outlet of the air curtain device; 24. an air inlet part; 25. a transition section; 26. a guide section; 27. an air storage section; 31. a fan; 32. an air duct of the fan device; 33. an air outlet of the fan device; 4. a smoke collection cavity cover plate; 5. a closure; 6. and an impurity removal unit.

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The invention introduces an air curtain range hood, which comprises: the device comprises an air curtain device for forming an air curtain, an impurity removing device for removing impurities in an air channel of the air curtain range hood, a gas condition acquisition device for acquiring gas conditions, and an impurity removing capability judgment device for judging the impurity removing capability of the impurity removing device according to data acquired by the gas condition acquisition device. The impurity removing device comprises an impurity removing unit arranged in the air curtain device. According to the air curtain range hood introduced by the invention, the impurity removal capability of the impurity removal device is judged by analyzing the composition of the atmosphere. In addition, according to the technical scheme, the impurity removal unit is arranged in the air curtain device, so that the quality of the air curtain can be ensured, and the influence on users caused by impurities in the air curtain, such as oil smoke components and water vapor components, is avoided.

Example one

In the air curtain range hood described in this embodiment, the impurity removal capability judgment device adjusts the working state of the air curtain range hood and/or prompts the working state judgment result of the air curtain range hood and/or prompts an operation suggestion according to the judgment result.

Through the air curtain range hood that this embodiment introduced, when the edulcoration device performance was not enough for the edulcoration ability, probably there was the edulcoration device to change abluent condition, perhaps, be the condition that near cooking utensils oil smoke is heavier this moment, the fan device of adjustment equipment increases the ability of induced drafting this moment. The invention further introduces an impurity removal device/impurity removal unit with adjustable impurity removal capability, and the combination of the impurity removal device/impurity removal unit introduced by the invention enables the air curtain range hood to control the impurity removal capability of the impurity removal device/impurity removal unit according to the result obtained by the gas condition obtaining device, so that the impurity removal effect under different use conditions is ensured.

Further, the gas condition obtaining device in this embodiment includes a working area gas condition obtaining device for obtaining the composition/content of the gas component in the working area of the air curtain range hood and an air duct gas condition obtaining device for obtaining the composition/content of the gas component in the air duct of the air curtain range hood. The air duct comprises an air curtain air duct of an air curtain device. The gas condition acquisition device is designed to at least comprise a working area gas condition acquisition device and an air channel gas condition acquisition device, so that the target gas composition condition in the working area and the gas composition condition in the air channel are comprehensively considered, and the cleaning effect of the impurity removal device on the target substance can be effectively represented. At this time, the air duct gas condition acquisition device is preferably arranged on one side of the impurity removal device communicated with the air duct outlet.

Example two

The difference between the air curtain range hood described in this embodiment and the above embodiments is: the air curtain range hood comprises a fan device for generating air flow, and the air channel comprises a fan air channel of the fan device.

Further, the duct gas condition obtaining device in this embodiment includes an air curtain duct gas condition obtaining device for obtaining the composition/content of the gas component in the air curtain duct. The air duct gas condition acquisition device comprises a first air duct gas condition acquisition device for acquiring the side, moving towards the impurity removal unit, of the air flow in the air curtain air duct. And the impurity removal capability judging device compares the data acquired by the first air duct gas condition acquiring device with the data acquired by the working area gas condition acquiring device, and when the comparison result of the two data does not exceed a threshold value, the impurity removal capability of the impurity removal device is good. According to the air curtain range hood introduced by the embodiment, the first air channel gas condition acquisition device is additionally arranged in the air channel of the air curtain device and used for inspecting the air flow quality of the air curtain, and the inspected result can be that the air flow quality of the air curtain is good and the air curtain can be normally used; or the quality of the air curtain airflow is poor, and the impurity removal capability of the corresponding impurity removal device and/or the impurity removal unit is adjusted according to the first air channel gas condition acquisition device, or the user is prompted about the condition of poor quality. Further, when the impurity removal capability of the impurity removal device and/or the impurity removal unit is adjusted to the limit set by the system, the current situation of the user is prompted, and the user is reminded to check.

EXAMPLE III

The difference between the air curtain range hood described in this embodiment and the above embodiments is: the air duct gas condition acquisition device comprises an air curtain air duct gas condition acquisition device for acquiring the composition/content of gas components in the air curtain air duct; the air duct gas condition acquisition device comprises a second air duct gas condition acquisition device for acquiring one side of the air curtain air duct, which deviates from the movement of the impurity removal unit, of the air flow.

Further, the impurity removal capability determining device in this embodiment compares the data acquired by the second air duct gas condition acquiring device with the data acquired by the working area gas condition acquiring device, and when a comparison result between the two does not exceed a threshold value, the impurity removal capability of the impurity removal device and/or the impurity removal unit is good.

The second air flue gas condition acquisition device is additionally arranged in the air flue of the air curtain device, and the data acquired by the second air flue gas condition acquisition device is compared with the data acquired by the working area gas condition acquisition device, so that the further investigation on the impurity removal capability of the impurity removal device and/or the impurity removal unit can be realized. The investigation result is more intuitive.

Example four

The difference between the air curtain range hood described in this embodiment and the above embodiments is: the air duct gas condition acquisition device comprises an air curtain air duct gas condition acquisition device for acquiring the composition/content of gas components in the air curtain air duct; the air duct gas condition acquisition device comprises a first air duct gas condition acquisition device for acquiring one side of the air curtain air duct, which moves towards the impurity removal unit, of the air flow; the air duct gas condition acquisition device comprises a second air duct gas condition acquisition device for acquiring one side of the air curtain air duct, which deviates from the movement of the impurity removal unit, of the air flow.

Further, the impurity removal capability determining device in this embodiment compares the data acquired by the first air duct gas condition acquiring device with the data acquired by the second air duct gas condition acquiring device, and when a comparison result between the two does not exceed a threshold value, the impurity removal capability of the impurity removal unit is good. And comparing the data between the first air channel gas condition acquisition device and the second air channel gas condition acquisition device, so that the impurity removal capability of the impurity removal unit can be independently inspected.

EXAMPLE five

The difference between the air curtain range hood described in this embodiment and the above embodiments is: the edulcoration unit is including the edulcoration unit switch that is used for controlling edulcoration unit operating condition, and edulcoration unit switch control edulcoration unit is whether insert in the wind channel of air curtain device. When the switch of the impurity removal unit is triggered to be in an opening state, the impurity removal unit is connected into the air duct of the air curtain device, and the impurity removal function is achieved. When the switch of the impurity removal unit is triggered to be in a closed state, the impurity removal unit is connected out of the air duct of the air curtain device. The impurity removal unit is connected with the air outlet duct, so that the airflow resistance in the air curtain device can be reduced, and the airflow fluidity of the air curtain device is increased.

Further, in the curtain range hood described in this embodiment, the switch of the impurity removal unit controls the degree of the impurity removal unit accessing the air duct of the air curtain device. The edulcoration unit in this embodiment includes multilayer structure, and each layer all can realize certain edulcoration function. Preferably, the structure of the multilayer impurity removing units is the same, and the number of layers of the impurity removing units connected into the air curtain device air channel can be controlled by the switch of the impurity removing units. When the multi-layer impurity removal unit is connected into the air channel, the impurity removal function is achieved together, and the impurity removal effect is guaranteed. When the number of layers of the impurity removal unit connected into the air channel is small, the minimum flowing loss of the air flow can be ensured. Wherein the impurity removing unit can be a device with a filtering function.

Further, in the curtain range hood described in this embodiment, the impurity removing unit may be a deflectable sheet structure disposed in the air duct of the air curtain device. When the impurity removal function is realized, the lamellar structure is turned to form a certain angle (preferably vertical) with the airflow direction; when the impurity removal function is not required, the lamellar structure is turned to be parallel to the airflow direction.

EXAMPLE six

The difference between the air curtain range hood described in this embodiment and the above embodiments is: the air curtain range hood comprises a position obtaining unit for obtaining the position of a user. The gas condition acquisition device comprises an atmosphere acquisition switch unit for controlling whether the gas condition acquisition device is turned on or not.

Further, in the air curtain range hood in this embodiment, the position acquisition unit is connected to the atmosphere acquisition switch unit and controls the operating state of the gas condition acquisition device. When the position obtaining unit obtains that the first distance between the user and the air curtain range hood reaches/does not reach the corresponding threshold value, the atmosphere obtaining switch unit controls the air curtain device and/or the impurity removing unit and/or the gas condition obtaining device to be turned on/off and/or prompts an obtaining result and/or prompts an operation suggestion.

Further, in the air curtain range hood in this embodiment, when the position acquisition unit acquires that the first distance from the user to the air curtain range hood reaches or does not reach the corresponding threshold value, the impurity removal unit is controlled to improve the impurity removal capability, reduce the impurity removal capability, and/or prompt an acquisition result and/or prompt an operation suggestion. Preferably, the first distance is a distance between an air curtain air outlet of the air curtain range hood and a user.

The air curtain range hood introduced by the embodiment is additionally provided with the position acquisition unit. Preferably, the position acquisition unit is connected with the air curtain device, and when the state of the human body acquired by the position acquisition unit reaches a threshold value, the air curtain device is controlled to be opened. Or, the switch unit is connected with the position acquisition unit, and when the state of the human body acquired by the position acquisition unit reaches a threshold value, the gas condition acquisition device is controlled to be started. This control is beneficial to reducing the burden of the system.

In addition, in the air curtain range hood introduced in this embodiment, the position obtaining unit is not only used for bringing the position of the user into one of the conditions for controlling the opening of the air curtain, but also used for limiting the specific action mode of the air curtain range hood. On the one hand, the air curtain can be judged whether to be meaningful to the user through the air outlet of the air curtain or the distance between the equipment and the user. If the user is near the apparatus, the user may be affected by the oil smoke or the water vapor. Alternatively, when the user is located in the vicinity of the apparatus, the user is likely to be affected by the oil smoke or the water vapor.

EXAMPLE seven

The difference between the air curtain range hood described in this embodiment and the above embodiments is: the position acquisition unit controls the working state of the impurity removal unit and/or prompts the acquisition result and/or prompts an operation suggestion according to the first distance and the result acquired by the gas condition acquisition device.

Further, in the air curtain range hood in this embodiment, the position obtaining unit obtains the first distance and a result obtained by the gas condition obtaining device, determines whether the gas condition of the air curtain airflow affects a user, and if the determination result is yes, adjusts a working state of the impurity removing unit and/or prompts an obtaining result and/or prompts an operation suggestion.

As shown in fig. 1 and fig. 2, the difference between the air curtain range hood of the present embodiment and the above embodiments is: the air outlet direction of the air outlet 23 of the air curtain device is adjustable. The air outlet 23 of the air curtain device is provided with an air deflector (not shown in the figure), and the extension direction of the air deflector is adjustable. Preferably, the number of the air outlets 23 of the air curtain devices is multiple, and the air outlets 23 of the multiple air curtain devices are arranged around the smoke collecting cavity of the air curtain range hood.

Further, in the air curtain range hood in this embodiment, the air curtain range hood includes a position acquisition unit that acquires a user position. The position obtaining unit further obtains a second distance between the air curtain airflow and the user according to the obtained user position and the air outlet direction/angle of the air curtain device, and controls the working state of the impurity removing unit and/or the gas condition obtaining device and/or prompts an obtaining result and/or prompts an operation suggestion according to the second distance.

Further, in the air curtain range hood in this embodiment, when the second distance reaches or does not reach the corresponding threshold, the opening/closing of the impurity removal unit and/or the gas condition acquisition device is controlled and controlled, and/or an acquisition result and/or an operation suggestion are prompted.

Or when the second distance reaches or does not reach the corresponding threshold value, controlling the impurity removal unit to improve the impurity removal capability, reduce the impurity removal capability and/or prompt an acquisition result and/or prompt an operation suggestion. Preferably, the method for acquiring the angle of the wind outlet direction of the air curtain device comprises obtaining and/or detecting from data of the system. The blowing angle of the air curtain air outlet, namely the angle of the air curtain, is brought into the investigation range, and corresponding calculation is carried out. When the distance between the position that the user was located and the air curtain air current teaches closely, then explain that the air curtain probably causes the influence to the user, at this moment, open the monitoring to air curtain air current quality, guarantee user's use and experience.

Example eight

As shown in fig. 1 and fig. 2, the difference between the air curtain range hood of the present embodiment and the above embodiments is: the air curtain range hood comprises a fan device for generating air flow and an air curtain device for forming an air curtain, wherein at least part of air flow required by the air curtain device for forming the air curtain is provided by the fan device, and an air channel of the air curtain device is communicated with an air channel of the fan device. The fan device is a generic name for a series of devices and components, and includes a fan 31 for generating an air flow. Preferably, the fan device further comprises a fan device housing enclosing an air duct of the fan device. According to the air curtain range hood introduced by the invention, as the gas source of the air curtain airflow is the air around the kitchen range, the air is closer to the temperature around the kitchen range even if the air is transmitted through a longer path, and even if the air curtain with the temperature is directly contacted with a human body, a user does not feel discomfort caused by the temperature difference. Moreover, the temperature can obviously reduce the influence of the air curtain airflow on the food being cooked, and the food is prevented from being cooled.

Example nine

As shown in fig. 1, the difference between the air curtain range hood of the present embodiment and the above embodiments is: at least part of the power of the air flow required by the air curtain device for forming the air curtain is provided by the fan device, the air curtain device is arranged in a cavity formed by the shell 1 of the air curtain range hood, and the air curtain device is of a structure with a through cavity inside. Through the air curtain range hood introduced by the embodiment, the air flow source of the air curtain device is improved, so that at least one part of the gas discharged by the range hood is guided into the air curtain device to become the air flow source of the air curtain. The gas entering the air curtain device has kinetic energy instead of relying on the kinetic energy provided by the air curtain device, so that the energy required for forming air curtain airflow is obviously reduced, and the energy conservation and environmental protection are facilitated. Further, the air curtain range hood that this embodiment introduced sets up the air curtain device in range hood's inside, can hide the air curtain device effectively, avoids causing the influence to range hood's outward appearance. In addition, the design can shorten the distance between the air curtain device and the fan device, ensure that the airflow power generated by the fan device can efficiently send the airflow into the air curtain device and is discharged from the air outlet of the air curtain device, and realize the function of the air curtain before the flowing performance of the airflow is obviously reduced.

Further, in the air curtain range hood introduced in this embodiment, the air inlet 21 of the air curtain device is communicated with the air duct 32 of the fan device, and the air inlet 21 of the air curtain device is arranged facing the airflow direction in the air duct 32 of the fan device; preferably, the angle between the direction of the air inlet 21 of the air curtain device and the air flow direction in the air duct 32 of the fan device is 90-180 °. Through the air curtain range hood that this embodiment introduced, the orientation to the air intake of air curtain device has been designed for fan device combustion gas can push the air curtain device more in the efficient, avoids blocking that air curtain device self structure led to the fact the air current and makes the air current lose the flow property.

Example ten

As shown in fig. 1, the difference between the air curtain range hood of the present embodiment and the above embodiments is: the air inlet 21 of the air curtain device is connected with the position adjacent to the air outlet 33 of the fan device. Because the position air current kinetic energy of fan unit air outlet 33 is the biggest, the air current performance of this position is also the most stable to, under the inside purifier that is provided with of range hood, the air current of this position is the gas that has been fully purified, and the oil smoke that contains in it is very limited, more is fit for as wind curtain air current.

Further, the air curtain device described in the present embodiment includes an air inlet portion 24 and a guide portion 26 communicating with each other, and the air inlet portion 24 is connected to the fan device so that the air flow in the fan device is guided into the air curtain device. At least a portion of the air inlet portion 24 is disposed within the air duct 32 of the fan device. Preferably, the air intake 24 and/or the guide 26 are primarily ducted structures.

Further, in the curtain range hood described in this embodiment, the air inlet portion 24 and the guide portion 26 are connected by the transition portion 25, the axis of the air inlet portion 24 and/or the axis of the guide portion 26 mainly extend along a straight direction, and the transition portion 25 has a certain bending angle, so as to change the airflow direction in the air curtain device. Preferably, the included angle between the extending direction of the guiding portion 26 along the inner airflow direction thereof and the air outlet direction of the air curtain device is 90-180 °. Preferably, the transition 25 is tubular; the air inlet portion 24, the transition portion 25 and the guide portion 26 are integrally formed.

The air curtain range hood introduced by the embodiment designs the structure of the air curtain device, and the structural design of the multiple sections ensures that each section can be matched with other sections while playing the functions. The main functions of the air inlet part are as follows: partial air flow in the fan device is effectively separated, the extending direction of the partial air flow is arranged along the air flow direction in the fan device, the separated air flow can enter the air curtain device under the condition of not changing the flowing direction, and the resistance of the air flow entering the air curtain device is greatly reduced. The design of the guide part and the transition part can effectively change the airflow flowing direction, and the guide part is preferably a tubular structure extending in a straight line direction, so that the airflow resistance in the guide part can be reduced.

EXAMPLE eleven

As shown in fig. 1, the difference between the air curtain range hood of the present embodiment and the above embodiments is: the air curtain device comprises an air storage part 27 for adjusting the distribution of air inside the air curtain device, an air outlet 23 of the air curtain device is arranged on the air storage part 27, and the air storage part 27 forms a part of an air channel of the air curtain device.

Further, in the curtain type range hood described in this embodiment, the cavity inside the air storage portion 27 is annular, and the annular cavity of the air storage portion 27 is disposed around the air suction opening (the lower middle portion of the structure shown in fig. 1) of the air curtain type range hood.

Through the air curtain range hood introduced by the embodiment, the design of the air storage part is added, so that the airflow led out from the fan device is led into the air storage part, and the airflow direction is redistributed, so that the airflow is discharged from the air curtain device from a proper position. The air storage part is of an annular structural design, the air suction opening of the range hood is arranged at an annular central position, the air outlets of the air curtain device can be arranged at a plurality of positions around the air suction opening, the flexible arrangement of the air outlet position of the air curtain device is facilitated, and even if the position is narrow and small and the structure is complex, the air outlet of the air curtain device can be arranged.

Further, in the curtain range hood described in this embodiment, the cavity inside the air storage portion 27 includes a smoke collection cavity cover plate 4 enclosing a smoke collection cavity, a shell member 11 connected to the smoke collection cavity cover plate 4 at the periphery of the smoke collection cavity cover plate 4, and a sealing member 5 arranged opposite to the smoke collection cavity cover plate 4 and connected to the shell member 11. The number of housing members 11 and/or smoke collection chamber cover plates 4 and/or closures 5 is at least one. Preferably, the guide 26 communicates with the cavity inside the reservoir 27 through the closure 5/smoke collection chamber cover plate 4/housing member 11. The air storage part 27 is designed to be formed by the equipment smoke collection cavity cover plate 4 and a part of the shell at intervals, so that the space of the equipment is effectively utilized, more functions are given to equipment parts, and the arrangement of an air curtain device is prevented from increasing the structural burden of the equipment.

Further, in the curtain range hood described in this embodiment, the air outlet direction of the air outlet 23 of the air curtain device is adjustable. The air outlet 23 of the air curtain device is provided with an air deflector (not shown in the figure), and the extension direction of the air deflector is adjustable. Preferably, the number of the air outlets 23 of the air curtain devices is multiple, and the air outlets 23 of the multiple air curtain devices are arranged around the smoke collecting cavity of the air curtain range hood. The air curtain device comprises an impurity removal unit 6 for purifying the air in the air channel inside the air curtain device. Preferably, the trash removal unit 6 is connected to the guide portion 26. The design of the impurity removal unit is added, so that the cleanliness of air curtain airflow can be further ensured.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. An air curtain range hood, which is characterized by comprising:

an air curtain device for forming an air curtain;

the impurity removing device is used for removing impurities in an air duct of the air curtain range hood and comprises an impurity removing unit arranged in the air curtain device;

gas condition acquisition means for acquiring a gas condition;

and the impurity removal capability judgment device is used for judging the impurity removal capability of the impurity removal device according to the data obtained by the gas condition acquisition device.

2. The air curtain range hood according to claim 1, wherein the impurity removal capability judgment device adjusts the working state of the air curtain range hood according to the judgment result and/or prompts the working state judgment result of the air curtain range hood and/or prompts an operation suggestion;

preferably, the gas condition comprises gas composition and/or content.

3. The air curtain range hood according to claim 1, wherein the gas condition obtaining device comprises a working area gas condition obtaining device for obtaining the composition/content of the gas component in the working area of the air curtain range hood and an air duct gas condition obtaining device for obtaining the composition/content of the gas component in the air duct of the air curtain range hood;

preferably, the air duct comprises an air curtain air duct of an air curtain device.

4. The air curtain range hood according to any one of claims 1 to 3, wherein the air curtain range hood package is a fan device for providing power for absorbing oil smoke;

preferably, the air duct comprises a fan duct of a fan device.

5. The air curtain range hood according to claim 3, wherein the air duct gas condition obtaining device comprises an air curtain air duct gas condition obtaining device for obtaining the composition/content of the gas component in the air curtain air duct;

preferably, the air duct gas condition acquiring device comprises a first air duct gas condition acquiring device for acquiring one side of the air curtain air duct, which moves towards the impurity removing unit, of the air flow;

preferably, the impurity removal capability judgment device compares the data acquired by the first air duct gas condition acquisition device with the data acquired by the working area gas condition acquisition device, and when the comparison result between the two data does not exceed a threshold value, the impurity removal capability of the impurity removal device is good.

6. The air curtain range hood according to claim 3, wherein the air duct gas condition obtaining device comprises an air curtain air duct gas condition obtaining device for obtaining the composition/content of the gas component in the air curtain air duct; the air channel gas condition acquisition device comprises a second air channel gas condition acquisition device for acquiring one side of the air curtain air channel, which deviates from the movement of the impurity removal unit, of the air flow;

preferably, the impurity removal capability judgment device compares the data acquired by the second air duct gas condition acquisition device with the data acquired by the working area gas condition acquisition device, and when the comparison result between the two data does not exceed a threshold value, the impurity removal capability of the impurity removal device and/or the impurity removal unit is good.

7. The air curtain range hood according to claim 3, wherein the air duct gas condition obtaining device comprises an air curtain air duct gas condition obtaining device for obtaining the composition/content of the gas component in the air curtain air duct; the air duct gas condition acquisition device comprises a first air duct gas condition acquisition device for acquiring one side of the air curtain air duct, which moves towards the impurity removal unit, of the air flow; the air channel gas condition acquisition device comprises a second air channel gas condition acquisition device for acquiring one side of the air curtain air channel, which deviates from the movement of the impurity removal unit, of the air flow;

preferably, the impurity removal capability judgment device compares the data acquired by the first air duct gas condition acquisition device with the data acquired by the second air duct gas condition acquisition device, and when the comparison result between the two data does not exceed a threshold value, the impurity removal capability of the impurity removal unit is good.

8. The air curtain range hood according to claim 1, wherein the impurity removing unit is a deflectable lamellar structure arranged in an air duct of the air curtain device, and when the impurity removing unit is opened, the lamellar structure is turned to form a certain angle with the air flow direction;

preferably, said angle is 90 °;

preferably, when the impurity removal unit is closed, the lamellar structure is turned to be parallel to the airflow direction;

preferably, at least a part of the gas condition obtaining device for obtaining the gas condition of the surrounding environment is arranged at one side of the air curtain range hood close to the user.

9. The air curtain range hood according to claim 1, wherein the impurity removal unit comprises at least two impurity removal modules for realizing an impurity removal function;

preferably, the at least two trash modules can be at least partially overlapped in an open state;

preferably, the impurity removal unit adjusts the adjustment of the filtering capacity level thereof by changing the number of the impurity removal modules in the opened state.

10. The air curtain range hood of claim 1, wherein at least part of the power of the air flow required by the air curtain device to form the air curtain is provided by the fan device;

preferably, at least part of the air duct of the air curtain device is composed of a smoke collection cavity cover plate and a shell of the air curtain range hood;

preferably, the air duct of the air curtain device is communicated with the air duct of the fan device;

preferably, the air curtain device is arranged in a cavity formed by a shell of the air curtain range hood;

preferably, the air curtain device is a structure with a through cavity inside.

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