Air curtain range hood

Abstract

The present invention discloses an air curtain range hood, comprising: an air curtain device for forming an air curtain; and a gas condition acquisition device for acquiring the gas conditions of the surrounding environment and / or within the device, connected to the air curtain device and, based on the acquired results, controlling the operating state of the air curtain device and / or providing prompts for the acquired results and / or operational recommendations. The air curtain range hood described in the present invention improves the conditions for activating the air curtain device, allowing it to activate only when needed, thus enhancing the user experience.

Description

Technical Field

[0001] The present invention belongs to the field of kitchen air purification equipment, and in particular relates to an air curtain range hood. Background Art

[0002] Existing kitchen purification equipment often relies on air flow to improve the kitchen's air quality. Currently, most of these devices are range hoods and related improvements, available in a variety of models, including double-tube, single-tube, hood-type, top-draft, and bottom-draft. However, these range hoods are passive air extraction devices, with their intake ports located a certain distance from the cooking utensils that generate the fumes. Therefore, they cannot completely remove the kinetic energy of the instantaneous cooking fumes. To address this issue, kitchen purification equipment manufacturers have often improved the range hood's height and operating power, resulting in improved fume extraction. However, this still fails to address the issue of fume escaping from the surrounding cooking utensils. Furthermore, the problem of fume escape cannot be addressed by increasing the range hood's smoke trapping area to contain rising fumes below the hood, or by increasing the main motor power to enhance exhaust efficiency through increased suction. Therefore, effectively preventing fume escape has become a pressing issue. Consumers are increasingly demanding higher performance from kitchen air purification equipment, and strong suction has become a goal pursued by major businesses. However, current range hoods on the market are still unable to cope with problems such as incomplete suction and oil smoke overflow. During the cooking process, a small amount of oil will always escape from the front of the machine, directly invading the cook's clothes, hair, and face, which will not only damage the facial skin, but also induce respiratory diseases if inhaled by the human body for a long time, directly affecting the user's health. Therefore, in order to solve the problem of oil smoke escape, range hoods in the prior art are often provided with an air curtain device to isolate the user from the escaping oil smoke when the user is using it. However, the air curtain device requires an air curtain fan to provide airflow, which significantly increases the equipment noise and energy consumption, and the separate control system for the air curtain device also increases the system burden and control burden of the equipment.

[0003] In view of this, the present invention is proposed. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an air curtain range hood, in which the opening conditions of the air curtain device are improved so that the air curtain device is opened only when needed, thereby improving the user experience.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0006] An air curtain range hood, comprising:

[0007] An air curtain device, used for forming an air curtain;

[0008] A gas condition acquisition device is used to acquire the gas condition of the surrounding environment and / or the internal gas condition of the equipment, is connected to the air curtain device, and controls the working state of the air curtain device and / or prompts the acquired result and / or prompts operation suggestions based on the acquired result.

[0009] The present invention is further configured as follows: the gas condition acquisition device includes an oil fume acquisition module for acquiring oil fume content and / or a moisture acquisition module for acquiring moisture content;

[0010] Preferably, the internal gas includes the gas in the air duct for oil smoke to flow inside the air curtain range hood;

[0011] Preferably, the internal gas includes the gas in the air duct of the air curtain device;

[0012] Preferably, the acquisition method includes detection.

[0013] The present invention is further configured as follows: the gas condition acquisition device includes a primary atmosphere acquisition unit for acquiring the gas condition of the surrounding environment and / or a secondary atmosphere acquisition unit for acquiring the gas condition in the air duct of the air curtain device;

[0014] Preferably, at least part of the primary atmosphere acquisition unit is arranged outside the air curtain range hood;

[0015] Preferably, at least part of the secondary atmosphere acquisition unit is arranged inside the air curtain range hood;

[0016] Preferably, the primary atmosphere acquisition unit and / or the secondary atmosphere acquisition unit comprises an oil fume acquisition module for acquiring oil fume content and / or a moisture acquisition module for acquiring moisture content.

[0017] The present invention is further configured as follows: the working state of the air curtain device includes: the open and closed states of the air curtain device;

[0018] Preferably, when the primary atmosphere acquisition unit acquires that the ambient gas contains / does not contain oil smoke, the air curtain device is controlled to be turned on / off and / or the acquired result and / or operation suggestion are prompted;

[0019] Preferably, when the primary atmosphere acquisition unit acquires that the oil smoke content of the ambient gas reaches / does not reach a threshold, the air curtain device is controlled to be turned on / off and / or the acquired result and / or operation suggestion is prompted;

[0020] Preferably, the secondary atmosphere acquisition unit is turned on only when the air curtain device is turned on.

[0021] The present invention is further configured as follows: the air curtain device includes an impurity removal unit for purifying the gas in the internal air duct thereof;

[0022] Preferably, the impurity removal unit includes an impurity removal unit switch for controlling the working state of the impurity removal unit;

[0023] Preferably, the working state of the impurity removal unit includes: the on and off states of the impurity removal unit;

[0024] Preferably, the impurity removal unit switch is a manual switch / automatic switch.

[0025] The present invention is further configured such that: the impurity removal unit is connected to the gas condition acquisition device, and the working state of the impurity removal unit is controlled and / or the acquired result and / or operation suggestion is prompted according to the acquisition result of the gas condition acquisition device;

[0026] Preferably, the impurity removal unit is connected to the primary atmosphere acquisition unit and / or the secondary atmosphere acquisition unit;

[0027] Preferably, when the primary atmosphere acquisition unit and / or the secondary atmosphere acquisition unit acquire that the ambient gas / the gas inside the equipment contains / does not contain oil smoke, the impurity removal unit is controlled to be turned on / off and / or the acquired result and / or operation suggestion are prompted;

[0028] Preferably, when the primary atmosphere acquisition unit and / or the secondary atmosphere acquisition unit obtains that the oil fume content in the ambient gas / gas inside the equipment reaches / does not reach a threshold, the impurity removal unit is controlled to turn on / off and / or prompt the obtained results and / or prompt operation suggestions.

[0029] The present invention is further configured as follows: the air curtain range hood includes a fan device that provides power for extracting oil smoke, and at least part of the airflow required for the air curtain device to form the air curtain is provided by the fan device;

[0030] Preferably, the air duct of the air curtain device is in communication with the air duct of the fan device;

[0031] Preferably, at least part of the air duct of the air curtain device is formed by the smoke collecting chamber cover and the outer shell of the air curtain range hood;

[0032] Preferably, at least part of the power of the airflow required for the air curtain device to form the air curtain is provided by the fan device;

[0033] Preferably, at least part of the air curtain device is arranged in the cavity formed by the shell of the air curtain range hood;

[0034] Preferably, the air curtain device has a structure with a through cavity inside.

[0035] The present invention is further configured as follows: the gas condition acquisition device includes a switch unit for controlling its working state, and a position acquisition unit for acquiring the user's position, wherein the position acquisition unit is connected to the switch unit and controls its working state;

[0036] Preferably, when the position acquisition unit acquires that the distance between the user and the air curtain range hood reaches / does not reach a threshold, the switch unit controls the gas condition acquisition device to turn on / off and / or prompts the acquisition result and / or prompts operation suggestions;

[0037] Preferably, the gas condition acquisition device is arranged on the side of the air curtain range hood close to the user, preferably on the front side of the range hood.

[0038] The present invention is further configured such that: the air inlet of the air curtain device is in communication with the air duct of the fan device;

[0039] Preferably, the air inlet of the air curtain device is arranged to face the air flow direction in the air duct of the fan device;

[0040] Preferably, the angle between the direction of the air inlet of the air curtain device and the direction of the air flow in the air duct of the fan device is in the range of 90° to 180°.

[0041] The present invention is further configured as follows: the air curtain range hood includes a fan device for providing power for extracting oil smoke, the air curtain device includes an air inlet portion and a guide portion that are internally connected, the air inlet portion is connected to the fan device, so that the airflow in the fan device is guided into the air curtain device;

[0042] Preferably, at least a portion of the air inlet is disposed in an air duct of the fan device;

[0043] Preferably, the air inlet portion and / or the guide portion is mainly a pipe-like structure;

[0044] Preferably, the air curtain device includes an air storage portion for adjusting the air distribution inside the air curtain device, the air storage portion is provided with an air outlet of the air curtain device, and the air storage portion constitutes a part of the air duct of the air curtain device;

[0045] 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;

[0046] Preferably, the components of the cavity inside the air storage part include a smoke collecting chamber cover plate surrounding the smoke collecting chamber, a shell component connected to the smoke collecting chamber cover plate around the smoke collecting chamber cover plate, and a closure member arranged opposite to the smoke collecting chamber cover plate and connected to the shell component.

[0047] The present invention is further configured as follows: the air curtain range hood includes a fan device for generating airflow, and at least part of the airflow required for the air curtain device to form the air curtain is provided by the fan device;

[0048] Preferably, the air duct of the air curtain device is in communication with the air duct of the fan device;

[0049] Preferably, at least part of the power of the airflow required for the air curtain device to form the air curtain is provided by the fan device;

[0050] Preferably, the air curtain device is arranged in a cavity formed by the shell of the air curtain range hood;

[0051] Preferably, the air curtain device has a structure with a through cavity inside.

[0052] The present invention is further configured such that at least a portion of the secondary atmosphere acquisition unit is disposed within the air duct of the air curtain device.

[0053] The present invention is further configured such that: the air inlet of the air curtain device is in communication with the air duct of the fan device;

[0054] Preferably, the air inlet of the air curtain device is arranged to face the air flow direction in the air duct of the fan device;

[0055] Preferably, the angle between the direction of the air inlet of the air curtain device and the direction of the air flow in the air duct of the fan device is in the range of 90° to 180°.

[0056] The present invention is further configured as follows: the air curtain device includes an air inlet portion and a guide portion that are internally connected, the air inlet portion is connected to the fan device, so that the airflow in the fan device is guided into the air curtain device;

[0057] Preferably, at least a portion of the air inlet is disposed in an air duct of the fan device;

[0058] Preferably, the air inlet portion and / or the guide portion is mainly a pipe-like structure;

[0059] Preferably, the air curtain device includes an air storage portion for adjusting the air distribution inside the air curtain device, the air storage portion is provided with an air outlet of the air curtain device, and the air storage portion constitutes a part of the air duct of the air curtain device;

[0060] 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;

[0061] Preferably, the components of the cavity inside the air storage part include a smoke collecting chamber cover plate surrounding the smoke collecting chamber, a shell component connected to the smoke collecting chamber cover plate around the smoke collecting chamber cover plate, and a closure member arranged opposite to the smoke collecting chamber cover plate and connected to the shell component.

[0062] Preferably, the gas condition acquisition device is turned on in real time, and when oil smoke is detected and the fan device is not turned on at this time, the user is prompted whether to turn on the fan device.

[0063] The present invention is further configured as follows: the gas condition acquisition device includes a switch unit for controlling its working state, and a position acquisition unit for obtaining the user's position, wherein the position acquisition unit is connected to the switch unit and controls its working state;

[0064] Preferably, when the distance between the user and the air curtain range hood obtained by the position acquisition unit reaches / does not reach a threshold, the switch unit controls the gas condition acquisition device to be turned on / off.

[0065] Preferably, the gas condition acquisition device is arranged on the side of the air curtain range hood close to the user, preferably on the front side of the range hood.

[0066] The present invention is further configured such that: the secondary atmosphere acquisition unit comprises: a first air duct gas condition acquisition device for acquiring a side of the air flow in the air curtain duct moving toward the impurity removal unit;

[0067] 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. When the result of the comparison between the two does not exceed a threshold, the impurity removal capability of the impurity removal device is good.

[0068] The present invention is further configured as follows: the secondary atmosphere acquisition unit includes a second air duct gas condition acquisition device for acquiring a side of the airflow in the air curtain duct that moves away from the impurity removal unit;

[0069] Preferably, the impurity removal capability determination device compares the data acquired by the second air duct gas condition acquisition device with the data acquired by the workspace gas condition acquisition device. When the result of the comparison between the two does not exceed a threshold, the impurity removal capability of the impurity removal unit is good. If the impurity removal capability of the impurity removal unit is lower than a preset value, the device automatically adjusts the impurity removal capability of the impurity removal unit and / or prompts the acquired result and / or prompts operational suggestions.

[0070] Preferably, the impurity removal capacity is adjusted by adjusting the working state of the impurity removal unit.

[0071] The present invention is further configured as follows: the secondary atmosphere acquisition unit includes a first air duct gas condition acquisition device for acquiring a side of the air flow in the air curtain duct moving toward the impurity removal unit; and a second air duct gas condition acquisition device for acquiring a side of the air flow in the air curtain duct moving away from the impurity removal unit;

[0072] 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. When the result of the comparison between the two does not exceed a threshold, the impurity removal capability of the impurity removal unit is good.

[0073] The present invention is further configured as follows: the impurity removal unit is a deflectable sheet structure provided in the air duct of the air curtain device, and when the impurity removal unit is turned on, the sheet structure flips to form a certain angle with the airflow direction;

[0074] Preferably, the angle is 90°;

[0075] Preferably, when the impurity removal unit is closed, the sheet structure flips to be parallel to the airflow direction;

[0076] Preferably, at least a portion of the gas condition acquisition device for detecting the composition and / or content of the surrounding environment is arranged on the side of the air curtain range hood close to the user.

[0077] The present invention is further configured as follows: the impurity removal unit includes at least two impurity removal modules that realize the impurity removal function;

[0078] Preferably, the at least two impurity removal modules can at least partially overlap when in the open state;

[0079] Preferably, the impurity removal unit adjusts its filtering capacity level by changing the number of impurity removal modules in an open state.

[0080] The present invention is further configured as follows: the air curtain range hood includes a position acquisition unit for acquiring a user's position, a gas condition acquisition device, a gas condition acquisition device, and an atmosphere acquisition switch unit; the position acquisition unit is connected to the impurity removal unit and / or the gas condition acquisition device, and the atmosphere acquisition switch unit controls the working state of the gas condition acquisition device;

[0081] Preferably, the gas condition acquisition device includes an atmosphere acquisition switch unit for controlling whether the gas condition acquisition device is turned on or off;

[0082] Preferably, the position acquisition unit is connected to the atmosphere acquisition switch unit and controls the working state of the gas condition acquisition device;

[0083] Preferably, when the position acquisition unit acquires that the first distance between the user and the air curtain range hood reaches / does not reach a corresponding threshold, the atmosphere acquisition switch unit controls the air curtain device and / or the impurity removal unit and / or the gas condition acquisition device to turn on / off and / or prompts the acquisition result and / or prompts operation suggestions;

[0084] Preferably, when the position acquisition unit acquires that the first distance between the user and the air curtain range hood reaches / does not reach a corresponding threshold, the control unit increases / decreases the impurity removal capability and / or prompts the acquisition result and / or prompts the operation suggestion;

[0085] Preferably, the first distance is the distance between the air curtain outlet of the air curtain range hood and the user.

[0086] The present invention is further configured as follows: the position acquisition unit acquires a first distance between the user and the air curtain outlet of the air curtain range hood and an acquisition result of the gas condition acquisition device, and judges whether the gas condition of the air curtain airflow will affect the user. If the judgment result is yes, the working state of the impurity removal unit is adjusted and / or the acquisition result and / or operation suggestions are prompted; if the judgment result is no, the working state of the impurity removal unit is not adjusted and / or the acquisition result and / or operation suggestions are not prompted.

[0087] The present invention is further configured as follows: the air curtain range hood includes a position acquisition unit for acquiring a user position, the position acquisition unit acquiring a second distance between the air curtain airflow and the user based on the acquired user position and the air outlet direction / angle of the air curtain device, and controlling the operating state of the impurity removal unit and / or the gas condition acquisition device and / or prompting an acquisition result and / or prompting an operation suggestion based on the second distance;

[0088] Preferably, when the second distance reaches / does not reach a corresponding threshold, the impurity removal unit and / or the gas condition acquisition device is controlled to be turned on / off and / or an acquisition result and / or an operation suggestion is prompted;

[0089] Preferably, when the second distance reaches / does not reach a corresponding threshold, the impurity removal unit is controlled to increase / decrease impurity removal capability and / or prompt acquisition results and / or prompt operation suggestions.

[0090] Preferably, the method for acquiring the angle of the air outlet direction of the air curtain device includes obtaining it from system data and / or detecting it.

[0091] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0092] 1. With the air curtain range hood introduced in the present invention, the opening conditions of the air curtain device are designed. A gas condition acquisition device is added to the range hood, and whether the air curtain device is turned on is controlled by the detection result of the gas condition acquisition device. When the content of oil smoke in the surrounding environment of the range hood reaches a certain level, the device automatically turns on the air curtain device to prevent the oil smoke from harming the user. Preferably, the gas condition acquisition device is arranged on the side of the device close to the user. Since the oil smoke that is harmful to the user is the part of the oil smoke that diffuses outside the working area of the range hood, only when the oil smoke outside the working area and within the user's operating range is detected can it be accurately determined whether the air curtain device needs to be turned on. The air curtain range hood introduced in the present invention can also effectively prevent the air curtain device from being opened frequently, or further prevent the airflow of the air curtain device from affecting the oil smoke absorption of the range hood.

[0093] 2. The air curtain range hood described in this invention utilizes multiple, distributed gas condition acquisition devices, eliminating the situation where a single detection device's results cannot fully characterize the ambient atmosphere surrounding the range hood. After all, the ambient atmosphere surrounding a range hood is much wider than the range hood's operating area, and using a single detection device to monitor the ambient atmosphere within this area can easily lead to errors.

[0094] 3. Through the air curtain range hood introduced in the present invention, the gas condition acquisition device is designed as a multi-module design. During detection, the gas conditions of the atmosphere around the range hood can be characterized from multiple angles by characterizing different atmospheric components such as oil smoke and water vapor. Different thresholds are 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 first oil smoke threshold, the air curtain device is controlled to open to prevent oil smoke from harming the user. When the detection result of the moisture acquisition module reaches the corresponding first moisture threshold, the air curtain is controlled to open to prevent water vapor from blocking the user's sight, wherein the first moisture threshold is preferably greater than the first oil smoke threshold. A small amount of water vapor will not affect the user.

[0095] 4. The air curtain range hood described in the present invention combines the detection results of the moisture acquisition module and the oil fume acquisition module. If neither reaches a corresponding first threshold, a corresponding second threshold is considered, where the first threshold is greater than the corresponding second threshold. The need to activate the air curtain device is determined based on the combined moisture and oil fume levels.

[0096] 5. The air curtain range hood described in the present invention divides the gas condition acquisition devices into different levels, and the gas condition acquisition devices at different levels detect the gas composition at different locations. The gas composition at different locations determines whether it is necessary to activate the air curtain device. At least a portion of the first-level gas condition acquisition device for detecting the gas environment outside the range hood is disposed outside the range hood, preferably on the side of the range hood facing the user, so that its detection range is the user's environment, rather than within the range hood's suction range. When the first-level detection device detects that the oil smoke reaches a certain threshold, the air curtain device is activated.

[0097] 6. The air curtain range hood described in this invention divides the gas condition acquisition device into two modules for detecting different substances. This allows the boundary conditions for activating the air curtain device and the filter device to be set differently based on different atmospheric compositions. Preferably, the detection criteria for oil smoke should be more stringent, with the corresponding threshold for oil smoke being lower than the corresponding threshold for water vapor. This makes the gas condition acquisition device more sensitive to oil smoke than water vapor.

[0098] 7. The air curtain range hood described in this invention establishes further conditions for the activation of the secondary atmosphere acquisition unit. It is activated only when the air curtain is open, allowing the primary atmosphere acquisition unit to directly control the range hood's air curtain. The secondary atmosphere acquisition unit is also used to verify the detection results of the primary atmosphere acquisition unit. Furthermore, the secondary atmosphere acquisition unit in this invention primarily controls the activation status of the impurity removal unit within the air curtain. The filter device is activated only when the air curtain is open, preventing the secondary atmosphere acquisition unit from operating ineffectively.

[0099] 8. The air curtain range hood described in this invention features a design that controls the operating status of the impurity removal unit, enabling it to operate only when necessary. If the atmosphere cleanliness level does not reach a certain threshold, the impurity removal unit will not activate. Because the impurity removal unit is used to remove impurities from the air curtain, its presence can affect the effectiveness of the air curtain. This design improves the cleanliness of the air curtain while minimizing the effect of the air curtain.

[0100] 9. Through the air curtain range hood introduced in the present invention, the impurity removal unit is connected to the atmosphere detection unit, and the working state of the impurity removal unit is controlled by the detection result of the atmosphere detection unit. On the one hand, the function of self-adjustment of the equipment according to the use environment and conditions is realized. On the other hand, the detection of the atmosphere detection unit is inevitably more accurate than the user's own judgment, ensuring the timeliness of the implementation of the impurity removal function.

[0101] 10. Through the air curtain range hood introduced in the present invention, the impurity removal unit is connected to the secondary atmosphere acquisition unit. Since the impurity removal unit is mainly used to remove impurities in the air flow inside the air curtain, the detection results of the secondary atmosphere acquisition unit can more effectively characterize the atmosphere conditions at that location.

[0102] 11. The air curtain range hood described in this invention improves the airflow source of the air curtain device, allowing at least a portion of the exhaust gas from the range hood to be directed into the air curtain device as the airflow source. The air entering the air curtain device then possesses its own kinetic energy, rather than relying solely on the kinetic energy provided by the air curtain device. This significantly reduces the energy required to generate the air curtain airflow, contributing to energy conservation and environmental protection.

[0103] 12. With the air curtain range hood described in the present invention, since the air curtain airflow originates from the air surrounding the cooker, this air, even after traveling a longer path, remains closer to the temperature surrounding the cooker. This temperature of the air curtain, even when in direct contact with the human body, does not cause discomfort. Furthermore, this temperature significantly minimizes the impact of the air curtain airflow on the food being cooked, preventing it from cooling the food.

[0104] 13. With the air curtain range hood introduced in the present 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 pushed into the air curtain device more efficiently, avoiding the obstruction of the airflow caused by the structure of the air curtain device itself, which causes the airflow to lose its flow performance.

[0105] 14. The air curtain range hood introduced in the present invention designs the position of the air inlet of the air curtain device. Since the airflow kinetic energy is the largest at the position of the air outlet of the fan device, the airflow performance at this position is also the most stable. Moreover, under the condition that a purification device is provided inside the range hood, the airflow at this position is a fully purified gas, and the oil smoke contained therein is very limited, which is more suitable as an air curtain airflow.

[0106] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0107] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive effort. In the accompanying drawings:

[0108] Figure 1 This is a cross-sectional view of the structure of an air curtain range hood in an embodiment of the present invention as viewed from the left;

[0109] Figure 2 It is a schematic diagram of the structure of an air curtain range hood in an embodiment of the present invention when viewed from above.

[0110] In the figure: 10. Air curtain range hood; 1. Outer shell; 11. Shell member; 21. Air inlet of air curtain device; 23. Air outlet of air curtain device; 24. Air inlet portion; 25. Transition portion; 26. Guide portion; 27. Air storage portion; 31. Fan; 32. Air duct of fan device; 33. Air outlet of fan device; 4. Smoke collecting chamber cover; 5. Closing member; 6. Debris removal unit.

[0111] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0112] In order to make the purpose, 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 in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0113] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0114] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0115] The air curtain range hood introduced in the present invention includes an air curtain device that forms an air curtain and a gas condition acquisition device that detects the gas condition of the surrounding environment and / or the internal gas condition of the device; the gas condition acquisition device is connected to the air curtain device, and controls the working state of the air curtain device and / or prompts the detection result and / or prompts the operation suggestion according to the detection result. Through the air curtain range hood introduced in the present invention, the opening conditions of the air curtain device are designed. A gas condition acquisition device is added to the range hood, and the opening of the air curtain device is controlled by the detection result of the gas condition acquisition device. The air curtain device is only turned on / off when the detection result of the gas condition acquisition device reaches the corresponding threshold. The opening / closing of the air curtain device can be an operation automatically performed by the system, and the air curtain range hood can also display the detection result and / or display the operation suggestion on the device / send it to the user, allowing the user to decide how to operate. This realizes human-computer interaction.

[0116] Example 1

[0117] The air curtain range hood introduced in this embodiment, the gas condition acquisition device includes an oil fume acquisition module for detecting the oil fume content. The gas condition acquisition device is used to detect the atmosphere composition in the surrounding environment. When it is detected that the oil fume content in the atmosphere composition in the surrounding environment reaches the corresponding threshold, the device automatically turns on the air curtain device to prevent the oil fume from affecting the user. Alternatively, the range hood will prompt the user with the detection results or operation suggestions for the user. The detection results include the detected oil fume content, the production location of the oil fume, the temperature of the oil fume, etc. The operation suggestions include prompting the user to turn on the air curtain device, prompting the user to turn on the impurity removal unit (recorded in subsequent embodiments), the opening angle / wind speed / flow / level of the air curtain device, the opening degree / level of the impurity removal unit, etc.

[0118] Preferably, the gas condition acquisition device is arranged on a side of the range hood close to the user.

[0119] Furthermore, the gas condition acquisition device of the air curtain range hood in this embodiment includes a moisture acquisition module for detecting the moisture composition in the surrounding environment. When the detection result of the moisture acquisition module reaches the corresponding threshold, the device automatically turns on the air curtain device to prevent overheating or excessive concentration of water vapor from affecting the user. Alternatively, the range hood prompts the user with the detection result or operation suggestions for the user. The detection result includes the detected moisture content, the production location of the moisture, the temperature of the water vapor, etc. The operation suggestions include prompting the user to turn on the air curtain device, prompting the user to turn on the impurity removal unit (recorded in subsequent embodiments), the opening angle / wind speed / flow / level of the air curtain device, the opening degree / level of the impurity removal unit, etc.

[0120] Example 2

[0121] The difference between the air curtain range hood introduced in this embodiment and the above embodiments is that the gas condition acquisition device is used to detect the gas condition in the air duct of the air curtain device. When it is detected that the oil smoke content in the atmosphere composition in the surrounding environment reaches the corresponding threshold, the device automatically turns on the air curtain device to prevent the oil smoke from affecting the user. Alternatively, the range hood will prompt the user with the detection results or operation suggestions for the user. The detection results include the detected oil smoke content, the production location of the oil smoke, the temperature of the oil smoke, etc. The operation suggestions include prompting the user to turn on the air curtain device, prompting the user to turn on the impurity removal unit (recorded in subsequent embodiments), the opening angle / wind speed / flow / level of the air curtain device, the opening degree / level of the impurity removal unit, etc.

[0122] Furthermore, the gas condition acquisition device of the air curtain range hood in this embodiment includes a moisture acquisition module for detecting the moisture composition in the air duct. When the detection result of the moisture acquisition module reaches the corresponding threshold, the device automatically turns on the air curtain device to prevent overheating or excessive concentration of water vapor from affecting the user. Alternatively, the range hood prompts the user with the detection result or operation suggestions for the user. The detection result includes the detected moisture content, the production location of the moisture, the temperature of the water vapor, etc. The operation suggestions include prompting the user to turn on the air curtain device, prompting the user to turn on the impurity removal unit (recorded in subsequent embodiments), the opening angle / wind speed / flow / level of the air curtain device, the opening degree / level of the impurity removal unit, etc.

[0123] Example 3

[0124] The difference between the air curtain range hood introduced in this embodiment and the above embodiments is that the range hood includes a primary atmosphere acquisition unit for detecting the gas conditions of the surrounding environment and / or a secondary atmosphere acquisition unit for detecting the gas conditions in the air duct of the air curtain device; both detection units are respectively provided with an oil fume acquisition module for detecting the oil fume content and / or a moisture acquisition module for detecting the moisture content.

[0125] Among them, when the first-level atmosphere acquisition unit detects that the ambient gas contains / does not contain oil smoke, the air curtain device is controlled to be opened / closed. Alternatively, when the first-level atmosphere acquisition unit detects that the oil smoke content in the ambient gas reaches / does not reach the threshold, the air curtain device is controlled to be opened / closed. The two conditions for opening the air curtain are adjustable. They can be set by the user. The range hood can prompt the user to select the opening condition of the air curtain when the device is turned on. It can be seen that the first air curtain opening condition is more sensitive and provides more comprehensive protection for the user. The second air curtain opening condition requires reaching the threshold, which is relatively not very sensitive, but can avoid repeated opening of the air curtain device and avoid increasing the workload of the air curtain device.

[0126] Furthermore, the secondary atmosphere acquisition unit of the air curtain range hood in this embodiment is only activated when the air curtain device is turned on. Here, the activation condition of the secondary atmosphere acquisition unit is limited to the secondary atmosphere acquisition unit only starting to operate when the range hood's air curtain device is turned on. The air curtain may not be activated due to two situations. The first situation is that the range hood determines that it does not need to be activated at this time. There is no oil smoke in the external environment of the range hood, so there is no need to activate the air curtain. Furthermore, the situation inside the range hood does not need to be detected, and there must be no oil smoke here. The second situation is that the user chooses not to activate the air curtain based on the options provided by the range hood. The user determines that it is not necessary to activate the air curtain, so there is no need to activate the air curtain.

[0127] When the air curtain device is turned on, there is a situation where oil smoke and moisture need to be isolated from the user. The secondary atmosphere acquisition unit starts to detect the atmosphere inside the air curtain range hood to control the working state of the impurity removal unit (described in subsequent embodiments).

[0128] Example 4

[0129] The air curtain range hood described in this embodiment differs from the above-mentioned embodiments in that the air curtain device includes a decontamination unit for purifying the gas in its internal air duct. The decontamination unit can be used to remove substances such as oil smoke and particles from the air duct of the air curtain device. This ensures the cleanliness of the air curtain airflow generated by the air curtain device and improves the user experience. In addition, the decontamination unit in this embodiment is not turned on and performs its decontamination function in real time. The decontamination unit includes a decontamination unit switch for controlling the operating state of the decontamination unit. The operating state of the decontamination unit includes: the decontamination unit is on and off.

[0130] Furthermore, the decontamination unit switch in this embodiment can be a manual switch and / or an automatic switch. When the range hood determines that the decontamination unit needs to be activated, it automatically activates. Alternatively, the device may provide the user with information about the current air curtain airflow composition, impurity content, a decontamination unit activation suggestion, and a decontamination unit activation level suggestion, allowing the user to make their own decision. Alternatively, the user can manually activate the decontamination unit when the device determines that it is not necessary.

[0131] Furthermore, the impurity removal unit in this embodiment is connected to the gas condition acquisition device, and the working state of the impurity removal unit is controlled by the detection result of the gas condition acquisition device.

[0132] Furthermore, the impurity removal unit in this embodiment is connected to the primary atmosphere acquisition unit. When the primary atmosphere acquisition unit detects that the air curtain device should be turned on, and the detection result of the primary atmosphere acquisition unit determines that the impurity removal unit should be turned on, the impurity removal unit is turned on while the air curtain device is operating. When the detection result of the primary atmosphere acquisition unit determines that the impurity removal unit should not be turned on, the impurity removal unit is turned off while the air curtain device is operating.

[0133] Example 5

[0134] The air curtain range hood introduced in this embodiment is different from the above embodiments in that the impurity removal unit is connected to the secondary atmosphere acquisition unit.

[0135] When the secondary atmosphere acquisition unit detects that the content of oil smoke, water vapor, and other substances in the airflow within the air curtain device reaches a corresponding threshold, and the detection result of the secondary atmosphere acquisition unit determines that the impurity removal unit should be turned on, the operation of turning on the impurity removal unit is implemented. When the detection result of the secondary atmosphere acquisition unit determines that the impurity removal unit should not be turned on, the operation of turning off the impurity removal unit is implemented.

[0136] Furthermore, since the secondary atmosphere acquisition unit starts working after the air curtain device is turned on, the secondary atmosphere acquisition unit does not need to further determine whether the air curtain device is working after obtaining the detection result.

[0137] Example 6

[0138] The air curtain range hood described in this embodiment differs from the previous embodiments in that the gas condition acquisition device includes a switch unit that controls its operating state and a position acquisition unit that detects the user's location. The position acquisition unit is connected to the switch unit and controls its operating state. The gas condition acquisition device in this embodiment is not always active during operation; it is controlled by the position acquisition unit. When the position acquisition unit determines that the gas condition acquisition device should be activated, it activates and performs detection.

[0139] Furthermore, in this embodiment, when the location acquisition unit detects that the distance between the user and the air curtain range hood reaches or falls below a threshold, the switch unit controls the gas condition acquisition device to turn on or off. Preferably, the gas condition acquisition device is disposed on the side of the air curtain range hood closest to the user, preferably on the front side of the range hood.

[0140] Example 7

[0141] like Figure 1 、 Figure 2As shown, the difference between the air curtain range hood introduced in this embodiment and the above-mentioned embodiment is that the air curtain range hood includes a fan device for generating airflow, and at least part of the airflow required for the air curtain device to form the air curtain is provided by the fan device. The fan device is a general term for a series of devices and components, including a fan 31 for generating airflow. Preferably, the fan device also includes a fan device housing that encloses the air duct of the fan device. With the air curtain range hood introduced in the present invention, since the gas source of the air curtain airflow is the air around the stove, even if this part of the air is transmitted through a longer path, it is closer to the temperature around the stove. Even if the air curtain at this temperature is in direct contact with the human body, the user will not feel discomfort caused by the temperature difference. In addition, this temperature can significantly reduce the impact of the air curtain airflow on the food being cooked, avoiding the cooling effect on the food.

[0142] Furthermore, the air duct of the air curtain device in this embodiment is connected to the air duct of the fan device.

[0143] Furthermore, at least part of the power required to form the air curtain in the air curtain device of this embodiment is provided by the fan device. The air curtain device is disposed within the cavity formed by the housing 1 of the air curtain range hood, and the air curtain device has a structure with a through-hole extending therethrough. The air curtain range hood described in this embodiment improves the air curtain device's airflow source, allowing at least a portion of the exhaust gas from the range hood to be directed into the air curtain device as the air curtain's airflow source. The gas entering the air curtain device thus possesses its own kinetic energy, rather than relying solely on the kinetic energy provided by the air curtain device. This significantly reduces the energy required to form the air curtain airflow, contributing to energy conservation and environmental protection. Furthermore, the air curtain device described in this embodiment is located within the range hood, effectively concealing it and preventing it from detracting from the range hood's appearance. Furthermore, this design shortens the distance between the air curtain device and the fan device, ensuring that the airflow power generated by the fan device can efficiently deliver air into the air curtain device and discharge it through the air curtain device's outlet, thus achieving the air curtain's function before the airflow performance significantly decreases.

[0144] Example 8

[0145] like Figure 1 、 Figure 2As shown, the air curtain range hood described in this embodiment differs from the above embodiments in that: in this air curtain range hood, the air inlet 21 of the air curtain device is connected to the air duct 32 of the fan device, and the air inlet 21 of the air curtain device is arranged to face the direction of the air flow 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 direction of the air flow in the air duct 32 of the fan device is in the range of 90° to 180°. Through the air curtain range hood described in this embodiment, the direction of the air curtain device's air inlet is designed so that the gas exhausted by the fan device can be more efficiently pushed into the air curtain device, avoiding the air curtain device's own structure blocking the airflow and causing the airflow to lose its flow performance.

[0146] Embodiment 9

[0147] like Figure 1 、 Figure 2 As shown, the air curtain range hood described in this embodiment differs from the previous embodiment in that the air curtain device includes an internally connected air inlet portion 24 and a guide portion 26. The air inlet portion 24 is connected to the fan device, allowing the airflow within the fan device to be directed 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 inlet portion 24 and / or the guide portion 26 are primarily duct-shaped structures.

[0148] Furthermore, in the range hood curtain described in this embodiment, the air inlet 24 and the guide 26 are connected by a transition section 25. The axis of the air inlet 24 and / or the guide 26 extends primarily in a straight line, and the transition section 25 has a certain bend angle, thereby changing the direction of the airflow within the air curtain device. Preferably, the angle between the extension direction of the guide 26 along the internal airflow direction and the air outlet direction of the air curtain device is in the range of 90° to 180°. Preferably, the transition section 25 is duct-shaped; the air inlet 24, transition section 25, and guide 26 are integrally arranged. The range hood curtain described in this embodiment features a well-designed structure for the air curtain device. The multi-segment design allows each segment to perform its function while ensuring interoperability with other segments. The main function of the air inlet is to effectively separate a portion of the airflow within the fan device. Its extension direction is aligned with the airflow direction within the fan device, allowing the separated airflow to enter the air curtain device without changing its flow direction, significantly reducing the resistance to airflow entering the air curtain device. The design of the guide portion and the transition portion can effectively change the direction of airflow, and the guide portion is preferably a tubular structure extending in a straight direction, which can reduce the airflow resistance in the guide portion.

[0149] Furthermore, in the curtain range hood introduced in this embodiment, the air curtain device includes an air storage portion 27 for adjusting the gas distribution inside the air curtain device, and the air outlet 23 of the air curtain device is provided on the air storage portion 27. The air storage portion 27 constitutes a part of the air duct of the air curtain device.

[0150] Furthermore, the air curtain range hood described in this embodiment has an annular cavity inside the air storage portion 27, and the annular cavity of the air storage portion 27 surrounds the air curtain range hood suction port ( Figure 1 The lower middle part of the structure shown is set.

[0151] The air curtain range hood described in this embodiment incorporates an air storage unit. The airflow drawn from the fan assembly is directed into the air storage unit, redistributing the airflow so that it is discharged from the air curtain assembly at the appropriate location. The air storage unit is designed as an annular structure. By positioning the range hood's air intake at the center of the annular structure, the air curtain assembly's air outlet can be positioned at multiple locations around the intake. This allows for flexible placement of the air curtain assembly's air outlet, allowing it to be installed even in relatively narrow or complex locations.

[0152] Furthermore, in the curtain range hood introduced in this embodiment, the components of the cavity inside the air storage part 27 include a smoke collecting chamber cover plate 4 that encloses the smoke collecting chamber, a shell member 11 connected to the smoke collecting chamber cover plate 4 on all sides, and a closure member 5 that is arranged relative to the smoke collecting chamber cover plate 4 and connected to the shell member 11. The number of shell members 11 and / or smoke collecting chamber cover plate 4 and / or closure member 5 is at least one. Preferably, the guide portion 26 passes through the closure member 5 / smoke collecting chamber cover plate 4 / shell member 11 and is connected to the cavity inside the air storage part 27. The air storage part 27 is designed to be formed by the smoke collecting chamber cover plate 4 of the equipment and a part of the outer shell partition, which effectively utilizes the space of the equipment and gives the equipment components more functions, avoiding the setting of the air curtain device to increase the structural burden of the equipment.

[0153] Furthermore, the air curtain range hood described in this embodiment features an adjustable airflow direction at the air curtain device's air outlet 23. An air deflector (not shown) is positioned at the air curtain device's air outlet 23, and the deflector's extension direction is adjustable. Preferably, the air curtain device has multiple air outlets 23, each of which is arranged around the smoke collection chamber of the air curtain range hood.

[0154] Example 10

[0155] The air curtain range hood described in this embodiment differs from the above-described embodiments in that it includes an air curtain device for forming an air curtain, and a gas condition acquisition device for acquiring the composition and content of gas components. The gas condition acquisition device includes a first gas condition acquisition device for acquiring the composition and content of gas components in the working area of the air curtain range hood, and a second gas condition acquisition device for acquiring the composition and content of gas components in the non-working area of the air curtain range hood. The working area includes at least a portion of the air suction range of the air curtain range hood's air intake port, and the non-working area includes the top and / or front and / or left and / or right and / or bottom of the air curtain range hood, as well as at least a portion of each of the above.

[0156] The air curtain range hood described in this embodiment defines a working area and a non-working area. The environment surrounding the range hood is divided into at least two parts. The area near the air intake is considered the working area. This area is within the range of the range hood's suction power, and the gas in this area is drawn into the range hood to a greater extent. The gas in this area can represent the target gas composition of the range hood.

[0157] Furthermore, the air curtain range hood described in this embodiment includes a fan device that generates airflow. A control device is connected to the air curtain device and / or the gas condition acquisition device, and adjusts the working state of the air curtain device and / or prompts a judgment result and / or prompts an operation suggestion based on the data acquired by the gas condition acquisition device. The control device controls the working state of the gas condition acquisition device and / or the air curtain device based on the working state of the fan device. Preferably, the working state of the air curtain device includes an open and / or closed state. When the fan device is in the closed state, the control device turns off the gas condition acquisition device and / or the air curtain device.

[0158] Example 11

[0159] The air curtain range hood of this embodiment differs from the above embodiments in that the control device is adjusted based on data generated simultaneously by the air curtain device and / or the gas condition acquisition device. Preferably, the data is real-time data, and the adjustment is real-time.

[0160] Alternatively, the control device adjusts the air curtain device and / or the gas condition acquisition device based on data generated during the same time period. Preferably, the data is calculated over a specified time period, and the adjustment is intermittent. Furthermore, preferably, the specified time period includes time automatically acquired by the device and / or time set by the user.

[0161] In the air curtain range hood described in this embodiment, the data acquired by the gas condition acquisition device can be acquired in real time, while the control device can be based on real-time data or calculated data within a specific time period, such as average value calculation. This design enriches the device's control methods, and the specific implementation method can be automatically set by the system or selected by the user.

[0162] Example 12

[0163] The air curtain range hood of this embodiment differs from the above-described embodiment in that the first gas condition acquisition device generates first data based on the gas in the working area, and the control device adjusts the operating state of the air curtain device and / or displays the acquisition result and / or provides operational suggestions based on the first data. Preferably, when the first data reaches / does not reach a corresponding threshold, the air curtain device is controlled to open / close and / or the acquisition result and / or operational suggestions are provided.

[0164] With the air curtain range hood introduced in this embodiment, when the first data is used alone as the basis for investigation, if the first data reaches the corresponding threshold value (corresponding to a situation where the oil smoke is more serious), the air curtain is selected to be turned on regardless of the second data. At this time, considering that the oil smoke is already very serious, if it is not turned on, the risk of oil smoke leaking to the non-working area will increase, affecting the user's use environment. As the range hood works to a certain moment, the relationship between the first data and the second data meets the conditions for closing the air curtain. For example, when the oil smoke content reflected by the second data is greater than the oil smoke content reflected by the first data, the control device will close the air curtain or suggest the user to close the air curtain, so as to absorb the oil smoke in the non-working area into the range hood, thereby achieving overall environmental improvement.

[0165] Example 13

[0166] The air curtain range hood of this embodiment differs from the above-described embodiment in that: the first gas condition acquisition device generates first data based on the gas in the working area, and the second gas condition acquisition device generates second data based on the gas in the non-working area; the control device makes a judgment based on the first data, the second data, and corresponding thresholds, and adjusts the operating state of the air curtain device and / or prompts the judgment result and / or prompts an operational suggestion based on the judgment result. Preferably, if the comparison result between the first data and the second data exceeds the corresponding threshold, the air curtain device is adjusted to open and / or the judgment result and / or prompts a suggestion to open the air curtain device.

[0167] Furthermore, if the comparison result between the first data and the second data does not exceed a corresponding threshold, the air curtain device is adjusted to be closed and / or a judgment result is prompted and / or a prompt is given to recommend closing the air curtain device. At least a portion of the second gas condition acquisition device is disposed on a side of the air curtain range hood facing a user.

[0168] Using the air curtain range hood described in this embodiment, the first and second data are compared. If the difference between the two is small, it indicates that there is also oil smoke in the non-working area. In this case, the air curtain is less effective in protecting the user. In this case, the air curtain is closed or the user is advised to close it to remove the oil smoke in the non-working area. Furthermore, the present invention defines the non-working area as the area in front of the range hood and stove, which helps to fully incorporate the user's environment into the assessment.

[0169] Example 14

[0170] The difference between the air curtain range hood of this embodiment and the above-mentioned embodiment is that: the impurity removal device includes an impurity removal unit arranged in the air curtain device, and an impurity removal ability judgment device judges the impurity removal ability of the impurity removal device through data obtained by the gas condition acquisition device. When the impurity removal device shows insufficient impurity removal ability, it may be that the impurity removal device needs to be replaced and cleaned, or the oil smoke near the stove is heavy. At this time, the fan device of the equipment is adjusted to increase the air suction capacity. The present invention further introduces an impurity removal device / impurity removal unit with adjustable impurity removal ability. When combined with the impurity removal device / impurity removal unit introduced in the present invention, the air curtain range hood can control the impurity removal ability of the impurity removal device / impurity removal unit through the results obtained by the gas condition acquisition device to ensure the impurity removal effect under different usage conditions.

[0171] Furthermore, the gas condition acquisition device in this embodiment includes a working area gas condition acquisition device for obtaining the composition / content of the gas components in the working area of the air curtain range hood and an air duct gas condition acquisition device for obtaining the composition / content of the gas components in the air duct of the air curtain range hood. The air duct includes the air curtain air duct of the air curtain device. The gas condition acquisition device is designed to include at least two types, namely a working area gas condition acquisition device and an air duct gas condition acquisition device. A comprehensive investigation of the target gas composition conditions in the working area and the gas composition conditions in the air duct can effectively characterize the cleaning effect of the impurity removal device on the target substance. At this time, the air duct gas condition acquisition device is preferably arranged on the side where the impurity removal device is connected to the air duct outlet.

[0172] Furthermore, the duct gas condition acquisition device in this embodiment includes a duct gas condition acquisition device for acquiring the composition / content of gas within the air curtain duct. The duct gas condition acquisition device includes a first duct gas condition acquisition device for acquiring the airflow in the air curtain duct on the side of the air curtain duct moving toward the impurity removal unit. The impurity removal capability determination device compares the data acquired by the first duct gas condition acquisition device with the data acquired by the working area gas condition acquisition device. When the result of the comparison does not exceed a threshold, the impurity removal capability of the impurity removal device is considered to be good. The air curtain range hood described in this embodiment incorporates a first duct gas condition acquisition device in the air curtain duct to assess the quality of the air curtain airflow. The assessment result can be either good air curtain airflow quality, suitable for normal use, or poor air curtain airflow quality, in which case the impurity removal capability of the impurity removal device and / or impurity removal unit is adjusted accordingly based on the first duct gas condition acquisition device, or the user is notified of the poor quality. Furthermore, when the impurity removal capability of the impurity removal device and / or impurity removal unit is adjusted to the system-set limit, the user is notified of the current situation and prompted to conduct an inspection.

[0173] The difference between the air curtain range hood described in this embodiment and the above embodiment is that: the air duct gas condition acquisition device includes an air duct gas condition acquisition device for obtaining the gas component composition / content in the air curtain duct; the air duct gas condition acquisition device includes a second air duct gas condition acquisition device for obtaining the side of the air flow in the air curtain duct that moves away from the impurity removal unit.

[0174] Furthermore, the impurity removal ability judgment device in this embodiment compares the data obtained by the second air duct gas condition acquisition device with the data obtained by the working area gas condition acquisition device. When the result of the comparison between the two does not exceed the threshold, the impurity removal ability of the impurity removal device and / or impurity removal unit is good.

[0175] A second air duct gas condition acquisition device is added to the air duct of the air curtain device. Comparing the data acquired by the second air duct gas condition acquisition device with the data acquired by the working area gas condition acquisition device can further evaluate the impurity removal capabilities of the impurity removal device and / or impurity removal unit. The evaluation results are more intuitive.

[0176] The duct gas condition acquisition device includes an air curtain duct gas condition acquisition device for acquiring the gas component composition / content in the air curtain duct; the air duct gas condition acquisition device includes a first air duct gas condition acquisition device for acquiring the side of the air curtain duct moving toward the impurity removal unit; the air duct gas condition acquisition device includes a second air duct gas condition acquisition device for acquiring the side of the air curtain duct moving away from the impurity removal unit.

[0177] Furthermore, the impurity removal capability determination device in this embodiment compares the data acquired by the first duct gas condition acquisition device with the data acquired by the second duct gas condition acquisition device. When the result of the comparison does not exceed a threshold, the impurity removal capability of the impurity removal unit is good. By comparing the data between the first duct gas condition acquisition device and the second duct gas condition acquisition device, the impurity removal capability of the impurity removal unit can be independently evaluated.

[0178] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this patent can make slight changes or modifications to equivalent embodiments using the above technical content without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. An air curtain range hood, characterized in that: include: An air curtain device, used for forming an air curtain; A gas condition acquisition device, for acquiring the gas condition of the surrounding environment and / or the internal gas condition of the equipment, connected to the air curtain device, and controlling the working state of the air curtain device and / or prompting the acquired result and / or prompting operation suggestions based on the acquired result; The gas condition acquisition device includes a primary atmosphere acquisition unit for acquiring the gas condition of the surrounding environment and / or a secondary atmosphere acquisition unit for acquiring the gas condition in the air duct of the air curtain device; At least part of the primary atmosphere acquisition unit is arranged outside the air curtain range hood; At least a portion of the secondary atmosphere acquisition unit is disposed inside the air curtain range hood; When the primary atmosphere acquisition unit acquires that the ambient gas contains / does not contain oil smoke, the air curtain device is controlled to be turned on / off and / or the acquired result and / or operation suggestion are prompted; When the primary atmosphere acquisition unit acquires that the oil smoke content of the ambient gas reaches / does not reach a threshold, the air curtain device is controlled to be turned on / off and / or the acquired result and / or operation suggestion are prompted; The secondary atmosphere acquisition unit is turned on only when the air curtain device is turned on.

2. The air curtain range hood according to claim 1, characterized in that: The gas condition acquisition device includes an oil smoke acquisition module for acquiring oil smoke content and / or a moisture acquisition module for acquiring moisture content.

3. The air curtain range hood according to claim 2, characterized in that: The gas condition includes: gas component composition and / or content.

4. The air curtain range hood according to claim 2, characterized in that: The internal gas includes the gas in the air duct inside the air curtain range hood for the oil smoke to flow.

5. The air curtain range hood according to claim 2, characterized in that: The internal air includes the air in the air duct of the air curtain device.

6. The air curtain range hood according to claim 2, characterized in that: The acquisition method includes detection.

7. The air curtain range hood according to claim 1, characterized in that: The primary atmosphere acquisition unit and / or the secondary atmosphere acquisition unit includes an oil fume acquisition module for acquiring oil fume content and / or a moisture acquisition module for acquiring moisture content.

8. The air curtain range hood according to any one of claims 1 to 7, characterized in that: The working state of the air curtain device includes: an open state and a closed state of the air curtain device.

9. The air curtain range hood according to any one of claims 1 to 7, characterized in that: The air curtain device includes an impurity removal unit for purifying the gas in the internal air duct thereof.

10. The air curtain range hood according to claim 9, characterized in that: The impurity removal unit includes an impurity removal unit switch for controlling the working state of the impurity removal unit.

11. The air curtain range hood according to claim 9, characterized in that: The working state of the impurity removal unit includes: an on state and an off state of the impurity removal unit.

12. The air curtain range hood according to claim 9, characterized in that: The impurity removal unit switch is a manual switch / automatic switch.

13. The air curtain range hood according to claim 9, characterized in that: The impurity removal unit is connected to the gas condition acquisition device, and controls the working state of the impurity removal unit and / or prompts the acquisition result and / or prompts operation suggestions based on the acquisition result of the gas condition acquisition device.

14. The air curtain range hood according to claim 13, characterized in that: The impurity removal unit is connected to the primary atmosphere acquisition unit and / or the secondary atmosphere acquisition unit.

15. The air curtain range hood according to claim 13, characterized in that: When the primary atmosphere acquisition unit and / or the secondary atmosphere acquisition unit acquires that the ambient gas / the gas inside the equipment contains / does not contain oil smoke, the impurity removal unit is controlled to be turned on / off and / or the acquired result and / or operation suggestion are prompted.

16. The air curtain range hood according to claim 13, characterized in that: When the primary atmosphere acquisition unit and / or the secondary atmosphere acquisition unit obtains that the oil fume content in the ambient gas / gas inside the equipment reaches / does not reach the threshold, the impurity removal unit is controlled to be turned on / off and / or prompt the obtained results and / or prompt operation suggestions.

17. The air curtain range hood according to claim 13, characterized in that: The air curtain range hood according to any one of claims 1 to 6 is characterized in that the air curtain range hood comprises a fan device that provides power for extracting oil fumes, and at least part of the power for the airflow required for the air curtain to form the air curtain is provided by the fan device.

18. The air curtain range hood according to claim 17, characterized in that: The air duct of the air curtain device is communicated with the air duct of the fan device.

19. The air curtain range hood according to claim 17, characterized in that: At least a portion of the air curtain device is disposed in a cavity formed by the outer shell of the air curtain range hood.

20. The air curtain range hood according to claim 17, characterized in that: The air curtain device has a through cavity inside.

21. The air curtain range hood according to claim 1, characterized in that: The gas condition acquisition device includes a switch unit for controlling its working state, and a position acquisition unit for acquiring the user's position. The position acquisition unit is connected to the switch unit and controls its working state.

22. The air curtain range hood according to claim 21, characterized in that: When the position acquisition unit acquires that the distance between the user and the air curtain range hood reaches / does not reach a threshold, the switch unit controls the gas condition acquisition device to turn on / off and / or prompts the acquisition result and / or prompts operation suggestions.

23. The air curtain range hood according to claim 21, characterized in that: The gas condition acquisition device is arranged on the side of the air curtain range hood close to the user.

24. The air curtain range hood according to claim 17, characterized in that: The air inlet of the air curtain device is communicated with the air duct of the fan device.

25. The air curtain range hood according to claim 24, characterized in that: The air inlet of the air curtain device is arranged to face the air flow direction in the air duct of the fan device.

26. The air curtain range hood according to claim 24, characterized in that: The angle between the direction of the air inlet of the air curtain device and the direction of the air flow in the air duct of the fan device is in the range of 90° to 180°.

27. The air curtain range hood according to claim 1, characterized in that: The air curtain range hood includes a fan device that provides power for sucking oil smoke. The air curtain device includes an air inlet part and a guide part that are internally connected. The air inlet part is connected to the fan device so that the airflow in the fan device is introduced into the air curtain device.

28. The air curtain range hood according to claim 27, characterized in that: At least a portion of the air inlet portion is disposed in an air duct of the fan device.

29. The air curtain range hood according to claim 27, characterized in that: The air inlet portion and / or the guide portion is a pipe-like structure.

30. The air curtain range hood according to claim 27, characterized in that: At least part of the air duct of the air curtain device is formed by the smoke collecting chamber cover and the outer shell of the air curtain range hood.

31. The air curtain range hood according to claim 27, characterized in that: The air curtain device includes an air storage portion for adjusting the distribution of gas inside the air curtain device. The air storage portion is provided with an air outlet of the air curtain device. The air storage portion constitutes a part of the air duct of the air curtain device.

32. The air curtain range hood according to claim 31, characterized in that: 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.

33. The air curtain range hood according to claim 31, characterized in that: The components of the cavity inside the air storage part include a smoke collecting chamber cover plate surrounding the smoke collecting chamber, a shell component connected to the smoke collecting chamber cover plate around the periphery thereof, and a sealing member arranged opposite to the smoke collecting chamber cover plate and connected to the shell component.

Images