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 controlling the operating state of the air curtain device and / or providing a prompt of the surrounding gas condition and / or operational suggestions based on the gas condition in the air curtain range hood's surrounding environment. The air curtain range hood introduced in the present invention improves the conditions for activating the air curtain device, allowing it to activate only when needed, thereby 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] The gas condition acquisition device controls the working state of the air curtain device and / or prompts the gas condition of the surrounding environment and / or prompts operation suggestions according to the gas condition in the surrounding environment of the air curtain range hood.

[0009] The present invention is further configured such that: at least a portion of the gas condition acquisition device is disposed on a side of the air curtain range hood close to a user;

[0010] Preferably, there are multiple gas condition acquisition devices, and the multiple gas condition acquisition devices are arranged at intervals;

[0011] Preferably, the acquisition method includes detection;

[0012] Preferably, the gas condition includes: component composition and / or content;

[0013] Preferably, the side of the air curtain range hood closer to the user is the front side.

[0014] 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;

[0015] Preferably, the gas condition acquisition device has a plurality of oil fume acquisition modules and / or moisture acquisition modules, and the plurality of oil fume acquisition modules and / or moisture acquisition modules are arranged at intervals.

[0016] The present invention is further configured such that: the working state of the air curtain device includes: the open and / or closed state of the air curtain device;

[0017] Preferably, when the gas condition acquisition device acquires the presence / absence of oil smoke, the air curtain device is controlled to be opened / closed and / or the gas condition of the surrounding environment is prompted and / or operation suggestions are prompted.

[0018] The present invention is further configured as follows: the gas condition acquisition device includes a switch unit for controlling its working state;

[0019] Preferably, the air curtain range hood includes a fan device that provides power for extracting oil fumes, and the switch unit is connected to the fan device. When the working state of the fan device reaches a threshold, the switch unit controls the gas condition acquisition device to turn on / off and / or prompt the gas condition of the surrounding environment and / or prompt operation suggestions.

[0020] The present invention is further configured as follows: the gas condition acquisition device includes a first gas condition acquisition device that acquires the composition / content of gas components in the working area of the air curtain range hood and a second gas condition acquisition device that acquires the composition / content of gas components in the non-working area of the air curtain range hood; a control device connected to the air curtain device and / or the gas condition acquisition device adjusts the working state of the air curtain device and / or prompts a judgment result and / or prompts an operation suggestion based on data acquired by the gas condition acquisition device;

[0021] Preferably, the working area includes at least a portion of the suction range of the air intake of the air curtain range hood;

[0022] 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;

[0023] Preferably, the non-working area includes the upper side and / or the front side and / or the left side and / or the right side and / or the lower side of the air curtain range hood and at least a part of the above parts;

[0024] Preferably, the first gas condition acquisition device generates first data according to the gas in the working area, and the control device adjusts the working state of the air curtain device and / or prompts acquisition results and / or prompts operation suggestions according to the first data;

[0025] Preferably, when the first data reaches / does not reach a corresponding threshold, the air curtain device is controlled to be turned on / off and / or an acquisition result and / or an operation suggestion is prompted.

[0026] The present invention is further configured as follows: 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 the corresponding threshold value, and adjusts the working state of the air curtain device and / or prompts the acquisition result and / or prompts the operation suggestion according to the result of the judgment;

[0027] Preferably, if the difference between the first data and the second data exceeds a corresponding threshold, the air curtain device is adjusted to be turned on and / or a judgment result is prompted and / or a suggestion is given to turn on the air curtain device;

[0028] Preferably, if the difference between the first data and the second data does not exceed the corresponding threshold, the air curtain device is adjusted to be closed and / or the judgment result is prompted and / or a suggestion is given to close the air curtain device.

[0029] 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;

[0030] Preferably, when the result obtained by the oil smoke acquisition module exceeds / does not exceed the first oil smoke threshold, the air curtain device is controlled to be turned on / off and / or the gas condition of the surrounding environment is prompted and / or operation suggestions are prompted;

[0031] Preferably, when the result obtained by the moisture acquisition module exceeds / does not exceed the first moisture threshold, the air curtain device is controlled to be turned on / off and / or the gas condition of the surrounding environment is prompted and / or operation suggestions are prompted;

[0032] Preferably, when the result obtained by the oil fume acquisition module is less than the first oil fume threshold and greater than the second oil fume threshold, and the result obtained by the moisture acquisition module is greater than the second moisture threshold, the air curtain device is controlled to open and / or prompt the gas conditions of the surrounding environment and / or prompt operation suggestions.

[0033] The present invention is further configured such that at least part of the airflow required for the air curtain device to form the air curtain is provided by the fan device;

[0034] Preferably, the air duct of the air curtain device is in communication with the air duct of the fan device;

[0035] Preferably, the air curtain range hood includes 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;

[0036] Preferably, the air curtain device is arranged in a cavity formed by the shell of the air curtain range hood;

[0037] Preferably, the air curtain device has a structure with a through cavity inside.

[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, 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;

[0043] 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; the guide part passes through the closing member / smoke collection chamber cover plate / shell member and communicates with the cavity inside the air storage part;

[0044] Preferably, at least a portion of the air inlet is disposed in an air duct of the fan device;

[0045] Preferably, the air inlet portion and / or the guide portion is mainly a pipe-like structure.

[0046] 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.

[0047] The present invention is further configured such that: the air inlet portion and the guide portion are connected via a transition portion, the axis of the air inlet portion and / or the guide portion mainly extends in a straight line direction, and the transition portion has a certain bending angle, thereby changing the airflow direction in the air curtain device;

[0048] Preferably, the transition portion is in the shape of a pipe;

[0049] 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;

[0050] Preferably, the impurity removal unit is connected to the guide portion;

[0051] Preferably, the impurity removal unit is connected to a side of the guide portion close to the air storage portion;

[0052] Preferably, the impurity removal unit includes an impurity removal unit switch for controlling the working state of the impurity removal unit;

[0053] Preferably, the impurity removal unit switch controls whether the impurity removal unit is connected to the air duct of the air curtain device;

[0054] Preferably, the impurity removal unit switch controls the degree to which the impurity removal unit is connected to the air duct of the air curtain device.

[0055] The present invention is further configured such that the air outlet direction of the air curtain device is adjustable;

[0056] Preferably, an air guide plate is provided at the air outlet of the air curtain device, and the extension direction of the air guide plate is adjustable;

[0057] Preferably, the air curtain device has a plurality of air outlets, and the plurality of air outlets of the air curtain device are arranged around the smoke collecting cavity of the air curtain range hood.

[0058] The present invention is further configured as follows: the air curtain device includes a switch portion for controlling the on / off of the air duct inside the air curtain device;

[0059] Preferably, the switch portion is at least partially provided on the guide portion;

[0060] Preferably, the switch portion realizes on / off control through the pressure difference at both ends thereof.

[0061] The present invention is further configured such that: the 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 of the air curtain device moving toward the impurity removal unit;

[0062] 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.

[0063] The present invention is further configured as follows: the atmosphere acquisition unit includes a second air duct gas condition acquisition device for acquiring a side of the air flow in the air curtain duct that moves away from the impurity removal unit;

[0064] 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 gas condition of the surrounding environment and / or provides operational suggestions.

[0065] Preferably, the impurity removal capacity is adjusted by adjusting the working state of the impurity removal unit.

[0066] The present invention is further configured as follows: the 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;

[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 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.

[0068] 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;

[0069] Preferably, the angle is 90°;

[0070] Preferably, when the impurity removal unit is closed, the sheet structure flips to be parallel to the airflow direction;

[0071] 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.

[0072] 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;

[0073] Preferably, the at least two impurity removal modules can at least partially overlap when in the open state;

[0074] Preferably, the impurity removal unit adjusts its filtering capacity level by changing the number of impurity removal modules in an open state.

[0075] 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;

[0076] 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;

[0077] Preferably, the position acquisition unit is connected to the atmosphere acquisition switch unit and controls the working state of the gas condition acquisition device;

[0078] 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;

[0079] 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;

[0080] Preferably, the first distance is the distance between the air curtain outlet of the air curtain range hood and the user.

[0081] 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 component composition and / or content 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 suggestion is 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 suggestion is not prompted.

[0082] 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;

[0083] 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;

[0084] 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.

[0085] 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.

[0086] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0087] 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.

[0088] 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.

[0089] 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.

[0090] 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.

[0091] 5. 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 impurity removal unit to be set differently based on different atmosphere 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.

[0092] 6. 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 the specified threshold, the impurity removal unit will not activate. Because the impurity removal unit is used to remove impurities from the air curtain airflow, its presence can affect the effectiveness of the air curtain airflow to a certain extent. This design improves the cleanliness of the air curtain airflow while minimizing the impact on its effectiveness.

[0093] 7. 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.

[0094] 8. 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.

[0095] 9. 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.

[0096] 10. 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 by the structure of the air curtain device itself, which causes the airflow to lose its flow performance.

[0097] 11. 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.

[0098] 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

[0099] 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:

[0100] Figure 1This 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;

[0101] 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.

[0102] 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.

[0103] 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

[0104] 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.

[0105] 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.

[0106] 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.

[0107] 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 acquires the composition and / or content of the surrounding gas components; 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 results and / or prompts operation suggestions based on the results acquired. 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 results of the gas condition acquisition device. The air curtain device is only turned on / off when the detection results of the gas condition acquisition device reach 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 results and / or display operation suggestions on the device / send them to the user, allowing the user to decide how to operate. This realizes human-computer interaction.

[0108] Example 1

[0109] The air curtain range hood described 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 obtained results or operation suggestions for the user. The obtained 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, the opening angle / wind speed / flow / level of the air curtain device, the opening degree / level of the impurity removal unit, etc.

[0110] Preferably, the gas condition acquisition device is arranged on a side of the range hood close to the user.

[0111] 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 will prompt the user with the obtained results or operation suggestions for the user. The obtained results include 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, the opening angle / wind speed / flow / level of the air curtain device, the opening degree / level of the impurity removal unit, etc.

[0112] Example 2

[0113] The difference between the air curtain range hood described in this embodiment and the above embodiments is that when the atmosphere detection unit detects that the ambient gas contains / does not contain oil smoke, the air curtain device is controlled to open / close. Alternatively, when the atmosphere detection unit detects that the oil smoke content in the ambient gas reaches / does not reach a threshold, the air curtain device is controlled to open / close. 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 a 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.

[0114] Example 3

[0115] The air curtain device described in this embodiment differs from the above-mentioned embodiments in that it 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 in 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 in real time to perform the decontamination function. The decontamination unit includes a decontamination unit switch for controlling the working state of the decontamination unit. The working state of the decontamination unit includes: the decontamination unit is on and off.

[0116] 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.

[0117] 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.

[0118] Furthermore, the impurity removal unit in this embodiment is connected to the atmosphere detection unit. When the atmosphere detection unit detects that the air curtain device should be turned on, and the detection result of the atmosphere detection 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 atmosphere detection 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.

[0119] Example 4

[0120] The air curtain device described in this embodiment differs from the previous embodiment 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 position. 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 on when the smoking machine is in operation; it is controlled by the position acquisition unit. When the position acquisition unit determines that the gas condition acquisition device should be turned on, it turns on and performs its detection work.

[0121] 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.

[0122] Example 5

[0123] The air curtain device described in this embodiment differs from the previous embodiment in that the air curtain device is controlled to open when the detection result of the oil fume acquisition module is less than the first oil fume threshold and greater than the second oil fume threshold, and the detection result of the moisture acquisition module is greater than the second moisture threshold. The air curtain range hood described in this embodiment combines the detection results of the moisture acquisition module and the oil fume acquisition module. If neither reaches the corresponding first threshold, the corresponding second threshold is considered, where the first threshold is greater than the corresponding second threshold. The combined moisture and oil fume detection results determine whether the air curtain device needs to be opened.

[0124] Example 6

[0125] like Figure 1 、 Figure 2 As 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.

[0126] Furthermore, the air duct of the air curtain device in this embodiment is connected to the air duct of the fan device.

[0127] 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.

[0128] Example 7

[0129] like Figure 1 、 Figure 2 As 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.

[0130] Example 8

[0131] 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.

[0132] 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.

[0133] 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. The air storage portion 27 is provided with an air outlet 23 of the air curtain device. The air storage portion 27 constitutes a part of the air duct of the air curtain device.

[0134] 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 in the figure is set.

[0135] 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.

[0136] 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.

[0137] 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.

[0138] 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 controlling the working state of the air curtain device and / or prompting the gas condition of the surrounding environment and / or prompting operation suggestions based on the gas condition in the surrounding environment of the air curtain range hood; 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 the corresponding threshold value; If the difference between the first data and the second data exceeds a corresponding threshold, adjusting the air curtain device to open and / or prompting a judgment result and / or prompting a suggestion to open the air curtain device; If the difference between the first data and the second data does not exceed the corresponding threshold, adjusting the air curtain device to close and / or prompting the judgment result and / or prompting a suggestion to close the air curtain device; The working area includes at least a portion of the suction range of the air intake of the air curtain range hood; The non-working area includes the upper side and / or the front side and / or the left side and / or the right side and / or the lower side of the air curtain range hood.

2. The air curtain range hood according to claim 1, characterized in that: At least a portion of the gas condition acquisition device is arranged on a side of the air curtain range hood close to a user.

3. The air curtain range hood according to claim 2, characterized in that: There are multiple gas condition acquisition devices, and the multiple gas condition acquisition devices are arranged at intervals.

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

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

6. The air curtain range hood according to claim 2, characterized in that: The side of the air curtain range hood closer to the user is the front side.

7. 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.

8. The air curtain range hood according to claim 7, characterized in that: The gas condition acquisition device may have a plurality of oil fume acquisition modules and / or moisture acquisition modules, and the plurality of oil fume acquisition modules and / or moisture acquisition modules are arranged at intervals.

9. The air curtain range hood according to claim 1, characterized in that: The working state of the air curtain device includes: an open and / or closed state of the air curtain device.

10. The air curtain range hood according to claim 9, characterized in that: When the gas condition acquisition device acquires whether there is oil smoke or not, the air curtain device is controlled to be opened or closed and / or the gas condition of the surrounding environment is prompted and / or operation suggestions are prompted.

11. 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.

12. The air curtain range hood according to claim 11, characterized in that: The air curtain range hood includes a fan device that provides power for extracting oil fumes. The switch unit is connected to the fan device. When the working state of the fan device reaches a threshold, the switch unit controls the gas condition acquisition device to turn on / off and / or prompt the gas condition of the surrounding environment and / or prompt operation suggestions.

13. The air curtain range hood according to claim 1, characterized in that: The gas condition acquisition device includes the first gas condition acquisition device for acquiring the gas component composition / content of the working area of the air curtain range hood and the second gas condition acquisition device for acquiring the gas component composition / content of the non-working area of the air curtain range hood. The control device connected to the air curtain device and / or the gas condition acquisition device adjusts the working state of the air curtain device and / or prompts the judgment result and / or prompts the operation suggestion according to the data acquired by the gas condition acquisition device.

14. The air curtain range hood according to claim 13, characterized in that: The first gas condition acquisition device generates first data according to the gas in the working area, and the control device adjusts the working state of the air curtain device and / or prompts acquisition results and / or prompts operation suggestions according to the first data.

15. The air curtain range hood according to claim 13, characterized in that: When the first data reaches / does not reach the corresponding threshold, the air curtain device is controlled to be turned on / off and / or an acquisition result and / or an operation suggestion is prompted.

16. 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, and 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.

17. The air curtain range hood according to claim 16, 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.

18. The air curtain range hood according to claim 16, 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 16, characterized in that: The air curtain device is arranged in a cavity formed by the shell of the air curtain range hood.

20. The air curtain range hood according to claim 16, characterized in that: The air curtain device has a through cavity inside.

21. The air curtain range hood according to claim 16, characterized in that: The air inlet of the air curtain device is communicated with the air duct of the fan device.

22. The air curtain range hood according to claim 21, 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.

23. The air curtain range hood according to claim 21, 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°.

24. The air curtain range hood according to any one of claims 1 to 23, 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.

25. The air curtain range hood according to claim 24, 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.

26. The air curtain range hood according to claim 25, 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; the guide part passes through the closing part / smoke collection chamber cover plate / shell component and is connected to the cavity inside the air storage part.

27. The air curtain range hood according to claim 24, characterized in that: At least a portion of the air inlet portion is disposed in an air duct of the fan device.

28. The air curtain range hood according to claim 24, characterized in that: The air inlet portion and / or the guide portion is a pipe-like structure.

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