Air curtain range hood

Abstract

The present invention discloses an air curtain range hood comprising: an air curtain device for forming an air curtain; a gas condition acquisition device, including a first gas condition acquisition device for acquiring the gas condition in the working area of the air curtain range hood and a second gas condition acquisition device for acquiring the gas condition in the non-working area of the air curtain range hood; and a control device for adjusting the working state of the air curtain device and / or providing a result of determining the working state of the air curtain device and / or providing operational suggestions based on data acquired by the gas condition acquisition device. The air curtain range hood introduced in the present invention improves the conditions for activating the air curtain device, activating it 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 comprises a first gas condition acquisition device for acquiring the gas condition of the working area of the air curtain range hood and a second gas condition acquisition device for acquiring the gas condition of the non-working area of the air curtain range hood;

[0009] The control device adjusts the working state of the air curtain device according to the data obtained by the gas condition obtaining device and / or prompts the working state judgment result of the air curtain device and / or prompts operation suggestions.

[0010] The present invention is further configured such that: the working area includes at least a portion of the air suction range of the air curtain range hood's air suction port;

[0011] Preferably, the gas condition includes gas component composition and / or content;

[0012] Preferably, the control device is connected to the air curtain device and / or the gas condition acquisition device;

[0013] 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.

[0014] The present invention is further configured as follows: the air curtain range hood includes a fan device for generating airflow;

[0015] Preferably, the control device controls the working state of the gas condition acquisition device and / or the air curtain device according to the working state of the fan device;

[0016] Preferably, the working state of the air curtain device includes an open and / or closed state;

[0017] Preferably, when the fan device is in an off state, the control device turns off the gas condition acquisition device and / or the air curtain device.

[0018] The present invention is further configured such that: the adjustment of the control device is based on data generated at the same time by the air curtain device and / or the gas condition acquisition device;

[0019] Preferably, the data is real-time data;

[0020] Preferably, the adjustment is real-time adjustment.

[0021] The present invention is further configured such that: the adjustment of the control device is based on data generated by the air curtain device and / or the gas condition acquisition device during the same time period;

[0022] Preferably, the data is a calculated value within a specified time;

[0023] Preferably, the adjustment is intermittent adjustment;

[0024] Preferably, the prescribed time includes a time automatically acquired by the device and / or a time set by the user.

[0025] The present invention is further configured such 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;

[0026] 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.

[0027] 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 corresponding thresholds, and adjusts the working state of the air curtain device and / or prompts the judgment result and / or prompts an operation suggestion based on the judgment result;

[0028] Preferably, if the comparison result between the first data and the second data exceeds the corresponding threshold, the opening of the air curtain device is adjusted and / or the result of the judgment is prompted and / or a prompt is given to suggest opening the air curtain device;

[0029] Preferably, if the comparison result 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.

[0030] The present invention is further configured such that: at least a portion of the second gas condition acquisition device is arranged on a side of the air curtain range hood facing the user;

[0031] Preferably, the side facing the user is the front side.

[0032] 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;

[0033] Preferably, the air duct of the air curtain device is in communication with the air duct of the fan device;

[0034] 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;

[0035] Preferably, the air curtain device is arranged in a cavity formed by the shell of the air curtain range hood;

[0036] Preferably, the air curtain device has a structure with a through cavity inside.

[0037] 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;

[0038] 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;

[0039] 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°.

[0040] 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.

[0041] 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;

[0042] Preferably, the transition portion is in the shape of a pipe;

[0043] 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;

[0044] Preferably, the impurity removal unit is connected to the guide portion;

[0045] 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;

[0046] 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;

[0047] 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;

[0048] Preferably, the impurity removal unit is connected to a side of the guide portion close to the air storage portion;

[0049] Preferably, the impurity removal unit includes an impurity removal unit switch for controlling the working state of the impurity removal unit;

[0050] Preferably, the impurity removal unit switch controls whether the impurity removal unit is connected to the air duct of the air curtain device;

[0051] 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.

[0052] The present invention is further configured such that the air outlet direction of the air curtain device is adjustable;

[0053] 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;

[0054] 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.

[0055] 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;

[0056] Preferably, the switch portion is at least partially provided on the guide portion;

[0057] Preferably, the switch portion realizes on / off control through the pressure difference at both ends thereof.

[0058] 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;

[0059] 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.

[0060] 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;

[0061] 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.

[0062] Preferably, the impurity removal capacity is adjusted by adjusting the working state of the impurity removal unit.

[0063] 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;

[0064] 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.

[0065] 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;

[0066] 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;

[0067] Preferably, the position acquisition unit is connected to the atmosphere acquisition switch unit and controls the working state of the gas condition acquisition device;

[0068] 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;

[0069] 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;

[0070] Preferably, the first distance is the distance between the air curtain outlet of the air curtain range hood and the user.

[0071] 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.

[0072] 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;

[0073] 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;

[0074] 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.

[0075] 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.

[0076] 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;

[0077] 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 obtained result and / or operation suggestion are prompted;

[0078] 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 obtained result and / or operation suggestion are prompted;

[0079] 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 obtained result and / or prompt operation suggestions.

[0080] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0081] 1. The air curtain range hood described in the present invention detects gas conditions in both the working and non-working areas of the range hood to determine the gas conditions at different locations. These conditions are then incorporated into the control conditions for the operating state of the air curtain device. The air curtain device is controlled by a control device, allowing control of the air curtain to be tailored to the operating environment.

[0082] 2. The air curtain range hood introduced in the present invention defines the working area and the non-working area. The environment around the range hood is divided into at least two parts. The area near the air intake port is regarded as the working area. This position is within the suction range of the range hood. The gas at this position is sucked into the range hood to a greater extent. The gas here can characterize the target gas composition of the range hood. The area that is almost beyond the range of the range hood's suction action is regarded as the non-working area. Since most users are active in the non-working area, and the non-working area is close to the working area, this position may be contaminated by oil smoke, so it is necessary to investigate it. The non-working area preferably does not include the area below the range hood. The area below the range hood is basically the working area.

[0083] 3. The air curtain range hood described in the present invention establishes a relationship between the gas condition acquisition device and the fan device. Therefore, the ambient air condition of the range hood is only monitored when the fan is operating. This design helps reduce the control burden of the equipment and prevents ineffective activation of equipment components, such as the air curtain device.

[0084] 4. With the air curtain range hood described in this invention, the data acquired by the gas condition acquisition device can be acquired in real time, and the control device can be based on real-time data or calculated data within a specific time period, such as an average value. 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.

[0085] 5. With the air curtain range hood introduced in the present invention, 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.

[0086] 6. Using the air curtain range hood described in the present invention, 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, and 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 where the user is located, in front of the range hood and stove, which helps to fully incorporate the user's environment into the scope of investigation.

[0087] 7. With the air curtain range hood introduced in the present invention, the role of the position acquisition unit is not only to include the user's position in one of the conditions for controlling the opening of the air curtain, but also to limit its specific mode of action. On the one hand, whether the air curtain is meaningful to the user can be judged by the air outlet of the air curtain or the distance between the device and the user. If the user is near the device, the oil smoke or water vapor may affect the user. Alternatively, when the user is near the device, the oil smoke or water vapor is very likely to affect the user. At this time, the blowing angle of the air curtain outlet, that is, the angle of the air curtain, is included in the investigation range, and corresponding calculations are performed. When the distance between the user's position and the air flow of the air curtain is close, it means that the air curtain may affect the user. At this time, the monitoring of the air flow quality of the air curtain is turned on to ensure the user experience.

[0088] 8. 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 condition inhaled by 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.

[0089] 9. With the air curtain range hood described in the present invention, the detection results of the moisture acquisition module and the oil fume acquisition module are combined. If both have not reached the corresponding first threshold, the corresponding second threshold is considered, and 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 conditions.

[0090] 10. 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, such that the corresponding threshold for oil smoke is lower than the corresponding threshold for water vapor, thereby making the gas condition acquisition device more sensitive to oil smoke than water vapor.

[0091] 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.

[0092] 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.

[0093] 13. The air curtain range hood described in the present invention effectively conceals the air curtain device by placing it inside the range hood, thus preventing it from affecting the range hood's appearance. Furthermore, this design shortens the distance between the air curtain device and the fan device, ensuring that the airflow 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 is significantly reduced.

[0094] 14. 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.

[0095] 15. The air curtain range hood introduced in the present invention has a designed position for 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.

[0096] 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

[0097] 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:

[0098] 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;

[0099] 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.

[0100] 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.

[0101] 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

[0102] 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.

[0103] 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.

[0104] 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.

[0105] The air curtain range hood introduced in the present invention comprises: an air curtain device for forming an air curtain, a gas condition acquisition device for acquiring the composition / content of gas components, and a control device connected to the air curtain device and / or the gas condition acquisition device, for adjusting the working state of the air curtain device and / or prompting the working state judgment result of the air curtain device and / or prompting operation suggestions based on the data acquired by the gas condition acquisition device. The gas condition acquisition device comprises a first gas condition acquisition device for acquiring the composition / 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 / content of gas components in the non-working area of the air curtain range hood. Through the air curtain range hood introduced in the present invention, the working area and non-working area of the range hood are detected separately to acquire the gas conditions at different locations, and the gas conditions at different locations are all included in the control conditions of the working state of the air curtain device. The control of the air curtain device is achieved through the control device, so that the control of the air curtain depends on the conditions of the working environment.

[0106] Example 1

[0107] The air curtain range hood described in this embodiment, the working area includes at least a part of the suction range of the air suction port of the air curtain range hood, and the non-working area includes the upper side and / or front side and / or left side and / or right side and / or lower side of the air curtain range hood and at least a part of the above parts.

[0108] 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.

[0109] Furthermore, the air curtain range hood described in this embodiment includes a fan device for generating airflow. The control device controls the operating state of the gas condition acquisition device and / or the air curtain device based on the operating state of the fan device. Preferably, the operating state of the air curtain device includes an on and / or off state. When the fan device is in the off state, the control device turns off the gas condition acquisition device and / or the air curtain device.

[0110] Example 2

[0111] The air curtain range hood of this embodiment differs from the above embodiment 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.

[0112] 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.

[0113] 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.

[0114] Example 3

[0115] The air curtain range hood described in 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 display the acquisition result and / or provide operational suggestions.

[0116] 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.

[0117] Example 4

[0118] The air curtain range hood described in 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.

[0119] 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.

[0120] 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.

[0121] Example 5

[0122] The air curtain range hood of this embodiment differs from the above embodiments in that: the air curtain range hood includes a position acquisition unit for acquiring the user's position. The gas condition acquisition device includes an atmosphere acquisition switch unit for controlling whether the gas condition acquisition device is turned on or off.

[0123] Furthermore, in the air curtain range hood of this embodiment, the position acquisition unit is connected to the atmosphere acquisition switch unit and controls the operating state of the gas condition acquisition device. When the position acquisition unit determines 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 displays the acquisition result and / or provides operational suggestions.

[0124] Furthermore, in the air curtain range hood of this embodiment, when the position acquisition unit acquires a first distance between the user and the air curtain range hood that reaches / does not reach a corresponding threshold, the impurity removal unit is controlled to increase / decrease impurity removal capability and / or to display the acquisition result and / or to provide operational suggestions. Preferably, the first distance is the distance between the air curtain outlet of the air curtain range hood and the user.

[0125] The air curtain range hood described in this embodiment incorporates a position acquisition unit. Preferably, the position acquisition unit is connected to the air curtain device. When the position acquisition unit detects a human body state reaching a threshold, the air curtain device is controlled to open. Alternatively, a switch unit is connected to the position acquisition unit. When the position acquisition unit detects a human body state reaching a threshold, the gas condition acquisition device is controlled to open. This control method helps reduce system burden.

[0126] Furthermore, in the air curtain range hood described in this embodiment, the location acquisition unit not only incorporates the user's location into one of the conditions for controlling the opening of the air curtain, but also defines its specific operation mode. On the one hand, the air curtain's air outlet or the distance between the device and the user can be used to determine whether the air curtain is useful to the user. If the user is near the device, the fumes or water vapor may affect the user. Alternatively, when the user is near the device, the fumes or water vapor are very likely to affect the user.

[0127] Example 6

[0128] The difference between the air curtain range hood described in this embodiment and the above embodiment is that the position acquisition unit controls the working state of the impurity removal unit and / or prompts the acquisition result and / or prompts operation suggestions based on the first distance and the result obtained by the gas condition acquisition device.

[0129] Furthermore, in the air curtain range hood in this embodiment, the position acquisition unit acquires the first distance and the result acquired by the gas condition acquisition device, and determines 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 suggestions are prompted.

[0130] like Figure 1 、 Figure 2 As shown, the air curtain range hood described in this embodiment differs from the above-described embodiment in that the air outlet 23 of the air curtain device has an adjustable airflow direction. An air deflector (not shown) is provided at the air curtain device's air outlet 23, and the direction of the air deflector's extension 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.

[0131] Furthermore, the air curtain range hood in this embodiment includes a position acquisition unit for acquiring a user's location. The position acquisition unit determines a second distance between the air curtain airflow and the user based on the acquired user location and the air outlet direction / angle of the air curtain device. Based on the second distance, the position acquisition unit controls the operating state of the impurity removal unit and / or the gas condition acquisition device, and / or displays an acquisition result and / or provides operational suggestions.

[0132] Furthermore, the air curtain range hood in this embodiment controls the impurity removal unit and / or the gas condition acquisition device to be turned on / off and / or prompts the acquisition results and / or prompts operation suggestions when the second distance reaches / does not reach the corresponding threshold.

[0133] Alternatively, when the second distance reaches / does not reach the corresponding threshold, the impurity removal unit is controlled to increase / reduce the impurity removal capability and / or prompt the acquisition result and / or prompt the operation suggestion. Preferably, the method for obtaining the angle of the air outlet direction of the air curtain device includes obtaining and / or detecting from the data of the system. The blowing angle of the air curtain outlet, that is, the angle of the air curtain, is included in the investigation range, and corresponding calculations are performed. When the distance between the user's position and the airflow of the air curtain is too close, it means that the air curtain may have an impact on the user. At this time, the monitoring of the airflow quality of the air curtain is turned on to ensure the user experience.

[0134] Example 7

[0135] like Figure 1 、 Figure 2 As shown, the air curtain range hood of this embodiment differs from the above-mentioned embodiments in that the air curtain range hood includes a fan device for generating airflow and an air curtain device for forming an air curtain. At least a portion of the airflow required by the air curtain device to form the air curtain is provided by the fan device, and the air duct of the air curtain device is connected to the air duct of 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 by the present invention, since the air curtain airflow is sourced from the air surrounding the stove, even if this air is transported over a longer path, it is closer to the temperature of the stove. Even if the air curtain at this temperature comes into direct contact with the human body, the user will not feel discomfort caused by the temperature difference. Furthermore, this temperature can significantly reduce the impact of the air curtain airflow on the food being cooked, avoiding the cooling effect on the food.

[0136] Example 8

[0137] like Figure 1As shown, the difference between the air curtain range hood of this embodiment and the above-mentioned embodiment is that at least part of the power of the air flow required for the air curtain device to form the air curtain is provided by the fan device, and the air curtain device is arranged in the cavity formed by the outer shell 1 of the air curtain range hood. The air curtain device is a structure with a through cavity inside. Through the air curtain range hood introduced in this embodiment, the air flow source of the air curtain device is improved, so that at least part of the gas exhausted by the range hood is introduced into the air curtain device to become the air flow source of the air curtain. The gas entering the air curtain device itself has kinetic energy, rather than simply relying on the kinetic energy provided by the air curtain device, which significantly reduces the energy required to form the air curtain airflow, which is beneficial to energy saving and environmental protection. Furthermore, the air curtain range hood introduced in this embodiment arranges the air curtain device inside the range hood, which can effectively hide the air curtain device and avoid affecting the appearance of the range hood. Moreover, this design can shorten the distance between the air curtain device and the fan device, ensuring that the airflow power generated by the fan device can efficiently deliver the airflow into the air curtain device and discharge it from the air outlet of the air curtain device, thereby realizing the function of the air curtain before the air flow performance is significantly reduced.

[0138] Furthermore, in the air curtain range hood described in this embodiment, 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 airflow 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 airflow 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 airflow being blocked by the air curtain device's own structure and causing the airflow to lose its flow performance.

[0139] Embodiment 9

[0140] like Figure 1 As shown, the air curtain range hood of this embodiment differs from the previous embodiment in that the air curtain device's air inlet 21 is connected to a location adjacent to the fan device's air outlet 33. Because the airflow kinetic energy is greatest at the fan device's air outlet 33, the airflow performance at this location is also the most stable. Furthermore, given the range hood's internal purification device, the airflow at this location is fully purified, containing very little oil smoke, making it more suitable for use as an air curtain.

[0141] Furthermore, the air curtain device described in this embodiment 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 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.

[0142] Furthermore, in the range hood curtain described in this embodiment, the air inlet portion 24 and the guide portion 26 are connected by a transition portion 25. The axis of the air inlet portion 24 and / or the guide portion 26 extends primarily in a straight line, and the transition portion 25 has a certain bend angle, thereby changing the direction of airflow within the air curtain device. Preferably, the angle between the extension direction of the guide portion 26 along the internal airflow direction and the air outlet direction of the air curtain device ranges from 90° to 180°. Preferably, the transition portion 25 is duct-shaped; the air inlet portion 24, transition portion 25, and guide portion 26 are integrally arranged.

[0143] The air curtain range hood described in this embodiment has a redesigned structure for the air curtain device. The multi-segment design allows each segment to perform its function while ensuring compatibility with other segments. The main function of the air inlet section is to effectively separate part of the airflow within the fan device. Its extension direction is set along the direction of the airflow within the fan device. The separated airflow can enter the air curtain device without changing the flow direction, significantly reducing the resistance of the airflow entering the air curtain device. The design of the guide section and transition section can effectively change the flow direction of the airflow, and the guide section is preferably a tubular structure extending in a straight line, which can reduce the airflow resistance in the guide section.

[0144] Example 10

[0145] like Figure 1 As shown, the difference between the air curtain range hood of this embodiment and the above embodiment is that the air curtain device includes an air storage part 27 for adjusting the internal gas distribution thereof, the air outlet 23 of the air curtain device is provided on the air storage part 27, and the air storage part 27 constitutes a part of the air duct of the air curtain device.

[0146] 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.

[0147] 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.

[0148] 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.

[0149] Furthermore, in the curtain range hood introduced in this embodiment, the air outlet direction of the air outlet 23 of the air curtain device is adjustable. An air guide plate (not shown in the figure) is provided at the air outlet 23 of the air curtain device, and the extension direction of the air guide plate is adjustable. Preferably, the number of the air outlet 23 of the air curtain device is multiple, and the air outlets 23 of the multiple air curtain devices are arranged around the smoke collecting chamber of the air curtain range hood. The air curtain device includes a decontamination unit 6 for purifying the gas in the internal air duct thereof. Preferably, the decontamination unit 6 is connected to the guide portion 26. The addition of the decontamination unit design can further ensure the cleanliness of the air curtain airflow.

[0150] 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 for forming an air curtain; a gas condition acquisition device comprising a first gas condition acquisition device for acquiring the gas condition of the working area of the air curtain range hood and a second gas condition acquisition device for acquiring the gas condition of the non-working area of the air curtain range hood; a control device for adjusting the working state of the air curtain device and / or prompting a result of judging the working state of the air curtain device and / or prompting an operation suggestion according to the data acquired by the gas condition acquisition device; The first gas condition acquisition device generates first data based on the gas in the work area, and when the first data reaches / does not reach a corresponding threshold, controls the air curtain device to be turned on / off and / or prompts an acquisition result and / or prompts an operation suggestion; The second gas condition acquiring 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 comparison result between the first data and the second data exceeds the corresponding threshold, adjusting the opening of the air curtain device and / or prompting the judgment result and / or prompting a suggestion to open the air curtain device; If the comparison result 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: The gas condition includes gas component composition and / or content.

3. The air curtain range hood according to claim 1, characterized in that: The control device is connected to the air curtain device and / or the gas condition acquisition device.

4. The air curtain range hood according to claim 1, characterized in that: The air curtain range hood comprises a fan device which provides power for absorbing oil smoke.

5. The air curtain range hood according to claim 4, characterized in that: The control device controls the working state of the gas condition acquisition device and / or the air curtain device according to the working state of the fan device.

6. The air curtain range hood according to claim 4, characterized in that: The working state of the air curtain device includes an open state and / or a closed state.

7. The air curtain range hood according to claim 4, characterized in that: When the fan device is in the off state, the control device turns off the gas condition acquisition device and / or the air curtain device.

8. The air curtain range hood according to claim 1, characterized in that: The adjustment of the control device is based on the data generated by the air curtain device and / or the gas condition acquisition device at the same time.

9. The air curtain range hood according to claim 8, characterized in that: The data is real-time data.

10. The air curtain range hood according to claim 9, characterized in that: The adjustment is real-time adjustment.

11. The air curtain range hood according to claim 1, characterized in that: The adjustment of the control device is based on the data generated by the air curtain device and / or the gas condition acquisition device during the same time period.

12. The air curtain range hood according to claim 11, characterized in that: The data are calculated values within a specified time.

13. The air curtain range hood according to claim 12, characterized in that: The adjustment is intermittent adjustment.

14. The air curtain range hood according to claim 12, characterized in that: The prescribed time includes a time automatically acquired by the device and / or a time set by the user.

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

16. The air curtain range hood according to claim 15, characterized in that: The side facing the user is the front side.

17. 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.

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: 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 17, characterized in that: The air curtain device has a through cavity inside.

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

22. The air curtain range hood according to any one of claims 1 to 17, characterized in that: The air curtain range hood comprises a fan device that provides power for sucking oil smoke, and the air inlet of the air curtain device is connected to the air duct of the fan device.

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

24. The air curtain range hood according to claim 22, 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°.

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