Air curtain temperature adjustable air curtain range hood

Abstract

The present invention discloses a temperature-adjustable air curtain range hood, comprising an air curtain device for forming an air curtain; and a temperature adjustment unit for controlling the temperature of the air curtain airflow generated by the air curtain device at various intervals. The temperature-adjustable air curtain range hood introduced in the present invention incorporates an air curtain temperature control unit, effectively enhancing the matching of the air curtain temperature with the operating environment, while also reducing noise and energy consumption, and 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 with adjustable air curtain temperature. 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 high suction power has become a major goal for major manufacturers. However, current range hoods still struggle to address issues such as incomplete extraction and fume overflow. During cooking, a small amount of fume escapes from the front of the machine, directly attacking the cook's clothes, hair, and face. This not only harms facial skin but, if inhaled over a long period of time, can also induce respiratory diseases, directly impacting the user's health. Therefore, to address this fume escape problem, existing range hoods often include an air curtain device to isolate the user from the escaping fume. However, air curtain devices require an air curtain fan to provide airflow, significantly increasing device noise and energy consumption. Furthermore, a separate control system for the air curtain device also increases the system and control burdens of the device. Furthermore, existing air curtain devices often draw air from the upper side of the range hood to form an air curtain airflow. This flowing air can significantly remove heat from the human body or around the cookware, resulting in poor user health or affecting the temperature around the pot, thereby impacting cooking results. Some air curtains even blow directly onto the dishes in the pot, which obviously affects the cooking of the dishes.

[0003] The present invention is proposed in view of this. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology and provide a wind curtain range hood with adjustable air curtain temperature, which adds an air curtain temperature control device, effectively enhancing the matching degree between the temperature of the air curtain and the use environment, and reducing equipment noise, reducing equipment energy consumption, and improving 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 with adjustable air curtain temperature, comprising:

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

[0008] The temperature adjustment part controls the temperature of the air curtain airflow generated by the air curtain device at different intervals.

[0009] The present invention is further configured such that: the temperature control method includes heating.

[0010] The present invention is further configured as follows: the temperature adjustment portion has at least two temperature adjustment positions;

[0011] Preferably, at least one of the at least two temperature adjustment positions is arranged at a position adjacent to the air outlet of the air curtain device.

[0012] The present invention is further configured as follows: the temperature adjustment portion includes a second temperature adjustment portion provided adjacent to the air outlet of the air curtain device;

[0013] Preferably, the temperature adjustment portion includes a first temperature adjustment portion provided between the second temperature adjustment portion and the air inlet of the air curtain device;

[0014] Preferably, the air curtain device has at least two air outlets, and the second temperature adjustment parts are provided in a one-to-one correspondence with the at least two air outlets.

[0015] The present invention is further configured as follows: the air curtain range hood includes a switch element for controlling the working state of the temperature adjustment part;

[0016] Preferably, the switch element includes a first switch element and a second switch element for controlling the first temperature adjustment part and the second temperature adjustment part respectively.

[0017] The present invention is further configured as follows: the air curtain range hood includes a temperature control member for adjusting the temperature of the temperature adjustment portion;

[0018] Preferably, the temperature control member includes a first temperature control member and a second temperature control member for controlling the first temperature adjustment portion and the second temperature adjustment portion respectively.

[0019] The present invention is further configured as follows: the air curtain range hood includes an air curtain temperature acquisition device for acquiring the air flow temperature at the air inlet and / or air outlet of the air curtain device and controlling the working state of the temperature adjustment part based on the acquired air flow temperature;

[0020] Preferably, the air curtain temperature acquisition device includes a first air curtain temperature acquisition device for acquiring the temperature at the air inlet of the air curtain device and / or a second air curtain temperature acquisition device for acquiring the temperature at the air outlet of the air curtain device.

[0021] The present invention is further configured such that: the air curtain temperature acquisition device is connected to the switch component and controls the switch operation of the switch component;

[0022] Preferably, when the air inlet temperature of the air curtain device acquired by the first air curtain temperature acquiring device is less than / greater than a target value, the first switch is controlled to be turned on / off;

[0023] Preferably, when the air outlet temperature of the air curtain device acquired by the second air curtain temperature acquiring device is less than / greater than a target value, the second switch component is controlled to be turned on / off.

[0024] The present invention is further configured such that: the air curtain temperature acquisition device is connected to the temperature control component and controls the temperature control operation of the temperature control component;

[0025] Preferably, when the air inlet temperature of the air curtain device acquired by the first air curtain temperature acquiring device is lower than the target value, the first temperature control component is controlled to increase / decrease the temperature of the first temperature adjusting portion;

[0026] Preferably, when the air outlet temperature of the air curtain device acquired by the second air curtain temperature acquiring device is lower than a target value, the second temperature controlling member is controlled to increase the temperature of the second temperature adjusting portion.

[0027] The present invention is further configured such that: at least a portion of the temperature adjustment portion is disposed outside / inside the air curtain duct of the air curtain device;

[0028] Preferably, the temperature adjustment part is circumferentially arranged on the outside / inside of the air curtain duct; preferably, the temperature adjustment part includes a heating coil.

[0029] The present invention further introduces an air curtain range hood with adjustable air curtain temperature, comprising an air curtain device for forming an air curtain, wherein the air curtain device comprises a temperature adjustment portion for adjusting the air curtain airflow temperature, and the temperature adjustment method is heating.

[0030] The present invention is further configured such that at least a portion of the temperature adjustment portion is disposed outside or inside the air curtain duct of the air curtain device.

[0031] The present invention is further configured such that: the air curtain range hood includes a switch component for controlling the working state of the temperature adjustment part.

[0032] The present invention is further configured such that: the air curtain range hood includes a temperature control component for adjusting the heating temperature of the temperature adjustment part.

[0033] The present invention is further configured as follows: the air curtain range hood includes an air curtain temperature acquisition device for acquiring the air flow temperature at the air inlet and / or air outlet of the air curtain device and controlling the working state of the temperature adjustment part based on the acquired air flow temperature;

[0034] Preferably, the air curtain temperature acquisition device is connected to the switch component and controls the switching operation of the switch component.

[0035] The present invention is further configured such that: the air curtain range hood controls the working state of the temperature adjustment portion according to the air flow temperature at the air inlet and / or air outlet of the air curtain device;

[0036] Preferably, the air curtain range hood includes an air curtain temperature acquisition device for obtaining the air flow temperature at the air inlet and / or air outlet of the air curtain device and controlling the working state of the temperature adjustment part based on it, and the air curtain temperature acquisition device is connected to the temperature control component.

[0037] 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 power of the airflow required for the air curtain device to form the air curtain is provided by the fan device;

[0038] Preferably, at least part of the gas required for the air curtain device to form the air curtain is provided by the fan device;

[0039] Preferably, the air duct of the air curtain device is in communication with the air duct of the fan device;

[0040] Preferably, the air curtain device is arranged in a cavity formed by the shell of the air curtain range hood;

[0041] Preferably, the air curtain device has a structure with a through cavity inside.

[0042] 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;

[0043] 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;

[0044] Preferably, the air inlet of the air curtain device is connected to a position adjacent to the air outlet of the fan device.

[0045] The present invention is further configured as follows: the air curtain device includes an air inlet portion and a guide portion that are internally connected, the air inlet portion is connected to the fan device, so that the airflow in the fan device is guided into the air curtain device;

[0046] Preferably, at least a portion of the air inlet is disposed in an air duct of the fan device;

[0047] Preferably, the air inlet portion and / or the guide portion is mainly a pipe-like structure;

[0048] Preferably, the air inlet portion and the guide portion are connected by a transition portion, the axis of the air inlet portion and / or the guide portion mainly extends in a straight direction, and the transition portion has a certain bending angle, thereby changing the airflow direction in the air curtain device;

[0049] Preferably, the air curtain device includes an air storage portion for adjusting the distribution of air inside the air curtain device, the air storage portion is provided with an air outlet of the air curtain device, and the air curtain device constitutes a part of the air duct of the air curtain device.

[0050] The present invention is further configured such that: the radial and / or axial dimensions of the guide portion are greater than the dimensions of the air inlet portion and / or transition portion in the corresponding directions;

[0051] Preferably, the temperature adjustment portion is provided at the end of the guide portion and / or at the air outlet of the air curtain device.

[0052] The present invention further introduces an air curtain range hood with adjustable air curtain temperature, comprising an air curtain device for forming an air curtain, wherein the range hood adjusts the temperature of the air curtain according to the ambient temperature.

[0053] The present invention is further configured to: when the ambient temperature data deviates from the ideal room temperature, start adjusting the temperature of the air curtain;

[0054] Preferably, the range hood comprises: a temperature condition acquisition device for acquiring the ambient temperature around the range hood and generating corresponding ambient temperature data; a temperature adjustment unit for adjusting the temperature of the air curtain; and an adjustment judgment device for controlling the degree / mode of adjustment of the air curtain temperature by the temperature adjustment unit according to the ambient temperature data.

[0055] Preferably, the ideal room temperature range includes: 20°C to 28°C;

[0056] Preferably, the adjustment method includes heating;

[0057] Preferably, the range hood controls the temperature of the air curtain to be within the ideal room temperature range and the difference from the ambient temperature does not exceed ±5°C;

[0058] Preferably, when the ambient temperature exceeds the ideal room temperature by ±5° C., the boundary value of the ideal room temperature range close to the ambient temperature is used as the target value for adjustment.

[0059] The present invention is further configured such that: the temperature adjustment unit and / or the adjustment judgment device determines the opening / closing timing of the air curtain device according to the working state of the air curtain device;

[0060] Preferably, when the air curtain device is turned on / off, the temperature adjustment part and / or the adjustment judgment device are turned on / off.

[0061] The present invention is further configured as follows: the range hood includes a fan device that provides power for extracting oil smoke, and the timing for adjusting the temperature of the air curtain is determined according to the working state of the fan device;

[0062] Preferably, the temperature condition acquisition device determines the opening / closing timing of the fan device for extracting oil smoke and providing power according to the working state of the range hood;

[0063] Preferably, when the fan device is turned on / off, the temperature condition acquisition device is turned on / off.

[0064] The present invention is further configured as follows: the range hood includes a position acquisition unit for acquiring a user's position, and the position acquisition unit generates corresponding position data according to the user's position;

[0065] Preferably, the timing for adjusting the temperature of the air curtain is determined based on the relationship between the position data and the corresponding position threshold;

[0066] Preferably, when the position data is within a corresponding position threshold range, the temperature of the air curtain is adjusted.

[0067] The present invention is further configured such that: the position threshold is divided into a plurality of positions according to the range of oil smoke diffusion, and the range hood is adjusted to different degrees when the user is within different position threshold ranges;

[0068] Preferably, the position threshold comprises a first position threshold where the user is located in a working area adjacent to the range hood, and a second position threshold where the user is located away from the working area of ​​the range hood but not exceeding the indoor environment where the range hood is located;

[0069] Preferably, the working area of ​​the range hood includes the effective range of its air intake port.

[0070] The present invention is further configured such that: the range hood determines the degree of adjustment of the air curtain temperature according to the position data;

[0071] Preferably, the adjustment judgment device judges the degree of adjustment of the air curtain temperature based on the position data and the ambient temperature data;

[0072] Preferably, when the position data is within the range of the first position threshold, the degree of adjustment of the air curtain is greater than the degree of adjustment when the position data is within the range of the second position threshold.

[0073] The present invention is further configured such that: the temperature adjustment unit controls the temperature of the air curtain at different positions;

[0074] Preferably, the temperature adjustment portion has at least two temperature adjustment positions, and at least one of the at least two temperature adjustment positions is arranged at a position adjacent to the air outlet of the air curtain device.

[0075] The present invention is further configured as follows: the temperature adjustment portion includes a second temperature adjustment portion provided adjacent to the air outlet of the air curtain device;

[0076] Preferably, the temperature adjustment portion includes a first temperature adjustment portion provided between the second temperature adjustment portion and the air inlet of the air curtain device;

[0077] Preferably, the air curtain device has at least two air outlets, and the second temperature adjustment parts are provided in a one-to-one correspondence with the at least two air outlets.

[0078] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0079] 1. The temperature-adjustable air curtain range hood introduced in this invention incorporates a temperature adjustment unit for adjusting the air curtain airflow temperature. This adjusts the temperature of the air curtain produced by the device, preventing the user from being directly affected by excessively low or high temperatures. Furthermore, the temperature adjustment unit is composed of multiple independent temperature adjustment components, providing multi-level temperature adjustment of the air curtain airflow, ensuring efficient and uniform temperature adjustment.

[0080] 2. The temperature-adjustable air curtain range hood introduced in the present invention has a temperature adjustment unit structure. Preferably, at least a portion of the temperature adjustment unit is disposed outside the air curtain duct. The air curtain duct is used to provide a flow space for airflow. The design of the present invention can significantly reduce the obstruction of the temperature adjustment unit to the air curtain airflow, ensuring smooth airflow of the air curtain. Furthermore, the temperature adjustment unit introduced in the present invention is mainly composed of a heating coil, the structure of which is easy to adjust, increasing its applicability to the use environment.

[0081] 3. In the temperature-adjustable air curtain range hood described in the present invention, the temperature adjustment unit is connected to the switch element, thereby facilitating control of the operating state of the temperature adjustment unit. Furthermore, the temperature adjustment unit of the range hood described in the present invention is connected to the temperature control element, thereby facilitating control of the temperature adjustment unit's temperature.

[0082] 4. With the air curtain range hood with adjustable air curtain temperature introduced in the present invention, an air curtain temperature acquisition device is set in the air curtain duct to obtain the temperature of the air curtain airflow, and judge whether the temperature of the air curtain airflow meets the target value, and adjust the air curtain airflow temperature by controlling the switch component.

[0083] 5. In the air curtain range hood with adjustable air curtain temperature introduced in the present invention, the air curtain temperature acquisition device in the present invention is configured to be connected to a temperature control component. When the temperature of the air curtain airflow does not meet the target value, the temperature of the air curtain airflow is adjusted by the temperature control component.

[0084] 6. The temperature-adjustable air curtain range hood introduced 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.

[0085] 7. With the temperature-adjustable air curtain range hood described in this invention, since the air curtain's 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 allows the user to experience no discomfort from the temperature difference even when the air curtain comes into direct contact with the human body. Furthermore, this temperature significantly minimizes the impact of the air curtain's airflow on the food being cooked, preventing it from cooling the food.

[0086] 8. The temperature-adjustable air curtain range hood described in this invention effectively conceals the air curtain device within the range hood, 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 direct the airflow into the air curtain device and out through the air curtain device's outlet, thus achieving the air curtain's function before the airflow performance is significantly reduced.

[0087] 9. The temperature-adjustable air curtain range hood introduced in the present invention has an air inlet direction of the air curtain device designed so that the gas exhausted by the fan device can be pushed into the air curtain device more efficiently, thereby avoiding the air curtain device's own structure from blocking the airflow and causing the airflow to lose its flow performance.

[0088] 10. In the temperature-adjustable air curtain range hood introduced in the present invention, the second temperature adjustment portion and the air outlet of the air curtain device are set in a one-to-one correspondence. Normally, the air curtain device of the range hood may have more than one air outlet, so only the air curtain airflow at the required air outlet is heated to coordinate the temperature relationship between the environment and the air curtain airflow.

[0089] 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

[0090] 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:

[0091] 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;

[0092] 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.

[0093] 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. Decontamination unit; 7. Temperature adjustment portion.

[0094] 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

[0095] 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.

[0096] 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.

[0097] 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.

[0098] like Figures 1 to 2 As shown, the present invention introduces an air curtain temperature adjustable air curtain range hood, comprising:

[0099] An air curtain device is used to form an air curtain. A temperature adjustment unit is used to control the temperature of the air curtain airflow generated by the air curtain device at different intervals. The air curtain range hood with adjustable air curtain temperature introduced by the present invention adds a temperature adjustment unit for adjusting the temperature of the air curtain airflow to the air curtain device, thereby adjusting the temperature of the air curtain produced by the equipment. This prevents the air curtain with too low / high temperature from blowing directly onto the user and causing discomfort. In addition, the temperature adjustment part is composed of multiple parts that can independently realize the temperature adjustment function, and performs multi-stage temperature adjustment on the air curtain airflow to ensure the heating efficiency and uniformity of the temperature adjustment.

[0100] Example 1

[0101] like Figure 2 As shown, the temperature-adjustable air curtain range hood described in this embodiment has an air curtain, and the temperature control method includes heating. The temperature adjustment portion has at least two temperature adjustment positions, and at least one of the at least two temperature adjustment positions is set near the air outlet of the air curtain device. The final temperature of the air curtain airflow is already very stable when it reaches the air outlet, and it can be approximately considered that the air curtain airflow temperature at the air outlet is the final temperature of the air curtain airflow. Therefore, after the air curtain airflow is temperature-adjusted at the air outlet, it can be ensured that the temperature of the air curtain airflow remains basically unchanged before it comes into contact with the user during movement. However, since the contact between the air curtain airflow and the temperature adjustment portion at the air outlet is very short, adjusting the temperature of the air curtain airflow before the air curtain airflow comes into contact with the temperature adjustment portion at the air curtain outlet is beneficial to ensuring the temperature adjustment efficiency.

[0102] Example 2

[0103] The air curtain range hood of this embodiment differs from the above-mentioned embodiment in that the temperature adjustment portion includes a second temperature adjustment portion disposed adjacent to the air outlet of the air curtain device. The temperature adjustment portion includes a first temperature adjustment portion disposed between the second temperature adjustment portion and the air inlet of the air curtain device. The air curtain device has at least two air outlets, and the second temperature adjustment portion is disposed in a one-to-one correspondence with the at least two air outlets. The second temperature adjustment portion is disposed in a one-to-one correspondence with the air outlets of the air curtain device. Typically, the air curtain device of a range hood may have more than one air outlet. In this case, only the air curtain airflow at the required air outlet is heated to coordinate the temperature relationship between the ambient environment and the air curtain airflow.

[0104] Example 3

[0105] The air curtain range hood of this embodiment differs from the above-described embodiment in that it includes a switch element for controlling the operating state of the temperature adjustment unit. The switch element includes a first switch element and a second switch element, each of which controls the first and second temperature adjustment units, respectively. Different switch elements are used to control temperature adjustment units at different locations and levels. If there are multiple first and / or second temperature adjustment units, there are also multiple first and / or second switch elements, and each of the multiple first and / or second temperature adjustment units is controlled in a one-to-one manner. This helps ensure the sensitivity of the switch control.

[0106] Furthermore, the air curtain range hood in this embodiment includes an air curtain temperature acquisition device for obtaining the airflow temperature at the air inlet and / or air outlet of the air curtain device, and controlling the operating state of the temperature adjustment unit based on the airflow temperature at the air inlet / air outlet. The air curtain temperature acquisition device includes a first air curtain temperature acquisition device and / or a second air curtain temperature acquisition device located adjacent to the air curtain device's air inlet.

[0107] Furthermore, the air curtain temperature acquisition device of the air curtain range hood in this embodiment is connected to the switch component and controls the switching operation of the switch component. The first air curtain temperature acquisition device is connected to the first switch component, and when the air inlet temperature of the air curtain device acquired by the first air curtain temperature acquisition device is less than the target value, the first switch component is controlled to be turned on. The second air curtain temperature acquisition device is connected to the second switch component, and when the air outlet temperature of the air curtain device acquired by the second air curtain temperature acquisition device is less than the target value, the second switch component is controlled to be turned on. An air curtain temperature acquisition device is set in the air curtain duct to acquire the temperature of the air curtain airflow, and determine whether the temperature of the air curtain airflow meets the target value, and adjust the temperature of the air curtain airflow by controlling the switch component. When the temperature of the air curtain does not meet the target temperature requirement, the switch component is controlled to be turned on, and then the temperature adjustment is implemented.

[0108] Example 4

[0109] The air curtain range hood of this embodiment differs from the above embodiments in that the air curtain range hood includes a temperature control element for adjusting the temperature of the temperature adjustment portion, wherein the temperature control element includes a first temperature control element and a second temperature control element respectively controlling the first temperature adjustment portion and the second temperature adjustment portion.

[0110] Furthermore, the air curtain temperature acquisition device of the air curtain range hood in this embodiment is connected to the temperature control unit and controls the temperature control operation of the temperature control unit. A first air curtain temperature acquisition device is connected to the first temperature control unit. When the air curtain device's air inlet temperature acquired by the first air curtain temperature acquisition device is less than a target value, the first temperature control unit is controlled to increase the temperature of the first temperature adjustment unit. A second air curtain temperature acquisition device is connected to the second temperature control unit. When the air curtain device's air outlet temperature acquired by the second air curtain temperature acquisition device is less than a target value, the second temperature control unit is controlled to increase the temperature of the second temperature adjustment unit. This facilitates control of the temperature adjustment unit's temperature.

[0111] Example 5

[0112] The difference between the air curtain range hood of this embodiment and the above-mentioned embodiment is that: the air curtain temperature-adjustable air curtain range hood in this embodiment has a temperature adjustment part 7 circumferentially arranged on the outside / inside of the air curtain device. The air curtain can be heated from multiple directions to ensure uniform heating. The temperature adjustment part includes a heating coil. The temperature adjustment part introduced in this embodiment is mainly composed of a heating coil, and the structure of the heating coil is easy to adjust, which increases the applicability to the use environment. At least part of the temperature adjustment part 7 is arranged on the outside of the air curtain device. The structure of the temperature adjustment part is set, and preferably, at least part of the temperature adjustment part is set on the outside of the air curtain duct. The air curtain duct is used to provide a flow space for the flow of air. The design of the present invention can greatly reduce the obstruction of the temperature adjustment part to the air flow of the air curtain, ensuring the smooth flow of the air curtain air flow.

[0113] Example 6

[0114] 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 at the fan device's air outlet 33 is the highest, the airflow performance there is also the most stable. Furthermore, given the range hood's internal purification device, the airflow there is fully purified, containing very little oil smoke, making it more suitable for use as an air curtain.

[0115] 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.

[0116] 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.

[0117] 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.

[0118] Example 7

[0119] 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.

[0120] 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.

[0121] 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.

[0122] 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.

[0123] 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.

[0124] Example 8

[0125] like Figure 1 As shown, the air curtain range hood of this embodiment differs from the above-mentioned embodiments in that the air curtain device includes a decontamination unit 6 for purifying the air in its internal air duct. Preferably, the decontamination unit 6 is connected to the guide portion 26. The addition of the decontamination unit further ensures the cleanliness of the airflow through the air curtain.

[0126] Furthermore, in the range hood curtain introduced in this embodiment, the impurity removal unit 6 is connected to the side of the guide portion 26 close to the air storage portion 27. The impurity removal unit is kept away from the air inlet of the air curtain device to a certain extent, so as to avoid the impurity removal unit from hindering the air flow entering the air curtain device.

[0127] Furthermore, the impurity removal unit of the range hood curtain introduced in this embodiment includes an impurity removal unit switch (not shown in the figure) for controlling the working state of the impurity removal unit. The impurity removal unit switch controls whether the impurity removal unit is connected to the air duct of the air curtain device. When the impurity removal unit switch is triggered to the on state, the impurity removal unit is connected to the air duct of the air curtain device to realize the impurity removal function. When the impurity removal unit switch is triggered to the off state, the impurity removal unit is connected out of the air duct of the air curtain device. The impurity removal unit is connected to the air duct to reduce the air flow resistance in the air curtain device and increase the air flow of the air curtain device.

[0128] Furthermore, in the curtain range hood introduced in this embodiment, 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. The impurity removal unit in this embodiment includes a multi-layer structure, and each layer can achieve a certain impurity removal function. Preferably, the structures of the multi-layer impurity removal units are the same, and the number of layers of impurity removal units connected to the air duct of the air curtain device can be controlled by the impurity removal unit switch. When the multi-layer impurity removal units are connected to the air duct, the impurity removal function is achieved together to ensure the impurity removal effect. When the number of layers of impurity removal units connected to the air duct is small, it can ensure that the fluidity loss of the airflow is minimized. The impurity removal unit can be a device with a filtering function.

[0129] Furthermore, in the range hood curtain described in this embodiment, the impurity removal unit can be a deflectable sheet structure disposed within the air duct of the air curtain device. When the impurity removal function is being performed, the sheet structure flips to form a certain angle (preferably perpendicular) with the airflow direction; when the impurity removal function is not required, the sheet structure flips to be parallel to the airflow direction.

[0130] Embodiment 9

[0131] The difference between the air curtain range hood of this embodiment and the above embodiment is that the air curtain device includes a switch part for controlling the opening and closing of the internal air duct. With the addition of the switch part for controlling the opening and closing of the air duct, the user can choose whether to have the air curtain or not.

[0132] Furthermore, the curtain range hood introduced in this embodiment has a switch portion arranged on the guide portion. Preferably, the switch portion realizes on / off control through the pressure difference at its two ends. The switch portion of the air curtain device is designed as a pressure-controlled switch, so that when the wind pressure in the fan device reaches a certain level, the device automatically opens the air curtain device. On the one hand, the increase in the wind pressure in the fan device indicates that the suction force of the range hood has increased, and the fan is adjusted to a higher level, and the risk of oil smoke overflow increases. At this time, the cooperation of the air curtain is required, and the air curtain device automatically opens. When the wind pressure in the fan device drops to a certain value, the switch portion is closed.

[0133] Example 10

[0134] The air curtain range hood of this embodiment differs from the above embodiments in that at least a portion of the switch portion of the air curtain device is disposed on the outside of the air curtain range hood, and the user can trigger the switch portion to turn off / on the air curtain function of the air curtain device.

[0135] Furthermore, the air curtain range hood in this embodiment 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 it is turned on.

[0136] 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.

[0137] 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.

[0138] 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.

[0139] 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.

[0140] Example 11

[0141] The difference between the air curtain range hood of 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.

[0142] 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 condition of the air curtain airflow will affect the user. If the judgment result is yes, the working state of the impurity removal unit is adjusted and / or the acquisition result and / or operation suggestions are prompted.

[0143] Example 12

[0144] The air curtain range hood of this embodiment differs from the above-described embodiments in that it includes an air curtain device for forming an air curtain, and a gas condition acquisition device for acquiring the composition and content of gas components. The gas condition acquisition device includes a first gas condition acquisition device for acquiring the composition and content of gas components in the working area of ​​the air curtain range hood, and a second gas condition acquisition device for acquiring the composition and content of gas components in the non-working area of ​​the air curtain range hood. The working area includes at least a portion of the air intake range of the air curtain range hood's air intake port, and the non-working area includes the top, / or front, / or left, / or right, / or bottom of the air curtain range hood, as well as at least a portion of each of the above.

[0145] 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 indicate the target gas composition of the range hood.

[0146] Furthermore, the air curtain range hood described in this embodiment includes a fan device that generates airflow. A control device is connected to the air curtain device and / or the gas condition acquisition device, and adjusts the working state of the air curtain device and / or prompts a judgment result and / or prompts an operation suggestion based on the data acquired by the gas condition acquisition device. The control device controls the working state of the gas condition acquisition device and / or the air curtain device based on the working state of the fan device. Preferably, the working state of the air curtain device includes an open and / or closed state. When the fan device is in the closed state, the control device turns off the gas condition acquisition device and / or the air curtain device.

[0147] Example 13

[0148] The air curtain range hood of this embodiment differs from the above embodiments in that the control device is adjusted based on data generated simultaneously by the air curtain device and / or the gas condition acquisition device. Preferably, the data is real-time data, and the adjustment is real-time.

[0149] 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.

[0150] 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.

[0151] Example 14

[0152] The air curtain range hood of this embodiment differs from the above-described embodiment in that the first gas condition acquisition device generates first data based on the gas in the working area, and the control device adjusts the operating state of the air curtain device and / or displays the acquisition result and / or provides operational suggestions based on the first data. Preferably, when the first data reaches / does not reach a corresponding threshold, the air curtain device is controlled to open / close and / or the acquisition result and / or operational suggestions are provided.

[0153] 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.

[0154] Example 15

[0155] The air curtain range hood of this embodiment differs from the above-described embodiment in that: the first gas condition acquisition device generates first data based on the gas in the working area, and the second gas condition acquisition device generates second data based on the gas in the non-working area; the control device makes a judgment based on the first data, the second data, and corresponding thresholds, and adjusts the operating state of the air curtain device and / or prompts the judgment result and / or prompts an operational suggestion based on the judgment result. Preferably, if the comparison result between the first data and the second data exceeds the corresponding threshold, the air curtain device is adjusted to open and / or the judgment result and / or prompts a suggestion to open the air curtain device.

[0156] 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.

[0157] 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.

[0158] Example 16

[0159] The difference between the air curtain range hood of this embodiment and the above-mentioned embodiment is that: the impurity removal device includes an impurity removal unit arranged in the air curtain device, and an impurity removal ability judgment device judges the impurity removal ability of the impurity removal device through data obtained by the gas condition acquisition device. When the impurity removal device shows insufficient impurity removal ability, it may be that the impurity removal device needs to be replaced and cleaned, or the oil smoke near the stove is heavy. At this time, the fan device of the equipment is adjusted to increase the air suction capacity. The present invention further introduces an impurity removal device / impurity removal unit with adjustable impurity removal ability. When combined with the impurity removal device / impurity removal unit introduced in the present invention, the air curtain range hood can control the impurity removal ability of the impurity removal device / impurity removal unit through the results obtained by the gas condition acquisition device to ensure the impurity removal effect under different usage conditions.

[0160] Furthermore, the gas condition acquisition device in this embodiment includes a working area gas condition acquisition device for obtaining the composition / content of the gas components in the working area of ​​the air curtain range hood and an air duct gas condition acquisition device for obtaining the composition / content of the gas components in the air duct of the air curtain range hood. The air duct includes the air curtain air duct of the air curtain device. The gas condition acquisition device is designed to include at least two types: a working area gas condition acquisition device and an air duct gas condition acquisition device. A comprehensive investigation of the target gas composition conditions in the working area and the gas composition conditions in the air duct can effectively demonstrate the cleaning effect of the impurity removal device on the target substance. At this time, the air duct gas condition acquisition device is preferably arranged on the side where the impurity removal device is connected to the air duct outlet.

[0161] Furthermore, the duct gas condition acquisition device in this embodiment includes a duct gas condition acquisition device for acquiring the composition / content of gas within the air curtain duct. The duct gas condition acquisition device includes a first duct gas condition acquisition device for acquiring the airflow in the air curtain duct on the side of the air curtain duct moving toward the impurity removal unit. The impurity removal capability determination device compares the data acquired by the first duct gas condition acquisition device with the data acquired by the working area gas condition acquisition device. When the result of the comparison does not exceed a threshold, the impurity removal capability of the impurity removal device is considered to be good. The air curtain range hood described in this embodiment incorporates a first duct gas condition acquisition device in the air curtain duct to assess the quality of the air curtain airflow. The assessment result can be either good air curtain airflow quality, suitable for normal use, or poor air curtain airflow quality, in which case the impurity removal capability of the impurity removal device and / or impurity removal unit is adjusted accordingly based on the first duct gas condition acquisition device, or the user is notified of the poor quality. Furthermore, when the impurity removal capability of the impurity removal device and / or impurity removal unit is adjusted to the system-set limit, the user is notified of the current situation and prompted to conduct an inspection.

[0162] The difference between the air curtain range hood described in this embodiment and the above embodiment is that: the air duct gas condition acquisition device includes an air duct gas condition acquisition device for obtaining the gas component composition / content in the air curtain duct; the air duct gas condition acquisition device includes a second air duct gas condition acquisition device for obtaining the side of the air flow in the air curtain duct that moves away from the impurity removal unit.

[0163] Furthermore, the impurity removal ability judgment device in this embodiment compares the data obtained by the second air duct gas condition acquisition device with the data obtained by the working area gas condition acquisition device. When the result of the comparison between the two does not exceed the threshold, the impurity removal ability of the impurity removal device and / or impurity removal unit is good.

[0164] A second air duct gas condition acquisition device is added to the air duct of the air curtain device. Comparing the data acquired by the second air duct gas condition acquisition device with the data acquired by the working area gas condition acquisition device can further evaluate the impurity removal capabilities of the impurity removal device and / or impurity removal unit. The evaluation results are more intuitive.

[0165] The duct gas condition acquisition device includes an air curtain duct gas condition acquisition device for acquiring the gas component composition / content in the air curtain duct; the air duct gas condition acquisition device includes a first air duct gas condition acquisition device for acquiring the side of the air curtain duct moving toward the impurity removal unit; the air duct gas condition acquisition device includes a second air duct gas condition acquisition device for acquiring the side of the air curtain duct moving away from the impurity removal unit.

[0166] Furthermore, the impurity removal capability determination device in this embodiment compares the data acquired by the first duct gas condition acquisition device with the data acquired by the second duct gas condition acquisition device. When the result of the comparison does not exceed a threshold, the impurity removal capability of the impurity removal unit is good. By comparing the data between the first duct gas condition acquisition device and the second duct gas condition acquisition device, the impurity removal capability of the impurity removal unit can be independently evaluated.

[0167] 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. A temperature-adjustable air curtain range hood, characterized in that: include: An air curtain device, used for forming an air curtain; a temperature adjustment unit for controlling the temperature of the air curtain airflow generated by the air curtain device at different intervals; 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 gas condition acquisition device includes a first gas condition acquisition device for acquiring the composition and content of the gas in the working area of ​​the air curtain range hood and a second gas condition acquisition device for acquiring the composition and content of the gas in the non-working area of ​​the air curtain range hood; The working area includes at least a portion of the suction range of the air curtain range hood's suction port, and the non-working area includes at least a portion of 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; 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; 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 a prompt is given to recommend opening the air curtain device; 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 close and / or the judgment result and / or a prompt is given to recommend closing the air curtain device.

2. The temperature-adjustable air curtain range hood according to claim 1, characterized in that: The temperature control method includes heating.

3. The temperature-adjustable air curtain range hood according to claim 1, characterized in that: The temperature adjustment portion has at least two temperature adjustment positions.

4. The temperature-adjustable air curtain range hood according to claim 3, characterized in that: At least one of the at least two temperature adjustment positions is arranged adjacent to the air outlet of the air curtain device.

5. The temperature-adjustable air curtain range hood according to claim 4, characterized in that: The temperature adjustment portion includes a second temperature adjustment portion disposed adjacent to an air outlet of the air curtain device.

6. The temperature-adjustable air curtain range hood according to claim 5, characterized in that: The temperature adjustment part includes a first temperature adjustment part arranged between the second temperature adjustment part and the air inlet of the air curtain device.

7. The temperature-adjustable air curtain range hood according to claim 5, characterized in that: The number of air outlets of the air curtain device is at least two, and the second temperature adjustment part is provided in a one-to-one correspondence with the at least two air outlets.

8. The temperature-adjustable air curtain range hood according to claim 6, characterized in that: The air curtain range hood includes a switch component for controlling the working state of the temperature adjustment part.

9. The temperature-adjustable air curtain range hood according to claim 8, characterized in that: The switch element includes a first switch element and a second switch element that respectively control the first temperature adjusting part and the second temperature adjusting part.

10. The temperature-adjustable air curtain range hood according to claim 9, characterized in that: The air curtain range hood includes a temperature control component for adjusting the temperature of the temperature adjustment part.

11. The temperature-adjustable air curtain range hood according to claim 10, characterized in that: The temperature control member includes a first temperature control member and a second temperature control member that respectively control the first temperature adjustment portion and the second temperature adjustment portion.

12. The temperature-adjustable air curtain range hood according to claim 11, characterized in that: The air curtain range hood includes an air curtain temperature acquisition device for acquiring the air flow temperature at the air inlet and / or air outlet of the air curtain device and controlling the working state of the temperature adjustment part based on the acquired air flow temperature.

13. The temperature-adjustable air curtain range hood according to claim 12, characterized in that: The air curtain temperature acquisition device includes a first air curtain temperature acquisition device for acquiring the temperature at the air inlet of the air curtain device and / or a second air curtain temperature acquisition device for acquiring the temperature at the air outlet of the air curtain device.

14. The temperature-adjustable air curtain range hood according to claim 13, characterized in that: The air curtain temperature acquisition device is connected to the switch component and controls the switching operation of the switch component.

15. The temperature-adjustable air curtain range hood according to claim 14, characterized in that: When the air inlet temperature of the air curtain device acquired by the first air curtain temperature acquiring device is less than or greater than the target value, the first switch component is controlled to be turned on or off.

16. The temperature-adjustable air curtain range hood according to claim 15, characterized in that: When the air outlet temperature of the air curtain device acquired by the second air curtain temperature acquiring device is lower than or higher than the target value, the second switch component is controlled to be turned on or off.

17. The temperature-adjustable air curtain range hood according to claim 13, characterized in that: The air curtain temperature acquisition device is connected to the temperature control component and controls the temperature control operation of the temperature control component.

18. The temperature-adjustable air curtain range hood according to claim 17, characterized in that: When the air inlet temperature of the air curtain device acquired by the first air curtain temperature acquiring device is lower than the target value, the first temperature control component is controlled to increase or decrease the temperature of the first temperature adjusting portion.

19. The temperature-adjustable air curtain range hood according to claim 18, characterized in that: When the air outlet temperature of the air curtain device acquired by the second air curtain temperature acquiring device is lower than the target value, the second temperature control member is controlled to increase the temperature of the second temperature adjusting portion.

20. The temperature-adjustable air curtain range hood according to claim 1, characterized in that: At least a portion of the temperature adjustment portion is disposed outside or inside the air curtain duct of the air curtain device.

21. The temperature-adjustable air curtain range hood according to claim 20, characterized in that: The temperature adjustment portion is circumferentially arranged on the outside or inside of the air curtain duct.

22. The temperature-adjustable air curtain range hood according to claim 21, characterized in that: The temperature adjustment unit includes a heating coil.

Images