Control method of range hood and range hood

Abstract

The invention discloses a control method of an extractor hood and the extractor hood, and the control method of the extractor hood comprises the following steps: S10, obtaining the temperature value T of a panel, and calculating the change rate T of the temperature; s20, T is judged to be larger than or equal to Ta, the step S30 is executed, and Ta is the preset change rate; s30, T is compared with a first preset temperature value T1, and if T is smaller than T1, the step S40 is executed; and S40, starting a panel heating function. According to the range hood, the temperature of the panel is adjusted through the control method of the range hood, and the panel is prevented from generating condensation in the working process of the range hood.

Description

Technical Field

[0001] The invention belongs to the technical field of range hoods, and in particular, relates to a control method for a range hood and the range hood. Background Art

[0002] Most range hoods have glass panels. When cooking by steaming, stir-frying, or other cooking methods, a large amount of water vapor is generated during the cooking process. When the water vapor touches the glass panel with a lower temperature, it will quickly condense into water droplets and produce liquid droplets. If the glass panel itself is stained, the condensed water droplets may carry these dirts as they slide down, and fall directly onto the food or stove, causing unnecessary pollution. After cooking, when the condensation on the glass panel evaporates, the attached stains may remain on the panel, forming stains that are difficult to remove, affecting the appearance and subsequent cleaning work. When the glass panel is also used as a control panel, condensation may increase the risk of accidentally touching the range hood control button, causing the range hood to start when it is not needed or adjust to an inappropriate mode, affecting the cooking experience.

[0003] Chinese patent application number 201621114203.4 discloses a panel device for a range hood, including a heating element, a heat-conducting panel and an isolation cover, wherein the heat-conducting panel is connected via a connecting plate and an isolation cover, and the heat-conducting panel, the connecting plate and the isolation cover together form a mounting cavity; the heating element is located in the mounting cavity and fixed on the heat-conducting panel. In the present application, the heat-conducting panel, the connecting plate and the isolation cover together form a mounting cavity, and the heating element is installed in the mounting cavity, which increases the difficulty of cleaning, and oil stains will accumulate over a long period of use, affecting the performance and life of the equipment.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a control method for a range hood and a range hood. The range hood intelligently adjusts the temperature of the panel through the control of the control method to prevent condensation on the panel during cooking.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0007] A first aspect of the present invention provides a control method for a range hood, comprising:

[0008] S10, obtaining the temperature value T of the panel and calculating the temperature change rate △T;

[0009] S20, judging △T≥△Ta, executing step S30, △Ta is a preset change rate;

[0010] S30, comparing T with a first preset temperature value T1, if T<T1, executing step S40;

[0011] S40, start the panel heating function.

[0012] Optionally, in step S40, it further includes: monitoring the temperature of the panel and executing step S50;

[0013] S50, comparing T with a second preset temperature value T2, if T ≥ T2, executing step S60;

[0014] S60, stop the panel heating function;

[0015] Among them, T2>T1.

[0016] Optionally, in step S50, it also includes: if T<T2, repeating step S50.

[0017] Optionally, in step S60, after stopping the panel heating function, return to step S10.

[0018] Optionally, in step S30, it also includes: if T≥T1, repeating step S30.

[0019] A second aspect of the present invention provides a range hood, which adopts the above-mentioned range hood control method.

[0020] Furthermore, the range hood comprises:

[0021] Range hood body;

[0022] A panel is installed on the side where the air inlet of the range hood body is located;

[0023] A heating element is used to adjust the temperature of the panel so that the temperature of the panel is above the dew point.

[0024] Further, the heating element is mounted on the panel;

[0025] Preferably, the heating element is adhered to the panel by bonding;

[0026] Preferably, the heating element is a heating wire or a heating film.

[0027] Furthermore, the heating element is installed on the panel below the air inlet.

[0028] Furthermore, the range hood further comprises: a monitoring unit, configured to monitor the temperature of the panel;

[0029] a control unit, electrically connected to the monitoring unit and the heating element;

[0030] The monitoring unit monitors the temperature of the panel, and the control unit receives the monitoring result of the monitoring unit and controls the heating element to work;

[0031] Preferably, the monitoring unit is mounted on the panel.

[0032] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art.

[0033] 1. The range hood of the present invention is provided with a heating element on the panel to heat the panel, which can effectively prevent the condensation and accumulation of oil smoke on the panel, keep the panel clean, improve the efficiency of oil smoke removal, and reduce the frequency of cleaning and maintenance. At the same time, it avoids the discomfort caused by the accumulation of oil smoke during the cooking process, and improves the comfort of cooking and the overall experience of the user.

[0034] 2. The range hood of the present invention is also provided with a monitoring unit and a control unit, which realizes real-time monitoring of the panel temperature and intelligent control of the heating element, and can automatically adjust the working state of the heating element according to the actual temperature of the panel, thereby ensuring the heating effect and avoiding energy waste. At the same time, unnecessary energy consumption is reduced by accurately controlling the working time and power of the heating element.

[0035] 3. The control method of the range hood of the present invention increases the flexibility of the working process of the heating element, and can be adjusted and optimized according to different usage scenarios and user needs to achieve the best usage effect.

[0036] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] 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 improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the accompanying drawings:

[0038] Figure 1 This is a schematic diagram of the process of the range hood control method of the present invention. Figure 1 ;

[0039] Figure 2 The flow chart of the range hood control method of the present invention is as follows Figure 2 ;

[0040] Figure 3 is a schematic diagram of a range hood of the present invention;

[0041] Figure 4is a schematic diagram of an explosion of the range hood of the present invention;

[0042] Figure 5 It is a schematic diagram of the panel of the present invention facing the main body.

[0043] In the figure: 100, range hood body; 110, air inlet; 200, panel; 210, heating element; 220, monitoring unit.

[0044] 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 are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0045] 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.

[0046] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0047] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] like Figure 1 to Figure 2 As shown, a first aspect of the present invention provides a method for controlling a range hood, comprising steps S10 to S40.

[0049] In step S10, the temperature value T of the panel is obtained, and the temperature change rate ΔT is calculated.

[0050] In step S20 , it is determined that ΔT≥ΔTa, and step S30 is executed, where ΔTa is a preset change rate.

[0051] In step S30 , T is compared with a first preset temperature value T1 , and if T<T1 , step S40 is executed.

[0052] In step S40, the panel heating function is started.

[0053] In this embodiment, first, the instruction to start the range hood fan is received, and then the temperature value T of the panel is obtained in real time, and then the temperature change rate △T is calculated. According to the temperature of the initial environment of the panel, the temperature change value is calculated, and the temperature change rate △T is solved. The change rate △T reflects the speed of temperature change and is an important basis for judging whether a specific panel function needs to be started.

[0054] Compare the calculated temperature change rate △T with the preset change rate △Ta to determine whether the panel temperature has changed significantly. If △T is greater than or equal to △Ta, it means that the temperature has changed rapidly. Further determine the relationship between the current temperature T and the preset first preset temperature value T1 to determine whether the panel temperature is lower than a threshold that requires heating. When T is less than T1, the system will start the panel heating function to heat the panel to increase the temperature of the panel. At the same time, the temperature of the panel is continuously monitored so that the heating process of the panel can be adjusted when necessary.

[0055] It should be noted that ΔTa is the short-term temperature change rate of the range hood panel when boiling water in an actual installation environment, preferably 0.2°C / s. T1 is a temperature value that can ensure that the panel temperature is high enough to prevent condensation, preferably 65°C.

[0056] Optionally, in step S40, the method further includes: monitoring the temperature of the panel and executing step S50.

[0057] In step S50 , T is compared with a second preset temperature value T2 , and if T ≥ T2 , step S60 is executed.

[0058] In step S60, the panel heating function is stopped; wherein, T2>T1.

[0059] In this embodiment, the panel heating function is started, and after the temperature of the panel is increased, the temperature T of the panel is monitored in real time to understand the change of the panel temperature during the heating process in real time so as to adjust the heating strategy in time.

[0060] The obtained panel temperature T is compared with a preset second preset temperature value T2. The second preset temperature value T2 is usually set to a higher temperature threshold than T1, and is used to determine whether the panel temperature has reached a safe or efficient range that does not require additional heating.

[0061] If the panel temperature T is not less than the second preset temperature value T2 (i.e., T≥T2), the system stops the panel heating function, but continues to monitor the panel temperature during the use of the range hood. When the panel temperature has reached or exceeded T2, it means that the current temperature is high enough and there is no need to heat the panel, so the panel temperature is increased to prevent overheating. At the same time, continuous monitoring of the panel temperature can ensure timely response when the temperature drops.

[0062] It should be noted that T2 is a temperature value that protects the panel from explosion and does not cause excessive temperature to burn the user, and is preferably 75°C.

[0063] Optionally, in step S50, it also includes: if T<T2, repeating step S50.

[0064] In this embodiment, the temperature T of the panel is continuously monitored in real time. If T<T2, it means that the panel temperature is still within a safe range. The panel heating function can be continuously started, and step S50 is repeated to continue monitoring the temperature to ensure that the panel remains within a suitable operating temperature range.

[0065] Optionally, in step S60, after stopping the panel heating function, return to step S10.

[0066] In this embodiment, after the operation of stopping the panel heating function is executed, the control process may not be terminated immediately, but the control process may return to step S10 to reacquire the temperature T of the panel and calculate the temperature change rate △T. Specifically, after the panel heating function is stopped, the temperature T of the panel is continuously monitored, and the temperature change rate △T between the last monitored temperature is calculated to understand the change trend of the panel temperature after the panel heating function is stopped, so as to determine whether it is necessary to reheat the panel and increase the temperature of the panel. After obtaining the panel temperature T and the temperature change rate △T, if △T is greater than or equal to the preset change rate △Ta, and the current temperature T is less than the first preset temperature value T1, the system will reheat the panel and increase the temperature of the panel. At the same time, the temperature of the panel is continuously monitored. If the panel temperature drops rapidly after the panel heating is stopped (△T≥△Ta) and drops below the threshold value for heating (T<T1), the heating process is restarted to ensure that the panel remains within a suitable operating temperature range. This helps prevent oil condensation and maintain the cleaning effect of the equipment.

[0067] Optionally, in step S30, it also includes: if T≥T1, repeating step S30.

[0068] In this embodiment, according to the logic description of the above control method, when the temperature value T of the panel monitored is less than the first preset temperature value T1, the panel heating function is started to increase the temperature of the panel to prevent condensation on the panel. When the temperature value T of the panel monitored is greater than or equal to the first preset temperature value T1, step S30 is repeated to continuously compare the temperature value T with the first preset temperature value T1 to ensure that condensation does not occur on the panel during the operation of the range hood fan.

[0069] During the process of heating the panel or not, if an operation instruction from the user to turn off the range hood fan is received, that is, an instruction for the range hood fan to stop working, the logic process of the above-mentioned range hood control method is terminated, and the temperature of the panel is monitored again when the range hood fan is started next time, and the temperature of the panel is adjusted according to the monitoring results.

[0070] like Figures 3 to 5 As shown, a second aspect of the present invention provides a range hood, which adopts the above-mentioned control method of the range hood.

[0071] Furthermore, the range hood includes: a range hood body 100; a panel 200 installed on a side of the range hood body 100 where the air inlet 110 is located; and a heating element 210 for adjusting the temperature of the panel 200 so that the temperature of the panel 200 is higher than the dew point.

[0072] In this embodiment, the range hood body 100 of the range hood is the support and core component of the entire device, and is provided with an air inlet 110 as the main passage for oil smoke to enter the range hood. The panel 200 is installed on one side of the air inlet 110 of the range hood body 100, and the oil smoke generated during cooking is sucked in through the air inlet 110.

[0073] The heating element 210 adjusts the temperature of the panel 200 during the operation of the range hood, so that the temperature of the panel 200 is higher than the dew point. Specifically, the heating element 210 can heat the panel 200, and the surface temperature of the heated panel 200 increases, which helps to reduce the condensation of oil smoke on the panel 200, maintain the cleanliness of the panel 200, and reduce the trouble of cleaning for users. When the oil smoke generated during cooking encounters the hotter panel 200, part of the grease may be more easily separated due to the increase in temperature, further improving the separation efficiency of the oil smoke, and at the same time preventing the water vapor generated during cooking from condensing on the panel 200 to form condensation.

[0074] Further, the heating element 210 is mounted on the panel 200;

[0075] Preferably, the heating element 210 is attached to the panel 200 by bonding;

[0076] Preferably, the heating element 210 is a heating wire or a heating film.

[0077] In this embodiment, an installation cavity can be set between the main body 100 and the panel 200, and the heating element 210 can be installed in the installation cavity, or the heating element 210 can be directly installed on the panel 200, so that the heating element 210 can heat the panel 200 more easily, so that the panel 200 can be heated up in a short time.

[0078] When the oil smoke and water vapor generated during cooking enter the range hood through the air inlet 110, they can feel the temperature of the panel 200 when they touch the panel 200, thereby effectively preventing the condensation of oil and water vapor. The heating element 210 can be electrically heated and connected to an external power source through wires or other conductive materials to ensure that a stable power supply can be obtained when the range hood is working. The connection method is simple and reliable, and it is easy to realize automatic control. The heating power and heating time of the heating element 210 can be adjusted as needed. The heating element 210 can also be a heat exchange component, such as a semiconductor or a heat pump.

[0079] As a preferred solution, the heating element 210 is adhered to the panel 200 by bonding, which is not only easy to install, but also can ensure close contact between the heating element 210 and the panel 200, thereby improving the heating efficiency. At the same time, the bonding material should have good high temperature resistance and aging resistance to ensure stability and safety in long-term use.

[0080] More specifically, the heating element 210 is adhered to the side of the panel 200 facing the range hood body by gluing, so that the heating element 210 can be hidden, making the appearance of the range hood simpler.

[0081] As a preferred solution, a heating wire or a heating film is used as the heating element 210. The heating wire has the characteristics of uniform heating, high thermal efficiency, and easy control, and can quickly convert electrical energy into thermal energy to heat the panel 200. At the same time, since it is a linear structure, it can be flexibly arranged at different positions of the panel 200 as needed to achieve precise heating of a specific area. The installation and maintenance of the heating wire are also relatively simple and low in cost.

[0082] The heating film has the advantages of uniform heating, lightness, softness, and easy installation. It can fit tightly on the surface of the panel 200 to achieve uniform heating of a large area without taking up too much space. In addition, the heating film also has good weather resistance and corrosion resistance, and is suitable for a variety of complex environments. When selecting the heating element 210, comprehensive consideration can be given to factors such as specific application scenarios, performance requirements, and cost budgets.

[0083] Furthermore, the heating element 210 is installed on the panel 200 at the lower part of the air inlet 110 .

[0084] In this embodiment, based on the consideration of the oil smoke flow characteristics, the heating element 210 is installed on the panel 200 at the lower part of the air inlet 110 of the range hood body 100. When the oil smoke enters from the air inlet 110, it will first contact the heated lower part of the panel 200. Due to the principle that hot air rises, the heated part of the panel 200 can more effectively prevent the oil stains and water vapor from condensing on the panel 200 when it contacts the oil smoke and water vapor generated during the cooking process.

[0085] Furthermore, the range hood further comprises: a monitoring unit 220 for monitoring the temperature of the panel 200;

[0086] A control unit, electrically connected to the monitoring unit 220 and the heating element 210;

[0087] The monitoring unit 220 monitors the temperature of the panel 200 , and the control unit receives the monitoring result of the monitoring unit 220 and controls the heating element 210 to work;

[0088] Preferably, the monitoring unit 220 is installed on the panel 200 .

[0089] In this embodiment, the monitoring unit 220 can be installed in the installation cavity between the range hood body 100 and the panel 200, and can also be installed on the panel 200 to monitor the temperature of the panel 200 in real time. By placing the monitoring unit 220 close to the panel 200, it is possible to ensure accurate acquisition of the temperature data of the panel 200, and provide reliable feedback for the control unit.

[0090] The control unit is electrically connected to the monitoring unit 220 and the heating element 210, and is responsible for receiving the temperature data transmitted by the monitoring unit 220, and intelligently controlling the heating power and time of the heating element 210 according to the preset temperature range or the parameters set by the user. By comparing the monitored temperature of the panel 200 with the preset temperature range, the control unit can automatically adjust the heating power of the heating element 210 to prevent the temperature of the panel 200 from being too high or too low. At the same time, different heating modes and time periods can be set according to the user's usage habits and needs to achieve personalized customization.

[0091] Specifically, the monitoring unit 220 is installed on the panel 200 to ensure that the temperature change of the panel 200 can be accurately sensed, and the monitoring element is used to collect the temperature data of the panel 200 in real time. The monitoring unit 220 transmits the collected temperature data to the control unit through an electrical signal or other communication method. During the signal transmission process, the accuracy and real-time nature of the data need to be ensured so that the control unit can respond quickly.

[0092] The control unit receives temperature data from the monitoring unit 220, and processes and analyzes the data. For example, the control unit may compare the data with parameters such as a preset temperature range and a heating power threshold. Based on the processed data, the control unit intelligently controls the working state of the heating element 210.

[0093] For example, if the temperature of the panel 200 is lower than a preset range, the control unit may increase the power of the heating element 210 to increase the temperature of the panel 200; if the temperature of the panel 200 is too high, the power may be reduced or the heating element 210 may be turned off to prevent overheating. In addition to controlling the heating element 210 according to the temperature data, the control unit may also have a safety protection function; for example, when the panel 200 is detected to be abnormally high in temperature, the control unit may immediately cut off the power supply of the heating element 210 to prevent fire or explosion of the panel 200 and other safety accidents.

[0094] It should be noted that the panel 200 mentioned here can be a glass panel 200 that can conduct heat, or a panel 200 that can conduct heat and easily generate water vapor condensation during cooking.

[0095] The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation scheme in the above embodiment can also be further combined or replaced. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the solution of the present invention.

Claims

1. A control method for a range hood, characterized in that: The steps include: S10, obtaining the temperature value T of the panel and calculating the temperature change rate △T; S20, judging △T≥△Ta, executing step S30, △Ta is a preset change rate; S30, comparing T with a first preset temperature value T1, if T<T1, executing step S40; S40, start the panel heating function.

2. The control method of the range hood according to claim 1, characterized in that: In step S40, it also includes: monitoring the temperature of the panel and executing step S50; S50, comparing T with a second preset temperature value T2, if T ≥ T2, executing step S60; S60, stop the panel heating function; Among them, T2>T1.

3. The control method of the range hood according to claim 2, characterized in that: In step S50, it further includes: if T<T2, repeating step S50.

4. The control method of the range hood according to any one of claims 2-3, characterized in that: In step S60, after the panel heating function is stopped, the process returns to step S10.

5. The control method of the range hood according to claim 1, characterized in that: In step S30, it further includes: if T≥T1, repeating step S30.

6. A range hood, characterized in that: A control method for a range hood according to any one of claims 1 to 5 is adopted.

7. The range hood according to claim 6, characterized in that: include: Range hood body (100); A panel (200) is installed on a side of the range hood body (100) where the air inlet (110) is located; A heating element (220) is used to adjust the temperature of the panel (200) so that the temperature of the panel (200) is higher than the dew point.

8. The range hood according to claim 7, characterized in that: The heating element (220) is mounted on the panel (200); Preferably, the heating element (220) is adhered to the panel (200) by bonding; Preferably, the heating element (220) is a heating wire or a heating film.

9. The range hood according to claim 8, characterized in that: The heating element (220) is mounted on the panel (200) below the air inlet (110).

10. The range hood according to any one of claims 6 to 9, characterized in that: include: A monitoring unit (230) for monitoring the temperature of the panel (200); a control unit, electrically connected to the monitoring unit (230) and the heating element (220); The monitoring unit (230) monitors the temperature of the panel (200), and the control unit receives the monitoring result of the monitoring unit (230) and controls the heating element (220) to operate; Preferably, the monitoring unit (230) is installed on the panel (200).

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