Heat dissipation assembly, range hood and control system of range hood

Abstract

The utility model relates to the technical field of heat dissipation, in particular to a heat dissipation assembly, a range hood and a control system of the range hood, the heat dissipation assembly comprises a heat dissipation device and a heat dissipation fan, the heat dissipation device is fixed on a power module, the heat dissipation fan is arranged above the heat dissipation device, and an air outlet of the heat dissipation fan faces the heat dissipation device. According to the heat dissipation assembly provided by the invention, heat dissipation is directly carried out on the power module through the heat dissipation device, and the heat dissipation fan directly acts on the heat dissipation device to indirectly carry out heat dissipation on the power module, so that a rapid heat dissipation effect can be realized, and adverse effects on frequency conversion performance caused by too high temperature rise of the power module in a working process are reduced.

Description

Technical Field

[0001] This application relates to the field of heat dissipation technology, and in particular to a heat dissipation component, a range hood and its control system. Background Technology

[0002] As people's living standards improve, their demands for the performance of range hoods are also increasing. Traditional range hood inverter boards have limitations in power increase, mainly due to the difficulty in effectively addressing temperature rise issues. Increasing the inverter board's power can easily lead to excessively high temperatures, which not only affects its performance and lifespan but may also threaten the safe operation of the range hood. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a heat dissipation component, a range hood and its control system.

[0004] In a first aspect, the present invention provides a heat dissipation component, including a heat sink and a cooling fan. The heat sink is fixed on a power module, and the cooling fan is located above the heat sink with its air outlet facing the heat sink.

[0005] In conjunction with the first aspect, the power module is located on the substrate inside the control box and is electrically connected to the substrate, and the control box has at least one air vent.

[0006] In conjunction with the first aspect, the air vents on the side wall of the electrical control box are located near the electrical components on the substrate.

[0007] In conjunction with the first aspect, the vent on the front of the electrical control box is recessed from the outside to the inside of the electrical control box.

[0008] In conjunction with the first aspect, the radiator is made of metal, and the heat sink inside the radiator has a finned or honeycomb structure.

[0009] In conjunction with the first aspect, the heat sink is made of copper or aluminum alloy.

[0010] In conjunction with the first aspect, the electrical control box is located inside the range hood and near the air outlet of the range hood, and the power module is connected to the control unit used to control the range hood.

[0011] Secondly, this application provides a range hood, including the heat dissipation component as described above.

[0012] Thirdly, this application provides a range hood control system, including the range hood and control unit as described above, wherein the control unit is connected to the power module inside the range hood.

[0013] In conjunction with the third aspect, it also includes a temperature detection mechanism, which is located inside the electrical control box to detect the temperature of the power module. The temperature detection mechanism is connected to the control unit.

[0014] The present invention provides the following beneficial effects: The present invention provides a heat dissipation component, a range hood and its control system. The heat dissipation component includes a radiator and a cooling fan. The radiator is fixed on the power module, and the cooling fan is located above the radiator with the air outlet facing the radiator.

[0015] The heat dissipation component provided in this application directly dissipates heat from the power module through the heat sink, and indirectly dissipates heat from the power module by having the cooling fan directly act on the heat sink. This can achieve rapid heat dissipation and reduce the adverse effects of excessive temperature rise of the power module on the frequency converter performance during operation.

[0016] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description, claims, and drawings.

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the heat dissipation assembly provided in this application;

[0020] Figure 2 This is a structural schematic diagram of the smoke machine provided in this application.

[0021] Figure label:

[0022] 1-Power module, 2-Heat sink, 3-Cooling fan, 4-Electrical control box, 5-Electrical components, 6-First air vent, 7-Second air vent, 8-Air outlet of the range hood. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] To facilitate understanding of this embodiment, the application scenarios and design concepts of this application embodiment will be briefly introduced below.

[0025] As people's living standards improve, the performance requirements for kitchen range hoods are also constantly increasing. However, traditional range hoods have encountered some technical bottlenecks, particularly the problems faced by their inverter control boards when increasing power output. The inverter board is a key component in a range hood used to regulate the motor speed and power. It can adjust the motor's operating state according to actual needs, thereby achieving energy saving and improving efficiency. However, when attempting to improve the overall performance of a range hood by enhancing the inverter board, a significant technical obstacle is encountered—temperature rise.

[0026] Specifically, when the power module of the inverter board is upgraded to meet higher performance demands, its internal electronic components generate more heat. If this heat is not effectively managed, it can lead to excessively high inverter board temperatures. High temperatures not only reduce the inverter board's efficiency and shorten its lifespan, but may also pose safety risks, such as damaging other components or causing fires. Therefore, effectively addressing the inverter board's temperature rise issue is crucial for further improving the performance of the range hood.

[0027] Example 1

[0028] This application provides a heat dissipation component, combined with... Figure 1 As shown, it includes a heat sink 2 and a cooling fan 3. The heat sink 2 is fixed on the power module 1, and the cooling fan 3 is located above the heat sink 2, with the air outlet of the cooling fan 3 facing the heat sink 2.

[0029] In this embodiment, a heat sink 2 is provided on the power module 1 to dissipate the heat generated during operation. In addition, the air outlet of the cooling fan 3 faces the heat sink 2, which can further dissipate heat, thereby improving the heat dissipation effect, reducing the adverse effects of the heat generated during operation on the power module 1, and helping to extend the service life of the power module.

[0030] Furthermore, the cooling fan 3 is fixedly connected to a position adjustment mechanism (not shown in the figure). This mechanism allows adjustment of the height of the cooling fan 3 relative to the radiator 2, thus increasing or decreasing the relative distance between the radiator 2 and the cooling fan 3. Understandably, as an feasible solution, this position adjustment structure can be a sliding mechanism, specifically including a slide rail disposed along the height direction of the control box 4 on the inner wall of the control box 4, and a slider that slides in cooperation with the slide rail. The slider is fixedly connected to the cooling fan 3, and the cooling fan 3 can move along the height direction under the sliding cooperation of the slide rail and the slider. Thus, when the load power increases, causing the temperature of the power module 1 to rise rapidly, the cooling fan 3 can be moved closer to the power module 1 to quickly dissipate heat. To improve automation, the slider movement can be driven by a control unit controlling an electric drive mechanism. Understandably, the above method is merely an example and is not intended to limit the scope of the solution.

[0031] In conjunction with the first aspect, the power module 1 is disposed on the substrate inside the control box 4 and is electrically connected to the substrate, and the control box 4 has at least one air vent.

[0032] Combination Figure 1 As shown, the first vent 6 is located on the side of the control box 4, and the second vent 7 is located on the top surface of the control box 4. Other vents can also be located on other sides, the back, or the front to discharge the gas after heat dissipation treatment of the power module from the control box 4. It is understood that the vents can be any shape, such as circular, elliptical, or rhomboid, and the shape formed by multiple vents, such as a square, rhombus, or polygon, can also be arbitrary. Manufacturing is based on actual usage requirements or design specifications, and is not limited here.

[0033] In conjunction with the first aspect, the air vents on the side wall of the electrical control box 4 are located near the electrical components 5 on the substrate.

[0034] Understandably, the electrical components 5 on the substrate are also electrically connected to the substrate and will generate heat during operation. Placing the air vents on the side wall of the electrical control box 4 close to the electrical components 5 will help dissipate the heat.

[0035] In conjunction with the first aspect, the air vent on the front of the electronic control box 4 is recessed from the outside to the inside of the electronic control box 4.

[0036] Understandably, in this embodiment, "front" refers to the side facing the exhaust vent of the range hood, and the air guide holes on this side are designed to be recessed inward to prevent external dust from entering the electrical control box 4. Similarly, the second air guide hole 7 on other surfaces, such as the top surface, and the first air guide hole 6 on the side surface, can also be designed with this structure to prevent dust from entering.

[0037] In conjunction with the first aspect, the radiator 2 is made of metal, and the heat sink inside the radiator has a finned structure or a honeycomb structure.

[0038] Since the heat sink 2 is directly mounted on the power module 1, the use of a metal material with good thermal conductivity facilitates the rapid conduction of heat. In addition, the use of finned or honeycomb heat sinks can increase the heat dissipation area and the area on which heat is conducted outward.

[0039] In conjunction with the first aspect, the radiator 2 is made of copper or aluminum alloy.

[0040] Heat sink 2 is made of readily available copper or aluminum alloy materials to effectively control costs while achieving a better heat dissipation effect.

[0041] In conjunction with the first aspect, the electrical control box 4 is located inside the range hood and close to the air outlet 8 of the range hood, and the power module 1 is connected to the control unit of the range hood.

[0042] Combination Figure 2 As shown, the electrical control box 4 is located inside the range hood near the air outlet 8 of the range hood. When the range hood is working, the power of the range hood increases, and the temperature of the power module 1 rises accordingly. However, the air volume of the air outlet 8 of the range hood also increases, which can carry away more heat, thereby reducing the temperature rise of the power module 1.

[0043] Secondly, this application provides a range hood, including the heat dissipation components described above.

[0044] Thirdly, this application also provides a range hood control system, including the range hood and control unit as described above, wherein the control unit is connected to the power module 1 inside the range hood.

[0045] In conjunction with the third aspect, the system also includes a temperature detection mechanism (not shown in the figure), which is located in the electrical control box 4 to detect the temperature of the power module 1. The temperature detection mechanism is connected to the control unit.

[0046] Specifically, after obtaining the status of the range hood, the control unit can determine the gear condition of the range hood. When the range hood is in the on state, that is, when the range hood is working, if the temperature detection mechanism can detect the temperature at point 1 of the power module, the cooling fan 3 can be controlled to work according to the temperature at point 1 of the power module. The specific working process example is as follows: The temperature detection mechanism continuously detects the temperature T of the power module 1. If T≥T1 (T1 is the preset first temperature threshold), the MCU (i.e., the control unit) controls the cooling fan 3 to turn on. After turning on, the temperature detection of the power module 1 continues. If the obtained new temperature T≤T2 (T2 is the preset second temperature threshold), the MCU controls the cooling fan 3 to turn off. After turning off, if the temperature of the IPM module (i.e., the power module 1) rises to T1, the above control logic for the cooling fan 3 is repeated to control the start and stop of the cooling fan 3, where T2<T1. That is, when the temperature of the power module 1 rises to reach the first temperature threshold, the cooling fan 3 is controlled to turn on to improve the heat dissipation effect; if the temperature of the power module 1 drops to the second temperature threshold, the cooling fan 3 is turned off to maintain the normal working temperature of the power module 1.

[0047] In addition, in the case of no temperature detection mechanism, the working process of controlling the start and stop of the cooling fan 3 can be based on the gear condition of the range hood: If the fan is turned on to the stir-fry gear, the cooling fan 3 is turned on for heat dissipation. If the gear of the range hood is not the stir-fry gear but other gears, the cooling fan 3 is turned on for a time t1 and then turned off for a time t2, and the cooling fan 3 cycles between turning on and off. Through precise logical judgment and intelligent control, while ensuring the heat dissipation effect of the frequency conversion board of the range hood, the power consumption is effectively reduced and the service life of the cooling fan 3 is extended.

[0048] In addition, the following control method can also be adopted. Specifically: When the fan starts to run, the cooling fan 3 starts to work. According to the temperature of the power module 1 or the gear condition of the fan, the MCU performs PWM control on the working voltage of the cooling fan 3. When the temperature of the power module 1 is relatively high or the range hood is in the stir-fry gear, PWM is fully open, and the cooling fan 3 works at full power. When the temperature of the power module 1 is relatively low or the gear of the range hood is a low gear, the PWM output is adjusted to adjust the voltage of the cooling fan 3. On the premise of meeting the heat dissipation requirements, the on time of the cooling fan 3 is reduced, and the service life of the cooling fan 3 is increased.

[0049] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems and devices described above can refer to the corresponding processes in the foregoing method embodiments, and will not be elaborated herein.

[0050] Furthermore, in the description of the embodiments of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0051] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0052] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0053] Finally, it should be noted that the above embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The protection scope of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this application. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the protection scope of this application. Therefore, the protection scope of this application should be determined by the protection scope of the claims.

Claims

1. A heat dissipation component, characterized in that, The device includes a heat sink and a cooling fan. The heat sink is fixed on the power module, and the cooling fan is located above the heat sink with its air outlet facing the heat sink. The power module is located on a base plate inside the electrical control box and is electrically connected to the base plate. The electrical control box has at least one air vent. The air vent located on the side wall of the electrical control box is close to the electrical components on the base plate.

2. The heat dissipation assembly according to claim 1, characterized in that, The air vent on the front of the electrical control box is recessed from the outside to the inside of the electrical control box.

3. The heat dissipation assembly according to claim 1, characterized in that, The radiator is made of metal, and the heat sink inside the radiator has a finned structure or a honeycomb structure.

4. The heat dissipation assembly according to claim 1, characterized in that, The radiator is made of copper or aluminum alloy.

5. The heat dissipation assembly according to claim 1, characterized in that, The electrical control box is located inside the range hood and near the air outlet of the range hood, and the power module is connected to the control unit used to control the range hood.

6. A range hood, characterized in that, Includes the heat dissipation component as described in any one of claims 1-5.

7. A smoke hood control system, characterized in that, It includes the range hood and control unit as described in claim 6, wherein the control unit is connected to the power module within the range hood.

8. The system according to claim 7, characterized in that, It also includes a temperature detection mechanism, which is located inside the electrical control box and is used to detect the temperature of the power module. The temperature detection mechanism is connected to the control unit.

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