Drying equipment
By contacting the variable frequency plate with the evaporator in the heat pump system, and using copper heat dissipation plate and fins to enhance heat transfer efficiency, the problem of low heat dissipation efficiency of the variable frequency plate is solved, achieving more efficient heat dissipation effect and smaller Equipment volume.
Patent Information
- Application Number
- CN202421112940.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-05-21
AI Technical Summary
In the existing drying equipment, the inverter plate has low heat dissipation efficiency, which leads to the over-temperature burnout of electronic devices, and the traditional air-cooled heat dissipation method has low space efficiency.
By contacting the variable frequency plate with the evaporator in the heat pump system, the refrigerant absorbs the heat of the variable frequency plate during the evaporation process, and quickly reduces the temperature of the variable frequency plate. At the same time, copper heat dissipation plates and fins are used to increase the contact area and heat transfer efficiency.
It significantly improves the heat dissipation efficiency of the frequency converter board, prevents over-temperature damage, reduces the volume of the equipment, and improves the overall heat dissipation effect.
Smart Images
Figure CN222524970U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of intelligent household appliances, and specifically provides a drying device. Background Art
[0002] With the popularity of heat pump dryers, in order to meet the potential needs of users for dryer functions and save energy and reduce consumption, frequency conversion technology is increasingly being applied to dryers, such as frequency conversion drum drive motors, frequency conversion drying fans, frequency conversion compressors, etc. The application of frequency conversion technology requires frequency conversion boards for control. For heat pump dryers with multiple frequency conversion functions, the electronic components that can control frequency conversion fans, frequency conversion motors, frequency conversion compressors and other components to achieve frequency conversion functions are usually concentrated on one electronic control board, which makes the electronic control board larger and the installation conditions limited. The electronic components will generate a lot of heat during operation. If the heat cannot be dissipated in time, the electronic components are prone to overheating and burning.
[0003] At present, the traditional heat dissipation method for electronic devices is air cooling, that is, an electrical box air duct is set in the electrical box, and a radiator is set in the electrical box air duct. The radiator is in contact with the electric control board. When the heat pump dryer is running, the external ambient air is introduced into the electrical box air duct and flows through the radiator, taking away the heat transferred from the electric control board to the radiator to cool the radiator and achieve heat dissipation of the electric control board. However, this method requires an additional air duct, which occupies the space of the heat pump dryer and has low efficiency.
[0004] Therefore, this field needs a new technical solution to solve the above problems. Utility Model Content
[0005] The utility model aims to solve the above technical problem, that is, to solve the problem of low heat dissipation efficiency of the frequency conversion board of the existing drying equipment.
[0006] The utility model provides a drying device, comprising a heat pump system and a frequency conversion board. The heat pump system comprises a compressor, a condenser, a throttle valve and an evaporator which are sequentially connected through pipelines. The frequency conversion board abuts against the evaporator to reduce the temperature through the evaporator.
[0007] In the preferred technical solution of the above drying equipment, the frequency conversion board includes a heating device, a circuit board and a heat sink, the heating device is installed on the circuit board, the circuit board is arranged on one side of the heat sink, and the other side of the heat sink abuts against the evaporator.
[0008] In a preferred technical solution of the above drying equipment, a fin is provided on the other side of the heat dissipation plate, and the fin is inserted into the heat exchange tube of the evaporator and contacts the heat exchange tube.
[0009] In a preferred technical solution of the above drying equipment, a plurality of fins are provided, and the plurality of fins are arranged at intervals.
[0010] In the preferred technical solution of the above drying equipment, the fins are made of copper.
[0011] In a preferred technical solution of the above drying equipment, the evaporator is installed in an air duct, and the heat sink is connected to an upper cover of the air duct by snap-fitting or bolting.
[0012] In a preferred technical solution of the above drying equipment, a sealing structure is provided between the heat dissipation plate and the upper cover of the air duct.
[0013] In a preferred technical solution of the above drying equipment, a thermal conductive adhesive is coated between the heating element and the circuit board.
[0014] In a preferred technical solution of the above drying equipment, the drying equipment further comprises a waterproof cover, and the waterproof cover is provided on the frequency conversion board.
[0015] In the preferred technical solution of the above-mentioned drying equipment, the drying equipment is a clothes dryer or a washer-dryer.
[0016] It can be understood by those skilled in the art that the technical solution of the present utility model provides a drying device, including a heat pump system and a frequency conversion board, the heat pump system includes a compressor, a condenser, a throttle valve and an evaporator connected in sequence through pipelines, and the frequency conversion board abuts against the evaporator to cool down through the evaporator. In the case of adopting the above technical solution, the present utility model can improve the heat dissipation efficiency of the frequency conversion board. Specifically, the present utility model abuts the frequency conversion board against the evaporator, so that when the evaporator evaporates and absorbs heat, the heat on the frequency conversion board can be quickly absorbed, the temperature of the frequency conversion board can be quickly reduced, the heat dissipation efficiency of the frequency conversion board can be improved, and the frequency conversion board can be protected from damage due to overheating.
[0017] Furthermore, the frequency conversion board of the utility model includes a heating device, a circuit board and a heat sink, wherein the heating device is mounted on the circuit board, the circuit board is arranged on one side of the heat sink, and the other side of the heat sink abuts against the evaporator. Through this arrangement, the heat generated by the heating device can be quickly transferred to the evaporator through the heat sink by utilizing the thermal conductivity of the heat sink, so as to further improve the heat dissipation effect of the frequency conversion board.
[0018] Furthermore, the other side of the heat sink of the utility model is provided with fins, which are inserted into the heat exchange tube of the evaporator and contact the heat exchange tube. Through this arrangement, after the heat sink abuts against the evaporator, the heat of the heating device can be further transferred to the evaporator through the fins, so as to further improve the heat dissipation effect of the frequency converter board.
[0019] Furthermore, the utility model has multiple fins, which are arranged at intervals, so that heat can be transferred through multiple fins at the same time, thereby accelerating the heat transfer rate of the heat sink, further improving the heat transfer effect on the heating device, and improving the heat dissipation efficiency of the frequency conversion board.
[0020] Furthermore, a heat-conducting adhesive is coated between the heating device and the circuit board of the utility model, which can effectively strengthen the contact between the heating device and the circuit board, thereby further improving the heat dissipation effect of the heating device and reducing the temperature of the heating device, thereby extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:
[0022] Figure 1 It is a schematic diagram of the assembly of the frequency conversion board and the evaporator of the drying equipment of the utility model;
[0023] Figure 2 It is a front view of a frequency conversion board and an evaporator of the drying equipment of the utility model.
[0024] List of reference numerals:
[0025] 1. frequency conversion board; 21. heating device; 22. circuit board; 23. heat sink; 24. fin;
[0026] 2. Evaporator; 3. Air duct; 4. Sealing structure; 5. Waterproof cover. DETAILED DESCRIPTION
[0027] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. For example, although the following embodiments are introduced in conjunction with a clothes dryer, the heat dissipation solution provided by the present invention is also applicable to other products that need to solve the problem of low heat dissipation efficiency of heating devices.
[0028] It should be noted that, in the description of the present invention, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0029] Based on the problem of low heat dissipation efficiency of the frequency conversion board of the existing drying equipment pointed out in the background technology, the utility model provides a drying equipment, which aims to effectively solve the problem of low heat dissipation efficiency of the frequency conversion board by abutting the frequency conversion board with the evaporator.
[0030] First refer to Figure 1 and Figure 2 ,in, Figure 1 This is a schematic diagram of the assembly of the frequency conversion board and the evaporator of the drying equipment of the utility model. Figure 2 It is a front view of a frequency conversion board and an evaporator of the drying equipment of the utility model.
[0031] like Figure 1 and Figure 2 As shown, the utility model provides a drying device, including a heat pump system and a frequency conversion board 1. The heat pump system includes a compressor, a condenser, a throttle valve and an evaporator 2 connected in sequence through pipelines. The frequency conversion board 1 abuts against the evaporator 2 to cool down through the evaporator 2.
[0032] The refrigerant flows through the compressor, condenser, throttle valve and evaporator 2 in sequence, so that the heat pump system can cool or heat the outside. Specifically, the high-pressure gas refrigerant discharged from the compressor flows into the condenser, releases heat in the condenser and is condensed into a high-pressure liquid refrigerant, then flows into the throttle valve, throttled to a low-pressure two-phase refrigerant, and then flows into the evaporator 2, where it absorbs heat and evaporates into a low-pressure gas refrigerant, and finally flows back into the compressor to complete the refrigerant cycle. In this process, the refrigerant evaporates and absorbs heat when flowing through the evaporator 2, absorbing heat from the environment. Therefore, the utility model utilizes the heat absorption characteristic of the refrigerant when flowing through the evaporator 2, and abuts the frequency conversion board 1 with the evaporator 2, thereby enabling the refrigerant to quickly absorb the heat in the frequency conversion board 1, so that the temperature of the frequency conversion board 1 is quickly reduced, thereby improving the heat dissipation efficiency of the frequency conversion board 1 and protecting the frequency conversion board 1 from damage due to overheating. In addition, since the temperature of the evaporator 2 is relatively low, the temperature of the frequency conversion board 1 can be quickly reduced, thereby reducing the size of the frequency conversion board 1 and achieving better heat dissipation effect of the frequency conversion board 1. After the frequency conversion board 1 is reduced in size, its installation is more convenient.
[0033] Preferably, if Figure 2 As shown, the frequency conversion board 1 includes a heating device 21, a circuit board 22 and a heat sink 23. The heating device 21 is mounted on the circuit board 22. The circuit board 22 is arranged on one side of the heat sink 23. The other side of the heat sink 23 abuts against the evaporator 2.
[0034] For a clothes dryer with multiple frequency conversion functions, since the electronic devices that can control the frequency conversion fan, frequency conversion motor, frequency conversion compressor and other devices to realize the frequency conversion function are usually concentrated on an electronic control board, resulting in a large number of heating devices 21 and high heat dissipation requirements, the utility model installs the heating device 21 on the circuit board 22, and the circuit board 22 is in contact with one side of the heat sink 23, and the other side of the heat sink 23 is in contact with the evaporator 2. The heat generated by the heating device 21 can be transferred to the evaporator 2 through the heat sink 23 and absorbed and taken away by the refrigerant in the evaporator 2. Therefore, the heat dissipation efficiency of the heating device 21 can be further accelerated through the heat sink 23 to ensure the normal operation of the heating device 21.
[0035] It is necessary to explain that the heating device 21 is an electronic component that generates heat during operation, such as a resistor, inductor, etc. The heating device 21 is installed on the circuit board 22 and connected through a wire or copper foil to achieve signal transmission and control.
[0036] For example, the heat sink 23 of the present invention is made of copper, which has a high thermal conductivity and can quickly transfer the heat from the heating device 21 to the evaporator 2, thereby effectively improving the heat dissipation efficiency of the heating device 21. In addition, the heat sink 23 can also be made of aluminum, silver, copper metal composite material, aluminum metal composite material, etc. The material of the heat sink 23 is not specifically limited in the present invention, and it can only be able to transfer the heat from the heating device 21 to the evaporator 2 in a timely and efficient manner.
[0037] Preferably, if Figure 2 As shown, a fin 24 is provided on the other side of the heat dissipation plate 23 , and the fin 24 is inserted into the heat exchange tube of the evaporator 2 and contacts the heat exchange tube.
[0038] When the evaporator 2 absorbs heat during evaporation, the heat absorption process of the refrigerant is achieved through heat convection and heat conduction. The heat around the evaporator 2 is first transferred to the fins 24 and the outer wall of the heat exchange tube through heat convection, and then heat is conducted to the inner wall of the heat exchange tube through the metal heat of the heat exchange tube sheet. Finally, the refrigerant absorbs the heat through heat convection on the inner wall of the heat exchange tube, thereby evaporating itself. The utility model inserts the fins 24 into the heat exchange tube of the evaporator 2 and contacts the heat exchange tube, thereby increasing the contact area between the heat sink 23 and the evaporator 2, increasing the heat dissipation area, and thus improving the heat dissipation efficiency. Not only can the heat in the heating device 21 be transferred to the outer wall of the heat exchange tube when the heat sink 23 abuts against the evaporator 2, but the heat on the heat sink 23 can also be directly transferred to the heat exchange tube through the fins 24, which can further improve the heat dissipation effect on the heating device 21. And the presence of the fins 24 can also effectively guide the flow of heat, so that the heat is conducted from the heat sink 23 to the evaporator 2 more quickly, further accelerating the heat dissipation process.
[0039] Preferably, if Figure 2 As shown, a plurality of fins 24 are provided, and the plurality of fins 24 are arranged at intervals. This can further increase the heat dissipation area, and the heat transfer rate of the heat sink 23 is accelerated by the simultaneous heat transfer of the plurality of fins 24, and the heat transfer effect on the heating device 21 is further improved, thereby improving the heat dissipation efficiency of the frequency conversion board 1.
[0040] Preferably, the material of the fin 24 is copper. Thus, the fin 24 has a high thermal conductivity, and can quickly transfer the heat on the heat sink 23 to the heat exchange tube, which can effectively improve the heat dissipation efficiency of the heating device 21. In addition, the material of the fin 24 can also be aluminum, silver, copper metal composite material, aluminum metal composite material, etc. The material of the fin 24 is not specifically limited in the utility model, and it can only meet the requirement of timely and efficient transfer of the heat on the heating device 21 to the evaporator 2.
[0041] Preferably, if Figure 2 As shown, the evaporator 2 is installed in the air duct 3, and the heat dissipation plate 23 is connected to the upper cover of the air duct 3 by snapping or bolting.
[0042] The frequency conversion board 1 can be fixed to the upper cover of the air duct 3 by means of clipping or bolting the heat sink 23 and the upper cover of the air duct 3. This not only fixes it firmly, but also enables the heat sink 23 to abut firmly against the evaporator 2 to ensure efficient heat dissipation of the heat sink 23, and facilitates the disassembly, assembly, maintenance and replacement of the frequency conversion board 1, reducing the difficulty of work.
[0043] Furthermore, the utility model preferably snaps the heat sink 23 with the upper cover of the air duct 3. Exemplarily, a snap is provided on the heat sink 23, and a socket is provided on the upper cover of the air duct 3, and the geometric shapes and sizes of the snap and the socket match each other. When installing, the heat sink 23 and the upper cover of the air duct 3 can be connected by simply aligning and inserting the snap and the socket; when disassembling, the snap can be pulled out of the socket, which is convenient and quick to disassemble.
[0044] Preferably, if Figure 2 As shown, a sealing structure 4 is provided between the heat sink 23 and the upper cover of the air duct 3. This can prevent the gas from flowing out through the gap between the heat sink 23 and the upper cover of the air duct 3 when the gas circulates in the air duct 3, thereby affecting the drying efficiency of the clothes. In addition, the sealing structure 4 can prevent pollutants such as dust and debris from entering the air duct 3, thereby preventing them from damaging the evaporator 2, the condenser and other components. This can not only extend the service life of the dryer, but also reduce maintenance costs.
[0045] Exemplarily, the sealing structure 4 in the present invention is a rubber sealing ring, a silicone sealing pad, a sealant, etc. These materials have good elasticity and corrosion resistance, and can closely fit the surface of the heat sink 23 and the upper cover of the evaporator 2 to form an effective sealing barrier.
[0046] Preferably, a heat-conducting adhesive is coated between the heating element 21 and the circuit board 22. The heat-conducting adhesive can further improve the heat dissipation effect of the heating element 21 and reduce the temperature of the heating element 21, thereby extending the service life.
[0047] It should be noted that the thermally conductive adhesive is a single-component, heat-conductive, room-temperature curing silicone adhesive sealant. It undergoes a condensation reaction under the action of moisture in the air to form a high-performance elastomer. This glue has excellent resistance to hot and cold alternation, aging resistance and electrical insulation performance, as well as excellent moisture resistance, shock resistance, corona resistance, leakage resistance and chemical medium resistance. It has a wide range of operating temperatures and can be used continuously at -60 to 280°C while maintaining performance. In addition, the thermally conductive adhesive does not swell and has good adhesion to most metal and non-metal materials. Applying the thermally conductive adhesive between the heating device 21 and the circuit board 22 can effectively strengthen the contact between the heating device 21 and the circuit board 22 and improve the heat dissipation efficiency. The thermally conductive adhesive can quickly conduct the heat generated by the heating device 21 to the circuit board 22, and then transfer it to the heat sink 23 through the circuit board 22, and finally be absorbed by the evaporator 2 to remove it, thereby reducing the temperature of the inverter board 1 and ensuring the stable operation of the dryer.
[0048] Preferably, if Figure 2 As shown, the drying device further includes a waterproof cover 5 , which is covered on the frequency conversion board 1 .
[0049] By covering the inverter board 1 with the waterproof cover 5, liquids such as water and moisture can be effectively prevented from entering the inverter board 1, thereby ensuring the normal operation of the inverter board 1 and extending its service life. In addition, the waterproof cover 5 can also provide a certain degree of dust and pollution protection for the inverter board 1.
[0050] For example, the waterproof cover 5 in the present invention is made of waterproof material, such as rubber, plastic or other waterproof materials, and the waterproof cover 5 can fit closely to the surface of the inverter board 1 to form an effective waterproof barrier. This design can prevent liquids such as water and moisture from entering the inverter board 1 through gaps or holes, thereby avoiding problems such as short circuits and corrosion.
[0051] Preferably, the drying device is a clothes dryer or a washer-dryer.
[0052] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.
Claims
1. A drying device, characterized in that: The invention comprises a heat pump system and a frequency conversion board (1), wherein the heat pump system comprises a compressor, a condenser, a throttle valve and an evaporator (2) connected in sequence through pipelines, and the frequency conversion board (1) abuts against the evaporator (2) to reduce the temperature through the evaporator (2).
2. The drying device according to claim 1, characterized in that: The frequency conversion board (1) comprises a heating device (21), a circuit board (22) and a heat dissipation plate (23); the heating device (21) is mounted on the circuit board (22); the circuit board (22) is arranged on one side of the heat dissipation plate (23); and the other side of the heat dissipation plate (23) is in contact with the evaporator (2).
3. The drying device according to claim 2, characterized in that: A fin (24) is provided on the other side of the heat dissipation plate (23); the fin (24) is inserted into the heat exchange tube of the evaporator (2) and is in contact with the heat exchange tube.
4. The drying device according to claim 3, characterized in that: A plurality of fins (24) are provided, and the plurality of fins (24) are arranged at intervals.
5. The drying device according to claim 3, characterized in that: The material of the fin (24) is copper.
6. The drying device according to claim 2, characterized in that: The evaporator (2) is installed in the air duct (3), and the heat dissipation plate (23) is snap-fitted or bolted to the upper cover of the air duct (3).
7. The drying device according to claim 6, characterized in that: A sealing structure (4) is provided between the heat dissipation plate (23) and the upper cover of the air duct (3).
8. The drying device according to claim 2, characterized in that: Thermally conductive glue is coated between the heating device (21) and the circuit board (22).
9. The drying device according to claim 1, characterized in that: The drying device further comprises a waterproof cover (5), wherein the waterproof cover (5) is covered on the frequency conversion board (1).
10. The drying device according to any one of claims 1 to 9, characterized in that: The drying equipment is a clothes dryer or a washer-dryer.