Heat pump type clothes dryer and electric control box assembly thereof

Abstract

The utility model relates to the technical field of heat pump type clothes dryers, in particular to a heat pump type clothes dryer and an electric control box assembly thereof, and aims to solve the problem that the heat dissipation effect of electrical components on an electric control board of an existing heat pump type clothes dryer is poor. In order to achieve the purpose, the electric control box assembly of the heat pump type clothes dryer comprises a box body, an electric control board, a radiator and a cooling fan, the electric control board is provided with a plurality of electric appliance elements, the radiator is arranged on the electric control board, the radiator comprises a first part and a second part, and the first part and the second part are arranged on the box body. The distance between the fins of the first part is smaller than that between the fins of the second part, and the cooling fan is located at one end of the first part. According to the electric control box assembly of the heat pump type clothes dryer, the radiator is structurally improved in a targeted mode on the basis of distribution of the power modules on the electric control board, differential heat dissipation is achieved in different areas of the electric control board, the overall heat dissipation effect of the electric control board can be improved, and energy consumption optimization is achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of heat pump dryers, specifically providing a heat pump dryer and its electrical control box assembly. Background Technology

[0002] A clothes dryer is a household appliance widely used in homes and businesses. Its main function is to quickly dry clothes by heating air to evaporate and remove moisture from them. In recent years, with the increasing demand for energy conservation and environmental protection, heat pump dryers have gradually become the mainstream in the market. The specific working principle of a heat pump dryer is as follows: The condenser of the heat pump system heats the air into hot, dry air. When this hot, dry air passes through wet clothes, the moisture in the clothes evaporates into water vapor, forming humid air. Subsequently, the humid air passes through the evaporator of the heat pump system, where the water vapor condenses into liquid water and is discharged, thus removing the moisture from the air and forming dry air. The dry air is then reheated by the condenser and enters the next cycle until the wet clothes are completely dry. This drying method significantly reduces energy consumption compared to electric heating drying, giving heat pump dryers a significant advantage in energy saving and environmental protection.

[0003] During the operation of a heat pump dryer, the ambient temperature around the control box typically reaches 60-70℃, while the temperature of high-power electrical components on the control board (such as the compressor drive module and the dryer fan drive module) approaches 100℃. This high-temperature environment not only reduces the working efficiency of the electrical components, affecting the dryer's drying efficiency, but also accelerates the aging of the components and may even cause them to fail, thus affecting the stable operation of the dryer, shortening its lifespan, reducing the user experience, and increasing user complaints. To address this issue, existing heat pump dryers usually incorporate a heat sink on the control box to dissipate heat from the electrical components on the control board. However, conventional heat sinks have limited heat dissipation capacity and are insufficient to effectively reduce the operating temperature of high-power electrical components, resulting in poor heat dissipation and failing to meet the high-efficiency operation requirements of heat pump dryers. Utility Model Content

[0004] The present invention aims to solve the above-mentioned technical problems, namely, to solve the problem of poor heat dissipation of electrical components on the control board of existing heat pump dryers.

[0005] In a first aspect, the present invention provides an electrical control box assembly for a heat pump dryer, the electrical control box assembly comprising:

[0006] Box body;

[0007] An electronic control board is disposed inside the box, and the electronic control board is provided with multiple electrical components;

[0008] A heat sink is disposed on the electronic control board and is attached to at least a portion of the plurality of electrical components. The heat sink includes a first portion and a second portion, wherein the fin spacing of the first portion is smaller than the fin spacing of the second portion.

[0009] A cooling fan is located at one end of the first part to deliver airflow to the first part.

[0010] In some feasible embodiments of the electrical control box assembly of the heat pump dryer described above, the electrical control board includes a first region and a second region. The total power of a plurality of electrical components disposed in the first region is higher than the total power of a plurality of electrical components disposed in the second region. The first part corresponds to the first region, and the second part corresponds to the second region.

[0011] In some feasible embodiments of the electrical control box assembly of the heat pump dryer described above, the electrical control board further includes a third region, wherein, in a direction perpendicular to the electrical control board, at least one electrical component in the third region is at a height higher than the electrical components in the first region and the second region.

[0012] In some feasible embodiments of the electrical control box assembly of the heat pump dryer described above, the box body includes a top wall, on which a first opening is provided, the first opening corresponding to the first part, and the cooling fan is disposed at the first opening.

[0013] In some feasible embodiments of the electrical control box assembly of the heat pump dryer described above, a second opening is also provided on the top wall, the second opening corresponding to the second part.

[0014] In some feasible embodiments of the electrical control box assembly of the heat pump dryer described above, a third opening is also provided on the top wall, the third opening corresponding to the third region.

[0015] In some feasible embodiments of the electrical control box assembly of the heat pump dryer described above, a baffle plate is also provided at the third opening, and the projection of the baffle plate along the height direction of the heat pump dryer at least covers the third opening.

[0016] In some feasible embodiments of the electrical control box assembly of the aforementioned heat pump dryer, the baffle plate includes a plurality of louvered structures arranged in a stepped manner along the height direction.

[0017] In some feasible embodiments of the electrical control box assembly of the aforementioned heat pump dryer, the box body further includes a bottom wall, on which a fourth opening corresponding to the first portion is formed; and / or

[0018] The bottom wall has a fifth opening corresponding to the second part; and / or

[0019] A sixth opening corresponding to the third region is provided on the bottom wall.

[0020] The electrical control box assembly of the heat pump dryer provided by this utility model improves the structure of the heat sink based on the distribution of power modules on the electrical control board. Specifically, the heat sink is divided into a first part and a second part, with the fin density of the first part being greater than that of the second part. At the same time, a cooling fan is adapted to the first part to achieve forced convection, making the heat dissipation capacity of the first part far exceed that of the second part. In this way, different areas of the electrical control board can achieve differentiated heat dissipation, which not only improves the overall heat dissipation effect of the electrical control board, but also optimizes energy consumption.

[0021] In a second aspect, the present invention provides a heat pump dryer, the heat pump dryer including the electrical control box assembly of the heat pump dryer described in any of the above technical solutions.

[0022] Since the aforementioned heat pump dryer is equipped with the aforementioned heat pump dryer electrical control box assembly, it possesses all the technical effects that the aforementioned heat pump dryer electrical control box assembly can achieve, which will not be repeated here. Attached Figure Description

[0023] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which:

[0024] Figure 1 This is one of the structural schematic diagrams of the electrical control box assembly of this utility model;

[0025] Figure 2 This is an exploded view of the electrical control box assembly of this utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the heat sink of this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the electronic control board of this utility model;

[0028] Figure 5 This is an exploded view of the housing, cooling fan, and water baffle of this utility model;

[0029] Figure 6 This is a schematic diagram of the structure of the water baffle of this utility model;

[0030] Figure 7 This is the second structural schematic diagram of the electrical control box assembly of this utility model, in which some structures are omitted;

[0031] Figure 8This is the third structural schematic diagram of the electrical control box assembly of this utility model, in which some structures are omitted;

[0032] Figure 9 This is a structural schematic diagram of the heat pump dryer of this utility model.

[0033] List of reference numerals in the attached diagram:

[0034] 1-Box body; 11-Top wall; 111-First opening; 112-Second opening; 113-Third opening; 12-Bottom wall; 121-Fourth opening; 122-Fifth opening; 123-Sixth opening; 2-Electrical control board; 21-First area; 211-First electrical component; 22-Second area; 221-Second electrical component; 23-Third area; 231-Third electrical component; 3-Radiator; 31-First part; 32-Second part; 4-Cooling fan; 5-Water baffle; 51-Louvre structure; 6-Casing; 7-Cylinder. Detailed Implementation

[0035] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0036] It should be noted that in the description of this utility model, terms such as "upper", "lower", "inner", and "outer" that indicate direction or positional relationship are based on the direction or positional relationship shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0037] Furthermore, it should be noted that in the description of this utility model, unless otherwise explicitly 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, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal connection of two components, and so on. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. In addition, the numerical terms used herein, such as "first," "second," and "third," are primarily (only) used to distinguish multiple similar objects, quantities, or processes; that is, they do not necessarily indicate any dependency and / or order between these objects, quantities, or processes. If a dependency and / or order is required, it will be explicitly stated in the context, or it will be obvious to those skilled in the art when understanding the specific embodiments.

[0038] like Figure 1 , Figure 2 and Figure 9 As shown, this embodiment of the present invention provides an electrical control box assembly for a heat pump dryer, which includes a box body 1, an electrical control board 2, and a radiator 3. The electrical control box assembly is disposed inside the casing 6 of the heat pump dryer, typically located below or to the side of the drum body 7. The electrical control board 2 is disposed inside the box body 1 and has multiple electrical components mounted thereon. The radiator 3 is specifically a finned radiator, which is mounted on the electrical control board 2 and is attached to at least a portion of the multiple electrical components for heat dissipation.

[0039] like Figure 3 As shown, the radiator 3 includes a first part 31 and a second part 32, with the fin spacing of the first part 31 being smaller than that of the second part 32. This design results in a larger surface area of ​​the fins in the first part 31 than that in the second part 32, in other words, a higher fin density in the first part 31 than in the second part 32. This increases the contact area between the first part 31 and the air, thereby improving the heat exchange efficiency between the air and the first part 31 of the radiator 3.

[0040] However, under natural convection conditions, although reducing the fin spacing increases the surface area, it also increases the airflow resistance through the fins, hindering airflow and reducing heat dissipation, thus limiting the improvement in heat dissipation efficiency. To further improve heat dissipation efficiency, the electrical control box assembly of this invention is also equipped with a cooling fan 4, located at one end of the first part 31, to deliver airflow to the first part 31, increasing airflow and further improving heat exchange. In this embodiment, the cooling fan 4 is fixedly mounted on the box body 1 and located at the top of the first part 31, enabling it to deliver airflow to the first part 31 from top to bottom, ensuring smooth airflow through the fin gaps and effectively improving heat dissipation performance.

[0041] In some specific embodiments, the cooling fan 4 is fixedly mounted on the radiator 3 and located at the top of the first part 31. It can deliver airflow to the first part 31 from top to bottom, ensuring that the airflow passes smoothly through the fin gaps and effectively improving the heat dissipation performance.

[0042] The electrical control box assembly of the heat pump dryer provided by this utility model improves the structure of the heat sink 3 by specifically modifying the distribution of power modules on the electrical control board 2. Specifically, the heat sink 3 is divided into a first part 31 and a second part 32, so that the fin density of the first part 31 is greater than that of the second part 32. At the same time, a cooling fan 4 is adapted to the first part 31 to achieve forced convection, so that the heat dissipation capacity of the first part 31 is much greater than that of the second part 32. In this way, different areas of the electrical control board 2 can achieve differentiated heat dissipation, which not only helps to improve the overall heat dissipation effect of the electrical control board 2, but also achieves energy consumption optimization.

[0043] like Figure 4 As shown, the control board 2 includes a first region 21 and a second region 22. The total power of the multiple electrical components disposed in the first region 21 is higher than the total power of the multiple electrical components disposed in the second region 22. A first part 31 corresponds to the first region 21, and a second part 32 corresponds to the second region 22. Specifically, in this embodiment, the electrical component in the first region 21 is the first electrical component 211, and the electrical component in the second region 22 is the second electrical component 221. For example, the first electrical component 211 can be a high-power electrical component such as a compressor drive module, a dryer fan drive module, or a motor drive module, while the second electrical component 221 can be a low-power electrical component such as a communication module or a storage module.

[0044] During installation, the first part 31 of the radiator 3 corresponds to the first region 21, the second part 32 corresponds to the second region 22, and the radiator 3 is attached to at least a part of the first electrical component 211 and / or the second electrical component 221 to ensure heat dissipation effect.

[0045] By aligning the first part 31 of the radiator 3 with the high-power area (first area 21) of the control board 2, the heat dissipation efficiency of the high-power electrical components is significantly improved. This invention improves the overall heat dissipation effect of the control board 2, especially the heat dissipation effect on high-power electrical components, through a zoned heat dissipation design, achieving differentiated heat dissipation in different areas and thus meeting the high-efficiency operation requirements of heat pump dryers.

[0046] Continue to refer to Figure 4 The control board 2 also includes a third region 23. In a direction perpendicular to the control board 2, at least one electrical component in the third region 23 has a higher height than the electrical components in the first region 21 and the second region 22. The electrical component in the third region 23 may be an inductor, capacitor, etc., or other electrical components with a higher height in a direction perpendicular to the control board 2. Specifically, in this embodiment, the electrical component in the third region 23 is a third electrical component 231.

[0047] Further reference Figure 4 The first region 21, the second region 22 and the third region 23 are arranged sequentially along the length of the electronic control board 2.

[0048] like Figure 5 As shown, the internal space of the box 1 is matched with the size of the electronic control board 2 to accommodate the electronic control board 2. The box 1 includes a top wall 11, on which a first opening 111, a second opening 112, and a third opening 113 are provided. Further, in this embodiment, the first opening 111, the second opening 112, and the third opening 113 are arranged sequentially along the length direction of the box 1.

[0049] like Figure 7 As shown, the first opening 111 corresponds to the first part 31. A cooling fan 4 is positioned at the first opening 111. Driven by the cooling fan 4, forced convection allows air to circulate between the fins of the first part 31, significantly enhancing the heat dissipation effect. (Continue to refer to...) Figure 7 The second opening 112 corresponds to the second part 32. Under natural convection, air can enter the interior of the housing 1 through the second opening 112 and exchange heat with the second part 32 of the radiator 3, thus optimizing airflow distribution. Figure 8 As shown, the third opening 113 corresponds to the third region 23, allowing air to enter the interior of the housing 1 through the third opening 113 and exchange heat with the third electrical component 231 in the third region 23. This arrangement combines forced convection and natural convection, optimizing airflow distribution and significantly improving the heat dissipation of the electrical components on the control board 2, ensuring stable operation of the heat pump dryer and extending its service life.

[0050] Continue to refer to Figure 5 The box body 1 also includes a bottom wall 12, which is disposed opposite to the top wall 11. The bottom wall 12 has a fourth opening 121, a fifth opening 122 and a sixth opening 123. Further, in this embodiment, the fourth opening 121, the fifth opening 122 and the sixth opening 123 are arranged sequentially along the length direction of the box body 1.

[0051] like Figure 7 As shown, the fourth opening 121 corresponds to the first part 31. Driven by the cooling fan 4, forced convection forces the air in the first part 31 of the radiator 3 to be exhausted to the outside through the fourth opening 121, thereby dissipating the heat of the electrical components to the outside of the housing 1. (Continue to refer to...) Figure 7 The fifth opening 122 corresponds to the second part 32. Under natural convection, air in the second part 32 of the radiator 3 can be exhausted from the inside of the housing 1 through the fifth opening 122, thereby dissipating heat from the electrical components to the outside of the housing 1. Figure 8As shown, the sixth opening 123 corresponds to the third region 23. Under natural convection, air in the third region 23 can be discharged from the inside of the housing 1 through the sixth opening 123. This arrangement combines forced convection and natural convection, optimizing airflow distribution and significantly improving the heat dissipation of electrical components on the control board 2, ensuring stable operation of the heat pump dryer and extending its service life.

[0052] In addition, such as Figure 5 As shown, the box 1 has an open design with an opening on the front to increase the airflow between the inside and outside environment of the box 1, thereby enhancing the heat dissipation effect inside the box 1.

[0053] However, during the operation of a heat pump dryer, condensate will drip down to the bottom of the drum 7. To prevent condensate from dripping into the inside of the housing 1, the electrical control box assembly of this invention also includes a baffle 5 to block the dripping condensate.

[0054] Furthermore, because the electrical components in the third area 23 are relatively tall, the base of the top wall 11 of the housing 1 cannot completely cover them, and condensate may drip onto the electrical components in the third area 23 through the third opening 113. To further enhance safety, such as... Figure 5 As shown, in this embodiment, the baffle plate 5 is set at the third opening 113, and its projection along the height direction of the heat pump dryer covers at least the third opening 113, thereby effectively preventing condensate from dripping into the third opening 113 and avoiding contact between the electrical components of the third area 23 and the condensate.

[0055] In contrast, in this embodiment, the electrical components in the first region 21 and the second region 22 are relatively low, and the base of the top wall 11 of the box 1 can completely cover the electrical components in the first region 21 and the second region 22, preventing condensate from dripping onto them. This design reduces the size of the baffle 5, saving component costs, while ensuring the reliability and safety of the electrical control box assembly.

[0056] Furthermore, such as Figure 6 and Figure 8 As shown, the baffle 5 includes multiple louvered structures 51 arranged in a stepped shape along the height direction, with gaps between adjacent louvered structures 51 to allow air to pass through. This design allows air to smoothly pass through the louvered structures 51 into the third opening 113, ensuring that air convection is not affected, while effectively blocking condensate dripping, thus combining heat dissipation and waterproofing functions.

[0057] This utility model embodiment also provides a heat pump dryer, which includes the electrical control box assembly of any of the above-mentioned heat pump dryers.

[0058] Specifically, such as Figure 9 As shown, the heat pump dryer of this utility model also includes a housing 6 and a drum 7. The drum 7 is disposed inside the housing 6, and the electrical control box assembly is disposed inside the housing 6 and located below the drum 7.

[0059] It is understandable that since this heat pump dryer is equipped with the aforementioned heat pump dryer control box assembly, it possesses all the technical effects of the aforementioned heat pump dryer control box assembly, which will not be elaborated further here.

[0060] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, 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 all fall within the protection scope of this utility model.

Claims

1. An electrical control box assembly for a heat pump dryer, characterized in that, The electrical control box assembly includes: Box body (1); An electrical control board (2) is disposed inside the housing (1), and the electrical control board (2) is provided with multiple electrical components; A radiator (3) is disposed on the electronic control board (2) and is attached to at least a portion of the plurality of electrical components. The radiator (3) includes a first part (31) and a second part (32), wherein the fin spacing of the first part (31) is smaller than the fin spacing of the second part (32). A cooling fan (4) is located at one end of the first part (31) to deliver airflow to the first part (31).

2. The electrical control box assembly of the heat pump dryer according to claim 1, characterized in that, The control board (2) includes a first region (21) and a second region (22). The total power of the multiple electrical components in the first region (21) is higher than the total power of the multiple electrical components in the second region (22). The first part (31) corresponds to the first region (21), and the second part (32) corresponds to the second region (22).

3. The electrical control box assembly of the heat pump dryer according to claim 2, characterized in that, The control board (2) further includes a third region (23), in a direction perpendicular to the control board (2), at least one electrical component in the third region (23) is at a height higher than the electrical components in the first region (21) and the second region (22).

4. The electrical control box assembly of the heat pump dryer according to claim 3, characterized in that, The box body (1) includes a top wall (11), and a first opening (111) is provided on the top wall (11). The first opening (111) corresponds to the first part (31), and the heat dissipation fan (4) is arranged at the first opening (111).

5. The electrical control box assembly of the heat pump dryer according to claim 4, characterized in that, A second opening (112) is also provided on the top wall (11), which corresponds to the second part (32).

6. The electrical control box assembly of the heat pump dryer according to claim 4, characterized in that, A third opening (113) is also provided on the top wall (11), and the third opening (113) corresponds to the third region (23).

7. The electrical control box assembly of the heat pump dryer according to claim 6, characterized in that, A baffle plate (5) is also provided at the third opening (113), and the projection of the baffle plate (5) along the height direction of the heat pump dryer covers at least the third opening (113).

8. The electrical control box assembly of the heat pump dryer according to claim 7, characterized in that, The water baffle (5) includes multiple louvered structures (51) arranged in a stepped shape along the height direction.

9. The electrical control box assembly of the heat pump dryer according to claim 3, characterized in that, The box body (1) also includes a bottom wall (12), on which a fourth opening (121) corresponding to the first part (31) is provided; and / or The bottom wall (12) has a fifth opening (122) corresponding to the second part (32); and / or The bottom wall (12) has a sixth opening (123) corresponding to the third region (23).

10. A heat pump dryer, characterized in that, The heat pump dryer includes the electrical control box assembly of the heat pump dryer according to any one of claims 1 to 9.

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