Waterproof structure and heat pump host

Abstract

The utility model discloses a waterproof structure and a heat pump host. The waterproof structure comprises a machine shell, and the machine shell is provided with a first ventilation part communicated with outside air; the electric control box comprises a box body and a circuit board module; and the circuit board module is arranged in the box body, and obtains external air through the second ventilation part for heat dissipation. The side, close to the first ventilation part, of the box body is provided with a second ventilation part, the second ventilation part communicates with the first ventilation part, and the first ventilation part is located on the lower side of the second ventilation part so that the first ventilation part and the second ventilation part can form a waterproof channel in the vertical direction. Liquid in external air is discharged out of the waterproof channel under the action of gravity, and the water seepage risk is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pumps, in particular to a waterproof structure and a heat pump host. Background Art

[0002] Existing air-source heat pumps usually need to use circuit boards to control operation, and the circuit boards are usually placed in the electrical control box of the heat pump host. Considering the heat dissipation requirements of the circuit board, heat dissipation holes are usually set on one side of the circuit board as a ventilation structure. However, during the ventilation process, moisture in the air also passes through the heat dissipation holes, and there is a risk of water seepage at the heat dissipation holes. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an improved waterproof structure and a heat pump host to reduce the risk of water seepage in the heat dissipation holes on the electric control box.

[0004] The technical solution adopted by the utility model to solve the technical problem is: to provide a waterproof structure, which includes:

[0005] A casing, wherein the casing is provided with a first ventilation portion communicating with external air;

[0006] An electric control box, including a box body and a circuit board module;

[0007] The box body is provided with a second ventilation part on one side close to the first ventilation part, the second ventilation part is connected with the first ventilation part, and the first ventilation part is located at the lower side of the second ventilation part, so that the first ventilation part and the second ventilation part form a waterproof channel in the vertical direction, and when the external air passes through the waterproof channel, the liquid in the external air is discharged from the waterproof channel under the action of gravity;

[0008] The circuit board module is disposed in the box body, and the circuit board module obtains external air through the second ventilation part to dissipate heat.

[0009] Preferably, the box body comprises a first long side wall and a first short side wall connected to each other, and the second ventilation portion is arranged on the first short side wall.

[0010] Preferably, the second ventilation portion comprises ventilation holes arranged on the first short side wall;

[0011] A water retaining portion is formed on the first short side wall outside the ventilation hole, and the first ventilation portion is located below the ventilation hole.

[0012] Preferably, a water retaining plate is provided on the water retaining portion.

[0013] Preferably, the box body further includes a second top plate and a second bottom plate; the two first short side walls are respectively connected to the first long side wall, and the first long side wall and the two first short side walls are respectively connected between the second top plate and the second bottom plate;

[0014] The first long side wall, the first short side wall, the second top plate and the second bottom plate together define an inspection opening.

[0015] Preferably, the housing comprises a second long side wall and a second short side wall connected to each other; and the first ventilation portion is arranged on the second long side wall.

[0016] Preferably, the second long side wall comprises a main body and a mounting plate which are detachably connected, the mounting plate is located below the second ventilation part, and the first ventilation part is arranged on the mounting plate.

[0017] Preferably, the first ventilation portion includes a shutter arranged on the second long side wall.

[0018] Preferably, the waterproof structure further includes a fan disposed between the first ventilation portion and the second ventilation portion.

[0019] The utility model also provides a heat pump host, which comprises the waterproof structure described in any one of the above items.

[0020] The utility model has at least the following beneficial effects: the first ventilation part on the casing is arranged at the lower side of the second ventilation part on the box body of the electric control box, the first ventilation part and the second ventilation part form a waterproof channel in the vertical direction, and when the external air passes through the waterproof channel, the liquid in the external air is discharged from the waterproof channel under the action of gravity, thereby reducing the risk of water seepage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the utility model, the utility model will be further described below in conjunction with the accompanying drawings and embodiments, in which:

[0022] Figure 1 It is a schematic diagram of the overall structure of the heat pump host in some embodiments of the utility model;

[0023] Figure 2 yes Figure 1 The schematic diagram of the structure of the heat pump main unit after removing part of the casing is shown;

[0024] Figure 3 yes Figure 2 The enlarged structural diagram of part A of the heat pump main unit is shown;

[0025] Figure 4 yes Figure 3 The enlarged structural diagram of the shutters of the heat pump main unit is shown;

[0026] Figure 5 yes Figure 2 The schematic diagram of the structure of the electrical control box of the heat pump main unit is shown. DETAILED DESCRIPTION

[0027] In order to have a clearer understanding of the technical features, purposes and effects of the present utility model, the specific implementation methods of the present utility model are now described in detail with reference to the accompanying drawings.

[0028] See also Figure 1 to Figure 2 , Figure 1 The overall structure of a heat pump host according to an embodiment of the utility model is shown. The heat pump host comprises a waterproof structure, which comprises a casing 1 , an outdoor heat exchanger 10 arranged inside the casing 1 , and an electric control box 20 . Figure 2 for Figure 1 The schematic diagram of the structure after removing part of the casing 1, in which the up and down directions correspond to the height directions of the casing 1, shows that the electric control box 20 is located below the outdoor heat exchanger 10 along the height direction of the casing 1, that is, the electric control box 20 is closer to the ground relative to the outdoor heat exchanger 10, which makes it convenient for personnel to inspect and repair the electric control box 20.

[0029] like Figure 5 As shown, in some embodiments, the electric control box 20 includes a box body 24, a circuit board module 23, and a wiring terminal module 25. The circuit board module 23 and the wiring terminal module 25 are both arranged in the box body 24. The wiring terminal module 25 is arranged below the circuit board module 23, and is used to connect external cables and the circuit board module 23 respectively, as a connection medium between the external cables and the circuit board module 23. The maintenance personnel only need to connect the cables at the wiring terminal module 25 to achieve the connection between the external cables and the circuit board module 23. In this way, it is convenient for the maintenance personnel to connect the cables to the circuit board.

[0030] like Figure 3 As shown, in some embodiments, the housing 1 is provided with a first ventilation portion 21 connected to the outside air, and the box body 24 is provided with a second ventilation portion 22 on the side close to the first ventilation portion 21, and the first ventilation portion 21 and the second ventilation portion 22 are connected. That is, air can flow between the first ventilation portion 21 and the second ventilation portion 22 to form natural convection. When the heat pump host is running, the circuit board module 23 and the terminal module 25 will generate heat, and the circuit board module 23 obtains external air through the second ventilation portion 22 for heat dissipation. Figure 3In the airflow path shown by the dotted arrow, external air can enter the second ventilation part 22 through the first ventilation part 21, and perform natural convection with the air inside the box body 24 of the electric control box 20 to complete heat exchange, thereby dissipating heat to the circuit board module 23 and the terminal module 25. However, when the water content of the external air is high, the humid air with a high water content is prone to accumulate excessive moisture in the second ventilation part 22 after passing through the second ventilation part 22, which will have an adverse effect on the normal operation of the circuit board module 23 and the terminal module 25. In order to solve the problem of waterproofing, the first ventilation part 21 is located on the lower side of the second ventilation part 22, so that the first ventilation part 21 and the second ventilation part 22 form a waterproof channel in the vertical direction. When the external air passes through the waterproof channel, the liquid in the external air is discharged from the waterproof channel under the action of gravity. The vertical direction can be referred to Figure 2 and Figure 3 That is, the first ventilation part 21 is completely located below the second ventilation part 22, because the moisture in the air has a tendency to sink and drip under the action of gravity, thereby reducing the moisture content in the air entering the second ventilation part 22, avoiding excessive moisture accumulation in the second ventilation part 22, and reducing the risk of water seepage.

[0031] like Figure 2 In the embodiment shown, the housing 1 has a length direction, a width direction and a height direction. The length direction can refer to Figure 1 The middle arrow indicates the direction of "length", and the width direction can be referred to Figure 1 The middle arrow indicates the direction of "width", and the height direction can be referred to Figure 1 The middle arrows indicate the directions of "up" and "down". The casing 1 includes a second long side wall 11, a second short side wall 12, a first top plate 13 and a first bottom plate. The second long side wall 11 extends along the length direction of the casing 1, and the second short side wall 12 extends along the width direction of the casing 1. The two second long side walls 11 and the two second short side walls 12 are connected to form a closed rectangular outline. The two second long side walls 11 and the two second short side walls 12 are respectively connected between the first top plate 13 and the first bottom plate to form a casing 1 similar to a rectangular parallelepiped. In addition, the electric control box 20 is arranged at one end of the casing 1 along its length direction.

[0032] like Figure 3 and Figure 5 In the embodiment shown, the box body 24 also has a length direction, a width direction and a height direction. The length direction can be referred to as Figure 5 The middle arrow indicates the direction of "length", and the width direction can be referred to Figure 5 The middle arrow indicates the direction of "width", and the height direction can be referred to Figure 5The middle arrows indicate the directions of "up" and "down". Among them, the length direction of the box body 24 is perpendicular to the length direction of the casing 1, and the length direction of the box body 24 is consistent with the width direction of the casing 1. The box body 24 includes a first long side wall 241, a first short side wall 242, a second top plate 243 and a second bottom plate 244. The two second short side walls 12 are respectively connected to the first long side wall 241, and together form a "C"-shaped outline. The first long side wall 241 and the two first short side walls 242 are respectively connected between the second top plate 243 and the second bottom plate 244, and together form a box body 24 with one end open and the other end closed, and the opening of the box body 24 forms an inspection port.

[0033] The circuit board module 23 and the terminal module 25 are respectively connected to the first long side wall 241. The inspection opening is provided for the maintenance personnel to inspect the circuit board module 23 and the terminal module 25. Among them, the first long side wall 241 extends along the length direction of the box body 24, and the first short side wall 242 extends along the width direction of the box body 24. Therefore, the first long side wall 241 is perpendicular to the second long side wall 11, and the second short side wall 12 is perpendicular to the first short side wall 242. The second long side wall 11 is parallel to the first short side wall 242. The first ventilation part 21 is arranged on the second long side wall 11 of the casing 1, and the second ventilation part 22 is arranged on the first short side wall 242 of the box body 24 of the electric control box 20. The circuit board module 23 and the terminal module 25 connected to the first long side wall 241 are arranged facing the second short side wall 12 of the casing 1.

[0034] like Figure 3 and Figure 5 In the illustrated embodiment, the second ventilation portion 22 includes a ventilation hole provided on the first short side wall 242 , and a water retaining portion 26 is formed on the first short side wall 242 outside the ventilation hole.

[0035] In other embodiments, the water retaining portion 26 is further provided with a water retaining plate (not shown), that is, the first short side wall 242 where the second ventilation portion 22 is located may also be provided with a water retaining plate on the water retaining portion 26 below the second ventilation portion 22. Therefore, the area on the first short side wall 242 other than the ventilation hole forms a water retaining plate, and the water retaining plate is arranged toward the first ventilation portion 21. When the external air flows between the first ventilation portion 21 and the second ventilation portion 22, the flow path of the external air is increased, so that the moisture in the humid external air is blocked by the water retaining plate.

[0036] In some embodiments, the first ventilation portion 21 is entirely located below the ventilation hole, that is, the height of the uppermost end of the first ventilation portion 21 is lower than the height of the lowermost end of the ventilation hole. The water retaining portion 26 can prevent external rainwater from drifting into the box body 24. In other embodiments, the second ventilation portion 22 can also include ventilation slots, ventilation nets, etc.

[0037] In some embodiments, in order to ensure that the ventilation holes have sufficient air intake, the area of ​​the ventilation holes may account for at least half of the total area of ​​the first short side wall 242. Figure 5 In the illustrated embodiment, the area of ​​the ventilation hole is greater than half of the total area of ​​the first short side wall 242 .

[0038] like Figures 1 to 3 In the illustrated embodiment, the second long side wall 11 includes a main body 110 and a mounting plate 111 that are detachably connected, the mounting plate 111 being located below the second ventilation portion 22, and the first ventilation portion 21 being disposed on the mounting plate 111. Specifically, a notch is disposed at the lower edge of the main body 110, and the mounting plate 111 is mounted at the notch. After the mounting plate 111 is removed, other components inside the housing 1 can be exposed for maintenance, and at least a portion of the first short side wall 242 of the box body 24 can be exposed for cleaning of accumulated water and dust.

[0039] like Figures 1 to 3 In the illustrated embodiment, the first ventilation portion 21 includes shutters disposed on the casing 1 , which are arranged along the height direction of the casing 1 , and the height of the uppermost position of the shutters is lower than the height of the lowermost position of the ventilation holes on the box body 24 .

[0040] Furthermore, if Figure 4 In the illustrated embodiment, the shutter includes a window 210 and a window plate 211. The window 210 passes through the inner and outer surfaces of the casing 1 along the thickness direction of the casing 1. The window plate 211 is arranged at the window 210 and tilted downward, so as to prevent rainwater from entering the casing 1 through the window 210.

[0041] Furthermore, if Figure 3 In the illustrated embodiment, the first ventilation portion 21 and the second ventilation portion 22 are spaced apart. Specifically, the second long side wall 11 of the housing 1 and the first short side wall 242 of the box body 24 are spaced apart in parallel, so the shutters on the housing 1 and the ventilation holes on the box body 24 are also spaced apart. Thus, a cavity is formed between the first ventilation portion 21 and the second ventilation portion 22.

[0042] In some embodiments, the heat pump host further includes a fan (not shown) disposed between the first ventilation portion 21 and the second ventilation portion 22. Specifically, the fan can be disposed in the gap formed between the shutter on the housing 1 and the ventilation hole on the box body 24 to accelerate the airflow and water evaporation in the gap, thereby avoiding excessive water vapor accumulation in the second ventilation portion 22.

[0043] It can be understood that the above embodiments only express the preferred implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the utility model. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the utility model, the above-mentioned technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the utility model. Therefore, all equivalent changes and modifications made to the scope of the claims of the utility model should fall within the scope of the claims of the utility model.

Claims

1. A waterproof structure, characterized in that: include: A casing (1), wherein the casing (1) is provided with a first ventilation portion (21) communicating with external air; An electric control box (20), comprising a box body (24) and a circuit board module (23); The box body (24) is provided with a second ventilation part (22) on one side close to the first ventilation part (21), the second ventilation part (22) is connected with the first ventilation part (21), and the first ventilation part (21) is located below the second ventilation part (22), so that the first ventilation part (21) and the second ventilation part (22) form a waterproof channel in the vertical direction, and when external air passes through the waterproof channel, liquid in the external air is discharged from the waterproof channel under the action of gravity; The circuit board module (23) is arranged in the box body (24), and the circuit board module (23) obtains external air through the second ventilation part (22) to dissipate heat.

2. The waterproof structure according to claim 1, characterized in that : The box body (24) comprises a first long side wall (241) and a first short side wall (242) connected to each other, and the second ventilation portion (22) is arranged on the first short side wall (242).

3. The waterproof structure according to claim 2, characterized in that: The second ventilation portion (22) comprises a ventilation hole arranged on the first short side wall (242); A water retaining portion (26) is formed outside the ventilation hole on the first short side wall (242), and the first ventilation portion (21) is located below the ventilation hole.

4. The waterproof structure according to claim 3, characterized in that: The water retaining portion (26) is provided with a water retaining plate.

5. The waterproof structure according to claim 2, characterized in that: The box body (24) further includes a second top plate (243) and a second bottom plate (244); The two first short side walls (242) are respectively connected to the first long side wall (241); the first long side wall (241) and the two first short side walls (242) are respectively connected between the second top plate (243) and the second bottom plate (244); The first long side wall (241), the first short side wall (242), the second top plate (243) and the second bottom plate (244) together define an inspection opening.

6. The waterproof structure according to claim 1 or 2, characterized in that: The housing (1) comprises a second long side wall (11) and a second short side wall (12) connected to each other; The first ventilation portion (21) is arranged on the second long side wall (11).

7. The waterproof structure according to claim 6, characterized in that: The second long side wall (11) comprises a detachably connected main body (110) and a mounting plate (111), wherein the mounting plate (111) is located below the second ventilation portion (22), and the first ventilation portion (21) is arranged on the mounting plate (111).

8. The waterproof structure according to claim 6, characterized in that: The first ventilation portion (21) comprises a shutter arranged on the second long side wall (11).

9. The waterproof structure according to claim 1, characterized in that: The waterproof structure further comprises a fan arranged between the first ventilation part (21) and the second ventilation part (22).

10. A heat pump host, characterized in that: The waterproof structure comprises the waterproof structure according to any one of claims 1 to 9.

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