A heat dissipation control box and multi-split outdoor unit thereof

Abstract

The utility model discloses a heat dissipation control box, which is arranged in a multi-split outdoor unit, comprising a control box body and a heat dissipation component matched with the control box body, wherein the heat dissipation component comprises a fresh air introduction pipe and an exhaust air duct; wherein, one end of the fresh air introduction pipe is connected to the control box body and the other end thereof is connected to the outside air; one end of the exhaust air duct is connected to the control box body and the other end thereof is arranged on the air guide path of the axial flow fan component of the multi-split outdoor unit; compared with the prior art, the utility model cooperates with the fresh air introduction pipe and the exhaust air duct, and when the multi-split outdoor unit is running, the operation of the axial flow fan component of the multi-split outdoor unit is used as a power to introduce the outside air into the control box body from the fresh air introduction pipe, so as to discharge the heat in the control box body through the exhaust air duct, which can at least reduce the installation of the fan, and reduce the cost of heat dissipation materials and the cost of heat dissipation operation.

Description

Technical Field

[0001] The utility model relates to the technical field of outdoor unit structures, in particular to a heat dissipation control box and a multi-split outdoor unit thereof. Background Art

[0002] Air conditioners are widely used in people's daily life to meet people's requirements for comfortable working and living environment. Among them, multi-split central air conditioner is a type of household central air conditioner, commonly known as "one to many", which refers to a primary refrigerant air conditioning system in which one outdoor unit is connected to two or more indoor units through piping, with air cooling heat exchange on the outdoor side and direct evaporation heat exchange on the indoor side; multi-split system is currently increasingly widely used in small and medium-sized buildings and some public buildings.

[0003] The outdoor unit of a multi-split central air conditioner generally includes an axial flow fan assembly arranged on the top thereof and a control box arranged therein, wherein the control box includes a control box body and a compressor drive board and a fan drive board arranged therein. The compressor drive board and the fan drive board need to consider heat dissipation, and generally a radiator or refrigerant heat dissipation method is used to dissipate heat for the compressor drive board and the fan drive board and other heat dissipation modules. However, the control box body is also provided with high-power heating elements such as transformers and chokes. These high-power heating elements run in the control box body for a long time, and the heat dissipation by themselves cannot meet the actual needs. Traditionally, an exhaust fan is generally provided for heat dissipation.

[0004] For example, CN205980190U discloses an electric control box for a multi-split air conditioner, comprising an electric control box body, an electric control box body enclosure, an electric control module and a fan, wherein the electric control box body enclosure is arranged inside the electric control box body, and the fan is arranged above the electric control box body; an electric control module mounting plate is provided on the electric control box body enclosure, and the electric control module is arranged on the electric control module mounting plate; it also includes a radiator and an air guide cover, the radiator is connected to the electric control module, and the air guide cover is arranged on the outside of the radiator; the air guide cover includes a baffle and mounting plates arranged on both sides of the baffle, the baffle includes a first baffle and a second baffle, and the angle between the first baffle and the second baffle is 120°-135°.

[0005] The multi-split air conditioner electric control box mentioned above uses a radiator to dissipate heat from the heat dissipation module, and a fan to dissipate heat from other high-power heating elements. However, there is a problem that the heat dissipation cost design of the multi-split air conditioner electric control box is relatively high. Utility Model Content

[0006] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a heat dissipation control box and a multi-split outdoor unit thereof, so as to solve the problem of relatively high heat dissipation cost design of the multi-split air conditioner electric control box in the prior art.

[0007] To achieve the above-mentioned purpose, the first aspect of the utility model adopts the following technical solution: a heat dissipation control box is arranged in the multi-split outdoor unit, including a control box body and a heat dissipation component matched with the control box body, and the heat dissipation component includes:

[0008] A fresh air introduction duct, one end of which is connected to the control box body and the other end of which is connected to the outside air;

[0009] An exhaust air duct, one end of which is connected to the control box body and the other end of which is arranged on the air guide path of the axial flow fan assembly of the multi-split outdoor unit.

[0010] The second aspect of the utility model adopts the following technical solution: a multi-split outdoor unit, comprising a heat dissipation control box as described in the first aspect of the utility model.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The heat dissipation control box cooperates with the fresh air introduction duct and the exhaust duct. When the multi-split outdoor unit is running, the axial flow fan component of the multi-split outdoor unit is used as power to introduce the outside air into the control box body from the fresh air introduction duct, so as to discharge the heat in the control box body through the exhaust duct. At least the installation of fans can be reduced, and the cost of heat dissipation materials and heat dissipation operation costs can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural schematic diagram of a multi-split outdoor unit in one embodiment of the utility model;

[0014] Figure 2 for Figure 1 Schematic diagram of the local structure;

[0015] Figure 3 for Figure 2 A structural schematic diagram of a heat dissipation control box;

[0016] Figure 4 for Figure 3 Exploded diagram of

[0017] Figure 5 for Figure 3 Structural diagram of the fresh air introduction duct;

[0018] Figure 6 for Figure 3 Schematic diagram of the structure of the central exhaust duct.

[0019] The figure marks in the drawings of the specification include: control box body 1, heat dissipation component 2, fresh air introduction duct 21, fresh air introduction hole 211, connecting block 212, exhaust air duct 22, exhaust air outlet 221, axial flow fan assembly 3, end face sealing ring 4, air inlet 5, waterproof connector 6, connecting plate 61, and water retaining plate 62. DETAILED DESCRIPTION

[0020] The utility model is further described in detail below through specific implementation methods:

[0021] like Figure 2 and Figure 3 As shown, an embodiment of the utility model proposes a heat dissipation control box, which is arranged in a multi-split outdoor unit, including a control box body 1 and a heat dissipation component 2 matched with the control box body 1, the heat dissipation component 2 includes a fresh air introduction pipe 21 and an exhaust air duct 22; wherein, one end of the fresh air introduction pipe 21 is connected to the control box body 1 and the other end thereof is connected to the outside air; one end of the exhaust air duct 22 is connected to the control box body 1 and the other end thereof is arranged on the air guide path of the axial flow fan component 3 of the multi-split outdoor unit.

[0022] The heat dissipation control box cooperates with the fresh air introduction duct 21 and the exhaust duct 22. When the multi-split outdoor unit is running, the axial flow fan assembly 3 of the multi-split outdoor unit is used as a power to introduce the outside air into the control box body 1 from the fresh air introduction duct 21, so as to discharge the heat in the control box body 1 through the exhaust duct 22, which can at least reduce the installation of fans and reduce the cost of heat dissipation materials and heat dissipation operation costs.

[0023] In order to better understand the present solution, the structures of the fresh air introduction duct 21 and the exhaust air duct 22 will be further optimized below.

[0024] like Figure 4 and Figure 5 As shown, according to another embodiment of the utility model, a heat dissipation control box is provided, wherein an air inlet installation port is provided at the bottom of the side wall of the control box body 1, one end of a fresh air introduction duct 21 is connected to the air inlet installation port and is provided with an end face sealing ring 4.

[0025] Specifically, a fresh air flange is provided at the air inlet installation port, and a first flange is also formed at one end of the fresh air introduction pipe 21. After the fresh air flange is connected to the first flange, it is fixed by multiple bolts and an end face sealing ring 4 is clamped between the fresh air flange and the first flange for sealing, thereby ensuring that the fresh air introduction pipe 21 is sealed and connected to the control box body 1 to avoid air leakage.

[0026] Further Figure 2The end of the fresh air introduction duct 21 away from the control box body 1 is formed with a connection block 212 that is sealed thereto, and a plurality of fresh air introduction holes 211 are evenly distributed on the connection block 212. External cold air enters the fresh air introduction duct 21 through the plurality of fresh air introduction holes 211, and is then introduced into the control box body 1 to take away the heat generated in the control box body 1. The air after heat exchange is discharged from the exhaust duct 22 to complete the heat dissipation of the control box body 1.

[0027] Based on the above scheme:

[0028] The connection block 212 is fixedly connected to a carrier in the multi-split outdoor unit, and the carrier has an air guide cavity, and the outer wall of the carrier has an air inlet 5 located on the outer wall of the multi-split outdoor unit and connected to the air guide cavity. Here, the carrier can be the bottom plate of the box of the multi-split outdoor unit, and the cold air from the outside enters the air guide cavity from the air inlet 5, and then is introduced into the fresh air introduction duct 21 through a number of fresh air introduction holes 211; the connection block 212 is fixedly connected to the bottom plate, which can improve the installation stability of the fresh air introduction duct 21; and the cooperation of the air guide cavity can also prevent insects from reaching the fresh air introduction hole 211, and prevent insects from entering the control box body 1 from the fresh air introduction duct 21; the aperture of the fresh air introduction hole 211 can also be controlled, for example, the aperture of the fresh air introduction hole 211 is designed to be 4mm, which can basically prevent insects from entering the fresh air introduction duct 21, and the aperture of the fresh air introduction hole 211 can also be adjusted according to actual conditions.

[0029] like Figure 4 and Figure 6 As shown, according to another embodiment of the utility model, a heat dissipation control box is provided, wherein an exhaust interface is provided on the top of the control box body 1, and the exhaust interface is connected to one end of the exhaust duct 22 through a waterproof connector 6.

[0030] Specifically, the waterproof connector 6 includes a connecting plate 61, one end of which is sealed and connected to the exhaust interface and a water retaining plate 62 is formed in the middle of the other end; after the water retaining plate 62 is inserted into the exhaust duct 22, the other end of the connecting plate 61 is connected after being abutted against the end of the exhaust duct 22.

[0031] In this embodiment:

[0032] The connection plate 61 is specifically an exhaust flange, and one end of the exhaust flange away from its connection ear is welded at the exhaust interface, and a water retaining plate 62 is welded on the inner edge of the connection ear end of the exhaust flange. When connected, the water retaining plate 62 is inserted into the exhaust duct 22 for adaptation, and then the second flange on the end of the exhaust duct 22 is matched with the exhaust flange and fixed by multiple bolts; after the exhaust flange is connected to one end of the exhaust duct 22 through the match between the exhaust flange and the water retaining plate 62, a good connection can be made, with good waterproof performance.

[0033] Furthermore, one end of the exhaust duct 22 is connected to the control box body 1 and then bent so that the other end is arranged downward; specifically, the exhaust duct 22 is U-shaped, and its arrangement prevents rainwater from entering the exhaust duct 22, thereby ensuring safe operation inside the control box body 1.

[0034] At the same time, the exhaust duct 22 is sealed at one end away from the control box body 1 and has a plurality of exhaust holes 221. The diameter of the exhaust holes 221 does not exceed 2 mm. In this embodiment, the diameter of the exhaust holes 221 is designed to be 2 mm, which can prevent insects from entering the exhaust duct 22. After the diameter of the exhaust holes 221 is determined, the number of the exhaust holes 221 is calculated based on the exhaust volume.

[0035] like Figure 1 and Figure 2 As shown, according to another embodiment of the present utility model, a multi-split outdoor unit includes an outdoor unit body and a heat dissipation control box as described in any of the above embodiments, which is arranged in the outdoor unit body.

[0036] When the multi-split outdoor unit is in operation, the axial flow fan assembly 3 on the top of the outdoor unit body is running, and the axial flow fan assembly 3 forms a suction force to draw the cold air from the outside into the air guide cavity from the air inlet 5, and then enters the fresh air introduction duct 21 through the fresh air introduction hole 211, and then is introduced into the control box body 1 to take away the heat generated in the control box body 1. The air after heat exchange is discharged from the exhaust duct 22 and discharged from the axial flow fan assembly 3 on the top of the outdoor unit body.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A heat dissipation control box, arranged in a multi-split outdoor unit, comprising a control box body and a heat dissipation component matched with the control box body, characterized in that: The heat dissipation component comprises: A fresh air introduction duct, one end of which is connected to the control box body and the other end of which is connected to the outside air; An exhaust air duct, one end of which is connected to the control box body and the other end of which is arranged on the air guide path of the axial flow fan assembly of the multi-split outdoor unit.

2. A heat dissipation control box according to claim 1, characterized in that: An air inlet installation port is arranged at the bottom of the side wall of the control box body, and one end of the fresh air introduction pipe is connected to the air inlet installation port and is matched with an end face sealing ring.

3. A heat dissipation control box according to claim 1 or 2, characterized in that: A connection block that is sealed to the fresh air introduction duct is formed at one end away from the control box body, and a plurality of fresh air introduction holes are evenly distributed on the connection block.

4. A heat dissipation control box according to claim 3, characterized in that: The connection block is fixedly connected to a carrier in the multi-split outdoor unit. The carrier is provided with an air guide cavity. An air inlet is arranged on the outer wall of the multi-split outdoor unit and communicated with the air guide cavity.

5. The heat dissipation control box according to claim 1, characterized in that: An exhaust interface is arranged on the top of the control box body, and the exhaust interface is connected to one end of the exhaust duct through a waterproof connector.

6. A heat dissipation control box according to claim 5, characterized in that: The waterproof connector comprises a connection plate, one end of which is sealed and connected to the exhaust interface and a water retaining plate is formed in the middle of the other end; after the water retaining plate is inserted into the exhaust duct, the other end of the connection plate abuts against the end of the exhaust duct and is connected.

7. A heat dissipation control box according to claim 1, 5 or 6, characterized in that: One end of the exhaust air duct is connected to the control box body and then bent so that the other end is arranged downward.

8. A heat dissipation control box according to claim 1, 5 or 6, characterized in that: The exhaust air duct is sealed at one end away from the control box body and is provided with a plurality of exhaust outlet holes.

9. A heat dissipation control box according to claim 8, characterized in that: The diameter of the exhaust holes does not exceed 2 mm.

10. A multi-split outdoor unit, characterized in that: It comprises a heat dissipation control box as described in any one of claims 1-9.

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