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Heat exchange unit and air conditioner

An air-conditioning device and heat exchanger technology, applied in air-conditioning systems, heating methods, water heaters, etc., can solve problems such as uncontrollable unit heat dissipation, and achieve the effect of suppressing large-scale and failure

Active Publication Date: 2021-04-09
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the case of using the air cooling system as in Patent Document 1, since it is necessary to install a radiator to secure the air passage, there is a problem of increasing the size of the structure.
In addition, when the control unit is installed in a space that is difficult to ventilate, such as the back of the ceiling, there is a problem that the heat generated by the control unit cannot be effectively dissipated because the heat stays on the back of the ceiling, etc.

Method used

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  • Heat exchange unit and air conditioner
  • Heat exchange unit and air conditioner
  • Heat exchange unit and air conditioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0023] figure 1 It is a schematic diagram illustrating the configuration of the air conditioner according to Embodiment 1 of the present invention. like figure 1 As shown, the air conditioner 10 is composed of an outdoor unit 1 , a heat exchange unit 2 and an indoor unit 3 .

[0024] The outdoor unit 1 has a compressor 11 , a four-way valve 12 , a heat source side heat exchanger 13 , an accumulator 14 , and an outdoor control device 15 . The heat exchange unit 2 has a heat source side throttling device 21 , a heat exchanger between circuits 22 , a pump 23 , a radiator 24 and a control unit 25 . The indoor unit 3 has a load-side throttling device 31 , a load-side heat exchanger 32 , and an indoor control device 33 . In the indoor unit 3 , the load-side expansion device 31 and the load-side heat exchanger 32 are connected in series via a heat medium pipe 50 .

[0025] In addition, the air conditioner 10 has a refrigerant circuit 4 and a heat medium circuit 5 . The refrigera...

Embodiment approach 2

[0051] image 3 It is a schematic diagram illustrating the configuration of the air conditioner according to Embodiment 2 of the present invention. Figure 4 is concretely exemplified image 3 A block diagram of the control unit and its surrounding structure. based on image 3 and Figure 4 , the configuration of the air conditioner 110 according to Embodiment 2 will be described. The same reference numerals are used for the same components as those of the air conditioner 10 according to Embodiment 1 described above, and description thereof will be omitted.

[0052] The heat exchange unit 2A has a flow divider 26 and a bypass pipe 27 on the heat medium circuit 5 . The bypass pipe 27 is a pipe that connects the inlet side and the outlet side of the radiator 24 and bypasses the radiator 24 . That is, one end of the bypass pipe 27 is connected to the flow divider 26 , and the other end is connected to the heat medium pipe 50 between the radiator 24 and the inter-circuit hea...

Embodiment approach 3

[0068] Image 6 It is a schematic diagram illustrating the configuration of an air conditioner according to Embodiment 3 of the present invention. Figure 7 is an example of Image 6 A schematic diagram of the structure inside the control box. based on Image 6 and Figure 7 The configuration of the air conditioner 210 according to Embodiment 3 will be described. The same reference numerals are used for the same components as those of the air conditioner 10 in Embodiment 1 described above, and description thereof will be omitted.

[0069] like Image 6 As shown, for the air conditioner 210 , the pump 23 , the radiator 24 , the control unit 25 and the inverter power wiring 51 are arranged in a closed control box 201 . Furthermore, the heat exchange unit 2B has an in-tank heat exchanger 202 provided on the heat medium circuit 5B on the upstream side of the radiator 24 and on the downstream side of the load side heat exchanger 32 . In-tank heat exchanger 202 performs heat ...

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PUM

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Abstract

The air conditioner of the present invention has: a refrigerant circuit that connects a compressor, a heat source side heat exchanger, a heat source side expansion device, and an inter-circuit heat exchanger through refrigerant piping to circulate the refrigerant; and a heat medium circuit that It connects the pump, the inter-circuit heat exchanger, the load-side expansion device, and the load-side heat exchanger through heat medium piping, and the heat supply medium circulates. The air conditioner includes a radiator connected to a heat medium pipe, and a control unit attached to the radiator. The inter-circuit heat exchanger exchanges heat between the refrigerant circulating in the refrigerant circuit and the heat medium circulating in the heat medium circuit. The control unit is cooled by the heat medium flowing through the heat medium pipe via the radiator.

Description

technical field [0001] The present invention relates to a heat exchange unit and an air conditioner provided with a heat exchanger for exchanging heat between a refrigerant and a heat medium. Background technique [0002] Conventionally, a heat exchange unit and an air conditioner including the heat exchange unit have a control unit for driving a motor, and the control unit includes a semiconductor device including a switching element. Since the temperature of the control unit becomes high due to the operation of the switching element, etc., it needs to be cooled in order to suppress malfunctions and malfunctions, and an air cooling method is known as the cooling method (for example, refer to Patent Document 1). In the air conditioner of Patent Document 1, the control unit is bonded to the radiator, and the control unit is cooled by blowing air from the fan to the radiator. [0003] Patent Document 1: Japanese Patent Application Laid-Open No. 5-322224 [0004] However, in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F1/24F24F5/00F24F11/89F24F11/64
CPCF24F1/24F24F5/00F24H1/202F24F11/42F24F2140/20F24F1/00077F24F1/10F24F1/16F24F1/32F24F13/30F24F2221/34
Inventor 山中辰也高田茂生
Owner MITSUBISHI ELECTRIC CORP