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Air conditioner

A technology for air conditioners and compressors, which is applied in air conditioning systems, refrigerators, compressors, etc., to achieve both refrigeration performance and heating performance, increase refrigerant flow rate, and miniaturization

Active Publication Date: 2021-08-17
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the air conditioner disclosed in Patent Document 1, there is a problem that it is difficult to reduce the size of the air conditioner while maintaining the cooling performance.

Method used

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Experimental program
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Embodiment approach 1

[0020] Air conditioner 100 according to Embodiment 1 of the present invention will be described. figure 1 It is a schematic refrigerant circuit diagram showing an example of the refrigerant circuit 10 during cooling operation of the air conditioner 100 according to the first embodiment. figure 1 The black arrows in indicate the flow direction of the refrigerant during the cooling operation. in addition, figure 1 The hollow frame-shaped arrows in indicate the flow direction of the air flow.

[0021] Additionally, when including figure 1 In the following drawings, the dimensional relationship and shape of each component may be different from the actual situation. In addition, in the following drawings, the same code|symbol is attached|subjected to the same or similar component.

[0022] The air conditioner 100 includes a refrigerant circuit 10 including a compressor 1 , a refrigerant flow switching device 2 , a heat source side heat exchanger 3 , a pressure reducing device 4...

Embodiment approach 2

[0075] use Figure 5 The configuration of the air conditioner 100 according to Embodiment 2 of the present invention will be described. Figure 5 It is a schematic refrigerant circuit diagram showing an example of the refrigerant circuit 10 during cooling operation of the air conditioner 100 according to the second embodiment. Figure 5 The black arrows in indicate the flow direction of the refrigerant during the cooling operation. in addition, Figure 5 The hollow frame-shaped arrows in indicate the flow direction of the air flow.

[0076] Such as Figure 5 As shown, in the air conditioner 100 according to Embodiment 2, the bypass valve 70 is configured to include a capillary 70 b in addition to the check valve 70 a. The rest of the configuration of the air conditioner 100 is the same as that of the first embodiment described above, and therefore description thereof will be omitted.

[0077] The capillary 70b is made of a long and thin copper tube, and is an expansion va...

Embodiment approach 3

[0081] use Figure 6 The configuration of the air conditioner 100 according to Embodiment 3 of the present invention will be described. Figure 6 It is a schematic refrigerant circuit diagram showing an example of the refrigerant circuit 10 in the cooling operation of the air conditioner 100 according to the third embodiment. Figure 6 The black arrows in indicate the flow direction of the refrigerant during the cooling operation. in addition, Figure 6 The hollow frame-shaped arrows in indicate the flow direction of the air flow.

[0082] Such as Figure 6 As shown, in the air conditioner 100 according to Embodiment 3, the bypass valve 70 is configured as a flow rate adjustment valve 70c having a freely adjustable opening degree. Moreover, the air conditioner 100 has the control part 80 which can control the opening degree of the flow rate adjustment valve 70c via the communication line 75. As shown in FIG. In addition, the air conditioner 100 is configured to have one o...

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Abstract

An air conditioner comprises: a load-side heat exchanger that comprises a first heat exchanger and a second heat exchanger; a first refrigerant pipe that connects a pressure reducing device and the first heat exchanger; a connection pipe that connects the first heat exchanger and the second heat exchanger; a bypass pipe that is connected to the connection pipe of the load-side heat exchanger; and a bypass valve that is disposed in the bypass pipe. The first heat exchanger is disposed on the windward side of the second heat exchanger in the airflow generated by a blower device, and the airflow passing through the first heat exchanger passes through the second heat exchanger. The bypass valve causes some of the refrigerant flowing in the first refrigerant pipe to flow to the connection pipe via the bypass pipe during cooling operation and causes all of the refrigerant flowing in the connection pipe to flow from the connection pipe to the first heat exchanger by blocking the flow of refrigerant from the connection pipe toward the first refrigerant pipe via the bypass pipe during heating operation.

Description

technical field [0001] The present invention relates to an air conditioner having a plurality of heat exchangers on the load side. Background technique [0002] As a conventional air conditioner having a plurality of heat exchangers on the load side, for example, Patent Document 1 discloses a cooling operation in which the load-side heat exchanger functions as an evaporator and a cooling operation in which the load-side heat exchanger An air conditioner for heating operation that functions as a condenser. The air conditioner of Patent Document 1 has an upper-stage heat exchanger and a lower-stage heat exchanger as load-side heat exchangers. In Patent Document 1, the upper-stage heat exchanger and the lower-stage heat exchanger are connected in parallel during cooling operation to increase the number of refrigerant passages connecting the inlets and outlets of the load-side heat exchanger, thereby suppressing the flow caused by the refrigerant. Reduced evaporation performan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B5/00F24F1/0063F24F13/30F25B41/20
CPCF24F1/0063F24F1/0067F25B13/00F25B41/42F25B41/20F25B49/02F25B2600/2501F25B2600/2513F25B5/02F25B5/04F25B6/04F25B2313/0314F25B2313/0315F25B2700/2106F25B5/00F25B2400/0409F25B2600/2507F25B2700/2103
Inventor 坂部昭宪佐藤正典中川直纪川岛惇
Owner MITSUBISHI ELECTRIC CORP
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