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Refrigeration cycle device

A refrigeration cycle and refrigerant technology, used in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve problems such as the inability to change the number of tubes and the inability to optimize the refrigerant flow of outdoor heat exchangers.

Active Publication Date: 2021-03-23
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, according to the study of the inventors of the present application, in the outdoor heat exchanger described in the above-mentioned Patent Document 1, the outdoor heat exchanger in the heating operation (when the outdoor heat exchanger is made to function as an evaporator) and the cooling operation (When making the outdoor heat exchanger function as a condenser), the number of tubes in each refrigerant passage cannot be changed
Therefore, in each operation, the refrigerant flow in the outdoor heat exchanger cannot be optimized in detail.

Method used

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no. 1 approach

[0022] use Figure 1 ~ Figure 3 A first embodiment of the present invention will be described. In the present embodiment, the vapor compression refrigeration cycle device 10 of the present invention is applied to the vehicle air conditioner 1 . In the vehicle air conditioner 1 , the refrigeration cycle device 10 plays a role of heating or cooling the blown air blown into the vehicle interior which is a space to be air-conditioned.

[0023] The refrigeration cycle device 10 includes a compressor 11 , an indoor condenser 12 , a fixed throttle valve 13 for heating, an outdoor heat exchanger 14 , and a fixed throttle valve 19 for cooling. In addition, the refrigeration cycle device 10 can switch the refrigerant flow path to perform a heating operation and a cooling operation. The heating operation is to heat the blown air to heat the vehicle interior, and the cooling operation is to cool the blown air to cool the vehicle. Indoor cooling operation. In addition, in figure 1 as w...

no. 2 approach

[0126] In this embodiment, only the parts different from the first embodiment described above will be described. Such as Figure 4 As shown, in the refrigeration cycle apparatus 10 of this embodiment, the fixed throttle valve 13 for heating, the first three-way valve 15a, the second three-way valve 15b, and the check valve 16 are integrally configured as the valve assembly 5 .

[0127] The valve assembly 5 includes a housing 51 integrally formed with a refrigerant passage 52 through which refrigerant flows, a heating fixed throttle valve 13 , a first three-way valve 15 a , a second three-way valve 15 b , and a check valve 16 . The housing 51 is formed into a predetermined shape by, for example, die-casting of an aluminum alloy or an aluminum alloy-based casting.

[0128] The first three-way valve 15 a has a plate-shaped first valve element 53 that opens and closes the inlet 151 and the outlet 152 . In the housing 51, the first spool 53 can move along the axial direction of the...

no. 3 approach

[0139] In this embodiment, only the parts different from the second embodiment described above will be described. Such as Image 6 As shown, in the refrigeration cycle apparatus 10 of this embodiment, the valve assembly 5 is integrally formed with the outdoor heat exchanger 14 .

[0140] The valve assembly 5 is integrally formed with the first tank portion 42 of the outdoor heat exchanger 14 . At this time, the refrigerant inflow portion 141 , the refrigerant outflow and inflow portion 142 , and the refrigerant outflow portion 143 of the first tank portion 42 communicate with the refrigerant passage 52 of the valve assembly 5 , respectively.

[0141] As described above, in the refrigeration cycle apparatus 10 of the present embodiment, the valve assembly 5, that is, the first three-way valve 15a, the second three-way valve 15b, the fixed throttle valve 13 for heating, and the outdoor heat exchanger 14 are configured. as one. Thereby, the mountability at the time of mounting...

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Abstract

In the refrigeration cycle device of the present invention, the outdoor heat exchanger (14) includes a core (41) formed by stacking a plurality of tubes (44). The core (41) has a first core (411), a second core (412) and a third core (413), and the first core, the second core and the third core are respectively composed of multiple A part of the tube group in each tube (44) constitutes. The flow direction of the refrigerant flowing through the second core (412) is reversed during the heating operation and the cooling operation. The flow direction of the refrigerant flowing through the first core (411) and the third core (413) respectively is the same direction during heating operation and cooling operation. Therefore, it is possible to appropriately adjust the heat exchange efficiency of the outdoor heat exchanger during both the heating operation and the cooling operation.

Description

[0001] Cross-reference of related applications [0002] This application is based on Japanese Patent Application No. 2016-122860 filed on June 21, 2016, the disclosure of which is incorporated herein by reference. technical field [0003] The present invention relates to a refrigeration cycle device including an outdoor heat exchanger for exchanging heat between refrigerant and external air. Background technique [0004] Conventionally, as an outdoor heat exchanger of a refrigeration cycle device, for example, Patent Document 1 discloses an outdoor heat exchanger that functions as an evaporator during a heating operation and functions as a condenser (radiator) during a cooling operation. )Play a role. [0005] In the outdoor heat exchanger described in this patent document 1, a plurality of partitions are provided inside the head tank, and a check valve is combined at a predetermined position in the plurality of partitions. The refrigerant flow direction releases the cut-o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B39/00B60H1/32F24F1/14F25B41/20F28F9/02
CPCF25B39/00F28F9/02F24F1/14B60H1/00335B60H1/00921F25B41/20B60H1/32B60H1/00485B60H1/00885B60H1/00907
Inventor 川久保昌章
Owner DENSO CORP