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Refrigeration cycle device

A refrigeration cycle and control device technology, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problem of difficulty in increasing the pressure of refrigerant flowing into the outdoor heat exchanger, inability to end defrosting as soon as possible, and difficulty in improving defrosting capacity And other issues

Active Publication Date: 2019-07-05
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In addition, in the above-mentioned conventional hot gas cycle, it is difficult to increase the pressure of the refrigerant flowing into the outdoor heat exchanger, so it is difficult to increase the defrosting capability by increasing the temperature and density of the refrigerant flowing into the outdoor heat exchanger.
[0013] Therefore, in the prior art described above, it is impossible to end the defrosting as early as possible.

Method used

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  • Refrigeration cycle device
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Examples

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Embodiment Construction

[0031] Embodiments will be described below based on the drawings. figure 1 The illustrated refrigeration cycle device 10 is suitable for use in a vehicle air conditioner. A vehicle air conditioner is an air conditioner that adjusts a vehicle interior space to an appropriate temperature. In the present embodiment, the refrigeration cycle device 10 is mounted on a hybrid vehicle that obtains driving force for vehicle running from an engine (in other words, an internal combustion engine) and a running electric motor.

[0032] The hybrid vehicle according to the present embodiment is configured as a plug-in hybrid vehicle capable of charging a battery mounted on the vehicle (ie, on-vehicle battery) with electric power supplied from an external power source (in other words, a commercial power source) while the vehicle is parked. As the battery, for example, a lithium ion battery can be used.

[0033] The driving force output from the engine is used not only for running the vehicl...

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Abstract

This refrigeration cycle device is provided with switching units (38, 39) which switch between: a state in which a heat medium in a first heat medium refrigerant heat exchanger and a heat medium in asecond heat medium refrigerant heat exchanger circulate independently of each other; and a state in which the heat media circulate between the first heat medium refrigerant heat exchanger and the second heat medium refrigerant heat exchanger. In this refrigeration cycle device, a control device (40) switches between: a first mode in which a first pressure reduction unit and a second pressure reduction unit operate so that a refrigerant absorbs heat in an outside air refrigerant heat exchanger and in which the switching unit operates so that the heat medium in the first heat medium refrigerantheat exchanger and the heat medium in the second heat medium refrigerant heat exchanger circulate independently of each other; and a second mode in which the first pressure reduction unit and the second pressure reduction unit operate so that the refrigerant radiates heat in the outside air refrigerant heat exchanger and in which the switching unit operates so that the heat medium circulates between the first heat medium refrigerant heat exchanger and the second heat medium refrigerant heat exchanger.

Description

[0001] Cross-references to related applications [0002] This application is based on the JP Patent application 2016-222348 for which it applied on November 15, 2016, The content of this indication is incorporated in this application by reference. technical field [0003] The present invention relates to a refrigeration cycle device that defrosts a heat exchanger when frost is formed on the heat exchanger. Background technique [0004] Conventionally, Patent Document 1 discloses a refrigeration cycle apparatus capable of switching between a heating mode and a defrosting mode. [0005] In the heating mode, a refrigeration cycle in which the refrigerant circulates in the order of compressor→condenser→first throttle valve→outdoor heat exchanger→accumulator→compressor is formed, and the condenser functions as a radiator. The outdoor heat exchanger functions as an evaporator. As a result, the refrigerant absorbs heat from the outside air in the outdoor heat exchanger and dissip...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B47/02B60H1/08B60H1/32F25B1/00
CPCB60H1/00899B60H2001/00928B60H2001/00961B60H1/32284B60H2001/00307B60H1/00278F25B25/005F25B5/04F25B2700/2104F25B2700/2106F25B2700/21171F25B49/02
Inventor 爱丽儿·马拉斯甘加藤吉毅三浦功嗣
Owner DENSO CORP