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Heat pump cooling unit

A cooling device, heat pump technology, applied in the direction of cooling fluid circulation device, household refrigeration device, refrigerator, etc., to achieve the effect of preventing freezing

Inactive Publication Date: 2019-04-23
YANMAR POWER TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the above-mentioned configuration of Patent Document 1, the compressor 501 is driven without confirming the driving of the circulation pump 520.

Method used

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  • Heat pump cooling unit
  • Heat pump cooling unit
  • Heat pump cooling unit

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Embodiment Construction

[0025] Hereinafter, embodiments of the present invention will be described with reference to the drawings. figure 1 It is a block diagram showing a schematic configuration of a heat pump cooling device (hereinafter simply referred to as a cooling device) 100 according to this embodiment. The cooling device 100 generally includes: a refrigerant circuit 110 through which a refrigerant flows; and a circulating liquid circuit 200 through which a circulating liquid flows. In addition, the control device (control unit) 140 controls the overall operation of the cooling device 100 .

[0026] The refrigerant circuit 110 is configured to include a compressor 10 , a refrigerant-air heat exchanger 20 , an expansion valve 40 , and a refrigerant-circulating fluid heat exchanger 50 . The cooling device 100 performs a refrigeration cycle by circulating a refrigerant in the order of the compressor 10 , the refrigerant-air heat exchanger 20 , the expansion valve 40 , and the refrigerant-circu...

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Abstract

The heat pump cooling device (100) of the present invention has a refrigerant circuit (110) and a circulating liquid circuit (200), and the circulating liquid circuit (200) is provided with a circulating pump (300). When the cooling device (100) is started, after the power supply circuit of the circulating pump (300) is turned on, the control device (140) does not receive a specified signal (such as a flow switch) indicating that the circulating fluid circuit (200) is operating normally within a specified time. (411)), the power supply circuit of the circulation pump (300) is closed, and the starting of the compressor (10) of the refrigerant circuit (110) is stopped.

Description

technical field [0001] The present invention relates to a heat pump cooling device that cools a liquid to be cooled by exchanging heat with a refrigerant circulating in a refrigeration cycle. Background technique [0002] As a conventional heat pump cooling device, Patent Document 1 discloses a cooling device using a refrigerator for preventing freezing. Figure 5 composition shown. The cooling device of Patent Document 1 implements a refrigeration cycle by a compressor 501 , a condenser 502 , an expansion valve 503 , and an evaporator 504 , and cools a liquid to be cooled by exchanging heat with a refrigerant circulating in the cycle. In addition, the liquid to be cooled is circulated in a closed circuit between the evaporator (heat exchanger) 504 and the cold water tank 510 by the circulation pump 520 . [0003] In the cooling device of Patent Document 1, the liquid solenoid valve 505 is provided on the primary side of the expansion valve 503, and the temperature on the p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B1/00
CPCF25B49/025F25B2500/26F25B2600/0251F25B2600/13F25B2700/21171F25B2700/21172F25B2700/21173F25B2600/01F25B13/00F25B27/00F25B2313/003F25B2327/001Y02B30/70F25B47/006F25B49/022F25D29/00F25D31/002F25D2600/02F25D2700/10F25D2700/16
Inventor 金屋喜久堀部真矢大塚伸一
Owner YANMAR POWER TECHNOLOGY CO LTD