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Heat pump and compressor discharge pressure controlling apparatus for the same

A technology of discharge pressure and control device, applied in the field of compressor discharge pressure control device of heat pump, can solve the problems of compressor damage, reduced heat pump performance, high compressor discharge pressure and temperature

Inactive Publication Date: 2007-07-25
DAEWOO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the compression efficiency of the compressor is reduced which reduces the performance of the heat pump
[0010] In traditional heat pumps, when overloaded, the compressor discharge pressure and temperature are too high, causing the compressor to be damaged

Method used

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  • Heat pump and compressor discharge pressure controlling apparatus for the same
  • Heat pump and compressor discharge pressure controlling apparatus for the same
  • Heat pump and compressor discharge pressure controlling apparatus for the same

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Embodiment Construction

[0030] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0031] Fig. 2 shows a schematic structural diagram of a heat pump according to a first preferred embodiment of the present invention.

[0032] As shown in FIG. 2, the heat pump according to the first preferred embodiment of the present invention includes a compressor 10, an indoor heat exchanger 20, an expansion valve 30, an outdoor heat exchanger 40, an accumulator 50, a four-way valve 60 and a plurality of connecting pipes.

[0033] The four-way valve 60 is connected to the outlet of the compressor 10 via the first connecting pipe 1 . The four-way valve 60 is also connected to the indoor heat exchanger 20 via the second connecting pipe 2 . The indoor heat exchanger 20 is connected to the outdoor heat exchanger 40 via the third connection pipe 3 .

[0034] An expansion valve 30 for controlling the flow of refrigerant and a check valve 31 for p...

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Abstract

Disclosed herein is a heat pump and compressor discharge pressure controlling apparatus for the same. The heat pump comprises a compressor, indoor and outdoor heat exchangers for condensing or evaporating refrigerant compressed by the compressor according to cooling or heating operation mode, a four-way valve for guiding the flow of the compressed refrigerant to the indoor heat exchanger or the outdoor heat exchanger according to the operation mode, an expansion valve for selectively decreasing the pressure of liquid refrigerant according to the operation mode, a check valve selectively opened or closed according to the operation mode for guiding the flow of the liquid refrigerant to the expansion valve, an accumulator for preventing the liquid refrigerant from entering into the inlet of the compressor, connection pipes, and a heat exchange part for performing heat exchange between the connection pipe connected to the inlet of the accumulator and the connection pipe connected to the indoor heat exchanger.

Description

[0001] This application is a divisional application of Chinese Patent Application No. 200510066034.1. The filing date of the patent application No. 200510066034.1 is April 22, 2005. The title of the invention is "Heat Pump and Heat Pump Compressor Discharge Pressure Control Device". technical field [0002] The present invention relates to heat pumps and in particular to such a heat pump having an accumulator inlet side conduit extending through the discharge pipe of the compressor to prevent compression due to the flow of low temperature, low pressure liquid refrigerant into the compressor via an outdoor heat exchanger The heat pump is damaged, thus preventing liquid refrigerant from entering the accumulator and the compressor. When the outdoor air temperature is low or overloaded, the heat pump maintains the compressor discharge pressure at a predetermined pressure level, thereby stabilizing the compressor suction pressure. Moreover, When the outdoor temperature drops in wint...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B30/02F25B49/02F25B30/00
CPCB29C53/58B29C53/8016B29C70/22B29D23/001F16L9/02
Inventor 金英洙
Owner DAEWOO ELECTRONICS CO LTD
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