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Refrigeration cycle apparatus

A refrigeration cycle and equipment technology, applied in the field of refrigeration cycle equipment, can solve problems such as difficulty in removing carbonic acid

Inactive Publication Date: 2003-03-19
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] This is because water and carbon dioxide are first adsorbed by the desiccant, therefore, it is difficult to remove the carbonic acid

Method used

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  • Refrigeration cycle apparatus
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  • Refrigeration cycle apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0104] figure 1 It is a block diagram of the refrigeration cycle equipment according to the first embodiment of the present invention. The equipment is constructed by connecting pipes, a compressor 1, a cooler 2, an expansion device 4, and an evaporator 3, wherein the expansion device 4 can be It is a capillary tube or expansion valve.

[0105] This refrigeration cycle equipment is constructed by charging a refrigerant with carbon dioxide as a working medium in the equipment, and if necessary, a refrigerating oil may be filled in the equipment to constitute the refrigeration cycle equipment. In order to remove the carbonic acid generated by introducing water into the working medium in the refrigeration cycle, a container 5 containing carbonic acid trapping agent for filling the carbonic acid trapping agent is connected to the refrigeration cycle through a pipe, so that the cooling cycle can be ensured. Reliability of cold cycle.

[0106] Next, the flow of the carbon dioxide refr...

Embodiment 2

[0112] figure 2 It is a block diagram of the refrigeration cycle equipment according to Embodiment 2 of the present invention. Its refrigeration cycle is achieved by combining an outdoor unit 17 with a compressor 11, a heat exchanger 12a, an expansion device 13 and connecting these components. The indoor unit 18 is connected to the pipe of an indoor unit 18, where the expansion device 13 can be a capillary tube or an expansion valve, and the indoor unit has a heat exchanger 12b, which is installed in a place where air conditioning is required.

[0113] due to figure 2 The outdoor unit 17 in has a flow path switching device 15 such as a four-way valve, so the heat exchangers 12a, 12b can alternately function as coolers or evaporators.

[0114] In order to remove the carbonic acid generated by the introduction of water, a container 14 containing a carbonic acid trapping agent is placed at the low-temperature side pipe 16 between the flow path switching device 15 and the suction s...

Embodiment 3

[0121] image 3 It is a block diagram of a refrigeration cycle equipment according to Embodiment 3 of the present invention, which is connected by pipes, a compressor 21, a cooler 22, an expansion device 24 such as a capillary tube or an expansion valve, and an evaporator 23 And constituted. In order to increase efficiency by lowering the temperature upstream of the expansion device 24, the refrigeration cycle equipment is provided with an internal heat exchanger 26 for heat exchange between the high pressure side and the low pressure side of the cycle.

[0122] The flow of carbon dioxide refrigerant in the refrigeration equipment forms a low-temperature cycle. In this way, the refrigerant compressed into a supercritical state by the compressor 21 generates heat at the cooler 22, and the refrigerant passes through the internal heat exchanger 26. The cooled, and then cooled refrigerant flows through the expansion device 24. The subsequent cycle is formed so that the refrigerant und...

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Abstract

To provide a refrigerating cycle apparatus which uses carbon dioxide as a working medium, in which a problem associated with reliability arisen from introduction of water into a refrigeration cycle has been solved. <??>Carbonic acid produced by a reaction of carbon dioxide or a mixed refrigerant including carbon dioxide and water is efficiently removed by providing a flow channel of the refrigeration cycle with a carbonic acid trapping agent, and consequently, the refrigerating cycle apparatus with high reliability which can prevent deterioration of a carbon dioxide refrigerant, decomposition of a refrigeration oil, corrosion of metal components or the like is constructed.

Description

Technical field [0001] The present invention relates to a refrigeration cycle equipment that uses carbon dioxide as a refrigerant. It can be used in air conditioners, car air conditioners, refrigerators (refrigerators), display boxes, freezers or cold storage, heat pump heat Water supply, etc. Background technique [0002] In refrigeration cycle equipment including a compressor, a cooler, an expansion device, an evaporator, and other main components, hydrocarbons containing fluorine atoms are traditionally used as refrigerants. [0003] Specifically, for many years, hydrocarbons containing chloride ions and fluorine ions have been used in non-flammable and highly efficient refrigerators, but obviously, because the refrigerant contains chloride ions, when such as CFC (chlorofluorocarbon) Or when some refrigerants such as HCFC (chlorohydrocarbon fluorocarbon) are released into the atmosphere and pass through the stratosphere, these refrigerants will cause the ozone layer to decreas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B1/00B01D53/14B01J20/04B01J20/18B01J20/26B01J20/32C09K5/04F25B9/00F25B43/00
CPCB01J20/04B01J20/186B01J20/26B01J20/32B01J20/3204B01J20/043F25B2309/061B01J20/18B01J20/041Y02C10/08F25B9/008C09K5/041F25B43/00F25B9/006B01J20/3242F25B9/002B01J20/261B01J20/3259B01J20/2808Y02C20/40
Inventor 铃木正明吉田雄二西胁文俊船仓正三冈座典穗
Owner PANASONIC CORP