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Refrigeration cycle device

A refrigeration cycle and refrigerant technology, applied in the direction of refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of many technical issues, high cost, low performance, etc., and achieve the effect of inhibiting disproportionation reaction

Active Publication Date: 2016-11-09
MITSUBISHI ELECTRIC CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this refrigerant is a refrigerant with a high boiling point and a refrigerant with low performance.
In order to maintain the same performance as in the past, there are many technical issues and there is a possibility of cost increase

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0028] First, the configuration of the refrigeration cycle apparatus will be described.

[0029] figure 1 It is a schematic structural diagram of the refrigeration cycle apparatus concerning Embodiment 1.

[0030] Such as figure 1 As shown, the refrigeration cycle device according to the first embodiment uses the refrigerant piping as the main path 8 to sequentially connect the compressor 1 , the first condenser 2 , the gas-liquid separator 3 , the second condenser 4 , and heat exchange between the refrigerants. The device 5, the first expansion valve 6 and the evaporator 7 form a refrigeration cycle. The gas-side outlet 3 a provided on the upper portion of the gas-liquid separator 3 is connected to the second condenser 4 .

[0031] A liquid-side outlet 3 b provided at a lower portion of the gas-liquid separator 3 is connected to the compressor 1 through a bypass path 9 . The bypass path 9 is connected to an intermediate pressure portion (intermediate pressure=intermediate...

Embodiment approach 2

[0063] First, the configuration of the refrigeration cycle apparatus will be described.

[0064] Since the working refrigerant of the refrigeration cycle apparatus according to the second embodiment is the same as that of the first embodiment, the structural differences will be described.

[0065] image 3 It is a schematic structural diagram of the refrigeration cycle apparatus concerning Embodiment 2.

[0066] Such as image 3 As shown, the refrigeration cycle device involved in Embodiment 2 is sequentially connected with a compressor 11, an oil separator 12, a four-way valve 13, an outdoor heat exchanger 14, an outdoor expansion valve 15, an indoor expansion valve 16, an indoor heat exchanger 17, The four-way valve 13 and the accumulator 18 form a refrigeration cycle. A plurality of indoor expansion valves 16 and indoor heat exchangers 17 are connected in parallel, and the gas-side outlet 12 a of the oil separator 12 is connected to the four-way valve 13 . Furthermore, ...

Embodiment approach 3

[0094] First, the configuration of the refrigeration cycle apparatus will be described.

[0095] Since the working refrigerant of the refrigeration cycle apparatus according to the third embodiment is the same as that of the first embodiment, the structural differences will be described.

[0096] Figure 4 It is a schematic structural diagram of the refrigeration cycle apparatus concerning Embodiment 3.

[0097] Such as Figure 4 As shown, the cold cycle device related to Embodiment 3 uses refrigerant piping to sequentially connect the compressor 30, the four-way valve 31, the use-side heat exchanger 32, the subcooler 33, the expansion valve 34 as the first decompression device, and the The heat source side heat exchanger 35 is configured and accommodated in the refrigeration cycle unit 100 .

[0098] And, the composition separation circuit is composed of a refrigerant rectifier 40 as a composition separation mechanism, a refrigerant storage 41 for storing refrigerant, a fi...

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Abstract

The objective is to provide a safe, high-performance refrigeration cycle device with which it is possible to avoid a condition wherein the refrigerant causes a chain reaction, even when a refrigerant that generates a disproportionation reaction is used in the refrigeration cycle device. This refrigeration cycle device is equipped with: a main circuit wherein a compressor, a first heat exchanger, an expansion valve, and a second heat exchanger are sequentially connected, and in which a non-azeotropic mixed refrigerant (which includes at least a first refrigerant and a second refrigerant characterized by having a higher boiling point than the first refrigerant under the same pressure) operates as a standard composition refrigerant; and a composition separation circuit connected to the main circuit. The first refrigerant has the property of producing a disproportionation reaction, and the composition separation circuit is configured such that when operating in a separation / storage mode wherein the composition of the standard composition refrigerant is separated, a mixed refrigerant for which the composition ratio of the first refrigerant is higher than the standard composition refrigerant is separated from the main circuit, and is stored.

Description

technical field [0001] The present invention relates to a refrigeration cycle device using a non-azeotropic mixed refrigerant as a working refrigerant. Background technique [0002] In recent years, in order to suppress the influence of the global warming effect, low-GWP refrigerants are being developed. Conventionally used R410A is a refrigerant with excellent performance, but its GWP (Global Warming Potential) is about 2000, so R32 whose GWP is about 1 / 3 of R410A is gradually being used. R32 is a refrigerant with similar physical properties and excellent performance to R410A, with a GWP of about 600. In order to further reduce the GWP, tetrafluoropropylene-based (HFO-based) refrigerants such as HFO1234yf have been developed. However, this refrigerant is a refrigerant with a high boiling point and a refrigerant with low performance. In order to maintain the same performance as in the past, there are many technical issues and there is a possibility that the cost will incre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B1/00F25B6/04
CPCF25B6/04F25B13/00F25B2400/05F25B2400/121F25B2400/13F25B2400/23F25B43/00F25B41/34F25B41/24Y02B30/70F25B41/385F25B31/004F25B43/006F25B2600/2513
Inventor 岛津裕辅
Owner MITSUBISHI ELECTRIC CORP
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