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Steam compression type refrigeration cycle device

A refrigeration cycle and vapor compression technology, applied in gas cycle refrigerators, refrigerators, compressors, etc., can solve problems such as no public structure, and achieve the effects of preventing frosting and improving temperature efficiency

Inactive Publication Date: 2009-07-01
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, there is no disclosure at all about the specific structures of the two evaporators 115, 118 when the two evaporators 115, 118 perform indoor cooling, and the frosting control of the vapor compression refrigeration cycle apparatus using the ejector. structure

Method used

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  • Steam compression type refrigeration cycle device
  • Steam compression type refrigeration cycle device
  • Steam compression type refrigeration cycle device

Examples

Experimental program
Comparison scheme
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no. 1 approach

[0054] use Figure 1 to Figure 9 , the present embodiment will be described. The vapor compression refrigeration cycle device of the present embodiment is a vapor compression refrigeration cycle device including a plurality of evaporators, and as an example thereof, a refrigeration cycle device using an ejector will be described as an example. In addition, a supercritical refrigeration cycle in which carbon dioxide is used as a refrigerant and the high-pressure pressure exceeds the critical pressure will be described. Also, in a supercritical refrigeration cycle using an ejector, the refrigerant only dissipates heat in a supercritical state without condensing. In this case, since it is a subcritical cycle in which the high pressure does not exceed the critical pressure, the radiator functions as a condenser.

[0055] Such as figure 1 As shown, the vapor compression refrigeration cycle device 10 of the present embodiment includes: a compressor 1 that sucks and pressurizes r...

no. 2 approach

[0095] In this embodiment, as another example of the vapor compression refrigeration cycle device of the present invention, Figure 10 The illustrated vapor compression refrigeration cycle device 20 will be described. In addition, in Figure 10 Among the constituent elements, it is the same as that already described in the first embodiment figure 1 Components with the same reference numerals are the same, and descriptions thereof are the same as those in the first embodiment, and are omitted here.

[0096] This vapor compression refrigeration cycle device 20 has a structure in which a gas-liquid separator 21 for separating the gas-liquid of the refrigerant is provided on the downstream side of the refrigerant flow of the first evaporator 5, and the gas-liquid separator 21 is connected to the suction side of the compressor 1. The gas-phase refrigerant outlet of the gas-liquid separator 21 is connected to the refrigerant suction port 4 b of the ejector 4 via the refrigerant p...

no. 3 approach

[0102] In this embodiment, as another example of the vapor compression refrigeration cycle device of the present invention, Figure 11 The illustrated vapor compression refrigeration cycle device 30 will be described. In addition, in Figure 11 Among the constituent elements, it is the same as that already described in the first embodiment figure 1 Components with the same reference numerals are the same, and descriptions thereof are the same as those in the first embodiment, and are omitted here.

[0103] This vapor compression refrigeration cycle device 30 has a structure in which a gas-liquid separator 31 for separating the gas-liquid of the refrigerant is provided on the downstream side of the refrigerant flow of the first evaporator 5 , and the gas-liquid separator 31 is connected to the first evaporator 5 . The inlet of the liquid separator 31 and the suction side of the compressor 1 are connected to the outlet of the gas-phase refrigerant of the gas-liquid separator ...

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Abstract

It is equipped with: a compressor that pressure-feeds the refrigerant; a radiator that radiates heat from the high-pressure refrigerant from the compressor; an ejector that is installed on the downstream side of the radiator; and a first evaporator that is downstream of the ejector. and the second evaporator, which flows into the refrigerant whose flow rate is regulated by the expansion valve provided downstream of the radiator, and is connected to the refrigerant suction port of the ejector, The first evaporator and the second evaporator have inside them refrigerant passages through which refrigerant flows, and the refrigerant passages are arranged in parallel so as to form a plurality of rows along the airflow direction (A) flowing outside of the first evaporators.

Description

technical field [0001] The present invention relates to a vapor compression refrigeration cycle device suitable for use as an air conditioner for automobiles, commercial use, or household use. Background technique [0002] Conventionally, as such a vapor compression refrigeration cycle apparatus, for example, a vapor compression refrigeration cycle apparatus using an ejector is known, which includes a first evaporator disposed on the refrigerant downstream side of the ejector and between the gas between the liquid separators; and a second evaporator disposed between the liquid refrigerant outlet side of the gas-liquid separator and the refrigerant suction port of the ejector (for example, refer to Patent Document 1). [0003] [Patent Document 1] Patent No. 3322263 [0004] However, in the vapor compression refrigeration cycle device described in Patent Document 1, although it is disclosed that two evaporators, a so-called first evaporator and a second evaporator, are used t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B1/00
CPCF25B5/02F25B2309/061F25B2341/0011B60H2001/3298
Inventor 藤泽祥孝今津正琢武内裕嗣长谷川敦
Owner DENSO CORP