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Fluid injection ejector and ejector refrigeration cycle

A liquid ejector and refrigeration cycle technology, applied in the direction of fluid circulation arrangements, jet pumps, refrigerators, etc., can solve the problems of condensation delay and inability to fully suppress energy loss, so as to reduce power consumption, improve ejector efficiency, and improve The effect of grade factor

Active Publication Date: 2017-04-26
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] We believe that the reason is that if the mixed refrigerant is not in an ideal mixed state, the condensation of a part of the gas-phase refrigerant in the larger particles will be delayed, and the energy loss cannot be sufficiently suppressed.

Method used

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  • Fluid injection ejector and ejector refrigeration cycle
  • Fluid injection ejector and ejector refrigeration cycle
  • Fluid injection ejector and ejector refrigeration cycle

Examples

Experimental program
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no. 1 approach

[0065] use Figure 1 to Figure 5 A first embodiment of the present invention will be described. In the present embodiment, an ejector refrigeration cycle 10 that is a vapor compression refrigeration cycle apparatus having a liquid ejector 12 is applied to a vehicle air conditioner. More specifically, the ejector refrigeration cycle 10 realizes the function of cooling the blown air blown into the vehicle interior as a space to be air-conditioned.

[0066] In addition, in the ejector refrigeration cycle 10, an HFC-based refrigerant (specifically, R134a) is used as a refrigerant, and a subcritical refrigeration cycle of a vapor compression type is formed in which the pressure of the refrigerant on the high-pressure side does not exceed the critical pressure of the refrigerant. . In addition, refrigerating machine oil for lubricating the compressor 11 is mixed in the refrigerant, and part of the refrigerating machine oil circulates in the cycle together with the refrigerant.

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no. 2 approach

[0116] In this embodiment, for the first embodiment like Image 6 The ejector type refrigeration cycle 10a to which a high-pressure side liquid pump 18, a high-pressure side evaporator 19, a high-pressure side ejector 20, etc. are added as shown in the overall configuration diagram of FIG.

[0117] More specifically, compared to the first embodiment, another liquid-phase refrigerant outlet is provided in the liquid receiver 14 of the ejector refrigeration cycle 10a of this embodiment. That is, a total of three liquid-phase refrigerant outlets are provided in the liquid receiver 14 of the present embodiment. And, the other liquid-phase refrigerant outlet is connected to the suction side of the high-pressure side liquid pump 18 .

[0118] The high-pressure side liquid pump 18 is a high-pressure-side pressure-feeding device that pressure-feeds the liquid-phase refrigerant flowing out of the liquid receiver 14 to the refrigerant inlet side of the high-pressure-side evaporator 19 ...

no. 3 approach

[0142] In this embodiment, for the first embodiment like Figure 8 The ejector-type refrigeration cycle 10b to which the low-pressure side ejector 21, the gas-liquid separator 22, the fixed throttle 23, etc. are added as shown in the overall configuration diagram will be described.

[0143] More specifically, the other refrigerant outlet port of the liquid receiver 14 of the ejector refrigeration cycle 10b is connected to the inlet side of the low-pressure side nozzle portion 21a of the low-pressure side ejector 21 . The low-pressure side ejector 21 is a refrigerant cycle device (refrigerant delivery device) that depressurizes the liquid-phase refrigerant flowing out of the liquid receiver 14 into a gas-liquid two-phase state and injects it, and injects it with the help of low-pressure refrigerant injected at a high speed. The suction effect of the side injection refrigerant draws (delivers) the low-pressure side evaporator 17 to flow out the refrigerant and circulate it in th...

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Abstract

Refrigerant flowing out from a fluid injection ejector (12) dissipates heat in a radiator (13), and liquid phase refrigerant that has dissipated heat in the radiator (13) is caused to flow into an injection refrigerant channel (122a) of the fluid injection ejector (12). Moreover, discharged refrigerant from a compressor (11) that takes in refrigerant flowing out from a low pressure-side evaporator (17) is caused to flow into an inflow refrigerant channel (121a) of the fluid injection ejector (12). Furthermore, an ejector in which injection refrigerant to be injected from the injection refrigerant channel (122a) into a gas-liquid mixing portion (122d) is injected to the outer peripheral side of inflow refrigerant flowing from the inflow refrigerant channel (121a) into the gas-liquid mixing portion (122d) is used as the fluid injection ejector (12). Thus, the ejector efficiency of the fluid injection ejector can be sufficiently improved.

Description

[0001] Cross-reference of related applications [0002] This application is based on the Japanese patent application 2014-179773 for which it applied on September 4, 2014, and the Japanese patent application 2015-031458 for which it applied on February 20, 2015, The indication of this is incorporated in this application by reference. technical field [0003] The invention relates to a liquid ejector and an ejector refrigeration cycle having a liquid ejector. Background technique [0004] Conventionally, an ejector type refrigeration cycle is known as a vapor compression type refrigeration cycle device having an ejector. In addition, as an ejector applied to an ejector refrigeration cycle, for example, Patent Document 1 discloses an ejector in which a gas-liquid two-phase injection refrigerant injected from a nozzle part is combined with a gas-liquid two-phase refrigerant sucked from a refrigerant suction port. The suction refrigerant in the gas phase is mixed, and the mixed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B1/00F04F5/10F04F5/44F04F5/46F04F5/54F25B5/02F25B43/00
CPCF04F5/46F04F5/54F04F5/04F04F5/24F25B41/00F25B2341/0012F25B2341/0015B60H1/3223B60H1/323B60H2001/3289B60H2001/3298F04F5/36
Inventor 西嶋春幸尾形豪太高野义昭
Owner DENSO CORP