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Ejector type refrigerating cycle device

A refrigerant cycle and refrigerant technology, which is applied in refrigerators, refrigeration and liquefaction, lighting and heating equipment, etc., can solve the problem that the second evaporator cannot provide sufficient refrigeration capacity, etc.

Inactive Publication Date: 2009-09-23
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the refrigerant cycle is operated in such a state, the second evaporator cannot provide sufficient cooling capacity

Method used

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  • Ejector type refrigerating cycle device
  • Ejector type refrigerating cycle device
  • Ejector type refrigerating cycle device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0051] (first embodiment)

[0052] refer to figure 1 with figure 2 , the first embodiment of the present invention will be described below. figure 1 An overall configuration diagram of an example is shown in which the ejector refrigerant cycle apparatus of the first embodiment is applied to a refrigeration apparatus of a vehicle. The refrigerating apparatus for a vehicle of this embodiment is for cooling a refrigerating room to a very low temperature, for example, about -20°C.

[0053] First, in the ejector refrigerant cycle apparatus 10, the compressor 11 sucks, compresses, and discharges refrigerant, and has a driving force transmitted thereto from a vehicle running engine (not shown) via a pulley and a belt, so that it can be driven in rotation. Furthermore, in this embodiment, a known swash plate type variable displacement compressor is used as the compressor 11, which can variably and continuously control the discharge volume by a control signal from the outside. ...

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PUM

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Abstract

An ejector refrigerant cycle device, comprising: a radiator for dissipating the heat of high-temperature and high-pressure refrigerant discharged from a compressor; a branch part for dividing the refrigerant on the downstream side of the radiator into The first stream and the second stream; an ejector including a nozzle portion for decompressing and expanding the refrigerant of the first stream from the branch portion; a decompression portion for decompressing the refrigerant from the branch portion. and an evaporator for evaporating the refrigerant at the downstream side of the decompression portion. The evaporator has a refrigerant outlet coupled to the refrigerant suction of the ejector. In addition, a refrigerant radiating portion is provided for dissipating heat of the refrigerant when the decompression portion decompresses and expands the refrigerant. For example, the refrigerant heat dissipation part is provided in the internal heat exchanger.

Description

technical field [0001] The invention relates to an ejector refrigerant cycle device with an ejector. Background technique [0002] JP-A-2005-308380 (corresponding to US 2005 / 0268644 A1) discloses an ejector refrigerant cycle device. In this ejector refrigerant cycle apparatus, the refrigerant flow is split into two streams at the branch portion on the downstream side of the radiator and on the upstream side of the nozzle portion of the ejector, one of which flows to the nozzle portion, and The other flows to the refrigerant suction of the ejector. [0003] In the ejector refrigerant cycle apparatus of this document, the first evaporator is placed on the downstream side of the diffuser portion of the ejector. Between the branch portion of the ejector and the refrigerant suction port, a throttling mechanism serving as a decompression device for decompressing the refrigerant is provided, and a second evaporator is provided. The evaporator is used to evaporate the decompresse...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B1/00
Inventor 池上真武内裕嗣山田悦久西岛春幸松井秀也
Owner DENSO CORP