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Refrigeration cycle device

A refrigeration cycle and refrigerant technology, which is used in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problem of difficult setting of filters, and achieve the effect of good shunt characteristics.

Active Publication Date: 2016-05-04
HITACHI JOHNSON CONTROLS AIR CONDITIONING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, according to the structure of the expansion valve described in the above patent document, the installation of the filter is not easy.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] figure 2 It is an example of a configuration diagram of a refrigeration cycle device 100 according to this embodiment, for example, a room air conditioner. Here, reference numeral 1 is a compressor, reference numeral 2 is a first heat exchanger, reference numeral 3 is an expansion valve, reference numeral 4 is a refrigerant flow divider, and reference numeral 5 is a second heat exchanger , Reference numeral 6 is a four-way valve. The above-mentioned essential devices are connected by refrigerant piping to constitute the refrigeration cycle apparatus 100 .

[0029] The first heat exchanger 2 functions as a condenser, and the second heat exchanger 5 functions as an evaporator, and the refrigerant flows through compressor 1→first heat exchanger 2→expansion valve 3→refrigerant flow divider 4 →Second heat exchanger 5→The order of compressor 1 (indicated by the solid arrow) In the case of internal circulation in the refrigeration cycle device 100, the refrigerant after pas...

Embodiment 2

[0056] Figure 10 An example of a configuration diagram of a refrigeration cycle device 101 according to Embodiment 2, such as a box-type air conditioner, is shown. Here, reference numeral 1 is a compressor, reference numeral 2 is a first heat exchanger, reference numerals 3a and 3b are expansion valves, reference numerals 4a and 4b are refrigerant flow dividers, and reference numeral 5 is a second heat exchanger. In the second heat exchanger, reference numeral 6 is a four-way valve, and reference numeral 91 is a connecting pipe. Wherein, both the first heat exchanger 2 and the second heat exchanger 5 have a multi-channel structure.

[0057] When the first heat exchanger 2 functions as a condenser and the second heat exchanger 5 functions as an evaporator, as indicated by the solid line arrow in the figure, the flow is split through the first heat exchanger 2 The liquid refrigerant joined in the tank 4a passes through the expansion valve 3a and the connection pipe 91, is dec...

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Abstract

An object of the present invention is to provide a refrigeration cycle device capable of realizing good flow distribution characteristics under a wide range of usage conditions without being affected by installation postures of refrigerant flow dividers, manufacturing differences, and the like. The refrigeration cycle device includes: a compressor for compressing the refrigerant; a condenser for condensing the refrigerant compressed by the compressor; and an expansion valve (3) for decompressing the refrigerant condensed by the condenser; A splitter (4) that is separate from the expansion valve (3) and diverts the refrigerant decompressed by the expansion valve (3) to a plurality of flow paths formed inside; and the splitter ( 4) An evaporator for evaporating the divided refrigerant, wherein the expansion valve (3) and the flow divider (4) are configured in such a way that L / D≤1.2G0.36 and L / D≥1.5. Where, L[m] is the distance from the throttling area (300) of the expansion valve (3) to the branching area (400) of the flow divider (4), D[m] is the second connecting pipe of the expansion valve (3) The inner diameter of (32), G[kg / (m2s)] is the mass velocity of refrigerant flowing in the second connecting pipe (32) of the expansion valve.

Description

technical field [0001] The present invention relates to a refrigeration cycle device provided with an expansion valve and a refrigerant flow divider. Background technique [0002] As the background art in this technical field, there is Japanese Unexamined Patent Application Publication No. 2009-24937 (Patent Document 1). An object of this prior art is to provide a refrigerant distribution chamber-integrated expansion valve in which an expansion valve and a refrigerant flow distributor are integrated, and which can easily cope with different numbers of passages. [0003] The publication describes the following content: "The valve main body is composed of a valve chamber part and a distribution chamber part. The valve chamber part uses the inside of the housing as the valve chamber, and uses the partition wall separating the valve chamber and the refrigerant distribution chamber as the bottom wall. In this The casing is formed with the inlet port that accommodates the throttl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B41/00
CPCF25B39/028F25B2500/01F25B41/31
Inventor 薛隽远藤和广坪江宏明横关敦彦
Owner HITACHI JOHNSON CONTROLS AIR CONDITIONING INC
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