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Heat exchanger for R32 twin-step compressed heat pump air conditioner

A technology of heat pump air conditioning and two-stage compression, which is applied in air conditioning systems, household heating, household heating, etc., can solve the problems of uneven heat flux and pressure gradient on the surface of heat exchangers, and achieve the best overall performance Uniform, uniform pressure gradient effect

Active Publication Date: 2014-04-09
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a heat exchanger for R32 two-stage compression heat pump air conditioning system to solve the technical problem of uneven heat flux density and pressure gradient on the surface of the heat exchanger

Method used

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  • Heat exchanger for R32 twin-step compressed heat pump air conditioner
  • Heat exchanger for R32 twin-step compressed heat pump air conditioner
  • Heat exchanger for R32 twin-step compressed heat pump air conditioner

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Embodiment Construction

[0024] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

[0025] see Figure 1 to Figure 4 , the present invention provides a heat exchanger for an R32 two-stage compression heat pump air-conditioning system, the heat exchanger for an R32 two-stage compression heat pump air-conditioning system has a refrigerant flow channel, and the number of branches of the refrigerant flow channel increases with the The increase of refrigerant flow dryness increases. The pipeline can be two-stage or multi-stage, and the multi-stage includes inlet, outlet and intermediate pipelines. The heat exchanger of the present invention includes an outdoor heat exchanger and an indoor heat exchanger. When the air-conditioning system is in cooling operation, the outdoor heat exchanger is used as a condenser, and the indoor heat exch...

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Abstract

The invention provides a heat exchanger for an R32 twin-step compressed heat pump air conditioner. The heat exchanger for R32 twin-step compressed heat pump air conditioner is provided with a refrigerating fluid flow channel, and branching numbers of the refrigerating fluid flow channel increase according to the increase of refrigerating fluid flow dryness. The heat exchanger for R32 twin-step compressed heat pump air conditioner comprises an outdoor heat exchanger and an indoor heat exchanger, the flow path design method takes inner heat transfer and flow characteristics of the heat exchanger into full consideration, and the branching numbers of the refrigerating fluid flow channel increase according to the increase of refrigerating fluid flow dryness, so that surface heat flow intensity of the heat exchanger is even, and pressure gradient change is even.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to a heat exchanger for an R32 two-stage compression heat pump air conditioning system. Background technique [0002] At present, refrigerants used in air conditioners such as R22 and R410A have high greenhouse effect potential (GWP) (about 1810 and 2100 respectively), and the high direct carbon emissions have become an environmental protection issue that the industry and the government are focusing on. The GWP (about 670) of R32 refrigerant with excellent thermal performance is less than 1 / 3 of R410A, so it has gradually become an alternative to higher GWP refrigerants such as R22 and R410A. However, R32 refrigerant has certain flammability, and when it is used in a single-stage vapor compression cycle system, it has an excessively high exhaust temperature, which limits its safe use to a certain extent. Effectively reduce compressor discharge temperature. The combination of R32 re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F13/30F24F1/16
Inventor 涂小苹梁祥飞
Owner GREE ELECTRIC APPLIANCES INC
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