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Heat pumping set with compensation throttle flow

A technology of throttling flow for heat pump units, which is applied in the direction of refrigerators, refrigeration components, fluid circulation arrangements, etc., can solve the problems of limited adjustment capacity of two-way expansion valves, low efficiency, and difficult balance of refrigerant throttling flow, etc., to achieve unit The effect of stable and reliable operation and improved work efficiency

Inactive Publication Date: 2005-06-01
TONGFANG ARTIFICIAL ENVIRONMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in use, due to the limited adjustment capability of the two-way expansion valve and the narrow range of operating conditions, there are problems such as difficulty in refrigerant throttling flow balance and low efficiency in the two processes of cooling and heating.

Method used

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  • Heat pumping set with compensation throttle flow
  • Heat pumping set with compensation throttle flow
  • Heat pumping set with compensation throttle flow

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Experimental program
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Embodiment Construction

[0011] see image 3 , the present invention comprises a compressor 1, a four-way valve 3, a condenser 4, a two-way expansion valve 5, a capillary 6 connected in parallel with the two-way expansion valve 5, an evaporator 7 and a vapor-liquid separator 2, which are connected to each other by pipelines to form a heat pump unit.

[0012] In the refrigeration process of the present invention, the compressor 1 compresses the low-temperature and low-pressure refrigerant vapor inhaled from the evaporator 7 through the vapor-liquid separator 2, and the high-temperature and high-pressure vapor produced enters through the exhaust port of the compressor 1 through the four-way valve 3 Condenser 4, and condensed into high-pressure liquid through the positive direction of two-way expansion valve 5 and the joint throttling of capillary tube 6 to form low-temperature and low-pressure wet vapor into evaporator 7, and then evaporated into low-temperature and low-pressure steam, and return to Th...

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PUM

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Abstract

The present invention is one kind of heat pump set with compensating throttle flow rate and relates to air conditioning technology. The present invention has system loop comprising compressor, four-way valve, condenser, evaporator, vapor-liquid separator and restrictor. Structurally, the present invention features that the restrictor consists of bi-directional expansion valve and capillary, the bi-directional expansion valve is connected serially in the system loop and the capillary is connected parallelly with the bi-directional expansion valve. Compared with available technology, the present invention has the heat pump set possess required flow rate in both refrigerating and heating process, high stability and reliability, and greatly raised work efficiency.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a heat pump unit with a compensating throttling flow. Background technique [0002] Most of the throttling devices in traditional heat pump units use a throttling circuit consisting of two expansion valves and two check valves, such as figure 1 shown; or a throttling circuit consisting of an expansion valve and four check valves, such as figure 2 shown. To ensure the same throttling characteristics when bidirectional throttling. The disadvantage of these two loops is that the structure is complex, which not only takes up a large space and increases the cost of materials, but also easily causes leakage due to many solder joints. For this reason, a two-way expansion valve is used in the heat pump unit of the prior art to replace the traditional valve assembly circuit, which can greatly simplify the equipment structure and reduce the equipment cost. However, in use, du...

Claims

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Application Information

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IPC IPC(8): F25B41/04
Inventor 白俊文王增翔杨良国贺卿秦茜范新
Owner TONGFANG ARTIFICIAL ENVIRONMENT