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Air source heat pump system and its defrosting method

An air source heat pump and air heat exchanger technology, applied in the field of air conditioning, can solve the problems of reduced operating efficiency of the unit, frosting of the outdoor heat exchanger of the unit, etc. Effect

Inactive Publication Date: 2009-12-09
BEIJING TONGYONG RENHUAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the air source heat pump system can run all year round, during the heating operation in winter, frosting will occur on the outdoor heat exchanger of the unit, which will reduce the operating efficiency of the unit

Method used

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  • Air source heat pump system and its defrosting method
  • Air source heat pump system and its defrosting method
  • Air source heat pump system and its defrosting method

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Embodiment Construction

[0023] The specific embodiments of the present invention will be described below in conjunction with the accompanying drawings:

[0024] See figure 1 , figure 2 , image 3 As shown, an air source heat pump system includes: one end of an air heat exchanger (1) is connected to a reversing valve, and the other end is connected to a throttle valve; the reversing valve and the throttle valve are respectively connected to the water heat exchanger ( 5) Connected to the compressor (2); the air heat exchanger (1) is a two-channel isolated from each other, one end of which is connected to the corresponding reversing valve (3) or (4), and the other end Connect with the corresponding throttle valve (6) or (7); the other end of the reversing valve (3) or (4) is connected with the compressor (2) or the water heat exchanger (5); The internal refrigerant passages of the water heat exchanger (5) are mutually independent dual passages (51) and / or (52), and share a water system; one end of the pass...

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Abstract

The invention relates to an air source heat pump system and a defrosting method thereof. The air heat exchanger (1) in the system is provided with mutually isolated dual channels, one end of which is connected to the corresponding reversing valve (3) or (4) The other end is connected with the corresponding throttle valve (6) or (7); the other end of the reversing valve (3) or (4) is connected with the compressor (2) or the water heat exchanger (5) ; The internal refrigerant passages of the water heat exchanger (5) are set as mutually independent double passages (51) and / or (52), and share a water system; wherein one end of the passages (51) and / or (52) corresponds to Connect a corresponding throttle valve and reversing valve; when one of the channels of the air heat exchanger and the water heat exchanger is in an evaporating state, the other channel can be in a condensing state. The system can realize non-stop operation during the defrosting process; the defrosting time is shortened, the heating operation efficiency of the system and the safety and reliability of the unit operation are improved.

Description

Technical field [0001] The invention relates to an air source heat pump system and a defrosting method thereof, and belongs to the field of air conditioning. Background technique [0002] Air-source heat pump system, also known as air-source central air-conditioning system, is a heat pump type air-conditioning device that uses air as the heat source and can perform a cooling / heating cycle. It uses air as the heat source during heating and air as the heat source during cooling. Exhaust heat source. Using air as the cold source / heat source carrier, without cooling towers, cooling pumps and cooling pipes, it can save a lot of valuable water or land resources, and also avoid the pollution of water source water quality; the air source heat pump system is placed outdoors and does not occupy indoor buildings Space, saves the special refrigerating machine room and boiler room, reduces the civil engineering investment; When the system is running, there is no "waste residue, waste gas, was...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B13/00F25B30/06F25B47/02
Inventor 苑增之郑兴旺
Owner BEIJING TONGYONG RENHUAN TECH
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