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Defrosting system of air-source heat pump

An air source heat pump and air outlet technology, applied in the field of heat pump defrosting, can solve the problems of large energy consumption and complex structure

Pending Publication Date: 2018-05-04
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing heat pump defrosting system usually has a complex structure and consumes a lot of energy

Method used

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  • Defrosting system of air-source heat pump
  • Defrosting system of air-source heat pump

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Embodiment Construction

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0020] The core of the present invention is to provide an air source heat pump defrosting system. The circulation loop structure of the air source heat pump defrosting system is simple, and the waste heat of the heating cycle can be effectively used for defrosting. Therefore, defrosting and energy saving can be achieved at the same time. purpose, and the cost is low.

[0021] Please refer to figure 1 , is a structural schematic diagram of a specific embodimen...

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Abstract

The invention discloses a defrosting system of an air-source heat pump. The defrosting system comprises an outdoor unit, an indoor unit, a phase-change energy accumulator, a compressor, a four-way valve and a throttling element, wherein a port A of the four-way valve is communicated with the indoor unit through a pipeline provided with a first electromagnetic valve, and is communicated with the phase-change energy accumulator through a pipeline provided with a second electromagnetic valve; a port B of the four-way valve is communicated with an air suction opening of the compressor through a pipeline; a port C of the four-way valve is communicated with the outdoor unit through a pipeline; a port D of the four-way valve is communicated with an air exhaust opening of the compressor through apipeline; the indoor unit and the phase-change energy accumulator are communicated with the throttling element respectively through pipelines which are provided with a check valve and a third electromagnetic valve; the throttling element is communicated with the outdoor unit through a pipeline; an inlet of the check valve is communicated with the indoor unit; an outlet of the check valve is communicated with the throttling element. The defrosting system of the air-source heat pump has a simple structure, and residual heat of a heating cycle can be effectively utilized to carry out defrosting.

Description

technical field [0001] The invention relates to the technical field of heat pump defrosting, and more specifically relates to an air source heat pump defrosting system. Background technique [0002] As a device that can transfer heat energy from a low-level heat source to a high-level heat source, a heat pump is widely used in heating cycle systems. [0003] In the cold winter, an air source heat pump unit is usually used to heat the room. However, in the prior art, since the temperature of the outdoor environment is generally low in winter, when the temperature of the coil of the outdoor unit is lower than the dew point temperature of the outdoor air, frost usually forms on the coil of the outdoor unit. A large amount of frost accumulating on the coil of the outdoor unit will greatly weaken the heat transfer performance of the evaporator. At the same time, it will hinder the air flow between the coils of the outdoor unit and increase the energy loss of the fan. Therefore,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B47/02F25B13/00F25B30/02F25B41/06F25B29/00F25B49/02F25B41/20F25B41/30F25B41/37
CPCF25B13/00F25B29/003F25B30/02F25B47/02F25B49/02F25B2700/21F25B2313/02741F25B41/37F25B41/31
Inventor 柯秀芳何淋秦红马晓震柯勇
Owner GUANGDONG UNIV OF TECH
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