Air source heat pump high-pressure waste heat defrosting system

An air source heat pump, high pressure technology, applied in lighting and heating equipment, damage protection, mechanical equipment, etc., can solve the problems of evaporator frosting, frequent defrosting, energy consumption, etc., to improve air exchange efficiency, reduce time and energy consumption. Energy consumption, the effect of increasing the condensation area

Inactive Publication Date: 2020-07-14
代秀平 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The air source heat pump is an environmentally friendly energy source for the current coal-to-electricity project, and it has been widely used. However, the low temperature in the north has greatly restricted the air source heat pump. The ambient temperature is low. In winter heating mode, the external evaporator Severe frosting causes the refrigerant to not fully evaporate, which greatly affects the heating effect. When the frosting is severe, frequent defrosting is required, which consumes energy and reduces the heating effect. This is an insurmountable shortcoming of the current air source heat pump air conditioner
Although some air source heat pumps use low-temperature enthalpy increasing technology, it still cannot solve the problem of frosting on the evaporator. The inventor has been engaged in the refrigeration industry for many years, and he was troubled by frosting on the evaporator of the external unit during heating in winter.

Method used

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  • Air source heat pump high-pressure waste heat defrosting system

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Embodiment Construction

[0014] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. It should be noted here that the descriptions of these embodiments are used to help understand the present invention, but are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.

[0015] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawi...

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Abstract

The invention discloses an air source heat pump high-pressure waste heat defrosting system. The air source heat pump high-pressure waste heat defrosting system comprises an outdoor heat exchanger, a compressor, a conversion valve set, an air source fin exchanger and a four-way reversing valve. The outdoor heat exchanger, the compressor and the air source fin exchanger are all connected with the four-way reversing valve. The outdoor heat exchanger and the air source fin exchanger are both connected with the conversion valve set. The air source heat pump high-pressure waste heat defrosting system heats an outdoor evaporator through heat left after exchange of a condenser during heating in winter to raise the temperature of fins and prevent frosting, so that a refrigerant is fully evaporatedto improve the heating efficiency, and energy waste caused by defrosting is reduced.

Description

technical field [0001] The invention relates to the technical field of air source heat pumps, in particular to an air source heat pump high-pressure waste heat defrosting system. Background technique [0002] The air source heat pump is an environmentally friendly energy source for the current coal-to-electricity project, and it has been widely used. However, the low temperature in the north has greatly restricted the air source heat pump. The ambient temperature is low. In winter heating mode, the external evaporator Severe frosting causes the refrigerant to not fully evaporate, which greatly affects the heating effect. When the frosting is severe, frequent defrosting is required, which consumes energy and reduces the heating effect. This is an insurmountable shortcoming of the current air source heat pump air conditioner. Although some air source heat pumps adopt low-temperature enthalpy increasing technology, the problem of frosting on the evaporator cannot be solved. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B47/02F25B41/04F25B41/20
CPCF25B47/025F25B41/26
Inventor 代秀平孔晓华
Owner 代秀平
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