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Heat exchanger anti-icing method during defrosting of heat pump unit and heat pump unit

A heat pump unit and heat exchanger technology, which is applied in heat pumps, refrigerators, damage protection, etc., can solve the problems of water ineffective flow and unit freezing, and achieve the effect of avoiding freezing damage to the evaporator.

Pending Publication Date: 2021-04-09
深圳市深蓝电子股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a heat exchanger anti-icing method and a heat pump unit during defrosting of the heat pump unit, which solves the problem that the water cannot flow effectively, and the deposited water will enter the freezing state due to the continuous low temperature, resulting in the freezing phenomenon of the unit

Method used

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  • Heat exchanger anti-icing method during defrosting of heat pump unit and heat pump unit
  • Heat exchanger anti-icing method during defrosting of heat pump unit and heat pump unit

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Embodiment Construction

[0028] 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 those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0029] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " The orientation or positional relationship indicated by "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation shown in the drawings Or positional relationship is only for the convenience of describing the present invention and simpl...

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Abstract

The invention discloses a heat exchanger anti-icing method during defrosting of a heat pump unit and the heat pump unit. The heat exchanger anti-icing method comprises the steps that the protection temperature, the protection time delay and the anti-icing returning protection temperature difference are set; an anti-icing temperature sensor is arranged at the bottom of a water side heat exchanger to obtain the anti-icing temperature in real time; and an anti-icing mechanism of an evaporator is determined according to the anti-icing temperature, the protection temperature, the protection time delay and the anti-icing returning protection temperature difference. The method has the beneficial effects that by detecting the temperature of the bottom of the water side heat exchanger, a control system can accurately recognize the internal temperature of the water side heat exchanger, and therefore the situation that the evaporator is iced and damaged when a unit is defrosted in winter is effectively avoided.

Description

technical field [0001] The invention relates to the technical field of defrosting heat pump units, and more specifically relates to a heat exchanger anti-icing method and a heat pump unit during defrosting of a heat pump unit. Background technique [0002] When the air-cooled heat pump unit is running in winter, due to the low ambient temperature, frost will appear on the fin heat exchanger. Due to the existence of the frost layer, the heat transfer resistance between the heat exchanger and the ambient air increases, which reduces the ability of the heat exchanger to absorb heat. Therefore, if the defrosting is not timely and effective, the operating efficiency of the heat pump unit in winter will be greatly reduced. Existing air-cooled heat pump units usually adopt the reverse defrosting method. Although this defrosting method has a faster defrosting speed, but because the unit operates in reverse, when the fin heat exchanger heats up and defrosts, the water side evaporates...

Claims

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Application Information

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IPC IPC(8): F25B47/00F25B49/02F25B30/02
CPCF25B47/006F25B49/02F25B30/02
Inventor 胡逢信林彬黄柳元林荣皓
Owner 深圳市深蓝电子股份有限公司
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