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A heat pump unit

A technology of unit and heat pump, which is applied in refrigerators, refrigeration components, lighting and heating equipment, etc. It can solve the problems of incomplete defrosting, frost-free defrosting, and energy loss, so as to prevent energy loss and avoid frost-free defrosting , the effect of reducing energy loss

Active Publication Date: 2016-06-08
SHENZHEN MCQUAY AIR CONDITIONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the second method, due to the inability to detect the surface temperature of the evaporator at all times, incomplete defrosting or non-frost defrosting may occur, resulting in energy loss

Method used

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  • A heat pump unit

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Embodiment Construction

[0032] The core of the invention is to provide a heat pump unit to reduce energy loss.

[0033] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0034] Please refer to figure 1 As shown, the embodiment of the present invention discloses a heat pump unit, which includes a compressor 1; a four-way valve 2, and the D port of the four-way valve 2 is connected to the output end of the compressor 1; , its gas pipe is connected to the C interface of the four-way valve 2; the liquid pipe of the water side heat exchanger 8 is connected to the liquid pipe of the wind side heat exchanger 3 through the throttling part 7, and the gas pipe of the water side heat exchanger 8 is connected to the The E interface of the four-way valve 2 is connected; the inlet of the gas-liquid separator 10 is connected with the ...

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Abstract

The invention provides a heat pump type unit which comprises a compressor, a four-way valve, an air side heat exchanger, a water side heat exchanger, a gas-liquid separator, a fan, an environment temperature sensor, a temperature sensor and a controller. The temperature sensor is arranged on the zone where temperature is the lowest during heating on the air side heat exchanger. When a series of conditions are met at the same time, defrosting is carried out, and when the condition of defrosting stopping is met, a cooling process is carried out. The temperature sensor is arranged on the zone where temperature is the lowest during heating on the air side heat exchanger, the lowest temperature on the surface of the air side heat exchanger can be detected at any time, the problem of incomplete defrosting can be avoided, meanwhile, the working condition of the controller is limited, stable defrosting of the heat pump type unit can be achieved, a system needs to meet a plurality of conditions to enter a defrosting working condition, accordingly, the problem of frost-free defrosting can be avoided, and therefore energy loss is lowered. The heat pump type unit can effectively avoid energy loss.

Description

technical field [0001] The invention relates to the technical field of water chillers, in particular to a heat pump unit. Background technique [0002] With the rise of energy-saving voices, air-cooled heat pump units are more and more popular because of their water saving. However, when the air-cooled heat pump unit is in heating operation, due to the low outdoor temperature, frost will gradually form on the surface of its evaporator, and as the frost layer thickens, the outlet air temperature and heating capacity of the outdoor condenser will gradually decrease. Defrost has become a necessary step to ensure the normal operation of air-cooled heat pump units. [0003] At present, there are generally two defrosting methods for heat pump units. One is to stop the defrosting and let the frost melt by itself, but this method is not feasible when the external environment temperature is low, and the defrosting time is longer; One is heating and defrosting, that is, using a four...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B47/02F25B49/02
Inventor 闾灿荣
Owner SHENZHEN MCQUAY AIR CONDITIONING
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