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Defrosting method and device for heat pump equipment and hot water unit

An equipment and heat pump technology, applied in the field of heat pump equipment, can solve the problem of low service life of the four-way valve, and achieve the effects of prolonging the service life, increasing the evaporation temperature, and preventing frosting or defrosting.

Active Publication Date: 2021-11-12
QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The embodiments of the present disclosure provide a method and device for defrosting heat pump equipment and a hot water unit to solve the problem of frequent switching of the four-way valve when the heat exchanger of the external unit is frequently frosted, resulting in a shorter service life of the four-way valve. low technical issues

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  • Defrosting method and device for heat pump equipment and hot water unit
  • Defrosting method and device for heat pump equipment and hot water unit
  • Defrosting method and device for heat pump equipment and hot water unit

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Embodiment Construction

[0031] In order to understand the characteristics and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. The attached drawings are only for reference and description, and are not intended to limit the embodiments of the present disclosure. In the following technical description, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawings.

[0032] The terms "first", "second" and the like in the description and claims of the embodiments of the present disclosure and the above drawings are used to distinguish similar objects, and are not necessarily used...

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Abstract

The invention relates to the technical field of heat pump equipment, and discloses a defrosting method for the heat pump equipment. The defrosting method for the heat pump equipment comprises the steps that under the condition that an outdoor unit heat exchanger of the heat pump equipment is in a refrigeration mode, the temperature of the outdoor unit heat exchanger is obtained; under the condition that the temperature of the outdoor unit heat exchanger is smaller than or equal to a set frosting temperature threshold value, an air supply valve is opened; and under the condition that the temperature of the outdoor unit heat exchanger is larger than or equal to a set defrosting temperature threshold value, the air supply valve is closed. By the adoption of the defrosting method for the heat pump equipment, the defrosting effect can be achieved without switching a four-way valve, and the service life of the four-way valve is prolonged. The invention further discloses a defrosting device for the heat pump equipment and a hot water unit.

Description

technical field [0001] The present application relates to the technical field of heat pump equipment, for example, to a method, device and hot water unit for defrosting heat pump equipment. Background technique [0002] At present, when the outdoor ambient temperature is 2°C, users use the hot water unit for the longest time. In this environment, the external unit heat exchanger of the hot water unit is prone to frost. Reduce the heating efficiency of the hot water unit. [0003] In some existing hot water units, when the external unit heat exchanger is frosted, the external unit heat exchanger of the hot water unit is controlled to enter the heating mode to realize defrosting, and then the hot water unit is controlled to operate normally, that is Control the internal unit heat exchanger of the hot water unit to operate in the heating mode, and control the external unit heat exchanger of the hot water unit to operate in the cooling mode. [0004] In the process of implemen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B47/02F25B41/20F25B49/02
CPCF25B47/02F25B41/20F25B49/02F25B2347/02Y02B30/70
Inventor 张嘉诚刘峻杉刘汇泉李旭夏鹏
Owner QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD
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