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Fluorine deficiency judgment method and heat pump water heater

A heat pump water heater and fluorine-deficiency technology, which is applied in fluid heaters, lighting and heating equipment, damage protection, etc., can solve the problems of fluorine-deficiency judgment schemes that are prone to misjudgment, and achieve the effects of avoiding performance attenuation and reducing costs

Active Publication Date: 2020-03-31
GREE ELECTRIC APPLIANCES INC
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the defect that the existing fluorine deficiency judgment scheme is prone to misjudgment, the present invention proposes a fluorine deficiency judgment method and a heat pump water heater

Method used

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  • Fluorine deficiency judgment method and heat pump water heater

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Embodiment Construction

[0022] Such as figure 1 As shown, the fluorine deficiency judgment method proposed by the present invention can be used in heat pump water heaters. Usually, when the ambient temperature is high, the suction superheat of the heat pump water heater unit is very large, and the opening of the throttling device may also reach the maximum value. Suction superheat and the opening of the throttling device are easy to misjudge the fluorine deficiency of the unit. In order to avoid the misjudgment of fluorine deficiency, the fluorine deficiency judging method of the present invention includes: judging whether the unit has a defrosting flag, If so, analyze whether the unit lacks fluorine according to the operating parameters of the unit.

[0023] Specifically, according to the operating parameters of the unit, the analysis of whether the unit is deficient in fluorine includes: collecting the suction superheat of the unit and the opening of the throttling device, comparing the suction sup...

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Abstract

The invention discloses a fluorine deficiency judgment method and a heat pump water heater. The fluorine deficiency judgment method comprises the steps that whether a unit has a defrosting mark position or not is judged, if yes, the air suction superheat degree of the unit and the opening degree of a throttling device are collected, and whether the unit is lack of fluorine or not is judged according to the air suction superheat degree and the opening degree. Whether fluorine deficiency judgment is carried out or not is determined according to whether the unit has the defrosting mark position or not, so that fluorine-leaking units can be identified in time. Whether the unit is lack of fluorine or not is precisely judged by comprehensively utilizing the defrosting mark position, the air suction superheat degree, the opening degree of the throttling device and other parameters, early warning is conducted in advance to avoid performance attenuation of the unit due to excessive loss of a refrigerant, and meanwhile, the cost for filling the refrigerant due to excessive fluorine leakage is reduced.

Description

technical field [0001] The invention relates to the technical field of water heaters, in particular to a method for judging lack of fluorine and a heat pump water heater. Background technique [0002] Air energy water heater is also called air source heat pump water heater. Its working principle is to absorb the low-temperature heat in the air, gasify it through the fluorine medium, and then pressurize it through the compressor to increase the temperature, and then convert it through the heat exchanger to heat the water. After compression The high-temperature heat energy is used to heat the water temperature. Due to the influence of various factors in the actual operation of the air source heat pump water heater, the unit may cause fluorine leakage. The existing control scheme is not accurate in judging, and the response is relatively lagging. Misjudgment may even occur, increasing maintenance costs and affecting user experience. [0003] Therefore, how to improve the accu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24H4/02F25B47/02F25B49/02
CPCF24H4/02F25B47/02F25B49/02F25B2500/22
Inventor 黎珍邓志扬张勇袁明征董昊周亚熊月忠唐用强李文健
Owner GREE ELECTRIC APPLIANCES INC
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