Control method and system of heat pump water heater
A technology of a heat pump water heater and a control method, which is applied in the field of heat pumps, can solve problems such as a high failure rate of compressors, achieve the effects of reducing load, increasing condensation temperature, and avoiding burning of compressors
Active Publication Date: 2015-10-14
GREE ELECTRIC APPLIANCES INC
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Problems solved by technology
Long-term high-load status is a major test for the long-term reliable operation of the compressor, which in turn leads to a high failure rate of the compressor of the air energy heat pump water heater
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[0041] This specific embodiment provides a control method for a heat pump water heater, which can ensure that the real-time operating state of the compressor of the air energy heat pump water heater is kept within a reliable operating range, thereby ensuring the reliability of the compressor operation and improving the compression efficiency. machine life. This specific embodiment also provides a control system for the heat pump water heater. Similarly, the control system can ensure that the real-time operating state of the compressor of the air source heat pump water heater is kept within a reliable operating range.
[0042] 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, a...
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The invention discloses a control method of a heat pump water heater. The method includes the steps of acquiring condensing temperature and evaporating temperature, comparing the condensing temperature with a preset condensing temperature range, comparing the evaporating temperature with a preset evaporating temperature range, and according to comparing results, guiding a hydraulic refrigerant condensed by a condenser into a compressor or decreasing the speed of air blown to the evaporator or decreasing the opening degree of a throttling valve on a refrigerant pipeline arranged between the condenser and the evaporator or controlling the heat pump water heater to be halted. By means of the control method, it can be guaranteed that the real-time operating state of the compressor of the heat pump water heater is kept within a reliable operating range, so that the operating reliability of the compressor is guaranteed and the service life of the compressor is prolonged. The invention further provides a control system of the heat pump water heater.
Description
technical field [0001] The invention relates to the technical field of heat pumps, and in particular to a control method and a control system for a heat pump water heater. Background technique [0002] The air energy heat pump water heater can absorb the low-temperature heat energy in the air, and convert it into high-temperature heat energy after being compressed by the compressor to heat the water temperature. The air energy heat pump water heater has been widely praised by users because of its outstanding energy saving and large water production capacity. [0003] In the prior art, since the air source heat pump water heater requires the outlet water temperature not to be lower than 55°C, this makes the condensation temperature of the air source heat pump water heater relatively high, and the high condensation temperature is the performance of the compressor operating under high load. Long-term high-load status is a major test for the long-term reliable operation of the ...
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IPC IPC(8): F24H9/20
Inventor 曾磊李绍斌袁明征张勇
Owner GREE ELECTRIC APPLIANCES INC