Water circuit abnormality detection method and detection system of air energy water heater

Abstract

The invention provides a waterway abnormal detection method and system for an air energy hot water unit and relates to an air energy hot water unit. According to the waterway abnormal detection method and system for the air energy hot water unit, operation is easy, safety is high, and waterway abnormity can be detected before starting-up. The waterway abnormal detection method for the air energy hot water unit comprises the following steps that before the air energy hot water unit is started up, a water pump is controlled to be started; and according to the change of the water temperature in a circulating pipeline, whether a waterway is abnormal or not is judged. According to the waterway abnormal detection method for the air energy hot water unit, before the air energy hot water unit is started up, and a compressor works, whether the waterway is abnormal or not is detected, when the waterway is abnormal, starting-up operation is not conducted, and the compressor is protected against damaging accordingly.

Description

technical field [0001] The invention relates to an air energy water heater, in particular to a water channel abnormality detection method and detection system of the air energy water heater. Background technique [0002] Nowadays, with the deteriorating environment, different degrees of smog have appeared in North China, Northeast China, East China, Northwest China and other regions. A large part of it is caused by coal-fired heating in winter. Therefore, the demand for high-efficiency air-energy water heaters is increasing, and in air-energy water heaters, due to improper water installation, broken water pumps, or waterway congestion, etc., the unit will be protected after starting up, but frequent protection will also cause Compressor damage. [0003] The design and installation of the water pipe network in the project plays a key role in the reliability of the air source water heater. Long-term in the abnormal water environment, it is easy to cause damage to the unit, an...

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Problems solved by technology

Therefore, the demand for high-efficiency air-energy water heaters is increasing, and in air-energy water heaters, due to improper water installation, broken water pumps, or waterway congestion, etc., the unit will be protected after starting up, but frequent protection will also cause compressor damage

[0003] The design and installation of the water pipe network in the project plays a key role in the reliability of the air source water heater. Long-term in the abnormal water environment, it is easy to cause damage to the unit, and the existing project needs to install a water flow switch In order to avoid the protection of the unit due to lack of water, but in practice, due to the high failure rate of the water flow switch, the short-circuit treatment has been carried out in the project, so now the water circuit abnormality can only be reported for protection and shutdown after starting up, so it is necessary to start as much as possible. abnormality of the waterway is judged before

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