On-line self-diagnosis control method for heat pump water heater and on-line self-diagnosis control device of heat pump water heater

Abstract

The invention provides an on-line self-diagnosis control method for a heat pump water heater and an on-line self-diagnosis control device of the heat pump water heater, and relates to quality detection control method and device by means of a fluid heater of a heat pump. A heat pump water heater controller is utilized to obtain variable working condition operation actually-measured data, the variable working condition operation actually-measured data are compared with variable working condition operation essential data in a database, and automatic on-line quality detection of the whole heat pump water heater is achieved. The on-line self-diagnosis control device comprises a data analysis unit, a quality testing control terminal, an environment temperature detection module, a heat pump water heater interface unit, a high-pressure side pressure detection module, a low-pressure side pressure detection module, a power supply electric energy detection module and a water volume detection adjusting module. The quality testing control terminal and the environment temperature detection module are connected to the data analysis unit, and the data analysis unit is connected to a database management system. A heat pump water heater variable working condition operation database is set to automatically diagnose whether products are qualified or not, so judgments are more accurate, the quality of the whole heat pump water heater can be guaranteed, and meanwhile cost of quality testing of the products can be greatly reduced.

Description

technical field [0001] The invention relates to a method and device for quality detection and control of a fluid heater utilizing a heat pump, in particular to an online self-diagnosis control method for a heat pump water heater and a control device thereof for quality detection of the heat pump water heater. Background technique [0002] Because the heat pump water heater has many advantages such as energy saving, environmental protection, and safety, it has been recognized by the country and society. And air-conditioning equipment companies have joined the field. However, because some small and medium-sized enterprises do not have the necessary R&D, production and quality inspection capabilities, after the products produced by such enterprises are put into the market, the product quality is unstable, the energy saving effect is poor, and consumers have bad consequences. The development of the entire heat pump water heater market has brought a great negative impact. In ad...

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Problems solved by technology

However, since this system uses the environmental chamber to realize the performance test of the tested heat pump unit, it also cannot solve the technical problem of online quality inspection of heat pump water heater products.

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