Waterway blockage detection method and device for a heat pump water heating system
A plumbing system and heat pump technology, which is applied in the field of waterway blockage detection of heat pump plumbing systems, can solve the problems of complex design and wiring, and cannot accurately feedback the working status of heat pump plumbing systems, and achieve the effect of avoiding low accuracy
Active Publication Date: 2019-06-28
QINGDAO HISENSE HITACHI AIR CONDITIONING SYST
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Problems solved by technology
[0005] Embodiments of the present invention provide a waterway blockage detection method and device for a heat pump water heating system to solve the problem of complicated design and wiring of an existing heat pump water heating system using an AC water pump due to the addition of hardware equipment, and the inability to accurately feedback the work of the heat pump water heating system status problem
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[0020] The following will clearly and completely describe the technical solutions in the embodiments of the application of the present invention in conjunction with the accompanying drawings in the embodiments of the application of the present invention. Obviously, the described embodiments are only part of the embodiments of the application of the present invention, not all of them. example. Based on the embodiments in the application of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the application of the present invention.
[0021] The heat pump plumbing system involved in this application is introduced below for the convenience of readers' understanding:
[0022] The heat pump water heating system provided in this application includes an outdoor unit, a DC frequency conversion water pump, a water circuit and a water module. Among them, the outdoor unit exchange...
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The embodiment of the present invention provides a waterway blockage detection method and device for a heat pump water heating system, which relates to the technical field of home appliances, and solves the problem of complicated design and wiring of an existing heat pump water heating system using an AC water pump due to the addition of hardware equipment, and the inability to provide accurate feedback Problems with the working state of the heat pump plumbing system. The method specifically includes: obtaining the current operating parameters of the heat pump water heating system and the output index of the DC variable frequency water pump in the heat pump water heating system at the current speed; finding the DC variable frequency water pump that matches the current operating parameters at the current speed from the water flow list The output target output index; according to the output index of the DC variable frequency water pump at the current speed and the target output index of the DC variable frequency water pump at the current speed, it is judged whether the waterway of the heat pump water heating system is blocked.
Description
technical field [0001] The invention relates to the technical field of home appliances, in particular to a method and device for detecting water blockage of a heat pump water heating system. Background technique [0002] Existing plumbing products will experience abnormalities when used for a long time. For example, when the heat pump water heating system in the water heating product is used for a long time, the heat pump water heating system will fail, such as water scale accumulation, freezing, and water valve closing. And abnormal conditions such as bent water pipes, which lead to blockage of the waterway of the heat pump water heating system, thus affecting the heating effect of the water heating products. In order to ensure the reliability of the heat pump water heating system, it is necessary to detect the working status of the heat pump water heating system in time for timely maintenance and repair. [0003] However, since the water pump in the existing heat pump wat...
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IPC IPC(8): F24D19/10
CPCF24D19/1006F24D2200/12
Inventor 孙铁军徐磊李义军李丛来潘奎
Owner QINGDAO HISENSE HITACHI AIR CONDITIONING SYST