A heat pump defrosting judgment method and system
A technology of heat pumps and heat pump units, applied in heating and ventilation control systems, heating and ventilation safety systems, lighting and heating equipment, etc., can solve the problems of low defrosting accuracy
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no. 1 example
[0081] See figure 1 , the first embodiment of the present invention provides a method for judging defrosting of a heat pump, at least including the following steps:
[0082] S1. When the heat pump unit is turned on and running, obtain the branch temperature difference change data in the heat pump unit; wherein, the branch temperature difference change data includes the branch temperature difference obtained at each preset recording time interval and multiple consecutive groups of the branch points. The temperature difference change value between the road temperature difference;
[0083] S2. Judging whether the heat pump unit satisfies the conditions for entering the defrosting mode according to the branch temperature difference change data;
[0084] S3. When the conditions for entering the defrosting mode are met, the defrosting mode is started.
[0085] In this embodiment, by judging whether to enter defrosting according to the change data of the branch temperature differen...
no. 2 example
[0103] In the second embodiment of the present invention, when the heat pump unit is a dual-system heat pump unit, the heat pump unit includes a first system and a second system; The branch temperature difference obtained at the preset recording time and the temperature difference change value between multiple sets of the branch temperature difference, and the branch temperature difference obtained at each interval of the preset recording time of the second system and the multiple sets of the branch temperature difference The temperature difference change value between the road temperature difference;
[0104] The judging whether the heat pump unit satisfies the conditions for entering the defrosting mode according to the branch temperature difference change data is specifically:
[0105] According to the branch temperature difference change data, calculate and obtain the temperature difference change value among the three consecutive groups of the branch temperature differenc...
no. 3 example
[0146] The third embodiment of the present invention provides a heat pump defrosting judging device, including a controller for executing the heat pump defrosting judging method, and the controller is used for:
[0147] When the heat pump unit is turned on and running, the branch temperature difference change data in the heat pump unit is obtained; wherein, the branch temperature difference change data includes the branch temperature difference obtained at each preset recording time interval and multiple consecutive sets of the branch temperature difference The temperature difference change value between;
[0148] judging whether the heat pump unit satisfies the conditions for entering the defrosting mode according to the branch temperature difference change data;
[0149] When the conditions for entering the defrosting mode are satisfied, the defrosting mode is started.
[0150] The controller is also used to:
[0151] According to the temperature difference change data of ...
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