Control method and system for starting defrosting mode through heat pump system
A technology of heat pump system and control method, which is applied in the direction of heating mode, heating and ventilation control system, heating and ventilation safety system, etc., and can solve frequent defrosting, failure of external unit temperature sensor bulb, preset temperature difference value, and unreasonable setting and other problems to achieve the effect of improving accuracy and reducing the unreasonable setting of preset temperature difference
Inactive Publication Date: 2017-02-15
GREE ELECTRIC APPLIANCES INC
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[0005] In view of this, the present invention discloses a control method and system for turning on the defrosting mode of a heat pump system, so as to solve the problem of mis-defrosting and frequent defrosting caused by the failure of the temperature sensing package of the external unit and / or the unreasonable setting of the preset temperature difference value. Frost, failure to defrost in time, etc.
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[0059] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0060] The embodiment of the invention discloses a control method and system for turning on the defrosting mode of a heat pump system, so as to solve the problem of malfunction of the external temperature sensing bulb and / or unreasonable setting of the preset temperature difference value, which leads to misdefrosting and frequent defrosting , Failure to defrost in time, etc.
[0061] See figure 1 , The embodiment of the present invention d...
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The invention discloses a control method and system for starting the defrosting mode through a heat pump system. According to the control method and system, whether the temperature of an outdoor coil, the outdoor environment temperature and operating power of a windscreen of an outdoor unit meet corresponding judgment conditions or not is judged; and the frosting condition of the outdoor unit is judged, and thus whether the defrosting mode is started through the heat pump system or not is determined. Compared with existing technical schemes, according to the control method and system, judgment on operating power of the outdoor unit is added, the situations that due to a temperature-sensing bulb of the outdoor unit has failure and / or the preset temperature value is set unreasonably, unintended defrosting is conducted, defrosting is conducted frequently, and defrosting is not conducted in time are effectively reduced, and thus accuracy of judgment for starting the defrosting mode through the heat pump system is improved.
Description
Technical field [0001] The present invention relates to the technical field of air conditioning control, and more specifically, to a control method and system for turning on a defrosting mode of a heat pump system. Background technique [0002] The heat pump system of the air conditioning system includes a cooling mode and a heating mode. When the heat pump system is in the heating mode, if the outdoor unit is frosted due to low outdoor ambient temperature and high humidity, it will affect the indoor heat acquisition. When the frost layer is very thick, it will also affect the operation of the outdoor fan, and even cause the outdoor fan to jam. Therefore, when the heat pump system is in heating mode, in many cases the defrost mode needs to be turned on. [0003] The existing heat pump system judges whether to turn on the defrosting mode: when the outdoor ambient temperature is in a certain temperature range, the difference between the outdoor ambient temperature and the outdoor co...
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Inventor 李晓群刘湘
Owner GREE ELECTRIC APPLIANCES INC