Air-cooled heat pump cold and hot water machine and its defrosting control method
A technology of hot and cold water machines and air-cooled heat pumps, applied in the field of air conditioning, can solve problems affecting user experience, water temperature, and overall machine capabilities, and achieve the effects of improving heating effects, reducing heating attenuation, and improving user experience
Active Publication Date: 2017-10-31
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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Problems solved by technology
It can be seen that the defrosting process is a cooling process, which will affect the water temperature, thereby affecting the overall capacity and user experience.
Method used
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[0022] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0023] The defrosting control method of the air-cooled heat pump chiller and hot water machine and the air-cooled heat pump chiller and hot water machine according to the embodiments of the present invention will be described below with reference to the accompanying drawings.
[0024] likefigure 1 As shown, the air-cooled heat pump cold and hot water machine according to an embodiment of the present invention includes a first heating water system and a second heating water system, wherein the first air conditioner heat exchanger a...
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The invention discloses an air-cooled heat pump cold and hot water machine and a defrosting control method thereof, wherein the air-cooled heat pump cold and hot water machine includes first and second water heating systems, and the first water heating system in the first water heating system The air-conditioning heat exchanger and the second air-conditioning heat exchanger in the second heating water system share a fan, and the method includes the following steps: real-time detection of the outdoor ambient temperature T4, the low-pressure side pressure of the first heating water system and the pressure of the second heating water system. The low-pressure side pressure of the hot water system; get the △Pa of the first heating water system and the △Pb of the second heating water system; judge according to T4 when the air-cooled heat pump cold and hot water machine is running in the mode of defrosting in rotation, then according to △ Pa and △Pb control the alternate heating operation of the first heating water system and the second heating water system, so as to defrost the heat exchanger of the air conditioner that is not in the heat exchange working state through the continuous operation of the fan. In the method, the continuous operation of the fan is used to defrost by switching between the systems, thereby improving the heating effect of the air-cooled heat pump cold and hot water machine, and improving user experience.
Description
technical field [0001] The invention relates to the technical field of air conditioners, in particular to a defrosting control method for an air-cooled heat pump cold and hot water machine and an air-cooled heat pump cold and hot water machine. Background technique [0002] For the air heat pump air conditioner, it needs to absorb heat from the air during heating operation, but the change of ambient temperature will cause the heat exchanger on the air conditioner side to frost, which will reduce the heating capacity and energy efficiency of the air heat pump air conditioner. In order to avoid the deterioration of the heating effect, the air heat pump air conditioner will run the defrost mode for defrosting, and the defrost mode cannot be used for heating, which will eventually have a great impact on the overall heating effect. [0003] In the related technology, when the air heat pump air conditioner is in the defrosting process, the compressor runs, the four-way valve chang...
Claims
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IPC IPC(8): F25B49/02F25B47/02F25B29/00
Inventor 李钱生谯愚魏贺庆何理
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD