Air-cooled heat pump chiller and hot water unit and its defrosting control method
A technology of hot and cold water units and air-cooled heat pumps, applied in the field of air conditioning, can solve problems affecting the overall capacity, water temperature, and user experience, and achieve the effects of reducing heating attenuation, improving user experience, and improving heating effects
Active Publication Date: 2018-09-07
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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- Application Information
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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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[0024] 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.
[0025] The defrosting control method of the air-cooled heat pump chiller and hot water unit according to the embodiments of the present invention and the air-cooled heat pump chiller and hot water unit are described below with reference to the accompanying drawings.
[0026] combine figure 1 with figure 2 As shown, the air-cooled heat pump chiller and hot water unit according to an embodiment of the present invention includes N modular machines, N is an integer greater than or equal to 2, and the outlet pipe of each modular mac...
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The invention discloses an air cooled heat pump water chiller-heater unit and a defrosting control method thereof. The method comprises the following steps that the outdoor environment temperature T4, and inlet water temperatures and outlet water temperatures corresponding to all module machines are detected in real time; the temperature difference of inlet water and outlet water of each module machine is obtained; when it is judged that the unit operates in an alternating defrosting mode according to T4, at least one module machine is controlled to be started, and at least one module machine is kept in a halt state; and the any started module machine and the any module machine in the halt state are controlled to operate in an alternating heating mode according to the temperature difference of inlet water and outlet water corresponding to the any started module machine and the temperature difference of inlet water and outlet water corresponding to the any module machine in the halt state, and a fan of the any started module machine and a fan of the any module machine in the halt state are kept to operate continuously, so that defrosting is carried out through forced-convection heat transfer of the fans. Accordingly, the module machines are switched so as to carry out defrosting through continuous operation of the fans, the heating effect of the air cooled heat pump water chiller-heater unit is improved, and user experience is improved.
Description
technical field [0001] The invention relates to the technical field of air conditioning, in particular to a defrosting control method of an air-cooled heat pump chiller and hot water unit and an air-cooled heat pump chiller and hot water unit. 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 change...
Claims
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IPC IPC(8): F25B47/02F25B49/02
Inventor 何理李钱生谯愚魏贺庆
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD