Air-cooled heat pump cold and hot water machine and its protection method against high pressure

A technology of hot and cold water machines and air-cooled heat pumps, applied in heat pumps, refrigerators, damage protection, etc., to achieve the effects of avoiding damage, improving user experience, and preventing high-pressure protection

Active Publication Date: 2017-07-28
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the existing air-cooled heat pump chiller and hot water unit defrost, due to the existence of the refrigerant, the low-pressure heat transfer performance is good, so it is extremely prone to high-voltage protection

Method used

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  • Air-cooled heat pump cold and hot water machine and its protection method against high pressure
  • Air-cooled heat pump cold and hot water machine and its protection method against high pressure
  • Air-cooled heat pump cold and hot water machine and its protection method against high pressure

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Embodiment Construction

[0019] 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.

[0020] The following describes the high-voltage protection method for an 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 with reference to the accompanying drawings.

[0021] figure 1 It is a flow chart of an air-cooled heat pump hot and cold water machine protection method against high pressure according to an embodiment of the present invention, wherein the air-cooled heat pump cold and hot water machine includes ...

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PUM

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Abstract

The invention discloses a high-voltage protection method for an air-cooled heat pump cold and hot water machine and an air-cooled heat pump cold and hot water machine with the same. The method includes the following steps: detecting the outdoor environment temperature and the water outlet temperature of the water outlet; The allowable maximum value Imax of the current I of the compressor and the maximum value ΔImax of the difference between the maximum current and the minimum current of the currents of the N compressors △I; during the defrosting action, each heating The outlet temperature T3 of the air-cooled heat exchanger in the water system; when there is T3 that has not reached the preset defrosting exit value and △I is greater than or equal to △Imax, if there is I greater than or equal to Imax, then control the I greater than or equal to Imax The corresponding compressor is shut down to prevent high pressure protection of the compressor. The method can effectively prevent the high pressure protection of the compressor during the defrosting action, thereby improving user experience.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a high-voltage protection 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] The air-cooled heat pump chiller and hot water unit is a small and medium-sized central air conditioner with air as the cooling source or heat source. It uses the refrigerant as the cooling medium to exchange heat with water, and the cooled or heated water is converted into the required area through secondary heat exchange. Provides cooling or heat. [0003] When the existing air-cooled heat pump chiller and hot water unit defrost, due to the existence of the brine, the low-pressure heat exchange performance is good, so it is extremely easy to have high-pressure protection. Contents of the invention [0004] The present invention aims to solve one of the technical problems in the related art at le...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B47/02F25B30/02F25B49/02
Inventor 李钱生
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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