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Draught fan control method of heat pump operation

A technology for controlling rooms and outdoor fans, applied in heating and ventilation control systems, heating methods, space heating and ventilation, etc., can solve problems such as compressor risks, improve operating efficiency, and ensure effective heating operation

Active Publication Date: 2013-06-19
YORK WUXI AIR CONDITIONING & REFRIGERATION CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is no small risk for damage from the compressor
[0006] Therefore, there is a need for a reasonable fan control method, which can solve the above-mentioned risk caused by the phenomenon of sucking liquid in the process of switching from defrosting mode to heating mode to the compressor

Method used

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  • Draught fan control method of heat pump operation
  • Draught fan control method of heat pump operation
  • Draught fan control method of heat pump operation

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Embodiment Construction

[0032] The objects and functions of the present invention and methods for achieving the objects and functions will be clarified by referring to the exemplary embodiments. However, the present invention is not limited to the exemplary embodiments disclosed below; it can be implemented in various forms. The essence of the description is only to help those skilled in the relevant art comprehensively understand the specific details of the present invention.

[0033] figure 1 A block diagram schematically shows the working principle of the heat pump system according to the present invention. The heat pump system 100 includes a first heat exchanger 101 , a compressor 102 , a four-way valve 103 , an outdoor fan 104 , a throttling device 105 and a second heat exchanger 106 . The first heat exchanger 101 , the compressor 102 , the four-way valve 103 , the outdoor fan 104 , the throttling device 105 and the second heat exchanger 106 are connected through circulation pipelines. The se...

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Abstract

The invention provides a method used for a heat pump system to control an outdoor draught fan. The heat pump system comprises a compressor, a four-direction valve, an outdoor coiler, the outdoor draught fan, a throttling device and a heat exchanger, wherein the compressor, the four-direction valve, the outdoor coiler, the outdoor draught fan, the throttling device and the heat exchanger are connected through a circulation line. The draught fan control method comprises the following steps: (a) a controller of the heat pump system issues a reversing order to instruct the four-direction valve to switch from a defrosting mode to a heating mode; (b) after receiving the reversing order, the four-direction valve conducts the switch action by switching from the defrosting mode to the heating mode; and (c) after the four-direction valve completes the switch, the outdoor draught fan is powered on and started to operate. The draught fan control method of the heat pump system can be suitable for a control process of the heat pump system switching from the defrosting mode to the heating mode. Normal operation of the compressor is guaranteed. The condition that heat on the coiler is blown away due to the premature operation of the draught fan can not occur. Most of the heat on the coiler can be recycled into the system so that operation efficiency of the system can be improved.

Description

technical field [0001] The invention relates to an outdoor fan control technology for an air conditioner, in particular to a fan control method during and after switching from a defrosting mode to a heating mode during a heat pump operation. Background technique [0002] An air source heat pump is a device that transfers thermal energy from a low-temperature heat source (such as air) to a high-temperature heat source. In cold weather conditions, during the heating process of the heat pump, the coil of the air source heat pump is prone to frost, which is extremely unfavorable to the normal heating of the entire air source heat pump unit. In order to solve the problem that the coils of air source heat pump units are prone to frosting in low temperature environments, the four-way valve reversal is usually used in heat pump air conditioners to solve the problem of defrosting. When defrosting is required, the air source heat pump switches the system from heating mode to cooling ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00
Inventor 李静刘远辉
Owner YORK WUXI AIR CONDITIONING & REFRIGERATION CO LTD
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