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A control method based on the temperature drop rate to control the start and stop of the crankshaft heating belt

A heating belt and crankshaft technology, which is applied in the field of control based on the temperature drop rate to control the start and stop of the crankshaft heating belt, can solve problems such as energy waste, and achieve the effects of reducing energy consumption, prolonging service life, and reducing energy waste

Active Publication Date: 2020-07-28
广东高而美制冷设备有限公司
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

If the crank heating belt is controlled by the ambient temperature and the start and stop of the main engine, it may cause the crank heating belt to be turned on hundreds of hours before the main engine is turned on, which will cause energy waste

Method used

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  • A control method based on the temperature drop rate to control the start and stop of the crankshaft heating belt

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with specific examples.

[0018] See attached figure 1 As shown, in this embodiment, a crankshaft heating belt control method is jointly controlled by multiple temperature detections. The start or stop of the heating belt can reduce the energy consumption of the heating belt of the crankshaft and prolong the service life of the compressor.

[0019] In order to ensure the normal operation of the air-conditioning heat pump system in a low temperature environment, the control system sets the ambient temperature as the prerequisite for starting the crank heating belt; The temperature value of the water temperature is set as one of the necessary conditions for the crankshaft heating belt to be turned on; in order to prevent the crankshaft heating belt from being turned off prematurely after the compressor is started, resulting in compressor liquid return or freezing oil viscosity, the control system contro...

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Abstract

The invention discloses a control method for controlling a heating strip of a crankshaft to start and stop based on the temperature drop rate. The heating strip of the crankshaft is controlled to start or stop by means of the environment temperature Tr, the water temperature drop rate deltat, the water temperature Tw and the exhaust temperature Tq of a compressor jointly. The heating strip of thecrankshaft is controlled to start or stop by means of the environment temperature, the water temperature and the exhaust temperature of the compressor, so that the heating strip of the crankshaft is prevented from being started for a long time or too early, energy waste is reduced, liquor return of a compressor or increase of refrigerant oil resistance of the compressor due to too early stop of the heating strip of the crankshaft is prevented, and the service life of the compressor is prolonged.

Description

technical field [0001] The invention relates to the technical field of an air-conditioning heat pump system, in particular to a control method for controlling the start and stop of a crankshaft heating belt based on a temperature drop rate. Background technique [0002] The existing air-conditioning heat pump system controls the operation of the crankshaft heating belt through the ambient temperature and the start or stop of the compressor. When the ambient temperature is lower than a certain value, the compressor starts, and the crankshaft heating belt is turned off; the compressor is turned off, and the crankshaft heating belt is turned on, in order to keep the compressor refrigeration oil at a certain temperature. Turn off the heating belt of the crankshaft when the compressor is started, if the discharge temperature and suction temperature of the compressor are too low, there will be defects such as compressor liquid return or increased resistance of the refrigerated oil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24H4/02F24H9/18F24H9/20F25B30/02F25B49/02
CPCF24H4/02F24H9/1809F24H9/2007F25B30/02F25B49/022
Inventor 杨杰汤志均招就权施永康孙军
Owner 广东高而美制冷设备有限公司
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