Control method for pressure balance of heat pump air conditioner

A technology of balance control and heat pump air-conditioning, which is applied in the direction of refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of increased reliability risks and increased costs of the air-conditioning system space, to improve frequent start-up performance and reliability, reduce The effect of starting resistance

Inactive Publication Date: 2010-06-16
四川长虹空调有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] By adding a bridge device between the high and low pressure sides of the air conditioning system that can control its on-off, the system pressure can be quickly and effectively balanced, but it is obvious that the added bridge device is independent of the original air conditioning system Additional components, it not only adds additional risks to the air conditioning system in terms of space and reliability, but also the increased cost is obvious

Method used

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  • Control method for pressure balance of heat pump air conditioner
  • Control method for pressure balance of heat pump air conditioner
  • Control method for pressure balance of heat pump air conditioner

Examples

Experimental program
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Embodiment 1

[0028] When the compressor works during the refrigeration process, the controller 5 turns off the coil 4. At this time, the slider 6 is located at the left end of the main valve body 2, and the first refrigerant port 7 communicates with the third refrigerant port 9 (the third refrigerant port at this time) 9 is connected to the heat exchanger of the outdoor unit), therefore, when the compressor stops during the refrigeration process, the controller 5 energizes the coil 4 so that the slider 6 is located at the right end of the main valve body 2, and the first refrigerant port 7 is connected to the second The four refrigerant ports 10 are connected; while the compressor is working during heating, the controller 5 energizes the coil 4, the slider 6 is located at the right end of the main valve body 2, and the first refrigerant port 7 communicates with the fourth refrigerant port 10, so When the compressor stops during the heating process, the controller 5 de-energizes the coil 4 so...

Embodiment 2

[0030] When the compressor is working during the refrigeration process, the controller 5 energizes the coil 4. At this time, the slider 6 is located at the right end of the main valve body 2, and the first refrigerant port 7 communicates with the fourth refrigerant port 10 (at this time, the fourth refrigerant port 10 It is connected to the heat exchanger of the outdoor unit), therefore, when the compressor stops during the cooling process, the controller 5 turns off the coil 4, makes the slider 6 located at the left end of the main valve body 2, and makes the first refrigerant port 7 and the second The three refrigerant ports 9 are connected; while the compressor is working during heating, the controller 5 turns off the coil 4, the slider 6 is located at the left end of the main valve body 2, and the first refrigerant port 7 communicates with the third refrigerant port 9, so When the compressor stops during heating, the controller 5 energizes the coil 4, so that the slider 6 is...

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Abstract

The invention discloses a control method for the pressure balance of a heat pump air conditioner, which can enhance the control reliability of the pressure balance of an air-conditioning system. In the control method for the pressure balance of the heat pump air conditioner, a coil is switched on or switched off by a controller when a compressor works in a refrigeration process; when the compressor works in a heating process, the controller enables the switching-on / switching-off state of the coil to be opposite to that of the coil when the compressor carries out the refrigeration operation; when the compressor stops in the refrigeration process, the controller enables the switching-on / switching-off state of the coil to be same as the switching-on / switching-off state of the coil when the compressor works in the heating process; and when the compressor stops in the heating process, the controller enables the switching-on / switching-off state of the coil to be same as the switching-on / switching-off state of the coil when the compressor works in the refrigeration process. The flow directions of high-pressure and low-pressure cooling media in the system are switched by controlling an electromagnetic cross joint reversing valve used by the heat pump air conditioner per se, the pressure of the high-pressure and low-pressure cooling media of the air-conditioning system is effectively balanced in the stop / start process of the compressor, and the invention is especially suitable for popularization and application on the heat pump air conditioner.

Description

Technical field [0001] The invention relates to a heat pump air conditioning system, in particular to a pressure balance control method of the heat pump air conditioner. Background technique [0002] At present, the pressure balance of the air-conditioning system mainly refers to the pressure self-balancing process of the high-pressure side and the low-pressure side of the air-conditioning system during the reciprocating cycle of frequent start and stop of the air-conditioning compressor. Its function is to keep the starting torque of the compressor reliable. Within the range, especially in harsh environments and low-voltage starting conditions, the compressor's starting torque itself is very demanding. Therefore, the balance speed and effect of the high and low pressures of the air conditioning system are crucial to the compressor's starting performance and long-term stable operation. Significance. At present, there are two main pressure balancing methods for air conditioning s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B49/02
Inventor 李峰杨涛
Owner 四川长虹空调有限公司
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