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Multi-connected air conditioner operation control method and device

A multi-connected air conditioning and operation control technology, applied in the control input of air characteristics, space heating and ventilation control input, heating and ventilation control system, etc. and other problems to achieve the effect of preventing air leakage

Active Publication Date: 2019-03-08
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Usually, when the outdoor unit is started, due to the low pressure difference between the high-pressure side refrigerant and the low-pressure side refrigerant of the air conditioner, it is easy to cause the four-way valve to fail to reversing normally, which brings great hidden dangers to the reliability of the system.

Method used

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  • Multi-connected air conditioner operation control method and device
  • Multi-connected air conditioner operation control method and device
  • Multi-connected air conditioner operation control method and device

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no. 1 example

[0053] Further, refer to figure 2 , based on the first embodiment of the method for controlling the operation of a multi-connected air conditioner in the present invention, in the second embodiment of the method for controlling the operation of a multi-connected air conditioner in the present invention, the up-frequency processing of the compressor of the outdoor unit includes:

[0054] Step S41, after controlling the compressor to increase to the first operating frequency to run for a second preset time period, determine whether the third pressure value of the refrigerant pressure on the high-pressure side of the air conditioner currently detected is less than the second preset value; if so, execute Step S42, otherwise execute step S43;

[0055] Step S42, controlling the compressor to increase again to the second operating frequency to run for a third preset time period, controlling the throttling component of the outdoor unit to increase to the first preset opening degree, ...

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Abstract

The invention discloses an operation control method for a multi-split air conditioner. The operation control method for the multi-split air conditioner includes the following steps that when an outdoor unit is started, a compressor is controlled to operate for a first preset time period according to the initial frequency; a first pressure value of refrigerant pressure at the high-pressure side of the air conditioner is detected within the first preset time period; whether frequency increase of the compressor is needed or not is judged according to the first pressure value; and when frequency increase of the compressor is needed, the frequency of the compressor of the outdoor unit is increased, so that the refrigerant pressure at the high-pressure side of the air conditioner is increased before reversing of a four-way valve. The invention further discloses an operation control device for the multi-split air conditioner. By means of the method and device, the reliability of operation of the multi-split air conditioner is improved.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a method and device for controlling the operation of multi-connected air conditioners. Background technique [0002] At present, the multi-connected cooling and heating air-conditioning external unit system generally has one or more than two four-way valves. Usually, when the outdoor unit is started, due to the low pressure difference between the high-pressure side refrigerant and the low-pressure side refrigerant of the air conditioner, it is easy to cause the four-way valve to fail to reversing normally, which brings great hidden dangers to the reliability of the system. Contents of the invention [0003] The main purpose of the present invention is to provide a method and device for controlling the operation of a multi-connected air conditioner, aiming at improving the reliability of the operation of a multi-connected air conditioner. [0004] In order to achieve t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/64F24F11/61F24F11/70
CPCF24F11/30F24F11/62F24F11/64F24F11/70F24F2110/00
Inventor 任林行许永锋熊美兵马熙华赵增毅
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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