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Air conditioner control method and system based on volume switching and air conditioning equipment

A control method and technology for a control system, which are applied in the field of air conditioners, can solve problems such as system pressure difference fluctuations and affect the reliability of double-cylinder operation, and achieve the effect of improving reliability.

Active Publication Date: 2019-01-08
GREE ELECTRIC APPLIANCES INC
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Problems solved by technology

[0003] In the actual use process, it is found that when the unit is running in the dual-cylinder heating mode, the system pressure difference fluctuates greatly after entering the defrosting mode and after the defrosting mode ends, which affects the reliability of the dual-cylinder operation

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  • Air conditioner control method and system based on volume switching and air conditioning equipment
  • Air conditioner control method and system based on volume switching and air conditioning equipment
  • Air conditioner control method and system based on volume switching and air conditioning equipment

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[0035] The present invention will be described in detail below. In the following paragraphs, different aspects of the embodiments are defined in more detail. Aspects so defined may be combined with any other aspect or aspects unless specifically stated otherwise. In particular, any feature considered to be preferred or advantageous may be combined with one or more other features which are considered to be preferred or advantageous.

[0036] Terms such as "first" and "second" appearing in the present invention are only for convenience of description, to distinguish different components with the same name, and do not indicate a sequence or a primary and secondary relationship.

[0037] The inventor found that when the unit in the prior art is operating in the dual-cylinder heating mode, the reversing of the four-way valve will cause large fluctuations in the pressure difference of the system when it enters the defrosting and after the defrosting ends, affecting the reliability ...

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Abstract

The invention relates to an air conditioner control method and system based on volume switching and air conditioning equipment. The control method comprises the following steps that working mode information of an air conditioner is acquired; whether the air conditioner in the heating mode needs to enter a defrosting mode is judged, if the air conditioner in the heating mode needs to enter the defrosting mode, firstly, an on-off valve arranged between a volume switching port (1A) of a compressor (1) and a reversing valve (11) is switched off, and then the reversing valve (11) is used for switching to the defrosting mode; after the air conditioner enters the defrosting mode, whether the defrosting mode is finished is judged; and if the defrosting mode is finished, firstly, the reversing valve (11) is used for switching to the heating mode, and then the on-off valve is switched on. According to the control method, the influence on pressure of the volume switching port in the defrosting process can be avoided, pre-closed high-pressure air can enable the volume switching port to reach the volume switching pressure condition required by the normal heating mode in a short time, so that the compressor is guaranteed to operate normally during switching of the working modes and get free of influence of system differential pressure fluctuation, and the operation reliability of the systemis improved.

Description

technical field [0001] The present invention relates to the technical field of air conditioning, in particular to an air conditioning control method, system and air conditioning equipment based on volume switching. Background technique [0002] Compared with the ordinary multi-line, the multi-line based on the volume switching of large and small cylinders, the compressor adopts the design of large and small cylinders, and the large cylinder can be unloaded. The compressor operates with two cylinders under medium and high loads, and the compressor operates with a single cylinder under low loads. Change the pressure of the variable capacity port of the compressor through the high and low pressure solenoid valves to switch between single and double cylinders. When the high pressure solenoid valve is opened, the variable capacity port is connected to high pressure, and the compressor operates in two cylinders. When the low pressure solenoid valve is opened, the variable capacity ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/64F24F11/84F24F11/86F24F11/67
CPCF24F11/64F24F11/67F24F11/84F24F11/86
Inventor 戎耀鹏许克刘群波倪毅李龙飞
Owner GREE ELECTRIC APPLIANCES INC
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