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Compressor cylinder cutting control method, device and unit and air conditioning system

A technology for air conditioning systems and compressors, applied in heating and ventilation control systems, compressors, compressors with reversible cycles, etc., can solve problems such as failure to cut cylinders, and achieve the effect of ensuring energy efficiency and improving user experience.

Active Publication Date: 2019-01-11
GREE ELECTRIC APPLIANCES INC
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] Embodiments of the present invention provide a method, device, unit, and air conditioning system for controlling compressor cut-off to solve the problem in the prior art of failure of cut-off due to the system pressure difference failing to meet the condition for cut-off of the compressor

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  • Compressor cylinder cutting control method, device and unit and air conditioning system
  • Compressor cylinder cutting control method, device and unit and air conditioning system
  • Compressor cylinder cutting control method, device and unit and air conditioning system

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Embodiment Construction

[0041] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention.

[0042] In the following description, the use of suffixes such as “module”, “part” or “unit” used to indicate elements is only for facilitating the description of the present invention, and has no specific meaning in itself. Therefore, "module", "part" or "unit" can be used in a mixed manner.

[0043] When the unit is in a special environment, for example, when the unit is in the start-up phase of ultra-low temperature heating, the compressor often cannot switch from single-cylinder operation mode to double-cylinder operation mode. This is because the system pressure difference at this time is small and the rising speed is relatively slow, and the system pressure difference v...

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Abstract

The invention discloses a compressor cylinder cutting control method, device and unit and an air conditioning system. The method comprises the following steps that a compressor is switched from a single-cylinder operation state to a double-cylinder operation state; whether the system pressure difference is in a first preset system pressure difference interval is judged; if no, system control parameters are adjusted so that the system pressure difference can be in the first preset system pressure difference interval; the compressor is controlled to be switched from the single-cylinder operationstate to the double-cylinder operation state; when the system differential pressure meets system pressure difference conditions required by the double-cylinder operation state of the compressor, thatis, the system pressure difference is in the first preset system pressure difference interval, the compressor is controlled to be switched from a single-cylinder operation state to a double-cylinderoperation state. The system pressure difference is stable, the compressor can be stably maintained in the double-cylinder operation state, energy efficiency of the unit is guaranteed, and user experience is improved.

Description

Technical field [0001] The present invention relates to the technical field of units, and in particular to a method, a device for controlling a compressor to cut cylinders, a unit and an air conditioning system. Background technique [0002] At present, in order to solve the problems of low load and poor energy efficiency of multi-line groups, the single and double cylinder switching technology of the compressor has been developed. In the actual operation of the unit, the failure of the compressor to cut cylinders is more common. For example: When the unit is in the ultra-low temperature heating start phase (the ambient temperature is extremely low), the compressor often cannot be switched to two-cylinder operation. Another example: in the process of compressor cylinder cutting, due to changes in components such as the fan and electronic expansion valve in the unit, it is likely to affect the normal cylinder cutting of the compressor. The above conditions will cause the compres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B27/24F24F11/64F24F11/86F25B49/02
CPCF04B27/24F24F11/64F24F11/86F25B49/022F25B2600/02F25B2400/077F25B2400/074F04B49/065F25B13/00F25B2600/0261F25B2700/1931F25B2700/1933F24F11/77F24F11/84F24F11/65F04B2201/0807F04B27/005Y02B30/70F25B41/31F04B49/06F04D27/004
Inventor 刘华刘群波许克李龙飞戎耀鹏
Owner GREE ELECTRIC APPLIANCES INC
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