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Constant-frequency air conditioning system and control method thereof

A technology of air conditioning system and control method, applied in the direction of control input related to air characteristics, space heating and ventilation control input, heating and ventilation control system, etc., to achieve the effect of improving comfort and reducing design cost

Inactive Publication Date: 2017-03-22
GUANGZHOU HUALING REFRIGERATION EQUIP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in order to solve the problem that the fixed-frequency air-conditioning system realizes the adjustment of cooling capacity output by frequently stopping and starting the compressor, resulting in large fluctuations in indoor temperature and poor user comfort

Method used

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  • Constant-frequency air conditioning system and control method thereof
  • Constant-frequency air conditioning system and control method thereof

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Embodiment 1

[0029] Such as figure 1 As shown, the present invention provides a fixed-frequency air-conditioning system, including: a refrigeration or heating circuit composed of a compressor 1, a four-way valve, a condenser 2, a throttling element, and an evaporator 4; the compressor 1 includes A first compression chamber and a second compression chamber that can be opened simultaneously or separately, the inlets of the first compression chamber and the second compression chamber are respectively provided with a first valve 11 and a second valve 12 electrically connected to the electronic control unit; The electronic control unit is also connected with a data collection module for collecting the indoor temperature and the set temperature of the air conditioning system. The compressor 1 has two compression chambers that can be opened simultaneously or separately. The opening states of the two compression chambers are respectively controlled by the first switch and the second switch at the ...

Embodiment 2

[0034] The present invention also provides a control method of the fixed-frequency air-conditioning system as described in Embodiment 1, which includes the following steps:

[0035] During the operation of the fixed-frequency air-conditioning system, the current indoor temperature Tr is obtained and compared with the set temperature Ts:

[0036] If |Tr-Ts|>Ta, both the first valve and the second valve are opened, and the compressor runs;

[0037] If Ta≥|Tr-Ts|>Tb, the first valve is opened, the second valve is closed, and the compressor runs;

[0038] If Tb≥|Tr-Ts|>Tc, the first valve is closed, the second valve is opened, and the compressor runs;

[0039] If Tc≥|Tr-Ts|, both the first valve and the second valve are closed, and the compressor does not run.

[0040]Both the indoor temperature Tr and the set temperature Ts are collected by the data acquisition module; since the air conditioner can realize both cooling and heating, when the air conditioner operates in cooling m...

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Abstract

The invention belongs to the technical field of an air conditioner and discloses a constant-frequency air conditioning system and a control method thereof. In the constant-frequency air conditioning system, a compressor is set to comprise two compression chambers which can be opened independently or opened simultaneously; the compressor is also provided with a data acquisition module used for acquiring an indoor temperature and a set temperature in real time; by adopting the constant-frequency air conditioning system, cold output or heat output can be automatically adjusted according to thermal load demands so that influences, on comfort, of the indoor temperature affected by frequent start and shutdown can be prevented; and meanwhile, compared with a variable-frequency air conditioner, the constant-frequency air conditioning system is greatly lowered in design cost and is greatly improved in comfort. According to the control method of the constant-frequency air conditioning system provided by the invention, air conditioning load is determined according to an absolute value of the difference value of the indoor temperature and the set temperature, the difference value is divided into different ranges, and the compressor adopts different output combination in different range states so as to work at different output power; and in a working process of the air conditioner, the indoor temperature fluctuation is small and the use comfort is high.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a fixed frequency air conditioner system and a control method thereof. Background technique [0002] The traditional fixed-frequency air-conditioning system only has two states of on and off. In the cooling state, when the cooling capacity provided by the air-conditioning system is too much, the compressor stops; when the indoor temperature exceeds the set temperature, the compressor starts. machine to adjust. That is to say, the compressor of the fixed-frequency air-conditioning system is either on or off, and cannot be flexibly adjusted through changes in the heat load. Frequent start-up and stop-off will cause large fluctuations in room temperature, hot and cold, and poor user comfort. Contents of the invention [0003] (1) Technical problems to be solved [0004] The technical problem to be solved by the present invention is: in order to solve the problem that th...

Claims

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Application Information

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IPC IPC(8): F25B1/00F25B41/04F25B41/06F25B49/02F24F11/00F25B41/20F25B41/34F25B41/37
CPCF24F11/30F24F11/70F24F2110/10F25B1/00F25B49/02F25B2400/07F25B41/31F25B41/20Y02B30/70
Inventor 韦汉儒李金波李杏党杨晓东
Owner GUANGZHOU HUALING REFRIGERATION EQUIP
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