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Air conditioning system control method and device

An air-conditioning system and control method technology, which is applied in the direction of air-conditioning systems, control/regulation systems, and control inputs involving air characteristics, etc., can solve problems such as the inability to effectively control the air supply volume of the air-conditioning system, and improve user experience and air supply volume. reasonable effect

Active Publication Date: 2018-08-07
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides an air conditioning system control method and device to at least solve the problem in the related art that the air supply volume of the air conditioning system cannot be effectively controlled

Method used

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  • Air conditioning system control method and device
  • Air conditioning system control method and device

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Experimental program
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Embodiment 1

[0024] In this embodiment, in order to realize the energy saving of the air conditioning system, the operating frequency of the compressor is controlled by the air supply temperature, and the target value of the air supply temperature is related to the frequency of the compressor and the operating evaporation temperature of the compressor. The operating frequency of the air supply fan is controlled by the return air temperature, and the temperature set by the user is achieved by controlling the return air temperature.

[0025] In one case, the air conditioning system involved in this embodiment may include: a magnetic levitation centrifugal compressor, a water-cooled condenser, an electronic expansion valve, a direct evaporative finned evaporator, and a variable frequency blower fan. The sensors may include: a high-pressure pressure sensor, a low-pressure pressure sensor, an indoor ambient temperature sensor, a supply air temperature sensor, a cooling water inlet temperature se...

Embodiment 2

[0049] This embodiment will respectively describe the control process of controlling the air conditioning system by adjusting the operating frequency of the compressor and controlling the air conditioning system by adjusting the operating frequency of the fan.

[0050] Figure 4 shows the process of controlling the air conditioning system by adjusting the operating frequency of the compressor, as Figure 4 As shown, the control process includes:

[0051] When the following conditions are met at the same time, the compressor performs frequency increase control, that is, the compressor is controlled to increase the operating frequency on the basis of the current operating frequency.

[0052] Condition 1: supply air temperature Ts > target supply air temperature Tm + supply air temperature deviation △Ts; this condition 1 aims to control the supply air temperature to achieve the optimal target supply air temperature;

[0053] Condition 2: fan frequency Fs > the minimum frequency...

Embodiment 3

[0067] This embodiment provides an air conditioning system control device, Figure 6 is the block diagram of the device, as Figure 6 As shown, the device 60 includes the following components:

[0068] The first adjustment module 61 is configured to obtain the current air supply temperature of the air conditioning system and the current operating frequency of the fan, and control the compressor of the air conditioning system to adjust the operating frequency according to the air supply temperature and the current operating frequency of the fan; and / or, the second adjustment module 62 is configured to obtain the current return air temperature of the air conditioning system and the current operating frequency of the compressor, and adjust the fan speed according to the return air temperature and the current operating frequency of the compressor. operating frequency.

[0069] It should be noted that, in this embodiment, the air-conditioning system control device 60 may only ha...

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Abstract

The invention discloses an air conditioning system control method and device in order to solve the problem of the related art that air supply quantity of the air conditioning system cannot be effectively controlled. The air conditioning system control method includes: acquiring current air supply temperature of the air conditioning system and current operating frequency of a fan, controlling a compressor of the air conditioning system to adjust operating frequency according to the air supply temperature and the current operating frequency of the fan; and / or, acquiring current return air temperature of the air conditioning system and current operating frequency of the compressor, and adjusting operating frequency of the fan according to the return air temperature and the current operating frequency of the compressor. The air conditioning system control method and device allows air supply quantity of an air conditioning system to be effectively controlled, thereby improving user experience.

Description

technical field [0001] The present invention relates to the technical field of air-conditioning systems, in particular to an air-conditioning system control method and device. Background technique [0002] At present, when installing air-conditioning systems in rail transit areas such as subways, water-cooled direct cooling air-conditioning units are usually used to replace chillers and air-conditioning units in the form of combined cabinets based on energy-saving and installation space considerations. The current water-cooled direct air-conditioning unit adjusts the air-conditioning load mainly by detecting the indoor ambient temperature to adjust the pressure load, but does not control the air supply volume, or requires manual control of the air supply volume. This air supply volume control method will lead to unreasonable air supply volume, large fluctuations in supply air temperature, and poor user experience; when the load changes, after the air conditioning unit adjust...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/86F24F11/77F24F11/64F24F140/20
CPCF24F11/64F24F11/77F24F11/86F24F2140/20Y02B30/70F24F2221/10F24F11/63F24F2140/12F24F2110/10G05B19/042G05B2219/2614
Inventor 谭建明刘华卓明胜陈培生程琦
Owner GREE ELECTRIC APPLIANCES INC
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