Air conditioning system evaporation temperature control method and device and air conditioning system
A technology of evaporating temperature and air conditioning system, which is applied in heating and ventilation control system, heating and ventilation safety system, heating mode, etc., and can solve the problems of insufficient output of compressor capacity and large pressure loss of pipelines, etc.
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Embodiment 1
[0049] figure 1 It is a flow chart of a method for controlling the evaporation temperature of an air-conditioning system provided in Embodiment 1 of the present invention. This embodiment is applicable to an air-conditioning system for controlling the evaporation temperature. The air-conditioning system usually includes an outdoor unit and a plurality of indoor units, and each indoor unit is connected to the outdoor unit through a connecting pipe. The system evaporating temperature control device can be implemented, the device can be realized by software and / or hardware, and the device can be integrated in the air conditioning system. see figure 1 , the method of the embodiment of the present invention specifically includes the following steps:
[0050] S110. Obtain the actual evaporation temperature of the liquid refrigerant in the gas-liquid separator in the outdoor unit.
[0051] Optionally, obtaining the actual evaporation temperature of the liquid refrigerant in the ga...
Embodiment 2
[0063] This embodiment is on the basis of above-mentioned technical scheme, carries out specificization and optimization, figure 2 It is a flow chart for judging whether the target evaporation temperature needs to be corrected according to the operating parameters of each indoor unit provided by Embodiment 2 of the present invention, as shown in figure 2 As shown, it specifically includes the following steps:
[0064] S141. Calculate a first temperature deviation of each indoor unit, where the first temperature deviation is a difference between a return air temperature and a set temperature.
[0065] Wherein, the collected operating parameters of the indoor unit include return air temperature, outlet air temperature and set temperature. The return air temperature mentioned here refers to the temperature at the air return port of the indoor unit, the outlet air temperature refers to the temperature at the air outlet of the indoor unit, and the set temperature refers to the t...
Embodiment 3
[0077] Figure 4 It is a structural diagram of an evaporation temperature control device for an air-conditioning system provided in Embodiment 3 of the present invention. The air-conditioning system includes an outdoor unit and multiple indoor units. Each indoor unit is connected to the outdoor unit through a connecting pipe. The device includes: the actual evaporation temperature Acquisition module 110, compressor operation frequency adjustment module 120, operation parameter acquisition module 130, first judgment module 140, target evaporation temperature correction module 150 and target evaporation temperature maintenance module 160;
[0078] An actual evaporation temperature acquisition module 110, configured to acquire the actual evaporation temperature of the liquid refrigerant in the gas-liquid separator in the outdoor unit;
[0079] A compressor operating frequency adjustment module 120, configured to adjust the operating frequency of the compressor in the outdoor unit...
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