Multi-split air conditioner electronic expansion valve control method, air conditioner control device and air conditioner
A technology of electronic expansion valve and control method, which is applied in the fields of air conditioners, air conditioning control devices, and multi-connected electronic expansion valve control, and can solve problems such as high exhaust pressure, unadjustable initial opening of the electronic expansion valve of the internal unit, liquid return, etc. , to achieve the effect of avoiding insufficient
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no. 1 example
[0042]Based on this problem, an embodiment of the present invention provides a method for controlling a multi-connected electronic expansion valve.
[0043] see figure 1 , the multi-connected electronic expansion valve control method includes, for example:
[0044] Step S1: Turn on the cooling mode of the air conditioner, and the electronic expansion valve of the internal unit is in the initialization stage;
[0045] Step S2: detecting exhaust superheat Td and / or suction superheat Ts;
[0046] Step S3: Judging whether the exhaust superheat Td and / or the suction superheat Ts meet the electronic expansion valve initial opening adjustment condition; if the electronic expansion valve initial opening adjustment condition is met, adjust the electronic expansion valve. Initialization steps A of the expansion valve.
[0047] In a specific embodiment, it needs to be explained in step S1 that before the user turns on the air conditioner, the electronic expansion valve already has a p...
no. 2 example
[0077] see image 3, which is a block diagram of an air-conditioning control device 100 provided in the second embodiment of the present invention. Among them, the air conditioner control device 100 includes, for example: a superheat acquisition module 110, used to acquire the exhaust superheat Td, the suction superheat Ts, and the average superheat SH of all internal units; a condition judgment module 120, used to judge the initial state of the electronic expansion valve The opening adjustment condition, the electronic expansion valve initial opening increase condition, the electronic expansion valve initial opening decrease condition; the electronic expansion valve control module 130 is used to control the initialization steps A of the electronic expansion valve.
[0078] Preferably, the superheat acquisition module 110 includes, for example, a plurality of temperature acquisition modules 111 and a plurality of pressure acquisition modules 112 . For example, multiple temper...
no. 3 example
[0082] see Figure 4 The third embodiment of the present invention provides an air conditioner 200, including: a computer-readable storage medium 221 storing a computer program and a packaging IC 222, when the computer program is read and executed by the packaging IC 222, the air conditioner 200 realizes the control method of the multi-connected electronic expansion valve as described in any one of the above embodiments.
[0083] In a specific embodiment, combined with Figure 4-5 For example, the air conditioner 200 further includes: an outdoor unit 210 and a plurality of indoor units 220 . Wherein, the external unit 210 is provided with a compressor 211 . The refrigerant flows out from the air outlet of the compressor 211, enters the external unit 210 through the four-way reversing valve 224, passes through the electronic expansion valve 212 of the external unit and multiple electronic expansion valves 223 of the internal unit, and flows out from the electronic expansion v...
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