One drag multiple air conditioner and its electronic expansion valve control method
A technology of electronic expansion valve and control method, which is applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problem that the electronic expansion valve cannot be accurately controlled, and achieve the effect of accurate opening.
Active Publication Date: 2018-11-20
WUHU MATY AIR CONDITIONING EQUIP CO LTD +1
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Problems solved by technology
[0003] The refrigerant distribution of one-to-multiple air conditioners is related to the stability of the entire system operation. The existing refrigerant distribution is to give the corresponding electronic expansion valve an initial opening degree according to the nominal capacity of the indoor unit to meet the heat exchange needs of each indoor unit. However, the precise control of the electronic expansion valve cannot be realized
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[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0056] It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.
[0057]In addition, if there are descriptions involving "first", "second" and s...
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The invention discloses a method for controlling an electronic expansion valve of a one-to-multiple air conditioner. The method includes: during the operation of the one-to-multiple air conditioner, detecting the outlet temperature of an indoor heat exchanger; comparing the outlet temperature of the indoor heat exchanger with the preset temperature. The temperature threshold of the electronic expansion valve is corrected for the first time and run for the first preset time; the subcooling degree of the outdoor heat exchanger, the superheating degree of the indoor heat exchanger and the exhaust gas of the compressor are detected Temperature and detection of the middle temperature of the indoor heat exchanger; according to the actual subcooling degree and target subcooling degree of the outdoor heat exchanger, the exhaust temperature of the compressor, the outlet temperature of the indoor heat exchanger, and the middle temperature of the indoor heat exchanger, A second correction is made to the opening of the electronic expansion valve. The invention also provides a one-to-multiple air conditioner. The invention realizes the precise control of the opening degree of the electronic expansion valve.
Description
technical field [0001] The invention relates to the field of one-drag multi-air conditioner, in particular to a one-drag multi-air conditioner and an electronic expansion valve control method thereof. Background technique [0002] One-to-many air conditioner means that one outdoor unit can drive multiple indoor units to run, which not only saves the installation space of the outdoor unit, but also has the advantages of simple system installation, compact structure and comfort, and independent adjustment and operation of each room, which can meet the requirements of each room. Different air conditioning load requirements. [0003] The refrigerant distribution of one-to-multiple air conditioners is related to the stability of the entire system operation. The existing refrigerant distribution is to give the corresponding electronic expansion valve an initial opening degree according to the nominal capacity of the indoor unit to meet the heat exchange needs of each indoor unit. ...
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IPC IPC(8): F25B41/04F25B49/02F25B41/31
CPCF25B49/02F25B2700/2103F25B2600/2513F25B41/20
Inventor 宋分平侯泽飞吴空
Owner WUHU MATY AIR CONDITIONING EQUIP CO LTD