Dual-frequency conversion system, inverter compressor control method thereof, and storage medium
A frequency conversion compressor and frequency conversion system technology, which is applied to compressors, compressors with reversible cycle, and control input involving air characteristics, etc., can solve the problems of large temperature fluctuations in control and large changes in cooling capacity output of fixed frequency systems, etc. Achieve the effect of small temperature fluctuation and high control accuracy
Active Publication Date: 2020-07-10
GUANGDONG HIWAVE TECH
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[0002] Existing dual-system frequency conversion air conditioners, as shown in patents 201710113430.8 and 200920042622.5, mostly consist of one frequency conversion system + one fixed frequency system. The cooling capacity output of the system changes greatly during the start-stop phase, which in turn leads to large fluctuations in the control temperature
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[0036] The double frequency conversion system of this embodiment is such as figure 1 As shown, it consists of two sets of frequency conversion systems, a controller 7, and a temperature sensor 8, wherein the first set of frequency conversion systems includes a first external fan 1, a first condenser 2, a first internal fan 3, a first evaporator 4, a first An expansion valve 5, a first variable frequency compressor 6, and a first external fan 1 to exhaust and dissipate heat from the first condenser 2, and the output end of the first condenser 2 is connected to the first expansion valve 5 and the first evaporator 4 in turn through pipelines 1. The first inverter compressor 6 is connected to the input end of the first condenser 2 to form a loop, and the first internal fan 3 is located on the air outlet side of the first evaporator 4 to exhaust and dissipate heat from the first evaporator 4 . The structure of the second frequency conversion system is the same as that of the first ...
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The invention relates to a dual-frequency conversion system, an inverter compressor control method thereof, and a storage medium. The inverter compressor control method comprises the following steps of step S1, periodically detecting a difference deltat obtained by subtracting the set temperature ts from the air conditioner inlet temperature t1; step S2, in the case where deltat is greater than orequal to e (k), judging the states of two inverter compressors, if both the inverter compressors are turned off, then executing step S3, and if both the inverter compressors are turned on, then executing step S4; step S3, controlling a unit to enter refrigeration, firstly turning on one inverter compressor, and after the ratio between deltat and e (k) or the frequency of the currently turned oninverter compressor meets the turn-on condition, turning on another inverter compressor, and then executing step S5; step S4, when the ratio between deltat and e (k) or the frequency of the currentlyturned on inverter compressor meets the turn-off condition, then turning off the inverter compressor with lower current frequency; and step S5, adjusting the two inverter compressors until the frequencies tend to be the same. The inverter compressor control method of the dual-frequency conversion system provided by the invention can enable the dual-frequency conversion system to adapt to various load demands, the inverter compressors can be switched gently, and the temperature fluctuation is small.
Description
technical field [0001] The invention relates to the field of air conditioners, in particular to a double frequency conversion system, a control method for a frequency conversion compressor and a storage medium thereof. Background technique [0002] Existing dual-system frequency conversion air conditioners, as shown in patents 201710113430.8 and 200920042622.5, mostly consist of one frequency conversion system + one fixed frequency system. The cooling capacity output of the system during the start and stop phase changes greatly, which in turn leads to large fluctuations in the control temperature. Contents of the invention [0003] In order to solve or partly solve the deficiencies in the prior art, the present invention provides a double frequency conversion system, a control method for a frequency conversion compressor and a storage medium thereof. [0004] For this reason, a kind of frequency conversion compressor control method of double frequency conversion system is...
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Login to View More IPC IPC(8): F24F11/86F24F11/64F24F11/61F25B13/00F25B49/02F24F110/10
CPCF25B13/00F25B49/022F25B2313/029F24F11/61F24F11/64F24F11/86F24F2110/10
Inventor 李伟瀚吕东建李敏华
Owner GUANGDONG HIWAVE TECH