Carrier frequency control method of inverter air conditioner and inverter air conditioner
A carrier frequency, frequency conversion air conditioner technology, applied in the direction of machinery and equipment, can solve the problem that the energy efficiency of the whole machine can not be balanced with the power consumption saving
Active Publication Date: 2021-06-08
SHANGHAI HITACHI ELECTRICAL APPLIANCES CO LTD
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[0008] In view of the problems in the prior art, the present invention provides a carrier frequency control method of an inverter air conditioner and an inverter air conditioner, which can effectively improve the energy efficiency of the inverter air conditioner, and overcome the problem that the energy efficiency improvement and power consumption of the whole machine cannot be balanced
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[0026] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals denote the same or similar structures in the drawings, and thus their repeated descriptions will be omitted.
[0027] The carrier frequency is also called the switching frequency in the frequency conversion control, which is determined by the number of times the inverter switching device in the frequency conversion controller is turned on and off. The higher the carrier frequency, the more times the switching devices are turned on and off, and the power consumption of the control device will increase, but the sinusoidal stability o...
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The present invention provides a carrier frequency control method of an inverter air conditioner and an inverter air conditioner, wherein the carrier frequency control method comprises the steps of: S10, acquiring the remote controller setting temperature and indoor ambient temperature of the inverter air conditioner; S20, judging the remote controller setting temperature and the indoor ambient temperature Whether the difference between them is greater than or equal to the preset temperature difference, if so, go to S50, if not, go to S30; S30, obtain the indoor unit coil temperature and outdoor unit coil temperature of the inverter air conditioner; S40, determine the indoor unit coil temperature and the outdoor unit coil temperature Whether the ratio between the temperature of the machine coil is greater than or equal to the preset proportional coefficient, if so, execute S50, if otherwise, execute S60; S50, control the inverter air conditioner to run at the first carrier frequency; S60, control the inverter air conditioner to run at the second carrier frequency. By adjusting the carrier frequency, the invention adopts a high carrier frequency to operate when the air conditioner is under high load, and adopts a low carrier frequency to operate when the air conditioner is under a low load, so as to improve the operation efficiency of the variable frequency air conditioner and realize the energy saving effect.
Description
technical field [0001] The invention relates to the technical field of air conditioners, in particular to a carrier frequency control method of an inverter air conditioner and an inverter air conditioner using the control method. Background technique [0002] In the air conditioning system, the weight ratio of each working condition is roughly as follows: the weight of cooling working condition accounts for about 55%, the weight of heating working condition accounts for about 45%, and the weight of each working condition is subdivided, rated cooling 23.4%, intermediate cooling 32.1% %, rated heating 18.1%, intermediate heating 15.6%, low temperature heating 10.8%. It can be seen that the energy efficiency accounts for the largest proportion in the intermediate refrigeration working condition, and it is the working condition that focuses on the system development and matching stage. [0003] At present, for inverter air conditioners, the conventional means of performance deb...
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IPC IPC(8): F24F11/64F24F11/56F24F11/61
CPCF24F11/56F24F11/61F24F11/64
Inventor 张骏李高庆
Owner SHANGHAI HITACHI ELECTRICAL APPLIANCES CO LTD