Method for limiting inverter compressor maximum frequency according to outdoor environment temperature

An outdoor ambient temperature, variable frequency compressor technology, applied in the field of compressors, can solve the problems of the current not reaching the maximum value, the shutdown and rise of the variable frequency compressor, etc.

Inactive Publication Date: 2008-01-23
LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD
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Problems solved by technology

However, in actual conditions, the current does not reach the set maximum value, and the frequency of the compressor can continue to rise according to the requirements of the outdoor ambient temperature
When the frequency continues to rise, DC-PEAK will occur, causing the inverter compressor to stop, thus affecting the operation and cooling / heating effect of the air conditioner

Method used

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  • Method for limiting inverter compressor maximum frequency according to outdoor environment temperature
  • Method for limiting inverter compressor maximum frequency according to outdoor environment temperature

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Embodiment Construction

[0025] The method for limiting the maximum frequency of the inverter compressor according to the outdoor ambient temperature of the present invention will now be described in conjunction with the control flow diagrams shown in FIG. 1 and FIG. 2 .

[0026] As shown in the figure, the method for limiting the maximum frequency of the inverter compressor according to the outdoor ambient temperature in the present invention includes: setting the outdoor ambient temperature variation range, and setting the maximum ambient temperature A during cooling operation 1 , the minimum ambient temperature B 1 , set the maximum ambient temperature A during heating operation 2 , the minimum ambient temperature B 2 ;Set the maximum limit frequency of the compressor according to the range of outdoor ambient temperature, and set the maximum limit frequency during cooling operation to F c1 (C>A 1 ), F c2 (A 1 > C > B 1 ), F c3 (C1 ), set the maximum limit frequency F during heating operation...

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Abstract

The invention discloses a method for limiting the max. frequency of a frequency-conversion compressor based on outdoor environmental temperature, which comprises: the change range of outdoor environmental temperature is set; the max. limit frequency of the compressor is set based on the range of outdoor environmental temperature; a temperature sensor senses the outdoor environmental temperature; the relationship is judged between the sensed outdoor environmental temperature and the change range of environmental temperature based on which the max. limit frequency of the compressor is set; the max. limit frequency for the frequency-conversion running of the compressor is determined based on the relationship between the sensed outdoor environmental temperature and the change range of environmental temperature based on which the max. limit frequency of the compressor is set. The method improves the controlling logic for the frequency-conversion compressor, so that the compressor will not breakdown because the compressor increases frequency and accelerates without limit depending upon the outdoor environmental temperature.

Description

technical field [0001] The invention relates to compressors, in particular to the setting of control logic of variable frequency compressors. Background technique [0002] The compressor is an important component of the refrigeration system of the air conditioner. The motor rotor drives the compressor to rotate to convert mechanical energy into pressure energy and compress the refrigerant in the compressor cylinder. The refrigerant compressed by the compressor circulates in the refrigeration system of the air conditioner in the order of compression→condensation→expansion→evaporation. At the same time, the refrigerant circulating in the refrigeration system exchanges heat with the air flowing in the room to cool down / heat up the room. , realize the cooling / heating operation of the air conditioner, keep the indoor temperature at the temperature required by the user, and provide people with a fresh and comfortable air environment. [0003] The air conditioner performs cooling ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00
Inventor 齐鹏
Owner LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD
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