Variable frequency control apparatus

Abstract

A variable frequency control apparatus includes a variable frequency controller, and at least one temperature sensor, and the variable frequency controller is installed at a compressor of an air-conditioning equipment and electrically coupled to the compressor, and the temperature sensor is installed at a position where a refrigerant pipeline passes through the compressor. A temperature change of the refrigerant passing through the compressor is used as a basis for determining whether an air-conditioning host of the air-conditioning equipment situated in an indoor space has reached a predetermined air-conditioning effect, so as to control and adjust a rotational speed of the compressor and drive the compressor of a constant frequency air-conditioning equipment to produce a variable frequency operation effect.

What is claimed is: 
     
         1 . A variable frequency control apparatus, comprising:
 a variable frequency controller, installed at a compressor of an air-conditioning equipment, and the variable frequency controller being electrically coupled to an electrical circuit, and the variable frequency controller being electrically integrated with a storage unit for storing a control parameter, and a computing unit; and   at least one temperature sensor, installed at a refrigerant pipeline that passes through the compressor, for capturing a refrigerant temperature at a position where the temperature sensor is situated and generating a corresponding voltage value; wherein the at least one temperature sensor is electrically coupled to the variable frequency controller, and the computing unit compares the generated voltage value with the control parameter stored in the storage unit, and then the variable frequency controller outputs a control signal to the compressor to change a rotational speed according to a comparison result.   
     
     
         2 . The variable frequency control apparatus of  claim 1 , further comprising a monitoring module and a communication module, and the monitoring module being electrically coupled to the variable frequency controller and the at least one temperature sensor for monitoring whether the temperature signal fed back by the at least one temperature sensor changes with the control signal outputted by the variable frequency controller in order to determine whether the variable frequency control apparatus is operated normally, and the communication module being electrically coupled to the monitoring module and controlled by the monitoring module to transmit at least one error message indicating the abnormality of the variable frequency control apparatus to a pre-installed communication device. 
     
     
         3 . The variable frequency control apparatus of  claim 2 , further comprising a circuit substrate for installing the variable frequency controller, the monitoring module and the communication module thereon. 
     
     
         4 . The variable frequency control apparatus of  claim 1 , further comprising a temperature sensor installed on a refrigerant entrance side of the compressor. 
     
     
         5 . The variable frequency control apparatus of  claim 1 , further comprising a temperature sensor installed on a refrigerant exit side of the compressor. 
     
     
         6 . The variable frequency control apparatus of  claim 1 , further comprising a temperature sensor installed separately on a refrigerant entrance side and a refrigerant exit side of the compressor. 
     
     
         7 . The variable frequency control apparatus of  claim 1 , further comprising an outdoor temperature sensor installed at the position of the compressor of the air-conditioning equipment and electrically coupled to the variable frequency controller. 
     
     
         8 . The variable frequency control apparatus of  claim 1 , further comprising a temperature sensing device installed at an air-conditioning host of the air-conditioning equipment and electrically coupled to the variable frequency controller. 
     
     
         9 . The variable frequency control apparatus of  claim 1 , further comprising a temperature sensing device installed at an air-conditioning host of the air-conditioning equipment and electrically coupled to the variable frequency controller; and an outdoor temperature sensor installed at the compressor of the air-conditioning equipment and electrically coupled to the variable frequency controller. 
     
     
         10 . The variable frequency control apparatus of  claim 1 , further comprising a temperature sensing device installed at an air-conditioning host of the air-conditioning equipment and electrically coupled to the variable frequency controller; a temperature sensor installed separately on a refrigerant entrance side and a refrigerant exit side of the compressor; and an outdoor temperature sensor installed at the compressor of the air-conditioning equipment and electrically coupled to the variable frequency controller.