Refrigerant compressor

Abstract

In order to improve a refrigerant compressor, including a compressor unit having a compressor housing and at least one compressor element that is arranged in the compressor housing, for compressing refrigerant, and further including a drive unit having a drive housing and an electric motor that is arranged in the drive housing and connector terminals that are arranged on the drive housing, for the electric motor, and further including an electronic functional unit, such that the connection between the refrigerant compressor and the electronic functional unit is achievable as simply as possible, it is proposed that the connector terminals should be provided in a housing that is arranged on the drive housing, and that an electronic functional unit which performs at least one compressor function should be provided in the housing.

What is claimed is: 
     
         1 . A refrigerant compressor comprising:
 a compressor unit including a compressor housing and at least one compressor element, arranged in the compressor housing, for compressing refrigerant, and further including a drive unit having a drive housing and an electric motor that is arranged in the drive housing, and connector terminals, arranged on the drive housing, for the electric motor, and further including an electronic functional unit;   wherein the connector terminals are provided in a housing that is arranged on the drive housing, and an electronic functional unit which performs at least one compressor function is provided in the housing, the housing having a connector housing unit in which the connector terminals are arranged, and a controller housing unit in which the electronic functional unit is arranged, the controller housing unit being detachably connected to the connector housing unit.   
     
     
         2 . The refrigerant compressor of  claim 1 , wherein the connector housing unit is arranged on the drive housing. 
     
     
         3 . The refrigerant compressor of  claim 1 , wherein the controller housing unit is arranged on the connector housing unit on an opposite side thereof to the drive housing. 
     
     
         4 . The refrigerant compressor of  claim 1 , wherein the controller housing unit covers the connector housing unit. 
     
     
         5 . The refrigerant compressor of  claim 1 , wherein the controller housing unit is covered by a cover on a side remote from the connector housing unit. 
     
     
         6 . The refrigerant compressor of  claim 1 , wherein the electronic functional unit includes a communication unit for exchanging data with external devices. 
     
     
         7 . A refrigerant compressor comprising:
 a compressor unit including a compressor housing and at least one compressor element, arranged in the compressor housing, for compressing refrigerant, and further including a drive unit having a drive housing and an electric motor arranged in the drive housing, and connector terminals, for the electric motor, arranged on the drive housing, and further including an electronic functional unit arranged on the drive housing, the electronic functional unit configured to perform a first compressor function, which is a parameter determining function in which function parameters being determined include one of a temperature of the electric motor, a lubricant differential pressure, and a lubricant level.   
     
     
         8 . The refrigerant compressor of  claim 7 , wherein the function parameters being determined include the temperature of the electric motor and the lubricant differential pressure. 
     
     
         9 . The refrigerant compressor of  claim 7 , wherein the function parameters being determined include the temperature of the electric motor, and the lubricant level. 
     
     
         10 . The refrigerant compressor of  claim 7 , wherein the electronic functional unit is configured to perform a second compressor function, which is a protective function in which each function parameter is compared with a reference parameter, and in the event that any one of said function parameters fails to exceed or, alternatively, fails to reach its respective reference parameter, the electronic functional unit turns off the refrigerant compressor. 
     
     
         11 . The refrigerant compressor of  claim 7 , wherein the electronic functional unit is configured to perform a third compressor function in which a control function operates to control a lubricant heater, a control element for the compressor output, and a motor controller that includes a start-up controller. 
     
     
         12 . The refrigerant compressor of  claim 11 , wherein the electronic functional unit is configured to perform another control function which operates to control one of an injection element for compressed refrigerant for supplementary cooling, a supplementary fan, and a motor controller. 
     
     
         13 . The refrigerant compressor of  claim 7 , wherein the electronic functional unit is configured to perform a second compressor function, which is a protective function in which each function parameter is compared with a reference parameter, and in the event that any one of said function parameters fails to exceed or, alternatively, fails to reach its respective reference parameter, the electronic functional unit turns off the refrigerant compressor;
 and further configured to perform a third compressor function in which a control function operates to control a lubricant heater, a control element for the compressor output, and a motor controller that includes a start-up controller.   
     
     
         14 . The refrigerant compressor of  claim 13 , wherein the electronic functional unit is configured to perform an operating state monitoring function in which the performance of at least one parameter determining function, or at least one protective function, or at least one control function is recorded. 
     
     
         15 . The refrigerant compressor of  claim 14 , wherein the electronic functional unit is configured to perform the parameter determining function in which the function parameter being determined includes one of a voltage across the electric motor, a current consumption of the electric motor, a lubricant temperature, an incoming pressure of the refrigerant, an incoming temperature of the refrigerant, an outgoing pressure of the refrigerant, and an outgoing temperature of the refrigerant. 
     
     
         16 . The refrigerant compressor of  claim 13 , wherein the electronic functional unit is configured to perform an operating state monitoring function in which the performance of at least one parameter determining function, and at least one protective function, and at least one control function is recorded. 
     
     
         17 . The refrigerant compressor of  claim 16 , wherein the electronic functional unit is configured to perform the parameter determining function in which the function parameter being determined includes one of a voltage across the electric motor, a current consumption of the electric motor, a lubricant temperature, an incoming pressure of the refrigerant, an incoming temperature of the refrigerant, an outgoing pressure of the refrigerant, and an outgoing temperature of the refrigerant. 
     
     
         18 . The refrigerant compressor of  claim 7 , wherein the electronic functional unit is configured to perform the parameter determining function in which the function parameter being determined includes one of a voltage across the electric motor, a current consumption of the electric motor, a lubricant temperature, an incoming pressure of the refrigerant, an incoming temperature of the refrigerant, an outgoing pressure of the refrigerant, and an outgoing temperature of the refrigerant. 
     
     
         19 . The refrigerant compressor of  claim 18 , wherein the electronic functional unit is configured to perform a second compressor function, which is a protective function in which each function parameter is compared with a reference parameter, and in the event that any one of said function parameters fails to exceed or, alternatively, fails to reach its respective reference parameter, the electronic functional unit turns off the refrigerant compressor. 
     
     
         20 . A refrigerant compressor according to  claim 7 , wherein recording of at least one function parameter and/or performing of at least one protective function and/or performing of at least one control function take place over time. 
     
     
         21 . A refrigerant compressor according to  claim 7 , wherein the at least one compressor element comprises a piston and a cylinder in which the piston reciprocates.