A Heat Extraction Machine and a Method of Operating a Heat Extraction Machine
AssigneeEmerson Electric GmbH & Co. OHG
InventorAli R. Nejad
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Abstract
The invention relates to a refrigeration machine, particularly a heat pump, comprising a closed circuit, which contains a coolant and in which an evaporator, a compressor, a condenser and an, in particular, electrically operated expansion valve are arranged one after the other. The refrigeration machine also comprises an overheating control unit for at least intermittently regulating the temperature of the coolant in the area of the compressor, particularly the compression final temperature. The invention also relates to a method for operating a refrigeration machine of the aforementioned type.
Claims23
1-22. (canceled)
A method of operating a heat extraction machine, comprising:
- providing a closed circuit, which has a refrigerant and in which an evaporator, a compressor, a condenser and an expansion valve that are arranged one after the other;
- regulating a temperature of the refrigerant in a region of the compressor by means of an overheating regulation unit at least at times so that it does not exceed a critical upper temperature limit.
A heat extraction machine, comprising:
- a closed circuit, which has a refrigerant and in which an evaporator, a compressor, a condenser, and an expansion valve are arranged one after the other;
- and
- an overheating regulation unit for an at least timewise regulation of a temperature of the refrigerant in the region of the compressor such that the temperature does not exceed a critical upper temperature limit.
Dependencies are inferred from the claim text.