Cooling device for use in e.g. supermarket, has thermostatic expansion valve controlled by temperature sensor arranged in low-pressure line downstream after low pressure passage of internal heat exchanger and before compressor

摘要

The device has an internal heat exchanger (5) for an evaporator (3) with high pressure and low pressure passages. A thermostatic expansion valve (2) is controlled by a temperature sensor (4), which is arranged in a low-pressure line (7) downstream after the low pressure passage of the internal heat exchanger and before a compressor (1). The internal heat exchanger is arranged as a direct current heat exchanger. Another internal heat exchanger is provided for the evaporators.