Water-cooled type low temperature refrigeration compressor unit

Abstract

The invention relates to a thermal cycle device, in particular to a water-cooled type low temperature refrigeration compressor unit. The water-cooled type low temperature refrigeration compressor unit comprises a compressor (1), a condenser (2), a solenoid valve B (7), an expansion valve A (3) and an evaporator (4). The compressor (1) is an intermediate temperate screw compressor consisting of an air suction inlet (1-1), an air exhaust outlet (1-2) and an intermediate liquid spray standby port (1-3). The air exhaust outlet (1-2) is successively connected with the condenser (2), the solenoid valve B (7), the expansion valve A (3) with a temperature-sensitive bag, the evaporator (4) and the air suction inlet (1-1). The temperature-sensitive bag of the expansion valve A (3) is connected between the evaporator (4) and the air suction inlet (1-1). The outlet of the condenser (2) is connected with the intermediate liquid spray standby port (1-3) through a solenoid valve A (6) and an expansion valve B (5). Due to the application of the above technical scheme, the water-cooled type low temperature refrigeration compressor unit is high in security.

Description

technical field [0001] The invention relates to a thermodynamic cycle device, in particular to a water-cooled low-temperature refrigeration compressor unit utilizing a refrigeration compressor to realize a thermodynamic cycle. Background technique [0002] Chinese Patent Publication No. CN101089518A discloses an air-cooled water-cooled double evaporator hot water unit, which has a refrigeration cycle circuit composed of a compressor, a water-cooled condenser, an air-cooled evaporator, and a water-cooled evaporator. There is a controller, and the compressor is connected to a water-cooled condenser through a four-way valve. The water-cooled condenser is connected with an inlet and an outlet, and the water-cooled condenser is connected to a thermal expansion valve. The air-cooled evaporator and the water-cooled evaporator are provided with water inlet and outlet ports, the water-cooled evaporator and the air-cooled evaporator are connected to a four-way valve, and the four-way...

AI Technical Summary

Problems solved by technology

Its main shortcomings: the compressor is prone to heat, and the safety is insufficient

[0004] The screw compressor will generate heat under the condition of extreme operation. If it is operated for a long time, the intermediate compression chamber will be too high, which will cause damage to the mechanical parts in the compression chamber and affect the normal operation of the compressor.

Images