HEAT PUMP Russian patent published in 2013 - IPC F25B30/02 F25B49/02 

FIELD: engines and pumps.

SUBSTANCE: invention relates to exploiting heat or natural or artificial sources to produce water suitable for use heating and 50-70°C-hot water supply systems for residential and industrial structures and agricultural enterprises. Heat pump comprises compressor, condenser, evaporator, throttling device, hot and warm water pipes, coolant, compressor piston drive and control system. Control system comprises hot water pipe actual temperature gage, setter of hot water minimum temperature, subtractor, amplifier, limiter, setter of compressor piston permissible displacement and scaler. Subtractor first input is connected to hot water pipe actual temperature gage arrange in hot water pump. Subtractor second input is connected to setter of hot water minimum temperature. Subtractor output is connected via amplifier to limiter first input. Limiter second input is connected to setter of compressor piston permissible displacement. Limiter output is connected via scaler to compressor piston drive.

EFFECT: constant hot water temperature.

1 dwg