HEAT PUMP UNIT FOR HOT WATER SUPPLY OR HEATING PURPOSES Russian patent published in 2014 - IPC F25B29/00 

FIELD: engines and pumps.

SUBSTANCE: invention relates to energy saving, particularly, to hot water supply or heating. Coolant is evaporated in evaporator under effects of low-potential heat and, in gaseous state, is fed to compressor to be compressed and forced at high pressure to condenser to change in fluid state at releasing the energy to be directed to heat power supply. Then, coolant is directed to throttle to get its pressure reduced and to get back into condenser. In case heat output is insufficient, one more compressor is actuated to up the coolant pressure at evaporator, hence, to up the evaporator temperature. Note here that refrigeration output portion is used for preparation of drinking water at cleaning of tap water by frosting of ice lumps thereof with subsequent incomplete defrosting and application of purified water for drinking or for production of distilled water by cooling of exhaust vent air to dew point and condensation of water vapours contained therein.

EFFECT: variation of heat output over notably wide range.

2 cl, 1 dwg