Heat pump unit
a heat pump and unit technology, applied in the direction of heat pumps, positive displacement liquid engines, lighting and heating apparatus, etc., can solve the problems of reducing the volumetric efficiency of the compressor, affecting the cooling capacity of the refrigeration device, and inevitably rising temperature of the intake gas before reaching the cylinder, so as to maintain the performance of the heat pump unit, and cause no damage to the environment.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
Problems solved by technology
Method used
Image
Examples
first embodiment
[0072]A first embodiment of the present invention which is applied to the refrigeration unit is explained in reference to FIG. 1 to FIG. 3. FIG. 1 is a system diagram of a refrigeration unit relating to first embodiment of the present invention (a reciprocating compressor 3 being a single-stage compressor).
[0073]In FIG. 1 a refrigeration unit 1 is equipped with a refrigerant circulating passageway for refrigerant MH3, and on the passageway the reciprocating compressor 3, from there down, an oil separator 4, a condenser 5, a liquid receiver 6, an expansion valve 7, an evaporator 8 are interposed so as to configure a cooling cycle.
[0074]The reciprocating compressor 3 has a discharge chamber 303 being connected to the cylinder 301 via a discharge valve 302 and an intake chamber 305 being connected to the cylinder via a intake valve 304. The discharge chamber 303 is provided at an immediate exit side of the discharge valve 302 and being connected to the refrigerant circulating passagewa...
second embodiment
[0096]Next, a second embodiment of the present invention (the reciprocating compressors 3a, 3b are combined two stage compressor or individual two stage compressors without an intercooler in the refrigerant path 2a between a liquid receiver 6 and an expander 7 in the two-stage compression and the single-stage expansion) is explained in reference to FIG. 4. In FIG. 4, a refrigeration unit 1 has a two-stage reciprocating compressor consisting of a lower stage compressor 3a and an upper stage compressor 3b. The configuration of the cylinder top assembly of the lower and upper stage compressors 3a and 3b are the same as that of the compressor of the first embodiment shown in FIG. 2 and FIG. 3.
[0097]The refrigerant liquid from the liquid receiver 6 passes through the refrigerant circulating path 2a and reaches the expansion valve 7. The refrigerant liquid is decompressed by the expansion valve 7, the decompressed refrigerant liquid evaporating in the evaporation unit 8 by taking the evap...
third embodiment
[0107]Next, a third embodiment of the present invention (Case 1 of a single stage expansion and the two stage reciprocating compressors 3a, 3b with an intercooler. The intercooler 61 feeds the refrigerant liquid in the side of the liquid receiver 6 to the expansion valve 7 and the evaporation unit 8 via a heat-transfer pipe 61 and the refrigerant liquid is not decompressed in the intercooler 61) is explained in reference to FIG. 5. In FIG. 5, a heat exchanger 61 for liquid gas is provided in the refrigerant circulating path 2a in the downstream side of the liquid receiver 6, and to the heat exchanger, connected is the refrigerant circulating path 2b of the downstream side of the oil separator 4a. And heat exchange take place in the heat exchanger 61 between the refrigerant liquid from the liquid receiver 6 and the discharged refrigerant gas in the downstream side of the oil separator 4a, and the refrigerant liquid is cooled by the discharge refrigerant gas.
[0108]The refrigerant liqu...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More