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US 4,843,837 AGranted
Heat pump system
AssigneeTechnology Research Association of Super Heat Pump Energy Accumulation System
InventorsYasuo Ogawa, Nobuharu Noji, Keiji Koike
Life of this patent
Estimating the term…
Abstract
A heat pump system adapted to use a non-azeotropic refrigerant mixture preferably containing a high boiling temperature refrigerant as a primary component thereof is given an improved heat transfer efficiency and its pressure loss is minimized by arranging a refrigerant extracting means for removing the refrigerant stagnating in the system in an unfavorable state, in a vapor state in a condenser or in liquid state in an evaporator and returning the removed refrigerant into a refrigerant circulating passage of the system; and by constructing an evaporator of a flooded type at least at a portion adjacent to a refrigerant outlet portion of the evaporator.
Claims20
A heat pump system comprising:
- a compressor means;
- a condenser;
- an evaporator;
- a pressure reduction means;
- refrigerant circulating passage means connecting said compressor means, said condenser, said evaporator and said pressure reduction means;
- a refrigerant in said system;
- means for circulating said refrigerant in said system to effect a heat pump cycle;
- said refrigerant being a non-azeotropic refrigerant mixture;
- said system further having a further evaporating means;
- and
- means for extracting unevaporated refrigerant from said evaporator and supplying it to said further evaporating means and then supplying the refrigerant evaporated in said further evaporating means to said compressor means.
8 more elements
A heat pump system comprising:
- a compressor means;
- a condenser;
- an evaporator;
- refrigerant circulating passage means connected between said compressor means and said condenser and between said condenser and said evaporator and between said evaporator and said compressor means;
- a refrigerant in said system;
- means for circulating said refrigerant in said system to effect a heat pump cycle;
- said refrigerant being a non-azeotropic refrigerant mixture consisting of primary component refrigerant and at least one subcomponent refrigerant, said subcomponent having a smaller molar fraction and a lower boiling temperature than those of said primary component;
- said evaporator having at least the portion adjacent to the refrigerant outlet thereof a flooded type reactor construction, said reactor construction including means for heating the refrigerant in said portion by a fluid from a heat source, and means for supplying fluid from a heat source to said heating means;
- and
- means connected to said evaporator for extracting unevaporated refrigerant in a liquid state from within said evaporator and feeding it to a point in said system the temperature of which is higher than the temperature of the heat source fluid for evaporating the thus extracted unevaporated refrigerant and then returning the thus evaporated refrigerant to said circulating passage means.
7 more elements
A heat pump system comprising:
- a compressor means;
- a condenser;
- an evaporator;
- a pressure reduction means;
- refrigerant circulating passage means connecting said compressor means, said condenser, said evaporator and said pressure reduction means;
- a refrigerant in said system;
- means for circulating said refrigerant in said system to effect a heat pump cycle;
- said refrigerant being a non-azeotropic refrigerant mixture;
- means for extracting uncondensed refrigerant from the portion of said condenser adjacent the outlet thereof;
- and
- further comprising an oil separating device connected between said evaporator and said compressor means for separating lubricant entrained in the refrigerant and collecting it, said compressor means having an oil reservoir, and said extracting means being connected between said condenser and said oil reservoir and including suction means connected to said oil separating device for sucking oil separated from the refrigerant out of said separating means and mixing it with the uncondensed refrigerant and delivering it to said oil reservoir.
8 more elements
A heat pump system comprising:
- a compressor means;
- a condenser;
- an evaporator;
- refrigerant circulating passage means connected between said compressor means and said condenser and between said condenser and said evaporator and between said evaporator and said compressor means;
- a refrigerant in said system;
- means for circulating said refrigerant in said system to effect a heat pump cycle;
- said refrigerant being a non-azeotropic refrigerant mixture consisting of a primary component refrigerant and at least one subcomponent refrigerant, said subcomponent having a smaller molar fraction and a lower boiling temperature than those of said primary component;
- said evaporator having at least the portion adjacent to the refrigerant outlet thereof a flooded type reactor construction;
- means connected to said condenser for extracting uncondensed refrigerant vapor in the gaseous state within said condenser and returning it to a part of said passage means at a portion between said compressor means and condenser;
- and
- pressurizing means in said extracting means for increasing the pressure of the uncondensed refrigerant extracted from said condenser before returning it to said passage means.
8 more elements
A heat pump system comprising:
- a compressor means;
- a condenser;
- an evaporator;
- refrigerant circulating passage means connected between said compressor means and said condenser and between said condenser and said evaporator and between said evaporator and said compressor means;
- a refrigerant in said system;
- means for circulating said refrigerant in said system to effect a heat pump cycle;
- said refrigerant being non-azeotropic refrigerant mixture consisting of a primary component refrigerant and at least one subcomponent refrigerant, said subcomponent having a smaller molar fraction and a lower boiling temperature than those of said primary component;
- said evaporator having at least the portion adjacent to the refrigerant outlet thereof a flooded type reactor construction;
- means connected to said condenser for extracting uncondensed refrigerant vapor in the gaseous state within said condenser;
- and
- an oil separating device connected between said evaporator and said compressor means for separating lubricant entrained in the refrigerant and collecting it, said compressor means having an oil reservoir, and said extracting means being connected between said condenser and said oil reservoir and including suction means connected to said oil separating device for sucking oil separated from the refrigerant out of said separating means and mixing it with the uncondensed refrigerant and delivering it to said oil reservoir.
8 more elements
A heat pump system comprising:
- a compressor means;
- a condenser;
- an evaporator;
- refrigerant circulating passage means connected between said compressor means and said condenser and between said condenser and said evaporator and between said evaporator and said compressor means;
- a refrigerant in said system;
- means for circulating said refrigerant in said system to effect a heat pump cycle;
- said refrigerant being a non-azeotropic refrigerant mixture consisting of a primary component refrigerant and at least one subcomponent refrigerant, said subcomponent having a smaller molar fraction and lower boiling temperature than those of said primary component;
- said evaporator having at least the portion adjacent to the refrigerant outlet thereof a flooded type reactor construction;
- and
- means connected to said condenser for extracting uncondensed refrigerant vapor in the gaseous state within said condenser, said extracting means being connected to said evaporator for delivering uncondensed refrigerant to said evaporator, and said extracting means being provided with an ejector therein connected to the lower portion of said evaporator for extracting unevaporated refrigerant therefrom and recirculating it to another part of said evaporator.
7 more elements
A heat pump system comprising:
- a compressor means;
- a condenser;
- an evaporator;
- refrigerant circulating passage means connected between said compressor means and said condenser and between said condenser and said evaporator and between said evaporator and said compressor means;
- a refrigerant in said system;
- means for circulating said refrigerant in said system to effect a heat pump cycle;
- said refrigerant being a non-azeotropic refrigerant mixture consisting of a primary component refrigerant and at least one subcomponent refrigerant, said subcomponent having a smaller molar fraction and a lower boiling temperature than those of said primary component;
- said evaporator having at least the portion adjacent to the refrigerant outlet thereof a flooded type reaction construction;
- and
- means connected to said condenser for extracting uncondensed refrigerant vapor in the gaseous state within said condenser, said extracting means being connected to the lower portion of said evaporator including an injecting means with a plurality of injecting openings for injection thereinto.
7 more elements
A heat pump system comprising:
- a compressor means;
- a condenser;
- an evaporator;
- refrigerant circulating passage means connected between said compressor means and said condenser and between said condenser and said evaporator and between said evaporator and said compressor means;
- a refrigerant in said system;
- means for circulating said refrigerant in said system to effect a heat pump cycle;
- said refrigerant being a non-azeotropic refrigerant mixture consisting of a primary component refrigerant and at least one subcomponent refrigerant, said subcomponent having a smaller molar fraction and a lower boiling temperature than those of said primary component;
- said evaporator having at least the portion adjacent to the refrigerant outlet thereof a flooded type reactor construction;
- means connected to said condenser for extracting uncondensed refrigerant vapor in the gaseous state within said condenser;
- and p1 an air extracting means connected between said condenser and said evaporator for extracting air from the uncondensed refrigerant. rotors as in the present invention and FIG. 8 is a lateral section of an evaporator, FIG. 9 is an a1, p. 5 in the evaporator of the present invention a2, p. 15
7 more elements
Dependencies are inferred from the claim text.