CN1815106A - Refrigerating device and refrigerator - Google Patents
Refrigerating device and refrigerator Download PDFInfo
- Publication number
- CN1815106A CN1815106A CNA2006100047573A CN200610004757A CN1815106A CN 1815106 A CN1815106 A CN 1815106A CN A2006100047573 A CNA2006100047573 A CN A2006100047573A CN 200610004757 A CN200610004757 A CN 200610004757A CN 1815106 A CN1815106 A CN 1815106A
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- Prior art keywords
- heat
- cooling agent
- absorbing body
- heat exchanger
- pipe arrangement
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/22—Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
- E01C11/224—Surface drainage of streets
- E01C11/225—Paving specially adapted for through-the-surfacing drainage, e.g. perforated, porous; Preformed paving elements comprising, or adapted to form, passageways for carrying off drainage
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
- F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C15/00—Pavings specially adapted for footpaths, sidewalks or cycle tracks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
- F25B9/008—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being carbon dioxide
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
- F25D11/022—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures with two or more evaporators
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C2201/00—Paving elements
- E01C2201/20—Drainage details
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C5/00—Pavings made of prefabricated single units
- E01C5/06—Pavings made of prefabricated single units made of units with cement or like binders
- E01C5/065—Pavings made of prefabricated single units made of units with cement or like binders characterised by their structure or component materials, e.g. concrete layers of different structure, special additives
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
- F25B2309/061—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide with cycle highest pressure above the supercritical pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/05—Compression system with heat exchange between particular parts of the system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/13—Economisers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2511—Evaporator distribution valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B40/00—Subcoolers, desuperheaters or superheaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/37—Capillary tubes
Abstract
An object is to provide a refrigerating device capable of realizing a high-efficiency operation and a refrigerator provided with the refrigerating device in a case where a compressor (1) having an intermediate-pressure portion is applied, the refrigerating device comprises a compressor (1) having an intermediate-pressure portion; a radiator (2) connected to the compressor (1) on a discharge side; and a heat absorbing unit (10) connected to the radiator (2) on an outlet side and including a pressure reducing unit (65) and a heat sink (87), the heat absorbing unit (10) on the outlet side is connected to a suction portion having a pressure which is lower than that of the intermediate-pressure portion of the compressor (1), a refrigerant pipe of the radiator on the outlet side is branched, one refrigerant pipe is connected to the heat absorbing unit (10), the other refrigerant pipe (6) is connected to the intermediate-pressure portion of the compressor (1), and provided with a pressure reducing mechanism (31) and a heat exchanger (32), and this heat exchanger (32) is constituted in such a manner that heat is exchangeable between a refrigerant of the one refrigerant pipe and a refrigerant of the other refrigerant pipe.
Description
Technical field
The present invention relates to have cooling from the refrigerating plant of the heat exchanger of the cooling agent of radiator output and have the refrigerator of this refrigerating plant.
Background technology
Generally, have and possess compressor, the freeze cycle of radiator and heat dump etc., in above-mentioned heat dump, the refrigerating plant of common cooling cooling object.
Example as such refrigerating plant in patent documentation 1, discloses: 2 heat dumps that in total compressor and condenser, are connected in parallel, and switch these heat dumps, cool off the refrigerator of refrigerating chamber and refrigerating chamber independently of each other.
Yet, in this refrigerating plant, be suitable for compressor sometimes with middle splenium, for example hold the compressor of multi-stage compression mechanism.
When in aforesaid refrigerating plant and refrigerator, be suitable for have this in the middle of during the compressor of splenium, often by constructing the freeze cycle that is fit to utilize this centre splenium, can realize can more efficient operation refrigerating plant.
Patent documentation 1: the spy opens the 2000-230767 communique.
Summary of the invention
Therefore, the objective of the invention is to, provide: under the situation that is suitable for compressor, can realize the refrigerating plant that efficiently moves and possess the refrigerator of this refrigerating plant with middle splenium.
Refrigerating plant of the present invention is characterized in that, is possessing: the compressor with middle splenium; The radiator that is connected with the discharge side of this compressor; Be connected with the outlet side of this radiator, the heat-absorbing body that possesses the mechanism of decompressor and heat dump, the outlet side of above-mentioned heat-absorbing body is connected to the suction portion than the above-mentioned middle splenium low pressure of above-mentioned compressor, refrigerating plant in, cooling agent pipe arrangement branch with the outlet side of above-mentioned radiator, one side's cooling agent pipe arrangement is connected with above-mentioned heat-absorbing body, the opposing party's cooling agent pipe arrangement is connected with the middle splenium of above-mentioned compressor, simultaneously, in above-mentioned the opposing party's cooling agent pipe arrangement, possess the mechanism of decompressor and heat exchanger, but this heat exchanger constitutes the cooling agent heat exchange in cooling agent in the cooling agent pipe arrangement that makes an above-mentioned side and above-mentioned the opposing party's the cooling agent pipe arrangement
The present invention's two described inventions, it is characterized in that, in one of the present invention's refrigerating plant, possesses the 1st heat exchanger, it constitutes the cooling agent between the suction portion that makes above-mentioned heat-absorbing body and above-mentioned compressor, can carry out heat exchange with the cooling agent in the cooling agent pipe arrangement that flows out the above-mentioned side behind the above-mentioned heat exchanger.
The present invention 3 described in invention, it is characterized in that in 1 or the present invention's of the present invention 2 described refrigerating plants, above-mentioned heat-absorbing body has following formation: the 1st heat-absorbing body that possesses the 1st mechanism of decompressor and the 1st heat dump; Be set up in parallel with the 1st heat-absorbing body, possess the 2nd heat-absorbing body of the 2nd mechanism of decompressor and the 2nd heat dump, behind the outlet side of above-mentioned the 1st heat-absorbing body and above-mentioned the 2nd heat-absorbing body interflow, be connected to the suction portion of above-mentioned compressor.
The present invention 4 described in invention, it is characterized in that, in the present invention's 3 described refrigerating plants, possess: the 1st heat exchanger, it is used for the cooling agent behind above-mentioned the 1st heat dump of outflow, and the cooling agent between the above-mentioned heat exchanger in an above-mentioned side's the cooling agent pipe arrangement and above-mentioned the 1st mechanism of decompressor carries out heat exchange; With the 2nd heat exchanger, it is used for the cooling agent behind above-mentioned the 2nd heat dump of outflow, and the cooling agent between the above-mentioned heat exchanger in an above-mentioned side's the cooling agent pipe arrangement and above-mentioned the 2nd mechanism of decompressor, carries out heat exchange.
The present invention 5 described in invention, it is characterized in that, the 4th heat exchanger that cooling agent and the cooling agent that flows out behind above-mentioned the 1st heat dump that will be used for flowing out the cooling agent pipe arrangement of the above-mentioned side behind the above-mentioned heat exchanger carries out heat exchange, be connected to the 1st heat-absorbing body and the 2nd heat-absorbing body with the cooling agent pipe arrangement of an above-mentioned side after flowing out the 4th heat exchanger, and possesses the 5th heat exchanger, it is used for outflow is connected to the cooling agent of the cooling agent pipe arrangement of the above-mentioned side behind above-mentioned the 4th heat exchanger of above-mentioned the 2nd heat-absorbing body, carry out heat exchange with the cooling agent behind above-mentioned the 2nd heat dump of outflow, after flowing out above-mentioned the 1st heat dump, and flow out the cooling agent pipe arrangement behind above-mentioned the 4th heat exchanger, after flowing out above-mentioned the 2nd heat dump, and after flowing out the cooling agent pipe arrangement interflow behind above-mentioned the 5th heat exchanger, be connected to the suction portion of above-mentioned compressor.
The present invention 6 described in invention, it is characterized in that, the present invention 3 to the present invention's 5 described refrigerating plants, above-mentioned the 1st heat-absorbing body is optionally implemented function at different temperature bands with above-mentioned the 2nd heat-absorbing body.
The present invention 7 described in invention, it is characterized in that in the present invention's 6 described refrigerating plants, above-mentioned the 2nd heat-absorbing body side is implementing function than the low temperature band of above-mentioned the 1st heat-absorbing body.
Refrigerator of the present invention is characterized in that, possess the present invention 1 to the present invention 7 described in refrigerating plant.
The present invention 9 described in invention, it is characterized in that in the present invention's 8 described refrigerators, possessing: refrigerating chamber; Refrigerating chamber with the temperature operation lower than this refrigerating chamber cools off above-mentioned refrigerating chamber by above-mentioned the 1st heat-absorbing body, cools off above-mentioned refrigerating chamber by above-mentioned the 2nd heat-absorbing body.
The present invention 10 described in invention, it is characterized in that, in the present invention's 9 described refrigerators,, make coolant flow in above-mentioned the 1st heat-absorbing body and above-mentioned the 2nd heat-absorbing body when above-mentioned refrigerating chamber and/or above-mentioned refrigerating chamber are in to fixed temperature when above.
The present invention 11 described in invention, it is characterized in that, the present invention 1 to the present invention's 7 described refrigerating plants and the present invention 8 to the present invention's 10 described refrigerators, adopt carbon dioxide as cooling agent.
According to the present invention, carry out overcooled heat exchange loop by the cooling agent that possesses flowing out radiator, the refrigerating plant that can efficiently move can be provided.And, according to the present invention, can provide refrigerator with high-efficiency operation.
Description of drawings
Fig. 1 is the coolant circuit figure of an embodiment of expression refrigerating plant of the present invention.
Fig. 2 is enthalpy (enthalpy) pressue-graph of the freeze cycle of refrigerating plant one embodiment of the present invention.
Fig. 3 is the roughly pie graph of the refrigerating plant of expression an embodiment of the present invention to the suitable example of refrigerator.
Fig. 4 is the coolant circuit figure of other embodiment of expression refrigerating plant of the present invention.
Fig. 5 is the coolant circuit figure of the other embodiment of expression refrigerating plant of the present invention.
Fig. 6 is the coolant circuit figure of the 4th embodiment of expression refrigerating plant of the present invention.
Among the figure: the 1-compressor; The 2-radiator; 6-cooling agent ingress pipe; 7,52,53-check valve; 10-the 1st heat-absorbing body; 11-the 2nd heat-absorbing body; 15-the 4th heat exchanger; 16-the 5th heat exchanger; 17-the 1st heat exchanger; 18-the 2nd heat exchanger; 19-the 3rd heat exchanger; The 20-heat exchange loop; 21,41-refrigerating chamber; 22,42-refrigerating chamber; 30,50,70,90-refrigerating plant; 31-the 3rd expansion valve; The 32-cooling heat exchanger; The 40-refrigerator; 57,58-heat dump; 63,64-fan; 65-the 1st expansion valve; 66-the 2nd expansion valve; The 91-triple valve; 92-the 1st capillary; 93-the 2nd capillary.
The specific embodiment
Below, with reference to the accompanying drawings, describe refrigerating plant of the present invention in detail and possess the embodiment of the best of the refrigerator of this refrigerating plant.
(embodiment 1)
With reference to the accompanying drawings, one embodiment of the invention are described in detail in detail.Fig. 1 shows the coolant circuit figure as the refrigerating plant of one embodiment of the invention.Coolant apparatus 30 has: compressor 1; Discharge the radiator 2 that side is connected with this compressor 1; The heat-absorbing body 10 that is connected with these radiator 2 outlet sides; The 2nd heat-absorbing body 11 that is set up in parallel with the 1st heat-absorbing body 10; With heat exchange loop 20.The outlet side of the 1st heat-absorbing body 10 and the 2nd heat-absorbing body 11 is connected with the suction side of compressor 1, the outlet side of heat exchange loop 20 is connected with the middle splenium of compressor 1, constitutes freeze cycle.
The 1st heat-absorbing body 10 comprises the 1st expansion valve 65 and refrigeration heat dump 57 from the coolant flow of branch point 9A.And the 2nd heat-absorbing body 11 comprises: be set up in parallel with above-mentioned the 1st heat-absorbing body 10 as mentioned above, from the 2nd expansion valve 66 of the coolant flow of branch point 9A; With freezing heat dump 58 and the check valve 52 used.
So-called the 1st heat-absorbing body 10 and the 2nd heat-absorbing body 11, implement function with the temperature band that mutual selectivity is different, from the cooling agent pipe arrangement of radiator 2 in branch point 9A branch, one branch road is as the 1st heat-absorbing body 10, another branch road connects respectively side by side as the 2nd heat-absorbing body 11, from the suction inlet of compressor 1, collaborate again at above-mentioned junction of two streams 9B.
At this, the 1st expansion valve 65 and the 2nd expansion valve 66 constitute the degree of throttling changeably.By changing the degree of this throttling, cooling agent is low to moderate setting pressure till heat dump 57,58, can control evaporating temperature with the cooling agent in the heat dump 57,58, simultaneously, by close fully the 1st and the 2nd expansion valve 65,66 one of them, can make cooling agent optionally be passed to the 1st heat-absorbing body 10 or the 2nd heat-absorbing body 11.
And the refrigerating plant 30 of present embodiment between the suction side of the junction of two streams 9B of the 1st heat-absorbing body 10 and the 2nd heat-absorbing body 11 and compressor 1, has: check valve 53; With the 3rd heat exchanger 19, be set to and carry out heat exchange to the cooling agent in front of the cooling agent that flows out the 1st and the 2nd heat dump 57,58 and the above-mentioned branch point 9A.
And, the the 1st and the 2nd heat-absorbing body 10,11 is owing to possess aforesaid formation, so for example close the 2nd expansion valve 66, when opening the 1st expansion valve 65, cooling agent is only in heat dump 57 sides, promptly in the 1st heat-absorbing body 10 circulation, on the contrary, close the 1st expansion valve 65, when opening the 2nd expansion valve 66, cooling agent promptly circulates in the 2nd heat-absorbing body 11 only in heat dump 58 sides.
At this,,, in via the 3rd heat exchanger 19, after the 3rd heat exchanger 19 and the cooling agent that flows out cooling heat exchanger 32 carry out heat exchange, return the suction inlet of compressor 1 through behind the check valve 53 through the cooling agent of heat dump 57.In addition, through the cooling agent of heat dump 58,, in via the 3rd heat exchanger 19, after the 3rd heat exchanger 19 and the cooling agent that flows out cooling heat exchanger 32 carry out heat exchange, return the suction inlet of compressor 1 through behind the check valve 52,53.
And, in the present embodiment,,, be sent to refrigerating chamber 21 through conduit 57A through the cold wind of heat dump 57, through the cold wind of heat dump 58,, be sent to refrigerating chamber 22 through conduit 58A.
At this, in the refrigerating plant 30 of present embodiment,, consider that carrying capacity of environment is little, combustibility and toxicity etc. as cooling agent, use carbon dioxide coolant (CO as natural cooling agent
2), the oil as the lubricating oil of compressor 2 uses for example mineral oil (mineral oil), alkylbenzene oil, ether oil, ester oil, PGA (polyglycols), POE (polyol ester) etc.
According to above formation,, the action of the refrigerating plant 30 of present embodiment is described with reference to Fig. 1 and Fig. 2.Fig. 2 is enthalpy pressure (ph) curve map of the freeze cycle of present embodiment.
At first, to freezing operation (for example, about-26 ℃), the cyclic curve of representing with the solid line among Fig. 2 describes.Also have, this freezing operation is to make cooling agent in above-mentioned heat dump 58 sides, i.e. the situation of circulation in the 2nd heat-absorbing body 11.In the present embodiment, compressor 1 is if move, and then the cooling agent of being discharged by compressor 1 dispels the heat in radiator 2, cools off.That is, at first, cooling agent is by the order circulation of the discharge of the suction of (1) 1 grade of compression unit 1A, the discharge of (2) 1 grades of compression unit 1A, the suction of (3) 2 grades of compression unit 1B, (4) 2 grades of compression unit 1B.Thereafter, cooling agent is exported to branch point 9C from (5) radiator 2, in this branch, a part at heat exchange loop 20, all the other circulate in the 2nd heat-absorbing body 11.
Be passed to the cooling agent of heat exchange loop 20 sides from branch point 9C, (6) become gas/liquid 2 phase mixtures to the outlet of the 3rd expansion valve 31.And, this cooling agent is with the state of 2 phase mixtures, in cooling heat exchanger 32, carry out heat exchange, warmed with the cooling agent that is passed to the 2nd heat-absorbing body 11 sides from branch point 9C, become gaseous coolant, import to compressor 1 middle splenium, be between intercooler 1C and the 2 grades of compression unit 1B.That is, (6) are the outlet of the 3rd expansion valve 31, the inlet of cooling heat exchanger 32, and (21) are the outlets of cooling heat exchanger 32, through the suction to 2 grades of compression unit 1B of (3) of the cooling agent here, are compressed by 2 grades of compression unit 1B.
On the other hand, be passed to the cooling agent of the 2nd heat-absorbing body 11 sides from branch point 9C, in cooling heat exchanger 32, as above-mentioned carry out heat exchange, supercooling with the cooling agent that is passed to heat exchange loop 20 sides after, further be cooled at the 3rd heat exchanger 19, in branch point 9A branch, to the 2nd expansion valve 66.(18) be the outlet of cooling heat exchanger 32, the inlet of the 3rd heat exchanger 19, (7) are the outlet of the 3rd heat exchanger 19, the inlet of the 2nd expansion valve 66, and (8) are the outlets of the 2nd expansion valve 66, and (22) are the outlets of heat dump 58.Enter the liquid coolant evaporation of heat dump 58, after absorb heat on every side, in the 3rd heat exchanger 19, carry out heat exchange with the cooling agent that flows out from cooling heat exchanger 32 after, turn back to the suction of compressor 1.That is, (23) are the outlets of the 3rd heat exchanger 19, and (1) is the suction of 1 grade of compression unit 1A.
Corresponding therewith, during the refrigeration operation (for example, about-5 ℃), form the circulation of representing with the dotted line among Fig. 2.Also have, this refrigerates operation, is to make cooling agent in above-mentioned heat dump 57 sides, i.e. the situation of circulation in the 1st heat-absorbing body 10.At this moment, if compressor 1 also moves, then the cooling agent of being discharged by compressor 1 dispels the heat in radiator 2, cools off.That is, at first, cooling agent by the discharge of the suction of (9) 1 grades of compression unit 1A, the discharge of (10) 1 grades of compression unit 1A, the outlet that (11) are intercooler 1C, the suction of 2 grades of compression unit 1B, (12) 2 grades of compression unit 1B, the order circulation.Thereafter, cooling agent is exported to branch point 9C from (5) radiator 2, in this branch, a part in heat exchange loop 20, all the other circulate in the 2nd heat-absorbing body 10.
Be passed to the cooling agent of heat exchange loop 20 sides from branch point 9C,, become gas/liquid 2 phase mixtures to the outlet of (16) the 3rd expansion valves 31.And, this cooling agent is with the state of 2 phase mixtures, in cooling heat exchanger 32, carry out heat exchange, warmed with the cooling agent that is passed to the 2nd heat-absorbing body 10 sides from branch point 9C, become gaseous coolant, import to compressor 1 middle splenium, be between intercooler 1C and the 2 grades of compression unit 1B.That is, (16) are the outlet of the 3rd expansion valve 31, the inlet of cooling heat exchanger 32, and (17) are the outlets of cooling heat exchanger 32, through the suction to 2 grades of compression unit 1B of (11) of the cooling agent here, are compressed in 2 grades of compression unit 1B.
On the other hand, be passed to the cooling agent of the 1st heat-absorbing body 10 sides from branch point 9C, in cooling heat exchanger 32, as above-mentioned carry out heat exchange, supercooling with the cooling agent that is passed to heat exchange loop 20 sides after, in the 3rd heat exchanger 19, further be cooled, in branch point 9A branch, to the 1st expansion valve 65.(13) be the outlet of cooling heat exchanger 32, the inlet of the 3rd heat exchanger 19, (14) are the outlet of the 3rd heat exchanger 19, the inlet of the 1st expansion valve 65, and (15) are the outlets of the 1st expansion valve 65, and (24) are the outlets of heat dump 57.Enter the liquid coolant evaporation of heat dump 57, after absorb heat on every side, in the 3rd heat exchanger 19, carry out heat exchange with the cooling agent that flows out from cooling heat exchanger 32 after, turn back to the suction inlet of compressor 1.That is, (25) are the outlets of the 3rd heat exchanger 19, and (9) are the suctions of 1 grade of compression unit 1A.When freezing operation, refrigeration operation, cooling agent is simultaneously as cocycle, and state variation forms freeze cycle.
And, in the present embodiment, owing in coolant circuit, enclosed carbon dioxide coolant, so environment temperature around radiator 2, be that (5) among Fig. 2 are even under the situation of temperature about present embodiment is as+2 ℃ in radiator 2 outlet, at the use serial cooling agent in fluorine Lyons (flon) in the past and the coolant circuit of HC series cooling agent, expansion valve 65 promptly is set after being right after radiator 2, in 66 such coolant circuits, owing to flow into expansion valve 65,66 cooling agent mass dryness fraction is too high, so the ratio height of the gaseous coolant in the cooling agent, the performance that is difficult to fully be cooled off.
Therefore, in the present embodiment, by constituting: with the cooling agent pipe arrangement branch of the outlet side of radiator 2, has heat exchange loop 20 in one side, flow into the cooling agent of the 1st and the 2nd heat-absorbing body 10,11 by cooling heat exchanger 32 coolings of this heat exchange loop 20, and further cool off by the 3rd heat exchanger 19, thereby even under employing has situation as the carbon dioxide coolant of above-mentioned characteristic, also can obtain high cooling effect.And, at this moment,,, further improve the efficient of refrigerating plant 30 so also can improve the compression efficiency of compressor 1 because the cooling agent of heat exchange loop 20 sides imports to the middle splenium of compressor 1 as gaseous coolant.
In addition, when freezing operation, with the refrigeration operating ratio, should make the supercooling of the cooling agent that flows into the 2nd heat-absorbing body 11 bigger, and in the present embodiment, as mentioned above owing to the throttle degree of the 3rd expansion valve 31 that makes heat exchange loop 20 is variable, so bigger supercooling when freezing operation the time can obtain than the refrigeration operation, and, during freezing operation, by using the heat dump 58 of in than the lower temperature band of the heat dump 57 of refrigeration usefulness, implementing function, can carry out more high efficiency freezing operation.
As described in detail above, in the present embodiment, possesses heat exchange loop 20, and by optionally use the formation of heat dump 57 and heat dump 58 according to the serviceability temperature band, in the different freezing operation of temperature band and refrigerate in service, the heat dump that adapts to its temperature can be used, the raising of the operational efficiency of each operation can be expected.
Below, with reference to Fig. 3, the suitable example of the refrigerator of the refrigerating plant 30 of present embodiment is described.
Fig. 3 shows the roughly pie graph of the refrigerator of the refrigerating plant 30 that possesses present embodiment.The top that constitutes of this refrigerator 40 has refrigerating chamber 41, and the bottom has refrigerating chamber 42.And in each chamber 41,42 portion, case internal partition 61,62 is set respectively, in the wind path 44 that cuts off by this case internal partition 61,62, above-mentioned heat dump 57,58 and fan 63,64 are set.In this formation, along with the heat of refrigeration operation and freezing operation is opened, heat is closed, switch aforesaid the 1st heat-absorbing body 10 and the 2nd heat-absorbing body 11, cooling agent is flowed in either party's heat dump 57,58, drive corresponding therewith fan 63,64.When cooling agent flows, provide cold wind to refrigerating chamber 41 in heat dump 57; When cooling agent flows, provide cold wind to refrigerating chamber 42 in heat dump 58.
According to above-mentioned, the refrigerator 40 of present embodiment is owing to the refrigerating plant 30 that has as above, so even use under the situation of carbon dioxide, also can obtain high cooling performance and high-efficiency operation in cooling agent.
In addition, as mentioned above, in the refrigerating plant 30 of present embodiment, when freezing operation, close the 1st expansion valve 65, open the 2nd expansion valve 66, cooling agent is circulated in the 2nd heat-absorbing body 11; When the refrigeration operation, close the 2nd expansion valve 66, open the 1st expansion valve 65, cooling agent is circulated in the 1st heat-absorbing body 10, but be not limited thereto, for example, in above-mentioned refrigerator 40, when refrigerating chamber 41 and refrigerating chamber 42 need cooling fast when normal temperature, during the what is called quick-frozen, when compressor 1 self-operating halted state brings into operation and during high load capacity, also have refrigerating chamber 41 and refrigerating chamber 42 for to fixed temperature when above etc., by whole the 1st expansion valves 65 and the 2nd expansion valve 66 are opened in requisition for aperture, make cooling agent in the circulation of the both sides of the 1st heat-absorbing body 10 and the 2nd heat-absorbing body 11, can promptly cool off each chamber 41, in 42.
(embodiment 2)
Below, with reference to Fig. 4, other embodiment of the present invention are described.Fig. 4 shows the coolant circuit figure of the refrigerating plant 50 of this situation.In the present embodiment, when comparing, have the 1st and the 2nd heat exchanger 17,18 and replace the 3rd heat exchanger 19, this point difference with the foregoing description 1.That is, in the present embodiment, has at the cooling agent that flows out heat dump 57,58 before junction of two streams 9B interflow the formation of carrying out heat exchange with the cooling agent that flows into the 1st and the 2nd expansion valve 65,66.And the refrigerating plant 50 of present embodiment is same with the refrigerating plant 30 of the foregoing description 1 certainly, applicable to refrigerator.
(embodiment 3)
Below, with reference to Fig. 5, other embodiment that the present invention is other are described.Fig. 5 shows the coolant circuit figure of the refrigerating plant 70 of this situation.In the present embodiment, when comparing with the foregoing description 1, there is not the 3rd heat exchanger 19, at first, flow out the cooling agent of cooling heat exchanger 32, before branch point 9A, carry out the heat exchange this point at the 4th heat exchanger 15 and the cooling agent that flows out heat dump 57, and the cooling agent that only flows into the 2nd heat-absorbing body 11 sides carries out heat exchange at the 5th heat exchanger 16 and the cooling agent that flows out heat dump 58, these some differences.
Also have, also same even in the refrigerating plant 70 of present embodiment certainly with the refrigerating plant of the various embodiments described above, applicable to refrigerator.
(embodiment 4)
Below, with reference to Fig. 6, the 4th embodiment of the present invention is described.Fig. 6 shows the coolant circuit figure of the refrigerating plant 90 of this situation.In the present embodiment, when comparing with the foregoing description 1, in the position of branch point 9A triple valve 91 is set, simultaneously, possesses the 3rd and the 4th heat-absorbing body 10B, 11B and replace the 1st and the 2nd heat-absorbing body 10,11, these points are different.
The 3rd heat-absorbing body 10B comprises that the 1st capillary 92 and heat dump 57, the 4 heat-absorbing body 11B comprise the 2nd capillary 93 and heat dump 58.
The refrigerating plant 90 of present embodiment by triple valve 91, is selected cooling agent is circulated in the 3rd heat-absorbing body 10B, or cooling agent is circulated in the 4th heat-absorbing body 11B, by like this, can select refrigeration operation and freezing operation.According to above-mentioned, in the refrigerating plant 90 of present embodiment, owing in each heat-absorbing body, use capillary 92,93 to replace expansion valve 65,66, so can realize refrigerating plant of the present invention by lower cost.
Moreover, even it is in the refrigerating plant 50,70 of the foregoing description 2,3, also applicable as present embodiment the 3rd and the 4th heat-absorbing body 10B, 11B, and, even in the refrigerating plant 90 of present embodiment, also same with the refrigerating plant of the various embodiments described above, certainly applicable to refrigerator.
More than, by each embodiment the present invention has been described, but has the invention is not restricted to this, can implement various changes.For example, in the various embodiments described above, enclosed carbon dioxide coolant in coolant circuit, but be not limited thereto, its fluorine Lyons in addition of also applicable inclosure is cooling agent etc.
And, the 3rd expansion valve 31 in the various embodiments described above and the expansion valve 65 and 66 of the foregoing description 1,2 and 3, variable as required more capillary.
Claims (11)
1, a kind of refrigerating plant possesses: the compressor with middle splenium; The radiator that is connected with the discharge side of this compressor; Be connected, possess the heat-absorbing body of the mechanism of decompressor and heat dump with the outlet side of this radiator, the outlet side of described heat-absorbing body is connected to the suction portion than splenium low pressure in the middle of described compressor described,
Cooling agent pipe arrangement branch with the outlet side of described radiator, one side's cooling agent pipe arrangement is connected with described heat-absorbing body, the opposing party's cooling agent pipe arrangement is connected with the middle splenium of described compressor, simultaneously, in described the opposing party's cooling agent pipe arrangement, possess the mechanism of decompressor and heat exchanger, but this heat exchanger constitutes the cooling agent heat exchange in cooling agent in the cooling agent pipe arrangement that makes a described side and described the opposing party's the cooling agent pipe arrangement.
2, according to the refrigerating plant described in the claim 1, it is characterized in that,
Possess the 1st heat exchanger, it constitutes the cooling agent between the suction portion that makes described heat-absorbing body and described compressor, can carry out heat exchange with the cooling agent in the cooling agent pipe arrangement that flows out the described side behind the described heat exchanger.
3, according to the refrigerating plant described in claim 1 or the claim 2, it is characterized in that,
Described heat-absorbing body has following formation: the 1st heat-absorbing body that possesses the 1st mechanism of decompressor and the 1st heat dump; Be set up in parallel with the 1st heat-absorbing body, possess the 2nd heat-absorbing body of the 2nd mechanism of decompressor and the 2nd heat dump,
Behind the outlet side interflow of described the 1st heat-absorbing body and described the 2nd heat-absorbing body, be connected to the suction portion of described compressor.
4, according to the refrigerating plant described in the claim 3, it is characterized in that,
Possess: the 1st heat exchanger, it is used for the cooling agent behind described the 1st heat dump of outflow, and the cooling agent between the described heat exchanger in a described side's the cooling agent pipe arrangement and described the 1st mechanism of decompressor, carries out heat exchange; With
The 2nd heat exchanger, it is used for the cooling agent behind described the 2nd heat dump of outflow, and the cooling agent between the described heat exchanger in a described side's the cooling agent pipe arrangement and described the 2nd mechanism of decompressor, carries out heat exchange.
5, according to the refrigerating plant described in the claim 3, it is characterized in that,
Be connected in the refrigerating plant of the 1st heat-absorbing body and the 2nd heat-absorbing body at cooling agent pipe arrangement the 4th heat exchanger and the described side behind outflow the 4th heat exchanger, wherein the 4th heat exchanger cooling agent that is used for flowing out the cooling agent pipe arrangement of the described side behind the described heat exchanger carries out heat exchange with the cooling agent that flows out behind described the 1st heat dump
Possess the 5th heat exchanger, it is used for outflow is connected to the cooling agent of the cooling agent pipe arrangement of the described side behind described the 4th heat exchanger of described the 2nd heat-absorbing body, carries out heat exchange with the cooling agent that flows out behind described the 2nd heat dump,
Flow out behind described the 1st heat dump and flow out described the 4th heat exchanger after the cooling agent pipe arrangement and flow out behind described the 2nd heat dump and flow out described the 5th heat exchanger after cooling agent pipe arrangement interflow after, be connected to the suction portion of described compressor.
6, according to claim 3 to the refrigerating plant described in the claim 5, it is characterized in that,
Described the 1st heat-absorbing body is optionally implemented function at different temperature bands with described the 2nd heat-absorbing body.
7, according to the refrigerating plant described in the claim 6, it is characterized in that,
Described the 2nd heat-absorbing body side implements function at the temperature band lower than described the 1st heat-absorbing body.
8, a kind of refrigerator is characterized in that,
Possesses claim 1 to the refrigerating plant described in the claim 7.
9, the refrigerator described in according to Claim 8 is characterized in that,
Possess: refrigerating chamber; With refrigerating chamber with the temperature operation lower than this refrigerating chamber,
Cool off described refrigerating chamber by described the 1st heat-absorbing body, cool off described refrigerating chamber by described the 2nd heat-absorbing body.
10, according to the refrigerator described in the claim 9, it is characterized in that,
When described refrigerating chamber and/or described refrigerating chamber are in to fixed temperature when above, make coolant flow in described the 1st heat-absorbing body and described the 2nd heat-absorbing body.
11, according to claim 1 to the refrigerating plant described in the claim 7 and claim 8 to the refrigerator described in the claim 10, it is characterized in that,
Adopt carbon dioxide as cooling agent.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005024057A JP2006207974A (en) | 2005-01-31 | 2005-01-31 | Refrigerating apparatus and refrigerator |
| JP2005024057 | 2005-01-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1815106A true CN1815106A (en) | 2006-08-09 |
Family
ID=36118319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006100047573A Pending CN1815106A (en) | 2005-01-31 | 2006-01-27 | Refrigerating device and refrigerator |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20060168997A1 (en) |
| EP (1) | EP1696188A3 (en) |
| JP (1) | JP2006207974A (en) |
| KR (1) | KR100695370B1 (en) |
| CN (1) | CN1815106A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4923794B2 (en) | 2006-07-06 | 2012-04-25 | ダイキン工業株式会社 | Air conditioner |
| JP2008249209A (en) * | 2007-03-29 | 2008-10-16 | Sanyo Electric Co Ltd | Refrigerating device |
| JP5042058B2 (en) * | 2008-02-07 | 2012-10-03 | 三菱電機株式会社 | Heat pump type hot water supply outdoor unit and heat pump type hot water supply device |
| JP5120056B2 (en) * | 2008-05-02 | 2013-01-16 | ダイキン工業株式会社 | Refrigeration equipment |
| US9989280B2 (en) * | 2008-05-02 | 2018-06-05 | Heatcraft Refrigeration Products Llc | Cascade cooling system with intercycle cooling or additional vapor condensation cycle |
| EP2869004B1 (en) * | 2013-11-04 | 2019-05-01 | LG Electronics Inc. | Refrigerator and method for controlling the same |
| US10830499B2 (en) * | 2017-03-21 | 2020-11-10 | Heatcraft Refrigeration Products Llc | Transcritical system with enhanced subcooling for high ambient temperature |
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| JPS58179777A (en) * | 1982-03-03 | 1983-10-21 | 三洋電機株式会社 | Refrigerator |
| GB2143014B (en) * | 1983-05-16 | 1986-09-17 | Hotpoint Ltd | Refrigerator/freezer units |
| JPS6038560A (en) * | 1983-08-11 | 1985-02-28 | 三菱電機株式会社 | Two-step compression refrigerator |
| US4947655A (en) * | 1984-01-11 | 1990-08-14 | Copeland Corporation | Refrigeration system |
| JPH0476358A (en) * | 1990-07-18 | 1992-03-11 | Mitsubishi Electric Corp | Device in refrigerating cycle |
| JPH04313646A (en) * | 1991-04-10 | 1992-11-05 | Matsushita Electric Ind Co Ltd | Heat pump type air conditioner |
| US5095712A (en) * | 1991-05-03 | 1992-03-17 | Carrier Corporation | Economizer control with variable capacity |
| US5150581A (en) * | 1991-06-24 | 1992-09-29 | Baltimore Aircoil Company | Head pressure controller for air conditioning and refrigeration systems |
| CA2080219A1 (en) * | 1991-11-04 | 1993-05-05 | Leroy John Herbst | Household refrigerator with improved refrigeration circuit |
| US5191776A (en) * | 1991-11-04 | 1993-03-09 | General Electric Company | Household refrigerator with improved circuit |
| JPH08144971A (en) * | 1994-11-15 | 1996-06-04 | Nippon Soken Inc | Scroll type compressor and refrigerating cycle |
| US5603227A (en) * | 1995-11-13 | 1997-02-18 | Carrier Corporation | Back pressure control for improved system operative efficiency |
| KR100393776B1 (en) * | 1995-11-14 | 2003-10-11 | 엘지전자 주식회사 | Refrigerating cycle device having two evaporators |
| US6032472A (en) * | 1995-12-06 | 2000-03-07 | Carrier Corporation | Motor cooling in a refrigeration system |
| US5899091A (en) * | 1997-12-15 | 1999-05-04 | Carrier Corporation | Refrigeration system with integrated economizer/oil cooler |
| EP0924478A3 (en) * | 1997-12-15 | 2000-03-22 | Carrier Corporation | Refrigeration system with integrated oil cooling heat exchanger |
| US6138467A (en) * | 1998-08-20 | 2000-10-31 | Carrier Corporation | Steady state operation of a refrigeration system to achieve optimum capacity |
| US6324858B1 (en) * | 1998-11-27 | 2001-12-04 | Carrier Corporation | Motor temperature control |
| JP4178646B2 (en) * | 1999-02-09 | 2008-11-12 | 松下電器産業株式会社 | refrigerator |
| WO2001022008A1 (en) * | 1999-09-24 | 2001-03-29 | Sanyo Electric Co., Ltd. | Multi-stage compression refrigerating device |
| US6202438B1 (en) * | 1999-11-23 | 2001-03-20 | Scroll Technologies | Compressor economizer circuit with check valve |
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| JP2001317832A (en) * | 2000-05-10 | 2001-11-16 | Daikin Ind Ltd | Air conditioning apparatus |
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| JP4459776B2 (en) * | 2004-10-18 | 2010-04-28 | 三菱電機株式会社 | Heat pump device and outdoor unit of heat pump device |
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-
2005
- 2005-01-31 JP JP2005024057A patent/JP2006207974A/en active Pending
-
2006
- 2006-01-27 CN CNA2006100047573A patent/CN1815106A/en active Pending
- 2006-01-27 KR KR1020060008601A patent/KR100695370B1/en not_active IP Right Cessation
- 2006-01-30 EP EP06001872A patent/EP1696188A3/en not_active Withdrawn
- 2006-01-31 US US11/342,826 patent/US20060168997A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| KR100695370B1 (en) | 2007-03-16 |
| JP2006207974A (en) | 2006-08-10 |
| KR20060088039A (en) | 2006-08-03 |
| EP1696188A3 (en) | 2008-02-13 |
| EP1696188A2 (en) | 2006-08-30 |
| US20060168997A1 (en) | 2006-08-03 |
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