US20080115507A1 - Heat Pump - Google Patents
Heat Pump Download PDFInfo
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- US20080115507A1 US20080115507A1 US11/659,787 US65978705A US2008115507A1 US 20080115507 A1 US20080115507 A1 US 20080115507A1 US 65978705 A US65978705 A US 65978705A US 2008115507 A1 US2008115507 A1 US 2008115507A1
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- Prior art keywords
- heat pump
- space
- compressor
- ranque
- generator
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- F25B9/02—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point using Joule-Thompson effect; using vortex effect
- F25B9/04—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point using Joule-Thompson effect; using vortex effect using vortex effect
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
Definitions
- the present invention relates to a heat pump that is intended to operate in a space, said heat pump comprising a compressor and an inlet conduit for supplying air/gas to the compressor.
- heat pumps that normally comprise a compressor, an evaporator, a condenser and an expansion valve.
- heat pumps with air it is a well known fact that they have low efficiency when the outdoor air has low temperature.
- a Ranque generator is a device that was invented by George Ranque in the 1930's, a Ranque generator generally having the function that it divides a compressed air- or gas stream into a cold air- or gas stream and a hot air- or gas stream.
- the Ranque generator will be described more in detail below.
- centrifuge for biological products comprising a device for cooling the space where centrifuging takes place.
- a Ranque generator is included, said generator producing the cold air that is used in the cooling.
- a primary object of the present invention is to present a heat pump of the type defined above, said heat pump having a coefficient of performance that is higher than one.
- a further object of the present invention is to present a heat pump that is extremely environment friendly since it is completely free from CFC or other gases that are hazardous to the environment when it is used in an open system. If it is used in a closed system the gases that are used will not come into contact with the environment.
- Still an object of the present invention is to present a heat pump having small dimensions.
- a further object of the present invention is to present a heat pump that is easy to install.
- At least the primary object of the present invention is realized by means of a device that has been given the features of the appending independent claim 1 .
- Preferred embodiments are defined in the dependent claims.
- FIG. 1 schematically shows a Ranque generator
- FIG. 1 shows the schematic structure of a first embodiment of a heat pump according to the present invention
- FIG. 2 shows the schematic structure of a second embodiment of a heat pump according to the present invention
- FIG. 3 shows the schematic structure of a third embodiment of a heat pump according to the present invention
- FIG. 4 shows the schematic structure of a fourth embodiment of a heat pump according to the present invention.
- FIG. 5 shows the schematic structure of a fifth embodiment of a heat pump according to the present invention.
- FIG. 6 shows the schematic structure of a sixth embodiment of a heat pump according to present invention.
- the Ranque generator shown in figure A comprises a chamber C, a first outlet pipe P 1 emanating from the chamber C and a second outlet pipe P 2 emanating from the chamber, said outlet pipes P 1 and P 2 generally being attached to opposite sides of the chamber C.
- the chamber C defines a space that generally has circular cylindrical cross section relative to an axis in the plane of the paper. In operation of the Ranque generator compressed air or gas is supplied to the chamber C.
- the supplied air or gas will flow along the circular cylindrical limiting surface of the chamber at a high speed, about 1.000.000 revolutions/min. Due to means provided in the chamber C there is a division in an outer hot air- or gas stream and an inner cold air- or gas stream. Both these air- or gas streams are deviated in different directions via the two outlet pipes P 1 and P 2 . The difference in temperature between the cold air- or gas stream and the hot air- or gas stream is considerable. In exemplifying and non-restricting purpose it may be mentioned that if compressed air of 7 bar is supplied to the chamber C a hot air stream could be achieved with a temperature that is about 50° C. higher than the supplied air and a cold air stream with a temperature that is about 50° C. lower than the supplied air. If there is a division in hot and cold air streams of different volume the difference in temperature relative to the supplied air will decrease if the volume increases.
- the Ranque generator represents prior art and will not be described in further detail.
- FIG. 1 a space S is shown schematically, a first embodiment of a heat pump according to the present invention being provided in said space S.
- the space S may for instance constitute a residential building.
- the heat pump according to the present invention shown in FIG. 1 , comprises a Ranque generator 1 , a compressor 3 , a connection conduit 5 to the Ranque generator 1 , a first outlet conduit 7 from the Ranque generator 1 , a second outlet conduit 9 from the Ranque generator 1 and a first inlet conduit 10 to the compressor 3 .
- connection conduit 5 extends between the compressor 3 and the Ranque generator 1 .
- the first outlet conduit 7 emerges in the space S while the other outlet conduit extends through the limiting wall of the space S and thus emerges in the open air.
- the first inlet conduit 10 extends from the open air outside the space S to the compressor 3 .
- the components in the dashed square in FIG. 1 are thus included in the heat pump according to the present invention.
- the heat pump shown in FIG. 1 functions in such a way that outside air is supplied to the compressor 3 via the first inlet conduit 10 .
- the compressor 3 compresses this outside air and thus supplies compressed air to the Ranque generator 1 .
- the Ranque generator 1 transfers this compressed air into a hot air stream, that is discharged into the space S via the first outlet conduit 7 , and a cold air stream that is supplied to the outdoor air via the second outlet conduit 9 .
- the enthalpy in the hot air stream will thus be of use to the space S.
- the heat that is generated when the compressor 3 compresses the air will be of use to the space S. Losses due to the efficiency of the compressor 3 is also of use to the space S in the shape of heat.
- the heat pump according to the present invention comprises the corresponding components as the embodiment according to FIG. 1 , i.e. a Ranque generator 101 , 1 compressor 103 , a connection conduit 105 to the Ranque generator 101 , a second outlet conduit 109 from the Ranque generator 101 and a first inlet conduit 110 to the compressor 103 .
- the heat pump shown in FIG. 2 functions in such a way that indoor air is supplied to the compressor 103 via the first inlet conduit 110 .
- the compressor 103 compresses this indoor air and thus supplies compressed air to the Ranque generator 101 .
- the Ranque generator 101 transfers this compressed air into a hot air stream, that is discharged into the space S 1 via the first outlet conduit 107 , and a cold air stream that is supplied to the outdoor air via the second outlet conduit 109 .
- FIG. 3 of a heat pump according to the present invention rely on a closed system that comprises two heat exchangers.
- the components in the dashed square of FIG. 3 are thus included in the heat pump according to the present invention.
- the heat pump according to FIG. 3 is installed in a space S 2 and also comprises a Ranque generator 201 and a compressor 203 .
- a connection conduit 205 extends from the compressor 203 to the Ranque generator 201 .
- From the hot side of the Ranque generator 201 a first outlet conduit 207 exits, said first outlet conduit 207 being connected to a first heat exchanger 211 that is located inside the space S 2 .
- a first inlet conduit 210 to the compressor 203 exits from a second heat exchanger 213 that is located outside the space S 2 .
- a second inlet conduit 212 extends from the first heat exchanger 211 and joins the first inlet conduit 210 upstream the compressor 203 .
- the second heat exchanger 213 is connected to the cold side of the Ranque generator 201 , this being effected by means of a second outlet conduit 209 from the Ranque generator 201 .
- the heat pump shown schematically in FIG. 3 , functions in the following way. Air/gas is supplied to the compressor 203 via the first inlet conduit 210 and a second inlet conduit 212 , this supplied air/gas is a mixture of air/gas from the first heat exchanger 211 and air/gas from the second heat exchanger 213 .
- the air/gas that comes from the second heat exchanger 213 is heated by the outdoor air while the air/gas that comes from the first heat exchanger 211 has emitted heat to the space S 2 , i.e. said air/gas is chilled.
- These two volumes of air/gas are now mixed and supplied to the compressor 203 and then the supplied mixture is compressed by the compressor 203 .
- compressed air is supplied to the Ranque generator 201 , said supplied compressed air in a known way being divided into a hot air stream that is deflected via the first outlet conduit 207 and a cold air stream that is deflected via the second outlet conduit 209 .
- the hot air-/gas stream that is discharged via the first outlet conduit 207 passes the first heat exchanger 211 and the hot air-/gas stream emits heat to the space S 2 .
- the chilled air-/gas stream then continues in the second inlet conduit 212 and is mixed with the air-/gas stream in the first inlet conduit 210 , upstream the compressor 203 .
- the cold air/gas that is discharged from the Ranque generator 201 flows in the second outlet conduit 209 and passes through the second heat exchanger 213 . Since the air/gas that flows in the outlet conduit 209 is substantially chilled it will be heated by the outdoor air when passing through the second heat exchanger 213 , even if the outdoor air has a comparatively low temperature. When the air/gas has pass the second heat exchanger 213 it is supplied to the compressor 203 via the first inlet conduit 210 . As has been pointed out above a mixture will then take place with the air/gas that emanates from the first heat exchanger 211 .
- the embodiment of a heat pump according to the present invention that is shown in FIG. 4 is a variant of the embodiment according to FIG. 3 .
- the heat pump according to FIG. 4 is installed in a space S 3 , said heat pump also comprising a Ranque generator 301 and a compressor 303 .
- a connection conduit 305 extends from the compressor 303 to the Ranque generator 301 .
- From the hot side of the Ranque generator 301 a first outlet conduit 307 exits, said first outlet conduit 307 being connected to a first heat exchanger 311 that is located inside the space S 3 .
- a first inlet conduit 310 to the compressor 303 emanates from a second heat exchanger 313 that is located outside the space S 3 .
- a second inlet conduit 312 extends from the first heat exchanger 313 and joins the first inlet conduit 310 to the compressor 303 .
- This first inlet conduit 310 emanates from the first heat exchanger 311 that is located outside the space S 3 .
- the first inlet conduit 310 is “coiled” around the compressor 303 and the connection conduit 305 before the first inlet conduit 310 joins the second inlet conduit 312 upstream the compressor 303 .
- This arrangement has the aim to cool the connection conduit 305 and the compressor 303 . Thereby, the heat losses are reduced and the temperature in the first outlet conduit 307 is raised.
- the second heat exchanger 313 is connected to the cold side of the Ranque generator 301 , this being effected by means of a second outlet conduit 309 from the Ranque generator 301 .
- FIG. 4 The embodiment of a heat pump according to the present invention that is described in FIG. 4 functions in principle in the same way as the embodiment according to FIG. 3 .
- a conventional air heat pump is completed with a heat pump according to the present invention.
- the conventional air heat pump according to FIG. 5 comprises a third heat exchanger 415 and a fourth heat exchanger 416 .
- the third heat exchanger 415 that in principle constitutes an evaporator, is located in the open air outside a space in which the conventional air heat pump is operating while the fourth heat exchanger 416 , that in principle constitutes a condenser, is located in the air in the space, in which the conventional air heat pump operates.
- a first transferring conduit 417 extends from the third heat exchanger 415 to the fourth heat exchanger 416 .
- a compressor 418 is provided, said compressor 418 being related to the conventional air heat pump.
- a second transferring conduit 419 extends from the fourth heat exchanger 416 to the third heat exchanger 415 .
- An expansion valve 420 is provided in the second transferring conduit 419 .
- a first fan 421 is related to the third heat exchanger 415 and a second fan 422 is related to the fourth heat exchanger 416 . These fans 421 , 422 guarantee sufficient air movement in connection with the respective heat exchanger 415 , 416 .
- an energy storing medium is brought to circulate through the third heat exchanger 415 , the first transferring conduit 417 , the fourth heat exchanger 416 and the second transferring conduit 419 .
- the energy storing medium e.g.
- the CFC is compressed by the compressor 418 that is related to the air heat pump before the energy storing medium passes through the fourth heat exchanger 416 where heat is emitted to the space, in which the conventional heat pump operates.
- the third heat exchanger 415 absorbs heat from the outdoor air. At low temperatures, especially below ⁇ 10° C., the energy exchange is low.
- a further heat pump is used in accordance with the principle of the present invention, said further heat pump comprising a Ranque generator.
- the outdoor third heat exchanger 415 with its components, is located in a space S 4 , in which also the further heat pump is located, said further heat pump comprising a Ranque generator.
- an air stream takes place through the space S 4 in connection with the operation of the first fan 421 .
- FIG. 5 it is schematically shown how a heat pump according to the present invention is provided in the space S 4 .
- This heat pump comprises a Ranque generator 401 , a compressor 403 , a connection conduit 405 to the Ranque generator 401 , a first outlet conduit 407 from the Ranque generator 401 , a second outlet conduit 409 from the Ranque generator 401 and a first inlet conduit 410 to the compressor 403 .
- the hot air stream that emanates from the Ranque generator 401 is discharged via the first outlet conduit 407 and heats the air that surrounds the third heat exchanger 415 .
- the cold air stream that emanates from the Ranque generator 401 is discharged via the second outlet conduit 409 that emanates outside the space S 4 .
- FIG. 6 only one space S 5 is shown, said space S 5 holding the third heat exchanger 515 of a conventional air heat pump and a heat pump according to the present invention.
- a compressor 518 and an expansion valve 520 are related to the conventional air heat pump.
- the first fan 521 heats a first portion of the third heat exchanger 515 while the heat pump according to the present invention heats a second portion of the third heat exchanger 515 .
- the heat pump according to the present invention comprises a Ranque generator 501 , a compressor 503 , a connection conduit 505 to the Ranque generator 501 , a first outlet conduit 507 from the Ranque generator 501 , a second outlet conduit 509 from the Ranque generator 501 and a first inlet conduit 510 to the compressor 503 .
- the hot air stream that exits from the Ranque generator 501 is discharged via the first outlet conduit 507 and heats the upper portion of the third heat exchanger 515 .
- the cold air stream that exits from the Ranque generator 501 is discharged via the second outlet conduit 509 that emerges outside the space S 5 .
- the compressors 503 and 518 are driven by a common power source, this being illustrated by the interconnection of the compressors 503 and 518 .
- the compressors 503 and 518 each are related to a separate power source.
- said heat pump comprising a Ranque generator and a compressor.
- a worm compressor is used that has a high capacity and a regular air flow rate. The heat that is generated when the compressor compresses the air will be of use to the space, in which the heat pump is installed.
- the compressor 3 ; 103 ; 203 ; 303 ; 403 ; 503 is located in the space S; S 1 ; S 2 ; S 3 ; S 4 ; S 5 .
- the compressor is located outside the space, in which the heat pump operates.
- the heat pump system according to the present invention may for instance be equipped with a temperature sensor to register the temperature difference between the hot and the cold side of the Ranque generator 1 ; 101 ; 201 ; 301 ; 401 ; 501 , the rotational frequency of the compressor 3 ; 103 ; 203 ; 303 ; 403 ; 503 being regulated dependent on said measured temperature difference.
- the compressor 3 ; 103 ; 203 ; 303 ; 403 ; 503 that is used in a heat pump according to the present invention may be water cooled, the heat that is generated adjacent to the compressor 3 ; 103 ;, 203 ; 303 ; 403 ; 503 may be taken care of via a heat exchanger.
- a second heat exchanger 213 is provided outside the space S 2 , in the free air.
- This second heat exchanger 213 may also the located in water, for instance in a lake, it might be embedded in the ground or located in the bedrock. Is also feasible that the second the exchanger 213 is designed as a solar collector.
- the purpose of the exemplified arrangements is to achieve an improved heating of the air/gas compared to the location of the second heat exchanger 213 in the open air.
- the first heat exchanger 211 is used to heat hot service water or water in a system for hot water heating.
- the second outlet conduit 209 is used to cool for instance a refrigerator, a freezer or an underground storehouse.
- one or both heat exchangers are integrated with the heat pump according to the present invention, i.e. the compressor, the Ranque generator and at least one of the heat exchangers form a unit in the space, in which the heat pump is intended to operate. If the heat exchanger that is connected to the cold side of the Ranque generator is integrated in this unit the cold air that is generated in the area of this heat exchanger must be taken care of in a suitable way, this being for instance effected by means of a fan that transports the cold air to the outside of the space, in which the heat pump operates.
- FIGS. 5 and 6 are illustrated with a conventional air heat pump.
- the heat pump according to the present invention cooperates with some other type of conventional heat pump, for instance an air-water heat pump or a geothermal heat pump.
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Abstract
A heat pump intended to operate in a space (S), includes a compressor (3), preferably located in the space (S), and a first inlet conduit (10) for supplying air/gas to the compressor (3). The heat pump also includes a Ranque generator (1), a connection conduit (5) extending between the compressor (3) and the Ranque generator (1), the connection conduit (5) transferring compressed air/gas to the Ranque generator (1), a first outlet conduit (7) for air/gas emanating from the hot side of the Ranque generator (1), the first outlet conduit (7) emerging inside the space (S) or being connected to a first heat exchanger (211) inside the space (S2), and a second outlet conduit (9) for air/gas emanating from the cold side of the Ranque generator (1), the second outlet conduit (9) emerging outside the space (S).
Description
- The present invention relates to a heat pump that is intended to operate in a space, said heat pump comprising a compressor and an inlet conduit for supplying air/gas to the compressor.
- It is previously known a great number of different heat pumps that normally comprise a compressor, an evaporator, a condenser and an expansion valve. As regards heat pumps with air it is a well known fact that they have low efficiency when the outdoor air has low temperature.
- A Ranque generator is a device that was invented by George Ranque in the 1930's, a Ranque generator generally having the function that it divides a compressed air- or gas stream into a cold air- or gas stream and a hot air- or gas stream. The Ranque generator will be described more in detail below.
- From for instance U.S. Pat. No. 6,334,841 a centrifuge for biological products is previously known, said centrifuge comprising a device for cooling the space where centrifuging takes place. In this last mentioned device a Ranque generator is included, said generator producing the cold air that is used in the cooling.
- A primary object of the present invention is to present a heat pump of the type defined above, said heat pump having a coefficient of performance that is higher than one.
- A further object of the present invention is to present a heat pump that is extremely environment friendly since it is completely free from CFC or other gases that are hazardous to the environment when it is used in an open system. If it is used in a closed system the gases that are used will not come into contact with the environment.
- Still an object of the present invention is to present a heat pump having small dimensions.
- A further object of the present invention is to present a heat pump that is easy to install.
- At least the primary object of the present invention is realized by means of a device that has been given the features of the appending
independent claim 1. Preferred embodiments are defined in the dependent claims. - Below a number of embodiments of the invention will be described, reference being made to the accompanying drawings, where:
- Figure A schematically shows a Ranque generator;
-
FIG. 1 shows the schematic structure of a first embodiment of a heat pump according to the present invention; -
FIG. 2 shows the schematic structure of a second embodiment of a heat pump according to the present invention; -
FIG. 3 shows the schematic structure of a third embodiment of a heat pump according to the present invention; -
FIG. 4 shows the schematic structure of a fourth embodiment of a heat pump according to the present invention; -
FIG. 5 shows the schematic structure of a fifth embodiment of a heat pump according to the present invention; and -
FIG. 6 shows the schematic structure of a sixth embodiment of a heat pump according to present invention. - The Ranque generator shown in figure A comprises a chamber C, a first outlet pipe P1 emanating from the chamber C and a second outlet pipe P2 emanating from the chamber, said outlet pipes P1 and P2 generally being attached to opposite sides of the chamber C. The chamber C defines a space that generally has circular cylindrical cross section relative to an axis in the plane of the paper. In operation of the Ranque generator compressed air or gas is supplied to the chamber C.
- The supplied air or gas will flow along the circular cylindrical limiting surface of the chamber at a high speed, about 1.000.000 revolutions/min. Due to means provided in the chamber C there is a division in an outer hot air- or gas stream and an inner cold air- or gas stream. Both these air- or gas streams are deviated in different directions via the two outlet pipes P1 and P2. The difference in temperature between the cold air- or gas stream and the hot air- or gas stream is considerable. In exemplifying and non-restricting purpose it may be mentioned that if compressed air of 7 bar is supplied to the chamber C a hot air stream could be achieved with a temperature that is about 50° C. higher than the supplied air and a cold air stream with a temperature that is about 50° C. lower than the supplied air. If there is a division in hot and cold air streams of different volume the difference in temperature relative to the supplied air will decrease if the volume increases.
- The Ranque generator represents prior art and will not be described in further detail.
- In
FIG. 1 a space S is shown schematically, a first embodiment of a heat pump according to the present invention being provided in said space S. The space S may for instance constitute a residential building. - The heat pump according to the present invention, shown in
FIG. 1 , comprises a Ranquegenerator 1, acompressor 3, aconnection conduit 5 to the Ranquegenerator 1, afirst outlet conduit 7 from the Ranquegenerator 1, asecond outlet conduit 9 from the Ranquegenerator 1 and afirst inlet conduit 10 to thecompressor 3. - The
connection conduit 5 extends between thecompressor 3 and the Ranquegenerator 1. Thefirst outlet conduit 7 emerges in the space S while the other outlet conduit extends through the limiting wall of the space S and thus emerges in the open air. Thefirst inlet conduit 10 extends from the open air outside the space S to thecompressor 3. The components in the dashed square inFIG. 1 are thus included in the heat pump according to the present invention. - The heat pump shown in
FIG. 1 functions in such a way that outside air is supplied to thecompressor 3 via thefirst inlet conduit 10. Thecompressor 3 compresses this outside air and thus supplies compressed air to the Ranquegenerator 1. In a way that has been described above the Ranquegenerator 1 transfers this compressed air into a hot air stream, that is discharged into the space S via thefirst outlet conduit 7, and a cold air stream that is supplied to the outdoor air via thesecond outlet conduit 9. - The enthalpy in the hot air stream will thus be of use to the space S. In this connection it should also be noticed that the heat that is generated when the
compressor 3 compresses the air will be of use to the space S. Losses due to the efficiency of thecompressor 3 is also of use to the space S in the shape of heat. - In the embodiment according to
FIG. 2 the heat pump according to the present invention comprises the corresponding components as the embodiment according toFIG. 1 , i.e. a Ranquegenerator compressor 103, a connection conduit 105 to the Ranquegenerator 101, asecond outlet conduit 109 from the Ranquegenerator 101 and afirst inlet conduit 110 to thecompressor 103. - The heat pump shown in
FIG. 2 functions in such a way that indoor air is supplied to thecompressor 103 via thefirst inlet conduit 110. Thecompressor 103 compresses this indoor air and thus supplies compressed air to the Ranquegenerator 101. In a way that has been described above the Ranquegenerator 101 transfers this compressed air into a hot air stream, that is discharged into the space S1 via thefirst outlet conduit 107, and a cold air stream that is supplied to the outdoor air via thesecond outlet conduit 109. - As regards the arrangement shown in
FIG. 2 no positive pressure is generated in the space S since the air that is supplied to thecompressor 103 constitutes indoor air that is taken from the space S1. If all air is taken from the space S1 a negative pressure will be generated in the space S1. This brings about that air will flow into the space S1 through vents and the like, a vent V1 being indicated inFIG. 2 . Since outdoor air is sucked in through the vent V1 the air change will generally be good in the embodiment according toFIG. 2 . - The embodiment shown in
FIG. 3 of a heat pump according to the present invention rely on a closed system that comprises two heat exchangers. The components in the dashed square ofFIG. 3 are thus included in the heat pump according to the present invention. The heat pump according toFIG. 3 is installed in a space S2 and also comprises a Ranquegenerator 201 and acompressor 203. Aconnection conduit 205 extends from thecompressor 203 to the Ranquegenerator 201. From the hot side of the Ranque generator 201 afirst outlet conduit 207 exits, saidfirst outlet conduit 207 being connected to afirst heat exchanger 211 that is located inside the space S2. A first inlet conduit 210 to thecompressor 203 exits from asecond heat exchanger 213 that is located outside the space S2. Asecond inlet conduit 212 extends from thefirst heat exchanger 211 and joins thefirst inlet conduit 210 upstream thecompressor 203. Thesecond heat exchanger 213 is connected to the cold side of the Ranquegenerator 201, this being effected by means of asecond outlet conduit 209 from the Ranquegenerator 201. - The heat pump, shown schematically in
FIG. 3 , functions in the following way. Air/gas is supplied to thecompressor 203 via thefirst inlet conduit 210 and asecond inlet conduit 212, this supplied air/gas is a mixture of air/gas from thefirst heat exchanger 211 and air/gas from thesecond heat exchanger 213. The air/gas that comes from thesecond heat exchanger 213 is heated by the outdoor air while the air/gas that comes from thefirst heat exchanger 211 has emitted heat to the space S2, i.e. said air/gas is chilled. These two volumes of air/gas are now mixed and supplied to thecompressor 203 and then the supplied mixture is compressed by thecompressor 203. From thecompressor 203 compressed air is supplied to theRanque generator 201, said supplied compressed air in a known way being divided into a hot air stream that is deflected via thefirst outlet conduit 207 and a cold air stream that is deflected via thesecond outlet conduit 209. - The hot air-/gas stream that is discharged via the
first outlet conduit 207 passes thefirst heat exchanger 211 and the hot air-/gas stream emits heat to the space S2. The chilled air-/gas stream then continues in thesecond inlet conduit 212 and is mixed with the air-/gas stream in thefirst inlet conduit 210, upstream thecompressor 203. - The cold air/gas that is discharged from the
Ranque generator 201 flows in thesecond outlet conduit 209 and passes through thesecond heat exchanger 213. Since the air/gas that flows in theoutlet conduit 209 is substantially chilled it will be heated by the outdoor air when passing through thesecond heat exchanger 213, even if the outdoor air has a comparatively low temperature. When the air/gas has pass thesecond heat exchanger 213 it is supplied to thecompressor 203 via thefirst inlet conduit 210. As has been pointed out above a mixture will then take place with the air/gas that emanates from thefirst heat exchanger 211. - The embodiment of a heat pump according to the present invention that is shown in
FIG. 4 is a variant of the embodiment according toFIG. 3 . The heat pump according toFIG. 4 is installed in a space S3, said heat pump also comprising aRanque generator 301 and acompressor 303. Aconnection conduit 305 extends from thecompressor 303 to theRanque generator 301. From the hot side of the Ranque generator 301 a first outlet conduit 307 exits, said first outlet conduit 307 being connected to afirst heat exchanger 311 that is located inside the space S3. Afirst inlet conduit 310 to thecompressor 303 emanates from asecond heat exchanger 313 that is located outside the space S3. Asecond inlet conduit 312 extends from thefirst heat exchanger 313 and joins thefirst inlet conduit 310 to thecompressor 303. Thisfirst inlet conduit 310 emanates from thefirst heat exchanger 311 that is located outside the space S3. Thefirst inlet conduit 310 is “coiled” around thecompressor 303 and theconnection conduit 305 before thefirst inlet conduit 310 joins thesecond inlet conduit 312 upstream thecompressor 303. This arrangement has the aim to cool theconnection conduit 305 and thecompressor 303. Thereby, the heat losses are reduced and the temperature in the first outlet conduit 307 is raised. Thesecond heat exchanger 313 is connected to the cold side of theRanque generator 301, this being effected by means of asecond outlet conduit 309 from theRanque generator 301. - The embodiment of a heat pump according to the present invention that is described in
FIG. 4 functions in principle in the same way as the embodiment according toFIG. 3 . - In the embodiment shown in
FIG. 5 a conventional air heat pump is completed with a heat pump according to the present invention. The conventional air heat pump according toFIG. 5 comprises athird heat exchanger 415 and afourth heat exchanger 416. Thethird heat exchanger 415, that in principle constitutes an evaporator, is located in the open air outside a space in which the conventional air heat pump is operating while thefourth heat exchanger 416, that in principle constitutes a condenser, is located in the air in the space, in which the conventional air heat pump operates. Afirst transferring conduit 417 extends from thethird heat exchanger 415 to thefourth heat exchanger 416. In this first transferring conduit 417 acompressor 418 is provided, saidcompressor 418 being related to the conventional air heat pump. Asecond transferring conduit 419 extends from thefourth heat exchanger 416 to thethird heat exchanger 415. Anexpansion valve 420 is provided in thesecond transferring conduit 419. Afirst fan 421 is related to thethird heat exchanger 415 and asecond fan 422 is related to thefourth heat exchanger 416. Thesefans respective heat exchanger third heat exchanger 415, thefirst transferring conduit 417, thefourth heat exchanger 416 and thesecond transferring conduit 419. The energy storing medium, e.g. CFC, is compressed by thecompressor 418 that is related to the air heat pump before the energy storing medium passes through thefourth heat exchanger 416 where heat is emitted to the space, in which the conventional heat pump operates. Thethird heat exchanger 415 absorbs heat from the outdoor air. At low temperatures, especially below −10° C., the energy exchange is low. In order to improve this energy exchange a further heat pump is used in accordance with the principle of the present invention, said further heat pump comprising a Ranque generator. As is evident fromFIG. 5 the outdoorthird heat exchanger 415, with its components, is located in a space S4, in which also the further heat pump is located, said further heat pump comprising a Ranque generator. As is indicated by the arrows A1 and A2 an air stream takes place through the space S4 in connection with the operation of thefirst fan 421. - In
FIG. 5 it is schematically shown how a heat pump according to the present invention is provided in the space S4. This heat pump comprises aRanque generator 401, acompressor 403, aconnection conduit 405 to theRanque generator 401, afirst outlet conduit 407 from theRanque generator 401, asecond outlet conduit 409 from theRanque generator 401 and afirst inlet conduit 410 to thecompressor 403. The hot air stream that emanates from theRanque generator 401 is discharged via thefirst outlet conduit 407 and heats the air that surrounds thethird heat exchanger 415. The cold air stream that emanates from theRanque generator 401 is discharged via thesecond outlet conduit 409 that emanates outside the space S4. - In the embodiment according to
FIG. 6 only one space S5 is shown, said space S5 holding thethird heat exchanger 515 of a conventional air heat pump and a heat pump according to the present invention. Acompressor 518 and anexpansion valve 520 are related to the conventional air heat pump. As is evident fromFIG. 6 thefirst fan 521 heats a first portion of thethird heat exchanger 515 while the heat pump according to the present invention heats a second portion of thethird heat exchanger 515. The heat pump according to the present invention comprises aRanque generator 501, acompressor 503, aconnection conduit 505 to theRanque generator 501, afirst outlet conduit 507 from theRanque generator 501, asecond outlet conduit 509 from theRanque generator 501 and afirst inlet conduit 510 to thecompressor 503. The hot air stream that exits from theRanque generator 501 is discharged via thefirst outlet conduit 507 and heats the upper portion of thethird heat exchanger 515. The cold air stream that exits from theRanque generator 501 is discharged via thesecond outlet conduit 509 that emerges outside the space S5. - In the embodiment shown in
FIG. 6 thecompressors compressors compressors - Generally, in the embodiments described above of a heat pump according to the present invention, said heat pump comprising a Ranque generator and a compressor. Preferably, a worm compressor is used that has a high capacity and a regular air flow rate. The heat that is generated when the compressor compresses the air will be of use to the space, in which the heat pump is installed.
- In the embodiments of the invention described above the
compressor 3; 103; 203; 303; 403; 503 is located in the space S; S1; S2; S3; S4; S5. However, within the scope of the present invention is also feasible that the compressor is located outside the space, in which the heat pump operates. - The heat pump system according to the present invention may for instance be equipped with a temperature sensor to register the temperature difference between the hot and the cold side of the
Ranque generator 1; 101; 201; 301; 401; 501, the rotational frequency of thecompressor 3; 103; 203; 303; 403; 503 being regulated dependent on said measured temperature difference. - The
compressor 3; 103; 203; 303; 403; 503 that is used in a heat pump according to the present invention may be water cooled, the heat that is generated adjacent to thecompressor 3; 103;, 203; 303; 403; 503 may be taken care of via a heat exchanger. - In the embodiment according to
FIG. 3 asecond heat exchanger 213 is provided outside the space S2, in the free air. Thissecond heat exchanger 213 may also the located in water, for instance in a lake, it might be embedded in the ground or located in the bedrock. Is also feasible that the second theexchanger 213 is designed as a solar collector. Generally, the purpose of the exemplified arrangements is to achieve an improved heating of the air/gas compared to the location of thesecond heat exchanger 213 in the open air. - In the embodiment according to
FIG. 3 it is also feasible, within the scope of the present invention, that thefirst heat exchanger 211 is used to heat hot service water or water in a system for hot water heating. - In the embodiment according to
FIG. 3 it is feasible, within the scope of present invention, that thesecond outlet conduit 209 is used to cool for instance a refrigerator, a freezer or an underground storehouse. - Within the scope of the present invention is also feasible that one or both heat exchangers are integrated with the heat pump according to the present invention, i.e. the compressor, the Ranque generator and at least one of the heat exchangers form a unit in the space, in which the heat pump is intended to operate. If the heat exchanger that is connected to the cold side of the Ranque generator is integrated in this unit the cold air that is generated in the area of this heat exchanger must be taken care of in a suitable way, this being for instance effected by means of a fan that transports the cold air to the outside of the space, in which the heat pump operates.
- The embodiments shown in
FIGS. 5 and 6 are illustrated with a conventional air heat pump. Within the scope of the present invention it is however feasible that the heat pump according to the present invention cooperates with some other type of conventional heat pump, for instance an air-water heat pump or a geothermal heat pump.
Claims (15)
1. Heat pump that is intended to operate in a space (S; S1; S2; S3; S4; S5), said heat pump comprising a compressor (3; 103; 203; 303; 403; 503) and a first inlet conduit (10; 110; 210; 310; 410; 510) for supplying air/gas to the compressor (3; 103; 203; 303; 403; 503), characterised in that the heat pump comprises a Ranque generator (1; 101; 201; 301; 401; 501), a connection conduit (5; 105; 205; 305; 405; 505) extending between the compressor (3; 103; 2203; 303; 403; 503) and the Ranque generator (1; 101; 201; 301; 401; 501) to transfer compressed air/gas to the Ranque generator (1; 101; 201; 301; 401; 501), a first outlet conduit (7; 107; 207; 307; 407; 507) for air/gas emanating from the hot side of the Ranque generator (1; 101; 201; 301; 401; 501), said first outlet conduit (7; 107; 207; 307; 407; 507) emerging inside the space (S; S1; S4; S5) or being connected to a first heat exchanger (211; 311) inside the space (S2; S3), and a second outlet conduit for air/gas emanating from the cold side of the Ranque generator (1; 101; 201; 301; 401; 501), said second outlet conduit (9; 109; 209; 309; 409; 509) emerging outside the space (S; S1; S4; S5) or being connected to a second heat exchanger (213; 313).
2. Heat pump according to claim 1 , characterised in that the second heat exchanger (213; 313) is located outside the space (S2; S3).
3. Heat pump according to claim 1 , characterised in that the inlet of the inlet conduit (10; 410; 510) is located in the open air outside the space (S; S4; S5).
4. Heat pump according to claim 1 , characterised in that the inlet of the first inlet conduit (110) is located in the open air inside the space (S1).
5. Heat pump according to claim 1 , characterised in that the first inlet conduit (210; 310), at its end remote from the compressor (203; 303), is connected to the second heat exchanger (213; 313) outside the space (S2; S3).
6. Heat pump according to claim 5 , characterised in that the first inlet conduit (310) extends around the compressor (303) and the connection conduit (305), said connection conduit (305) transferring compressed air/gas to the Ranque generator (301).
7. Heat pump according to claim 5 , characterised in that a second inlet conduit (212; 312) that emanates from the first heat exchanger (211; 311) joins the first inlet conduit (210; 310) upstream the compressor (203; 303).
8. Heat pump according to claim 1 , characterised in that the compressor constitutes a worm compressor (3; 103; 203; 303; 403; 503).
9. Heat pump according to claim 1 , characterised in that it comprises a temperature sensor to register the temperature difference between the hot and cold side of the Ranque generator (1; 101; 201; 301; 401; 501), and that the heat pump also comprises means to regulate the rotational frequency of the compressor (3; 103, 203, 303; 403; 503) dependent on the measured temperature difference.
10. Heat pump according to claim 1 , characterised in that the space (S4; S5) also includes a third heat exchanger (415; 515) that constitutes a part of a conventional heat pump.
11. Heat pump according to claim 2 , characterised in that the inlet of the inlet conduit (10; 410; 510) is located in the open air outside the space (S; S4; S5).
12. Heat pump according to claim 2 , characterised in that the inlet of the inlet conduit (10; 410; 510) is located in the open air outside the space (S; S4; S5).
13. Heat pump according to claim 2 , characterised in that the inlet of the inlet conduit (10; 410; 510) is located in the open air outside the space (S; S4; S5).
14. Heat pump according to claim 13 , characterised in that the first inlet conduit (310) extends around the compressor (303) and the connection conduit (305), said connection conduit (305) transferring compressed air/gas to the Ranque generator (301).
15. Heat pump according to claim 6 , characterised in that a second inlet conduit (212; 312) that emanates from the first heat exchanger (211; 311) joins the first inlet conduit (210; 310) upstream the compressor (203; 303).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0402006-1 | 2004-08-12 | ||
SE0402006A SE0402006L (en) | 2004-08-12 | 2004-08-12 | Heat pump |
PCT/SE2005/001199 WO2006016847A1 (en) | 2004-08-12 | 2005-08-11 | Heat pump |
Publications (1)
Publication Number | Publication Date |
---|---|
US20080115507A1 true US20080115507A1 (en) | 2008-05-22 |
Family
ID=32960384
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/659,787 Abandoned US20080115507A1 (en) | 2004-08-12 | 2005-08-11 | Heat Pump |
Country Status (5)
Country | Link |
---|---|
US (1) | US20080115507A1 (en) |
EP (1) | EP1792127A1 (en) |
JP (1) | JP2008510121A (en) |
SE (1) | SE0402006L (en) |
WO (1) | WO2006016847A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102072677A (en) * | 2010-12-30 | 2011-05-25 | 北京雪迪龙科技股份有限公司 | Vortex cooler |
US20160085244A1 (en) * | 2014-09-24 | 2016-03-24 | Fisher Controls International Llc | Vortex tube temperature control for process control devices |
US9790972B2 (en) | 2013-06-25 | 2017-10-17 | Emerson Process Management Regulator Technologies, Inc. | Heated fluid regulators |
US10094597B2 (en) | 2014-09-24 | 2018-10-09 | Fisher Controls International Llc | Field instrument temperature apparatus and related methods |
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- 2005-08-11 JP JP2007525576A patent/JP2008510121A/en active Pending
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Also Published As
Publication number | Publication date |
---|---|
SE526649C2 (en) | 2005-10-18 |
WO2006016847A1 (en) | 2006-02-16 |
JP2008510121A (en) | 2008-04-03 |
EP1792127A1 (en) | 2007-06-06 |
SE0402006L (en) | 2005-10-18 |
SE0402006D0 (en) | 2004-08-12 |
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