WO2022113815A1 - 冷凍機 - Google Patents
冷凍機 Download PDFInfo
- Publication number
- WO2022113815A1 WO2022113815A1 PCT/JP2021/042020 JP2021042020W WO2022113815A1 WO 2022113815 A1 WO2022113815 A1 WO 2022113815A1 JP 2021042020 W JP2021042020 W JP 2021042020W WO 2022113815 A1 WO2022113815 A1 WO 2022113815A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- refrigerant
- evaporator
- liquid
- compressor
- refrigerant liquid
- Prior art date
Links
- 238000005057 refrigeration Methods 0.000 title abstract description 17
- 239000003507 refrigerant Substances 0.000 claims abstract description 481
- 239000007788 liquid Substances 0.000 claims abstract description 230
- 238000010586 diagram Methods 0.000 description 12
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- CYRMSUTZVYGINF-UHFFFAOYSA-N trichlorofluoromethane Chemical compound FC(Cl)(Cl)Cl CYRMSUTZVYGINF-UHFFFAOYSA-N 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- 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
- F25B39/00—Evaporators; Condensers
-
- 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
-
- 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
-
- 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
- F25B41/385—Dispositions with two or more expansion means arranged in parallel on a refrigerant line leading to the same evaporator
-
- 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
- F25B41/39—Dispositions with two or more expansion means arranged in series, i.e. multi-stage expansion, on a refrigerant line leading to the same evaporator
-
- 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
- F25B5/04—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in series
-
- 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
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/02—Details of evaporators
- F25B2339/024—Evaporators with refrigerant in a vessel in which is situated a heat exchanger
- F25B2339/0242—Evaporators with refrigerant in a vessel in which is situated a heat exchanger having tubular elements
-
- 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
- F25B2341/00—Details of ejectors not being used as compression device; Details of flow restrictors or expansion valves
- F25B2341/001—Ejectors not being used as compression device
- F25B2341/0011—Ejectors with the cooled primary flow at reduced or low pressure
-
- 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
-
- 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
- F25B2400/23—Separators
-
- 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
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
-
- 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
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
Definitions
- the present disclosure relates to a refrigerator equipped with a liquid film type evaporator.
- the refrigerator is equipped with a compressor, a condenser, an expansion valve, and an evaporator.
- the compressor compresses the refrigerant
- the condenser heat-exchanges and condenses the high-temperature and high-pressure refrigerant
- the expansion valve expands the condensed liquid refrigerant
- the evaporator expands the refrigerant.
- the refrigerant is evaporated by exchanging heat with the medium to be cooled.
- the evaporator is used, for example, to cool the inside of the freezer.
- the present disclosure is to solve the above-mentioned problems, and an object of the present disclosure is to provide a refrigerator that suppresses an increase in size and cost of an apparatus.
- the refrigerator of the present disclosure for achieving the above object expands a compressor that compresses a refrigerant, a condenser that condenses the refrigerant compressed by the compressor, and the refrigerant condensed by the condenser.
- the refrigerator of the present disclosure it is possible to suppress the increase in size and cost of the apparatus.
- FIG. 1 is a schematic configuration diagram showing the refrigerator of the first embodiment.
- FIG. 2 is a schematic configuration diagram showing the refrigerator of the second embodiment.
- FIG. 3 is a schematic configuration diagram showing the refrigerator of the third embodiment.
- FIG. 4 is a schematic configuration diagram showing the refrigerator of the fourth embodiment.
- FIG. 5 is a schematic configuration diagram showing the refrigerator of the fifth embodiment.
- FIG. 6 is a schematic configuration diagram showing the refrigerator of the sixth embodiment.
- the present disclosure is not limited to this embodiment, and when there are a plurality of embodiments, the present embodiment also includes a combination of the respective embodiments. Further, the components in the embodiment include those that can be easily assumed by those skilled in the art, those that are substantially the same, that are, those in a so-called equal range.
- FIG. 1 is a schematic configuration diagram showing the refrigerator of the first embodiment.
- the refrigerator 10 includes a compressor 11, a condenser 12, an expansion valve (expansion) 13, an evaporator 14, and an ejector 15.
- a subcooler (heat exchanger) may be provided between the condenser 12 and the expansion valve 13.
- the compressor 11 is a single-stage compressor, and is driven by, for example, an electric motor 21.
- the compressor 11 is connected to the condenser 12 by the refrigerant path 31.
- the compressor 11 compresses the refrigerant gas (refrigerant) 101 to generate a high-temperature and high-pressure refrigerant gas (refrigerant) 102.
- the condenser 12 is connected to the expansion valve 13 by the refrigerant path 32.
- the condenser 12 cools the high-temperature and high-pressure refrigerant gas 102 compressed by the compressor 11 to condense it to generate the refrigerant liquid (refrigerant) 103.
- the expansion valve 13 is connected to the ejector 15 by the refrigerant path 33.
- the expansion valve 13 expands by depressurizing the refrigerant liquid 103 condensed by the condenser 12 to generate a low-pressure refrigerant liquid (refrigerant) 104.
- the ejector 15 is connected to the evaporator 14 by the refrigerant path 34.
- the ejector 15 injects the low-pressure refrigerant liquid 104 expanded by the expansion valve 13 onto the refrigerant path 34 side as the refrigerant liquid (refrigerant) 105.
- the ejector 15 sucks the refrigerant liquid (refrigerant) 106 stored in the evaporator 14 by utilizing the pressure difference between the refrigerant liquid 104 and the refrigerant liquid (refrigerant) 105.
- the evaporator 14 is connected to the compressor 11 by the refrigerant path 35.
- the evaporator 14 is a liquid film type.
- the refrigerant liquids 104 and 105 are a refrigerant liquid or a two-phase refrigerant.
- the evaporator 14 has a casing 22, a large number of heat transfer tubes 23, a refrigerant supply unit 24, and a refrigerant discharge unit 25.
- a large number of heat transfer tubes 23 are arranged inside the casing 22.
- a large number of heat transfer tubes 23 are arranged along the horizontal direction and at predetermined intervals from each other.
- a cooling medium flows inside a large number of heat transfer tubes 23.
- the refrigerant supply unit 24 is provided in the upper part of the casing 22 and is connected to the downstream end portion of the refrigerant path 34.
- the refrigerant discharge unit 25 is arranged on the upper part of the casing 22 adjacent to the refrigerant supply unit 24.
- the refrigerant discharge portion 25 is connected to the upstream end portion of the refrigerant path 35. Further, the lower part of the casing 22 and the ejector 15 are connected by a refrigerant path 36.
- the ejector 15 has, for example, a body, a diffuser, and a nozzle.
- a diffuser communicates with the body, and a nozzle is provided in the body.
- the refrigerant path 36 is connected to the body, the refrigerant path 34 is connected to the diffuser, and the refrigerant path 33 is connected to the nozzle. Therefore, when the refrigerant liquid 104 from the refrigerant path 33 is ejected from the nozzle at high speed, it is discharged from the diffuser to the refrigerant path 34 as the refrigerant liquid 105.
- the ejector 15 is not limited to this configuration.
- the evaporator 14 evaporates the refrigerant liquid 105 containing the refrigerant liquid 106 to generate the refrigerant gas (refrigerant) 101.
- the refrigerant supply unit 24 causes the refrigerant liquid 105 supplied from the refrigerant path 34 to flow down in the casing 22.
- the flowing refrigerant liquid 105 comes into contact with a large number of heat transfer tubes 23 through which the cooling medium flows, and a part of the refrigerant liquid 105 evaporates to become the refrigerant gas 101, and the rest becomes the refrigerant liquid 106 stored in the lower part of the casing 22.
- the refrigeration cycle by the refrigerator 10 is a single-stage refrigeration cycle.
- the compressor 11 compresses the refrigerant gas 101 from the evaporator 14 into a high-temperature and high-pressure refrigerant gas 102 (compression stroke).
- the condenser 12 condenses the high-temperature and high-pressure refrigerant gas 102 into a refrigerant liquid 103 (condensation stroke).
- the expansion valve 13 expands the condensed refrigerant liquid 103 to obtain a low-pressure refrigerant liquid 104 (expansion stroke).
- the ejector 15 ejects the low-pressure refrigerant liquid 104 toward the evaporator 14.
- the suction force generated by the ejection of the refrigerant liquid 104 acts on the refrigerant path 36, and the refrigerant liquid 106 stored in the lower part of the evaporator 14 is sucked through the refrigerant path 36. That is, the ejector 15 supplies the refrigerant liquid 106 stored in the evaporator 14 to the evaporator 14 together with the refrigerant liquid 104 expanded by the expansion valve 13.
- the evaporator 14 flows down the refrigerant liquid 105 from the refrigerant supply unit 24 and brings the liquid phase portion of the refrigerant liquid 105 into contact with a large number of heat transfer tubes 23 to generate the refrigerant gas 101 (evaporation stroke) and generate the refrigerant gas 101. Is supplied to the compressor 11. Further, in the evaporator 14, the unevaporated refrigerant liquid 106 is stored in the lower part of the casing 22, but as described above, it is returned to the refrigerant supply unit 24 by the ejector 15.
- the temperature and pressure of the refrigerant liquid 105 supplied to the evaporator 14 need to be adjusted to a predetermined temperature and a predetermined pressure.
- the temperature and pressure of the refrigerant liquid 105 supplied to the evaporator 14 have been adjusted by expanding the refrigerant liquid 103 with the expansion valve 13 to reduce the pressure.
- the temperature and pressure of the refrigerant liquid 105 supplied to the evaporator 14 are adjusted by expanding the refrigerant liquid 103 by the expansion valve 13 and the ejector 15 to reduce the pressure. That is, a part of the pressure loss in the expansion valve 13, which has been discarded in the past, is used as the operating power of the ejector 15.
- the refrigerant liquid 106 collected in the lower part of the evaporator 14 can be returned to the refrigerant supply unit 24 without using a separate pump or the like.
- the opening degree of the expansion valve 13 may be adjustable, and the pressure drop distribution by the expansion valve 13 and the ejector 15 may be adjustable.
- FIG. 2 is a schematic configuration diagram showing the refrigerator of the second embodiment.
- the members having the same functions as those of the first embodiment described above are designated by the same reference numerals, and detailed description thereof will be omitted.
- the refrigerator 10A includes a compressor 41, a condenser 12, an expansion valve 42, an evaporator 14, an ejector 15, and an economizer (first gas-liquid separator). ) 43.
- the compressor 41 is a multi-stage compressor (in this embodiment, a two-stage compressor), and has a first compressor 51 and a second compressor 52.
- the compressor 41 is driven by, for example, an electric motor 21.
- the first compressor 51 and the second compressor 52 are connected by a refrigerant path 53.
- the second compressor 52 is connected to the condenser 12 by the refrigerant path 31.
- the compressor 41 compresses the refrigerant gas 101 to generate a high-temperature and high-pressure refrigerant gas 102.
- the condenser 12 cools the high-temperature and high-pressure refrigerant gas 102 compressed by the compressor 41 to condense it to generate the refrigerant liquid 103.
- the expansion valve 42 has a first expansion valve 54 and a second expansion valve 55.
- the first expansion valve 54 and the second expansion valve 55 are arranged in series with the discharge path of the refrigerant liquid 103 condensed by the condenser 12.
- the economizer 43 is arranged between the first expansion valve 54 and the second expansion valve 55. That is, the condenser 12 is connected to the first expansion valve 54 by the refrigerant path 32.
- the first expansion valve 54 is connected to the economizer 43 by the refrigerant path 56.
- the economizer 43 is connected to the second expansion valve 55 by the refrigerant path 57, and is connected to the refrigerant path 53 by the refrigerant path 58.
- the second expansion valve 55 is connected to the ejector 15 by the refrigerant path 33.
- the first expansion valve 54 expands the refrigerant liquid 103 condensed by the condenser 12 to reduce the pressure to generate a low-pressure refrigerant liquid (refrigerant) 111.
- the economizer 43 separates the low-pressure refrigerant liquid 111 into a refrigerant liquid (refrigerant) 112 and a refrigerant gas (refrigerant) 113.
- the second expansion valve 55 expands the refrigerant liquid 112 to reduce the pressure to generate the low-pressure refrigerant liquid 104.
- the refrigerant gas 113 is supplied to the second compressor 52.
- the ejector 15 is connected to the refrigerant supply unit 24 of the evaporator 14 by the refrigerant path 34, and is connected to the lower part of the casing 22 by the refrigerant path 36.
- the ejector 15 injects the low-pressure refrigerant liquid 104 expanded by the second expansion valve 55 as the refrigerant liquid 105 toward the refrigerant path 34.
- the ejector 15 generates a flow velocity difference and a pressure difference in the refrigerant liquid 104 and sucks the refrigerant liquid 106 stored in the evaporator 14.
- the evaporator 14 is connected to the compressor 11 by the refrigerant path 35.
- the evaporator 14 is a liquid film type.
- the evaporator 14 evaporates the refrigerant liquid 105 including the refrigerant liquid 106 to generate the refrigerant gas 101.
- a part of the refrigerant liquid 105 evaporates to become the refrigerant gas 101 and is supplied to the compressor 41, and the rest becomes the refrigerant liquid 106 stored in the lower part of the casing 22.
- the refrigeration cycle by the refrigerator 10A is a two-stage compression two-stage expansion refrigeration cycle.
- the compressor 41 compresses the refrigerant gas 101 from the evaporator 14 into a high-temperature and high-pressure refrigerant gas 102.
- the condenser 12 condenses the high-temperature and high-pressure refrigerant gas 102 into a refrigerant liquid 103.
- the first expansion valve 54 expands the condensed refrigerant liquid 103 to obtain a low-pressure refrigerant liquid 111.
- the economizer 43 separates the low-pressure refrigerant liquid 111 into a refrigerant liquid 112 and a refrigerant gas (refrigerant) 113, and supplies the refrigerant gas 113 to the second compressor 52.
- the second expansion valve 55 expands the refrigerant liquid 112 to reduce the pressure to generate the low-pressure refrigerant liquid 104.
- the ejector 15 ejects the low-pressure refrigerant liquid 104 toward the evaporator 14 and sucks the refrigerant liquid 106 below the evaporator 14.
- the ejector 15 supplies the refrigerant liquid 106 stored in the evaporator 14 to the evaporator 14 together with the refrigerant liquid 104 expanded by the expansion valve 13.
- the evaporator 14 partially evaporates the refrigerant liquid 105 to generate the refrigerant gas 101, which is supplied to the compressor 11.
- the unevaporated refrigerant liquid 106 is stored in the lower part of the casing 22, but is returned to the refrigerant supply unit 24 by the ejector 15.
- FIG. 3 is a schematic configuration diagram showing the refrigerator of the third embodiment.
- the members having the same functions as those of the second embodiment described above are designated by the same reference numerals, and detailed description thereof will be omitted.
- the refrigerator 10B includes a compressor 41, a condenser 12, an expansion valve 44, an evaporator 14, an ejector 15, and an economizer (first heat exchanger). It is equipped with 45.
- the compressor 41 has a first compressor 51 and a second compressor 52.
- the first compressor 51 and the second compressor 52 are connected by a refrigerant path 53.
- the second compressor 52 is connected to the condenser 12 by the refrigerant path 31.
- the compressor 41 compresses the refrigerant gas 101 to generate a high-temperature and high-pressure refrigerant gas 102.
- the condenser 12 cools the high-temperature and high-pressure refrigerant gas 102 compressed by the compressor 41 to condense it to generate the refrigerant liquid 103.
- the expansion valve 44 has a first expansion valve 61 and a second expansion valve 62.
- the first expansion valve 61 and the second expansion valve 62 are arranged in parallel with the discharge path of the refrigerant liquid 103 condensed by the condenser 12.
- the economizer 45 is arranged between the first expansion valve 61 and the second expansion valve 62. That is, the condenser 12 is connected to the two branched refrigerant paths 63 and 64.
- One of the refrigerant paths 63 is connected to the first expansion valve 61, and the first expansion valve 61 is connected to the refrigerant path 53 by the refrigerant path 65.
- the other refrigerant path 64 is connected to the second expansion valve 62, and the second expansion valve 62 is connected to the ejector 15 by the refrigerant path 33.
- the economizer 45 is provided between the refrigerant paths 64 and 65.
- the first expansion valve 61 expands the refrigerant liquid 103 condensed by the condenser 12 to reduce the pressure to generate a low-pressure refrigerant liquid (refrigerant) 121.
- the economizer 45 generates a refrigerant gas (refrigerant) 122 by exchanging heat between the refrigerant liquid (second refrigerant) 103 flowing through the refrigerant path 64 and the refrigerant liquid (first refrigerant) 121 flowing through the refrigerant path 65. do.
- the refrigerant gas 122 is supplied to the second compressor 52.
- the second expansion valve 62 expands the refrigerant liquid 123 heat-exchanged by the economizer 45 to reduce the pressure to generate the low-pressure refrigerant liquid 104.
- the ejector 15 is connected to the refrigerant supply unit 24 of the evaporator 14 by the refrigerant path 34, and is connected to the lower part of the casing 22 by the refrigerant path 36.
- the ejector 15 injects the low-pressure refrigerant liquid 104 expanded by the second expansion valve 62 as the refrigerant liquid 105 toward the refrigerant path 34.
- the ejector 15 generates a flow velocity difference and a pressure difference in the refrigerant liquid 104 and sucks the refrigerant liquid 106 stored in the evaporator 14.
- the evaporator 14 is connected to the compressor 11 by the refrigerant path 35.
- the evaporator 14 is a liquid film type.
- the evaporator 14 evaporates the refrigerant liquid 105 including the refrigerant liquid 106 to generate the refrigerant gas 101.
- a part of the refrigerant liquid 105 evaporates to become the refrigerant gas 101 and is supplied to the compressor 41, and the rest becomes the refrigerant liquid 106 stored in the lower part of the casing 22.
- the refrigeration cycle by the refrigerator 10B is a two-stage compression one-stage expansion refrigeration cycle.
- the compressor 41 compresses the refrigerant gas 101 from the evaporator 14 into a high-temperature and high-pressure refrigerant gas 102.
- the condenser 12 condenses the high-temperature and high-pressure refrigerant gas 102 into a refrigerant liquid 103.
- the first expansion valve 61 expands the condensed refrigerant liquid 103 to obtain a low-pressure refrigerant liquid 121.
- the economizer 45 exchanges heat between the refrigerant liquid 103 and the refrigerant liquid 121 to generate the refrigerant gas 122, and supplies the refrigerant gas 122 to the second compressor 52.
- the second expansion valve 62 expands the refrigerant liquid 123 to reduce the pressure to generate the low-pressure refrigerant liquid 104.
- the ejector 15 ejects the low-pressure refrigerant liquid 104 toward the evaporator 14 and sucks the refrigerant liquid 106 below the evaporator 14. That is, the ejector 15 supplies the refrigerant liquid 106 stored in the evaporator 14 to the evaporator 14 together with the refrigerant liquid 104 expanded by the expansion valve 13.
- the evaporator 14 partially evaporates the refrigerant liquid 105 to generate the refrigerant gas 101, which is supplied to the compressor 11. Further, in the evaporator 14, the unevaporated refrigerant liquid 106 is stored in the lower part of the casing 22, but is returned to the refrigerant supply unit 24 by the ejector 15.
- FIG. 4 is a schematic configuration diagram showing the refrigerator of the fourth embodiment.
- the members having the same functions as those of the first embodiment described above are designated by the same reference numerals, and detailed description thereof will be omitted.
- the refrigerator 10C includes a compressor 11, a condenser 12, an expansion valve 13, an evaporator 14, an ejector 15, and an auxiliary pump 46.
- the compressor 11 is connected to the condenser 12 by the refrigerant path 31.
- the compressor 11 compresses the refrigerant gas 101 to generate a high-temperature and high-pressure refrigerant gas 102.
- the condenser 12 is connected to the expansion valve 13 by the refrigerant path 32.
- the condenser 12 cools the high-temperature and high-pressure refrigerant gas 102 compressed by the compressor 11 to condense it to generate the refrigerant liquid 103.
- the expansion valve 13 is connected to the ejector 15 by the refrigerant path 33.
- the expansion valve 13 expands the refrigerant liquid 103 condensed by the condenser 12 to reduce the pressure to generate the low-pressure refrigerant liquid 104.
- the ejector 15 is connected to the refrigerant supply unit 24 of the evaporator 14 by the refrigerant path 34, and is connected to the lower part of the casing 22 by the refrigerant path 36.
- the ejector 15 injects the low-pressure refrigerant liquid 104 expanded by the second expansion valve 62 as the refrigerant liquid 105 toward the refrigerant path 34.
- the ejector 15 generates a flow velocity difference and a pressure difference in the refrigerant liquid 104 and sucks the refrigerant liquid 106 stored in the evaporator 14.
- the auxiliary pump 46 is driven by an electric motor.
- the auxiliary pump 46 supplies the refrigerant liquid 106 stored in the evaporator 14 to the refrigerant path 34 as the discharge path of the ejector 15.
- the lower part of the casing 22 in the evaporator 14 and the refrigerant path 34 are connected by the refrigerant path 71.
- the auxiliary pump 46 is provided in the refrigerant path 71.
- the evaporator 14 is connected to the compressor 11 by the refrigerant path 35.
- the evaporator 14 is a liquid film type.
- the evaporator 14 evaporates the refrigerant liquid 105 including the refrigerant liquid 106 to generate the refrigerant gas 101.
- a part of the refrigerant liquid 105 evaporates to become the refrigerant gas 101 and is supplied to the compressor 41, and the rest becomes the refrigerant liquid 106 stored in the lower part of the casing 22.
- the refrigeration cycle by the refrigerator 10C is a single-stage refrigeration cycle.
- the compressor 41 compresses the refrigerant gas 101 from the evaporator 14 into a high-temperature and high-pressure refrigerant gas 102.
- the condenser 12 condenses the high-temperature and high-pressure refrigerant gas 102 into a refrigerant liquid 103.
- the expansion valve 13 expands the condensed refrigerant liquid 103 to obtain a low-pressure refrigerant liquid 104.
- the ejector 15 ejects the low-pressure refrigerant liquid 104 toward the evaporator 14 and sucks the refrigerant liquid 106 below the evaporator 14.
- the auxiliary pump 46 supplies the refrigerant liquid 106 stored in the evaporator 14 to the refrigerant path 34. That is, the refrigerant liquid 106 stored in the evaporator 14 is supplied to the evaporator 14 together with the refrigerant liquid 104 expanded by the expansion valve 13 by the ejector 15 and the auxiliary pump 46. The evaporator 14 partially evaporates the refrigerant liquid 105 to generate the refrigerant gas 101, which is supplied to the compressor 11. Further, in the evaporator 14, the unevaporated refrigerant liquid 106 is stored in the lower part of the casing 22, but is returned to the refrigerant supply unit 24 by the ejector 15 and the auxiliary pump 46.
- the refrigerant liquid 106 stored in the lower part of the evaporator 14 is returned to the refrigerant supply unit 24 of the evaporator 14 by the ejector 15 and the auxiliary pump 46. At this time, if the pressure difference between the inlet portion of the ejector 15 (outlet portion of the expansion valve 13) and the inlet portion of the evaporator 14 is equal to or more than a predetermined value, the refrigerant liquid 106 at the lower part of the evaporator 14 is evaporated only by the ejector 15. It can be returned to the refrigerant supply unit 24 of the vessel 14.
- the evaporator 15 alone uses only the required amount of the refrigerant liquid 106 at the lower part of the evaporator 14. It becomes difficult to return to the refrigerant supply unit 24 of the evaporator 14.
- the auxiliary pump 46 is auxiliaryly used, and the refrigerant liquid 106 at the lower part of the evaporator 14 is returned to the refrigerant supply unit 24 of the evaporator 14 by the ejector 15 and the auxiliary pump 46.
- the auxiliary pump 46 To operate. Further, when the refrigerating machine 10C is in partial load operation, the pressure difference between the inlet portion of the ejector 15 and the inlet portion of the evaporator 14 is small, and the required amount of the refrigerant liquid 106 at the lower part of the evaporator 14 is obtained only by operating the ejector 15. Only when it is difficult to return to the refrigerant supply unit 24 of the evaporator 14, the auxiliary pump 46 is operated.
- a sensor for detecting the storage amount of the refrigerant liquid 106 stored in the lower part of the casing 22 in the evaporator 14 is provided, and the control device is an auxiliary pump according to the storage amount of the refrigerant liquid 106 detected by the sensor.
- the operation of the 46 may be controlled. That is, the control device operates the auxiliary pump 46 when the storage amount of the refrigerant liquid 106 is preset and exceeds the upper limit storage amount, and when the storage amount of the refrigerant liquid 106 is preset and falls below the lower limit storage amount, the auxiliary pump 46 is assisted. The operation of the pump 46 is stopped.
- the control by the control device may be manually performed by the operator.
- FIG. 5 is a schematic configuration diagram showing the refrigerator of the fifth embodiment.
- the members having the same functions as those of the fourth embodiment described above are designated by the same reference numerals, and detailed description thereof will be omitted.
- the refrigerator 10D includes a compressor 11, a condenser 12, an expansion valve 13, an evaporator 14, an ejector 15, and a bubble pump (auxiliary pump) 47. To prepare for.
- the compressor 11 is connected to the condenser 12 by the refrigerant path 31.
- the compressor 11 compresses the refrigerant gas 101 to generate a high-temperature and high-pressure refrigerant gas 102.
- the condenser 12 is connected to the expansion valve 13 by the refrigerant path 32.
- the condenser 12 cools the high-temperature and high-pressure refrigerant gas 102 compressed by the compressor 11 to condense it to generate the refrigerant liquid 103.
- the expansion valve 13 is connected to the ejector 15 by the refrigerant path 33.
- the expansion valve 13 expands the refrigerant liquid 103 condensed by the condenser 12 to reduce the pressure to generate the low-pressure refrigerant liquid 104.
- the ejector 15 is connected to the refrigerant supply unit 24 of the evaporator 14 by the refrigerant path 34, and is connected to the lower part of the casing 22 by the refrigerant path 36.
- the ejector 15 injects the low-pressure refrigerant liquid 104 expanded by the second expansion valve 62 as the refrigerant liquid 105 toward the refrigerant path 34.
- the ejector 15 generates a flow velocity difference and a pressure difference in the refrigerant liquid 104 and sucks the refrigerant liquid 106 stored in the evaporator 14.
- the bubble pump 47 supplies the refrigerant liquid 106 stored in the evaporator 14 to the refrigerant path 34 as the discharge path of the ejector 15.
- a bubble pump 47 is provided below the casing 22 in the evaporator 14.
- the bubble pump 47 is connected to the refrigerant path 34 by the refrigerant path 72, and an on-off valve 73 is provided in the refrigerant path 72.
- the bubble pump 47 has a U-shape, one end of which is connected to the lower part of the casing 22 in the evaporator 14, and the other end of which is connected to the refrigerant path 72.
- the refrigerant path 74 is provided by branching from the refrigerant path 31 connecting the compressor 11 and the condenser 12.
- the refrigerant path 74 is provided with an on-off valve 75 and is connected to the lower part of the bubble pump 47.
- the refrigerant gas (refrigerant) 102 is supplied from the refrigerant path 74 to the lower part of the U-shape.
- the bubble pump 47 utilizes the difference in specific gravity between the refrigerant gas 102 supplied to the lower portion and the refrigerant liquid 106 stored in the lower portion of the evaporator 14, so that the refrigerant gas 102 passes the refrigerant liquid 106 of the evaporator 14 to the refrigerant path. It is supplied to the refrigerant path 34 by 72.
- the evaporator 14 is connected to the compressor 11 by the refrigerant path 35.
- the evaporator 14 is a liquid film type.
- the evaporator 14 evaporates the refrigerant liquid 105 including the refrigerant liquid 106 to generate the refrigerant gas 101.
- a part of the refrigerant liquid 105 evaporates to become the refrigerant gas 101 and is supplied to the compressor 41, and the rest becomes the refrigerant liquid 106 stored in the lower part of the casing 22.
- the refrigeration cycle by the refrigerator 10D is a single-stage refrigeration cycle.
- the compressor 11 compresses the refrigerant gas 101 from the evaporator 14 into a high-temperature and high-pressure refrigerant gas 102.
- the condenser 12 condenses the high-temperature and high-pressure refrigerant gas 102 into a refrigerant liquid 103.
- the expansion valve 13 expands the condensed refrigerant liquid 103 to obtain a low-pressure refrigerant liquid 104.
- the ejector 15 ejects the low-pressure refrigerant liquid 104 toward the evaporator 14 and sucks the refrigerant liquid 106 below the evaporator 14.
- the bubble pump 47 operates, and the refrigerant liquid 106 of the evaporator 14 is supplied from the refrigerant path 72 to the refrigerant path 34 by the refrigerant gas 102. That is, the refrigerant liquid 106 stored in the evaporator 14 is supplied to the evaporator 14 together with the refrigerant liquid 104 expanded by the expansion valve 13 by the ejector 15 and the bubble pump 47. The evaporator 14 partially evaporates the refrigerant liquid 105 to generate the refrigerant gas 101, which is supplied to the compressor 11. Further, in the evaporator 14, the unevaporated refrigerant liquid 106 is stored in the lower part of the casing 22, but is returned to the refrigerant supply unit 24 by the ejector 15 and the auxiliary pump 46.
- the operating conditions of the bubble pump 47 are the same as those of the auxiliary pump 46 described in the fourth embodiment.
- FIG. 6 is a schematic configuration diagram showing the refrigerator of the sixth embodiment.
- the members having the same functions as those of the first embodiment described above are designated by the same reference numerals, and detailed description thereof will be omitted.
- the refrigerator 10E includes a compressor 11, a condenser 12, an expansion valve 13, an evaporator 14, an ejector 15, and a plate heat exchanger (second).
- a heat exchanger) 48 and a gas-liquid separator (second gas-liquid separator) 49 are provided.
- the compressor 11 is connected to the condenser 12 by the refrigerant path 31.
- the compressor 11 compresses the refrigerant gas 101 to generate a high-temperature and high-pressure refrigerant gas 102.
- the condenser 12 is connected to the expansion valve 13 by the refrigerant path 32.
- the condenser 12 cools the high-temperature and high-pressure refrigerant gas 102 compressed by the compressor 11 to condense it to generate the refrigerant liquid 103.
- the expansion valve 13 is connected to the plate heat exchanger by the refrigerant path 81.
- the expansion valve 13 expands the refrigerant liquid 103 condensed by the condenser 12 to reduce the pressure to generate the low-pressure refrigerant liquid 104.
- the plate heat exchanger 48 is connected to the gas-liquid separator 49 by the refrigerant path 82.
- the gas-liquid separator 49 is connected to the ejector 15 by the refrigerant path 33, and is connected to the refrigerant path 53 by the refrigerant path 83.
- the plate heat exchanger 48 heats the low-pressure refrigerant liquid 104 and discharges it as the refrigerant liquid 141. At this time, a part of the low-pressure refrigerant liquid 104 evaporates to become a refrigerant gas.
- the gas-liquid separator 49 separates the refrigerant liquid 141 into the refrigerant liquid 104 and the refrigerant gas (refrigerant) 142.
- the refrigerant liquid 104 is supplied to the ejector 15, and the refrigerant gas 142 is supplied to the compressor 11.
- the ejector 15 is connected to the refrigerant supply unit 24 of the evaporator 14 by the refrigerant path 34, and is connected to the lower part of the casing 22 by the refrigerant path 36.
- the ejector 15 injects the low-pressure refrigerant liquid 104 expanded by the second expansion valve 62 as the refrigerant liquid 105 toward the refrigerant path 34.
- the ejector 15 generates a flow velocity difference and a pressure difference in the refrigerant liquid 104 and sucks the refrigerant liquid 106 stored in the evaporator 14.
- the auxiliary pump 46 supplies the refrigerant liquid 106 stored in the evaporator 14 to the refrigerant path 34 of the ejector 15.
- the lower part of the casing 22 in the evaporator 14 and the refrigerant path 34 are connected by the refrigerant path 71.
- the auxiliary pump 46 is provided in the refrigerant path 71.
- the evaporator 14 is connected to the compressor 11 by the refrigerant path 35.
- the evaporator 14 is a liquid film type.
- the evaporator 14 evaporates the refrigerant liquid 105 including the refrigerant liquid 106 to generate the refrigerant gas 101.
- a part of the refrigerant liquid 105 evaporates to become the refrigerant gas 101 and is supplied to the compressor 41, and the rest becomes the refrigerant liquid 106 stored in the lower part of the casing 22.
- the refrigeration cycle by the refrigerator 10E is a single-stage refrigeration cycle.
- the compressor 11 compresses the refrigerant gas 101 from the evaporator 14 into a high-temperature and high-pressure refrigerant gas 102.
- the condenser 12 condenses the high-temperature and high-pressure refrigerant gas 102 into a refrigerant liquid 103.
- the expansion valve 13 expands the condensed refrigerant liquid 103 to obtain a low-pressure refrigerant liquid 104.
- the plate heat exchanger 48 heats the refrigerant liquid 104 to obtain the refrigerant liquid 141, and the gas-liquid separator 49 separates the refrigerant liquid 141 into the refrigerant liquid 104 and the refrigerant gas 142.
- the refrigerant liquid 104 is supplied to the ejector 15, and the refrigerant gas 142 is supplied to the compressor 11.
- the ejector 15 ejects the low-pressure refrigerant liquid 104 toward the evaporator 14 and sucks the refrigerant liquid 106 below the evaporator 14.
- the auxiliary pump 46 operates as needed to supply the refrigerant liquid 106 stored in the evaporator 14 to the refrigerant path 34. That is, the refrigerant liquid 106 stored in the evaporator 14 is supplied to the evaporator 14 together with the refrigerant liquid 104 expanded by the expansion valve 13 by the ejector 15 and the auxiliary pump 46.
- the evaporator 14 partially evaporates the refrigerant liquid 105 to generate the refrigerant gas 101, which is supplied to the compressor 11. Further, in the evaporator 14, the unevaporated refrigerant liquid 106 is stored in the lower part of the casing 22, but is returned to the refrigerant supply unit 24 by the ejector 15 and the auxiliary pump 46.
- the refrigerator includes compressors 11 and 41 for compressing the refrigerant, a condenser 12 for condensing the refrigerant compressed by the compressors 11 and 41, and an expansion valve (expansor) for expanding the refrigerant condensed by the condenser 12. 13, 42, 44, a liquid film type evaporator 14 that evaporates the refrigerant expanded by the expansion valves 13, 42, 44, and the refrigerant stored in the evaporator 14 by utilizing the pressure difference between the inlet and the outlet. It is provided with an ejector 15 for suction.
- the compressor 11 compresses the refrigerant
- the condenser 12 condenses the refrigerant
- the expansion valve 13 expands the refrigerant
- the liquid film type evaporator 14 evaporates the refrigerant.
- the ejector 15 sucks the refrigerant stored in the evaporator 14 by utilizing the pressure difference between the inlet and the outlet, and supplies the refrigerant to the evaporator 14. That is, by utilizing a part of the pressure loss in the expansion valve 13 as the operating power of the ejector 15, the refrigerant can be circulated in the evaporator 14. Therefore, it is not necessary to use a separate pump or the like, and it is possible to suppress the increase in size and cost of the device.
- the compressor 41 is a multi-stage compressor, and the expansion valve 42 is arranged in series with the refrigerant paths (discharge paths) 32, 56, 57 of the refrigerant condensed by the condenser 12.
- the first expansion valve 54 and the second expansion valve 55 are provided, and the refrigerant gas separated from the refrigerant between the first expansion valve 54 and the second expansion valve 55 is transferred to the second and subsequent stages of the compressor 41.
- An economizer (first gas-liquid separator) 43 to be supplied is provided.
- the compressor 41 is a multi-stage compressor, and the expansion valve 44 is arranged in parallel with the refrigerant paths (discharge paths) 63 and 64 of the refrigerant condensed by the condenser 12. It has a first expansion valve 61 and a second expansion valve 62, and has a refrigerant liquid (first refrigerant) 121 after being expanded by the first expansion valve 61 and a refrigerant liquid (first) before being expanded by the second expansion valve 62.
- An economizer (first heat exchanger) 45 is provided that exchanges heat with the (2 refrigerant) 103 and supplies the refrigerant gas (first refrigerant) 122 to the second and subsequent stages of the compressor 41.
- the refrigerator according to the fourth aspect is provided with an auxiliary pump 46 that supplies the refrigerant stored in the evaporator 14 to the refrigerant path (discharge path) 65 of the ejector 15.
- auxiliary pump 46 that supplies the refrigerant stored in the evaporator 14 to the refrigerant path (discharge path) 65 of the ejector 15.
- the refrigerator according to the fifth aspect is provided with a bubble pump 47 as an auxiliary pump.
- a bubble pump 47 as an auxiliary pump.
- the refrigerator according to the fourth aspect and the fifth aspect is provided with a control device that controls the operation of the auxiliary pump 46 and the bubble pump 47 according to the amount of the refrigerant stored in the evaporator 14. This makes it possible to properly circulate the refrigerant in the evaporator 14 regardless of the operating state of the refrigerator.
- the refrigerator according to the sixth aspect is air from a plate type heat exchanger (second heat exchanger) 48 that evaporates the refrigerant expanded by the expansion valve 13 and a refrigerant that has been heat exchanged by the plate type heat exchanger 48.
- a gas-liquid separator (second gas-liquid separator) 49 that supplies the liquid-separated refrigerant to the compressor 11 is provided.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
Description
<冷凍機の構成>
図1は、第1実施形態の冷凍機を表す概略構成図である。
冷凍機10による冷凍サイクルは、単段冷凍サイクルである。圧縮機11は、蒸発器14からの冷媒ガス101を圧縮して高温高圧の冷媒ガス102とする(圧縮行程)。凝縮器12は、高温高圧の冷媒ガス102を凝縮させて冷媒液103とする(凝縮行程)。膨張弁13は、凝縮された冷媒液103を膨張させて低圧の冷媒液104とする(膨張行程)。エダクタ15は、低圧の冷媒液104を蒸発器14に向けて噴出する。すると、冷媒液104の噴出によって発生した吸引力が冷媒経路36に作用し、蒸発器14の下部に貯留されている冷媒液106が冷媒経路36を通して吸引される。すなわち、エダクタ15は、膨張弁13で膨張された冷媒液104と共に、蒸発器14に貯留された冷媒液106を蒸発器14に供給する。蒸発器14は、冷媒供給部24から冷媒液105を流下し、冷媒液105の液相部分を多数の伝熱管23に接触させることで、冷媒ガス101を生成(蒸発行程)し、冷媒ガス101が圧縮機11に供給される。また、蒸発器14は、未蒸発の冷媒液106がケーシング22の下部に貯留されるが、上述したように、エダクタ15により冷媒供給部24に戻される。
図2は、第2実施形態の冷凍機を表す概略構成図である。なお、上述した第1実施形態と同様の機能を有する部材には、同一の符号を付して詳細な説明は省略する。
図3は、第3実施形態の冷凍機を表す概略構成図である。なお、上述した第2実施形態と同様の機能を有する部材には、同一の符号を付して詳細な説明は省略する。
図4は、第4実施形態の冷凍機を表す概略構成図である。なお、上述した第1実施形態と同様の機能を有する部材には、同一の符号を付して詳細な説明は省略する。
図5は、第5実施形態の冷凍機を表す概略構成図である。なお、上述した第4実施形態と同様の機能を有する部材には、同一の符号を付して詳細な説明は省略する。
図6は、第6実施形態の冷凍機を表す概略構成図である。なお、上述した第1実施形態と同様の機能を有する部材には、同一の符号を付して詳細な説明は省略する。
冷凍機は、冷媒を圧縮する圧縮機11,41と、圧縮機11,41により圧縮された冷媒を凝縮させる凝縮器12と、凝縮器12により凝縮された冷媒を膨張させる膨張弁(膨張機)13,42,44と、膨張弁13,42,44で膨張された冷媒を蒸発させる液膜式の蒸発器14と、入口と出口の圧力差を利用して蒸発器14に貯留された冷媒を吸引するエダクタ15とを備える。
11,41 圧縮機
12 凝縮器
13,42,44 膨張弁
14 蒸発器
15 エダクタ
21 電動機
22 ケーシング
23 伝熱管
24 冷媒供給部
25 冷媒排出部
31,32,33,34,35,36,53,56,57,58,63,64,65,71,72,74,81,82,83 冷媒経路
43 エコノマイザ(第1気液分離器)
45 エコノマイザ(第1熱交換器)
46 補助ポンプ
47 気泡ポンプ(補助ポンプ)
48 プレート型熱交換器(第2熱交換器)
49 気液分離器(第2気液分離器)
51 第1圧縮機
52 第2圧縮機
54,61 第1膨張弁(第1膨張機)
55,62 第2膨張弁(第2膨張機)
73,75 開閉弁
101,102,113,122,142 冷媒ガス(冷媒)
103,104,105,106,111,112,121,123,131,141 冷媒液(冷媒)
Claims (7)
- 冷媒を圧縮する圧縮機と、
前記圧縮機により圧縮された前記冷媒を凝縮させる凝縮器と、
前記凝縮器により凝縮された前記冷媒を膨張させる膨張機と、
前記膨張機により膨張された前記冷媒を蒸発させる液膜式の蒸発器と、
入口と出口の圧力差を利用して前記蒸発器に貯留された前記冷媒を吸引するエダクタと、
を備える冷凍機。 - 前記圧縮機は、多段圧縮機であり、前記膨張機は、前記凝縮器により凝縮された前記冷媒の排出経路に直列に配置される第1膨張機および第2膨張機を有し、前記第1膨張機と前記第2膨張機との間に前記冷媒から気液分離した冷媒ガスを前記圧縮機の2段目以降に供給する第1気液分離器が設けられる、
請求項1に記載の冷凍機。 - 前記圧縮機は、多段圧縮機であり、前記膨張機は、前記凝縮器により凝縮された前記冷媒の排出経路に並列に配置される第1膨張機および第2膨張機を有し、前記第1膨張機により膨張された後の第1冷媒と前記第2膨張機により膨張される前の第2冷媒とを熱交換して前記第1冷媒を前記圧縮機の2段目以降に供給する第1熱交換器が設けられる、
請求項1に記載の冷凍機。 - 前記蒸発器に貯留された前記冷媒を前記エダクタの排出経路に供給する補助ポンプが設けられる、
請求項1から請求項3のいずれか一項に記載の冷凍機。 - 前記補助ポンプは、気泡ポンプである、
請求項4に記載の冷凍機。 - 前記蒸発器に貯留された前記冷媒の貯留量に応じて前記補助ポンプの作動を制御する制御装置が設けられる、
請求項4または請求項5に記載の冷凍機。 - 前記膨張機で膨張された前記冷媒を蒸発させる第2熱交換器と、前記第2熱交換器により熱交換された前記冷媒から気液分離した冷媒ガスを前記圧縮機に供給する第2気液分離器とが設けられる、
請求項1から請求項6のいずれか一項に記載の冷凍機。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202180078185.6A CN116583701A (zh) | 2020-11-27 | 2021-11-16 | 制冷机 |
US18/038,666 US20240035719A1 (en) | 2020-11-27 | 2021-11-16 | Refrigeration machine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020197042A JP2022085386A (ja) | 2020-11-27 | 2020-11-27 | 冷凍機 |
JP2020-197042 | 2020-11-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022113815A1 true WO2022113815A1 (ja) | 2022-06-02 |
Family
ID=81755967
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2021/042020 WO2022113815A1 (ja) | 2020-11-27 | 2021-11-16 | 冷凍機 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20240035719A1 (ja) |
JP (1) | JP2022085386A (ja) |
CN (1) | CN116583701A (ja) |
WO (1) | WO2022113815A1 (ja) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62162868A (ja) * | 1986-01-14 | 1987-07-18 | 株式会社東芝 | 蒸発器 |
JPH08189726A (ja) * | 1995-01-10 | 1996-07-23 | Hitachi Ltd | 流下液膜式蒸発器及び該流下液膜式蒸発器を備えたターボ冷凍機 |
CN101191683A (zh) * | 2006-11-30 | 2008-06-04 | 上海海事大学 | 射流循环喷淋降膜蒸发器 |
JP2009250566A (ja) * | 2008-04-09 | 2009-10-29 | Daikin Ind Ltd | 多管式熱交換器 |
JP2010032105A (ja) * | 2008-07-29 | 2010-02-12 | Hitachi Appliances Inc | 空気調和機 |
JP2010515006A (ja) * | 2006-12-21 | 2010-05-06 | ジョンソン コントロールズ テクノロジー カンパニー | 流下液膜式蒸発器 |
JP2016056966A (ja) * | 2014-09-05 | 2016-04-21 | 三菱重工業株式会社 | ターボ冷凍機 |
JP2017146068A (ja) * | 2016-02-19 | 2017-08-24 | 三菱重工業株式会社 | 冷凍機およびその制御方法 |
-
2020
- 2020-11-27 JP JP2020197042A patent/JP2022085386A/ja active Pending
-
2021
- 2021-11-16 CN CN202180078185.6A patent/CN116583701A/zh active Pending
- 2021-11-16 WO PCT/JP2021/042020 patent/WO2022113815A1/ja active Application Filing
- 2021-11-16 US US18/038,666 patent/US20240035719A1/en active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62162868A (ja) * | 1986-01-14 | 1987-07-18 | 株式会社東芝 | 蒸発器 |
JPH08189726A (ja) * | 1995-01-10 | 1996-07-23 | Hitachi Ltd | 流下液膜式蒸発器及び該流下液膜式蒸発器を備えたターボ冷凍機 |
CN101191683A (zh) * | 2006-11-30 | 2008-06-04 | 上海海事大学 | 射流循环喷淋降膜蒸发器 |
JP2010515006A (ja) * | 2006-12-21 | 2010-05-06 | ジョンソン コントロールズ テクノロジー カンパニー | 流下液膜式蒸発器 |
JP2009250566A (ja) * | 2008-04-09 | 2009-10-29 | Daikin Ind Ltd | 多管式熱交換器 |
JP2010032105A (ja) * | 2008-07-29 | 2010-02-12 | Hitachi Appliances Inc | 空気調和機 |
JP2016056966A (ja) * | 2014-09-05 | 2016-04-21 | 三菱重工業株式会社 | ターボ冷凍機 |
JP2017146068A (ja) * | 2016-02-19 | 2017-08-24 | 三菱重工業株式会社 | 冷凍機およびその制御方法 |
Also Published As
Publication number | Publication date |
---|---|
CN116583701A (zh) | 2023-08-11 |
US20240035719A1 (en) | 2024-02-01 |
JP2022085386A (ja) | 2022-06-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4023415B2 (ja) | 蒸気圧縮式冷凍機 | |
US7367202B2 (en) | Refrigerant cycle device with ejector | |
JP6150140B2 (ja) | 熱交換装置及びヒートポンプ装置 | |
CA2541403C (en) | Variable cooling load refrigeration cycle | |
JP4923838B2 (ja) | エジェクタ式冷凍サイクル | |
EP2339265A2 (en) | Refrigerating apparatus | |
JP5018724B2 (ja) | エジェクタ式冷凍サイクル | |
JP5878046B2 (ja) | ターボ冷凍機及びその制御方法 | |
KR20110100905A (ko) | 칠러 | |
JP4042637B2 (ja) | エジェクタサイクル | |
WO2013140990A1 (ja) | 冷凍サイクル及び冷凍ショーケース | |
JP5412193B2 (ja) | ターボ冷凍機 | |
EP3881012A1 (en) | Refrigeration system | |
JP2012504221A (ja) | プルダウン時における容量の増加 | |
JP2007057156A (ja) | 冷凍サイクル | |
JP2007024412A (ja) | エジェクタ式冷凍サイクル | |
JP4577365B2 (ja) | エジェクタを用いたサイクル | |
JP2012021761A (ja) | 冷凍装置 | |
JP2005037056A (ja) | エジェクタサイクル | |
WO2022113815A1 (ja) | 冷凍機 | |
JPH04320762A (ja) | 冷凍サイクル | |
CA3117235C (en) | System and method of mechanical compression refrigeration based on two-phase ejector | |
WO2013140992A1 (ja) | 冷凍サイクル及び冷凍ショーケース | |
JP2010101613A (ja) | 冷凍装置 | |
KR20210014091A (ko) | 냉동 장치 및 액체 온조 장치 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 21897789 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202180078185.6 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 18038666 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 21897789 Country of ref document: EP Kind code of ref document: A1 |