EP1783444A1 - Cooling chamber and air refrigerant type cooling system - Google Patents
Cooling chamber and air refrigerant type cooling system Download PDFInfo
- Publication number
- EP1783444A1 EP1783444A1 EP05703373A EP05703373A EP1783444A1 EP 1783444 A1 EP1783444 A1 EP 1783444A1 EP 05703373 A EP05703373 A EP 05703373A EP 05703373 A EP05703373 A EP 05703373A EP 1783444 A1 EP1783444 A1 EP 1783444A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air
- cooling
- warehouse
- cooled
- refrigerant
- Prior art date
- 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.)
- Granted
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 210
- 239000003507 refrigerant Substances 0.000 title claims abstract description 81
- 238000010257 thawing Methods 0.000 description 5
- KYKAJFCTULSVSH-UHFFFAOYSA-N chloro(fluoro)methane Chemical compound F[C]Cl KYKAJFCTULSVSH-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000013019 agitation Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 235000013611 frozen food Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229940127554 medical product Drugs 0.000 description 1
- 229940126601 medicinal product Drugs 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
Images
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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
- F25B9/004—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/04—Self-contained movable devices, e.g. domestic refrigerators specially adapted for storing deep-frozen articles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
- F25D2317/066—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air supply
- F25D2317/0665—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air supply from the top
Definitions
- the present invention relates to a cooling apparatus using an air refrigerant and a cooling warehouse cooled by the cooling apparatus.
- a cooling apparatus using air as a refrigerant has been developed in recent years instead of a conventional cooling apparatus using chlorofluorocarbon as a refrigerant.
- This type of the cooling apparatus using a refrigerant air generally uses a system for performing cooling by directly blowing the air used as a refrigerant into a cooling chamber.
- Japanese Unexamined Patent Publication No. 8-61821 (1996 ) discloses a low-temperature freezer for cooling a cooling space to a target temperature by a circulation equipment for circulating low-temperature air in the cooling space between the cooling spaces in a cooling portion outside of the cooling space, in which the circulation equipment for circulating the low-temperature air is systematized by arranging an air compressor, compressed-air cooler, expander, and cooler in order of air flow in a circulation route, and constituted by including a main unit for expanding compressed air and generating low-temperature air, a mixing-injecting nozzle for mixing low-temperature air which is dried low-temperature air sufficiently dehumidified with the air in the cooling space and thereby directly injecting the mixed air into the cooling space, and an air intake hole for attracting the air from the cooling space and directly returning the air to the main unit.
- the object of the present invention is to provide a technique for further uniforming cooling of the cooling warehouse using the air refrigerant type cooling apparatus.
- the cooling warehouse of the present invention has a first cooled-air introducing pipe introducing a first cooled air cooled by an air refrigerant type cooling apparatus, a second cooled-air introducing pipe taking in second cooled air in the cooling warehouse, and an air introducing port introducing the mixed air in which the first cooled air and second cooled air are mixed into the cooling warehouse.
- the air introducing port is opened on a duct set in the cooling warehouse.
- a second cooled air introducing pipe is set to the outside of the cooling warehouse and one end of the second cooled air introducing pipe is opened on the wall face of the cooling warehouse.
- the second cooled-air introducing pipe is set inside the cooling warehouse.
- the air refrigerant type cooling system of the present invention has the air refrigerant type cooling apparatus and the cooling warehouse.
- the air refrigerant type cooling apparatus has a compressor compressing the refrigerant air coming out of the cooling warehouse, a heat exchanger cooling the refrigerant air coming out of the compressor, and an expansion turbine expanding the air refrigerant coming out of the heat exchanger and supplying the refrigerant air to the cooling warehouse.
- the cooling warehouse has a first cooled-air introducing pipe introducing the refrigerant air coming out of the expansion turbine, a second cooled air introducing pipe taking in cooled air in the cooling warehouse, and an air introducing port introducing mixed air in which the refrigerant air introduced by the first cooled-air introducing pipe and the cooled air are mixed into the cooling warehouse.
- a transporting apparatus of the present invention has the air refrigerant type cooling apparatus, the cooling warehouse, and a carriage mounting the air refrigerant type cooling apparatus and the cooling warehouse.
- the air refrigerant type cooling apparatus has the compressor compressing the refrigerant air coming out of the cooling warehouse, the heat exchanger cooling the refrigerant air coming out of the compressor, and the expansion turbine expanding the refrigerant air coming out of the heat exchanger and supplying the refrigerant air to the cooling warehouse.
- the cooling warehouse has the first cooled-air introducing pipe introducing the refrigerant air coming out of the expansion turbine, the second cooled-air introducing pipe taking in the cooled air in the cooling warehouse, and the air introducing port introducing the mixed air in which the refrigerant air introduced by the first cooled-air introducing pipe and the cooled air are mixed into the cooling warehouse.
- the present invention provides a technique for further uniforming cooling of the cooling warehouse using the air refrigerant type cooling apparatus.
- FIG. 1 A configuration of an air refrigerant type cooling apparatus is shown in Fig. 1.
- the cooling apparatus includes a freezer, a cooler, and an air-conditioning cooler (the same is applied to the cooling warehouse). This is because it is possible to apply the air refrigerant type cooling apparatus to freezing, cooling, and air-conditioning cooling by changing the temperature and pressure level of a system.
- the air refrigerant type cooling apparatus 1 has a compressor 2. to be driven by a motor 4.
- the compressor 2 is connected to a first cooled-air-type heat exchanger 6. It is also allowed to use a heat exchanger which is not the air cooling type as the first cooled-air heat exchanger 6.
- the first cooled-air heat exchanger 6 is connected to a second cooling heat exchanger 10.
- the second cooling heat exchanger 10 is connected to an expansion turbine 12 to be driven by the motor 4.
- the expansion turbine 12 is connected to the cooling warehouse 14.
- the cooling warehouse 14 is a warehouse having a door which can be opened and closed to form a space closed by closing the door inside.
- the cooling warehouse 14 is connected to the second cooling heat exchanger 10.
- the second cooling heat exchanger 10 is connected to the compressor 2.
- the air discharged from the cooling warehouse 14 is introduced into the compressor 2 through the second cooling heat exchanger 10.
- the air is brought into a high-temperature high-pressure state by the compressor 2.
- the air discharged from the compressor 2 is air-cooled due to outside air by the first cooling heat exchanger 6.
- the outside air is circulated through the first cooling heat exchange 6 by a fan 8.
- the air coming out of the first cooling heat exchanger 6 is further cooled by performing heat exchange with the air discharged from the cooling warehouse 14 in the second cooling heat exchanger 10.
- the air coming out of the second cooling heat exchanger 10 becomes lower-temperature cooled air by being adiabatically expanded by the expansion turbine 12.
- the cooled air is introduced into the cooling warehouse 14 to cool the cooling warehouse 14.
- a cooling apparatus using an refrigerant air generally has a larger temperature difference between a refrigerant (cooled air) and the inside of a cooling warehouse than the case of a cooling apparatus using chlorofluorocarbon as a refrigerant. Therefore, the air-refrigerant cooling apparatus requires smaller quantity and speed of the cooled air to be supplied to the cooling warehouse 14.
- the flow of air nearby the cooling warehouse is shown in Fig. 2.
- the cooled air produced by the air refrigerant type cooling apparatus 1 is sent up to a portion nearby the cooling warehouse 14 by a cooled-air introducing pipe 26.
- a hole is formed on the wall face of the cooling warehouse 14 and an in-warehouse-air taking-in pipe 22 is connected to the hole.
- the other end of the in-warehouse-air taking-in pipe 22 is connected to the cooled-air introducing pipe 26.
- a cooled-air feeding fan 24 to be rotated in the direction for supplying air to the connective portion with the cooled-air introducing pipe 26 from the hole on the wall face of the cooling warehouse 14 is set in the in-warehouse-air taking-in pipe 22.
- the cooled-air introducing pipe 26 is connected to a duct 28 set in the cooling warehouse 14 at the downstream side of the connective portion with the in-warehouse-air taking-in pipe 22.
- a plurality of cooled-air blow-off ports 30 are formed on the duct 28.
- an another supplying mechanism for supplying mixed air containing air from the cooled-air introducing pipe 26 and the in-warehouse-air taking-in pipe 22 can be included instead of the duct 28 or with the duct 28.
- a supplying mechanism is preferred to distribute air to the wide range of the cooling warehouse 14.
- the supplying mechanism is, for example, a guiding plate guiding air to the number of places of the cooling warehouse 14.
- a fan distributing air to the wide range of the cooling warehouse 14 is preferred to be used in addition to the duct 28 or the supplying mechanism.
- the cooled air produced by the air refrigerant type cooling apparatus 1 flows to the cooled-air introducing pipe 26.
- the temperature of the cooled air is, for example, -60°C.
- the air in the warehouse 14 is taken into the in-warehouse-air taking-in pipe 22 by the cooled-air feeding fan 24.
- the temperature of the air is, for example, -30°C.
- the air incoming from the cooled-air introducing pipe 26 and the air incoming from the in-warehouse-air taking-in pipe 22 are mixed at the downstream side of the connective portion between the pipes 26 and 22.
- the temperature of the mixed air 32 is, for example, -40°C.
- the mixed air 32 is blown off from the cooled-air blow-off ports 30 of the duct 28 into the cooling warehouse 14.
- the quantity and speed of the air blown off is small comparing with a cooling apparatus using a chlorofluorocarbon refrigerant.
- the air in the warehouse is suctioned and added to the cooled air sent from the air refrigerant type cooling apparatus 1. Therefore, the quantity and speed of the air are increased. Therefore, the air in the cooling warehouse 14 is agitated and the temperature distribution becomes flatter.
- the difference of the temperature between the mixed air 32 and the cooling warehouse 14 is smaller than the difference of the temperature between the cooled air sent from the air refrigerant type cooling apparatus 1 and the cooling warehouse 14, the temperature distribution in the cooling warehouse 14 becomes flatter.
- the cooled air feeding fan 24 is placed at the outside of the cooling warehouse 14 and thereby, a motor for rotating the cooled-air feeding fan 24 i's set to the outside of the cooling warehouse 14, the heat produced by the motor is not discharged into the cooling warehouse 14 and thereby, cooling is efficiently performed.
- Fig. 3 shows the flow of air in the vicinity of a cooling warehouse of another embodiment of the present invention.
- the cooled air produced by the air refrigerant type cooling apparatus 1 is sent up to the inside of the cooling warehouse 14 by a cooled-air introducing pipe 38.
- An in-warehouse-air taking-in pipe 34 is set in the cooling warehouse 14. One end of the pipe 34 is opened at the inside of the cooling warehouse 14. The other end of the in-warehouse-air taking-in pipe 34 is connected to the cooled-air introducing pipe 38 in the cooling warehouse 14.
- a cooled-air feeding fan 36 to be rotated in the direction for supplying air to the connective portion with the cooled-air introducing pipe 38 from one end opened in the cooling warehouse 14 is set in the in-warehouse-air taking-in pipe 34.
- the cooled-air introducing pipe 38 is connected to the duct 28 set in the cooling warehouse 14 at the downstream side of the connective portion with the in-warehouse-air taking-in pipe 34.
- a plurality of cooled-air blow-off ports 30 are formed on the duct 28.
- cooled air produced by the air refrigerant type cooling apparatus 1 flows to the cooled-air introducing pipe 38.
- the temperature of the cooled air is, for example, -60°C.
- the air in the cooling warehouse 14 is taken into the in-warehouse-air taking-in pipe 34 by the cooled-air feeding fan 36.
- the temperature of the air is, for example, -30°C.
- the air incoming from the cooled-air introducing pipe 38 and the air incoming from the in-warehouse-air taking-in pipe 34 are mixed at the downstream side of the connective portion between the cooled-air introducing pipe 38 and the in-warehouse-air taking-in pipe 34.
- the temperature of the mixed air 40 is, for example, - 40°C.
- the mixed air 40 blows off into the cooling warehouse 14 from the cooled-air blow-off ports 30 of the duct 28.
- This embodiment also has a large quantity and speed of air similarly to the case of the embodiment described by referring to Fig. 2.
- advantages are expected that agitation of the air in the cooling warehouse 14 is accelerated and the temperature distribution become more uniform.
- the temperature of the mixed air 40 is closer to the temperature in the cooling warehouse 14 than the temperature of the cooled air sent from the air refrigerant type cooling apparatus 1, there is an advantage that the temperature distribution in the cooling warehouse 14 becomes flatter.
- an object to be cooled by the air refrigerant type cooling apparatus 1 is a cooling warehouse to be closed by closing the door.
- the present invention it is possible to apply the present invention to a semi-closing-type cooling warehouse in which frozen food is prepared when food passes through a space cooled by the air refrigerant type cooling apparatus 1 by a belt conveyer.
- the present invention can be applied to a medical product reactor for cooling medicinal products in their manufacturing process.
- FIG. 4 The another embodiment of the air refrigerant type cooling apparatus of the present invention is shown in Fig. 4. The same number is put on the component similar to Fig. 1, and those explanations are omitted.
- the defrosting machine 42 is intermediately connected between the expansion turbine 12 and the cooling warehouse 14.
- the outlet of the defrosting machine 42 is connected to the inlet of the cooling warehouse 14 through a piping 43.
- the piping 44 connected to the outlet of the cooling warehouse 14 diverges to a piping 46 and a piping 48 through a three way valve.
- the piping 46 is connected to the inlet of the defrosting machine 42.
- the piping 48 is connected to the lower temperature side piping of the second cooling heat exchanger.
- This embodiment also has a large quantity and speed of air similarly to the case of the embodiment described by referring to Fig. 2 and Fig. 3.
- advantages are expected that agitation of the air in the cooling warehouse 14 is accelerated and the temperature distribution become flatter.
- the temperature of the mixed air 40 flowing in the piping 43 is closer to the temperature in the cooling warehouse 14 than the temperature of the cooled air supplied by the expansion turbine 12, there is an advantage that the temperature distribution in the cooling warehouse 14 becomes flatter.
- the air flowing in the piping 46 is introduced to the cooling warehouse 14 after defrosted by the defrosting machine 42, the frost inside in the cooling warehouse 14 decreases.
- Fig. 5 shows an air refrigerant type cooling system applying the air refrigerant type cooling apparatus 1 to a container.
- the air refrigerant type cooling system includes a vehicle 51 (freight car of railroad or ship are included) and a container 50 mounted on the vehicle 51.
- the container 50 loads the air refrigerant type cooling apparatus 1 and the cooling warehouse 14.
- the vehicle 51 loads a battery 52.
- the motor 4 and the fan 8 of the air refrigerant type cooling apparatus 1 and the cooled-air feeding fan 24 or 36 of the cooling warehouse 14 are fed by the battery 52 and driven.
- the freight in the container is cooled and transported by the air refrigerant type cooling system.
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- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
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- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
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Abstract
Description
- The present invention relates to a cooling apparatus using an air refrigerant and a cooling warehouse cooled by the cooling apparatus.
- A cooling apparatus using air as a refrigerant has been developed in recent years instead of a conventional cooling apparatus using chlorofluorocarbon as a refrigerant. This type of the cooling apparatus using a refrigerant air generally uses a system for performing cooling by directly blowing the air used as a refrigerant into a cooling chamber.
-
Japanese Unexamined Patent Publication No. 8-61821 (1996 - In the case of the cooling of the cooling warehouse by the cooling apparatus using the air refrigerant, generally the amount of the airflow and wind speed are smaller than the case of a system using chlorofluorocarbon as a refrigerant. Therefore, when the vessel is large, it is difficult to sufficiently circulate low-temperature air in the warehouse and uniform the temperature in the vessel. In the case of a food warehouse, it is requested that the temperature distribution in the warehouse is controlled within 2°C above and below a target temperature. Therefore, this problem is important.
- The object of the present invention is to provide a technique for further uniforming cooling of the cooling warehouse using the air refrigerant type cooling apparatus.
- The cooling warehouse of the present invention has a first cooled-air introducing pipe introducing a first cooled air cooled by an air refrigerant type cooling apparatus, a second cooled-air introducing pipe taking in second cooled air in the cooling warehouse, and an air introducing port introducing the mixed air in which the first cooled air and second cooled air are mixed into the cooling warehouse.
- In the case of the cooling warehouse of the present invention, the air introducing port is opened on a duct set in the cooling warehouse.
- In the case of the cooling warehouse of the present invention, a second cooled air introducing pipe is set to the outside of the cooling warehouse and one end of the second cooled air introducing pipe is opened on the wall face of the cooling warehouse.
- In the case of the cooling warehouse of the present invention, the second cooled-air introducing pipe is set inside the cooling warehouse.
- The air refrigerant type cooling system of the present invention has the air refrigerant type cooling apparatus and the cooling warehouse. The air refrigerant type cooling apparatus has a compressor compressing the refrigerant air coming out of the cooling warehouse, a heat exchanger cooling the refrigerant air coming out of the compressor, and an expansion turbine expanding the air refrigerant coming out of the heat exchanger and supplying the refrigerant air to the cooling warehouse. The cooling warehouse has a first cooled-air introducing pipe introducing the refrigerant air coming out of the expansion turbine, a second cooled air introducing pipe taking in cooled air in the cooling warehouse, and an air introducing port introducing mixed air in which the refrigerant air introduced by the first cooled-air introducing pipe and the cooled air are mixed into the cooling warehouse.
- A transporting apparatus of the present invention has the air refrigerant type cooling apparatus, the cooling warehouse, and a carriage mounting the air refrigerant type cooling apparatus and the cooling warehouse. The air refrigerant type cooling apparatus has the compressor compressing the refrigerant air coming out of the cooling warehouse, the heat exchanger cooling the refrigerant air coming out of the compressor, and the expansion turbine expanding the refrigerant air coming out of the heat exchanger and supplying the refrigerant air to the cooling warehouse. The cooling warehouse has the first cooled-air introducing pipe introducing the refrigerant air coming out of the expansion turbine, the second cooled-air introducing pipe taking in the cooled air in the cooling warehouse, and the air introducing port introducing the mixed air in which the refrigerant air introduced by the first cooled-air introducing pipe and the cooled air are mixed into the cooling warehouse.
- The present invention provides a technique for further uniforming cooling of the cooling warehouse using the air refrigerant type cooling apparatus.
-
- Fig. 1 shows a configuration of the air refrigerant type cooling apparatus of a background technique;
- Fig. 2 shows the flow of air in a cooling warehouse;
- Fig. 3 shows the flow of air in the cooling warehouse;
- Fig. 4 shows a configuration of the air refrigerant type cooling apparatus; and
- Fig. 5 shows an air refrigerant type cooling apparatus mounted on a carriage.
- The best mode for carrying out the present invention is described below by referring to the attached drawings.
- A configuration of an air refrigerant type cooling apparatus is shown in Fig. 1. The cooling apparatus includes a freezer, a cooler, and an air-conditioning cooler (the same is applied to the cooling warehouse). This is because it is possible to apply the air refrigerant type cooling apparatus to freezing, cooling, and air-conditioning cooling by changing the temperature and pressure level of a system. The air refrigerant
type cooling apparatus 1 has a compressor 2. to be driven by a motor 4. The compressor 2 is connected to a first cooled-air-type heat exchanger 6. It is also allowed to use a heat exchanger which is not the air cooling type as the first cooled-air heat exchanger 6. The first cooled-air heat exchanger 6 is connected to a secondcooling heat exchanger 10. The secondcooling heat exchanger 10 is connected to anexpansion turbine 12 to be driven by the motor 4. Theexpansion turbine 12 is connected to thecooling warehouse 14. Thecooling warehouse 14 is a warehouse having a door which can be opened and closed to form a space closed by closing the door inside. Thecooling warehouse 14 is connected to the secondcooling heat exchanger 10. The secondcooling heat exchanger 10 is connected to the compressor 2. - In the above air refrigerant
type cooling apparatus 1, the air discharged from thecooling warehouse 14 is introduced into the compressor 2 through the secondcooling heat exchanger 10. The air is brought into a high-temperature high-pressure state by the compressor 2. The air discharged from the compressor 2 is air-cooled due to outside air by the firstcooling heat exchanger 6. The outside air is circulated through the firstcooling heat exchange 6 by a fan 8. The air coming out of the firstcooling heat exchanger 6 is further cooled by performing heat exchange with the air discharged from thecooling warehouse 14 in the secondcooling heat exchanger 10. The air coming out of the secondcooling heat exchanger 10 becomes lower-temperature cooled air by being adiabatically expanded by theexpansion turbine 12. The cooled air is introduced into thecooling warehouse 14 to cool thecooling warehouse 14. - A cooling apparatus using an refrigerant air generally has a larger temperature difference between a refrigerant (cooled air) and the inside of a cooling warehouse than the case of a cooling apparatus using chlorofluorocarbon as a refrigerant. Therefore, the air-refrigerant cooling apparatus requires smaller quantity and speed of the cooled air to be supplied to the
cooling warehouse 14. - The flow of air nearby the cooling warehouse is shown in Fig. 2. The cooled air produced by the air refrigerant
type cooling apparatus 1 is sent up to a portion nearby thecooling warehouse 14 by a cooled-air introducing pipe 26. A hole is formed on the wall face of thecooling warehouse 14 and an in-warehouse-air taking-inpipe 22 is connected to the hole. The other end of the in-warehouse-air taking-inpipe 22 is connected to the cooled-air introducing pipe 26. A cooled-air feeding fan 24 to be rotated in the direction for supplying air to the connective portion with the cooled-air introducing pipe 26 from the hole on the wall face of thecooling warehouse 14 is set in the in-warehouse-air taking-inpipe 22. - The cooled-
air introducing pipe 26 is connected to aduct 28 set in thecooling warehouse 14 at the downstream side of the connective portion with the in-warehouse-air taking-inpipe 22. A plurality of cooled-air blow-offports 30 are formed on theduct 28. - Also, an another supplying mechanism for supplying mixed air containing air from the cooled-
air introducing pipe 26 and the in-warehouse-air taking-inpipe 22 can be included instead of theduct 28 or with theduct 28. Such a supplying mechanism is preferred to distribute air to the wide range of thecooling warehouse 14. The supplying mechanism is, for example, a guiding plate guiding air to the number of places of thecooling warehouse 14. Also, a fan distributing air to the wide range of the coolingwarehouse 14 is preferred to be used in addition to theduct 28 or the supplying mechanism. - In the case of this cooling
warehouse 14, the cooled air produced by the air refrigeranttype cooling apparatus 1 flows to the cooled-air introducing pipe 26. The temperature of the cooled air is, for example, -60°C. The air in thewarehouse 14 is taken into the in-warehouse-air taking-inpipe 22 by the cooled-air feeding fan 24. The temperature of the air is, for example, -30°C. The air incoming from the cooled-air introducing pipe 26 and the air incoming from the in-warehouse-air taking-inpipe 22 are mixed at the downstream side of the connective portion between thepipes mixed air 32 is, for example, -40°C. Themixed air 32 is blown off from the cooled-air blow-offports 30 of theduct 28 into the coolingwarehouse 14. - In the case of an air-refrigerant cooling apparatus, the quantity and speed of the air blown off is small comparing with a cooling apparatus using a chlorofluorocarbon refrigerant. In the case of the cooling warehouse of this embodiment, however, the air in the warehouse is suctioned and added to the cooled air sent from the air refrigerant
type cooling apparatus 1. Therefore, the quantity and speed of the air are increased. Therefore, the air in the coolingwarehouse 14 is agitated and the temperature distribution becomes flatter. Moreover, because the difference of the temperature between themixed air 32 and the coolingwarehouse 14 is smaller than the difference of the temperature between the cooled air sent from the air refrigeranttype cooling apparatus 1 and the coolingwarehouse 14, the temperature distribution in the coolingwarehouse 14 becomes flatter. - Furthermore, in this embodiment, because the cooled air feeding fan 24 is placed at the outside of the cooling
warehouse 14 and thereby, a motor for rotating the cooled-air feeding fan 24 i's set to the outside of the coolingwarehouse 14, the heat produced by the motor is not discharged into the coolingwarehouse 14 and thereby, cooling is efficiently performed. - Fig. 3 shows the flow of air in the vicinity of a cooling warehouse of another embodiment of the present invention. The cooled air produced by the air refrigerant
type cooling apparatus 1 is sent up to the inside of the coolingwarehouse 14 by a cooled-air introducing pipe 38. An in-warehouse-air taking-inpipe 34 is set in the coolingwarehouse 14. One end of thepipe 34 is opened at the inside of the coolingwarehouse 14. The other end of the in-warehouse-air taking-inpipe 34 is connected to the cooled-air introducing pipe 38 in the coolingwarehouse 14. A cooled-air feeding fan 36 to be rotated in the direction for supplying air to the connective portion with the cooled-air introducing pipe 38 from one end opened in the coolingwarehouse 14 is set in the in-warehouse-air taking-inpipe 34. - The cooled-
air introducing pipe 38 is connected to theduct 28 set in the coolingwarehouse 14 at the downstream side of the connective portion with the in-warehouse-air taking-inpipe 34. A plurality of cooled-air blow-offports 30 are formed on theduct 28. - In the case of the cooling
warehouse 14, cooled air produced by the air refrigeranttype cooling apparatus 1 flows to the cooled-air introducing pipe 38. The temperature of the cooled air is, for example, -60°C. The air in the coolingwarehouse 14 is taken into the in-warehouse-air taking-inpipe 34 by the cooled-air feeding fan 36. The temperature of the air is, for example, -30°C. The air incoming from the cooled-air introducing pipe 38 and the air incoming from the in-warehouse-air taking-inpipe 34 are mixed at the downstream side of the connective portion between the cooled-air introducing pipe 38 and the in-warehouse-air taking-inpipe 34. The temperature of themixed air 40 is, for example, - 40°C. Themixed air 40 blows off into the coolingwarehouse 14 from the cooled-air blow-offports 30 of theduct 28. - This embodiment also has a large quantity and speed of air similarly to the case of the embodiment described by referring to Fig. 2. For this embodiment, advantages are expected that agitation of the air in the cooling
warehouse 14 is accelerated and the temperature distribution become more uniform. Moreover, because the temperature of themixed air 40 is closer to the temperature in the coolingwarehouse 14 than the temperature of the cooled air sent from the air refrigeranttype cooling apparatus 1, there is an advantage that the temperature distribution in the coolingwarehouse 14 becomes flatter. - Moreover, in the case of this embodiment, it is unnecessary to perform the construction of opening a hole for setting the in-warehouse-air taking-in
pipe 22 to the wall face of the coolingwarehouse 14, setting the in-warehouse-air taking-inpipe 22 to the outside of the wall face of thewarehouse 14, and setting the cooled-air feeding fan 24 as shown in Fig. 2. The in-warehouse-air taking-inpipe 34 and the cooled-air feeding fan 36 are set in the coolingwarehouse 14. Therefore, when remodeling and forming an existing warehouse into a cooling warehouse of this embodiment, construction is easily completed. - In the case of this embodiment, an object to be cooled by the air refrigerant
type cooling apparatus 1 is a cooling warehouse to be closed by closing the door. Moreover, it is possible to apply the present invention to a semi-closing-type cooling warehouse in which frozen food is prepared when food passes through a space cooled by the air refrigeranttype cooling apparatus 1 by a belt conveyer. Furthermore, the present invention can be applied to a medical product reactor for cooling medicinal products in their manufacturing process. - The another embodiment of the air refrigerant type cooling apparatus of the present invention is shown in Fig. 4. The same number is put on the component similar to Fig. 1, and those explanations are omitted.
- The defrosting
machine 42 is intermediately connected between theexpansion turbine 12 and the coolingwarehouse 14. The outlet of the defrostingmachine 42 is connected to the inlet of the coolingwarehouse 14 through apiping 43. The piping 44 connected to the outlet of the coolingwarehouse 14 diverges to apiping 46 and a piping 48 through a three way valve. The piping 46 is connected to the inlet of the defrostingmachine 42. The piping 48 is connected to the lower temperature side piping of the second cooling heat exchanger. - When this type of the air refrigerant type cooling apparatus is driven, low temperature cooled air is exhausted from the
expansion turbine 12. After moisture is removed, the cooled air is introduced to the inside in the coolingwarehouse 14. The air inside in the coolingwarehouse 14 is extracted by thepiping 44. The air flowing in the piping 44 diverges to thepiping 46 and thepiping 48. The temperature of the air flowing in the piping 46 is equal to or a little higher than the temperature of the air inside in the coolingwarehouse 14. The air flowing in the piping 46 is introduced to the defrostingmachine 42, mixed with air exhausted from theexpansion turbine 12, and flows in the coolingwarehouse 14. - This embodiment also has a large quantity and speed of air similarly to the case of the embodiment described by referring to Fig. 2 and Fig. 3. For this embodiment, advantages are expected that agitation of the air in the cooling
warehouse 14 is accelerated and the temperature distribution become flatter. Moreover, because the temperature of themixed air 40 flowing in the piping 43 is closer to the temperature in the coolingwarehouse 14 than the temperature of the cooled air supplied by theexpansion turbine 12, there is an advantage that the temperature distribution in the coolingwarehouse 14 becomes flatter. The air flowing in the piping 46 is introduced to the coolingwarehouse 14 after defrosted by the defrostingmachine 42, the frost inside in the coolingwarehouse 14 decreases. - Fig. 5 shows an air refrigerant type cooling system applying the air refrigerant
type cooling apparatus 1 to a container. The air refrigerant type cooling system includes a vehicle 51 (freight car of railroad or ship are included) and acontainer 50 mounted on the vehicle 51. Thecontainer 50 loads the air refrigeranttype cooling apparatus 1 and the coolingwarehouse 14. The vehicle 51 loads abattery 52. The motor 4 and the fan 8 of the air refrigeranttype cooling apparatus 1 and the cooled-air feeding fan 24 or 36 of the coolingwarehouse 14 are fed by thebattery 52 and driven. The freight in the container is cooled and transported by the air refrigerant type cooling system.
Claims (6)
- A Cooling warehouse comprising:a first cooled air introducing pipe introducing a first cooled air cooled by an air refrigerant type cooling apparatus,a second cooled air introducing pipe taking in second cooled air in said cooling warehouse; andan air introducing port introducing a mixed air in which said first cooled air and said second cooled air are mixed into said cooling warehouse.
- A cooling warehouse according to claim 1, wherein said air introducing port is opened on a duct set in said cooling warehouse.
- A cooling warehouse according to claim 1, wherein said second cooled air introducing pipe is set to an outside of said cooling warehouse and one end of said second cooled air introducing pipe is opened on a wall face of said cooling warehouse.
- A cooling warehouse according to claim 1, wherein said second cooled air introducing pipe is set inside said cooling warehouse.
- An air refrigerant type cooling system comprising:an air refrigerant type cooling apparatus; anda cooling warehouse,wherein said air refrigerant type cooling apparatus includes:a compressor compressing a refrigerant air coming out of said cooling warehouse,a heat exchanger cooling said refrigerant air coming out of said compressor; andan expansion turbine expanding said refrigerant air coming out of said heat exchanger and supplying said refrigerant air to said cooling warehouse, andsaid cooling warehouse includes;a first cooled air introducing pipe introducing said refrigerant air coming out of said expansion turbine,a second cooled air introducing pipe taking in cooled air in said cooling warehouse; andan air introducing port introducing mixed air in which said refrigerant air introduced by said first cooled air introducing pipe and said cooled air are mixed into said cooling warehouse.
- A transporting apparatus comprising:an air refrigerant type cooling apparatus,a cooling warehouse; anda carriage mounting said air refrigerant type cooling apparatus and said cooling warehouse,wherein said air refrigerant type cooling apparatus includes:a compressor compressing an refrigerant air coming out of said cooling warehouse,a heat exchanger cooling said refrigerant air coming out of said compressor; andan expansion turbine expanding said refrigerant air coming out of said heat exchanger and supplying said refrigerant air to said cooling warehouse, andsaid cooling warehouse includes:a first cooled air introducing pipe introducing said refrigerant air coming out of said expansion turbine,a second cooled air introducing pipe taking in a cooled air in said cooling warehouse; andan air introducing port introducing a mixed air in which said refrigerant air introduced by said first cooled air introducing pipe and said cooled air are mixed into said cooling warehouse.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004224953 | 2004-07-30 | ||
PCT/JP2005/000107 WO2006011251A1 (en) | 2004-07-30 | 2005-01-07 | Cooling chamber and air refrigerant type cooling system |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1783444A1 true EP1783444A1 (en) | 2007-05-09 |
EP1783444A4 EP1783444A4 (en) | 2011-10-05 |
EP1783444B1 EP1783444B1 (en) | 2020-03-25 |
Family
ID=35786009
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05703373.0A Active EP1783444B1 (en) | 2004-07-30 | 2005-01-07 | Air refrigerant type cooling system |
Country Status (4)
Country | Link |
---|---|
US (2) | US20070169503A1 (en) |
EP (1) | EP1783444B1 (en) |
JP (1) | JPWO2006011251A1 (en) |
WO (1) | WO2006011251A1 (en) |
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WO2021083648A1 (en) * | 2019-10-30 | 2021-05-06 | Liconic Ag | High-efficiency low-temperature storage device |
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CN107202462B (en) * | 2016-03-16 | 2021-02-09 | 博西华电器(江苏)有限公司 | Refrigerator with a door |
WO2018067025A1 (en) * | 2016-10-04 | 2018-04-12 | Deta Engineering Llc | Moisture separator and air cycle refrigeration system containing such moisture separator |
KR102540771B1 (en) * | 2021-03-09 | 2023-06-07 | 제주대학교 산학협력단 | Ventilation cooling system using air refrigerant |
JP2023094906A (en) * | 2021-12-24 | 2023-07-06 | 三菱重工業株式会社 | Refrigerating container |
JP2023159757A (en) * | 2022-04-20 | 2023-11-01 | 三菱重工業株式会社 | Freezing container |
JP2023159754A (en) * | 2022-04-20 | 2023-11-01 | 三菱重工業株式会社 | Freezing container |
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Also Published As
Publication number | Publication date |
---|---|
EP1783444A4 (en) | 2011-10-05 |
WO2006011251A1 (en) | 2006-02-02 |
US20100313596A1 (en) | 2010-12-16 |
JPWO2006011251A1 (en) | 2008-05-01 |
US20070169503A1 (en) | 2007-07-26 |
EP1783444B1 (en) | 2020-03-25 |
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