US3675439A - Detachable container refrigeration system - Google Patents
Detachable container refrigeration system Download PDFInfo
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- US3675439A US3675439A US75563A US3675439DA US3675439A US 3675439 A US3675439 A US 3675439A US 75563 A US75563 A US 75563A US 3675439D A US3675439D A US 3675439DA US 3675439 A US3675439 A US 3675439A
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- United States
- Prior art keywords
- refrigerant
- porthole
- shipping container
- flow control
- temperature sensing
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 40
- 239000003507 refrigerant Substances 0.000 claims description 66
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000004075 alteration Effects 0.000 abstract description 4
- 239000007921 spray Substances 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 241000220317 Rosa Species 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- RGCLLPNLLBQHPF-HJWRWDBZSA-N phosphamidon Chemical compound CCN(CC)C(=O)C(\Cl)=C(/C)OP(=O)(OC)OC RGCLLPNLLBQHPF-HJWRWDBZSA-N 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/74—Large containers having means for heating, cooling, aerating or other conditioning of contents
- B65D88/745—Large containers having means for heating, cooling, aerating or other conditioning of contents blowing or injecting heating, cooling or other conditioning fluid inside the container
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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
- F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
- F25D19/02—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors plug-in type
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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
- F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
- F25D3/10—Devices using other cold materials; Devices using cold-storage bodies using liquefied gases, e.g. liquid air
- F25D3/105—Movable containers
Definitions
- This invention pertains to a refrigeration apparatus for detachable mounting on shipping containers and especially shipping containers which are designed to be refrigerated using cold air which is introduced and removed from said containcrs by means of portholes provided therein.
- Containerization as applied to products which must be refrigerated has resulted in the development of numerous techniques for keeping such containers refrigerated.
- One such system employs the circulation of refrigerated air through shipping containers while they are in transit on shipboard. However, once such refrigerated containers reach their ports of destination some means of maintaining refrigeration in said containers is necessary to prevent spoilage of the container's contents.
- part-time refrigeration system For a part-time or intermediate refrigeration system to be successful in use with such refrigerated shipping containers the part-time refrigeration system must require a minimum of alteration of the container itself, must detachably mount on the outside of such container, must occupy a minimum of space, must be virtually free of maintenance requirements once installed, and must not require external power to perform the refrigeration function.
- the refrigeration system must be able to cool down the container very quickly, maintain uniform temperature control and must require very little time to connect and disconnect to the refrigerated shipping container.
- the use of mechanical refrigeration systems for part-time refrigeration of such containers has been found to be undesirable because such systems are expensive, lack quick cool-down capacity, uniform temperature control and have a high incidence of mechanical failure owing to the complexity of the equipment required for mechanical refrigeration.
- cryogenic in-transit refrigeration systems have been permanently attached to the product storage container.
- the cost both in terms of equipment required and space lost using permanently installed cryogenic refrigeration systems renders their use impractical.
- the objects of this invention are to provide a cryogenic refrigeration apparatus for use with thermally insulated shipping containers which apparatus requires a minimum of alteration to the container, attaches to the outside of said container, occupies extremely little space compared with its refrigeration capacity, is virtually maintenance-free, is selfcontained and is capable of providing substantially uniform desired temperature within the shipping container.
- an apparatus for refrigeration of stored product within a portable thermally insulated shipping container having at least one porthole therein which apparatus comprises a liquefied gas refrigerant storage tank with associated flow control means removably attached to said shipping container, a refrigerant dispensing means and a temperature sensing means disposed within said shipping container; a porthole closure assembly arranged to detachably seal said porthole; and connection means disposed through said porthole closure assembly and arranged to operably connect said flow control means with said refrigerant dispensing means and said temperature sensing means such that refrigerant flow is responsive to the temperature sensed by said temperature sensing means within said shipping container.
- FIG. 1 is a cross-sectional elevation view of a thermally insulated container having a liquefied gas refrigeration system embodiment of this invention attached to the container's upper forward portion.
- FIG. 2 is a perspective view of the container shown in crosssection in FIG. I.
- FIG. 3 shows a cross-sectional elevation view of the upper forward port closure assembly of FIG. 1.
- FIG. 1 of this invention shows a thermally insulated shipping container 1 having access doors 2 and containing refrigerated product 3.
- a liquefied gas refrigerant storage tank 4 and refrigerant flow control means 5 are disposed within a clip-on assembly 6 which attaches to shipping container I by means of bolts 7.
- Shipping containers typically measure about 8 by 8 by 20 feet and the shipping containers preferred for use with this invention are those which have refrigerant air circulation porthole: such as 8 and 9.
- a perforated refrigerant dispensing conduit 10 is permanently installed in the upper portion of shipping container 1 and preferably is located quite near the ceiling to prevent interference with product storage within the container.
- Temperature sensing means II is removably attached to mounting bracket 12 which is permanently attached to shipping container 1 proximate air circulation porthole 8. Porthole 9 which is not necessary to this invention is shown with a plug therein.
- FIG. 2 shows the shipping container 1 of FIG. I with clip-on assembly 6 in perspective view.
- liquefied gas refrigerant storage tank 4 is disposed within clip-on assembly 6 and supplies refrigerant to perforated refrigerant dispensing conduit 10 through porthole II responsive to temperature sensing means 11 to maintain refrigerated product 3 at a predetermined temperature.
- FIG. 3 shows the portion of shipping container 1 containing porthole 8 along with clip-on assembly 6.
- liquefied gas refrigerant storage tank 4 and associated flow control means 5 are mounted within clip-on assembly 6.
- perforated refrigerant dispensing conduit 10 which is permanently disposed within shipping container I and detachable temperature sensing means 11 with its associated mounting bracket 12 can also be seen.
- Porthole closure assembly 13 can be seen in detail for the first time in this figure having a gas pressure relief means 14, such as a mushroomshaped silicon rubber check valve, disposed therein to relieve excessive pressures generated by evaporating liquefied refrigerant within shipping container I.
- Porthole closure assembly I3 is arranged to detachably gas-tightly seal porthole 8 by means of sealing gasket 15 and attachment locks 16. Temperature sensing means II is connected to temperature sensing means connector 17 by means of porthole closure assembly connecting wire 18. Temperature sensing means connector 17 is rigidly attached to the outside of porthole closure assembly 13. Porthole closure refrigerant conduit 19 passes through porthole closure assembly 13 and attaches at its outer end to a refrigerant connector fining 20 which is rigidly attached to the outside of porthole closure assembly 13 and at the other end is removably attached to the perforated refrigerant distribution conduit 10 by coupling 21.
- Refrigerant flow control means 5 is detachably connected to said temperatul'e sensing means connector fitting 17 by flow control connector wire 22 such that refrigerant flow control is responsive to temperature sensed within shipping container I by temperature sensing means 11.
- Said flow control means 5 is operably disposed within refrigerant conduit 23 connected at one end to said refrigerant storage tank 4 and at the other end detachably connected to said porfliole closure refrigerant connector fitting 20. The operable disposition of control means 5 within refrigerant conduit 23 is carried out by refrigerant flow control valve 24.
- Clip-on assembly 6 is preferably provided with built-in adaptive means for receiving a fork lift or crane-installing apparatus, in particular fork lifl channels 25 shown in cross-section in FIG. 3 are provided perpendicular to the axis of liquefied gas refrigeration storage tank 4 and at the bottom portion of clip-on assembly 6.
- one or more eye bolts 26 are attached to the top portion of clip-on assembly 6 such that said clip-on assembly can be raised into position proximate porthole 8 by means of a crane.
- porthole closure assembly 13 comprises attachment locks 16, gas pressure relief means 14, temperature sensing means connector 17 with associated porthole assembly closure wire 18, and temperature sensing means 11 as well as refrigeration connector fitting 20 with its associated porthole closure refrigeration conduit 19 along with sealing gasket 15.
- a workman first reaches in through porthole 8 and inserts temperature sensing means 11 into mounting bracket 12 which is rigidly attached to the inner wall or ceiling of shipping container l. The workman then attaches porthole closure refrigeration conduit 19 to coupling 21. The installation of temperature sensing means 11 and porthole closure refrigeration conduit 19 may be accomplished in reverse order if desired.
- porthole closure assembly 13 is inserted into porthole 8 and locked into place by means of attachment locks 16.
- clipon assembly 6 is raised into position proximate porthole closure assembly 13 by means of a fork lift or crane and bolts 7 are engaged to securely attach clipon assembly 6 to shipping container 1.
- control connector wire 22 is attached to temperature sensing means connector l7 and refrigeration conduit 23 is attached to refrigeration connector fitting 20.
- refrigeration flow control means can be turned on to begin refrigeration of shipping container 1.
- flow control connector wire 22 and refrigeration conduit 23 can alternatively be made so long that their disconnection from the porthole closure assembly would not be required. Also, it should be clear that flow control connector wire 22 and refrigeration conduit 23 can be rigidly connected to porthole closure assembly 13 at temperature sensing means connector 17 and refrigeration connector fitting 20 and the connections to refrigeration flow control means 5 made detachable.
- refrigerant dispensing means may comprise perforated refrigerant dispensing conduit which is permanently or removably installed or can comprise suitable substitutes such as a spray nozzle attached to the inside portion of the porthole closure assembly.
- the temperature sensing means can comprise an electrical temperature sensor such as a precision wire wound resistance or a thermistor or can comprise a pneumatic temperature sensor. The temperature sensor may be mounted on the inside portion of the porthole closure assembly as well as elsewhere within the storage container.
- connection means refers to items 17 through 23 inclusive shown in the drawings as well as suitable alternatives to this combination of elements which accomplish the function of operably connecting flow control means 5 with the refrigerant dispensing means and the temperature sensing means.
- Flow control means 5 is arranged to sense the shipping container temperature, compare such sensed temperature with a predetemiined desired temperature and to actuate the refrigerant flow control valve, shown as item 24 in FIG. 3, when refrigeration is required as indicated by the difference between the shipping container temperature and the predetermined desired temperature.
- Apparatus for refrigeration of stored product within a portable thermally insulated shipping container having at least one porthole therein which apparatus comprises a liquefied gas refrigerant storage tank with associated flow control means removably attached to said shipping container; a refrigerant dispensing means and a temperature sensing means disposed within said shipping container; a porthole closure assembly arranged to detachably gas tightly seal said porthole; pressure relief means within said porthole closure assembly;
- connection means disposed through said porthole closure assembly and arranged to operably connect said flow control means with said refrigerant dispensing means and said temperature sensing means such that refrigerant flow is responsive to the temperature sensed by said temperature sensing means within said shipping container; and detachable couplings within said connection means between said porthole closure assembly and said flow control means.
- refrigerant dispensing means comprises a perforated conduit means disposed within the upper portion of said shipping container.
- said flow control means comprises a refrigerant flow control valve operably disposed between said connection means and said refrigerant storage tank; and a refrigerant flow control valve control means responsive to said temperature sensing means.
- Apparatus for refrigerating stored product within a portable thermally insulated shipping container having at least one porthole therein which apparatus comprises a liquefied gas refrigerant storage tank with associated flow control means removably attached to said shipping container; a perforated refrigerant dispensing conduit means disposed within the upper portion of said shipping container; temperature sensing means detachably disposed within said shipping container proximate the shipping container porthole; a porthole closure assembly arranged to detachably, gas tightly seal said porthole, said closure assembly having at least one gas pressure relief means therein; said temperature sensing means being connected through said porthole closure assembly to a temperature sensing means connector which is mounted outside of said porthole closure assembly; a porthole closure refrigerant conduit which passes through said closure and attaches at one end to a refrigerant connector fitting mounted outside of said closure and is removably attachable at the other end to the perforated refrigerant dis ensing conduit within said shipping container; said refrigerant flow control means being
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Abstract
A cryogenic liquid spray refrigeration system detachably mounted on a portable product shipping container for in-transit refrigeration of said container in which refrigeration system requires minimal alteration of said shipping container.
Description
United States Patent Maurer 51 July 11, 1972 1541 DETACHABLE CONTAINER 56; References Cited [72] PM wmimvme 3,269, 33 8/1966 Dixon "62/514 73 i Union Carbide corpora New Ycrk 2,735,277 2/1956 Clark ..62/323 8 NY. on, 2,475,755 7/ l 949 Pearson r r "62/514 3,287,925 I 1/!966 Kane r r r r r ..62/5 14 Filed: n 1970 328L075 [0/1966 Smyers 62/514 [2]] 75563 Priman-Examiner-Meyer Perlin Atromey-Paui A, Rose, Harrie M. Humphreys and John C. 521 0.5.0 ..62/223,62/298,62/449, LeFever 62/5I4 [51] im. Cl F25h4l/04 ABSTRACT [58] Field ofSearch "62/222,514, 223, 449, 298, A cryogenic liquid spray refrigeration system detachably 62/323 mounted on a portable product shipping container for intransit refrigeration of said container in which refrigeration system requires minimal alteration of said shipping container.
5Clai|m,3DrawingHgures PATENTEDJULH I972 3.675.439
New developments in the technology of shipping refrigerated products over land and sea have resulted in the rapid growth of containerized shipping. Containerization as applied to products which must be refrigerated has resulted in the development of numerous techniques for keeping such containers refrigerated. One such system employs the circulation of refrigerated air through shipping containers while they are in transit on shipboard. However, once such refrigerated containers reach their ports of destination some means of maintaining refrigeration in said containers is necessary to prevent spoilage of the container's contents. For a part-time or intermediate refrigeration system to be successful in use with such refrigerated shipping containers the part-time refrigeration system must require a minimum of alteration of the container itself, must detachably mount on the outside of such container, must occupy a minimum of space, must be virtually free of maintenance requirements once installed, and must not require external power to perform the refrigeration function. In addition, the refrigeration system must be able to cool down the container very quickly, maintain uniform temperature control and must require very little time to connect and disconnect to the refrigerated shipping container. The use of mechanical refrigeration systems for part-time refrigeration of such containers has been found to be undesirable because such systems are expensive, lack quick cool-down capacity, uniform temperature control and have a high incidence of mechanical failure owing to the complexity of the equipment required for mechanical refrigeration.
To date, cryogenic in-transit refrigeration systems have been permanently attached to the product storage container. However, in view of the large number of refrigerated containers employed in container shipping and also because a given container may or may not be used to ship refrigerated product at all times, the cost both in terms of equipment required and space lost using permanently installed cryogenic refrigeration systems renders their use impractical.
The objects of this invention are to provide a cryogenic refrigeration apparatus for use with thermally insulated shipping containers which apparatus requires a minimum of alteration to the container, attaches to the outside of said container, occupies extremely little space compared with its refrigeration capacity, is virtually maintenance-free, is selfcontained and is capable of providing substantially uniform desired temperature within the shipping container.
SUMMARY OF THE INVENTION The objects of this invention are accomplished by an apparatus for refrigeration of stored product within a portable thermally insulated shipping container having at least one porthole therein, which apparatus comprises a liquefied gas refrigerant storage tank with associated flow control means removably attached to said shipping container, a refrigerant dispensing means and a temperature sensing means disposed within said shipping container; a porthole closure assembly arranged to detachably seal said porthole; and connection means disposed through said porthole closure assembly and arranged to operably connect said flow control means with said refrigerant dispensing means and said temperature sensing means such that refrigerant flow is responsive to the temperature sensed by said temperature sensing means within said shipping container.
DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional elevation view of a thermally insulated container having a liquefied gas refrigeration system embodiment of this invention attached to the container's upper forward portion.
FIG. 2 is a perspective view of the container shown in crosssection in FIG. I.
FIG. 3 shows a cross-sectional elevation view of the upper forward port closure assembly of FIG. 1.
DETAILED DESCRIPTION FIG. 1 of this invention shows a thermally insulated shipping container 1 having access doors 2 and containing refrigerated product 3. A liquefied gas refrigerant storage tank 4 and refrigerant flow control means 5 are disposed within a clip-on assembly 6 which attaches to shipping container I by means of bolts 7. Shipping containers typically measure about 8 by 8 by 20 feet and the shipping containers preferred for use with this invention are those which have refrigerant air circulation porthole: such as 8 and 9. A perforated refrigerant dispensing conduit 10 is permanently installed in the upper portion of shipping container 1 and preferably is located quite near the ceiling to prevent interference with product storage within the container. Temperature sensing means II is removably attached to mounting bracket 12 which is permanently attached to shipping container 1 proximate air circulation porthole 8. Porthole 9 which is not necessary to this invention is shown with a plug therein.
FIG. 2 shows the shipping container 1 of FIG. I with clip-on assembly 6 in perspective view. As can be seen, liquefied gas refrigerant storage tank 4 is disposed within clip-on assembly 6 and supplies refrigerant to perforated refrigerant dispensing conduit 10 through porthole II responsive to temperature sensing means 11 to maintain refrigerated product 3 at a predetermined temperature.
FIG. 3 shows the portion of shipping container 1 containing porthole 8 along with clip-on assembly 6. As can be seen, liquefied gas refrigerant storage tank 4 and associated flow control means 5 are mounted within clip-on assembly 6. In ad dition, perforated refrigerant dispensing conduit 10 which is permanently disposed within shipping container I and detachable temperature sensing means 11 with its associated mounting bracket 12 can also be seen. Porthole closure assembly 13 can be seen in detail for the first time in this figure having a gas pressure relief means 14, such as a mushroomshaped silicon rubber check valve, disposed therein to relieve excessive pressures generated by evaporating liquefied refrigerant within shipping container I. Porthole closure assembly I3 is arranged to detachably gas-tightly seal porthole 8 by means of sealing gasket 15 and attachment locks 16. Temperature sensing means II is connected to temperature sensing means connector 17 by means of porthole closure assembly connecting wire 18. Temperature sensing means connector 17 is rigidly attached to the outside of porthole closure assembly 13. Porthole closure refrigerant conduit 19 passes through porthole closure assembly 13 and attaches at its outer end to a refrigerant connector fining 20 which is rigidly attached to the outside of porthole closure assembly 13 and at the other end is removably attached to the perforated refrigerant distribution conduit 10 by coupling 21. Refrigerant flow control means 5 is detachably connected to said temperatul'e sensing means connector fitting 17 by flow control connector wire 22 such that refrigerant flow control is responsive to temperature sensed within shipping container I by temperature sensing means 11. Said flow control means 5 is operably disposed within refrigerant conduit 23 connected at one end to said refrigerant storage tank 4 and at the other end detachably connected to said porfliole closure refrigerant connector fitting 20. The operable disposition of control means 5 within refrigerant conduit 23 is carried out by refrigerant flow control valve 24.
Clip-on assembly 6 is preferably provided with built-in adaptive means for receiving a fork lift or crane-installing apparatus, in particular fork lifl channels 25 shown in cross-section in FIG. 3 are provided perpendicular to the axis of liquefied gas refrigeration storage tank 4 and at the bottom portion of clip-on assembly 6. Alternatively, one or more eye bolts 26 are attached to the top portion of clip-on assembly 6 such that said clip-on assembly can be raised into position proximate porthole 8 by means of a crane.
In operation, a shipping container such as that depicted in FIGS. 1 and 2 can be quickly fitted with a detachable container refrigeration system of this invention. At this point, porthole closure assembly 13 comprises attachment locks 16, gas pressure relief means 14, temperature sensing means connector 17 with associated porthole assembly closure wire 18, and temperature sensing means 11 as well as refrigeration connector fitting 20 with its associated porthole closure refrigeration conduit 19 along with sealing gasket 15. A workman first reaches in through porthole 8 and inserts temperature sensing means 11 into mounting bracket 12 which is rigidly attached to the inner wall or ceiling of shipping container l. The workman then attaches porthole closure refrigeration conduit 19 to coupling 21. The installation of temperature sensing means 11 and porthole closure refrigeration conduit 19 may be accomplished in reverse order if desired. Thereafter, porthole closure assembly 13 is inserted into porthole 8 and locked into place by means of attachment locks 16. Thereafter, clipon assembly 6 is raised into position proximate porthole closure assembly 13 by means of a fork lift or crane and bolts 7 are engaged to securely attach clipon assembly 6 to shipping container 1. At this point, control connector wire 22 is attached to temperature sensing means connector l7 and refrigeration conduit 23 is attached to refrigeration connector fitting 20. At this point, refrigeration flow control means can be turned on to begin refrigeration of shipping container 1.
it should be apparent from the foregoing disclosure that flow control connector wire 22 and refrigeration conduit 23 can alternatively be made so long that their disconnection from the porthole closure assembly would not be required. Also, it should be clear that flow control connector wire 22 and refrigeration conduit 23 can be rigidly connected to porthole closure assembly 13 at temperature sensing means connector 17 and refrigeration connector fitting 20 and the connections to refrigeration flow control means 5 made detachable.
it should be understood that refrigerant dispensing means may comprise perforated refrigerant dispensing conduit which is permanently or removably installed or can comprise suitable substitutes such as a spray nozzle attached to the inside portion of the porthole closure assembly. The temperature sensing means can comprise an electrical temperature sensor such as a precision wire wound resistance or a thermistor or can comprise a pneumatic temperature sensor. The temperature sensor may be mounted on the inside portion of the porthole closure assembly as well as elsewhere within the storage container.
The generic term connection means" as used herein refers to items 17 through 23 inclusive shown in the drawings as well as suitable alternatives to this combination of elements which accomplish the function of operably connecting flow control means 5 with the refrigerant dispensing means and the temperature sensing means. Flow control means 5 is arranged to sense the shipping container temperature, compare such sensed temperature with a predetemiined desired temperature and to actuate the refrigerant flow control valve, shown as item 24 in FIG. 3, when refrigeration is required as indicated by the difference between the shipping container temperature and the predetermined desired temperature.
What is claimed is:
1. Apparatus for refrigeration of stored product within a portable thermally insulated shipping container having at least one porthole therein, which apparatus comprises a liquefied gas refrigerant storage tank with associated flow control means removably attached to said shipping container; a refrigerant dispensing means and a temperature sensing means disposed within said shipping container; a porthole closure assembly arranged to detachably gas tightly seal said porthole; pressure relief means within said porthole closure assembly;
connection means disposed through said porthole closure assembly and arranged to operably connect said flow control means with said refrigerant dispensing means and said temperature sensing means such that refrigerant flow is responsive to the temperature sensed by said temperature sensing means within said shipping container; and detachable couplings within said connection means between said porthole closure assembly and said flow control means.
2. An apparatus as described in claim 1 wherein the refrigerant dispensing means comprises a perforated conduit means disposed within the upper portion of said shipping container.
3. An apparatus as described in claim 1 wherein the temperature sensing means is detachably connected to said shipping container.
4. An apparatus as described in claim 1 wherein said flow control means comprises a refrigerant flow control valve operably disposed between said connection means and said refrigerant storage tank; and a refrigerant flow control valve control means responsive to said temperature sensing means.
5. Apparatus for refrigerating stored product within a portable thermally insulated shipping container having at least one porthole therein, which apparatus comprises a liquefied gas refrigerant storage tank with associated flow control means removably attached to said shipping container; a perforated refrigerant dispensing conduit means disposed within the upper portion of said shipping container; temperature sensing means detachably disposed within said shipping container proximate the shipping container porthole; a porthole closure assembly arranged to detachably, gas tightly seal said porthole, said closure assembly having at least one gas pressure relief means therein; said temperature sensing means being connected through said porthole closure assembly to a temperature sensing means connector which is mounted outside of said porthole closure assembly; a porthole closure refrigerant conduit which passes through said closure and attaches at one end to a refrigerant connector fitting mounted outside of said closure and is removably attachable at the other end to the perforated refrigerant dis ensing conduit within said shipping container; said refrigerant flow control means being detachably connected to said temperature sensing means connector fitting such that refrigerant flow control is responsive to temperature sensed by said temperature sensing means and said flow control means contains a refrigerant flow control valve which is operably disposed within a refrigerant conduit connected at one end to said refrigerant storage tank and at the other end detachably connected to said porthole closure refrigerant connector fitting.
Claims (5)
1. Apparatus for refrigeration of stored product within a portable thermally insulated shipping container having at least one porthole therein, which apparatus comprises a liquefied gas refrigerant storage tank with associated flow control means removably attached to said shipping container; a refrigerant dispensing means and a temperature sensing means disposed within said shipping container; a porthole closure assembly arranged to detachably gas tightly seal said porthole; pressure relief means within said porthole closure assembly; connection means disposed through said porthole closure assembly and arranged to operably connect said flow control means with said refrigerant dispensing means and said temperature sensing means such that refrigerant flow is responsive to the temperature sensed by said temperature sensing means within said shipping container; and detachable couplings within said connection means between said porthole closure assembly and said flow control means.
2. An apparatus as described in claim 1 wherein the refrigerant dispensing means comprises a perforated conduit means disposed within the upper portion of said shipping container.
3. An apparatus as described in claim 1 wherein the temperature sensing means is detachably connected to said shipping container.
4. An apparatus as described in claim 1 wherein said flow control means comprises a refrigerant flow control valve operably disposed between said connection means and said refrigerant storage tank; and a refrigerant flow control valve control means responsive to said temperature sensing means.
5. Apparatus for refrigerating stored product within a portable thermally insulated shipping container having at least one porthole therein, which apparatus comprises a liquefied gas refrigerant storage tank with associated flow control means removably attached to said shipping container; a perforated refrigerant dispensing conduit means disposed within the upper portion of said shipping container; temperature sensing means detachably disposed within said shipping container proximate the shipping container porthole; a porthole closure assembly arranged to detachably, gas tightly seal said porthole, said closure assembly having at least one gas pressure relief means therein; said temperature sensing means being connected through said porthole closure assembly to a temperature sensing means connector which is mounted outside of said porthole closure assembly; a porthole closure refrigerant conduit which passes through said closure and attaches at one end to a refrigerant connector fitting mounted outside of said closure and is removably attachable at the other end to the perforated refrigerant dispensing conduit within said shipping container; said refrigerant flow control means being detachably connected to said temperature sensing means connector fitting such that refrigerant flow control is responsive to temperature sensed by said temperature sensing means and said flow control means contains a refrigerant flow control valve which is operably disposed within a refrigerant conduit connected at one end to said refrigerant storage tank and at the other end detachably connected to said porthole closure refrigerant connector fitting.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US7556370A | 1970-09-25 | 1970-09-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3675439A true US3675439A (en) | 1972-07-11 |
Family
ID=22126574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US75563A Expired - Lifetime US3675439A (en) | 1970-09-25 | 1970-09-25 | Detachable container refrigeration system |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3675439A (en) |
| AU (1) | AU452394B2 (en) |
| CA (1) | CA942081A (en) |
| DE (1) | DE2143357B2 (en) |
| FR (1) | FR2107960B1 (en) |
| GB (1) | GB1301814A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4033140A (en) * | 1976-04-02 | 1977-07-05 | Air Products And Chemicals, Inc. | Refrigeration system for shipping container |
| US4038833A (en) * | 1975-09-16 | 1977-08-02 | Foessl John K | Detachable refrigeration system for containers |
| US4048813A (en) * | 1975-06-11 | 1977-09-20 | Union Carbide Corporation | Detachable container refrigeration system |
| US5727353A (en) * | 1996-04-04 | 1998-03-17 | Getz; John E. | Portable medical diagnostic suite |
| EP4060258A4 (en) * | 2020-01-06 | 2022-12-21 | Qingdao Haier Refrigerator Co., Ltd. | Refrigeration module and refrigerator |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2384219A1 (en) * | 1977-03-16 | 1978-10-13 | Air Prod Ltd | Cooling systems for goods containers - has spray jets for liquid coolant mounted in rectangular framework attached to container side |
| FR2462673A1 (en) * | 1979-08-03 | 1981-02-13 | Carboxyque Francaise | REFRIGERATION CHAMBER |
| DE3829435A1 (en) * | 1988-08-31 | 1990-03-08 | Horst Qualmann | DEVICE FOR GENERATING AN ARTIFICIAL ATMOSPHERE IN A TRANSPORT CONTAINER |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2475755A (en) * | 1946-11-18 | 1949-07-12 | Pearson Inc | Vehicle cooling apparatus using carbon dioxide |
| US2735277A (en) * | 1956-02-21 | clark | ||
| US3269133A (en) * | 1964-04-01 | 1966-08-30 | Best Fertilizers Co | Apparatus for transporting produce under controlled atmosphere |
| US3281075A (en) * | 1964-04-01 | 1966-10-25 | Koehler Dayton | Refrigeration system including pressure actuated valve |
| US3287925A (en) * | 1963-12-05 | 1966-11-29 | Union Carbide Corp | Intransit liquefied gas refrigeration system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1501207A1 (en) * | 1965-03-20 | 1969-08-14 | Agefko Kohlensaeure Werke Gmbh | All-purpose container transport vehicle, especially for the transport of frozen goods |
-
1970
- 1970-09-25 US US75563A patent/US3675439A/en not_active Expired - Lifetime
-
1971
- 1971-08-16 CA CA120,581A patent/CA942081A/en not_active Expired
- 1971-08-27 GB GB4022271A patent/GB1301814A/en not_active Expired
- 1971-08-30 FR FR717131400A patent/FR2107960B1/fr not_active Expired
- 1971-08-30 DE DE2143357A patent/DE2143357B2/en not_active Withdrawn
- 1971-08-30 AU AU32848/71A patent/AU452394B2/en not_active Expired
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2735277A (en) * | 1956-02-21 | clark | ||
| US2475755A (en) * | 1946-11-18 | 1949-07-12 | Pearson Inc | Vehicle cooling apparatus using carbon dioxide |
| US3287925A (en) * | 1963-12-05 | 1966-11-29 | Union Carbide Corp | Intransit liquefied gas refrigeration system |
| US3269133A (en) * | 1964-04-01 | 1966-08-30 | Best Fertilizers Co | Apparatus for transporting produce under controlled atmosphere |
| US3281075A (en) * | 1964-04-01 | 1966-10-25 | Koehler Dayton | Refrigeration system including pressure actuated valve |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4048813A (en) * | 1975-06-11 | 1977-09-20 | Union Carbide Corporation | Detachable container refrigeration system |
| US4038833A (en) * | 1975-09-16 | 1977-08-02 | Foessl John K | Detachable refrigeration system for containers |
| US4033140A (en) * | 1976-04-02 | 1977-07-05 | Air Products And Chemicals, Inc. | Refrigeration system for shipping container |
| US5727353A (en) * | 1996-04-04 | 1998-03-17 | Getz; John E. | Portable medical diagnostic suite |
| EP4060258A4 (en) * | 2020-01-06 | 2022-12-21 | Qingdao Haier Refrigerator Co., Ltd. | Refrigeration module and refrigerator |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2143357B2 (en) | 1974-10-17 |
| GB1301814A (en) | 1973-01-04 |
| AU452394B2 (en) | 1974-09-05 |
| FR2107960A1 (en) | 1972-05-12 |
| FR2107960B1 (en) | 1974-06-21 |
| CA942081A (en) | 1974-02-19 |
| AU3284871A (en) | 1973-03-08 |
| DE2143357A1 (en) | 1973-04-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AS | Assignment |
Owner name: HARSCO CORPORATION, HARRISBURG, PA. A CORP. OF DE. Free format text: ASSIGNMENT OF ASSIGNORS INTEREST. SUBJECT TO LICENSE RECITED;ASSIGNOR:UNION CARBIDE CORPORATION, A CORP. OF N.Y.;REEL/FRAME:004500/0021 Effective date: 19850722 |
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| STCF | Information on status: patent grant |
Free format text: PATENTED FILE - (OLD CASE ADDED FOR FILE TRACKING PURPOSES) |