EP3412271A1 - Appareil de refroidissement portable à récupération de liquide réfrigérant - Google Patents
Appareil de refroidissement portable à récupération de liquide réfrigérant Download PDFInfo
- Publication number
- EP3412271A1 EP3412271A1 EP18176564.5A EP18176564A EP3412271A1 EP 3412271 A1 EP3412271 A1 EP 3412271A1 EP 18176564 A EP18176564 A EP 18176564A EP 3412271 A1 EP3412271 A1 EP 3412271A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooling
- refrigerant fluid
- cooling apparatus
- solenoid valve
- cooling circuit
- 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 172
- 239000003507 refrigerant Substances 0.000 title claims abstract description 49
- 238000011084 recovery Methods 0.000 title claims abstract description 29
- 239000007788 liquid Substances 0.000 title abstract description 20
- 239000012530 fluid Substances 0.000 claims abstract description 62
- 238000010168 coupling process Methods 0.000 claims abstract description 15
- 238000005859 coupling reaction Methods 0.000 claims abstract description 15
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims abstract description 10
- 230000008878 coupling Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims description 2
- 238000011105 stabilization Methods 0.000 claims description 2
- 238000002309 gasification Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G17/00—Coffins; Funeral wrappings; Funeral urns
- A61G17/002—Coffins with cooling arrangements for the corpse
-
- 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
- F25B45/00—Arrangements for charging or discharging refrigerant
-
- 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
- F25D15/00—Devices not covered by group F25D11/00 or F25D13/00, e.g. non-self-contained movable devices
-
- 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
- F25B2400/19—Pumping down refrigerant from one part of the cycle to another part of the cycle, e.g. when the cycle is changed from cooling to heating, or before a defrost cycle is started
-
- 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
- F25B41/40—Fluid line 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
- F25D2400/12—Portable refrigerators
-
- 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
- F25D31/00—Other cooling or freezing apparatus
- F25D31/001—Plate freezers
Definitions
- the present invention relates to a portable cooling apparatus used for low temperature maintaining of a bier within a coffin.
- the present invention relates to an optimized cooling apparatus for the refrigerant liquid or fluid recovery phase from the cooling plate within the system once the maintaining operative activity of the cooling of the plate has ended.
- cooling apparatuses comprising at least two distinct components exist: a main cooling circuit with relative compressor and at least one cooling plate constituting the evaporator of the cooling circuit.
- a refrigerant fluid circulates, for instance freon; however, the use of other less polluting fluids, the so-called ozone-friends, has been spreading for some years.
- the cooling plate usually comprises a serpentine of the roll-bond type pre-loaded with the refrigerant fluid and removably connected to the main cooling circuit by means of sealing and fast-coupling connections located on the inlet and outlet ducts of the serpentine.
- the components of the main cooling circuit are re-usable for being connected to other cooling plates; conversely, the cooling plate is a disposable or single-use element of the cooling circuit since it is left in the coffin even after the final closure.
- This procedure consists in re-absorbing the refrigerant fluid left within the cooling plate after the end of the service.
- this gross modus operandi involves several drawbacks. Mainly this clearly involves a non-complete recovery of the refrigerant gas. Furthermore, there is an ecological impact, though minimized by the adoption of a last-generation gas, since the cut of the tube inevitably results in the loss of a large quantity of refrigerant fluid due to the difference in pressure between the liquid/gas in the tube and the environment pressure.
- An object of the present invention is thus to totally recover the quantity of the left refrigerant fluid present in the cooling plate once the operative phase has ended. Said object is linked to the need of reducing the number of the expensive filling up operations to be periodically carried out in order to ensure a proper autonomy to the cooling apparatus, but also to ecological needs.
- a further object is to prevent the dispersion of the refrigerant fluid in the environment during the detachment of the cooling plate from the cooling circuit.
- the invention has the object of making the use of the cooling apparatus simpler and more practical, so that it can be activated not only directly by the user, but also through a remote control that can be operated by any fixed or mobile telecommunication device.
- a further object is to provide a cooling apparatus able to keep track of the possible malfunctions, so as to keep memory of the problems encountered during the maintenance phase.
- Yet a further object is to provide for the cooling apparatus to be equipped with an optimized casing for the transport phase of the same, duly considering the problems linked to weight, size and support for dragging the cooling apparatus itself.
- an object of the present invention is to provide a simple and intuitive configuration to make the cooling apparatus of practical use by any user, even the non-specialized ones.
- the solution idea underlying the present invention is to provide a cooling apparatus able to commutate between two alternative circuits to be used in the operative phase and in the liquid recovery phase from the cooling plate, respectively.
- a cooling apparatus comprising a cooling circuit and a fast-coupling cooling plate, which further comprises a three-way solenoid valve on the delivery branch of the cooling plate. Said valve is controlled by a control electronic system of the functional states of said circuit.
- the invention relates to a cooling apparatus (1) for coffins, comprising
- the cooling circuit of the cooling apparatus comprises a first two-way solenoid valve and a second two-way solenoid valve on the delivery and return branches of said cooling plate respectively, to prevent the backflow of the refrigerant fluid in the actuating, operative and refrigerant liquid recovery phases.
- the above unidirectional valve is a two-way solenoid valve placed between the three-way solenoid valve and the heat exchanger, to prevent the backflow of fluid in the recovery phase of said refrigerant fluid.
- the cooling circuit of the cooling apparatus comprises a first pressure transducer, for detecting the minimum operative pressure of the cooling circuit.
- a second pressure transducer is moreover comprised, for detecting the maximum operative pressure of said cooling circuit.
- the cooling circuit of the cooling apparatus further comprises a pressure switch cooperating with the first pressure transducer, for the control of the correct coupling of the cooling plate with the cooling circuit itself.
- the cooling apparatus further comprises an internal memory for storing the fault history suffered in the operative phase.
- the cooling circuit comprises an internal circuit to the control unit for the remote control of said cooling apparatus by a fixed or portable control device.
- a communication protocol is established between the cooling apparatus and an external device, such as for instance a mobile telecommunication device like a smartphone or a tablet with a dedicated platform and with a control logic governed by the pressure sensors.
- an external device such as for instance a mobile telecommunication device like a smartphone or a tablet with a dedicated platform and with a control logic governed by the pressure sensors.
- the cooling apparatus is installed within a portable casing.
- Said portable casing is provided with a gripping handle and the arrangement of wheels at the support base of the casing itself.
- the portable casing is further equipped with a telescopic handle to ensure easy dragging of the casing.
- reference number 1 globally and schematically indicates a cooling apparatus realized according to the present invention.
- the cooling apparatus 1 essentially comprises a cooling circuit 2 and a cooling plate 3.
- the cooling plate 3 is preferably a disposable element to be placed within a coffin and connected by means of a delivery duct 4 and a return duct 5 to the cooling circuit 2.
- the plate 3 can be made of biodegradable material or it can be made using a metal preform.
- a serpentine 6 of the roll-bond type is placed, which is pre-loaded with the refrigerant fluid and removably connected to the main cooling circuit by means of first and second sealing and fast-coupling connections 7 and 8 located on delivery 4 and return 5 ducts, respectively, of the serpentine 6.
- the cooling circuit 2 is essentially constituted by a compressor 9, which sends a refrigerant fluid in the gaseous state into a condenser 10 by an outlet duct of the compressor 9.
- Said condenser 10 is cooled by a fan 12.
- a duct 13 branches off, through which the refrigerant fluid reaches a collection reservoir 14.
- the refrigerant fluid in the liquid form passes through a duct 15 towards a first two-way solenoid valve 16.
- a duct 19 downstream of the expansion valve/s 18 there is a duct 19, which carries the fluid towards a three-way solenoid valve 20 that is configured, in the operative phase, to make the fluid pass through a first outlet 21 towards the delivery duct 4 of the cooling plate 3.
- the return duct 5 of the cooling plate 3 branches off, which carries the refrigerant fluid towards a second two-way solenoid valve 22, which, open in the operative conditions, carries the fluid towards a duct 23 leading to a heat exchanger 24.
- a control electronic system 33 is provided, which is incorporated and fed within the cooling apparatus 1.
- Said control system 33 incorporates a control unit having inlets that receive electric signals from the various sensors and transducers of the cooling apparatus 1 and control outlets connected to the various actuators of the same apparatus, i.e. to the control solenoid valves.
- Said control system is accessible at the outside through a connector 39 which acts as an external interconnection.
- the compressor 9 is further provided with a service connection 26.
- a first main transducer 27 is connected, which detects the minimum pressure during the whole operation of the cooling apparatus 1.
- a second transducer 28 is further provided on the delivery connection of the compressor, to detect the maximum pressure during the whole operation of the cooling apparatus 1.
- the first and second transducers 27 and 28 allow checking that the compressor 9 always works within a range of pre-established pressures. If the limits imposed are not respected, the control system automatically stops the compressor 9.
- a pressure switch 29 is provided, which is connected on the duct 19 present between the expansion valve 18 and the three-way solenoid valve 20.
- Said pressure switch 29 by detecting whether the pressure within the duct 19 is comprised between maximum and minimum design nominal values, detects whether there is a correct coupling of the cooling plate 3, by means of the first and second sealing and fast-coupling connections 7 and 8.
- a second supplementary branch 30 of the cooling circuit 2 is provided between a second outlet 31 of the three-way valve 20 and the heat exchanger 24.
- the supplementary branch is used for the "liquid recovery phase from the cooling plate".
- a unidirectional valve 32 is located on said supplementary branch 30 .
- a third solenoid valve in order to ensure better insulation from the outside, preventing air from entering the circuit, after having carried out the fluid recovery or in case a defective cooling plate 3 has been used.
- a control electronic system is further present, which incorporates a control unit that controls the configuration of the above-mentioned valves, which the user can interface with, also by means of a fast-coupling connector accessible from the outside.
- the refrigerant fluid initially undergoes a compression through the compressor 9.
- the refrigerant fluid passes, as previously said, into the collection reservoir 14.
- the fluid is directed towards the expansion valve 18.
- the refrigerant fluid undergoes a change in pressure and a partial phase transition, reaching a partially gaseous and partially liquid condition.
- the refrigerant fluid undergoes a new change in state passing from the liquid/gaseous form present at the first sealing and fast-coupling connection 7 of the serpentine 6 to a gaseous form at the second sealing and fast-coupling connection 8.
- the refrigerant fluid is directed to the heat exchanger 24 and, thus, again to the compressor 9.
- Said phase essentially consists in the isolation of the cooling plate 3 from the cooling circuit 2 and from the use of the compressor 9 analogously to a vacuum pump. Within the cooling plate the fluid thus undergoes a depression and returns towards the collection reservoir 14 in the liquid form.
- the hermetic chamber of the compressor empties and takes up a negative pressure.
- solenoid valves 16, 20, 22 and unidirectional valve 32 (or an alternative solenoid valve) is necessary to prevent the backflow of the fluid in the cooling plate 3 after the end of the recovery itself.
- the circuit controls the activation and configuration of the valves as follows.
- the compressor always remains in operation until the internal pressure of the serpentine 6 of the cooling plate 3 reaches a value equal to about - 0.60 bars, anyway a value below zero bar. In this way, a state of partial vacuum is produced.
- the compressor 9 In a second intermediate phase the compressor 9 remains inactive for a predetermined period of time, for instance about 30 seconds.
- the compressor is restarted, while the pressure returns to the value of about -0.60 bars.
- the third phase of the refrigerant liquid recovery lasts in turn for a predetermined period of time, for example for about 40 seconds.
- the cooling apparatus according to the present invention also allows operation for short periods under low pressure conditions and outside the design limits. However, at the end of an operation of this type, a check at the maintenance centers is recommended to ensure that this operation has not affected or damaged the mechanical or electronic components of the cooling apparatus itself.
- the quantity of residual refrigerant fluid present in the cooling plate 3 at the end of the operative phase is totally recovered, with the detachment of the cooling plate 3 from the cooling circuit 2.
- the result is a greatly reduced environmental impact, as well as a positive economic impact due to the recovery of the refrigerant fluid that would otherwise be lost.
- the cooling apparatus 1 allows a simplified periodic maintenance procedure by the operator.
- a further advantage of the invention consists in providing a circuit within a control system 33 for the remote control of the cooling apparatus 1 by an external fixed or portable control device.
- a communication protocol is established between the cooling apparatus 1 and an external device, such as for instance a mobile telecommunication device like a smartphone or a tablet with a dedicated platform and with a control logic governed by the transducers 27 and 28.
- an external device such as for instance a mobile telecommunication device like a smartphone or a tablet with a dedicated platform and with a control logic governed by the transducers 27 and 28.
- the operator is therefore able to monitor and, if necessary, to remote act directly on the operation of the cooling circuit. For example, it is possible to start and stop the operation of the compressor 9.
- the cooling apparatus 1 is installed within a portable casing 34.
- Said portable casing provides a gripping handle 35 and the arrangement of wheels 36 at a supporting base 37 of the casing 34 itself.
- the portable casing is further equipped with a telescopic handle 38 to ensure a simplified dragging of the casing.
- the cooling apparatus is highly handy, thus simplifying the transport by the users, like a trolley.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT102017000062432A IT201700062432A1 (it) | 2017-06-07 | 2017-06-07 | Gruppo frigorifero portatile con recupero di fluido frigorigeno |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3412271A1 true EP3412271A1 (fr) | 2018-12-12 |
EP3412271B1 EP3412271B1 (fr) | 2021-11-03 |
Family
ID=60766032
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18176564.5A Active EP3412271B1 (fr) | 2017-06-07 | 2018-06-07 | Appareil de refroidissement portable à récupération de liquide réfrigérant |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3412271B1 (fr) |
IT (1) | IT201700062432A1 (fr) |
PT (1) | PT3412271T (fr) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2549922A1 (de) * | 1975-11-06 | 1977-05-18 | Nethery Howard J | Geraet zur kryostatischen praeoperativen behandlung von gangraenoesen extremitaeten |
EP0230595A1 (fr) | 1985-12-20 | 1987-08-05 | NUOVA ZORSOL S.r.l. | Appareil de refroidissement pour cerceuils |
EP0631097A1 (fr) | 1993-06-22 | 1994-12-28 | NUOVA ZORSOL S.r.l. | Appareil de refroidissement pour cerceuils avec évaporateur détachable et récuperation de réfrigérant |
US20080229774A1 (en) | 2007-03-22 | 2008-09-25 | Cps Products, Inc. | Device for automatic processing of contaminated refrigerant from an air conditioning system |
US20170115042A1 (en) | 2015-10-27 | 2017-04-27 | Brain Bee Holding S.P.A. | Climate control station for recovery and recharging plants of motorvehicles with incondensible gas control system and method thereof |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN204027419U (zh) * | 2014-07-17 | 2014-12-17 | 贵阳中化开磷化肥有限公司 | 一种便携式设备冷却蛇管清洗机结构 |
-
2017
- 2017-06-07 IT IT102017000062432A patent/IT201700062432A1/it unknown
-
2018
- 2018-06-07 EP EP18176564.5A patent/EP3412271B1/fr active Active
- 2018-06-07 PT PT181765645T patent/PT3412271T/pt unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2549922A1 (de) * | 1975-11-06 | 1977-05-18 | Nethery Howard J | Geraet zur kryostatischen praeoperativen behandlung von gangraenoesen extremitaeten |
EP0230595A1 (fr) | 1985-12-20 | 1987-08-05 | NUOVA ZORSOL S.r.l. | Appareil de refroidissement pour cerceuils |
EP0631097A1 (fr) | 1993-06-22 | 1994-12-28 | NUOVA ZORSOL S.r.l. | Appareil de refroidissement pour cerceuils avec évaporateur détachable et récuperation de réfrigérant |
US20080229774A1 (en) | 2007-03-22 | 2008-09-25 | Cps Products, Inc. | Device for automatic processing of contaminated refrigerant from an air conditioning system |
US20170115042A1 (en) | 2015-10-27 | 2017-04-27 | Brain Bee Holding S.P.A. | Climate control station for recovery and recharging plants of motorvehicles with incondensible gas control system and method thereof |
Also Published As
Publication number | Publication date |
---|---|
EP3412271B1 (fr) | 2021-11-03 |
PT3412271T (pt) | 2022-02-03 |
IT201700062432A1 (it) | 2018-12-07 |
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