CN1922455A - Cooling unit for a drinking water fountain, and water fountain containing such a unit - Google Patents

Cooling unit for a drinking water fountain, and water fountain containing such a unit Download PDF

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Publication number
CN1922455A
CN1922455A CNA2005800058162A CN200580005816A CN1922455A CN 1922455 A CN1922455 A CN 1922455A CN A2005800058162 A CNA2005800058162 A CN A2005800058162A CN 200580005816 A CN200580005816 A CN 200580005816A CN 1922455 A CN1922455 A CN 1922455A
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CN
China
Prior art keywords
chamber
cooling unit
heat
sub
exchange fluid
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Pending
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CNA2005800058162A
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Chinese (zh)
Inventor
E·迪奇
E·富尼耶
A·佩雷拉
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Dieau SA
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Dieau SA
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Publication of CN1922455A publication Critical patent/CN1922455A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D31/00Other cooling or freezing apparatus
    • F25D31/002Liquid coolers, e.g. beverage cooler

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Devices For Dispensing Beverages (AREA)

Abstract

A self-contained cooling unit (1) for drinking water fountains, wherein the cooling unit comprises - an outer casing (2) forming a fluidtight chamber ; a thermal exchange fluid held within the chamber; - a source of cold energy (18) transferable to the thermal exchange fluid ; - at least one drinking water conduit (11) arranged within the chamber and having a drinking water inlet (9) and a drinking water outlet (10) outside of said chamber.

Description

The water dispenser that is used for the cooling unit of water dispenser and comprises a kind of like this unit
Technical field
The present invention relates to the water dispenser that is used for the cooling unit of water dispenser and comprises a kind of like this unit.
Background technology
Water dispenser is common general knowledge in the prior art, and many systems have been sold for a long time.Most of water dispensers can be classified into a kind of in following two types: mains water water dispenser or bottled water dispenser.Current most of water dispensers of making have cooling unit, and this cooling unit was cooled the water in the water dispenser before distributing, and also may have heating unit, so that provide warm or moderate drinking water to the user.Cooling unit on most of water dispensers comprises the heat-exchange system with evaporator coil, this evaporator coil heat of cooling exchanging liquid, and this then chilled heat exchanger fluid is around the knockout coil pumping, and water to be cooled passes this knockout coil circulation.When than the hot drink water when comprising the coil pipe of heat exchanger fluid, heat energy is delivered to heat exchanger fluid by conduction from drinking water, and drinking water is turned cold.
Most of cooling units in water dispenser when the front construction more complicated, and this makes them be not easy to safeguard or cleaning.In addition, every kind of water dispenser generally is designed to, and a kind of cooling unit is used from the another kind of cooling unit of different manufacturers and replaced very difficulty, and this makes that also maintenance is more expensive, and depends primarily on the initial manufacturer of water dispenser.
Summary of the invention
The applicant has been found that the independently cooling unit by design in such a way is provided overcomes these problems, and promptly it was both safeguarded easily, cleans, and can be installed in the water dispenser of other manufacturer again.Therefore a kind of so independently cooling unit has been opened up the gamut of water dispenser, and this water dispenser may wear out or need repairing, and can easily convert to independent cooling unit of the present invention and work.
Thereby, an object of the present invention is a kind of independently cooling unit that is used for water dispenser, wherein cooling unit comprises:
The shell of-formation fluid impermeable chamber;
-remain on the heat-exchange fluid in the chamber;
-can be delivered to the source of the cold energy of heat-exchange fluid;
-be arranged at least one drinking water conduit in the chamber, and described drinking water conduit has drinking water import and drinking water outlet outside described chamber.
In a preferred embodiment of the invention, keep the fluid impermeable chamber of heat-exchange fluid to be divided into two sub-chamber, inner sub-chamber is comprised in the outside sub-chamber.In a further advantageous embodiment, outside sub-chamber is substantially around the upper zone of inner sub-chamber, more preferably around the top 1/3rd of inner sub-chamber, most preferably around the top of inner sub-chamber half.The applicant is surprised to find, the advantage of this specific embodiment is: if the drinking water conduit is arranged in top, the outside sub-chamber around inner, lower sub chamber, might reduce so to obtain and the necessary tube material amount of traditional identical cooling effect that obtains with much longer water conduit (uniform temp that is water descends), this has direct influence for manufacturing cost again, because use less tube material.In such an embodiment, the base plate of outside sub-chamber thereby the height that most preferably is positioned at inside, lower sub chamber be half place approximately.This design therefore not only energy efficient, make economical, and mechanically robust, this is because long inside sub-chamber highly locates at the middle part to be strengthened by the base plate of outside sub-chamber.Be understood that easily that by above top, outside sub-chamber and inside, lower sub chamber substantial axial are aimed at, and are similar to arranged in concentric circles.But possiblely be, and even in preferred some example, the vertical axis of inside, lower sub chamber moves horizontally with respect to the vertical axis of top, outside sub-chamber, thereby the axis keeping parallelism, and inner, lower sub chamber still remains in the diameter of top, outside sub-chamber.Another advantage of the layout of sub-chamber described above according to a preferred embodiment of the invention is, independently cooling unit is very compact, and even can make and be coupled in the smaller size smaller, as be presented in the cooled water distributor, this cooled water distributor uses bag system to be used for storing drinking water during cooling down operation temporarily.Such bag system is for example from learning at the EP 0 581 492 under one's name of EBAC Co., Ltd.Problem about these bags is that they are owing to potential bacterium accumulation, obstruction of minor diameter service pipe or the like must be changed continually.At present, these bags abandon and simply with new replacing, but this process not only loses time, and quite complicated and loaded down with trivial details, even also be like this for experienced attendant.Yet, by means of integrated cooling unit according to the present invention, eliminated these problems, because integrated cooling unit can use in the long period section, and do not need to safeguard, perhaps needn't require to change bag very bothersomely.Really, sealed basically outside duct inlet and the outlet because the unit dewaters, this water conduit import and outlet are connected respectively on drinking water source and the dispensing nozzle, so prevent from basically to be subjected to outside bacterial infection with the heat-exchange fluid of unit.
In another preferred embodiment, heat-exchange fluid is provided with at least one runner in chamber, is used for flowing of in chamber heat-exchange fluid.Even more preferably, at least one runner allows heat-exchange fluid to flow to inner sub-chamber from outside sub-chamber, and vice versa.
Preferably, at least one drinking water conduit is arranged in the outside sub-chamber of chamber.Perhaps, and in a further advantageous embodiment, at least one drinking water conduit is arranged in the inside sub-chamber of chamber.Under any situation, the drinking water conduit preferably is arranged in the chamber as coil pipe.The drinking water conduit is preferably by easily energy being made by the material that conduction is delivered to its content (i.e. the drinking water that wherein circulates).Such material generally is made of metal, as copper, although the preferable alloy that stainless steel is to use.Use a concrete advantage of the metal such as stainless steel to be for the water conduit material, might be by applying electric current for conduit and sterilizing to system.In addition, water conduit preferably has regular corrugated cross-section, in other words, conduit is undulatory, this is increased in the surface of heat-exchange fluid, conduit significantly and is included in energy transfer efficiency between wherein the water, also allow the use of much smaller conduit mode cross section thus and in any given system the so shorter length of conduit because can obtain identical equivalent energy transmission by means of less material.
In a preferred embodiment, the source that can be delivered to the cold energy of heat-exchange fluid is positioned on the outer wall of chamber, and most preferably, the source that can be delivered to the cold energy of heat-exchange fluid is positioned on the outer wall of inner sub-chamber.In a further advantageous embodiment, the source that can be delivered to the cold energy of heat-exchange fluid is positioned at the inside sub-chamber of chamber, and particularly preferred a selection among the embodiment, the source that can be delivered to the described cold energy of heat-exchange fluid is positioned at the external cavity that the wall by inner sub-chamber forms.
The source that can be used on the cold energy in the cooling unit of the present invention is multiple with various.In a preferred embodiment, the source that can be delivered to the cold energy of heat-exchange fluid is Peltier (Peltier) plate.In another preferred but different embodiment, the source of cold energy is medium cooler (dielectric cooler).In another preferred embodiment, the source of cold energy is the evaporator coil that is placed in the inside sub-chamber of chamber.
In a particularly preferred embodiment, heat-barrier material is provided on the side of chamber, between the outer wall of the source of the cold energy on the outer wall and chamber.This prevents that chamber side from becoming too cold, and avoids heat-exchange fluid to change to the problem of solid phase from liquid phase thus.
In another preferred embodiment, independently cooling unit also comprises the temperature sensor that is positioned at chamber.Sensor is chosen to, but its monitor temperature and send corresponding signal increasing or to reduce cold generation not only, and the phase transformation of detectable heat-exchange fluid and send proper signal to control this phase transformation.
With regard to heat-exchange fluid, those skilled in the art is known a lot, and needn't mention here.For purpose of the present invention, water is preferred heat-exchange fluid because it forms the ability of icing in chamber, this chamber produce in addition colder than heat-exchange fluid.
Description of drawings
Fig. 1 is first preferred according to independently cooling unit of the present invention, as to be used for water dispenser
The viewgraph of cross-section of embodiment.
Fig. 2 is second preferred according to independently cooling unit of the present invention, as to be used for water dispenser
The viewgraph of cross-section of embodiment.
Fig. 3 is the viewgraph of cross-section of preferred embodiment of the device of a kind of Fig. 2 of being similar to.
Fig. 4 is the viewgraph of cross-section of another preferred embodiment of device of the present invention.
Fig. 5 is the viewgraph of cross-section of another preferred embodiment of device of the present invention.
The specific embodiment
The following description of connection with figures only is exemplary, and is used for illustrating most preferred embodiment of the present invention some.
Fig. 1 is the viewgraph of cross-section of expression according to a kind of independently cooling unit of first preferred embodiment.This unit is totally indicated by Reference numeral 1, and comprises shell 2, and this shell 2 forms fluid impermeable chambers, has top cover 3 and bottom 8.Chamber is subdivided into two sub-chamber, outside sub-chamber 5 and the inside sub-chamber 7 that is positioned at outside sub-chamber 5.Outside and inner sub-chamber 5 and 7 is limited by outer wall 4 and inwall 6 respectively, corresponding at outer wall 4 whereby with space and outside sub-chamber 5 between the inwall 6, and the circumference of inwall 6 is continuous and is circular substantially, is the space of inner sub-chamber 7 inner qualification of circumference thus.
The independently cooling unit of this embodiment also comprises drinking water conduit 11, and this drinking water conduit 11 is with coiled tube arrangements externally in the sub-chamber 5, and has and be connected on the drinking water conduit but be positioned at outer drinking water import 9 of chamber and drinking water outlet 10.The unit also is equipped with temperature sensor 12, and this temperature sensor 12 reaches downwards the inner sub-chamber 7 from top cover 3.The major part that temperature sensor 12 removes its length of terminal outer is coated with heat insulation encapsulating material 13.Sensor not only can be surveyed fluid temperature (F.T.), and can check the existence of the phase transformation in the inner sub-chamber.Outside sub-chamber 5 and inner sub-chamber all are filled with same heat-exchange fluid, for example the water (not shown).Heat-exchange fluid can flow to the next one from a sub-chamber through at least one runner in chamber 5,7.Be used as heat-exchange fluid and remain on the interior water of chamber through being arranged in the pump 14 on unit one side, circulate between inside and outside sub-chamber 5,7, this pump sub-chamber 7 internally extracts heat-exchange fluids, and passes through passage 16 in its pumped back exterior chamber 5.By this way, make heat-exchange fluid walk around and cross the side flow of water conduit 11 along outside sub-chamber 5, and cross then inwall 6 the top and from the top of unit to falling into inner sub-chamber 7.Pump 15 adjacency channels 17 provide, so that heat-exchange fluid can forever or provisionally pump out, and then in passage 17 pumped back chambers.
The source that inner sub-chamber 7 holds the cold energy that can be delivered to heat-exchange fluid.In currently preferred embodiment, the source of cold energy is evaporimeter loop 18, this evaporimeter loop 18 remains in the inner sub-chamber, thereby cold energy is distributed in the heat-exchange fluid, be distributed in the water in this case, and this then water is sent inner sub-chamber 7 around cavity pump, and enters in the outside sub-chamber 5, as explained above.When evaporator feedwater was filled cold energy, ice crystal often was formed in the inner sub-chamber 7, so and this add cooling effect to the water of heat-exchange fluid.Therefore, when the unit was in the operation, 11 circulations of drinking water conduit are crossed and walked around to the heat-exchange fluid of refrigeration, causes the refrigeration and the cooling of the drinking water in conduit 11.After having entered in the system by import 9 under refrigeration condition not, drinking water will leave through exporting 10, and in this process by refrigeration.
Forward Fig. 2 now to, in this preferred embodiment of cooling unit independently, given identical Reference numeral with components identical among the embodiment that before with respect to Fig. 1, describes.The unit still comprises chamber, and this chamber has two sub-chamber that limited by outer wall 4 and inwall 6, an outside sub-chamber 5 and an inner sub-chamber 7.Yet current, drinking water conduit 11 with screw arrangement in inner sub-chamber 7.Outer wall 4 receives the heat insulating coat 21 of silicon rubber for example or polystyrene, and this heat insulating coat 21 is appending on the outer front of outer wall 4 on the side of unit.Evaporator coil 19 extends around the whole periphery of outer wall 4, and do not having on the side of heat insulating coat 21, evaporator coil 19 contact outer walls 4 to be being delivered to outside sub-chamber 5 to its cold energy through conduction, and are delivered in the chamber 5 that comprises heat-exchange fluid through conduction by outer wall 4 then.In operation, the cold energy of being transmitted by conduction makes heat-exchange fluid covert and become solid, and promptly water is under the situation of heat-exchange fluid therein, forms ice cube 20.Ice cube 20 further gives the remainder of heat-exchange fluid cooling effect.This fluid all exists in two sub-chamber, and by means of the passage 22 that is directed to the pump 24 that rotor 25 is housed, circulation between inner sub-chamber 7 and outside sub-chamber 5.The rotor 25 of pump 24 is discharged to the outlet 23 of the bottom of the heat-exchange fluid of refrigeration through being arranged in outside sub-chamber 5 in the bottom of outside sub-chamber 5.By this way, the heat-exchange fluid of refrigeration flows into the top of inner sub-chamber 7 from the top of outside sub-chamber 5, and crosses drinking water conduit 11 downwards, cools off drinking water thus.In addition, inner sub-chamber 7 can cooperate with outlet 26, if be necessary for cleaning and maintenance for example, then this makes the cooling unit can the emptying heat-exchange fluid, and, also provide a kind of convenient manner that can draw back described heat-exchange fluid once more chamber in case finish these operations.This can be for example by providing bin to realize, heat-exchange fluid uses separate pump to be pumped in this bin through exporting 26, and wherein bin can be arranged in cooling unit top another part at water dispenser.
The preferred embodiment of Fig. 3 is similar to the embodiment of Fig. 2, and the identical place of the element in the unit has kept Reference numeral.Main difference between the embodiment of the embodiment of Fig. 3 and Fig. 2 is, the independently cooling unit of Fig. 3 has been designed to be engaged in the much smaller useful volume, and as finding in some water dispenser, this water dispenser uses bag system to come dispensing water.In this case, cooling unit need be according to the correspondingly-sized of bag and sizing is promptly narrower and longer.Therefore, the coil pipe of drinking water conduit has made tightr, so that be coupled in the smaller size smaller, and still provides enough surface contacts for heat-exchange fluid, this heat-exchange fluid externally partly is frozen into ice in the sub-chamber 5, with contact drinking water conduit and the suitable cooling of assurance.
The preferred embodiment of Fig. 4 represents to arrange independently another mode of cooling unit.That describes before this unit class is similar in respect to the description of Fig. 1 is the sort of.Unique difference here is:
-the source that can be delivered to the cold energy of heat-exchange fluid is included in the evaporimeter 27 in the ceramic case.Such ceramic case evaporimeter itself it is known to those skilled in the art that, and do not require here and further describe;
-ceramic case evaporimeter 27 is inserted in the external cavity 30 that the wall 29 by inner sub-chamber 7 forms in the sealed engagement mode.
As can be seen, this layout also makes, if necessary, then easily changes and change ceramic case evaporimeter 27.The shape of the external cavity 30 that is formed by the wall 29 of inner sub-chamber 7 is corresponding with the peripheral shape of ceramic case evaporimeter 27 substantially, thereby the latter causes the resilient clamp and the engages and seals of between to the introducing among the former.Selectively, the ceramic case evaporimeter can be replaced by the Peltier plate that is inserted in the external cavity.To discuss the Peltier plate in more detail with respect to Fig. 5 below.
In another implementation column, as showing among Fig. 5, identical elementary cell is modified, and is Peltier plate 31 because can be delivered to the source of the cold energy of heat-exchange fluid.These it is known to those skilled in the art that, and needn't further describe.Peltier plate 31 is fixing or append on the outside of wall 6 of inner sub-chamber 7, and preferably to bottom 8, and temperature sensor 12 extends downwards from the top 3 of chamber, thereby the terminal cardinal principle of sensor is aimed at the middle part of Peltier plate 31.By this way, temperature sensor can be controlled the degree of the cold energy of generation more accurately, and any ice that forms in chamber.
Above example is the representative of some preferred embodiment of the present invention, does not plan to limit the spirit or scope of the present invention.

Claims (22)

1. independently cooling unit that is used for water dispenser, wherein cooling unit comprises:
The shell of-formation fluid impermeable chamber;
-remain on the heat-exchange fluid in the chamber;
-can be delivered to the source of the cold energy of heat-exchange fluid;
-be arranged at least one drinking water conduit in the chamber, and described drinking water conduit has drinking water import and drinking water outlet outside described chamber.
2. independently cooling unit according to claim 1 wherein, keeps the fluid impermeable chamber of heat-exchange fluid to be divided into two sub-chamber, and inner sub-chamber is included in the outside sub-chamber.
3. independently cooling unit according to claim 1 and 2, wherein, described outside sub-chamber centers on the upper area of described inner sub-chamber substantially.
4. independently cooling unit according to claim 3, wherein, outside sub-chamber is around the top 1/3rd of inner sub-chamber.
5. independently cooling unit according to claim 3, wherein, outside sub-chamber around the top of inner sub-chamber half.
6. according to each described independently cooling unit among the above claim 1-5, wherein, heat-exchange fluid is provided with at least one runner in chamber, is used for flowing of in chamber heat-exchange fluid.
7. independently cooling unit according to claim 6, wherein, described at least one runner allows heat-exchange fluid to flow to inner sub-chamber from outside sub-chamber, and vice versa.
8. according to each described independently cooling unit of above claim, wherein, described at least one drinking water conduit is arranged in the outside sub-chamber of chamber.
9. according to each described independently cooling unit of above claim, wherein, described at least one drinking water conduit is arranged in the inside sub-chamber of chamber.
10. according to each described independently cooling unit of above claim, wherein, the source that can be delivered to the cold energy of heat-exchange fluid is positioned on the outer wall of chamber.
11. independently cooling unit according to claim 10, wherein, the source that can be delivered to the cold energy of heat-exchange fluid is positioned on the outer wall of inner sub-chamber.
12. according to each described independently cooling unit of above claim, wherein, the source that can be delivered to the cold energy of heat-exchange fluid is positioned at the inside sub-chamber of chamber.
13. according to each described independently cooling unit of above claim, wherein, the source that can be delivered to the cold energy of heat-exchange fluid is positioned at the external cavity that the wall by inner sub-chamber forms.
14. independently cooling unit according to claim 1, wherein, the source that can be delivered to the cold energy of heat-exchange fluid is the Peltier plate.
15. independently cooling unit according to claim 1, wherein, the source that can be delivered to the cold energy of heat-exchange fluid is the medium cooler.
16. independently cooling unit according to claim 1, wherein, the source that can be delivered to the cold energy of heat-exchange fluid is the evaporator coil that is placed in the inside sub-chamber of chamber.
17. independently cooling unit according to claim 1, wherein, heat-barrier material is provided on the side of chamber, between the outer wall of the source of the cold energy on the outer wall and chamber.
18. independently cooling unit according to claim 1 also comprises the temperature sensor that is positioned at chamber.
19. independently cooling unit according to claim 1, wherein, heat-exchange fluid is a water.
20. independently cooling unit according to claim 1, wherein, described at least one drinking water conduit with coiled tube arrangements in chamber.
21. independently cooling unit according to claim 1, wherein, described at least one drinking water conduit has regular corrugated cross-section.
22. according to each described independently cooling unit of above claim, wherein, described at least one drinking water conduit with coiled tube arrangements in the top of the first half of inner, lower sub chamber, outside sub-chamber.
CNA2005800058162A 2004-02-24 2005-02-24 Cooling unit for a drinking water fountain, and water fountain containing such a unit Pending CN1922455A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP04290497.9 2004-02-24
EP04290497A EP1574798A1 (en) 2004-02-24 2004-02-24 Cooling unit for a drinking water fountain, and water fountain containing such a unit

Publications (1)

Publication Number Publication Date
CN1922455A true CN1922455A (en) 2007-02-28

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CNA2005800058162A Pending CN1922455A (en) 2004-02-24 2005-02-24 Cooling unit for a drinking water fountain, and water fountain containing such a unit

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US (1) US20090090119A1 (en)
EP (2) EP1574798A1 (en)
JP (1) JP2007523317A (en)
CN (1) CN1922455A (en)
CA (1) CA2557182A1 (en)
RU (1) RU2006133915A (en)
WO (1) WO2005085726A1 (en)

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US20090090119A1 (en) 2009-04-09
EP1738121A1 (en) 2007-01-03
EP1574798A1 (en) 2005-09-14
JP2007523317A (en) 2007-08-16
RU2006133915A (en) 2008-03-27
WO2005085726A1 (en) 2005-09-15
CA2557182A1 (en) 2005-09-15

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