WO1996012920A1 - Ecological thermoelectric refrigerating system - Google Patents

Ecological thermoelectric refrigerating system Download PDF

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Publication number
WO1996012920A1
WO1996012920A1 PCT/ES1995/000099 ES9500099W WO9612920A1 WO 1996012920 A1 WO1996012920 A1 WO 1996012920A1 ES 9500099 W ES9500099 W ES 9500099W WO 9612920 A1 WO9612920 A1 WO 9612920A1
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WIPO (PCT)
Prior art keywords
page
cold
thermoelectric
heat
lines
Prior art date
Application number
PCT/ES1995/000099
Other languages
Spanish (es)
French (fr)
Inventor
Luis Salvador Acosta Malia
Francisco Javier Acosta Malia
Original Assignee
Luis Salvador Acosta Malia
Francisco Javier Acosta Malia
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Publication date
Application filed by Luis Salvador Acosta Malia, Francisco Javier Acosta Malia filed Critical Luis Salvador Acosta Malia
Priority to AU31673/95A priority Critical patent/AU3167395A/en
Priority to MX9602404A priority patent/MX9602404A/en
Priority to DE69500158T priority patent/DE69500158D1/en
Priority to JP8513657A priority patent/JPH09507566A/en
Priority to EP95927743A priority patent/EP0719993B1/en
Publication of WO1996012920A1 publication Critical patent/WO1996012920A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B21/00—Machines, plants or systems, using electric or magnetic effects
    • F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
    • 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
    • F25B2321/00—Details of machines, plants or systems, using electric or magnetic effects
    • F25B2321/02—Details of machines, plants or systems, using electric or magnetic effects using Peltier effects; using Nernst-Ettinghausen effects
    • F25B2321/023—Mounting details thereof

Definitions

  • the system developed consists of the integration of a totally ecological refrigeration module, based on the use of semiconductor elements existing in the market.To do this, it has been necessary to develop a heat transmission system that optimizes the power generated, achieving yields so far unknown in the field of cold without gases (Ecological cold).
  • the module consists of a Thermoelectric plate, of those existing in the market, to which we place a metallic supplement, preferably of aluminum, on the face that we will use as a cold generator; and two heatsinks, one on the heat generating face and the other on the free car of the metallic supplement.
  • Another critical point of the system is the design of the heatsinks and, in particular, that of the heat generating face.
  • the one used in our module is our own, having started from a commercial heatsink. I modified them. carried out therein have focused on reducing, as far as possible, the thermal resistance (heatsink-environment) for operation in forced convection. For This was subjected to mechanization, reducing its base to 4 mm and the width of its fins to 2 mm, leaving them completely straight.
  • a heatsink with a thermal resistance of 0.05 "C / w operating with an axial fan that drives the air in the front direction towards the heatsink.
  • the air flow as we have said, must be in the frontal direction with in order to achieve maximum turbulence, using low profile commercial fans.
  • FIG 1 a prototype has been developed, which is represented in figure 1, which consisted of a liquid tank (for example, water) to which six modules in two groups of units have been attached on opposite sides. three, leaving the heatsinks of the cold-generating faces (l) inside the tank.
  • the heatsinks of the heat-generating faces (2) remain outside, operating in forced convection with the help of axial profile fans low (3).
  • Two of these fans are used for each group of three modules, mentioned above, the air flow being directed in the front direction to the fans by means of small nozzles.
  • the mechanical rigidity of each module is achieved by joining the two heatsinks as shown in Figure 2. It shows the piece of insulating material (1) and the metal studs (2), embedded in said piece and without entering in contact, avoiding thermal bridges.
  • the power supply to the modules is carried out by means of a DC power supply of those existing in the market.
  • a source d 'own manufactured power supply could be integrated into the set.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

Ecological thermoelectric refrigerating system comprised of a thermoelectric plate by coupling to the latter a supplementary metal plate on the cold generating face (1) and two dissipators, one dissipator being arranged on the supplementary metal element and the other dissipator being refrigerated by natural or forced convection to the heat generating face (2). In order to avoid the thermal bridge between both faces and in order to provide mechanical rigidity to the assembly an isolating material is mounted between the two dissipators.

Description

DESCRIPCIÓNDESCRIPTION
SISTEMA REFRIGERADOR TERMOELÉCTRICO ECOLÓGICOECOLOGICAL THERMOELECTRIC REFRIGERATOR SYSTEM
El sistema desarrollado consiste en la integración de un módulo refrigerador totalmente ecológico, basado en el aprovechamiento de elementos semiconductores existentes en el mercado.Para ello, se ha tenido que desarrollar ur sistema de transmisión de calor que optimice la potencia generada, consiguiendo rendimientos hasta ahora desconocidos en el campo del frió sin gases (frío Ecológico).The system developed consists of the integration of a totally ecological refrigeration module, based on the use of semiconductor elements existing in the market.To do this, it has been necessary to develop a heat transmission system that optimizes the power generated, achieving yields so far unknown in the field of cold without gases (Ecological cold).
El módulo consiste en una placa Termoeléctrica, de las existentes en el mercado, a la que colocamos un suplemento metálico, preferentemente de aluminio,en la cara que utilizaremos como generadora de frío; y dos disipadores, uno en la cara generadora de calor y el otro en la car* libre del suplemento metálico.The module consists of a Thermoelectric plate, of those existing in the market, to which we place a metallic supplement, preferably of aluminum, on the face that we will use as a cold generator; and two heatsinks, one on the heat generating face and the other on the free car of the metallic supplement.
Es muy importante la perfección conseguida en el contacto de las superficies en juego (placa-suplemento; placa- disipador 1; cara libre del suplemento-disipador 2). Par. ello es conveniente la utilización de alguna sustancia altamente conductora que asegure la calidad del contacto (por ejemplo, silicona de alta conductividad o sulfato de Cobre), evitando, de esta forma, la aparición de resistencias térmicas perjudiciales.It is very important the perfection achieved in the contact of the surfaces in play (plate-supplement; plate-dissipator 1; free face of the supplement-dissipator 2). Pair. It is convenient to use some highly conductive substance that ensures contact quality (for example, high conductivity silicone or Copper sulfate), thus avoiding the appearance of harmful thermal resistance.
Otro punto critico del sistema es el diseño de los disipadores y, en particular, el de la cara generadora de calor. El utilizado en nuestro módulo es propio, habiéndose partido de un disipador comercial. Las modificacione. realizadas en él han ido enfocadas a disminuir, en la medida de lo posible, la Resistencia térmica (disipador- ambiente) para funcionamiento en convección forzada. Para ello se le sometió a mecanización, disminuyendo a 4 mm su base y a 2 mm el ancho de sus aletas, dejando estas completamente rectas. Como resultado obtenemos un disipador de una resistencia térmica de 0,05 "C/w, funcionando con un ventilador axial que impulsa el aire en sentido frontaJ hacia el disipador. La impulsión del aire, como y hemos comentado, debe ser en sentido frontal con objeto de conseguir la máxima turbulencia, utilizando ventiladores comerciales de bajo perfil.Another critical point of the system is the design of the heatsinks and, in particular, that of the heat generating face. The one used in our module is our own, having started from a commercial heatsink. I modified them. carried out therein have focused on reducing, as far as possible, the thermal resistance (heatsink-environment) for operation in forced convection. For This was subjected to mechanization, reducing its base to 4 mm and the width of its fins to 2 mm, leaving them completely straight. As a result, we obtain a heatsink with a thermal resistance of 0.05 "C / w, operating with an axial fan that drives the air in the front direction towards the heatsink. The air flow, as we have said, must be in the frontal direction with in order to achieve maximum turbulence, using low profile commercial fans.
Es necesario algún tipo de sujección para conseguir la rigidez mecánica del módulo. Esta debe conseguirse sin provocar ningún puente térmico entre la cara generadora de frío y la de calor. Tengase en cuenta que de producirse esta anomalía (por ejemplo mediante tornillería metálica] las pérdidas que tienen lugar son de gran magnitud (aproximadamente el 32 %). Para ello se tiene que utilizar tornillería de material aislante térmicamente o una placa intermedia de material aislante a la que van atornillados espárragos metálicos provenientes de cada disipador df manera alternativa. La segunda solución es la que utilizamos.Some type of support is necessary to achieve the mechanical rigidity of the module. This must be achieved without causing any thermal bridge between the cold and heat generating face. Bear in mind that if this anomaly occurs (for example by means of metal screws) the losses that take place are of great magnitude (approximately 32%) .To do this, it is necessary to use thermally insulating material screws or an intermediate plate of insulating material to which are bolted metal studs coming from each heatsink df alternative way.The second solution is the one we use.
Como ejemplo de aplicación del sistema se ha desarrollado un prototipo,que se representa en la figura 1, que consistí en una cuba de líquido (por ejemplo, agua) a la que se ha adosado , en lados opuestos, seis módulos en dos grupos de tres, dejando en el interior de la cuba los disipadores de las caras generadoras de frió (l).Los disipadores de las caras generadoras de calor (2),quedan en el exterior, funcionando en convección forzada con la ayuda de ventiladores axiales de perfil bajo (3).Se utilizan dos de estos ventiladores para cada grupo de tres módulos, mencionados anteriormente, conduciéndose el flujo de aire en dirección frontal a los ventiladores mediante unas pequeñas toberas. La rigidez mecánica de cada módulo se consigue mediante la unión de los dos disipadores según se representa en la figura 2. En ella se observa la pieza de material aislante (1) y los espárragos metálicos (2), embutidos en dicha pieza y sin entrar en contacto, evitando puentes térmicos.As an example of the application of the system, a prototype has been developed, which is represented in figure 1, which consisted of a liquid tank (for example, water) to which six modules in two groups of units have been attached on opposite sides. three, leaving the heatsinks of the cold-generating faces (l) inside the tank. The heatsinks of the heat-generating faces (2), remain outside, operating in forced convection with the help of axial profile fans low (3). Two of these fans are used for each group of three modules, mentioned above, the air flow being directed in the front direction to the fans by means of small nozzles. The mechanical rigidity of each module is achieved by joining the two heatsinks as shown in Figure 2. It shows the piece of insulating material (1) and the metal studs (2), embedded in said piece and without entering in contact, avoiding thermal bridges.
La alimentación de energía eléctrica a los módulos se realiza mediante una fuente de alimentación de corriente continua de las existentes en el mercado. En el modelo definitivo, se podría integrar en el conjunto una fuente d« alimentación de fabricación propia.The power supply to the modules is carried out by means of a DC power supply of those existing in the market. In the final model, a source d 'own manufactured power supply could be integrated into the set.
En el prototipo los módulos están dotados de placas de 60w, consiguiéndose, con un ambiente de 30aC,las siguientes temperaturas:In the prototype the modules are equipped with 60w plates, achieving, with an environment of 30 to C, the following temperatures:
Temperatura cara fría = -10 "C Temperatura cara caliente» 33 *C Temperatura del agua= - 2 *CCold face temperature = -10 "C Hot face temperature» 33 * C Water temperature = - 2 * C
Introduciendo en este equipo un serpentín de un dispensador de bebidas ( por ejemplo, cervezas o refrescos), se consigue la refrigeración adecuada del líquido.By introducing into this equipment a coil of a beverage dispenser (for example, beers or soft drinks), adequate cooling of the liquid is achieved.
Entre las ventajas del sistema se pueden enumerar:Among the advantages of the system can be listed:
- Refrigeración sin utilizar gas refrigerante.- Refrigeration without using refrigerant gas.
- Ausencia de elementos móviles (solo ventiladores)- Absence of moving elements (fans only)
- Alto rendimiento. - Alimentación a baja tensión.- High performance. - Low voltage power.
- Simplicidad del sistema, dado que es muy compacto.- Simplicity of the system, since it is very compact.
- Flexibilidad, se adapta fácilmente. - Flexibility, adapts easily.

Claims

REIVINDICACIONES
Se reivindica, como de nueva y propia invención, l propiedad y explotación exclusiva de:The ownership and exclusive exploitation of:
1).- SISTEMA REFRIGERADOR TERMOELÉCTRICO ECOLÓGICO, caracterizado por el aprovechamiento del frió generado por uní placa termoeléctrica mediante el acoplamiento a la misma de u suplemento metálico en la cara generadora de f io y do disipadores de diseño especial, uno en la cara libre de suplemento metálico y,el otro, en la cara generadora de calor, refrigerado por convección natural o forzada.1) .- ECOLOGICAL THERMOELECTRIC REFRIGERATOR SYSTEM, characterized by the use of the cold generated by a thermoelectric plate by means of the coupling of a metallic supplement on the cold generating face and of special design heatsinks, one on the free face of metallic supplement and, the other, on the heat generating face, cooled by natural or forced convection.
2).- Un sistema según la reivindicación 1, caracterizad porgue el aislamiento térmico de las dos caras y , por tanto, l optización del sistema, se consigue por la diferente sujecció de los dos disipadores con la intermediación de un material aislante, consiguiendo, de esta forma la ruptura del puent€ térmico entre ambas caras y, a la vez, la rigidez mecánica.2) .- A system according to claim 1, characterized in that the thermal insulation of the two faces and, therefore, the optimization of the system, is achieved by the different fastening of the two heatsinks with the intermediation of an insulating material, achieving, in this way the rupture of the thermal bridge between both faces and, at the same time, the mechanical rigidity.
3).- Un sistema según las reivindicaciones 1 y 2, que montado en distintas caras de una cuba de líquido, pueda utilizarse en la refrigeración de un serpentín de un dispensador de líquido.3) A system according to claims 1 and 2, which mounted on different faces of a liquid tank, can be used in cooling a coil of a liquid dispenser.
4).- Un sistema según las reivindicaciones 1 y posteriores,que pueda ser utilizado para la refrigeración o calentamiento de cualquier material (sólidos, líquidos o gases). 4) .- A system according to claims 1 and later, which can be used for cooling or heating any material (solids, liquids or gases).
REIVINDICACIONES MODIFICADASMODIFIED CLAIMS
[recibidas por la Oficina Internacional el 25 de enero 1996 (25.01.96) ; reivindicaciones 1 -4 reemplazadas por las reivindicaciones 1-5 modificadas (1 pagina)[received by the International Bureau on January 25, 1996 (25.01.96); claims 1 -4 replaced by modified claims 1-5 (1 page)
1a.- Sistema refrigerador termoeléctrico ecológico, de los que aprovechan el frío generado por una placa termoeléctrica, mediante al acoplamiento a la misma de un suplemento metálico en la cara generadora de frió y dos disipadores, respectivamente, en la cara libre de este suplemento metálico y en la cara generadora de calor, de los refrigerados bien por convección natural o bien forzada, esencialmente caracterizado por incrementar tanto la rigidez mecánica como el aislamiento térmico de las dos caras y la ruptura del puente térmico, mediante la diferente sujeción de los dos disipadores, en disposición no coaxial de sus medios de apriete.1 .- refrigerator system ecological thermoelectric, of those who use the cold generated by a thermoelectric plate by a coupling to the same of a metal supplement in generating face cold and two dissipators, respectively, on the free side of this supplement metallic and on the heat generating face, of those cooled either by natural or forced convection, essentially characterized by increasing both the mechanical stiffness and the thermal insulation of the two faces and the rupture of the thermal bridge, by means of the different clamping of the two heatsinks, in non-coaxial arrangement of its tightening means.
2a.- Sistema refrigerador termoeléctrico ecológico, según la reivindicación anterior, caracterizado porque se asegura la rigidez mecánica general con los medios de apriete o espárragos (2) que se incorporan roscados o, alternativamente, embutidos en la placa o pieza intermedia (1 ), de material aislante térmico, rodeando a la pareja constituida por el suplemento metálico y la placa termoeléctrica, espárragos (2) que se disponen de manera alternativa, es decir, descentrados los que aprietan el disipador de calor respecto de los que aprietan el disipador de frío.2 .- refrigerator system ecological thermoelectric according to the preceding claim, characterized in that the overall mechanical rigidity is ensured by the clamping means or studs (2) are incorporated threaded or alternatively, embedded in the plate or intermediate piece (1) , of thermal insulating material, surrounding the pair constituted by the metallic supplement and the thermoelectric plate, studs (2) that are arranged alternately, that is to say, off-center those that tighten the heat sink with respect to those that squeeze the heat sink cold.
3a.- Sistema refrigerador termoeléctrico ecológico, según las reivindicaciones anteriores, caracterizado porque el disipador de frió puede tener aletas o ser, simplemente, la pared del recipiente o recinto a enfriar.3 .- ecological thermoelectric cooling system, according to previous claims, characterized in that the cold sink may have fins or be, simply, the wall of the container or enclosure to be cooled.
4a.- Sistema refrigerador termoeléctrico ecológico, según las reivindicaciones anteriores 1a y 2a, caracterizado porque el disipador de calor incorpora un intercambiador de calor aleteado funcionando en convección forzada con la ayuda de ventiladores.4 .- ecological thermoelectric cooling system, according to claim 1 and 2, wherein the heat sink includes a heat exchanger finned operating in forced convection with the aid of fans.
5a.- Sistema refrigerador termoeléctrico ecológico, según las reivindicaciones anteriores, caracterizado por permitir alternativamente la refrigeración o calentamiento de cualquier tipo de material, sólido, líquido o gaseoso. Statement πnder Art 19 (1) of the PCT (Rule 46.4 of the PCT Regnlations)5 .- ecological thermoelectric cooling system, according to previous claims, characterized by alternately enable cooling or heating of any type of material, solid, liquid or gaseous. Statement πnder Art 19 (1) of the PCT (Rule 46.4 of the PCT Regnlations)
Claim 1 has been amended by separating the background of the invention, specifically the elements composing the theπnoelectric module, from the elements that characteríze the invention, i.e. the holding system, its arrangement and the constructional form itself of the theπnoelectric module.Claim 1 has been amended by separating the background of the invention, specifically the elements composing the theπnoelectric module, from the elements that characteríze the invention, i.e. the holding system, its arrangement and the constructional form itself of the theπnoelectric module.
Claim 1 is described on page 2, lines 11 to 22 and on page 3, Unes 1 to 5, and illustrated in Hgure 2, followed by drawings of the example with different sections of the same object, which were merely intended for a better co prehension of the claim. Likewise, Figure 2 was drawn following a common practice in technical and patent documents. It is not a real section but a projective section of the frame or píate (1) on which the studs (2) are projected, to give an overall idea of the holder system therein claimed.Claim 1 is described on page 2, lines 11 to 22 and on page 3, Unes 1 to 5, and illustrated in Hgure 2, followed by drawings of the example with different sections of the same object, which were merely intended for a better co prehension of the claim. Likewise, Figure 2 was drawn following a common practice in technical and patent documents. It is not a real section but a projective section of the frame or píate (1) on which the studs (2) are projected, to give an overall idea of the holder system therein claimed.
Figures 2c and 2d hereto attached, however, are real A-A' and B-B' sections of 2a, where heat (6) and cold (7) dispersers have been included to complete the unit (refer to Descríption, page 3, lines 1 - 3).Figures 2c and 2d hereto attached, however, are real AA 'and BB' sections of 2a, where heat (6) and cold (7) dispersers have been included to complete the unit (refer to Description, page 3, lines 1 - 3 ).
As can be seen in the figures, this holder system is characterized by the incorporation of a frame, píate or intermedíate piece (1) of thermal insulating material (see Descríption, page 2, lines 18 - 19), situated adjacent to or surrounding (see Figure 2a hereto attached) a metallic supplement (4) and a thermoelectric píate (5) (see Descríption, page 1, lines 11 - 14). To this insulating frame, threaded studs (2) are screwed (Description, page. 2, line 19) or embedded (Descríption, page 3, lines 3 - 5) in an altérnate manner (Descríption, page 2, lines 20 - 21), a coní guration which can be clearly observed in Figures 2a and 2b hereto attached.As can be seen in the figures, this holder system is characterized by the incorporation of a frame, piate or intermediaíate piece (1) of thermal insulating material (see Description, page 2, lines 18 - 19), situated adjacent to or surrounding ( see Figure 2a hereto attached) a metallic supplement (4) and a thermoelectric píate (5) (see Description, page 1, lines 11-14). To this insulating frame, threaded studs (2) are screwed (Description, page. 2, line 19) or embedded (Description, page 3, lines 3 - 5) in an altérnate manner (Descríption, page 2, lines 20 - 21) , a con g guration which can be clearly observed in Figures 2a and 2b hereto attached.
Said altérnate arrangement means that the studs that hold the heat disperser to the unit are offcentered (on different axes) with respect to those holding the cold disperser, thus general mechanical stiffness being assured through the frame or píate (1) as claimed. This point was mentioned in the Descríption and Figures, but probably not explained clearly enough.Said altérnate arrangement means that the studs that hold the heat disperser to the unit are offcentered (on different axes) with respect to those holding the cold disperser, thus general mechanical stiffness being assured through the frame or píate (1) as claimed. This point was mentioned in the Description and Figures, but probably not explained clearly enough.
The dispersers may be provided with fíns or simply be the wall of the vessel or cooling área. Equally, the heat disperser (6) may be a finned heat exchanger working in fan-aided forced convection (Description, page 2, lines 29 - 32). The studs (2), because of not being set coaxial but alternately, can be embedded into the insulating frame, concretely in a hole (8) finished to size so that the stud will not turn, as can be seen in Figures 2c and 2d. In this way, the gripping is assured by the nut (9) screwed onto the disperser.The dispersers may be provided with fíns or simply be the wall of the vessel or cooling area. Equally, the heat disperser (6) may be a finned heat exchanger working in fan-aided forced convection (Description, page 2, lines 29-32). The studs (2), because of not being set coaxial but alternately, can be embedded into the insulating frame, concretely in a hole (8) finished to size so that the stud will not turn, as can be seen in Figures 2c and 2d . In this way, the gripping is assured by the nut (9) screwed onto the disperser.
The improvement achieved in the contacts or joints between cold disperser (7) - metallic supplement (4) - theπnoelectric píate (5) - heat disperser (6) elements is decisive in obtaining a better transmission of the heat pumped by the thermoelectric píate (Description, page 1, lines 18 - 20). Henee the convenience of using a highly conductive substance to assure the contact quality (Description, page 1, lins 20 - 25).The improvement achieved in the contacts or joints between cold disperser (7) - metallic supplement (4) - theπnoelectric píate (5) - heat disperser (6) elements is decisive in obtaining a better transmission of the heat pumped by the thermoelectric píate (Description , page 1, lines 18-20). Henee the convenience of using a highly conductive substance to assure the contact quality (Description, page 1, lins 20-25).
Likewise, it is necessary that the holder system assures a high mechanical stiffness without causing thermal bridges between the faces of cold and heat dispersers (Description, page 2, lines 11 - 14).Likewise, it is necessary that the holder system assures a high mechanical stiffness without causing thermal bridges between the faces of cold and heat dispersers (Description, page 2, lines 11 - 14).
The proposed holder system was engineered in order to satisfy these needs and allow application of high levéis of gripping to the module unit, cióse to the stud's (2) resistance, meaning high pressures of contact between the joints (Figure 2) of the elements.The proposed holder system was engineered in order to satisfy these needs and allow application of high levéis of gripping to the module unit, cióse to the stud's (2) resistance, meaning high pressures of contact between the joints (Figure 2) of the elements.
According to theoretical calculations (Rohsenow & Hartnet, Handbook of Heat Transfer, 1973), the thermal resistance of contact depends on said pressure to a considerable extent, which demonstrates the great importance of achieving an adequate level of gripping.According to theoretical calculations (Rohsenow & Hartnet, Handbook of Heat Transfer, 1973), the thermal resistance of contact depends on said pressure to a considerable extent, which demonstrates the great importance of achieving an adequate level of gripping.
As mentioned in the Description, page, 2, lines 14 - 17, losses in a thermoelectric module derived from the use of four studs of 5-mm diameter to hold the unit, without any device to break the thermal bridge between the cold and hot faces, are quite signifϊcant (about 32%).As mentioned in the Description, page, 2, lines 14 - 17, losses in a thermoelectric module derived from the use of four studs of 5-mm diameter to hold the unit, without any device to break the thermal bridge between the cold and hot faces, are quite signifϊcant (about 32%).
Thanks to the non-coaxial, i.e. altérnate, arrangement, the holder system proposed in patent application No. ES/95/00099 notably reduces these losses and, evidently, all the more when the mass of the collated insulant, whether by means of screwed or embedded studs, is greater. This new configuration offers the possibility of using a great amount of insulating material between the studs (2), thus considerably reducing the losses while maintaining an optimum thickness of the metallic supplement (4) (Description, page 1, lines 11 -1 6). This would be impossible to achieve with a coaxial confíguration because it would be necessary to sepárate, unnecessarily, the heat (6) and cold (7) dispersers by means of a bigger metallic supplement (4), subsequently increasing the distance between the studs in order to introduce necessary mass of insulant. This would produce a negative effect due to introducing supplementary thermal resistances which would offset the possible benefíts attainable. Thanks to the non-coaxial, ie altérnate, arrangement, the holder system proposed in patent application No. ES / 95/00099 notably reduces these losses and, evidently, all the more when the mass of the collated insulant, whether by means of screwed or embedded studs, is greater. This new configuration offers the possibility of using a great amount of insulating material between the studs (2), thus considerably reducing the losses while maintaining an optimum thickness of the metallic supplement (4) (Description, page 1, lines 11 -1 6) . This would be impossible to achieve with a coaxial configuration because it would be necessary to separate, unnecessarily, the heat (6) and cold (7) dispersers by means of a bigger metallic supplement (4), subsequently increasing the distance between the studs in order to introduce necessary mass of insulant. This would produce a negative effect due to introducing supplementary thermal resistances which would offset the possible benefits attainable.
PCT/ES1995/000099 1994-10-20 1995-08-09 Ecological thermoelectric refrigerating system WO1996012920A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AU31673/95A AU3167395A (en) 1994-10-20 1995-08-09 Ecological thermoelectric refrigerating system
MX9602404A MX9602404A (en) 1994-10-20 1995-08-09 Ecological thermoelectric refrigerating system.
DE69500158T DE69500158D1 (en) 1994-10-20 1995-08-09 Thermoelectric cooling system
JP8513657A JPH09507566A (en) 1994-10-20 1995-08-09 Ecological thermoelectric cooling mechanism
EP95927743A EP0719993B1 (en) 1994-10-20 1995-08-09 Thermoelectric cooling system

Applications Claiming Priority (2)

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ES9402192 1994-10-20
ESP9402192 1994-10-20

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WO1996012920A1 true WO1996012920A1 (en) 1996-05-02

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PCT/ES1995/000099 WO1996012920A1 (en) 1994-10-20 1995-08-09 Ecological thermoelectric refrigerating system

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EP (1) EP0719993B1 (en)
JP (1) JPH09507566A (en)
CN (1) CN1137312A (en)
AT (1) ATE148940T1 (en)
AU (1) AU3167395A (en)
CA (1) CA2179431A1 (en)
DE (1) DE69500158D1 (en)
IL (1) IL115686A0 (en)
MA (1) MA23696A1 (en)
MX (1) MX9602404A (en)
WO (1) WO1996012920A1 (en)
ZA (1) ZA958912B (en)

Cited By (3)

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EP0907972A1 (en) * 1996-05-10 1999-04-14 Tryport International, GmbH Improved thermoelectric unit with electric input/output provision
GB2443657A (en) * 2006-11-08 2008-05-14 4Energy Ltd Thermoelectric refrigerating device
CN113375362A (en) * 2020-03-10 2021-09-10 B/E航空公司 Refrigerating liquid recirculation device for kitchen refrigerating system

Families Citing this family (2)

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Publication number Priority date Publication date Assignee Title
GB2331838A (en) * 1997-11-24 1999-06-02 Coolbox Portable,thermoelectric,temperature controlled receptacles.
CN106403356B (en) * 2016-10-09 2022-08-02 珠海格力电器股份有限公司 Semiconductor refrigeration heat dissipation assembly, assembly method thereof and refrigeration equipment

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US3450572A (en) * 1962-04-24 1969-06-17 Philips Corp Method of assembling a peltier battery with heat exchanger and device so constructed
US3733836A (en) * 1972-01-17 1973-05-22 Melbro Corp Temperature controlled mobile cart
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US3040539A (en) * 1960-04-27 1962-06-26 Gen Motors Corp Refrigerating apparatus
US3137141A (en) * 1962-04-19 1964-06-16 Halsey W Taylor Company Thermoelectric water coolers
US3450572A (en) * 1962-04-24 1969-06-17 Philips Corp Method of assembling a peltier battery with heat exchanger and device so constructed
US3247577A (en) * 1962-12-28 1966-04-26 Borg Warner Thermoelectric module assembly technique
US3212274A (en) * 1964-07-28 1965-10-19 Eidus William Thermoelectric condenser
US3733836A (en) * 1972-01-17 1973-05-22 Melbro Corp Temperature controlled mobile cart
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US5398510A (en) * 1994-01-12 1995-03-21 Marlow Industries, Inc. Superinsulation panel with thermoelectric device and method

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EP0907972A1 (en) * 1996-05-10 1999-04-14 Tryport International, GmbH Improved thermoelectric unit with electric input/output provision
EP0907972A4 (en) * 1996-05-10 2001-02-28 Tryport International Gmbh Improved thermoelectric unit with electric input/output provision
GB2443657A (en) * 2006-11-08 2008-05-14 4Energy Ltd Thermoelectric refrigerating device
CN113375362A (en) * 2020-03-10 2021-09-10 B/E航空公司 Refrigerating liquid recirculation device for kitchen refrigerating system
CN113375362B (en) * 2020-03-10 2024-04-19 B/E航空公司 Refrigerating liquid recirculation device for kitchen refrigerating system

Also Published As

Publication number Publication date
EP0719993A1 (en) 1996-07-03
JPH09507566A (en) 1997-07-29
CA2179431A1 (en) 1996-05-02
MX9602404A (en) 1997-02-28
DE69500158D1 (en) 1997-03-27
ZA958912B (en) 1996-06-03
AU3167395A (en) 1996-05-15
EP0719993B1 (en) 1997-02-12
ATE148940T1 (en) 1997-02-15
IL115686A0 (en) 1996-01-19
CN1137312A (en) 1996-12-04
MA23696A1 (en) 1996-07-01

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