GB2347736A - Beverage cooler using Peltier devices - Google Patents

Beverage cooler using Peltier devices Download PDF

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Publication number
GB2347736A
GB2347736A GB0004465A GB0004465A GB2347736A GB 2347736 A GB2347736 A GB 2347736A GB 0004465 A GB0004465 A GB 0004465A GB 0004465 A GB0004465 A GB 0004465A GB 2347736 A GB2347736 A GB 2347736A
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GB
United Kingdom
Prior art keywords
beverage
heat exchanger
plate
peltier
tubes
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
Application number
GB0004465A
Other versions
GB2347736B (en
GB0004465D0 (en
Inventor
Keith James Heyes
Joseph Eugene Holland
William Robert Mooney
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cornelius Inc
Original Assignee
IMI Cornelius Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by IMI Cornelius Inc filed Critical IMI Cornelius Inc
Publication of GB0004465D0 publication Critical patent/GB0004465D0/en
Publication of GB2347736A publication Critical patent/GB2347736A/en
Application granted granted Critical
Publication of GB2347736B publication Critical patent/GB2347736B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D1/00—Apparatus or devices for dispensing beverages on draught
    • B67D1/08—Details
    • B67D1/0857—Cooling arrangements
    • B67D1/0869—Cooling arrangements using solid state elements, e.g. Peltier cells
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
    • H10N10/10—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects
    • H10N10/17—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects characterised by the structure or configuration of the cell or thermocouple forming the device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D2210/00—Indexing scheme relating to aspects and details of apparatus or devices for dispensing beverages on draught or for controlling flow of liquids under gravity from storage containers for dispensing purposes
    • B67D2210/00028—Constructional details
    • B67D2210/00047—Piping
    • B67D2210/0006—Manifolds

Abstract

The apparatus for cooling a beverage comprises an inlet and an outlet between which the beverage may be passed, and between which a thermoelectric device comprising at least one pair of Peltier plate assemblies 26 connectable to a variable voltage supply, thereby a hot and a cold side may be generated at each assembly, and a heat exchanger are positioned. The Peltier plate assemblies 26 are positioned one on each side of a central passageway 22 for the beverage with their cold sides adjacent the passageway. The passageway comprises a plurality of parallel individual tubes 70, 82 connected together at their ends whereby the beverage may pass along one tube in one direction and back along a second tube in the opposite direction and so on. The hot sides of each Peltier plate assembly 26 are covered by a heat exchanger plate 34 through which its heat can be dissipated into a coolant passing across the other side of the plate.

Description

BEVERAGE COOLER This invention relates to the cooling of beverages. In particular it relates to the cooling of alcoholic beverages such as beers which may need to be cooled to relatively low temperatures, e. g. about 0 C at the point of dispense.
Although not limited to the cooling of beers, the invention will for convenience be described below with particular reference to beers.
Cooling of beers to temperatures as low as about 0 C and dispensing at that low temperature have proved difficult to achieve with conventional dispense technology and this can deleteriously affect the appearance and presentation of the beer.
It has been proposed to use thermo-electric modules, so-called Peltier plate assemblies, in the cooling of fluids. A Peltier plate assembly is a well known construction in which, when connected to a voltage supply, a cold side and a hot side are produced. Fluid can be passed in contact with the cold side in order to cool the fluid and the hot side may be controlled by passage into contact with it of a coolant in a conventional heat exchanger arrangement.
It has, however, proved difficult to provide an efficient beverage cooling apparatus, based on the use of one or more Peltier plate assemblies, that can be economically constructed and it is, therefore, an object of the present invention to provide an improved apparatus for this purpose.
Accordingly, in one aspect, the invention provides an apparatus for cooling a beverage, the apparatus comprising an inlet and an outlet, between which the beverage may be passed, and between which a thermoelectric device comprising at least one pair of Peltier plate assemblies connectable to a variable voltage supply, whereby a hot and a cold side may be generated at each assembly, and a heat exchanger are positioned, the Peltier plate assemblies being positioned one on each side of a central passageway for the beverage with their cold sides adjacent the passageway, the passageway comprising a plurality of parallel individual tubes connected together at their ends whereby the beverage may pass along one tube in one direction and back along a second tube in the opposite direction and so on, and the hot sides of each Peltier plate assembly being covered by a heat exchanger plate through which its heat can be dissipated into a coolant passing across the other side of the plate.
Preferably the heat exchanger is connected into the apparatus to provide an initial cooling effect to the beverage which then passes through the central passageway between the Peltier plate assemblies to be further cooled by their cold sides before passing to the outlet and then on to a dispense point. The coolant in the heat exchanger may be passed from the heat exchanger, after cooling the beverage, into contact with the heat exchanger plates over the hot sides of the Peltier plate assemblies to thereby extract further heat and cool those hot sides. The coolant can then pass through a conventional python to be cooled and recirculated to the heat exchanger.
In another aspect the invention provides a thermoelectric device suitable for use in the beverage cooling apparatus defined above, the device comprising at least one pair of Peltier plate assemblies connectable to a variable voltage supply, whereby a hot side and a cold side may be generated at each assembly, the assemblies being positioned on one each side of a central passageway for the beverage with their cold sides adjacent the passageway, the passageway comprising a plurality of parallel individual tubes connected together at their ends whereby the beverage may pass along one tube in one direction and back along a second tube in the opposite direction and so on, the hot side of each Peltier plate assembly being covered by a heat exchanger plate through which its heat can be dissipated into a coolant passing across the other side of the plate.
The plurality of tubes forming the central passageway may form one or more rows of side by side tubes, the longitudinal axes of the tubes of each row lying in the same plane. The tubes then present two major corrugated surfaces which may each be covered by a covering plate having one planar major surface and its other major surface being corrugated to correspond to the corrugated surface presented by the side by side tubes. One or more Peltier plate assemblies may then be laid in contact with the planar face of each second plate.
Thus the device may be in the form of a sandwich of readily stackable components to form a compact unit and the components of the stack may be bonded or clamped together, e. g. by cable ties, or by other conventional mechanical clamping means.
Preferably the heat exchanger and covering plates are aluminium extrusions and the tubes are preferable stainless steel tubes, but other food grade materials, e. g. plastics materials, may be used..
In a particularly preferred specific embodiment a single layer of six stainless steel tubes laid side by side forms the central passageway.
The tubes may be, for example ouf'/4" (6.35 mm) diameter.
Four Peltier plate assemblies, e. g. each of 80 watts to 200 watts cooling capacity to provide a cold junction temperature of about-5 C to -8 C and a hot junction temperature of about +12 C to +18 C, may be laid in a row on top of each covering plate so as to lie between the covering plate and the respective heat exchanger plate.
The open ends of the tubes forming the central passageway may open into a conventional manifold arrangement whereby beverage flowing out of one tube may then flow into an adjacent tube. An open end of one tube will, of course, be connected to an inlet flow line for the beverage and an open end of another tube to an outlet flow line for the beverage.
Embodiments of the invention will now be described by way of example only with reference tot the accompanying drawings in which: Figure 1 is schematic arrangement of one embodiment of the invention ; Figure 2 is an isometric view of a thermoelectric device of the invention; Figure 3 is an exploded isometric view of the device of Figure 2; and Figures 4 and 5 are isometric views of a pair of manifold fittings for the device.
In Figure 1 the apparatus comprises a conventional heat exchanger 10, a thermoelectric assembly 12, an electronic control module 14 and a 24 volt voltage transformer 16.
Coolant flows into heat exchanger 10 at entry point A and leaves at exit point B from where it passes into the thermoelectric assembly 12 at entry point C. It passes through the assembly 12 in contact with its hot plate sides and leaves at exit D to be passed via a python at E to be cooled and then returned to entry point A of the heat exchanger.
A beverage to be cooled enters the heat exchanger 10 at entry point F, is initially cooled by the coolant as it passes through the heat exchanger and then leaves at exit point G. It then enters the thermoelectric assembly 12 at entry point H and passes around the assembly in contact with its cold plate side to leave, further cooled, at exit point I from which it can pass to a dispense tap.
The thermoelectric assembly 12 is a device according to the invention and is described in one embodiment in more detail below. It is connected to the electronic control module 14 and to a 24 volt supply from transformer 16 whereby the hot and cold sides of the plate assemblies are produced. The current through the assemblies can be switched on and off as required, e. g. by a flow sensor and/or activation of a dispense tap. When not dispensing, the cold faces may be held at about 0 C by the application of a reduced current, which is switched on and off by a temperature sensing device (not shown).
In Figures 2 and 3 is shown a thermoelectric device of the invention.
The device 20 has a central passageway 22 for beverage, this passageway being in the form of six parallel side by side individual steel tubes including outer tubes 70 and 82. The tubes are covered above and below by a pair of covering plates 24, each plate having a corrugated surface to lie in close contact with the tubes and a planar surface to receive four Peltier plate assemblies 26. Each assembly 26 has a pair of D. C. connectors 27,28 for connection to a suitable power supply.
A strip layer 30 surrounds three sides of each layer of Peltier assemblies, i. e. excluding the side having the D. C. connectors, and has three extension arms 32 to lie in the gaps between each of the four assemblies. This enables the four Peltier assemblies to be held together as a unit during assembly of the device.
A pair of heat exchangers 36 is each in the form of an extrusion having two major surfaces 38 and 34 between which are formed a plurality of longitudinal flow passages 39 for coolant. Each heat exchanger lies in contact with the hot side of its respective layer of Peltier assemblies and the beverage passageway lies between the cold sides of the two layers of Peltier assemblies.
Clips 40 hold the stacked structure together.
Manifold assemblies 44 and 46 are attached one at each end of the device. These manifolds, which are shown in greater detail in Figures 4 and 5, allow fluid communication into and through the heat exchangers 36 for the coolant and into and through the tubes of central passageway 22 for the beverage.
One end of each upper heat exchanger 36 fits into an upper slot 53 in the inner face of manifold 44 and one end of lower heat exchanger 36 fits into a lower slot 55 in the inner face of manifold 44.
The other end of upper heat exchanger 36 fits into an upper slot 57 in the inner face of manifold 46 and the other end of the lower heat exchanger 36 fits into a lower slot 59 in the inner face of manifold 46.
The heat exchanger passageways, therefore, communicate into their respective slots at each end of the heat exchangers.
As shown in Figure 4, inlet manifold 44 has inlets 48 and 50 which pass coolant via upper holes 52 and lower holes 54, which communicate with slots 53 and 55 respectively and from there into the passageways of the upper and lower heat exchangers 36. Coolant then passes through the plurality of flow passageways of heat exchangers 36 and exits via slots 57 and 59 through upper holes 56 and lower holes 58 to pass via outlets 60 and 62 of manifold 46 (Figure 5).
Beverage to be cooled passes into the central passageway 22 of the device via an inlet 64 of manifold 44 and leaves via outlet 66 of the same manifold. From inlet 64 it passes via hole 68 into end tube 70 of the array of tubes of the central passageway. It exits the far end of tube 70 into recess 72 in manifold 46, which recess also connects to the end of the next, i. e. second tube. The beverage flows back along the second tube into recess 74 in manifold 44, which also connects to the third tube.
It flows along the third tube to recess 76 in manifold 46 and from there along the fourth tube to recess 78 in manifold 44. It then flows along the fifth tube to recess 80 in manifold 46 and from there back along the last tube 82 into hole 84 in manifold 44 which leads to outlet 66 (shown in Figure 2). The cooled beverage can then pass to a dispense point.

Claims (15)

  1. CLAIMS 1. An apparatus for cooling a beverage, the apparatus comprising an inlet and an outlet, between which the beverage may be passed, and between which a thermoelectric device comprising at least one pair of Peltier plate assemblies connectable to a variable voltage supply, whereby a hot and a cold side may be generated at each assembly, and a heat exchanger are positioned, the Peltier plate assemblies being positioned one on each side of a central passageway for the beverage with their cold sides adjacent the passageway, the passageway comprising a plurality of parallel individual tubes connected together at their ends whereby the beverage may pass along one tube in one direction and back along a second tube in the opposite direction and so on, and the hot sides of each Peltier plate assembly being covered by a heat exchanger plate through which its heat can be dissipated into a coolant passing across the other side of the plate.
  2. 2. An apparatus according to Claim 1, in which the heat exchanger is connected into the apparatus to provide an initial cooling effect to the beverage, which then passes through the central passageway before passing through the outlet to a dispense point.
  3. 3. An apparatus according to Claim 1 or 2, in which the coolant in the heat exchanger is passed from the heat exchanger, after cooling the beverage, into contact with the heat exchanger plate over the hot sides of the Peltier plate assemblies to cool these hot sides.
  4. 4. An apparatus according to Claim 3, in which the coolant after cooling the hot sides of the Peltier plate assemblies is passed in a line to a conventional python to be cooled before recirculation to the heat exchanger.
  5. 5. An apparatus according to any preceding claim, in which the plurality of individual tubes form one or more rows of side by side tubes, the longitudinal axes of the tubes of each row lying in the same plane whereby the tubes present two major corrugated surfaces.
  6. 6. An apparatus according to Claim 5, in which each corrugated surface is covered by a covering plate, the covering plate having a corrugated surface to lie in correspondence with the corrugated surface presented by the tubes and a planar surface to receive the Peltier plate assemblies.
  7. 7. An apparatus according to Claim 6, in the form of a sandwich of stackable components bonded or clamped together.
  8. 8. An apparatus according to any preceding claims, in which the heat exchanger and covering plates are aluminium extrusions and the tubes are of stainless steel.
  9. 9. An apparatus according to any one of Claims 5 to 8, in which the central passageway is formed of a single layer of individual tubes.
  10. 10. An apparatus according to Claim 9, in which the single layer contains six stainless steel tubes of about'/4 inch (6.35 mm) diameter.
  11. 11. An apparatus according to any one of Claims 6 to 10, in which there are four Peltier plate assemblies between each covering plate and its respective heat exchanger plate, each Peltier plate assembly being of from 80 to 200 watts cooling capacity to provide a cold junction temperature of about-5 C to-8 C and a hot junction temperature of about +12 C to +18 C.
  12. 12. An apparatus according to any preceding claim, which includes a central unit to supply current to the Peltier plate assemblies from the voltage supply, the control unit switching on and off the current as required by means of a flow sensor or actuation of a dispense tap.
  13. 13. An apparatus according to any preceding claim, which includes a temperature sensing device for the beverage, whereby when the apparatus is not dispensing reduced current may be supplied to the Peltier plate assemblies, to maintain them at a desired temperature.
  14. 14. A thermoelectric device for use in a beverage cooling apparatus, the device comprising at least one pair of Peltier plate assemblies connectable to a variable voltage supply, whereby a hot side and a cold side may be generated at each assembly, the assemblies being positioned on one each side of a central passageway for the beverage with their cold sides adjacent the passageway, the passageway comprising a plurality of parallel individual tubes connected together at their ends whereby the beverage may pass along one tube in one direction and back along a second tube in the opposite direction and so on, the hot side of each Peltier plate assembly being covered by a heat exchanger plate through which its heat can be dissipated into a coolant passing across the other side of the plate.
  15. 15. A thermoelectric device according to Claim 13, substantially as hereinbefore described with reference to and as shown in Figure 3 of the accompanying drawings.
    15. An apparatus according to Claim 1, substantially as hereinbefore described with reference to and as shown in Figures 1 to 5 of the accompanying drawings.
    16. A thermoelectric device according to Claim 15, substantially as hereinbefore described with reference to and as shown in Figure 3 of the accompanying drawings.
    Amendments to the claims have been filed as follows CLAIMS 1. An apparatus for cooling a beverage, the apparatus comprising an inlet and an outlet, between which the beverage may be passed, and between which is positioned a thermoelectric device comprising at least one pair of Peltier plate assemblies connectable to a variable voltage supply, whereby a hot and a cold side may be generated at each assembly, a heat exchanger being positioned upstream of the Peltier assemblies to provide an initial cooling of the beverage, and the Peltier plate assemblies being positioned one on each side of a central passageway for the beverage with their cold sides adjacent the passageway, the passageway comprising a plurality of parallel individual tubes connected together at their ends whereby the beverage may pass along one tube in one direction and back along a second tube in the opposite direction and so on, and the hot sides of each Peltier plate assembly being covered by a heat exchanger plate through which its heat can be dissipated into a coolant passing across the other side of the plate.
    2. An apparatus according to Claim 1, in which the coolant in the heat exchanger is passed from the heat exchanger, after cooling the beverage, into contact with the heat exchanger plate over the hot sides of the Peltier plate assemblies to cool these hot sides.
    3. An apparatus according to Claim 2, in which the coolant after cooling the hot sides of the Peltier plate assemblies is passed in a line to a conventional python to be cooled before recirculation to the heat exchanger.
    4. An apparatus according to any preceding claim, in which the plurality of individual tubes form one or more rows of side by side tubes, the longitudinal axes of the tubes of each row lying in the same plane whereby the tubes present two major corrugated surfaces.
    5. An apparatus according to Claim 4, in which each corrugated surface is covered by a covering plate, the covering plate having a corrugated surface to lie in correspondence with the corrugated surface presented by the tubes and a planar surface to receive the Peltier plate assemblies.
    6. An apparatus according to Claim 5, in the form of a sandwich of stackable components bonded or clamped together.
    7. An apparatus according to any preceding claims, in which the heat exchanger and covering plates are aluminium extrusions and the tubes are of stainless steel.
    8. An apparatus according to any one of Claims 4 to 7, in which the central passageway is formed of a single layer of individual tubes.
    9. An apparatus according to Claim 8, in which the single layer contains six stainless steel tubes of about 1/4 inch (6.35 mm) diameter.
    10. An apparatus according to any one of Claims 5 to 9, in which there are four Peltier plate assemblies between each covering plate and its respective heat exchanger plate, each Peltier plate assembly being of from 80 to 200 watts cooling capacity to provide a cold junction temperature of about-5 C to-8 C and a hot junction temperature of about +12 C to +18 C.
    11. An apparatus according to any preceding claim, which includes a control unit to supply current to the Peltier plate assemblies from the voltage supply, the control unit switching on and off the current as required by means of a flow sensor or actuation of a dispense tap.
    12. An apparatus according to any preceding claim, which includes a temperature sensing device for the beverage, whereby when the apparatus is not dispensing reduced current may be supplied to the Peltier plate assemblies, to maintain them at a desired temperature.
    13. A thermoelectric device for use in a beverage cooling apparatus, the device comprising at least one pair of Peltier plate assemblies connectable to a variable voltage supply, whereby a hot side and a cold side may be generated at each assembly, the assemblies being positioned on one each side of a central passageway for the beverage with their cold sides adjacent the passageway, the passageway comprising a plurality of parallel individual tubes connected together at their ends whereby the beverage may pass along one tube in one direction and back along a second tube in the opposite direction and so on, the hot side of each Peltier plate assembly being covered by a heat exchanger plate through which its heat can be dissipated into a coolant passing across the other side of the plate.
    14. An apparatus according to Claim 1, substantially as hereinbefore described with reference to and as shown in Figures 1 to 5 of the accompanying drawings.
GB0004465A 1999-03-12 2000-02-28 Beverage cooler Expired - Fee Related GB2347736B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9905769.7A GB9905769D0 (en) 1999-03-12 1999-03-12 Beverage cooler

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GB0004465D0 GB0004465D0 (en) 2000-04-19
GB2347736A true GB2347736A (en) 2000-09-13
GB2347736B GB2347736B (en) 2001-02-14

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GB0004465A Expired - Fee Related GB2347736B (en) 1999-03-12 2000-02-28 Beverage cooler

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002038261A1 (en) * 2000-11-10 2002-05-16 Kundo System Technik Gmbh Device for producing carbonated drinking water
DE102007063196A1 (en) * 2007-12-19 2009-07-02 Bayerische Motoren Werke Aktiengesellschaft Thermoelectric generator, has connecting device comprising strapping element that sectionally encloses stack axis, where compressive force exerts on stack axis and is approximately aligned parallel to stack axis
DE102009005382B3 (en) * 2009-01-21 2010-03-25 D & K Solar Gmbh Thermoelectric generator module manufacturing method for e.g. heating system, involves cutting aluminum-plates, and arranging outer pressure plate so as to align larger holes of aluminum plates with respect to hole of pressure plate

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0338283A1 (en) * 1988-03-24 1989-10-25 Koslow Technologies Corporation Thermoelectric cooling device
GB2322732A (en) * 1997-02-24 1998-09-02 W S Atkins Consultants Limited Controlling the temperature of dispensed liquids
GB2333397A (en) * 1998-01-14 1999-07-21 Smc Corp Thermoelectric temperature control of corrosive fluids

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0338283A1 (en) * 1988-03-24 1989-10-25 Koslow Technologies Corporation Thermoelectric cooling device
GB2322732A (en) * 1997-02-24 1998-09-02 W S Atkins Consultants Limited Controlling the temperature of dispensed liquids
GB2333397A (en) * 1998-01-14 1999-07-21 Smc Corp Thermoelectric temperature control of corrosive fluids

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002038261A1 (en) * 2000-11-10 2002-05-16 Kundo System Technik Gmbh Device for producing carbonated drinking water
DE102007063196A1 (en) * 2007-12-19 2009-07-02 Bayerische Motoren Werke Aktiengesellschaft Thermoelectric generator, has connecting device comprising strapping element that sectionally encloses stack axis, where compressive force exerts on stack axis and is approximately aligned parallel to stack axis
DE102009005382B3 (en) * 2009-01-21 2010-03-25 D & K Solar Gmbh Thermoelectric generator module manufacturing method for e.g. heating system, involves cutting aluminum-plates, and arranging outer pressure plate so as to align larger holes of aluminum plates with respect to hole of pressure plate

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Publication number Publication date
GB2347736B (en) 2001-02-14
GB9905769D0 (en) 1999-05-05
GB0004465D0 (en) 2000-04-19

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Effective date: 20150228