CA1184318A - Thermoelectric cooling device - Google Patents
Thermoelectric cooling deviceInfo
- Publication number
- CA1184318A CA1184318A CA000446286A CA446286A CA1184318A CA 1184318 A CA1184318 A CA 1184318A CA 000446286 A CA000446286 A CA 000446286A CA 446286 A CA446286 A CA 446286A CA 1184318 A CA1184318 A CA 1184318A
- Authority
- CA
- Canada
- Prior art keywords
- thermal sink
- insulating wall
- external thermal
- cooling device
- thermoelectric
- 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.)
- Expired
Links
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- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
APPLICATION FOR LETTERS PATENT FOR
THERMOELECTRIC DEVICE AND PROCESS FOR MAKING THE SAME
ABSTRACT OF THE DISCLOSURE
There is disclosed a portable refrigerator which is formed by casting an insulating wall of foamed-in-place insulating foam in a manner which provides inner and outer shell portions on the insulating wall and a depression therein which exposes a surface of the internal thermal sink and, except for a pigtail and posi-tive and negative contact points which points project through the outer shell portion in position to be connected with the positive and negative poles, respectively, of the thermoelectric element, completely imbeds the electrical connections. A thermo-electric element is disposed in the depression in heat-exchange with the surface of the internal thermal sink exposed by the depression and the positive and negative poles of the thermo-electric element are connected with the respective positive and negative contact points. An annular gasket of resilient and compressible sealing material is disposed on the outer shell in position such that it completely surrounds the depression and the thermoelectric element therein and covers the contact points.
An external thermal sink is disposed in sealing contact with the sealing gasket and the two thermal sinks are drawn toward each other until the gasket is compressed and the thermal sinks are in heat-exchange with the thermoelectric element. The thermoelectric cooling device has a rim extending around but spaced from the external thermal sink of such height that the edge of the rim and the outermost surfaces of the external thermal sink are substantially in a common plane.
THERMOELECTRIC DEVICE AND PROCESS FOR MAKING THE SAME
ABSTRACT OF THE DISCLOSURE
There is disclosed a portable refrigerator which is formed by casting an insulating wall of foamed-in-place insulating foam in a manner which provides inner and outer shell portions on the insulating wall and a depression therein which exposes a surface of the internal thermal sink and, except for a pigtail and posi-tive and negative contact points which points project through the outer shell portion in position to be connected with the positive and negative poles, respectively, of the thermoelectric element, completely imbeds the electrical connections. A thermo-electric element is disposed in the depression in heat-exchange with the surface of the internal thermal sink exposed by the depression and the positive and negative poles of the thermo-electric element are connected with the respective positive and negative contact points. An annular gasket of resilient and compressible sealing material is disposed on the outer shell in position such that it completely surrounds the depression and the thermoelectric element therein and covers the contact points.
An external thermal sink is disposed in sealing contact with the sealing gasket and the two thermal sinks are drawn toward each other until the gasket is compressed and the thermal sinks are in heat-exchange with the thermoelectric element. The thermoelectric cooling device has a rim extending around but spaced from the external thermal sink of such height that the edge of the rim and the outermost surfaces of the external thermal sink are substantially in a common plane.
Description
3~
This appllcation is a division of parent application 392,517 filed December 17, 1981.
l'}lERMOELECTRIC DEVICE AND PROCESS ~IOR MAKING THE SAME
FIELD OF INVE~TION AND PRIOR ART
..
This invention relates to a thermoelectric device and a process for making the same.
The invention i~ particularly directed to improvements in the cooling device illustrated in U. S~ Patent 4,107,934.
Thermoelectric devices powered by a thermoelectric element of the Peltier type are well known in the art, as shown by the above-identified patent and the patents cited therein. ~he device shown in U. S. Patent 4~107,934 has the advantage that the thermoelectric element is not completely imbedded in the insulat-ing wall, but has the disadvan~age that the thermoelectric element is exposed to the ambient atmosphere and is susceptiblP to mal-functioning in inclement weather or in marine usage. It also has the disadvantage that the external thermal sink is exposed to accidental blows which can damage the thermoelectric element. It further has the disadv~ntage that it is expensive and difficult to manufacture.
OBJECTS OF THE INVENTION
It is an object of the invention to provide an improved thermoelectric device and process for making the same. It is a further object of the invention to provide an improved thermo-electric cooling device. It is a further o~ject of the invention to provide for the economic and facile manufacture of such devices It is a still further object of the invention to provide thermo-electric devices of the class described which are insensitive to ambient ~onditions involving water, as in inclement weather and in marine usage. Still another object of the invention is to provide a thermoelectric device of the class described in which the external thexmal sink is protected against accidental blows-BI~OL-~
3~ -which might damage the thermoelectric element.
BRIEF DESCRIPTION OF THE INVENTION
.
This invention relates to a thermoelectric device powered by a thermoelectric element of the Peltier type which comprises an insulatin~ wall Q~ foamed-in-place insulating foam cast about an internal thermal sink in a manner which produces an inner and outer shell portion on the insulating wall and a depression therein which exposes a surface of the internal thermal sink, the thermoelectric element being disposed in this depression in heat-exchange with the surface of the internal thermal sink exposed by the depression; and an annular resilient and compress-ible sealing gasket disposed on the outer shell portion in sealing contact with outer shell portion and an external thermal sink and being compressible thereby, the sealing gasket heing maintained under compression and the thermal sinks being maintained in heat-exchange with the thermoelectric element by draw means which draws the two thermal sinks toward each other sufficiently to compress the gasket an~ to bring them into heat-exchange with the thermoelectric element.
The inner and outer shell portions can be pre-formed or formed from polyurethane foam in which the inner and outer shell portions are formed in situ as a skin on the polyurethane foam.
This aspect of the invention also comprises a process which comprises casting the insulating wall of foamed-in-place plastic about the internal thermal sink in a manner which provides inner and outer shell portions on the insulating wall and a depression therein which exposes a surface ~f the internal thermal sink;
placing the thermoelectric element in the depression in heat-exchange with the surface of the internal thermal sink exposed by the depression; placing an annular resilient and compressible BI 1'01~ 4 ~8~3~
sealing gasket on the outer shell portion in position such that it completely surrounds the depression and the thermoelectric element therein; placing an external thermal sin~ in sealing contact with the sealing yasket; and, drawing the two sinks toward each other ~ntil the gasket is compressed and the thexmal sinks are in heat-exchange with the thermoelectric element.
In the process, the inner and outer shell portions are either pre-formed or, the insulating foam is a polyurethane foam which is cast in such a manner as to form the inner and outer shell portions in situ.
The invention also comprises electrical connectors which, except for positive and negative contac~ points which project through the outer shell portion in position to be connected to the positive and negative poles, respectively, o ~he thermo-electric element, are completely imbedded in the insulating wall and electrically-connected with the contact points and in which the contact points are covered by the annular sealing gas}cet and thus protected from exposure to moisture.
According to another aspect of the invention, there is provided a thermoe:Lectric cooling device having an insulating wall with an insulated thermal sink imbedded in the insulation thereo~ and having a surface thereof adjacent the surface of the insulating wall and exposed by a depression therein which has a thermoelectric device having a cold face and a hot ~ace disposed in the depression with the cold face thereof in heat-exchange with the surface of the internal thermal sink exposed by the depression; an external thermal sink; and an annular resilient and compressible sealing gasket surrounding the depression and the thermoelectric element therein in sealing contact with the 3 insulating wall and the external thermal sink and under compression BI POI~ ~l 3~3 between the two~
~ dvantageously, too, the insulating wall has electrical connectors imbedded in the insulation thereof which extend through the outer surface thereo~ to the thermoelectric element and in which the annular gasket overlies the outermost por-tion of the exposed connectors and seals them against exposure to moisture.
A further aspect of the invention comprises a thermoelectric cooling device having an insulating wall having an internal thermal sink imhedded therein and a flat external thermal sink parallel to and spaced from the insulating wall characterized in that the insulating wall has a rim extending around ~ut spaced from the external thermal sink of such height that the edge of the rim and the outer flat surface of the external thermal sink are substantially in a common plane. The presen-t divisional application is directed to this further aspect of the invention~
In_*he drawings.
FIG. 1 is an isometric. view of a portable refrigerator of the invention;
FIG~ 2 is an exploded view in isometric of the box portion of FIG~ l;
FIG. 3 is a fragmentary view of a cross-section ta~en along line 3-3 of FIG. l;
FIG. 4 is an exploded view in isometric of FIG. 3; and,.
FIG. 5 is a plan view, looking in the direction of the arrows in FIG. 4~
DETAILED DESCRIPTION OF THE INVENTION
... .. .. _ .
ln the embodiment of the invention shown in the drawings, there is provided a portable refrigerator 10, comprising a con-tainer portion 12 and a cover portîon 14 fas~ened thereto by 30 hasps 16 on one side, and hinges, not shown, on the other side~
sI~oL-4 3~
The container proper is made up of an outer shell 18 and an inner shell 20, as better seen FIGo 2. The inner shell 20, advantageously, is made of plastic, but could, if desired, be made of aluminum or other heat-conducking metal. Fitted snugly against the ends and bottom of the inner shell 20 is a thermal sink 22. At each end of the thermal sink 22 is a U-shaped thermal sink 24 bolted to the end walls 26 of the thermal sink 22. The bolts 28 extend out beyond the flat end or bight 30 of the U-shaped thermal sink 24, as clearly shown in FIGS. 2 and 3.
When the parts are assembled, laterally~nding side rims 32 of the inner shell 29 overlap the sides 34 of the outer shell 18 and the ends 36 abut the end walls 38 of the outer shell 18 and are countersunk therein, as ~n at 39, th-~ hold~g the inner shell 20 spaced from ~he side, ends, and bottom of the outer shell 18.
The end walls 38 have an inset panel 40 fitted in chamfers 42 in the end wall 38. The inset panel 40 has a square hole 44 which is a little smaller than the face 30 of the thermal sink 24 and oriented with respect thereto, as shown in FIG. 5. It forms a depression in the end walls 38 which expose the face 30 of the thermal sink 24.
The inset 40 has two electrical contacts 46 and 48 which are connected by electrical wires 50 and 52 to a pigtail 54, which extends out rom the interior through the bottom portion of one of the walls 38 and is connected to a polarized plug 56, which is suitable for insertion into the li~hter socket in a motor vehicle, such as a car, an airplane, vr a boat.
When this much of the refrigerator is assembled, it is placed in a press and injected with a plastic foam-forming com-position to fill the space ~etween the inner and outer shell with foam insulation and to imbed the wires 50 and 52 and the inner Bl1'0~9 3~
portion of the el~ctric cord 54 in the insulation.
Ther~after, the external portions 58 and 60 of the electricalconnec~ors 46 and 48 are connec~ed by electrical wires 62 and 64 to the positive and negative sides of the thermal electric el~t 66 which has a flat face 68 in surface-to-surface contact with the flat face 30 of the thermal sink 24, and a flat face 70 in surface~to-surface contact with an inner flat face 72 of an external thermal sink 74~ which is bolted up tight with the thermoelectric element 66 in compression between the faces 72 and 30 by the draw bolts 28.
Before the external thermal sink 74 is put into place, ~here i~ placed around the thermoelectric element 66, an annular sealing gasket 76, composed of resilient and compressible material. This gasket is held in place by the draw bolts 28 passing up through the slots 78 and 80 in the annular gasket 76. The end 82 of the annular gasket is made long enough to overlap substantially the electrical connectors 46 and 48, as best s~ in FIG. 3 and, is of such thickne~s that, when the external thermal sink 74 is bolted onto the thermoelectric element 66, the gasket is put in compression, thereby completely isolating the thermoelectric element from ambient conditions, such as moisture, and the like. At the same time, the overlapping portion 82 isolates the electrical connectors ~6 and g~ and electrir~l wires 62 and 64 from exposure to ambien~ conditions.
The external thermal sink 74 is made of material of high heat-ccnductivity, for e~le, aluminum, has a plurality o vertically-~ding ribs 84 and at least laterally-extending fins 86 and 87 extending ~tera11y franthe centr~ panel 88, in ~ ch the r~s 84 are formed. The fins 87 are planar with their outer surfaces ~nd the outer ends of the ribs 84 lying in a common plane.
3~ The external th~rmal sink 74 is rectangular in shape and of 13I1~4 3~
ca~
a thickness so correlated with the indentations in the ends 38 of the container that the outermost surface 90 of the external thermal sink 74 is flush with the outermost sur~ace of rim 92 of the ends 38.
The cover 14 is independently produced and filled with foam insulation and then hinged to the container 12, as already described.
Thus, there is provided a portable refrigerator container which is simple and effective in construction, sy~netrical in outline, contains no external.thermal sinks which project beyond the walls thereo, and in which the thermoelectric elements and the electrical connections are completely isolated from ambient conditions~
There is also provided a new and improved process in which the insulating wall is cast of foamed-in-place insulating foam about the internal thermal sink in a manner which provides inner and outer shell portions on the insulating wall and in which ~he parts are assemb:Led in a manner to provide a portable refri~erator in which the thermoelectric element and the electrical connections thereto are isolated from and protected from ar~ient conditions.
While the specific embodiment discloses a pre-formed con-tainer with inner and outer shell portions, it is to be understood that the inner and outer shell portions can be formed in situ by using a polyurethane foam of the kind which, when cast in a suitahle mold, produces a dense skin.
It is to be understood that the invention is not to be limited to the exact details of operation or structure shown and described, as obvious modifications and equivalents will be apparent to one skilled in the art.
This appllcation is a division of parent application 392,517 filed December 17, 1981.
l'}lERMOELECTRIC DEVICE AND PROCESS ~IOR MAKING THE SAME
FIELD OF INVE~TION AND PRIOR ART
..
This invention relates to a thermoelectric device and a process for making the same.
The invention i~ particularly directed to improvements in the cooling device illustrated in U. S~ Patent 4,107,934.
Thermoelectric devices powered by a thermoelectric element of the Peltier type are well known in the art, as shown by the above-identified patent and the patents cited therein. ~he device shown in U. S. Patent 4~107,934 has the advantage that the thermoelectric element is not completely imbedded in the insulat-ing wall, but has the disadvan~age that the thermoelectric element is exposed to the ambient atmosphere and is susceptiblP to mal-functioning in inclement weather or in marine usage. It also has the disadvantage that the external thermal sink is exposed to accidental blows which can damage the thermoelectric element. It further has the disadv~ntage that it is expensive and difficult to manufacture.
OBJECTS OF THE INVENTION
It is an object of the invention to provide an improved thermoelectric device and process for making the same. It is a further object of the invention to provide an improved thermo-electric cooling device. It is a further o~ject of the invention to provide for the economic and facile manufacture of such devices It is a still further object of the invention to provide thermo-electric devices of the class described which are insensitive to ambient ~onditions involving water, as in inclement weather and in marine usage. Still another object of the invention is to provide a thermoelectric device of the class described in which the external thexmal sink is protected against accidental blows-BI~OL-~
3~ -which might damage the thermoelectric element.
BRIEF DESCRIPTION OF THE INVENTION
.
This invention relates to a thermoelectric device powered by a thermoelectric element of the Peltier type which comprises an insulatin~ wall Q~ foamed-in-place insulating foam cast about an internal thermal sink in a manner which produces an inner and outer shell portion on the insulating wall and a depression therein which exposes a surface of the internal thermal sink, the thermoelectric element being disposed in this depression in heat-exchange with the surface of the internal thermal sink exposed by the depression; and an annular resilient and compress-ible sealing gasket disposed on the outer shell portion in sealing contact with outer shell portion and an external thermal sink and being compressible thereby, the sealing gasket heing maintained under compression and the thermal sinks being maintained in heat-exchange with the thermoelectric element by draw means which draws the two thermal sinks toward each other sufficiently to compress the gasket an~ to bring them into heat-exchange with the thermoelectric element.
The inner and outer shell portions can be pre-formed or formed from polyurethane foam in which the inner and outer shell portions are formed in situ as a skin on the polyurethane foam.
This aspect of the invention also comprises a process which comprises casting the insulating wall of foamed-in-place plastic about the internal thermal sink in a manner which provides inner and outer shell portions on the insulating wall and a depression therein which exposes a surface ~f the internal thermal sink;
placing the thermoelectric element in the depression in heat-exchange with the surface of the internal thermal sink exposed by the depression; placing an annular resilient and compressible BI 1'01~ 4 ~8~3~
sealing gasket on the outer shell portion in position such that it completely surrounds the depression and the thermoelectric element therein; placing an external thermal sin~ in sealing contact with the sealing yasket; and, drawing the two sinks toward each other ~ntil the gasket is compressed and the thexmal sinks are in heat-exchange with the thermoelectric element.
In the process, the inner and outer shell portions are either pre-formed or, the insulating foam is a polyurethane foam which is cast in such a manner as to form the inner and outer shell portions in situ.
The invention also comprises electrical connectors which, except for positive and negative contac~ points which project through the outer shell portion in position to be connected to the positive and negative poles, respectively, o ~he thermo-electric element, are completely imbedded in the insulating wall and electrically-connected with the contact points and in which the contact points are covered by the annular sealing gas}cet and thus protected from exposure to moisture.
According to another aspect of the invention, there is provided a thermoe:Lectric cooling device having an insulating wall with an insulated thermal sink imbedded in the insulation thereo~ and having a surface thereof adjacent the surface of the insulating wall and exposed by a depression therein which has a thermoelectric device having a cold face and a hot ~ace disposed in the depression with the cold face thereof in heat-exchange with the surface of the internal thermal sink exposed by the depression; an external thermal sink; and an annular resilient and compressible sealing gasket surrounding the depression and the thermoelectric element therein in sealing contact with the 3 insulating wall and the external thermal sink and under compression BI POI~ ~l 3~3 between the two~
~ dvantageously, too, the insulating wall has electrical connectors imbedded in the insulation thereof which extend through the outer surface thereo~ to the thermoelectric element and in which the annular gasket overlies the outermost por-tion of the exposed connectors and seals them against exposure to moisture.
A further aspect of the invention comprises a thermoelectric cooling device having an insulating wall having an internal thermal sink imhedded therein and a flat external thermal sink parallel to and spaced from the insulating wall characterized in that the insulating wall has a rim extending around ~ut spaced from the external thermal sink of such height that the edge of the rim and the outer flat surface of the external thermal sink are substantially in a common plane. The presen-t divisional application is directed to this further aspect of the invention~
In_*he drawings.
FIG. 1 is an isometric. view of a portable refrigerator of the invention;
FIG~ 2 is an exploded view in isometric of the box portion of FIG~ l;
FIG. 3 is a fragmentary view of a cross-section ta~en along line 3-3 of FIG. l;
FIG. 4 is an exploded view in isometric of FIG. 3; and,.
FIG. 5 is a plan view, looking in the direction of the arrows in FIG. 4~
DETAILED DESCRIPTION OF THE INVENTION
... .. .. _ .
ln the embodiment of the invention shown in the drawings, there is provided a portable refrigerator 10, comprising a con-tainer portion 12 and a cover portîon 14 fas~ened thereto by 30 hasps 16 on one side, and hinges, not shown, on the other side~
sI~oL-4 3~
The container proper is made up of an outer shell 18 and an inner shell 20, as better seen FIGo 2. The inner shell 20, advantageously, is made of plastic, but could, if desired, be made of aluminum or other heat-conducking metal. Fitted snugly against the ends and bottom of the inner shell 20 is a thermal sink 22. At each end of the thermal sink 22 is a U-shaped thermal sink 24 bolted to the end walls 26 of the thermal sink 22. The bolts 28 extend out beyond the flat end or bight 30 of the U-shaped thermal sink 24, as clearly shown in FIGS. 2 and 3.
When the parts are assembled, laterally~nding side rims 32 of the inner shell 29 overlap the sides 34 of the outer shell 18 and the ends 36 abut the end walls 38 of the outer shell 18 and are countersunk therein, as ~n at 39, th-~ hold~g the inner shell 20 spaced from ~he side, ends, and bottom of the outer shell 18.
The end walls 38 have an inset panel 40 fitted in chamfers 42 in the end wall 38. The inset panel 40 has a square hole 44 which is a little smaller than the face 30 of the thermal sink 24 and oriented with respect thereto, as shown in FIG. 5. It forms a depression in the end walls 38 which expose the face 30 of the thermal sink 24.
The inset 40 has two electrical contacts 46 and 48 which are connected by electrical wires 50 and 52 to a pigtail 54, which extends out rom the interior through the bottom portion of one of the walls 38 and is connected to a polarized plug 56, which is suitable for insertion into the li~hter socket in a motor vehicle, such as a car, an airplane, vr a boat.
When this much of the refrigerator is assembled, it is placed in a press and injected with a plastic foam-forming com-position to fill the space ~etween the inner and outer shell with foam insulation and to imbed the wires 50 and 52 and the inner Bl1'0~9 3~
portion of the el~ctric cord 54 in the insulation.
Ther~after, the external portions 58 and 60 of the electricalconnec~ors 46 and 48 are connec~ed by electrical wires 62 and 64 to the positive and negative sides of the thermal electric el~t 66 which has a flat face 68 in surface-to-surface contact with the flat face 30 of the thermal sink 24, and a flat face 70 in surface~to-surface contact with an inner flat face 72 of an external thermal sink 74~ which is bolted up tight with the thermoelectric element 66 in compression between the faces 72 and 30 by the draw bolts 28.
Before the external thermal sink 74 is put into place, ~here i~ placed around the thermoelectric element 66, an annular sealing gasket 76, composed of resilient and compressible material. This gasket is held in place by the draw bolts 28 passing up through the slots 78 and 80 in the annular gasket 76. The end 82 of the annular gasket is made long enough to overlap substantially the electrical connectors 46 and 48, as best s~ in FIG. 3 and, is of such thickne~s that, when the external thermal sink 74 is bolted onto the thermoelectric element 66, the gasket is put in compression, thereby completely isolating the thermoelectric element from ambient conditions, such as moisture, and the like. At the same time, the overlapping portion 82 isolates the electrical connectors ~6 and g~ and electrir~l wires 62 and 64 from exposure to ambien~ conditions.
The external thermal sink 74 is made of material of high heat-ccnductivity, for e~le, aluminum, has a plurality o vertically-~ding ribs 84 and at least laterally-extending fins 86 and 87 extending ~tera11y franthe centr~ panel 88, in ~ ch the r~s 84 are formed. The fins 87 are planar with their outer surfaces ~nd the outer ends of the ribs 84 lying in a common plane.
3~ The external th~rmal sink 74 is rectangular in shape and of 13I1~4 3~
ca~
a thickness so correlated with the indentations in the ends 38 of the container that the outermost surface 90 of the external thermal sink 74 is flush with the outermost sur~ace of rim 92 of the ends 38.
The cover 14 is independently produced and filled with foam insulation and then hinged to the container 12, as already described.
Thus, there is provided a portable refrigerator container which is simple and effective in construction, sy~netrical in outline, contains no external.thermal sinks which project beyond the walls thereo, and in which the thermoelectric elements and the electrical connections are completely isolated from ambient conditions~
There is also provided a new and improved process in which the insulating wall is cast of foamed-in-place insulating foam about the internal thermal sink in a manner which provides inner and outer shell portions on the insulating wall and in which ~he parts are assemb:Led in a manner to provide a portable refri~erator in which the thermoelectric element and the electrical connections thereto are isolated from and protected from ar~ient conditions.
While the specific embodiment discloses a pre-formed con-tainer with inner and outer shell portions, it is to be understood that the inner and outer shell portions can be formed in situ by using a polyurethane foam of the kind which, when cast in a suitahle mold, produces a dense skin.
It is to be understood that the invention is not to be limited to the exact details of operation or structure shown and described, as obvious modifications and equivalents will be apparent to one skilled in the art.
Claims (6)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A thermoelectric cooling device having an insulating wall having an internal thermal sink embedded therein and an external thermal sink, the outermost portions of which lie in a common plane parallel to and spaced from said insulating wall characterized in that said insulating wall has a rim extending around but spaced from said external thermal sink of such height that the edge of said rim is substantially in said common plane.
2. A thermoelectric cooling device according to Claim 1, in which said external thermal sink comprises a plurality of flat fins having vertically-disposed parallel surfaces forming open-ended vertical channels.
3. A thermoelectric cooling device having an insulating wall defining a cavity having first and second outer surfaces and an internal thermal sink embedded in said wall and an external thermal sink in said cavity, said external thermal sink comprising a plurality of flat surfaces having inner portions which lie in a common plane parallel to and spaced from said first insulating wall surface, and said second outer surface having extending rim-like members which surrounds said cavity.
4. A thermoelectric cooling device according to Claim 3, in which said external thermal sink comprises a plurality of flat surfaces parallel to said common plane and to each other and which lie in between said insulating wall and the outermost edges of said rim members.
5. A thermoelectric cooling device as defined in Claim 1 including a thermoelectric device interposed between said internal thermal sink and said external thermal sink in heat-exchange relationship with respective areas thereof.
6. A thermoelectric cooling device according to Claim 5, in which said insulating wall has electrical connectors embedded in the insulation thereof which extend through the outer surface thereof to said thermo-electric device.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US217,585 | 1980-12-18 | ||
| US06/217,585 US4346562A (en) | 1980-12-18 | 1980-12-18 | Thermoelectric device and process for making the same |
| CA000392517A CA1169165A (en) | 1980-12-18 | 1981-12-17 | Thermoelectric device and process for making the same |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000392517A Division CA1169165A (en) | 1980-12-18 | 1981-12-17 | Thermoelectric device and process for making the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1184318A true CA1184318A (en) | 1985-03-19 |
Family
ID=25669511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000446286A Expired CA1184318A (en) | 1980-12-18 | 1984-01-27 | Thermoelectric cooling device |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1184318A (en) |
-
1984
- 1984-01-27 CA CA000446286A patent/CA1184318A/en not_active Expired
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|---|---|---|---|
| MKEX | Expiry |