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CA2432860A1 - Distributed electronic personal heat management system - Google Patents

Distributed electronic personal heat management system Download PDF

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Publication number
CA2432860A1
CA2432860A1 CA002432860A CA2432860A CA2432860A1 CA 2432860 A1 CA2432860 A1 CA 2432860A1 CA 002432860 A CA002432860 A CA 002432860A CA 2432860 A CA2432860 A CA 2432860A CA 2432860 A1 CA2432860 A1 CA 2432860A1
Authority
CA
Canada
Prior art keywords
tubes
garment
radiator
heat
operatively connected
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.)
Abandoned
Application number
CA002432860A
Other languages
French (fr)
Inventor
Randall D. Templeton
Robert G. Dickie
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.)
EIDP Inc
Original Assignee
DuPont Canada 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 DuPont Canada Inc filed Critical DuPont Canada Inc
Priority to CA002432860A priority Critical patent/CA2432860A1/en
Priority to PCT/CA2004/000889 priority patent/WO2004111741A1/en
Publication of CA2432860A1 publication Critical patent/CA2432860A1/en
Abandoned legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F7/007Heating or cooling appliances for medical or therapeutic treatment of the human body characterised by electric heating
    • AHUMAN NECESSITIES
    • A41WEARING APPAREL
    • A41DOUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/002Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches with controlled internal environment
    • A41D13/005Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches with controlled internal environment with controlled temperature
    • A41D13/0051Heated garments
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B21/00Machines, plants or systems, using electric or magnetic effects
    • F25B21/02Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
    • F25B21/04Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect reversible
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B25/00Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
    • F25B25/005Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00 using primary and secondary systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00Tubular elements; Assemblies of tubular elements
    • F28F1/10Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/14Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
    • F28F1/22Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally the means having portions engaging further tubular elements
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10NELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N10/00Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
    • H10N10/10Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects
    • H10N10/13Thermoelectric 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 heat-exchanging means at the junction
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F2007/0001Body part
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F2007/0054Heating or cooling appliances for medical or therapeutic treatment of the human body with a closed fluid circuit, e.g. hot water
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F7/007Heating or cooling appliances for medical or therapeutic treatment of the human body characterised by electric heating
    • A61F2007/0075Heating or cooling appliances for medical or therapeutic treatment of the human body characterised by electric heating using a Peltier element, e.g. near the spot to be heated or cooled
    • A61F2007/0076Heating or cooling appliances for medical or therapeutic treatment of the human body characterised by electric heating using a Peltier element, e.g. near the spot to be heated or cooled remote from the spot to be heated or cooled
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F7/02Compresses or poultices for effecting heating or cooling
    • A61F2007/0225Compresses or poultices for effecting heating or cooling connected to the body or a part thereof
    • A61F2007/0233Compresses or poultices for effecting heating or cooling connected to the body or a part thereof connected to or incorporated in clothing or garments
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B17/00Protective clothing affording protection against heat or harmful chemical agents or for use at high altitudes
    • A62B17/005Active or passive body temperature control
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2321/00Details of machines, plants or systems, using electric or magnetic effects
    • F25B2321/02Details of machines, plants or systems, using electric or magnetic effects using Peltier effects; using Nernst-Ettinghausen effects
    • F25B2321/025Removal of heat
    • F25B2321/0252Removal of heat by liquids or two-phase fluids
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2400/00General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/26Refrigerating devices for cooling wearing apparel, e.g. garments, hats, shoes or gloves

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Geometry (AREA)
  • Textile Engineering (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Environmental & Geological Engineering (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)

Abstract

There is provided a modular heating or cooling device that includes a Peltier device, a radiator and a heat exchanger. The Peltier device has a first side and a second side, wherein the Peltier device can be operated in two modes: a first anode where the first side is colder and the second side is warmer, and a second mode where the first side is warmer and the second side is colder. The radiator is operatively connected to the second side for dissipating heat to the environment when the Peltier device is operated in the first mode, while the heat exchanger is operatively connected to the first side. The heat exchanger includes one or more tubes in a side-by-side spaced apart relationship, preferably the tubes being surrounded by and sealed to a first foil so as to maintain the tubes in the spaced apart relationship. There is a heat exchange fluid in the tubes and a pump for circulating the heat exchange fluid in the tubes

Description

Distributed Electronic Personal Heat Management System Field of the Invention:
[0001] The present invention relates to personal heat management systems and in particular to garments that provide heating or cooling to the wearer of the garment. The heat management system includes a Peltier device, a radiator and a heat exchanger having one or more tubes.
Background of the Invention:
[0002) Peltier devices are well k~.lown in the art. When a low voltage DC
power source is applied to a thermoelectric module, heat can be moved through the module from one side to the other. One module face is therefore cooled while the opposite face is simultaneously heated. This phenomenon can also be reversed by changing the polarity of the voltage.
Today's Peltier devices, first introduced in about 1960, makf; use of modern semiconductor technology substituting doped semiconductor material for the dissimilar metals used in early thermoelectric experiments.
[0003] Pettier devices are, therefore, solid-state component,. that cool a system by drawing heat from one side of the module to the other through the application of a small electrical charge. In its basic form, a Pettier device consists of four parts: a hot side exchanger, a cold side exchanger, the heat pump and a power source. Pettier devices are relatively small, lightweight solid-state devices with no moving parts to wear out. In addition, reversing the polarity of the applied DC voltage reverses the direction of the heating and cooling, a feature that makes them ideal for controlling temperature or in processes which require both heating and cooling of a medium.
[0004] There have been in the prior art many attempts to use Pettier devices to provide heating or cooling to a garment wearer. For example, U.S. patent no. 4,470,263 discloses the use of Pettier cooling in a garment. Pettier devices are attached to the inside of a garment with the cold plate of the Pettier device in thermal contact with the skin of the wearer of the garment. The preferred garments are headbands and neckbands carrying the Pettier devices.
Heat generated by the Pettier device is dissipated to the ambient from cooling fins. Heat pipes are used to conduct the heat to the fins, or to distribute the cooling across the skin. In a preferred embodiment the Pettier devices are powered by solar battcdries mounted on the brim of a wide-brimmed hat, thus providing a self powered portable unit.
Rechargeable batteries may also be used for powering the Pettier devices.
[0005] In U.S. patent no. 5,655,374, a surgical suit is disclosed, which includes a hood and a gown portion. A housing is spaced above the user°s head and undefneath the hood. A fan is disposed in the housing, as well as an optional Pettier device, to provide a flow of air to cool the worker. Air is drawn into the hood, passed over the cold side of the Pettier device and then circulated into the gown portion.
[0006] U.S. patent no. 5,800,490 teaches an injury pack holder for providing cooling and/or heating therapy to an injury. Incorporated into the pack holder is a thermoelectric assembly containing a Pettier device, a fan, a radiator, and first and second plates.
The assembly transfers heat energy to a gel pack, which cools or heats an area reduiring therapy.
[0007] A personal heat control assembly is disclosed in U.S. patent no.
5,970,718. The assembly includes a cooling surface and a heating surface thermally insulated from the cooling surface and a Pettier device for cooling the cooling surface and heating the heating surface. The Pettier device is in a housing that can be attached to a. part of a person's body with one of the surfaces in contact with the body.
[0008] U.S. patent no. 6,125,63Ei discloses a self contained personal cooling and/or heating device that includes a heat-dissipating member that fits around a portion of the user's body. A
Pettier device is thermally coupled to the rear surface of the member and the rear surface of the Pettier device is provided with a large surface area, preferably augmented by a heat sink.
A fan directs ambient air onto this rear surface or heat sink. When the device is wom, the exposed surface of the heat-dissipating member is placed into contact with the body portion to be cooled or heated.
[0009] U.S. patent no. 6,382,208 teaches a system for controlling the temperature and relative humidity in a respirator. The system includes a Pettier device having a first temperature plate that contacts the interior chamber of the respirator and a second temperature plate that contacts the external environment. Preferably, the plates of the Pettier device include heat exchangers and fans for maximizing its efficiency.
[001 O] There, therefore, remains a need to provide a modular heating or cooling device that can be incorporated into garments to provide better heat management to the wearer.
[OOi 1] The disclosures of all patents/applications referenced herein are incorporated herein by reference.
summary of the Invention:
[0012] The present invention provides a personal heat management system that includes a Pettier device, a radiator and a heat exchanger having one or more tubes.
[0013] According to one aspect ~f the invention there is provided a modular heating or cooling device, comprising:
[0014] (a) a Pettier device having a first side and a second side:, wherein the Pettier device can be operated in two modes: a first mode where the first side is colder and the second side is warmer, and a second mode where thf; first side is warmer and the second side is colder;
[0015] (b) a radiator operatively connected to the second side for dissipating heat to the environment when the Pettier device is operated in the first mode;
[0016] (c) a heat exchanger operatively connected to the first side, the heat exchanger comprising:
[0017] (i) one or more tubes arranged in a side-by-side relationship;
[0018] (ii) a heat exchange fluid in the tubes; and [0019] (iii) a pump operatively connected to inlets and outlets of the tubes fox circulating the heat exchange ftuid in the tubes; and.

[0020] (d) a power source for supplying D.C. electrical power to the Pettier device and the pump.
[0021 ] In a preferred embodiment, the tubes are in a side-by-side spaced apart relationship and are surrounded by and sealed to a first foil so as to maintain the tubes in the spaced apart relationship. In a further embodiment of the invention, the device is adapted for fitting on an interior side of a garment to provide cooling or heating to the interior side.
The garment is preferably a protective apparel such as a protective vest.
[0022] In a further aspect of the present invention, there is provided a garment that provides cooling or heating to a wearer of the garment, comprising:
[0023] (a) an outer layer and an inner layer defining a compartment;
[0024] (b) a Pettier device having a first side and a second side, wherein the Pettier device can be operated in two modes: a first mode where the first side is colder and the second side is warmer, and a second mode where the first side is a warmer and the second side is colder;
[0025] (c) a radiator operatively connected to the second side for dissipating heat to the environment when the Pettier device is operated in the first mode;
[0026] (d) a heat exchanger operatively connected to the first side, the heat exchanger comprising:
[0027] (i) one or more tubes arranged in a side-by-side relationship;
[0028] (ii) a heat exchange fluid in the tubes; anal [0029] (iii) a pump operatively connected to inlets and outlets of the tubes for circulating the heat exchange fluid in the tubes; and [0030] (e) a power source for supplying D.~. electrical power to the Pettier device and the pump, [0031] wherein the Peltier device, heat exchanger and power source are located in the compartment and the radiator is located on an exterior surface of the outer layer.
[0032] Numerous other objectives, advantages and features of the process will also become apparent to the person skilled in the art upon reading the detailed description of the preferred embodiments, the examples and the claims.
Brief Description of the Drawings:
[0033] The preferred embodiments of the present invention will be described with reference to the accompanying drawings in which like numerals refer to the same parts in the several views and in which:
[0034] Fig. 1 is an exploded perspective view of one: preferred embodiment of the modular heating or cooling device of the present invention.
[0035] Fig. 2 illustrates the heating or cooling device of Fig. 1 as seen from the outside of a garment.
[0036] Fig. 3 illustrates the heating or cooling device of Fig. 1 as seen from the inside of a garment.
[0037] Fig. 4 illustrates from a top view the heating and cooling device of Fig. 1 as it is fitted onto a garment.
[0038] Fig. 5 illustrates the heat exchanger of the heating and cooling device of Fig. 1 from a side elevation view.
[0039] Fig. 6 is a cross-sectional side view taken along lines B-B of Fig. 5.
[0040] Fig. 7 is an exploded perspective view of a second preferred embodiment of the heating or cooling device of the present invention.
[0041] Fig. 8 is an illustration in perspective view of the seas of heat exchange tubes useful in the embodiments of Fig. 7.

[0042] Fig. 9 is a detailed end view of a cross section of the sets of heat exchange tubes of Fig. 8.
Detailed Description of the Preferred Embodiments:
[0043] The preferred embodiments of the present invention will now be described with reference to the accompanying figures.
[0044] With reference to Fig. ~, there is shown in exploded perspective view one preferred embodiment of the modular heating or cooling device of the present invention.
The heating or cooling device includes a Peltier device 10 operatively connected to a suitable source of direct current (DC) electrical power (not shown), such as rechargeable batteries, via conducting wires 12. The Pettier device 10 has two primary sides: a first side 14 and a second side 16. The Pettier device 10 is capable of being operated in two opposing modes depending on the polarity of the DC electrical power supplied to it. Tn the first mode, the first side 14 is relatively colder and the second side 16 is relatively warmer. In the second mode, the first side 14 is relatively warmer and the second side 16 is relatively co:(der.
[0045] Adj acent to second side 16 is a radiator 18 preferably made; of aluminum or other suitable material. Radiator 18 comprises a series of integral fins 20, and is operatively connected to second side 16 to act as a heat sink. When the Pettier device ZO
is operated in the first mode, the heat generated at second side 16 can be more easily dissipated to the environment through radiator 18. A r~zbber shield 22 may be provided to house radiator 18.
[0046] Operatively connected to the first side 14 of Pettier device 10 is a heat exchanger, which is generally designated as item 24. Heat exchanger 2.4 comprises a set of tubes 26, which is shown as one tube arranged in a coil so that portions of tubes 26 are in a side-by-side relationship. Tubes 26 contain a suitable heat exchange fluid. A pump 28 is housed in an aluminum case 30. The pump 2,8 is powered by motor 32 and is in fluid communication with inlets and outlets of the tubes 26 to circulate the heat exchange fluid within the tubes 26. The heat exchange fluid is also caused to circulate in close proximity to first side 14 of the Pettier device 10 so that heat transfer between the heat exchange fluid and the first side 14 occurs.
An aluminum case cover 34 is provided to fit over the case 30.

[0047] In a preferred embodiment, the personal heating or cooling device is adapted for use with a garment 36. An opening 38 is provided in garment 36 through which the second side 16 is connected to radiator 18. As such, radiator 18 can be located on the outside of garment 36 to more effcientty dissipate heat to the environment while the Pettier device 10 and heat exchanger 24 are on the inside of the garment 36.
[0048] Fig. 2 illustrates the heating or cooling device as seen from the outside of garment 36.
Radiator 18, which is housed in rubber shield 22, sits on the outside surface of garment 36 so as to better dissipate heat to the environment when the Pettier device 10 is operated in its first mode. The tubes 26 are on the inside of garment 36 and as heat exchange fluid is circulated within the tubes 26, either a heating or a cooling effect is provided inside the garment 36 depending on which mode the Pettier device 10 is operated.
[0049] Fig. 3 illustrates the heating or cooling device as seen from the inside of garment 36, showing the tubes 26, case 30 and case cover 34.
[0050] Fig. 4 shows from a top view the heating and cooling device as it is fitted onto garment 36. Radiator 18 and rubber shield 22 are on one side, typically the outside, of garment 36 whereas Pettier device 10 and tubes 26 are on the other side. The second side 16 of Pettier device 10 is connected to radiator 18 tl~ar-ough an opening in garment 36. When the Pettier device 10 is operated in its first mode, heat is generated at second side 16, which is dissipated to the outside environment via radiator 18. At the same time, first side 14 of Pettier device 10 is cool so that heat is transferred from the heat exchange fluid in tubes 26 to the first side 14, thereby cooling the fluid. As the cooled fluid circulates in the tubes 26, a cooling effect is provided on this side of garment 36.
[0051] Fig. 5 shows the heat exchanger 24 from a side elevation view. The pump in case 30 causes the heat exchange fluid to circulate in tubes 26. As shown i.n Fig. 6, which is a cross-sectionat side view taken along Lines B-B of Fig. 5, portions of tubes 26 are arranged in a side-by-side relationship, and are preferably arranged in a generally parallel configuration.
[0052] A second preferred embodiment of the heating or cooling device of the present invention is shown in exploded view in Fig. 7. 'This second embodiment is similar to the first embodiment shown in Fig. 1-6 in that the Peltier device 10, radiator' 18, fins 20, rubber shield 22, pump 28, case 30, motor 32 and case cover 34 are the same. Pettier device 10 includes a first side 14 and a second side 16, and Pettier device 10 and radiator 18 operate as described above.
[0053] Heat exchanger 40 shown in Fig. 7 is different from the embodiment of Fig. 1-6. It includes a pump 28, a motor 32, a case 30 and a case cover 34, which are also as described above. However, heat exchanger 40 comprises two sets of parallel, spaced apart tubes 42 and 44 that are in fluid communication with each other. One end of the sets of tubes 42 and 44 are in fluid communication via manifolds 46 and 48, and connecting tube 50, while the other end of the sets of tubes 44 and 46 are also in fluid communication via manifolds 52 and 54 and inlet tube 56 and outlet tube S8. Inlet and outlet tubes 56 and 58 are operatively connected to suitable ports on case 30 so that a heat exchange fluid is circulated '6y pump 28 through the rivo sets of tubes 44 and 46.
[0054] Fig. 8 and 9 illustrate the construction of the sets of tubes 44 and 46 useful in the present invention. The sets of tubes preferably comprise a plurality of polymeric tubes 70 arranged in parallel and placed at least 1-1/2 tube diameters apart measured center-to-center.
The tubes 70 are held in place by, surrounded by and sealed to a laaninated foil 72. The foil 72 has two faces 74 and 76; face 74 facing toward the tubes 70, and face 76 facing away from the tubes 70. The foil 72 includes at least one layer of metal. 78 with at Least one polymer layer 80 on at least the side facing the tubes 70. The tubes TG preferably have an inner diameter in the range of O.Smm to 10 mm and a wall thickness in the range of 0.05 mm to 0.3 mm, while the foil 72 has a total thickness preferably in the range of 0.05 mrn to 0.25 mm and a total metal thickness preferably in the range of 0.002 mm to 0.1 rnm. The number of tubes 70 in each of the first and second sets of tubes 18 and 20 is preferably from 5 to 20 tubes.
Each of the tubes 70 may comprise one or more layers of polymer, and preferably the polymer is polyamide. Optionally, the diameters of the tubes 70 are all in one plane.
Examples of such sets of tubes and of how to make such tubes are provided in LJ.S.
published patent application nos. 20030094264 and 20030070752, the specifications of which are hereby incorporated in their entirety by reference.

[0055] Although the present invention has been shown and described with respect to its preferred embodiments and in the examplesy it will be understood by those skilled in the art that other changes, modifications, additions and omissions may be made without departing from the substance and the scope of the present invention as defined by the attached claims.

Claims (18)

1. A modular heating or cooling device, comprising:
(a) a Peltier device having a first side and a second side, wherein the Peltier device can be operated in two modes: a first mode where the first side is colder and the second side is warmer, and a second mode where the first side is warmer and the second side is colder;
(b) a radiator operatively connected to the second side for dissipating heat to the environment when the Peltier device is operated in the first mode;
(c) a heat exchanger operatively connected to the first side, the heat exchanger comprising:
i) one or more tubes in a side-by side relationship;
ii) a heat exchange fluid in the tubes; and iii) a pump operatively connected to inlets and outlets of the tubes for circulating the heat exchange fluid in the tubes; and (d) a power source for supplying D.C. electrical power to the Peltier device and the pump.
2. The device of claim 1, wherein the tubes are in a side-by-side spaced apart relationship and the tubes are surrounded by and sealed to a foil so as to maintain the tubes in the spaced apart relationship.
3. The device of claim 1 or 2, wherein the tubes are parallel to each other.
4. The device of any one of claims 1-3, wherein the foil is a laminated foil comprising at least one layer of metal and at least one polymer layer.
5. The device of any one of claims 1-4, wherein the device is adapted for fitting on an interior side of a garment to provide cooling or heating to the interior side.
6. The device of claim 5, wherein the garment is a protective apparel, preferably a protective vest.
7. The device of claims 5 or 6, wherein the radiator is adapted to be located on an exterior side of the garment.
8. The device of any one of claims 1-7, wherein the diameters of the tubes are in a plane.
9. The device of any one of claims 1-8, wherein the tubes are made of polyamide.
10. A garment that provides cooling or heating to a wearer of the garment, comprising:
(a) an outer layer and an inner layer defining a compartment;
(b) a Peltier device having a first side and a second side, wherein the Peltier device can be operated in two modes, a first mode where the first side is colder and the second side is warmer, and a second mode where the first side is a warmer and the second side is colder;
(c) a radiator operatively connected to the second side for dissipating heat to the environment when the Peltier device is operated in the first mode;
(d) a heat exchanger operatively connected to the first side, the heat exchanger comprising:
i) one or more tubes in a side-by side relationship;
ii) a heat exchange fluid in the tubes; and iii) a pump operatively connected to inlets and outlets of the tubes for circulating the heat exchange fluid in the tubes; and (e) a power source for supplying D.C. electrical power to the Peltier device and the pump, wherein the Peltier device, heat exchanger and power source are located in the compartment and the radiator is located on an exterior surface of the outer layer.
11. The garment of claim 10, wherein the tubes are in a side-by-side spaced apart relationship and the tubes are surrounded by and sealed to a foil so as to maintain the tubes in the spaced apart relationship.
12. The garment of claim 10 or 11, wherein the tubes are parallel to each other.
13. The garment of any one of claims 10-12, wherein the foil is a laminated foil comprising at least one layer of metal and at least one polymer layer.
14. The garment of any one of claims 10-13, wherein the device is adapted for fitting on an interior side of a garment to provide cooling or heating to the interior side.
15. The garment of claim 14, wherein the garment is a protective apparel, preferably a protective vest.
16. The garment of claims 14 or 15, wherein the radiator is adapted to be located on an exterior side of the garment.
17. The garment of any one of claims 10-16, wherein the diameters of the tubes are in a plane.
18. The garment of any one of claims 10-17, wherein the tubes are made of polyamide.
CA002432860A 2003-06-16 2003-06-16 Distributed electronic personal heat management system Abandoned CA2432860A1 (en)

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CA002432860A CA2432860A1 (en) 2003-06-16 2003-06-16 Distributed electronic personal heat management system
PCT/CA2004/000889 WO2004111741A1 (en) 2003-06-16 2004-06-16 Modular thermoelectric personal heat management system

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