Modular heat exchanger

• US 6,392,206 B1
• Filed: 08/04/2000
• Issued: 05/21/2002
• Est. Priority Date: 04/07/2000
• Status: Expired due to Term

• Current Assignee: Watlow Electric Manufacturing Company
• Original Assignee: Waltow Polymer Technologies
• Inventors: Von Arx, Theodore, Laken, Keith
• Primary Examiner(s): PAIK, SANG YEOP
• Application Number:
  US09/633,179
• Time in Patent Office: 655 Days
• Field of Search: 219/522, 219/523, 219/534, 219/535, 219/540, 219/543, 219/544, 219/546, 219/547, 219/548, 219/552, 219/553, 219/465.1, 219/466.1, 219/467.1, 219/468.1, 219/468.2, 392/450, 392/451, 392/454, 392/455, 392/465, 392/466, 392/467, 392/485, 392/486, 392/487, 392/488, 392/489, 392/490, 392/491, 392/500, 392/503
• US Class Current: 219/468.1
• CPC Class Codes: A47G 19/2288 with means for keeping liquid cool or hot
• CPC Class Codes: A47J 27/004 with integral electrical heating means drinking cups with integral heating means A47J36/2466
• CPC Class Codes: A47J 27/2105 of the cordless type, i.e. whereby the water vessel can be plugged into an electrically-powered base element
• CPC Class Codes: A47J 36/2461 with electrical heating means
• CPC Class Codes: F24H 1/102 with resistance
• CPC Class Codes: H05B 2203/002 Heaters using a particular layout for the resistive material or resistive elements
• CPC Class Codes: H05B 2203/003 using serpentine layout
• CPC Class Codes: H05B 2203/014 Heaters using resistive wires or cables not provided for in H05B3/54
• CPC Class Codes: H05B 3/00 Ohmic-resistance heating
• CPC Class Codes: H05B 3/18 the conductor being embedded in an insulating material
• CPC Class Codes: H05B 3/26 heating conductor mounted on insulating base for transparent areas H05B3/84, H05B3/86
• CPC Class Codes: H05B 3/28 heating conductor embedded in insulating material

Abstract

A modular fluid heating apparatus may be assembled from a plurality of modular heating components. Each modular heating component includes a first molded section defining a first opening therethrough and a second molded section defining a second opening therethrough. The molded sections are mated and define an enclosed area between the molded sections. The first and second openings are aligned to form a fluid tight passage through the modular heating component. A resistance heating element is secured between the first and second molded sections in the enclosed area. The resistance heating element includes a supporting substrate having a first surface thereon and an electrical resistance heating material fastened to the first surface of the supporting substrate. The resistance heating material forms a predetermined circuit path having a pair of terminal end portions fixed to a pair of electrical connectors. The modular heating components are sealably mated to define a fluid collection area between adjacent modular heating components where a passage of a first modular heating component provides and inlet to the collection area for a fluid and a passage of a second modular component provides an outlet from the collection area. The passages are misaligned 180° to direct the fluid passing through the fluid heating apparatus into at least a portion of the collection area as the fluid passes from the inlet to the outlet of the collection area.

Claims

1. A modular heating component, comprising:

(a) a first molded section defining a first opening therethrough;

(b) a second molded section defining a second opening therethrough and mated to said first molded section, said first and second molded sections mated to define an enclosed area between said molded sections, said first and second openings aligned to form a fluid-tight passage through said modular heating component; and

(c) an electrical resistance heating material secured between said first and second molded sections in said enclosed area, said electrical resistance heating material forming a predetermined circuit path having a pair of terminal end portions,

wherein said modular heating component is defined by a top and bottom surfaces and at least one of said first or second molded sections is shaped to define at least a part of a fluid collection area on said top or bottom surface of said modular heating component.

2. The modular heating component of claim 1, wherein said electrical resistance heating material is fastened to a first surface of a supporting substrate, said modular heating component further comprising a pair of electrical connectors fixed to said terminal end portions.

3. The modular heating component of claim 2, further comprising a second supporting substrate having a first surface thereon, said predetermined circuit path continuing onto and fastened to said first surface of said second supporting substrate, said supporting substrates disposed such that said first surfaces face opposing directions.

4. The modular heating component of claim 3, wherein said supporting substrates are affixed to each other at a joint.

5. The modular heating component of claim 2, wherein said electrical resistance heating material is glued, sewn, fused, or a combination thereof to said supporting substrate.

6. The modular heating component of claim 2, wherein a secondary device is fastened to said supporting substrate.

7. The modular heating component of claim 1, wherein said first and second molded sections are sonic welded, solvent welded, hot plate welded, spin welded, or induction welded together, or combination thereof.

8. The modular heating component of claim 1, wherein said first or second molded section defining said fluid collection area includes a fluid baffle protruding from said molded section and into said fluid collection area.

9. The modular heating component of claim 1, wherein said modular heating component is marked to identify said component'"'"'s heating parameters.

10. The modular heating component of claim 1, further comprising at least one electrical lead in electrical communication with said circuit path at a point between said terminal end portions, such that the resistance of said circuit path between said terminal end portions differs from the resistance of a portion of said circuit path defined between one of said terminal end portions and said electrical lead.

11. The modular heating component of claim 1, wherein said modular heating component is defined by a top and bottom surfaces, said modular heating component further comprising a seal affixed to at least one of said top and bottom surfaces and a plurality of threads disposed on said top and bottom surfaces for mating with a plurality of complimentary threads of a second modular heating component.

12. A stack of modular heating components comprising:

a plurality of modular heating components, each of said modular heating components comprising;

(a) a first molded section defining a first opening therethrough;

(b) a second molded section defining a second opening therethrough and mated to said first molded section, said first and second molded sections mated to define an enclosed area between said molded sections, said first and second openings aligned to form a fluid-tight passage through said modular heating component;

(c) an electrical resistance heating material secured between said first and second molded sections in said enclosed area, said electrical resistance heating material forming a predetermined circuit path having a pair of terminal end portions; and

(d) a pair of electrical connectors fixed to said terminal end portions,

wherein said modular heating components are sealably mated to define a fluid collection area between adjacent modular heating components, a passage of a first modular heating component providing an inlet into said collection area and a passage of a second modular heating component providing an outlet from said collection area, said passages directing a fluid passing through said stack into at least a portion of said collection area as said fluid passes from said inlet to said outlet of said collection area.

13. The stack of claim 12, wherein said electrical resistance heating material is fastened to a first surface of a supporting substrate.

14. The stack of claim 13, wherein said electrical resistance heating element further comprises a second supporting substrate having a first surface thereon, said predetermined circuit path continuing onto and fastened to said first surface of said second supporting substrate, said supporting substrates disposed such that said first surfaces face opposing directions.

15. The stack of claim 14, wherein said supporting substrates are affixed to each other at a joint.

16. The stack of claim 13, wherein said electrical resistance heating material is glued, sewn, fastened, or a combination thereof to said supporting substrate.

17. The stack of claim 12, further comprising a first electrical conductor contacting a first one of said electrical connectors of each modular heating component and a second electrical conductor contacting a second one of said electrical connectors of each modular heating component.

18. The stack of claim 17, wherein said circuit paths of at least two of said modular heating components have different resistances such that said modular heating components produce different wattage outputs when said electrical conductors are coupled to a power source.

19. The stack of claim 18, wherein said electrical conductors are conducting pins disposed in a first and second passage extending through said assembly.

20. The stack of claim 12, further comprising a plurality of electrical conductors contacting said electrical connectors, said electrical connectors and electrical conductors oriented such that a plurality of said circuit paths may be energized independently of each other.

21. The stack of claim 12, further comprising a secondary device modular component mated to at least one modular heating component, said secondary device modular component including a first molded section defining a first opening therethrough, a second molded section defining a second opening therethrough and mated to said first molded section, said first and second molded sections mated to define an enclosed area between said molded sections, said first and second openings aligned to form a fluid-tight passage through said modular heating component, and a temperature sensor, current regulating device, data collection device, or temperature control device secured between said molded sections in said enclosed area, said temperature sensor, current regulating device, data collection device, or temperature control device including a pair of electrical connectors.

22. The stack of claim 12, wherein said passages are misaligned to direct a fluid passing through said stack into at least a portion of said collection area.

23. The stack of claim 22, wherein said passages are misaligned 180°

.

24. The stack of claim 12, wherein said first and second molded sections are sonic welded, solvent welded, hot plate welded, spin welded, or induction welded together, or combination thereof.

25. The stack of claim 12, further comprising an input cap sealably affixed to a first end of said stack, said input cap defining an input passage to said stack, and an output cap sealably affixed to a second end of said stack, said output cap defining an output passage from said stack.

26. The stack of claim 12, wherein said fluid collection area includes a fluid baffle, said fluid baffle distributing said fluid flowing through said fluid collection area.

27. The stack of claim 12, wherein each of said modular heating components is defined by a top and bottom surfaces, said modular heating components further comprising a seal affixed to at least one of said top and bottom surfaces and a plurality of complimentary threads disposed on said top and bottom surfaces, a first and second mating modular heating components of said stack threadably mated such that said seal is secured between a top surface of said first mating modular heating component and a bottom surface of said second mating modular heating component.

28. A modualr fluid heating apparatus, comprising:

an assembly of modular heating components comprising;

a plurality of modular heating components, each of said modular heating components comprising;

(a) a first molded section defining a first opening therethrough;

(b) a second molded section defining a second opening therethrough and mated to said first molded section, said first and second molded sections mated to define an enclosed area between said molded sections, said first and second openings aligned to form a fluid tight passage through said modular heating component; and

(c) a resistance heating element secured between said first and second molded sections in said enclosed area, said resistance heating element comprising;

(i) a supporting substrate having a first surface thereon;

(ii) an electrical resistance heating material fastened to said first surface of said supporting substrate, said resistance heating material forming a predetermined circuit path having a pair of terminal end portions; and

(iii) a pair of electrical connectors fixed to said terminal end portions, said modular heating components sealably mated to define a fluid collection area between adjacent modular heating components, a passage of a first modular heating component providing an inlet into said collection area and a passage of a second modular heating component providing an outlet from said collection area, said passages being misaligned to direct a fluid passing through said assembly into at least a portion of said collection area as said fluid passes from said inlet to said outlet of said collection area;

a plurality of electrical conductors coupled to said electrical connectors;

an input cap sealably affixed to a first end of said assembly, said input cap defining an input passage to said assembly; and

an output cap sealably affixed to a second end of said assembly, said output cap defining an output passage from said assembly.

29. The modular fluid heating apparatus of claim 28, wherein said modular heating components are sonic welded, solvent welded, hot plate welded, spin welded, or induction welded together, or combination thereof.

30. The modular fluid heating apparatus of claim 28, wherein said resistance heating element further comprises a second supporting substrate having a first surface thereon, said predetermined circuit path continuing onto and fastened to said first surface of said second supporting substrate, said supporting substrates disposed such that said first surfaces face opposing directions.

31. The modular fluid heating apparatus of claim 28, wherein said supporting substrates are affixed to each other at a joint.

32. The modular fluid heating apparatus of claim 28, wherein said electrical conductors are conducting pins disposed in a first and second passage extending through said assembly.

33. The modular fluid heating apparatus of claim 32, wherein said pins comprise nickel.

34. The modular fluid heating apparatus of claim 28, wherein said circuit paths of at least two of said modular heating components have different resistances, such that said modular heating components produce different wattage outputs when said electrical conductors are coupled to a power source.

35. The modular fluid heating apparatus of claim 28, wherein said electrical connectors and electrical conductors are oriented such that a plurality of said circuit paths may be energized independently of each other.

36. The modular fluid heating apparatus of claim 28, further comprising a secondary device modular component mated to at least one modular heating component, said secondary device modular component including a first molded section defining a first opening therethrough, a second molded section defining a second opening therethrough and mated to said first molded section, said first and second molded sections mated to define an enclosed area between said molded sections, said first and second openings aligned to form a fluid-tight passage through said modular heating component, and a temperature sensor, current regulating device, data collection device, or temperature control device secured between said molded section in said enclosed area, said temperature sensor, current regulating device, data collection device, or temperature control device including a pair of electrical connectors.

37. The modular fluid heating apparatus of claim 28, wherein each of said modular heating components is defined by a top and bottom surfaces, said modular heating components further comprising a seal affixed to at least one of said top and bottom surfaces and a plurality of complimentary threads disposed on said top and bottom surfaces, a first and second mating modular heating components of said stack threadably mated such that said seal is secured between a top surface of said first mating modular heating component and a bottom surface of said second mating modular heating component.