Flow through heater

Patent metadata

Field	Value
Publication number	US-10507274-B2
Application number	US-201615339112-A
Country	US
Kind code	B2
Filing date	Oct 31, 2016
Priority date	Apr 28, 2010
Publication date	Dec 17, 2019
Grant date	Dec 17, 2019

Abstract

An electrical heating device for medical equipment is provided. The electrical heating device includes a conducting body forming a channel therethrough for fluid travel, a base dielectric layer disposed on the conducting body, a heater surrounding the base dielectric layer and the conducting body, a top dielectric layer disposed on the heater, and a protection housing that is preformed and that defines a cavity to receive the top dielectric layer and the heater in the cavity. The base dielectric layer and the top dielectric layer jointly enclose the heater. At least one of the base dielectric layer and the top dielectric layer has a radial portion at a side of the heater such that the radial portion surrounds a portion of the base layer dielectric that is sandwiched between the heater and the conducting body and no portion of the heater is exposed from the base dielectric layer and the top dielectric layer. The protection housing defines side pieces that are in direct contact with the conducting body.

First claim

What is claimed is:

1. An electrical heating device for medical equipment, the electrical heating device comprising:
a conducting body that is electrically conductive and that forms a channel therethrough for fluid travel;
a base dielectric layer disposed on the conducting body;
a heater surrounding the base dielectric layer and the conducting body;
a top dielectric layer disposed on the heater; and
a protection housing that is preformed and that defines a cavity to receive the top dielectric layer and the heater in the cavity, the base dielectric layer and the top dielectric layer jointly enclosing the heater such that
no portion of the heater is exposed from the base dielectric layer and the top dielectric layer, wherein the protection housing defines side pieces that are in direct contact with the conducting body.

2. The electrical heating device according to claim 1 , wherein the heater being formed by a layering process.

3. The electrical heating device according to claim 1 , wherein the protection housing is electrically conductive.

4. The electrical heating device according to claim 3 , wherein the protection housing cooperates with the conducting body to encapsulate the base dielectric layer, the heater, and the top dielectric layer.

5. The electrical heating device according to claim 4 , further comprising an electrically and thermally insulating compound disposed around the top dielectric layer, the compound being encapsulated by the protection housing and the conducting body.

6. An electrical heating device comprising:
a body;
a base layer dielectric disposed proximate the body;
a heater disposed proximate the base layer dielectric;
a top dielectric layer disposed proximate the heater; and
a protection housing that is preformed and that defines a cavity to receive the heater, the top dielectric layer and the base layer dielectric,
wherein the base layer dielectric and the top dielectric layer cooperate to encapsulate the heater such that no portion of the heater is exposed from the base layer dielectric and the top dielectric layer, the base layer dielectric and the top dielectric layer being disposed within the cavity of the protection housing, and the protection housing defining side pieces that are in direct contact with the body.

7. The electrical heating device according to claim 6 , wherein at least one of the base dielectric layer, the top dielectric layer, and the heater are formed by a layering process.

8. The electrical heating device according to claim 6 , further comprising an electrically and thermally insulating compound disposed within the protection housing and surrounding the heater, the top dielectric layer, and the base layer dielectric.

9. The electrical heating device according to claim 6 , wherein the body forms a channel therethrough for fluid travel.

10. The electrical heating device according to claim 6 , wherein the body is flat.

11. The electrical heating device according to claim 6 , further comprising a plurality of channels formed through the body proximate the insulating material.

12. An electrical heating device for medical equipment, the electrical heating device comprising:
a conducting body that is electrically conductive and that forms a channel therethrough for fluid travel;
a tubular outer portion that is preformed and that that surrounds the conducting body;
side pieces that connect opposing ends of the tubular outer portion and opposing ends of the conducting body to define an annular cavity between the conducting body, the tubular outer portion and the side pieces;
a heater disposed in the cavity;
a base dielectric layer and a top dielectric layer that sandwich the heater therebetween and that completely enclose the heater therein such that no part of the heater is exposed from the base dielectric layer and the top dielectric layer.

13. The electrical heating device according to claim 12 , further comprising an electrically and thermally insulating compound disposed in the annular cavity and surrounding the top dielectric layer.

14. The electrical heating device according to claim 13 , wherein the electrically and thermally insulating compound is in direct contact with the side pieces and the top dielectric layer.

15. The electrical heating device according to claim 12 , wherein the side pieces are separate components from the tubular outer portion.

16. The electrical heating device according to claim 12 , wherein the side pieces are welded to the tubular outer portion.

17. The electrical heating device according to claim 12 , wherein the side pieces are fixed to the conducting body.

18. The electrically heating device according to claim 12 , wherein the side pieces are welded to the conducting body.

19. The electrical heating device according to claim 12 , wherein the tubular outer portion and the side pieces are made of an electrically conducting material.

20. The electrical heating device according to claim 12 , wherein the heater is formed by a layering process.

Assignees

• Watlow Electric Mfg

Inventors

• Wallinger Martin
• Antosch Gernot
• Lehnert Reiner
• Pöschl Wolfgang
• Schefbänke Gerhard

Classifications

• H05B3/58

  Heating hoses; Heating collars · CPC title

• A61F7/007

  characterised by electric heating · CPC title

• H05B2203/021

  Heaters specially adapted for heating liquids · CPC title

• A61M5/44 Primary

  having means for cooling or heating the devices or media · CPC title

• H05B3/40

  Heating elements having the shape of rods or tubes (H05B3/62, H05B3/68, H05B3/78 take precedence) · CPC title