Sealed heater engine for a wax warmer

Patent metadata

Field	Value
Publication number	US-11207437-B2
Application number	US-201615044019-A
Country	US
Kind code	B2
Filing date	Feb 15, 2016
Priority date	Feb 15, 2016
Publication date	Dec 28, 2021
Grant date	Dec 28, 2021

Abstract

A wax warmer includes a reservoir for receiving a wax melt, a housing defining an interior volume and configured to receive the reservoir, and a hermetically sealed heater engine positioned within the interior volume and in thermal contact with the reservoir.

First claim

We claim:

1. A warmer, comprising:
a reservoir for receiving a melt, the reservoir defining uninterrupted bottom and side walls;
a housing defining an interior volume and configured to receive the reservoir, wherein the housing includes an upper portion and a lower portion, and wherein the upper portion is retained securely on the lower portion by a plurality of retention tubes; and
a sealed heater engine comprising a second housing with a heater disposed therein, and positioned within the interior volume, the second housing being in thermal contact with the reservoir, wherein the sealed heater engine includes a seal having an ultrasonically welded portion that prevents the ingress of liquids into the sealed heater engine.

2. The warmer of claim 1 , wherein the second housing of the sealed heater engine comprises a top cover and a base, and wherein a combination of an o-ring seal, a wire seal, the top cover, and the base results in the sealed heater engine exceeding the water resistant standards of UL 283.

3. The warmer of claim 2 , wherein the upper portion and the lower portion are sealed to prevent the ingress of water, and a seal is formed between the upper portion and the lower portion that includes an ultrasonically welded portion.

4. The warmer of claim 3 , wherein the sealed heater engine includes the o-ring positioned between the top cover and the base.

5. The warmer of claim 4 , wherein the sealed heater engine further includes the top cover and the base joined by the ultrasonically welded portion.

6. The warmer of claim 1 , wherein the sealed heater engine includes the heater encapsulated in thermal potting material.

7. The warmer of claim 6 , wherein the sealed heater engine further includes a sealed pass through for an electrical connection.

8. The warmer of claim 3 , wherein the reservoir includes a channel configured to couple to the upper portion of the housing.

9. The warmer of claim 8 , wherein the channel of the reservoir forms a water resistant seal when coupled to the upper portion of the housing.

10. A warmer, comprising:
a reservoir for receiving a melt;
a housing including an upper portion and a lower portion that define an interior volume, wherein the upper portion is configured to receive the reservoir and the reservoir is positioned within the interior volume; and
electrical components comprising at least a sealed heater engine comprising a second housing with a heater disposed therein and positioned within the interior volume, the second housing being in thermal contact with the reservoir,
wherein the sealed heater engine includes a seal having an ultrasonically welded portion to prevent liquids from reaching an interior of the sealed heater engine, and
wherein the electrical components are disposed entirely below a bottommost wall of the reservoir.

11. The warmer of claim 10 , wherein the second housing of the sealed heater engine comprises a top cover and a base, and wherein the seal includes at least an o-ring positioned between the top cover and the base and a pass through seal.

12. The warmer of claim 11 , wherein the ultrasonically welded portion of the seal joins the top cover to the base.

13. The warmer of claim 12 , wherein the seal allows the warmer to meet or exceed the water resistant standards of UL 283.

14. A warmer, comprising:
a reservoir for receiving a melt, the reservoir defining uninterrupted bottom and side walls;
a housing defining an interior volume and configured to receive the reservoir, wherein the housing includes an upper portion and a lower portion, and wherein the upper portion includes a plurality of retention cylinders that cooperate with a plurality of retention tubes in the lower portion to secure the upper portion to the lower portion;
a power cord;
a sealed heater engine comprising a second housing with a heater disposed therein, and positioned within the interior volume, the second housing being in thermal contact with the reservoir, wherein the sealed heater engine includes a seal having an ultrasonically welded portion that prevents the ingress of liquids into the sealed heater engine; and
wherein the housing defines an opening to receive the power cord.

15. The warmer of claim 14 , wherein the upper portion and the lower portion that are sealed to prevent the ingress of water, and a seal is formed between the upper portion and the lower portion that includes an ultrasonically welded portion.

16. The warmer of claim 14 , wherein the second housing of the sealed heater engine comprises a top cover and a base, and wherein the sealed heater engine includes at least an o-ring positioned between the top cover and the base.

17. The warmer of claim 16 , wherein the sealed heater engine further includes the top cover and the base joined by the ultrasonically welded portion.

18. The warmer of claim 14 , wherein the sealed heater engine includes the heater encapsulated in thermal potting material.

19. The warmer of claim 17 , wherein the sealed heater engine further includes a sealed pass through for an electrical connection.

20. The warmer of claim 19 , wherein the sealed heater engine formed by the o-ring, the top cover, the base, and the sealed pass through exceeds the water resistant standards of UL 283.

Assignees

• Johnson & Son Inc S C

Inventors

• Faterioun Kamran
• Beaumont Dennis Jon
• Filiczkowski John Thaddeus

Classifications

• A61L2209/135

  Vaporisers for active components · CPC title

• A61L9/03 Primary

  Apparatus therefor · CPC title

• H05B3/42

  non-flexible · CPC title

• H05B2203/014

  Heaters using resistive wires or cables not provided for in H05B3/54 · CPC title

• H05B2203/021

  Heaters specially adapted for heating liquids · CPC title