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US 12,372,271 B2Granted
PTC heater
AssigneeBestway Inflatables & Materials Corp.
InventorFeng Liu
Life of this patent
Estimating the term…
Abstract
A heating apparatus is disclosed. The heating apparatus comprises a PTC heating element, a first electrode, a second electrode, a first protection layer, a second protection layer, a first interlayer, and a second interlayer. A hardness of the first protection layer is greater than that of the first interlayer. A hardness of the second protection layer is greater than that of the second interlayer.
Claims16
A heating unit comprising:
- a heat conductor comprising a liquid passage channel formed in a lengthwise direction through the heat conductor, and a duct formed in the lengthwise direction through the heat conductor;
- a positive temperature coefficient (PTC) heating element disposed within the duct, at least a first end of the PTC heating element being coplanar with a first end of the heat conductor;
- an end cover coupled to the first end of the heat conductor;
- and
- a sealing gasket disposed around an opening of the duct between the end cover and the first end of the heat conductor.
2 more elements
A heating unit comprising:
- a heat conductor comprising a liquid passage channel formed through the heat conductor, and a duct formed through the heat conductor;
- a positive temperature coefficient (PTC) heating element comprising a first portion disposed within the duct and a second portion extending from the duct at a first end of the heat conductor, both the first portion of the PTC heating element and the second portion of the PTC heating element configured to generate heat;
- and
- an end cover coupled to the first end of the heat conductor and comprising a space therein configured to accommodate the second portion of the PTC heating element.
1 more element
A heating unit comprising:
- a heat conductor comprising a liquid passage channel formed through the heat conductor, and a duct formed through the heat conductor;
- a positive temperature coefficient (PTC) heating element disposed within the duct and configured to generate heat;
- an end cover coupled to a first end of the heat conductor;
- and
- a sealing gasket disposed around an opening of the duct between the end cover and the first end of the heat conductor.
2 more elements
A heating unit comprising:
- a heat conductor comprising a liquid passage channel formed in a lengthwise direction through the heat conductor, and a duct formed in the lengthwise direction through the heat conductor;
- a positive temperature coefficient (PTC) heating element disposed within the duct;
- and
- an end cover coupled to a first end of the heat conductor and comprising a groove therein configured to accommodate a portion of the PTC heating element extending from the first end of the heat conductor;
- wherein the groove extends in a direction substantially orthogonal to the lengthwise direction and is in communication with a space external to the heat conductor.
2 more elements
Dependencies are inferred from the claim text.