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US 12,313,294 B2Granted
PTC heater
AssigneeBestway Inflatables & Material Corp.
InventorsFeng Liu, Xianglin Zeng, Qingshui Song, Jiang Xu
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.
Claims20
A heating unit comprising:
- a heat conductor comprising:
- a liquid passage channel formed in a lengthwise direction through the heat conductor, wherein the heat conductor is configured to flow liquid horizontally through the liquid passage channel in the lengthwise direction, such that the lengthwise direction is horizontal during passage of the liquid, and
- a duct formed in the lengthwise direction through the heat conductor;
- a positive temperature coefficient (PTC) heating element disposed in the lengthwise direction within the duct, at least a first end of the PTC heating element being coplanar with a first end of the heat conductor and disposed within the duct;
- an end cover coupled to the first end of the heat conductor and comprising a space therein configured to accommodate a second end of the PTC heating element;
- and
- a sealing gasket disposed around an opening of the duct between the end cover and the first end of the heat conductor.
4 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 comprising a first portion disposed in the lengthwise direction within the duct and a second portion extending from the duct in the lengthwise direction 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 being 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
- wherein the heat conductor is configured to flow liquid horizontally through the liquid passage channel in the lengthwise direction, such that the lengthwise direction is horizontal during passage of the liquid.
5 more elements
A heating unit comprising:
- a heat conductor comprising:
- a liquid passage channel formed in a lengthwise direction through the heat conductor, wherein the heat conductor is configured to flow liquid horizontally through the liquid passage channel in the lengthwise direction, such that the lengthwise direction is horizontal during passage of the liquid, and
- a duct formed in the lengthwise direction through the heat conductor;
- a positive temperature coefficient (PTC) heating element comprising a first portion disposed in the lengthwise direction within the duct and configured to generate heat;
- an end cover coupled to a first end of the heat conductor and comprising a space therein configured to accommodate a second portion of the PTC heating element;
- and
- a sealing gasket disposed around an opening of the duct between the end cover and the first end of the heat conductor.
4 more elements
A heating unit comprising:
- a heat conductor comprising:
- a liquid passage channel formed in a lengthwise direction through the heat conductor, wherein the heat conductor is configured to flow liquid horizontally through the liquid passage channel in the lengthwise direction, such that the lengthwise direction is horizontal during passage of the liquid, and
- a duct formed in the lengthwise direction through the heat conductor;
- a positive temperature coefficient (PTC) heating element comprising a first portion disposed in the lengthwise direction within the duct;
- and
- an end cover coupled to a first end of the heat conductor and comprising a groove therein defining a space configured to accommodate a second portion of the PTC heating element extending in the lengthwise direction 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.
4 more elements
Dependencies are inferred from the claim text.