Hybrid heater for vehicle

Patent metadata

Field	Value
Publication number	US-10060649-B2
Application number	US-201414532830-A
Country	US
Kind code	B2
Filing date	Nov 4, 2014
Priority date	Jun 19, 2014
Publication date	Aug 28, 2018
Grant date	Aug 28, 2018

Abstract

A hybrid heater includes a heater core portion connected to a cooling water inflow tube and a cooling water outflow tube at one side and having an inside through which cooling water circulates, and a PTC heater portion fastened to a front of the heater core portion, inside of which a plurality of plate-type PTC rods arranged in parallel in a horizontal direction are provided, and provided at one side with a connector that is connected electrically to the plurality of PTC rods.

First claim

What is claimed is:

1. A hybrid heater, comprising:
a heater core portion connected to a cooling water inflow tube and a cooling water outflow tube at one side and having an inside through which cooling water circulates;
a Positive Temperature Coefficient (PTC) heater portion fastened to a front of the heater core portion, inside of which a plurality of plate-type PTC rods arranged in parallel in a horizontal direction are provided, and provided at one side with a connector that is connected electrically to the plurality of plate-type PTC rods; and
a plurality of plate-type pins made of heat conductive material,
wherein the plurality of plate-type pins is arranged in parallel at each of the plurality of plate-type PTC rods by crossing at a right angle to the plurality of plate-type PTC rods,
wherein a through-hole is formed at a center of each of the plate-type pins and the plurality of plate-type pins are fitted into the each of the plurality of plate-type PTC rods in sequence along a longitudinal direction of the each of the plurality of plate-type PTC rods through the through-hole to be assembled, and
wherein the each of the plurality of plate-type PTC rods is tapered in a longitudinal direction thereof such that a sectional area of a first end of the each of the plurality of plate-type PTC rods is greater than a sectional area of the through-hole of the each of the plurality of plate-type pins, and such that a sectional area of a second end of each of the plurality of PTC rods is smaller than the sectional area of the through-hole of the each of the plurality of plate-type pins.

2. The hybrid heater of claim 1 , wherein header tanks are provided on upper and lower ends of the heater core portion, respectively, a first header tank and a second header tank of the header tanks are connected through cooling water tubes arranged in parallel in a vertical direction and the plate-type PTC rods and the cooling water tubes are arranged to cross at right angles.

3. The hybrid heater of claim 1 , wherein bending portions are formed on first and second ends of the each of the plate-type pins, respectively, and each bending portion of the each of the plate-type pins is in close contact with an end of an adjacent plate-type pin.

4. The hybrid heater of claim 1 , wherein the each of the plate-type PCT rods is arranged in a horizontal direction, the each of the plate-type pins is arranged in a vertical direction, the bending portions are formed on upper and lower ends of the each of the plate-type pins, one bending portion of the each of the plate-type pins is in close contact with an upper end or a lower end of an adjacent plate-type pin, and a space for wind passing through is formed between adjacent plate-type pins.

5. The hybrid heater of claim 1 , wherein beads are formed to be protruded at one side of the each of the plate-type pins.

6. The hybrid heater of claim 1 , wherein a lateral length of the plate-type PTC rods in a horizontal direction is longer than a vertical length thereof in a vertical direction at a cross section cut in a wind flow direction.

7. The hybrid heater of claim 1 , wherein fastening portions are provided on upper and lower ends of one side of the PTC heater portion, respectively, and a first end of each of the fastening portions is formed in a hook shape to be protruded onto the one side of the heater core portion at a rear side and coupled to the inflow tube and the outflow tube that are connected to upper and lower ends of the heater core portion in a shape of surrounding the inflow tube and the outflow tube, respectively, when pressurized.

8. The hybrid heater of claim 7 , wherein a first connection portion is formed on a second end of each of the fastening portions, a second connection portion is formed on the upper and lower ends of the one side of the PTC heater portion, and the each of the fastening portions and the PTC heater portion are detached through the first connection portion and the second connection portion.

9. The hybrid heater of claim 1 , wherein the each of the PTC rods consists of a plate-shape PTC element that heats by receiving electricity and a protection bar that is made of heat conductive material and surrounds and protects the PTC element.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp

Inventors

• Kim Myung Hoe
• Kim In Gyu
• Kim Jong Chul

Classifications

• F24H3/0429 Primary

  For vehicles · CPC title

• F24H3/12

  with additional heating arrangements · CPC title

• F24D2200/08

  Electric heater · CPC title

• H05B3/24

  heating conductor being self-supporting · CPC title

• F24H9/1872

  PTC resistor · CPC title