# US 11,452,179 B2 · Heating rod and heater having same

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- Number: US 11,452,179 B2
- Document ID: US11452179B2
- Status: Granted
- Kind: B2
- Application number: 16/475,902
- Filed: 2018-01-05
- Published: 2019-11-14
- Granted: 2022-09-20
- Earliest claimed: 2017-01-06
- Assignees: LG Innotek Co., Ltd.
- Applicants: LG Innotek Co., Ltd.
- Inventors: Dong Hwa Lee; In Seong Sohn; In Jae Lee
- Web page: https://patentgrep.com/patent/US11452179B2

## CPC

- H05B 3/26: heating conductor mounted on insulating base {(for transparent areas H05B3/84, H05B3/86)}
- H05B 3/50: heating conductor arranged in metal tubes, the radiating surface having heat-conducting fins
- B60H 1/00457: {Ventilation unit, e.g. combined with a radiator (control systems for ventilators B60H1/00828)}
- B60H 1/2225: {arrangements of electric heaters for heating air}
- B60H 1/2226: {Electric heaters using radiation}
- H05B 1/0236: {for vehicles}
- H05B 3/03: Electrodes
- H05B 3/18: the conductor being embedded in an insulating material
- H05B 3/46: heating conductor mounted on insulating base
- H05B 2203/023: Heaters of the type used for electrically heating the air blown in a vehicle compartment by the vehicle heating system
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- B60H: ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES

## Abstract

An embodiment discloses a heating rod comprising: a ceramic substrate; and a heat-radiating element that is arranged in the ceramic substrate, wherein the ratio of the thickness of the ceramic substrate to the thickness of the heat-radiating element is between 1:2 and 1:50. The embodiment discloses a heater comprising: a case; a heat-radiating module that is arranged inside the case; and a power module that is electrically connected to the heat-radiating module, wherein the power module includes a substrate part, a heat sink that is connected to the substrate part, and a ventilation part through which a fluid flows in and out to/from the heat sink.

## Claims

### Claim 1

A heating rod comprising:
a ceramic substrate;
a heat-radiating element disposed in the ceramic substrate;
a first electrode terminal electrically connected to one end of the heat-radiating element; and
a second electrode terminal electrically connected to an opposite end of the heat-radiating element,
wherein a ratio of a thickness of the heat-radiating element to a thickness of the ceramic substrate is in a range of 1:2 to 1:50,
wherein the heat-radiating element is convex alternately in a 1-1 direction and a 1-2 direction of the ceramic substrate, and
wherein the 1-1 direction is from the heat-radiating element toward one surface of the ceramic substrate, and the 1-2 direction is from the heat-radiating element toward an opposite surface of the ceramic substrate.

### Claim 2 (depends on 1)

The heating rod of claim 1, further comprising a heat diffusion plate disposed on at least one of an upper portion and a lower portion of the ceramic substrate.

### Claim 3 (depends on 2)

The heating rod of claim 2, wherein the heat diffusion plate comprises:
a first heat diffusion plate disposed on one side of the ceramic substrate; and
a second heat diffusion plate disposed an opposite side of the ceramic substrate.

### Claim 4 (depends on 3)

The heating rod of claim 3, wherein the ceramic substrate is disposed between the first heat diffusion plate and the second heat diffusion plate, and
wherein the heat-radiating element is disposed between a first thermal diffusion plate and a second thermal diffusion plate.

### Claim 5 (depends on 3)

The heating rod of claim 3, wherein the first heat diffusion plate has a thermal expansion coefficient equal to a thermal expansion coefficient of the second heat diffusion plate.

### Claim 6 (depends on 1)

The heating rod of claim 1, wherein the ceramic substrate includes at least one among alumina, zirconia toughened alumina (ZTA), and SiN.

### Claim 7 (depends on 1)

The heating rod of claim 1, wherein the heat-radiating element includes at least one among Mo, Ag, Ti, Ru, W, Ni, Cr, and Al.

### Claim 8 (depends on 1)

The heating rod of claim 1, wherein the thickness of the heat-radiating element is in a range of 10 μm to 100 μm and
wherein the thickness of the ceramic substrate is in a range of 100 μm to 1,000 μm.

### Claim 9 (depends on 1)

The heating rod of claim 1, wherein the thickness of the heat-radiating element is in a range of 30 μm to 70 μm.

### Claim 10 (depends on 1)

The heater of claim 1, wherein the thickness of the heat-radiating element is in a range of 40 μm to 60 μm.

### Claim 11

A heater comprising:
a case;
a heat-radiating module disposed in the case and including a heating rod; and
a power module electrically connected to the heat-radiating module,
wherein the heating rod includes:
a ceramic substrate; and
a heat-radiating element disposed in the ceramic substrate, and
wherein a ratio of a thickness of the heat-radiating element to a thickness of the ceramic substrate is in a range of 1:2 to 1:50,
wherein the heat-radiating element is convex alternately in a 1-1 direction and a 1-2 direction of the ceramic substrate, and
wherein the 1-1 direction is from the heat-radiating element toward one surface of the ceramic substrate, and the 1-2 direction is from the heat-radiating element toward an opposite surface of the ceramic substrate.

### Claim 12 (depends on 11)

The heater of claim 11, wherein the power module includes:
a substrate part;
a heat sink connected to the substrate part; and
a ventilation part through which a fluid flows into and out of the heat sink.

### Claim 13 (depends on 11)

The heater of claim 11, wherein the heat-radiating module includes:
a plurality of heating rods;
a plurality of radiation fins disposed between adjacent heating rods; and
gaskets disposed on one side and an opposite side in the case,
wherein the heat-radiating module further includes a connection terminal disposed at an outer portion of the heat-radiating module, and
wherein the connection terminal electrically connects the plurality of heating rods to the power module.

### Claim 14 (depends on 12)

The heater of claim 12, wherein the case includes:
an inlet; and
an outlet disposed to be opposite to the inlet,
wherein a direction in a which the fluid flows in and flows out is the same as a direction from the inlet toward the outlet,
wherein the ventilation part is disposed adjacent to the heat-radiating module, and
wherein the ventilation part has an area, through which the fluid passes, which is decreased in a direction in which the fluid flows out.

### Claim 15 (depends on 11)

The heater of claim 11, further comprising a heat diffusion plate disposed on at least one of an upper portion and a lower portion of the ceramic substrate.

### Claim 16 (depends on 11)

The heater of claim 11, wherein the ceramic substrate includes at least one among alumina, zirconia toughened alumina (ZTA), and SiN.

### Claim 17 (depends on 11)

The heater of claim 11, wherein the heat-radiating element includes at least one among Mo, Ag, Ti, Ru, W, Ni, Cr, and Al.

### Claim 18 (depends on 11)

The heater of claim 11, wherein the thickness of the heat-radiating element is in a range of 10 μm to 100 μm, and
wherein the thickness of the ceramic substrate is in a range of 100 μm to 1,000 μm.

### Claim 19 (depends on 11)

The heater of claim 11, wherein the thickness of the heat-radiating element is in a range of 30 μm to 70 μm.

### Claim 20 (depends on 11)

The heater of claim 11, wherein the thickness of the heat-radiating element is in a range of 40 μm to 60 μm.