Heating apparatus

Patent metadata

Field	Value
Publication number	US-9662961-B2
Application number	US-201314395414-A
Country	US
Kind code	B2
Filing date	Apr 8, 2013
Priority date	Apr 20, 2012
Publication date	May 30, 2017
Grant date	May 30, 2017

Abstract

A heating apparatus which is assembled by inserting a columnar heating wire heater 2 into a hole 30 provided in a case 3 , and heats cooling water introduced into the case 3 by the heating wire heater 2 , wherein the heating wire heater 2 is inserted into boss portions 42 and 43 provided in the case 3 , both end portions are supported by O-rings 50 disposed between inner peripheral walls of the boss portions 42 and 43 and an outer peripheral wall of the heating wire heater 2 , a gap 45 for passing the cooling water is formed along an outer peripheral surface of the heating wire heater 2 between the two boss portions 42 and 43 within the case 3 , and a tapered portion 60 and a rounded portion 61 are formed on an end portion on an insertion-direction distal end side of the heating wire heater 2.

First claim

The invention claimed is:

1. A heating apparatus which is assembled by inserting a columnar heating element into a hole provided in a case, and heats a heating medium introduced into the case by the heating element,
wherein the heating element includes a cylindrical tube portion where a tapered portion is formed at least on one end portion, a heating wire provided inside the tube portion, and a bottom plate that seals an end portion on the tapered portion side of the tube portion, the end portion is inserted into a boss portion provided in the case, and is supported by an O-ring disposed between an inner peripheral wall of the boss portion and an outer peripheral wall of the heating element,
a heating medium passage for passing the heating medium is formed along an outer peripheral surface of the heating element on an inner side of the O-ring within the case, and
the bottom plate is arranged on an axially inner side of the tube portion with respect to the tapered portion.

2. The heating apparatus according to claim 1 , wherein the bottom plate is welded to an inner wall of the tube portion to seal the end portion of the tube portion.

3. The heating apparatus according to claim 1 ,
wherein the heating apparatus is mounted on a vehicle, and
the heating medium is cooling water used for an air-conditioning system of the vehicle.

4. The heating apparatus according to claim 2 ,
wherein the heating apparatus is mounted on a vehicle, and
the heating medium is cooling water used for an air-conditioning system of the vehicle.

Assignees

• Sanden Corp
• Sanden Holdings Corp

Inventors

• Takada Kazumasa

Classifications

• H05B3/78

  Heating arrangements specially adapted for immersion heating · CPC title

• H05B3/40

  Heating elements having the shape of rods or tubes (H05B3/62, H05B3/68, H05B3/78 take precedence) · CPC title

• B60H2001/2278

  Connectors, water supply, housing, mounting brackets · CPC title

• B60H1/2221 Primary

  arrangements of electric heaters for heating an intermediate liquid (B60H1/034 takes precedence) · CPC title

• F24H1/121

  using electric energy supply · CPC title