Heater device for heating liquefied gas

Patent metadata

Field	Value
Publication number	US-2016201901-A1
Application number	US-201414914128-A
Country	US
Kind code	A1
Filing date	Jun 18, 2014
Priority date	Sep 4, 2013
Publication date	Jul 14, 2016
Grant date	—

Abstract

[Problem]
To enable to heat and atomize liquefied gas even at low temperatures by increasing a flow path length and a transit time to be heated by a heater, and by spending time and efficiently heat the liquefied gas.
[Solution]
A device housing having a hollow portion including a gas intake pipe projectingly provided to an outer periphery of an instrument body such that liquefied gas is taken in from an outer end, having the heater built therein and attached to the instrument body. In the hollow portion of the device housing, a heating wall formed by a bulge extending from the outer end side to the inner end side in the axial direction of the intake pipe and the heater for heating are internally provided. Between the heating wall and the gas intake pipe, and between the heating wall and the inner wall of the housing, inner and outer gas flow paths are formed. To make these gas flow paths into return passages, the gas flow paths are communicated at the inner end side of the device housing, a liquefied gas introduction side opening is provided at an outer end side of the outer gas flow path, and the outer end side of the inner gas flow path is communicated with a gas intake opening of the tip of the gas intake pipe.

First claim

1 . A heater device for heating liquefied gas in liquefied gas-utilization equipment that promotes atomization of liquefied gas at low temperatures by heating liquefied gas flowing through a gas flow path, comprising:
a device housing having a hollow portion including a gas intake pipe projectingly provided to an outer of an instrument body such that liquefied gas is taken in from an outer end, the device housing is attached to an instrument body in a state in which a liquefied gas flow path is formed within the hollow portion and the heater that heats the inside of the hollow portion is built therein, wherein the liquefied gas flow path includes a return flow path formed by folding at least one of an end portion of the flow path inside the hollow portion of the device housing.

2 . The heater device for heating liquefied gas according to claim 1 , wherein the heater is provided at a portion where all or one portion of the gas flow path formed within the hollow portion can be heated.

3 . The heater device for heating liquefied gas according to claim 1 , wherein the hollow portion is formed in a cylindrical shape so as to surround the gas intake pipe across a predetermined interval.

4 . The heater device for heating liquefied gas according to claim 1 , wherein in the hollow portion of the device housing, a partition wall is provided which partitions the inside of the hollow portion such that a plurality of flow paths communicate with each other.

5 . The heater device for heating liquefied gas according to claim 4 , wherein the partition wall is formed in a shape so as to surround a periphery of the gas intake pipe across a predetermined interval.

6 . The heater device for heating liquefied gas according to claim 5 , wherein the partition wall is formed in a cylindrical shape forming the gas flow paths with inner walls therebetween of the hollow portion and with the gas intake pipe therebetween by protruding towards an axial direction of the gas intake pipe inside the hollow portion of the device housing.

7 . The heater device for heating liquefied gas according to claim 4 , wherein the heater is assembled within the partition wall and is configured to heat liquefied gas that flows through the gas flow paths formed on both sides of the partition wall.

8 . The heater device for heating liquefied gas according to claim 4 , wherein the partition wall is formed in a cylindrical shape so as to surround the intake pipe across a predetermined interval in the hollow portion of the device housing and tubular passages formed at inner and outer peripheries of the partition wall are formed as return flow paths by communicating with each other at the inner end of the partition wall.

9 . The heater device for heating liquefied gas according to claim 7 , wherein either of a planar heater or a cylindrical heater that conforms to the shape of the partition wall, or a plurality of rod-shaped, planar, or column-shaped heaters that substantially uniformly heat the heater wall, are provided to the partition wall.

10 . A heater device for heating liquefied gas in liquefied gas-utilization equipment that promotes atomization of liquefied gas at low temperatures by heating liquefied gas flowing through a gas flow path, comprising:
a device housing having a hollow portion including a gas intake pipe projectingly provided to an outer of an instrument body such that liquefied gas is taken from an outer end, the device housing is attached to an instrument body in a state in which a liquefied gas flow path is formed within the hollow portion and the heater that heats the inside of the hollow portion is built therein; wherein the liquefied gas flow path includes a return flow path formed by folding at least one of an end portion of the flow path inside the hollow portion of the device housing; and a cylindrical metal case with the heater built therein and having a tip end thereof closed, wherein metal case is provided to the device housing o as to extend along an axial direction by inserting into the inner side from an outer end of the intake pipe, wherein a flow path for heating liquefied gas is formed between the cylindrical metal case and an inner wall of the gas intake pipe.

11 . The heater device for heating liquefied gas according to claim 10 , wherein the hollow portion is formed in a cylindrical shape so as to surround the gas intake pipe across a predetermined interval.

12 . The heater device for heating liquefied gas according to claim 10 , wherein in the hollow portion of the device housing, a partition wall is provided that partitions the inside of the hollow portion such that a plurality of flow paths communicate with each other.

13 . The heater device for heating liquefied gas according to claim 10 , wherein the partition wall is formed in a shape so as to surround a periphery of the gas intake pipe across a predetermined interval.

14 . The heater device for heating liquefied gas according to claim 13 , wherein the partition wall is formed in a cylindrical shape forming the gas flow path with inner walls therebetween of the hollow portion and with the gas intake pipe therebetween by protruding towards an axial direction of the gas intake pipe inside the hollow portion of the device housing.

15 . The heater device for heating liquefied gas according to claim 12 , wherein the partition wall is formed in a cylindrical shape so as to surround the intake pipe across a predetermined interval in the hollow portion of the device housing, and tubular passages formed at inner and outer peripheries of the partition wall are formed as return flow paths by communicating with each other at the inner end of the partition wall.

16 . The heater device for heating liquefied gas according to claim 10 , wherein a plurality of fins are provided along an outer wall of the cylindrical metal case.

17 . The heater device for heating liquefied gas according to claim 1 , wherein the gas intake pipe is made of a metal material.

18 . The heater device for heating liquefied gas according to claim 10 , wherein the gas intake pipe is made of a metal material.

Assignees

• Nippon Thermostat Kk

Inventors

• Sato Yoji
• Shimomura Kazuhito

Classifications

• F24H1/102

  with resistance · CPC title

• H05B3/44

  heating conductor arranged within rods or tubes of insulating material · CPC title

• F24H9/0021

  Sleeves surrounding heating elements or heating pipes, e.g. pipes filled with heat transfer fluid, for guiding heated liquid · CPC title

• H05B3/06

  Heater elements structurally combined with coupling elements or holders · CPC title

• H05B2203/02

  Heaters using heating elements having a positive temperature coefficient · CPC title