GB1586299A – Liquefied gas apparatus
– Google Patents
GB1586299A – Liquefied gas apparatus
– Google Patents
Liquefied gas apparatus
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Publication number
GB1586299A
GB1586299A
GB48174/77A
GB4817477A
GB1586299A
GB 1586299 A
GB1586299 A
GB 1586299A
GB 48174/77 A
GB48174/77 A
GB 48174/77A
GB 4817477 A
GB4817477 A
GB 4817477A
GB 1586299 A
GB1586299 A
GB 1586299A
Authority
GB
United Kingdom
Prior art keywords
liquefied gas
gas apparatus
evaporator
capillary passages
pressure reducer
Prior art date
1976-11-19
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB48174/77A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ST Dupont SA
Original Assignee
ST Dupont SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
1976-11-19
Filing date
1977-11-18
Publication date
1981-03-18
1977-11-18
Application filed by ST Dupont SA
filed
Critical
ST Dupont SA
1981-03-18
Publication of GB1586299A
publication
Critical
patent/GB1586299A/en
Status
Expired
legal-status
Critical
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Classifications
F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
F23Q—IGNITION; EXTINGUISHING-DEVICES
F23Q2/00—Lighters containing fuel, e.g. for cigarettes
F23Q2/16—Lighters with gaseous fuel, e.g. the gas being stored in liquid phase
F23Q2/162—Lighters with gaseous fuel, e.g. the gas being stored in liquid phase with non-adjustable gas flame
F23Q2/163—Burners (gas valves)
F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
F17C7/02—Discharging liquefied gases
F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
F17C2201/00—Vessel construction, in particular geometry, arrangement or size
F17C2201/05—Size
F17C2201/056—Small (<1 m3)
F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
F17C2201/00—Vessel construction, in particular geometry, arrangement or size
F17C2201/05—Size
F17C2201/058—Size portable (<30 l)
F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
F17C2203/00—Vessel construction, in particular walls or details thereof
F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
F17C2203/0634—Materials for walls or layers thereof
F17C2203/0636—Metals
F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
F17C2205/0382—Constructional details of valves, regulators
F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
F17C2223/0146—Two-phase
F17C2223/0153—Liquefied gas, e.g. LPG, GPL
F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
F17C2270/00—Applications
F17C2270/07—Applications for household use
Description
PATENT SPECIFICATION
( 11) Al, ( 21) Application No 48174/77 ( 22) Filed 18 Nov 1977 ( 19) Cj ( 31) Convention Application No 7 635 039 ( 32) Filed 19 Nov 1976 in 4: ( 33) France (FR)
= ( 44) Complete Specification published 18 March 1981
4 ( 51) INT CL 3 F 23 Q 2/16 P ( 52) Index at acceptance F 4 F DC ( 54) LIQUEFIED GAS APPARATUS ( 71) We, S T DUPONT, a French Societe Anonyme, of 33, Avenue du Maine, Paris 15, France, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: -
The invention relates to liquefied gas apparatus and, more particularly, gas lighters for smokers.
For the proper operation of liquefied gas apparatus, an evaporation device is necessary, that is to say a device which allows the passage into the gaseous phase of gas stored in liquid phase and which, among other functions, must then transmit to the liquid gas the heat necessary for this passage into the gaseous phase Furthermore, in these apparatus, a device for controlling the flow of released gas must also be provided, this control taking place before, during or after the passage into the gaseous phase.
Generally, the two devices are grouped together and as a consequence a part of the heat extracted by the gas from the evaporation device is in turn extracted from the flow control device, whose operation is disturbed by it sometimes even to the point of blockage.
To obviate this disadvantage, it has been proposed to insulate thermally from each other the flow control device and the evaporation device.
However, since it is impossible to achieve an absolute thermal insulation, this arrangement is not efficient beyond a certain quantity of heat supply.
The present invention has as its object to propose a different arrangement so that the heat necessary for evaporation has practically no influence on the operation of the flow control device.
This invention provides a liquefied gas apparatus comprising a pressure reducerevaporator providing at one and the same time for the passage into the gaseous phase of gas stored in liquid phase and the control of the flow of released gas, wherein all solid materials with which the pressure reducerevaporator is in contact have a thermal conductivity less than 5 Kcal/mfi/h C.
Suitable such solid materials are, for example, plastics material such as nylon 6-6, Delrin (registered trademark) or polyvinyl 55 chloride.
According to one partiularly interesting embodiment of the invention, the pressure reducer-evaporator comprises, in a way known per se, a metallic mass whose thermal 60 conductivity is greater than 40 Kcal/m/h/ 0 C.
In the case of a lighter having a plastics body, this mass will for example be disposed in a housing provided for this purpose in 65 the body of the lighter.
According to another particularly interesting embodiment of the invention, the pressure reducer-evaporator is formed by a metal casing, inside which is held a sintered metal 70 part known per se.
According to another interesting embodiment, said metal casing is appreciably longer than the sintered path which is surrounds.
Embodiment of the invention will now be 75 described, by way of examples only, with reference to the accompanying drawings, in which:
Figure 1 is a partial sectional view of one embodiment of the invention applied to a 80 non-adjustable lighter; Figure 2 shows a variation of Figure 1; Figure 3 shows an embodiment of the invention applied to an adjustable lighter; Figures 4 to 9 illustrate six variations of 85 pressure reducer-evaporators.
In Figure 1, the body ( 1) of a lighter moulded from plastics material comprises a tube ( 2) moulded from the same material as body ( 1) 90 Part ( 3) of this tube, whose end, which is not drawn, penetrates into a liquefied gas storage enclosure, has a smaller internal diameter than part ( 4) which emerges outside the lighter, thus forming an internal shoulder 95 ( 5).
In part ( 4) of tube ( 2) are successively disposed a pressure reducer-evaporator ( 6) and a burner ( 7).
The pressure reducer-evaporator, which 100 1 586 299 1,586,299 bears on the internal shoulder ( 5), is formed, on the one hand, by a sintered metal cylinder ( 8) and a metal tube ( 9) closed on the burner side, apart from an orifice ( 10) and in which cylinder ( 8) has been force fitted.
It will be noted that the length of tube ( 9) is appreciably greater than that of cylinder ( 8).
Burner ( 7) comprises an axial channel ( 11) with a side escape in its lower part, a closing device ( 12) and a groove ( 13) The closing device ( 12) is made of rubber, for example from butadiene-acrylondrile rubber.
Thus, the operation is as follows: the supply of liquefied gas to the pressure reducer-evaporator takes place from part ( 3) of tube ( 2) which penetrates into the gas storage enclosure.
The closing and the opening of the circuit are achieved by means of a spring, not shown in the figure, which bears on groove ( 13).
When the burner is lifted, the pressure inside the storage enclosure, which is higher than the atmospheric pressure, drives liquefied gas through part ( 3) of tube ( 2) towards the pressure reducer-evaporator While travelling through the capillary passages of cylinder ( 8), this liquified gas passes to the gaseous phase and the pressure losses which it undergoes reduce its flow to an acceptable value.
During this passage in the gaseous phase, the gas takes the necessary heat first of all from cylinder ( 8), then from the metal part ( 9) which touches cylinder ( 8) and finally from the free part of tube ( 9) Thus, the heat available in the pressure reducerevaporator is progressively used.
Because the pressure-reducer evaporator is exclusively in contact with poor conducting materials, in the case in point the plastics material of the body of the lighter and the insulating material of closing member ( 12), it is protected against an inopportune arrival of heat and especially of heat supplied by the flame of the burner It is obvious that the metal mass must be chosen with respect to the flame that is desired.
The device shown in Figure 2 is a variation of Figure 1.
Body ( 14) o-f the lighter, made from plastics material as in the case of Figure 1, comprises a moulded tube ( 15) This tube comprises, on the inside, two bores ( 16) and ( 17) separated by a cross wall ( 18) having a central opening ( 19).
A burner ( 20), identical to burner ( 7) of Figure 1, is disposed in bore ( 16) and its closing member ( 21) normally bears on opening ( 19).
The pressure reducer-evaporator ( 22) is disposed in bore ( 17) and bears on cross wall ( 18) It is formed from a sintered metal cylinder ( 23) disposed inside a metal tube 65 ( 24) open at both ends.
As in the case of Figure 1, this tube ( 24) is appreciably longer than cylinder ( 23).
The operating of the device is the same as that of the device shown in Figure 1 70 Figure 3 shows an application of the invention to an adjustable lighter.
Body ( 25) of the lighter, also made from plastics material, comprises an inner boss ( 26) which is extended by a tube ( 39) emerg 75 ing inside a liquefied gas storage enclosure.
Inside this boss, a bore ( 27), screwthreaded for part of its height, successively receives a pressure reducer-evaporator, an adjusting screw 29 and a burner ( 30) 80 For the sake of simplicity, we will suppose that burner ( 30) is identical to burner ( 7) and ( 20) of Figures 1 and 2.
The pressure reducer-evaporator comprises a washer ( 32) made from a porous 85 material and a metal mass in two parts, one ( 33) in the shape of an asymmetrical diabolo and the other ( 34) in the shape of a lozenge.
The lozenge ( 34) rests on the bottom of the bore which is provided with four radial 90 grooves ( 40) It comprises a stud ( 35) which engages in a central hole ( 36) of diabolo ( 33).
An 0-ring ( 41) made of rubber acts as a seal between the wall of the bore and the diabolo.
The adjusting screw ( 29), made from 95 plastics material, like the body of the lighter, is hollow so as to receive burner ( 30) and is screw-threaded at its periphery so as to be screwable in the threaded part of bore ( 27).
It ends in a bearing surface ( 37) in contact 100 with the upper bearing surface of diabolo ( 33) and is moreover provided with a milled ring ( 38).
The operation of the device is as follows:
When the burner is lifted, closing member 105 ( 31) releases opening ( 36) and the liquefied gas arrives through tube 39) and grooves ( 40) to washer ( 32), passes through this washer and into the annular section channel defined by stud ( 35) of lozenge ( 34) and the opening 110 ( 36) of the asymmetrical diabolo ( 33); it is then in the gaseous state and can be lighted at the outlet of the burner.
Because the pressure reducer-evaporator is exclusively in contact with poor conduct 115 ing materials (components 26, 31, 29, 41) it is therefore protected against an inopportune arrival of heat and especially of heat supplied by the flame of the burner.
The adjustment of the flame is carried out 120 in a conventional way by rotating screw ( 29) by means of milled ring ( 38): this rotation causes a more or less high compression of washer ( 32) and so modifies the overall section of the capillary passages 125 As is provided on most lighters for smokers, the angular freedom of milled ring ( 38) is limited by a means not illustrated in 1,586,299 the figure, because it forms no part of the invention.
Figure 4 shows a variation in which the pressure reducer-evaporator is formed from a cylinder ( 42), made from sintered ceramic or from a sintered plastics material, held in a flat metal cylinder ( 43) The unit is mounted between the supply tube ( 37) and the part of lighter ( 44) carrying the burner, not shown and located in bore ( 45).
The bottom ( 46) of this bore comprises an orifice ( 47) normally closed by the closing member of the burner (not shown).
In Figure 5, the pressure reducerevaporator is formed by a cylinder, ( 49), made of plastics material, grooved at its periphery so as to form, with metal tube ( 48) in which it is located, a plurality of capillary passages Metal tube ( 48) is identical to tube ( 9) of Figure 1.
In Figure 6, the pressure reducerevaporator is the same as that of Figure 1 except for a compressible porous lozenge ( 50) disposed between the sintered cylinder and the metal tube.
In Figure 7, the pressure reducerevaporator is formed from a bell ( 51) having a circular skirt ( 52) Inside the bell is disposed a sintered metal cylinder ( 53).
The variation of Figure 8 comprises a metal tube ( 54) identical to tubes ( 9) and ( 48) and inside which are located, on the one hand, a sintered metal cylinder ( 55) and, on the other hand, the end of a wick ( 56).
This end is set in the free part of tube ( 54), the other end being located in the gas storage enclosure.
The variation of Figure 9 comprises a metal tube ( 57) whose free part ( 58) is flared out in relation to the diameter of the tube so as not to touch the wick ( 59), which is set inside tube ( 57) and which constitutes therewith the pressure reducer-evaporator The widening of part ( 58) of tube ( 57) provides for a progressive arrival of heat to wick ( 59).
By the term "poor conducting material", as used with reference to the drawings, is meant a material having a thermal conductivity less than 5, but preferably higher than 0 3, Kcal/m/h/0 C The metal mass of each pressure reducer-evaporator has a thermal conductivity preferably greater than Kcal/m/h/0 C.
Claims (1)
WHAT WE CLAIM IS:-
1 A liquefied gas apparatus, comprising a pressure reducer-evaporator providing at one and the same time for the passage into the gaseous phase of gas stored in liquid phase and the control of the flow of released gas, wherein all solid materials with which the pressure reducer-evaporator is in contact have a thermal conductivity less than 5 Kcal/m/h/l C 65 2 An apparatus according to claim 1, wherein the pressure reducer-evaporator comprises a metal mass whose thermal conductivity is higher than 40 Kcal/m/h/ O C.
3 A liquefied gas apparatus according 70 to claim 2, wherein the pressure reducerevaporator comprises a plurality of capillary passages.
4 A liquefied gas apparatus according to claim 3, wherein the capillary passages are 75 located at the periphery of a solid mass.
A liquefied gas apparatus according to claim 3, wherein the capillary passages are formed by a porous mass.
6 A liquefied gas apparatus according to 80 claim 5, wherein the porous mass forming the capillary passages is a sintered part.
7 A liquefied gas apparatus according to one of clams 3 to 6, wherein at least one part of the metal mass is in the form of a 85 tube surrounding the capillary passages.
8 A liquefied gas apparatus according to claim 7, wherein the metal tube is closed at one end except for an orifice.
9 A liquefied gas apparatus according to 90 one of claims 7 and 8, wherein only a part of the metal tube is in contact with the mass forming the capillary passages.
A liquefied gas apparatus according to one of claims 1 to 9, wherein the pressure 95 reducer-evaporator is disposed in a plastics tube which penetrates into the gas storage enclosure.
11 A liquefied gas apparatus according to one of claims 7 to 9, wherein one end of 100 a porous wick is held in the metal tube, the other end of the wick being located in the gas storage enclosure.
12 A liquefied gas apparatus according to claim 11, wherein the wick constitutes, by 105 itself, the capillary passages of the pressure reducer-evaporator.
13 A liquefied gas apparatus according to one of claims 3 to 11, wherein the pressure reducer-evaporator is fitted with a device for 110 varying the overall cross-section of the capillary passages.
14 A liquefied gas apparatus according to any preceding claim, wherein all said solid materials with which the pressure reducer 115 evaporator is in contact have a thermal conductivity higher than 0 3 Kcal/m/h/ O C.
A liquefied gas apparatus as claimed in any preceding claim, in the form of a lighter for smokers 120 16 A liquefied gas apparatus as claimed in claim 1, wherein the pressure reducerevaporator comprises an element serving to convert into the gaseous phase said gas stored in the liquid phase and at the same 125 time controlling the flow of released gas, and 1,586,299 a metal element in contact with the firstmentioned element.
17 A lighter substantially as herein described with reference to any one of the accompanying drawings.
A A THORNTON & CO, Chartered Patent Agents, Northumberland House, 303/306 High Holbornm, London WC 1 V 7 LE.
Printed for Her Majesty's Stationery Office by Burgess & Son (Abingdon), Ltd -1981.
Published at The Patent Office, 25 Southampton Buildings, London, WC 2 A l AY, from which copies may be obtained.
GB48174/77A
1976-11-19
1977-11-18
Liquefied gas apparatus
Expired
GB1586299A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
FR7635039A
FR2371633A1
(en)
1976-11-19
1976-11-19
LIQUEFIED GAS APPLIANCE, ESPECIALLY GAS LIGHTER FOR SMOKERS
Publications (1)
Publication Number
Publication Date
GB1586299A
true
GB1586299A
(en)
1981-03-18
Family
ID=9180130
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB48174/77A
Expired
GB1586299A
(en)
1976-11-19
1977-11-18
Liquefied gas apparatus
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JP
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AT
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BR
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CA
(1)
CA1099936A
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CH
(1)
CH619765A5
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DE
(1)
DE2751798A1
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ES
(1)
ES464273A1
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FR
(1)
FR2371633A1
(en)
GB
(1)
GB1586299A
(en)
MX
(1)
MX145414A
(en)
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active
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1977-11-07
BE
BE182409A
patent/BE860554A/en
not_active
IP Right Cessation
1977-11-09
CH
CH1367777A
patent/CH619765A5/fr
not_active
IP Right Cessation
1977-11-10
BR
BR7707553A
patent/BR7707553A/en
unknown
1977-11-16
MX
MX17135877A
patent/MX145414A/en
unknown
1977-11-17
US
US05/852,415
patent/US4177646A/en
not_active
Expired - Lifetime
1977-11-17
AT
AT823077A
patent/AT359758B/en
not_active
IP Right Cessation
1977-11-18
GB
GB48174/77A
patent/GB1586299A/en
not_active
Expired
1977-11-18
ES
ES464273A
patent/ES464273A1/en
not_active
Expired
1977-11-18
CA
CA291,167A
patent/CA1099936A/en
not_active
Expired
1977-11-19
DE
DE19772751798
patent/DE2751798A1/en
active
Granted
1977-11-19
JP
JP13939177A
patent/JPS5365176A/en
active
Granted
Also Published As
Publication number
Publication date
DE2751798A1
(en)
1978-05-24
CA1099936A
(en)
1981-04-28
BE860554A
(en)
1978-03-01
DE2751798C2
(en)
1987-01-08
FR2371633B1
(en)
1980-11-07
BR7707553A
(en)
1978-06-20
MX145414A
(en)
1982-02-04
JPS5365176A
(en)
1978-06-10
ATA823077A
(en)
1980-04-15
US4177646A
(en)
1979-12-11
ES464273A1
(en)
1978-08-01
JPS6326285B2
(en)
1988-05-28
AT359758B
(en)
1980-11-25
FR2371633A1
(en)
1978-06-16
CH619765A5
(en)
1980-10-15
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Legal Events
Date
Code
Title
Description
1981-06-03
PS
Patent sealed [section 19, patents act 1949]
1982-03-24
732
Registration of transactions, instruments or events in the register (sect. 32/1977)
1997-12-10
PE20
Patent expired after termination of 20 years
Effective date:
19971117
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