EP1669673A1 - Gasz ndflammensicherheitsabsperrvorrichtung - Google Patents

Gasz ndflammensicherheitsabsperrvorrichtung Download PDF

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Publication number
EP1669673A1
EP1669673A1 EP04788290A EP04788290A EP1669673A1 EP 1669673 A1 EP1669673 A1 EP 1669673A1 EP 04788290 A EP04788290 A EP 04788290A EP 04788290 A EP04788290 A EP 04788290A EP 1669673 A1 EP1669673 A1 EP 1669673A1
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EP
European Patent Office
Prior art keywords
pipe
male terminal
shaped male
shaped
terminal
Prior art date
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Granted
Application number
EP04788290A
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English (en)
French (fr)
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EP1669673B1 (de
EP1669673A4 (de
Inventor
Hirokazu c/o Mikuni Corp. Morioka Branch SATO
Isao c/o Mikuni Corp. Morioka Branch KOBAYASHI
Nobuyuki Mikuni Corp. Morioka Branch FUJIWARA
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Mikuni Corp
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Mikuni Corp
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Publication of EP1669673A4 publication Critical patent/EP1669673A4/de
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
    • F23N5/245—Preventing development of abnormal or undesired conditions, i.e. safety arrangements using electrical or electromechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/10—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples
    • F23N5/107—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples using mechanical means, e.g. safety valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q9/00—Pilot flame igniters
    • F23Q9/08—Pilot flame igniters with interlock with main fuel supply
    • F23Q9/12—Pilot flame igniters with interlock with main fuel supply to permit the supply to the main burner in dependence upon existence of pilot flame
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/183—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section
    • H01R4/184—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion
    • H01R4/185—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion combined with a U-shaped insulation-receiving portion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2900/00—Special features of, or arrangements for controlling combustion
    • F23N2900/05101—Connections between thermocouple and magnetic valves, e.g. by plug and socket connectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
    • H01R4/643—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail for rigid cylindrical bodies

Definitions

  • the present invention relates to a gas burner safety device which is employed to a gas cooking stove, a gas water heater, and the like. More particularly, it relates to a gas burner safety device to which a thermo-couple unit and an electromagnetic valve unit which is operated by electricity generated with thermoelectric power are integrally coupled.
  • a gas cooking stove system as shown in Fig. 13 for example is known.
  • This system comprises a main burner 2 disposed at the upper end of a gas supply conduit 1, a lighting burner 4 disposed at the top end of an assist supply conduit 3 which separates from the gas supply conduit 1, a gas burner safety device 8 to which an electromagnetic valve unit 6 having a valve body 5 to open and close the passage of the gas supply conduit 1 and a thermo-couple unit 7 having cables 7a', 7b'connected to the electromagnetic unit 6 are integrally arranged, an operating shaft 9, and so on, as disclosed in Japanese Patent Laid-open 2000-18591 and H8-178296.
  • thermoelectric power is generated at the thermo-couple unit 7, and the electricity generated by the thermoelectric power flows in a coil of the electromagnetic valve unit 6 to generate electromagnetic power. In this manner, the valve body 5 is sucked and maintains the gas passage at an opened state.
  • thermo-couple unit 7 When the flame of the main burner 2 is extinguished by blow-off, boil-spill or the like, the heating to the thermo-couple unit 7 is interrupted and the thermoelectric power, namely the electromagnetic force, is extinguished. Then, the valve body 5 is returned by a return spring and the gas passage is closed. In this manner, emission of unburned gas is prevented.
  • the electronic valve unit 6 and the thermo-couple unit 7 are electrically connected by connecting two male terminals 6a, 6b disposed at the electromagnetic valve unit 6 side with two female terminals 7a, 7b disposed at the thermo-couple unit 7 side. Accordingly, two pairs of male terminals 6a, 6b and female terminals 7a, 7b which are almost the same shape are disposed in parallel with each other for coupling freely to be attached and detached.
  • thermo-couple unit 7 comprises cables 7a', 7b'which are respectively connected to the female terminal 7a, 7b, a pole-shaped conductive member 7a" as the thermal sensitive portion which is disposed at the top end of the cables 7a', 7b', a pipe-shaped conductive member 7b" which is disposed around and connected to the pole-shaped conductive member 7a" with the top end portion which is formed as a tapered cone-shape, and a pipe-shaped conductive member 7b'''which diameter is ⁇ D.
  • a hot junction part P1 is formed at the top end portion at which the pole-shaped conductive member 7a" and the pipe-shaped conductive member 7b" are connected, and a cold junction part P2, P3 is formed at a specific distance apart from the hot junction part P1.
  • thermo-couple unit 7 Furthermore, performances, such as high thermoelectric power, quick response, etc, are needed for the thermo-couple unit 7 to be able to precisely detect the extinguishment of the gas flame. Therefore, to achieve downsizing, cost-reduction and the like as the whole device, the performance has to be obtained without enlargement, cost-up and the like of the thermal sensitive portion (7a", 7b",7b"').
  • the present invention was devised in view of the abovementioned circumstances of the related art.
  • the object of the present invention is to provide a gas burner safety device with improved performance reliability, while achieving downsizing, cost-reduction, assembling facilitation, etc. of the device.
  • a gas burner safety device of the present invention comprises a thermo-couple unit having two terminals connected to a thermal sensitive portion, and an electromagnetic valve unit having two terminals connected to a coil for magnetizing and respectively connected to the two terminals of the thermo-couple unit and a valve body driven by electromagnetic force generated by powering to the coil, and either two terminals of the thermo-couple unit or the electromagnetic valve unit comprise a pipe-shaped male terminal having at least an arc-shaped portion of a cylinder and either of an inner male terminal and an inner female terminal which is disposed inside the pipe-shaped male terminal, and the other two terminals of the thermo-couple unit or the electromagnetic valve unit comprise an outer female terminal connected to at least one side of the inside and the outside of the wall face of the pipe-shaped male terminal and the other of the inner male terminal and the inner female terminal which is disposed inside the pipe-shaped male terminal.
  • the pipe-shaped male terminal which is disposed in either of the thermo-couple unit and the electromagnetic valve unit is connected to the outer female terminal which is disposed in the other of the thermo-couple unit and the electromagnetic valve unit.
  • Either of the inner female terminal and the inner male terminal which is disposed in the axis direction at the center axis position of the pipe-shaped male terminal is connected to the other of the inner female terminal and the inner male terminal which is disposed in the unit without the pipe-shaped male terminal.
  • the terminals can be disposed in parallel to the axis direction of the pipe-shaped male terminal.
  • the device can be downsized in width and in size. Further, since the pipe-shaped male terminal can be connected to the outer female terminal at any position in the arc direction of the pipe-shaped male terminal, the attaching angle between the thermo-couple unit and the electromagnetic valve unit can be flexible when connecting.
  • the inner female terminal has a pair of spring pieces which can sandwich the inner male terminal
  • the outer female terminal has a pair of spring pieces which can sandwich the wall face of the pipe-shaped male terminal both from the inside and the outside.
  • the inner female terminal and the outer female terminal are folded approximately in a V-shape to have a flexible piece, and the pipe-shaped male terminal and the inner male terminal are inserted and detached in the direction approximately perpendicular to the deforming direction of the flexible piece.
  • the connecting pressure between the male terminal (the pipe-shaped male terminal and the inner male terminal) and the female terminal (the inner female terminal and the outer female terminal) is exerted approximately even in the direction of inserting and detaching. Therefore, stable electrical contact can be obtained reliably.
  • pin-shaped male terminal does not project from the pipe-shaped male terminal and stays inside at the state that the electromagnetic valve unit and the thermo-couple unit are separated, breakage etc. of the pin-shaped male terminal can be prevented.
  • the thickness of the pipe-shaped male terminal is the same dimension as the outer diameter of the inner male terminal.
  • thermo-couple unit or the electromagnetic valve unit comprises the inner female terminal and the outer female terminal , and further comprises a fit portion which retains the inner female terminal and is fitted inside the pipe-shaped male terminal, and a sandwich piece which retains the outer female terminal and sandwiches the pipe-shaped male terminal from the outside in cooperation with the outer circumference of the fit portion.
  • thermo-couple unit and the electromagnetic valve unit are connected.
  • the fit portion is fitted inside the pipe-shaped male terminal, and the pin-shaped male terminal is connected to the inner female terminal which is surrounded by the fit portion.
  • the sandwich piece sandwiches the pipe shaped male terminal in cooperation with the outer circumference of the fit portion, and the inner face and the outer face of the pipe-shaped male terminal are connected to the outer female terminal. In this manner, reliable electric connection can be obtained.
  • the pipe-shaped male terminal is formed with almost even thickness and the fit portion is formed approximately cylindrical to match with the pipe-shaped male terminal.
  • thermo-couple unit the pipe-shaped male terminal (the electromagnetic valve unit) which is formed cylindrical and the fit portion (the thermo-couple unit) which is formed approximately cylindrical to match with the pipe-shaped male terminal are fitted to be point symmetry around the axis. Therefore, the thermo-couple unit and the electromagnetic valve unit can be fitted in the direction of any angle without caring about the orientation, and the assembling operation can be easily performed.
  • the pipe-shaped male terminal has a folded portion which top end portion is folded inside, and the fit portion has a pawl portion for latching with the folded portion.
  • the fit portion (the thermo-couple unit) is fitted to the pipe-shaped male terminal (the electromagnetic valve unit)
  • the pawl portion of the fit portion latches the folded portion of the pipe-shaped male terminal. Accordingly, detachment of the fit portion from the pipe-shaped male terminal can be prevented.
  • the fit portion has a deform portion which can elastically deform in the direction perpendicular to the direction of fitting to the pipe-shaped male terminal, and the pawl portion is formed at the top end of the deform portion.
  • the deform portion elastically returns and the pawl portion disposed at the top end thereof latches the folded portion of the pipe-shaped male terminal. Accordingly, the fitting operation of the fit portion (the thermo-couple unit) and the pipe-shaped male terminal (the electromagnetic valve unit) can easily be performed, and easy detachment of the fit portion from the pipe-shaped male terminal can be prevented.
  • the pipe-shaped male terminal integrally has an attachment flange for fixing the electromagnetic valve unit at a desired position.
  • the gas burner safety device which comprises the electromagnetic valve unit and the thermo-couple unit can be fixed.
  • the pipe-shaped male terminal integrally has a screw cap for fixing the electromagnetic valve unit at a desired position.
  • the gas burner safety device which comprises the electromagnetic valve unit and the thermo-couple unit can be fixed.
  • the electromagnetic valve unit has a movable core which is integrally movable with the valve body and a fixed core on which the coil is wound, and the pipe-shaped male terminal integrally has a holder for retaining the fixed core.
  • a gas burner safety device of the present invention comprises a thermo-couple unit having a thermal sensitive portion at the top end thereof, and an electromagnetic valve unit which is driven by electromagnetic force based on thermoelectric power generated at the thermo-couple unit, and the thermal sensitive portion of the thermo-couple unit includes a pole-shaped conductive member and a pipe-shaped conductive member which is cylindrically disposed around and connected to the pole-shaped conductive member with the top end portion which is formed as a cone shape, and the pipe-shaped conductive member is formed so that the thickness at a cold junction part of the rear end side is larger than that at a hot junction part of the top end to which the pole-shaped conductive member is connected.
  • thermoelectric power characteristics and response can be improved.
  • a top end thin portion which outer diameter is the smallest is formed at the top end connecting region of the pole-shaped conductive member and the pipe-shaped conductive member, and the length of the top end thin portion is formed at about 30 through 50 percent of the distance from the hot junction part to the cold junction part.
  • thermoelectric power characteristics and response can be improved (namely obtaining higher thermoelectric power and quicker response).
  • the two terminals at the electromagnetic valve unit side and the two terminals at the thermo-couple unit side are disposed in the same axis direction. Therefore, the device can be aggregated and the device can be brought down in width and in size. Further, in the unit having the pipe-shaped male terminal, by disposing the other terminal is at the center axis position of the pipe-shaped male terminal, the pipe-shaped male terminal can be fitted and connected to the outer female terminal of the other unit at any angle having the center axis as the center. In this manner, flexibility of the attaching angle between the thermo-couple unit and the electromagnetic valve unit at the time of connecting can be improved, and assembling operation can easily be performed.
  • thermoelectric power characteristics and response can be improved.
  • Fig. 1 through 7 show an embodiment of a gas burner safety device of the present invention.
  • Fig. 1 shows a front view and a side view of the whole device.
  • Fig. 2 is a sectional view of the device in the axis direction.
  • Fig. 3 is a sectional view showing the state that an electromagnetic valve unit and a thermo-couple unit are separated.
  • Fig. 4 is sectional view of the device in the direction perpendicular to the axis of the device.
  • Fig. 5 is a sectional view showing a part of the device.
  • Fig. 6 is a partial view showing the structure of the terminals.
  • Fig. 7 has a side view and a sectional view showing a thermal sensitive portion of the thermo-couple unit.
  • the electromagnetic valve unit 100 and the thermo-couple unit 200 are coupling freely to be attached and detached.
  • the electromagnetic valve unit 100 comprises a fixed core 101, a resin-made bobbin 102 to support the fixed core 101, a coil 103 for magnetization which integrally wounds on the fixed core 101 and the bobbin 102, a conductive holder 104 to fix the bobbin 102 by calking, a pin-shaped male terminal 105 which is connected to one end 103a of the coil 103 and constitutes one portion of a pair of male terminals, an insulate member 106 to retain the pin-shaped male terminal 105 at the center of the holder 104 while performing electrical insulation therebetween, a pipe-shaped male terminal 107 made of conductive material which is connected to the holder 104 and constitutes the other portion of the pair of male terminals, a resin-made case 108 to cover the fixed core 101, a movable core 110 fixed at one end of a shaft 109 which is slidably supported by the case 108, a rubber-made valve body 111 fixed at the other end of the shaft
  • the fixed core 101 is made of magnetic material, such as permalloy, and is formed approximately into a U-shape.
  • the bobbin 102 is made of isolating material (non-conductive material), and is formed approximately into an inverted U-shape. At the state that the fixed core 101 is supported by the bobbin 102, the bobbin 102 and the fixed core 101 are formed approximately into an H-shape, and the coil 103 is wound thereon as the longitudinal winding.
  • the holder 104 is made of conductive material, such as brass, and the top end portion thereof is calked to fix the bobbin 102.
  • the other end 103b of the coil 103 is electrically connected to the top end of the holder 104 by hot welding, cold welding, and so on.
  • the pin-shaped male terminal 105 is made of conductive material, and formed as a tapered cylindrical shape (a needle shape) which top end is closed. Then, it is retained at the center of the holder 104 without any contact thereto by the isolate member 106.
  • the pipe-shaped male terminal 107 is made of conductive material, such as a metal plate which is of a specific thickness, and is formed cylindrical having an approximately rhomboid attachment flange 107a integrally at the top end. Further, a folded portion 107b is formed by folding the end edge portion inside. Then, the pipe-shaped male terminal 107 functions as the second connector which is fitted to (the below-mentioned first connector 206 of) the thermo-couple unit 200.
  • the relation between the pipe-shaped male terminal 107 and the pin-shaped male terminal 105 is shown in Fig. 3.
  • the pin-shaped male terminal 105 is disposed at the inside center of the pipe-shaped male terminal 107.
  • the pipe-shaped male terminal 107 is formed to be longer than the pin-shaped male terminal by dimension L, so that the pin-shaped male terminal 105 does not project from the pipe-shaped male terminal 107.
  • the pin-shaped male terminal does not directly contact anything, even if it drops or hits other parts. Therefore, bending, breakage and the like can be prevented.
  • the pipe-shaped male terminal 107 is formed so that the thickness including the folded portion 107b is the same as the diameter of the pin-shaped male terminal 105.
  • the same parts can be used for both an inner female terminal 204 and an outer female terminal 205, which is described later.
  • the thermo-couple unit 200 comprises a thermal sensitive portion 201 formed at the top end, a first cable 202 and a second cable 203 which are drawn from the thermal sensitive portion 201, the inner female terminal 204 which is connected to an end portion of the first cable 202 and constitutes one portion of a pair of female terminals, the outer female terminal 205 which is connected to an end portion of the second cable 203 and constitutes the other portion of the pair of female terminals, the first connector 206 to retain the inner female terminal and the outer female terminal 205, a seal member 207 to seal an end portion of the first connector 206, and so on.
  • the thermal sensitive portion 201 comprises a pole-shaped conductive member 201a which is connected to the first cable 202, a pipe-shaped conductive member 201b which is disposed cylindrically around the pole-shaped conductive member 201a and connected to the pole-shaped conductive member 201a at the top end which is formed conical, a second pipe-shaped conductive member 201c which connects the pipe-shaped conductive member 201b to the first cable 203, and so on.
  • the pole-shaped conductive member 201a is made of alloy material of Ni, Cu and Mn, and forms a solid shape.
  • the pipe-shaped conductive member 201b is made of alloy material of Ni, Cr and Fe, and the top end is formed conical and the bottom end is formed cylindrical.
  • the thickness at the conical region is thinner than that at the cylindrical region.
  • the outer diameter at the cylindrical region of the pipe-shaped conductive member 201b is smaller than that of the related art shown in Fig. 13.
  • the second pipe-shaped conductive member 201c is formed cylindrical with a diameter ⁇ Dl which is smaller than the diameter of the related art in Fig. 13 ( ⁇ D1 ⁇ D).
  • a hot junction part P1 is formed at the top end region at which the pole-shaped conductive member 201a and the pipe-shaped conductive member 201b are connected, and a cold junction part P2, P3 is formed at a position which is apart from the hot junction part P1 toward the rear by a specific distance.
  • the rear side of the pipe-shaped conductive member 201b namely the cold junction part P2 is formed thicker than the warm junction P1. Therefore, even though the diameter of the pipe-shaped conductive member 201b is smaller than that of the related art, the same thermoelectric power characteristics and response can be maintained. In this manner, downsizing and cost-reduction can be achieved.
  • the top end thin portion which outer diameter ⁇ d is the smallest is defined.
  • the length L1 of the top end thin portion is formed at about 30 through 50 percent of the distance between the hot junction part P1 and the cold junction part P2.
  • the dimension L1 is set to be longer than the dimension L of the related art shown in Fig. 13, and contributes to high thermoelectric power and quick response.
  • thermoelectric power characteristics and response improve further.
  • the inner female terminal 204 has a pair of spring pieces 204a, 204a which is formed to be able to sandwich the pin-shaped male terminal 105 along the axis from both outer sides in the diameter direction of the circumference face.
  • the pair of spring pieces 204a, 204a is respectively folded approximately in a V-shape, and has a pair of flexible pieces 204a', 204a' which can contact both sides of the circumference face of the pin-shaped male terminal 105 while facing each other.
  • the pin-shaped male terminal 105 is free to be inserted and detached in the direction (the direction being perpendicular to the paper face of Fig.4 (a), (b)) which is approximately perpendicular to the deforming direction (the direction being horizontal to Fig. 4 (a), (b)) of the pair of flexible pieces 204a', 204a'.
  • the outer female terminal 205 is formed as approximately the same shape as the inner female terminal 204. As shown in Fig. 3 and Fig. 4, the outer female terminal 205 has a pair of spring pieces 205a, 205a which is formed to be able to sandwich the wall face of the pipe-shaped male terminal 107 from both the inside and the outside. As shown in Fig. 4 (b), the pair of spring pieces 205a, 205a is respectively folded approximately in a V-shape, and has a pair of flexible pieces 205a', 205a' which can contact to both sides of the inner circumference and the outer circumference of the pipe-shaped male terminal 107 as facing each other.
  • the pipe-shaped male terminal 107 is free to be inserted and detached in the direction (the direction being perpendicular to the paper face of Fig.4 (a), (b)) which is approximately perpendicular to the deforming direction (the direction being horizontal to Fig. 4 (a), (b)) of the pair of flexible pieces 204a', 204a'.
  • the first connector 206 comprises a fit portion 206a which is fitted to the inside of the pipe-shaped male terminal 107 to retain the inner female terminal 204, a sandwich piece 206b which retains the outer female terminal 205 in cooperation with the outer circumference of the fit portion 206a and which sandwiches the pipe-shaped male terminal 107 from the outside, and so on.
  • the fit portion 206 is formed to include a deform portion 206a' which can elastically deform in the direction perpendicular to the fitting direction by forming an incision in the fitting direction at a part thereof. Then, as shown in Fig. 5, a pawl portion 206a" is integrally formed at the top end of the deform portion 206a' to latch with the folded portion 107b of the pipe-shaped male terminal 107.
  • the fit portion 206a' is formed approximately cylindrical being integral with the deform portion 206a', so as to match with the pipe-shaped male terminal 107 as the second connector which shape is cylindrical. Accordingly, when the first connector 206 and the second connector (the pipe-shaped male terminal) 107 are fitted together, the fit portion 206a is fitted to the inside of the pipe-shaped male terminal 107.
  • the pin-shaped male terminal 105 is fitted into and connected to the inner female terminal 204 which is surrounded by the fit portion 206a.
  • the sandwich piece 206b sandwiches the pipe-shaped male terminal 107 in cooperation with the outer circumference of the fit portion 206a. Then, the pipe-shaped male terminal 107 is fitted into and connected to the outer female terminal 205 with which the inside face and the outside face of the pipe-shaped male terminal 107 contact. In this manner, the electrical contact can reliably be obtained.
  • the pipe-shaped male terminal (the second connector) 107 and the fit portion 206a (the first connector 206) are fitted to be point symmetry around the axis, the first connector 206 and the second connector (the pipe-shaped male terminal) 107 can be fitted in the direction at any angle without caring the orientation. Therefore, the assembling operation can easily be performed.
  • the assembling process of the electromagnetic valve unit 100 and the thermo-couple unit 200 having the abovementioned structure is shown in Fig. 3.
  • the pin-shaped male terminal 105 is positioned to face the inner female terminal 204, and both are brought close to each other.
  • the fit portion 206a (and the deform portion 206a') of the first connector 206 is inserted to the pipe-shaped male terminal (the second connector) 107.
  • the pawl portion 206a" is latched with the folded portion 107b. In this manner, the electromagnetic valve unit 100 and the thermo-couple unit 200 are reliably connected.
  • the pin-shaped male terminal 105 is inserted to the inner female terminal 204 and is sandwiched by the pair of spring pieces 204a, 204a. Then, the pipe-shaped male terminal 107 is inserted to the outer female terminal 205, and sandwiched by the pair of spring pieces 205a, 205a at the inner circumference and the outer circumference. In this manner, the pair of male terminals (the pin-shaped male terminal and the pipe-shaped male terminal 107) and the pair of female terminals (the inner female terminal 204 and the outer female terminal 205) are electrically connected reliably.
  • thermo-couple unit 200 Next, the operation when this gas burner safety device is utilized to a gas cooking stove system as shown in Fig. 11 is explained.
  • an operating shaft 9 is pushed to introduce gas to a gas supply conduit 1 and an assist supply conduit 3, and a main burner 2 is lighted with a flame of a lighting burner 4. Then, the flame of the main burner heats the thermal sensitive portion 201 of the thermo-couple unit 200.
  • thermoelectric power is generated at the thermo-couple unit 200.
  • the electricity generated by the thermoelectric power flows in a coil 103 via the first cable 202 and the second cable 203, and the electromagnetic power is generated.
  • a movable core 110 is sucked to a fixed core 101, and the state that a valve body 111 keeps the gas passage opened is maintained.
  • thermo-couple unit 200 when the flame of the main burner 2 is extinguished by blow-off, boil-spill or the like, the heating to the thermo-couple unit 200 is interrupted and the thermoelectric power, namely the electromagnetic force, is extinguished. Then, the valve body 111 is returned by a return spring 112 and the gas passage is closed. In this manner, emission of unburned gas is prevented.
  • Fig. 9 shows another embodiment of the gas burner safety device of the present invention.
  • the same numerical is given to the same structure of the abovementioned embodiment to omit explanation.
  • a part of the electromagnetic valve unit 100' is modified from the abovementioned embodiment.
  • a pipe-shaped male terminal 107' is adopted as the second connector instead of the pipe-shaped male terminal 107 and the holder 104 shown in Fig. 2.
  • a holder 107a' to retain the fixed core 101 and a bobbin 102 is integrally formed at the pipe-shaped male terminal 107'.
  • a stepped portion 107b' for being latched with the pawl portion 206a" is formed at the inside of the cylindrical portion to which the fit portion 206a is fitted.
  • the pipe-shaped male terminal 107' serves as the holder to retain the fixed core 101 as well as the second connector to be connected to the first connector 206 of the thermo-couple unit 200, the parts count can be reduced accordingly. Therefore, the device can be simplified in structure and can be downsized.
  • Fig. 10 further shows another embodiment of the gas burner safety device of the present invention.
  • the same numerical is given to the same structure of the abovementioned embodiment to omit explanation.
  • a part of the electromagnetic valve 100" is modified from the abovementioned embodiment.
  • a pipe-shaped male terminal 107" is adopted as the second connector instead of the pipe-shaped male terminal 107 shown in Fig. 2.
  • a screw cap 107a" to be screwed to the gas supply conduit 1 etc, is formed at the pipe-shaped male terminal 107".
  • a stepped portion 107b" for being latched with the pawl portion 206a" is formed inside the cylindrical portion to which the fit portion 206a is fitted.
  • the pipe-shaped male terminal 107" serves as the screw cap 107a" to be screwed to a screw portion of a piping etc. as well as the second connector to be connected to the first connector 206 of the thermo-couple unit 200. Therefore, by screwing the screw cap 107a" to a desired position (for example, the gas supply passage) while grounding the pipe-shaped male terminal 107", the gas burner safety device can be fixed without using any separate fix member.
  • the pipe-shaped male terminal 107, 107', 107" as the second connector is formed cylindrical, and the fit portion 206a to form the first connector is formed approximately cylindrical.
  • the pipe-shaped male terminal and the fit portion do not have to be circular, for example, rectangular. In this case, the device can also be brought down in width and in size. Further, the pair of male terminals and the pair of female terminals can reliably be connected.
  • the inner female terminal 204 and the outer female terminal 205 which constitute the pair of female terminals have the pair of spring pieces 204a, 204a, 205a, 205a, respectively.
  • FIG. 11 and Fig. 12 Another embodiment is explained based on Fig. 11 and Fig. 12.
  • a pin-shaped male terminal 105 and a pipe-shaped male terminal 107 (107', 107"), namely a pair of male terminals, are disposed in the electromagnetic valve unit 100, and an inner female terminal 204 and an outer female terminal 205, namely a pair of female terminals, are disposed in the thermo-couple unit 200.
  • the pin-shaped male terminal 105 and the inner female terminal 204 are fitted, and the pipe-shaped male terminal 107 and the outer female terminal 205 are fitted.
  • the terminals in the electromagnetic valve unit 100 are not limited to two male terminals, and the terminals in the thermo-couple unit 200 are not limited to two female terminals.
  • the electromagnetic valve unit 100 and the thermo-couple unit 200 respectively have one male terminal and one female terminal.
  • a first unit 300 has a pipe-shaped male terminal 301, a pair of inner female terminals 302 made of spring material at the inside of the pipe-shaped male terminal 301, and a support member 303 at the outside of the inner female terminals 302.
  • the support member 303 is made of insulating material and is disposed between the pipe-shaped male terminal 301 and the inner female terminal 302.
  • the pair of inner female terminals 302 is disposed to sandwich the center axis P of the cylinder of the pipe-shaped male terminal, and extend in the direction parallel to the center axis P.
  • the support member 303 is cylindrical having the center axis P of the pipe-shaped male terminal 301 as its center, and has a slit 304 which is parallel to the center axis P.
  • the sit 304 does not necessarily need to be formed at the support member 303.
  • the top end of the inner female terminal 302 which is disposed inside the pipe-shaped male terminal 301 does not project outside than the top end of the pipe-shaped male terminal 301.
  • the pipe-shaped male terminal 301 includes an arc portion of the cylinder of the pipe-shaped male terminal 301, namely a shape of a cylinder which part is deleted.
  • the pipe-shaped male terminal 301 can be a cylindrical shape without any notch portion.
  • the pipe-shaped male terminal 107 shown as a cylindrical shape in Fig. 1 through 4 and Fig. 9 through 10, can be a shape including an arc portion of a cylinder, namely a shape of a cylinder which part is deleted.
  • a second unit 400 has a pin-shaped male terminal 401, a pair of outer female terminals 402 made of spring material extending being parallel to the pin-shaped male terminal 401, and a support member 403 made of insulating material to respectively support the outer female terminals 402.
  • the pin-shaped male terminal 401 of the second unit 400 contacts to the pair of inner female terminals 302 of the first unit 300, and the pipe-shaped male terminal 301 of the first unit 300 contacts to the pair of outer female terminals 402 of the second unit 400.
  • the first unit 300 and the second unit 400 respectively have a male terminal and a female terminal. Therefore, the first unit 300 and the second unit 400 are not limited to have two male terminals or two female terminals.
  • the first unit 300 can be the electromagnetic valve unit 100 or the thermo-couple unit 200.
  • the second unit 400 can be the thermo-couple unit 200 or the electromagnetic valve unit 100.
  • the electromagnetic valve unit 100 has a pair of male terminals and the thermo-couple unit 200 has a pair of female terminals.
  • the electromagnetic valve unit 100 has a pair of female terminals and the thermo-couple unit 200 has a pair of male terminals.
  • the pipe-shaped male terminal 301 of the first unit can be sandwiched by and connected to the female terminal 402 of the second unit 400 at any position of the arc shape, and in the case of the cylindrical shape without any notch portion at any position of 360 degrees.
  • the flexibility of the attaching angle at the time of connecting the electromagnetic valve unit 100 and the thermo-couple unit 200 is improved, and the assembling operation can be easily performed.
  • two terminals in the second unit 400 can be surrounded by a connecter such as the second connecter 206.
  • the gas burner safety device of the present invention downsizing in width and in size, structure simplification, cost reduction, flexibility of the attaching angle when connecting, etc. can be obtained. Therefore, not limited to a gas cooking stove, the device can be adopted to a gas water heater and other gas applications, which need a system to close the gas passage when the burning gas flame extinguishes unexpectedly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Magnetically Actuated Valves (AREA)
  • Control Of Combustion (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Regulation And Control Of Combustion (AREA)
EP04788290.7A 2003-09-30 2004-09-29 Sicherheitsabsperrvorrichtung für gasbrenner Expired - Lifetime EP1669673B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003339063 2003-09-30
PCT/JP2004/014223 WO2005031213A1 (ja) 2003-09-30 2004-09-29 ガス立消え安全装置

Publications (3)

Publication Number Publication Date
EP1669673A1 true EP1669673A1 (de) 2006-06-14
EP1669673A4 EP1669673A4 (de) 2012-02-01
EP1669673B1 EP1669673B1 (de) 2016-06-22

Family

ID=34386177

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04788290.7A Expired - Lifetime EP1669673B1 (de) 2003-09-30 2004-09-29 Sicherheitsabsperrvorrichtung für gasbrenner

Country Status (5)

Country Link
EP (1) EP1669673B1 (de)
JP (1) JP4198156B2 (de)
CN (1) CN100526718C (de)
BR (1) BRPI0414923A (de)
WO (1) WO2005031213A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT509486B1 (de) * 2009-12-18 2011-09-15 Fronius Int Gmbh Brenner und verfahren zur stromerzeugung und bauteil für einen solchen brenner
ITTO20110736A1 (it) * 2011-08-05 2013-02-06 Illinois Tool Works Metodo di fabbricazione di una termocoppia per un piano di cottura e termocoppia cosi' ottenuta
WO2016162173A1 (en) * 2015-04-08 2016-10-13 Orkli, S.Coop. Safety valve adapted to a gas combustion appliance
WO2020135985A1 (en) * 2018-12-24 2020-07-02 Arcelik Anonim Sirketi A cooking device comprising a safety member

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4519026B2 (ja) * 2005-07-26 2010-08-04 リンナイ株式会社 電磁安全弁
CN102405562B (zh) * 2010-06-30 2015-08-19 萨巴夫股份有限公司 用于使热电偶与供气安全旋塞的磁性组件相连的电连接件
ES2394611B1 (es) * 2010-07-09 2013-11-28 Orkli, S.Coop. Acoplamiento para conectar un termopar a una válvula electromagnética adaptada a un aparato de gas.
JP2012079452A (ja) * 2010-09-30 2012-04-19 Yamatake Corp 電子機器保持用ソケットおよび火炎センサ
CN105004442A (zh) * 2015-05-11 2015-10-28 奥可利电子(昆山)有限公司 一种热电偶连接塑件
CN107437461B (zh) * 2016-05-25 2018-09-18 四川艾德瑞电气有限公司 液浸式移相变压器用移相角快速转换装置

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EP0619460A1 (de) * 1993-03-31 1994-10-12 Orkli S. Coop. Ltda. Koaxiale Verbindung eines Thermoelements von einen Gasregler für einen Brenner
ES1030940U (es) * 1995-04-27 1995-11-01 Vicent Manuel Valls Conector para el termopar de un quemador de gas.

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EP0619460A1 (de) * 1993-03-31 1994-10-12 Orkli S. Coop. Ltda. Koaxiale Verbindung eines Thermoelements von einen Gasregler für einen Brenner
ES1030940U (es) * 1995-04-27 1995-11-01 Vicent Manuel Valls Conector para el termopar de un quemador de gas.

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT509486B1 (de) * 2009-12-18 2011-09-15 Fronius Int Gmbh Brenner und verfahren zur stromerzeugung und bauteil für einen solchen brenner
AT509486A4 (de) * 2009-12-18 2011-09-15 Fronius Int Gmbh Brenner und verfahren zur stromerzeugung und bauteil für einen solchen brenner
ITTO20110736A1 (it) * 2011-08-05 2013-02-06 Illinois Tool Works Metodo di fabbricazione di una termocoppia per un piano di cottura e termocoppia cosi' ottenuta
WO2013021341A3 (en) * 2011-08-05 2013-04-11 Illinois Tool Works Inc. Manufacturing method for a cooking range thermocouple and thermocouple obtained therewith
WO2016162173A1 (en) * 2015-04-08 2016-10-13 Orkli, S.Coop. Safety valve adapted to a gas combustion appliance
US10495308B2 (en) 2015-04-08 2019-12-03 Orkli, S. Coop. Safety valve
RU2710638C2 (ru) * 2015-04-08 2019-12-30 Оркли, С.Кооп. Предохранительный клапан для устройства сжигания газа
WO2020135985A1 (en) * 2018-12-24 2020-07-02 Arcelik Anonim Sirketi A cooking device comprising a safety member

Also Published As

Publication number Publication date
BRPI0414923A (pt) 2006-11-07
JPWO2005031213A1 (ja) 2008-06-12
EP1669673B1 (de) 2016-06-22
WO2005031213A1 (ja) 2005-04-07
EP1669673A4 (de) 2012-02-01
JP4198156B2 (ja) 2008-12-17
CN1860332A (zh) 2006-11-08
CN100526718C (zh) 2009-08-12

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