JP2011256915A - Gas valve device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce cost by reducing the number of component items even when a gas passage part on the downstream side of a solenoid valve is formed to extend straightly upward from a valve hole 64 of the solenoid valve and bend in an L-shaped form, in a gas valve device including a valve casing 2 with a manual valve 4 incorporated therein, a passage block 5 having a flange part 51 jointed to a flange part 21 with a gas outflow port 23 on an outer surface of the valve casing opened, and a solenoid valve 6 for opening/blocking a gas passage 52 in the passage block.SOLUTION: An overhang part 5a overhanging to a projection space to the lower side of a gas passage part 52b on the downstream side of a solenoid valve is formed at a part of a passage block 5 on the lower side relative to the valve hole 64; on the overhang part 5a, a hole part 52d reaching the gas passage part 52b from its undersurface is opened; and a seal part 71 for closing an open end of the hole part 52d is formed integrally with packing 7 interposed between the flange part 21 of the valve casing 2 and the flange part 51 of the passage block 5.

Description

  The present invention communicates with a gas outlet, a valve casing having a manual valve that is manually opened and closed, a flow path block having a flange portion joined to a flange portion having a gas outlet on the outer surface of the valve casing, and a gas outlet The present invention relates to a gas valve device including an electromagnetic valve that opens and closes a gas flow path in a flow path block.

  Conventionally, as this type of gas valve device, the direction from the valve casing toward the flow path block is upward, the flange portion of the flow path block is connected to the gas outlet, the portion of the gas flow path upstream of the electromagnetic valve, and And the downstream side of the solenoid valve extends in the same direction from the valve hole in the front-rear direction of the solenoid valve formed at a position above the flange portion of the channel block. What formed the part of the gas flow path is known (for example, refer patent document 1).

  By the way, depending on the arrangement of the gas piping in the gas appliance in which the gas valve device is installed, the portion of the gas flow path on the downstream side of the electromagnetic valve is formed in the flow path block above the flange portion of the flow path block. In some cases, it is required to form a bent shape in an L shape extending straight upward from the valve hole of the electromagnetic valve. In this case, conventionally, the block portion forming the gas flow path portion on the downstream side of the solenoid valve is integrally formed with the flow path block so that the lower surface thereof is offset above the flange portion, The straight part of the flow path is formed by punching so as to open to the lower surface or the upper surface of the block part, and the bent part of the gas flow path is formed by punching the upper part of the block part.

  However, when the straight portion of the gas flow path is formed in the block portion so as to open to the lower surface or the upper surface as described above, it is necessary to close the opening end of the straight portion with the packing and the cover plate. For this reason, the number of parts increases, resulting in an increase in cost.

Japanese Patent Laid-Open No. 7-119846 (FIG. 8)

  In view of the above points, the present invention provides the number of parts even when the gas flow path portion on the downstream side of the solenoid valve is formed so as to extend straight from the valve hole of the solenoid valve and bend in an L shape. It is an object to provide a gas valve device that can reduce the cost and reduce the cost.

  The present invention communicates with a gas outlet, a valve casing having a manual valve that is manually opened and closed, a flow path block having a flange portion joined to a flange portion having a gas outlet on the outer surface of the valve casing, and a gas outlet A gas valve device comprising an electromagnetic valve for opening and closing a gas flow path in the flow path block, wherein the direction from the valve casing toward the flow path block is upward, and communicates with the gas outlet at the flange portion of the flow path block. A connection port that becomes a part of the gas flow path on the upstream side of the solenoid valve is opened, and the part of the gas flow path on the downstream side of the solenoid valve is located above the flange part of the flow path block in the flow path block. In order to solve the above-mentioned problems, the above-described configuration is characterized in that it is formed so as to be straightly bent upward from the valve hole of the electromagnetic valve formed in That.

  That is, according to the present invention, a projecting portion is formed in the portion of the flow path block below the valve hole of the solenoid valve so as to project into the projection space below the portion of the gas flow path on the downstream side of the solenoid valve. A hole that opens from the lower surface of the overhanging portion flush with the lower surface of the flange portion of the flow channel block to the gas flow channel portion on the downstream side of the solenoid valve is opened, and the flange portion of the valve casing and the flange of the flow channel block The seal part which closes the opening end of a hole part is integrally formed in the packing interposed between parts.

  According to the present invention, in order to form the overhanging portion in the flow path block as described above, the portion of the gas flow path on the downstream side of the solenoid valve is punched out so as to open to the lower surface of the overhanging portion through the hole. Can be formed. Further, in order to close the opening end of the hole portion with a seal integral with the packing interposed between the flange portion of the valve casing and the flange portion of the flow path block, a dedicated packing for closing the opening end of the hole portion and A cover plate is not required, and the number of parts can be reduced to reduce costs.

The perspective view of the gas valve apparatus of embodiment of this invention. Sectional drawing of the gas valve apparatus of FIG. Sectional drawing cut | disconnected by the III-III line | wire of FIG.

  1 and 2, reference numeral 1 denotes a gas valve device according to an embodiment of the present invention provided in a gas appliance such as a gas stove. The gas valve device 1 includes a valve casing 2 made of an aluminum die-cast product elongated in the front-rear direction, an electromagnetic safety valve 3 housed in the rear end portion of the valve casing 2, and a closed manual valve housed in an intermediate portion of the valve casing 2. The solenoid valve 6 that opens and shuts off the gas flow path 5 in the flow path block 5, and the flow path block 5 made of an aluminum die-cast product having a flange 4 that joins the element 4 and the flange 21 on the outer surface of the valve casing 2. And.

  The valve casing 2 includes a gas inlet 22 that communicates with the storage space of the electromagnetic safety valve 3, a gas outlet 23 that communicates with the storage space of the closing member 4, a storage space of the electromagnetic safety valve 3, and a storage space of the closing member 4. A valve hole 24 is formed between them. The gas outlet 23 is opened in the flange portion 21 of the valve casing 2.

  The electromagnetic safety valve 3 includes a valve body 32 that is biased by a spring 31 to a closed position that closes the valve hole 24, a magnetic piece 34 attached to the rear end of the valve shaft 33 that extends backward from the valve body 32, and a magnetic piece 34. And an electromagnet 35 opposed to each other. The valve body 32 is pushed by a later-described pressing rod 28 to a position where the magnetic piece 34 comes into contact with the electromagnet 35. By energizing the electromagnet 35 in this state, the electromagnetic safety valve 3 is attracted and held in the open state.

  The closing member 4 is formed of a cylindrical body having an outer peripheral surface as a tapered surface. The polymerization opening degree between the closing hole 41 opened on the outer peripheral surface of the closing member 4 and the gas outlet 23 changes as the closing member 4 rotates, and the amount of gas supplied to the burner of the gas appliance is adjusted. Is done.

  An operation shaft 26 that is inserted into the valve casing 2 through a cover plate 25 attached to the front end of the valve casing 2 and a connector 27 that is housed in the front end portion of the valve casing 2 are provided. An operation knob (not shown) is attached to the front end portion of the operation shaft 26. At the rear end of the connector 27 is formed a non-circular cross-sectional hole 27a into which the rear end of the operation shaft 26 formed in a non-circular cross-section is fitted, and the front-rear direction formed at the front end of the closure 4 A claw piece 27b that is engaged with the split groove is projected. Then, the closing member 4 is rotated via the connector 27 by the rotation of the operation shaft 26.

  A longitudinal pressing rod 28 is provided in the front-rear direction penetrating the closing member 4. The pressing rod 28 is in contact with the rear end of the operation shaft 26 by the biasing force of the spring 28a. When the operating shaft 26 is pushed, the pressing rod 28 is pushed by the operating shaft 26 and moves forward to the electromagnetic safety valve 3 side. The pressing rod 28 comes into contact with the valve body 32 of the electromagnetic safety valve 3 so that the electromagnetic safety valve 3 The valve is pressed and opened.

  Hereinafter, the flow path block 5 will be described in detail with the direction from the valve casing 2 toward the flow path block 5 being upward. In the flow path block 5, a valve chamber 62 that accommodates the valve body 61 of the electromagnetic valve 6 and is positioned above the flange portion 51 is formed by die cutting or the like so as to open rearward. A valve hole 64 extending in the front-rear direction is formed in the valve seat 63 at the front end of 62. The opening end of the valve chamber 62 that opens rearward is closed by a solenoid 65 of the electromagnetic valve 6.

  In addition, the flange portion 51 of the flow path block 5 is opened so that a connection port 52 a that communicates with the gas outlet 23 and becomes a portion of the gas flow path 52 on the upstream side of the electromagnetic valve 6 reaches the valve chamber 62. Yes. A packing 7 is interposed between the flange portion 21 of the valve casing 2 and the flange portion 51 of the flow path block 5 in order to prevent gas leakage from the communication portion between the gas outlet 23 and the connection port 52a. It is installed.

  Further, as shown in FIG. 3, the flow path block 5 is formed with a side path 53 that always communicates the valve chamber 62 and the valve hole 64. Then, when the orifice member 54 is attached to the side passage 53 and the electromagnetic valve 6 is closed, a small flow rate gas restricted by the orifice member 54 is supplied to the burner.

  Further, the flow path block 5 includes an electromagnetic valve 6 including a straight portion 52b extending straight upward from the valve hole 64 of the electromagnetic valve 6 and a bent portion 52c bent in an L shape rearward from the upper end of the straight portion 52b. A portion of the gas flow path 52 on the downstream side is formed.

  Here, generally, the lower surface of the portion of the flow path block 5 that forms the straight portion 52b corresponds to the valve hole 64 of the electromagnetic valve 6 positioned above the flange portion 51 of the flow path block 5, The straight portion 52b is formed by die cutting or the like so as to be offset upward from the flange portion 51 and open to the lower surface. However, in this case, it is necessary to close the opening at the lower end of the straight portion 52b with a dedicated packing and a cover plate, which increases the number of parts and increases the cost.

  Therefore, in the present embodiment, the projection space below the straight portion 52b, which is the portion of the gas flow path 52 on the downstream side of the electromagnetic valve 6, on the portion of the flow path block 5 below the valve hole 64 of the electromagnetic valve 6. An overhanging portion 5 a is formed, and the lower surface of the overhanging portion 5 a is flush with the lower surface of the flange portion 51. And the hole part 52d which reaches the straight part 52b from the lower surface is opened in the overhang | projection part 5a. According to this, the straight part 52b can be formed by die cutting or the like so as to open to the lower surface of the overhang part 5a through the hole part 52d.

  In addition, a seal portion 71 that closes the open end of the hole portion 52 d is formed integrally with the packing 7 interposed between the flange portion 21 of the valve casing 2 and the flange portion 51 of the flow path block 5. This eliminates the need for a dedicated packing and cover plate that closes the open end of the hole 52d, thereby reducing the number of parts and reducing costs.

  As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to this. For example, in the above embodiment, the valve casing 2 has the built-in closing member 4 that is opened and closed as a manual valve by a turning operation. However, the gas valve device in which a manual valve that is opened by a pushing operation is built in the valve casing is also used. Similarly, the present invention can be applied. In the description of the embodiment, the direction from the valve casing 2 toward the flow path block 5 is upward, but the vertical direction does not define the direction when the gas valve device is used. Also included in the present invention is a gas valve device that is used in a lateral orientation toward the side or a downward orientation in which the flow path block 5 is directed downward.

  DESCRIPTION OF SYMBOLS 1 ... Gas valve apparatus, 2 ... Valve casing, 21 ... Flange part of valve casing, 23 ... Gas outlet, 4 ... Closer (manual valve), 5 ... Flow path block, 5a ... Overhang part, 51 ... Flow path block 52 ... Gas channel, 52a ... Connection port, 52b ... Straight part (gas channel part downstream of the solenoid valve), 52d ... Hole, 6 ... Solenoid valve, 64 ... Valve hole, 7 ... Packing 71, seal part.

Claims (1)

A valve casing having a manual valve that is opened and closed by manual operation, a flow path block having a flange portion joined to a flange portion having a gas outlet on the outer surface of the valve casing, and a flow path block communicating with the gas outlet A gas valve device comprising an electromagnetic valve for opening and closing the gas flow path of
With the direction from the valve casing toward the flow path block as the upper side, a connection port that is a part of the gas flow path on the upstream side of the solenoid valve that is connected to the gas outlet is opened in the flange portion of the flow path block. The portion of the gas flow path on the downstream side of the electromagnetic valve extends straight upward from the valve hole of the electromagnetic valve formed at a position higher than the flange portion of the flow path block and bends in an L shape. In what is formed
A projecting portion is formed in the portion of the flow path block below the valve hole of the solenoid valve, and is projected into the projection space below the portion of the gas flow channel on the downstream side of the solenoid valve. A hole reaching the part of the gas flow path downstream of the solenoid valve from the lower surface of the overhanging portion flush with the lower surface of the flange portion is opened,
A gas valve device, wherein a seal portion for closing an opening end of a hole portion is formed integrally with a packing interposed between a flange portion of a valve casing and a flange portion of a flow path block.

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