JPS5875617A - Gas pressure adjusting apparatus - Google Patents

Abstract

PURPOSE:To enable reduction in pressure drop through a piping, miniaturization of a plurality of solenoid valves and also to achieve simplification and miniaturization of the whole circuit by a construction wherein a governor, the solenoid valves and a pilot gas passage are formed integrally. CONSTITUTION:A primary solenoid valve 18 is actuated in response to igniting operation to thereby open a primary valve seat 20. As a result, the gas introduced from a gas inlet 15 flows into a gas passage 17 on the primary pressure side and then through the clearance between a governor valve 16 and its seat 23 into a secondary pressure chamber 27 so that it may be adjusted by a diaphragm to a predetermined secondary pressure. Further, the gas flows from the secondary pressure chamber 27 through a pilot gas passage 43 into a pilot burner where it is ignited. If, in this condition, the first and second solenoid valves 32 and 33 are opened, the gas flows through gas passages A28 and B29 into gas outlets A30 and A31, respectively, from which the gas is supplied into respective main burners where it is ignited by the flame of a pilot burner. Therefore, the pressure drop in the pipe through between the governor and the solenoid valves can be eliminated thereby enabling miniaturization of the solenoid valves 32 and 33 themselves.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gas pressure adjusting device that is located in the middle of a gas passage and is integrally equipped with a solenoid valve to adjust the pressure of supplied gas.

Conventionally, the gas governor or electromagnetic valve in the gas passage is each separate, and the piping shown in FIG. 1, for example, has been used. When the gas ignition knob 1 is turned, the gas cock 2 is opened, and at the same time, the microswitch 3 is turned on, the igniter 4 is activated, and a spark is emitted from the ignition rod 5 with the pilot burner 6 as the cathode. On the other hand, the main electromagnetic valve 7 is opened by a signal from a microcomputer (not shown), and gas flows from the gas cock 2 to the gas passage 8, is pressure regulated by the governor 9, and further flows to the pilot burner 6, where it is ignited. The thermocouple 10 is heated by this pilot flare, a thermoelectromotive force is generated, and the first solenoid valve 11 and the second solenoid valve 12 are sequentially opened and then closed. As is clear from this example, there is a large loss of pressure in the piping connecting the governor 9 and the solenoid valve 7゜11.12 and in the solenoid valve itself, so it is necessary to make the connection port and the main body of the solenoid valve larger. Therefore, the diameter of the plumbing pipe itself had to be increased. In other words, the size of the device itself has become larger.

The present invention aims to eliminate the above-mentioned conventional drawbacks.

a gas pressure adjustment section having a biasing spring and a governor valve interlocked with the diaphragm; and a primary N: 1111.
The original solenoid valve installed in the middle of the passage of 1 and the secondary pressure side] [
It includes a solenoid valve provided in the middle of the fi path and a pilot gas passage provided on the secondary pressure side, and the passage communicating with the solenoid valve +iiJ and the connecting portion between the pilot passage and the secondary pressure chamber are connected to the diaphragm. It has a configuration in which the circuits are arranged in a straight line and approximately concentrically, and the circuit structure is simplified, and the overall structure is smaller and lighter, resulting in low cost and high durability.

An embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 2 and 3, the gas pressure regulating device 13,
Gas population 15 at one end of aluminum die-cast body 14
has. 1 from this gas population 15 to governor valve 16
A main valve seat 20 that is opened and closed by an on-off valve 19 of a main electromagnetic valve 18 is provided in the middle of the gas passage 17 on the next pressure side. The governor valve 16 is fixed to a diaphragm 21 by a spring receiving plate 22, and is interlocked with the diaphragm 21 so that the governor valve seat 2
3 is opened and closed to adjust the gas pressure depending on the degree of opening. Spring 24 and spring adjustment screw 26 and @
The gas pressure adjusting section 26 is composed of the governor valve 16, the diaphragm 21, and the like. At the periphery of the secondary pressure chamber 27 corresponding to the pressure receiving surface 21& of the diaphragm 21, secondary pressure side gas passages A2B and B29 are arranged approximately on the concentric circle of the diaphragm 21 and approximately perpendicular to the diaphragm 21, and gas passages A2B and B29 are provided on the secondary pressure side, respectively. Connects to B31. Furthermore, a first solenoid valve 32 and a second solenoid valve 33 are provided in the middle thereof, and the respective passages are opened and closed by a first on-off valve 34 and a second on-off valve (not shown).

The first on-off valve 34 and the second on-off valve are connected to the gas passage A2B.
and B29, so that the valve seat A always moves in the direction of closing the valve cover with respect to the valve seat when gas pressure is applied.
It is located at 35.

Said original solenoid valve 19. First solenoid valve 42. The second solenoid valve 33 is connected to the body 14 by screws 38 together with an upper plate 37 which is airtightly provided to the body 14 via a gas chit 36.
It is also tightened and sealed with an O-ring 39. On the other hand, the upper plate 40 on the opposite side is similarly provided on the body 14 in an airtight manner via a gasket 41. The governor canister 42 is provided on the body 14 with the outer peripheral edge of the diaphragm 21 serving as a barrier.

The first electromagnetic valve 32 and the second electromagnetic valve fP+s are arranged at the same distance from the center line in the horizontal direction of the plan view in FIG. Further, a pilot gas passage 43 communicating with a pilot burner (not shown) is provided at the center line 1'-1 and opposite the pressure receiving surface 212L of the diaphragm 21.

In the above configuration, when the main solenoid valve 18 is operated in conjunction with the ignition operation f↑EK and the main valve seat 2o is opened, the gas entering from the gas man 1115 flows into the primary pressure (III) gas passage 17, It flows into the secondary pressure chamber 27 from the gap between the governor valve 16 and the governor valve seat 23, and is regulated to a predetermined secondary pressure by the diaphragm 21.Furthermore, from the secondary pressure chamber 27, the pilot gas passage 43 is 11n... It is ignited by the flow to the iron burner (not shown).

When the first solenoid valve 32 and the second solenoid valve 33 are opened in this state, gas flows from the gas passages A2B and B29 to the gas outlet roms 30 and B31, respectively, and to the respective main burners (
(not shown) and is ignited by the moxibustion of the pilot burner.

According to the above configuration, the piping loss that was observed between the conventional governor and the solenoid valve is almost eliminated.
In addition, the 2' city magnetic valves 32 and 33n can be made smaller, the gas circuit itself can be made simpler and more compact, and, for example, thermal effects can be reduced, and appliances can be made smaller and lighter. Furthermore, the gas passages 12B and B29 to each of the first solenoid valve 32 and the second solenoid valve 33, as well as the pilot gas passage 43, are formed to face the pressure receiving surface 21& of the diaphragm 21 in a substantially perpendicular direction, so that they are made of die-cast material. In terms of manufacturing and processing of the body 14, the bottle is easy to pull out and processing is easy. When even the slightest gas pressure is applied, the first on-off valve 34 always moves in the direction of closing the valve seat 35, resulting in high safety.As described above, according to the present invention, the governor and the plurality of solenoid valves By integrally configuring the pilot gas passage,
This reduces the pressure loss in the piping, making the solenoid valve smaller than conventional solenoid valves, making it possible to make the nine circuits more basic and more compact, and to reduce the pressure loss in the pilot gas passage and multiple solenoid valves. Since the gas passage is arranged almost perpendicular to the receiving surface of the diaphragm and concentrically 1°, it is easy to process with die casting.This gas pressure regulating device has many effects, such as extremely low pressure loss. can be provided.

[Brief explanation of drawings]

Figure 1 is a circuit diagram using conventional gas pressure adjustment equipment.
FIG. 2 is a partially cutaway plan view of a gas pressure regulating device according to an embodiment of the present invention, and FIG. 3 is a cross-sectional view taken along the line 10X-X' of the 21st line. 15...Gas inlet D, 16...Governor valve,
18... Original solenoid valve, 21... Diaphragm, 26... Gas FE adjustment section, 27...2
Secondary pressure chamber, 28.29...Gas passage, 30,31.
・Gun・Gas outlet, 32・Old・・1st solenoid valve, 33・・
...Second solenoid valve, 43...Pie "I Soto gas passage. Name of agent: Patent attorney Toshi Nakao Haga 1st person
Figure 2 Figure 9 Figure 3 2q 8

Claims (1)

[Claims] A gas force adjustment section having a spring that biases a diaphragm and a governor valve interlocked with the R7J diaphragm, a 9'11 magnetic valve provided in the middle of the passage on the primary pressure side, and a passage on the secondary pressure side. IfJ includes a solenoid valve provided in the middle and a pilot gas passage provided on the secondary pressure side.
A gas pressure regulating device in which a passage communicating with the electromagnetic valve, a connecting portion between the L pilot gas passage and the secondary pressure chamber are arranged substantially perpendicularly to the diaphragm and substantially concentrically with the diaphragm.