JPS6219653B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gas pressure regulating device which regulates the pressure of a supplied gas in the middle of a gas passage and is integrally provided with a solenoid valve.

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 stove 2 is opened, and at the same time, the igniter 4, which is turned on by the micro switch 3, is operated, 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 in response to a signal from a microcomputer (not shown), and gas flows from the gas tank 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 fire and a thermoelectromotive force is generated, which causes the first solenoid valve 11 and the second
The solenoid valves 12 are sequentially opened. As is clear from this example, the governor 9 and the solenoid valves 7, 11,
12 and in the electromagnetic valve itself, the connection port and the main body of the electromagnetic valve had to be made larger, and therefore the diameter of the piping itself had to be made larger.
In other words, the size of the equipment itself has become larger.

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

The gas pressure regulator of the present invention includes a gas pressure regulator having a spring that biases a diaphragm, a governor valve interlocked with the diaphragm, an original solenoid valve provided in the middle of a path on the primary pressure side, and a secondary solenoid valve. A solenoid valve provided in the middle of a passage on the pressure side and a pilot gas passage provided on the secondary pressure side, the passage communicating with the solenoid valve and the connecting portion between the pilot passage and the secondary pressure chamber are connected to the diaphragm. The governor valve is arranged substantially perpendicular to and substantially concentrically with respect to the operating direction of the governor valve, the original solenoid valve, and the second solenoid valve.
The operating directions of the solenoid valves provided on the secondary pressure side are arranged in the same direction, and the gas inlet, the main valve seat, the gas passage on the primary pressure side, the gas valve seat, the governor valve seat, the pressure receiving surface, and the gas on the secondary pressure side. The passage, each valve seat, the pilot passage, and each gas outlet are configured as an integrally molded product, which simplifies the circuit structure and makes the whole smaller and lighter, resulting in low cost and high durability. It is.

An embodiment of the present invention will be described below based on the drawings.

In FIGS. 2 and 3, the gas pressure regulator 13 has a gas inlet 15 at one end of a body 14 made of aluminum die-casting. In the middle of the gas passage 17 on the primary pressure side from the gas inlet 15 to the governor valve 16, a main valve seat 20 is provided which is opened and closed by an on-off valve 19 of a main solenoid valve 18. 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 2
5 as well as the governor valve 16 and diaphragm 21
The gas pressure adjustment section 26 is configured by the following. At the periphery of the secondary pressure chamber 27 corresponding to the pressure receiving surface 21a of the diaphragm 21, secondary pressure side gas passages A28 and B29 are arranged approximately concentrically with the diaphragm 21 and approximately perpendicular to the diaphragm 21, and gas passages A28 and B29 are provided on the diaphragm 21, 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 not provided in the passage facing the secondary pressure chamber, and the valve seats are arranged so that they always move in the direction of closing the valve cover when gas pressure is applied. It is located at A35. The original solenoid valve 19, the first solenoid valve 32, and the second solenoid valve 3
3 is fastened to the body 14 with screws 38 and sealed with an O-ring 39 together with an upper plate 37 airtightly provided on the body 14 via a gasket 36. On the other hand, the lower plate 40 on the opposite side is also airtightly connected to the body 1 through the gasket 41.
4. The governor cap 42 is provided on the body 14 using the outer peripheral edge of the diaphragm 21 as a gasket.

The first solenoid valve 32 and the second solenoid valve 33 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 on the center line and at a position facing the pressure receiving surface 21a of the diaphragm 21.

In the above configuration, when the main solenoid valve 18 is operated in conjunction with the ignition operation and the main valve seat 20 is opened, the gas entering from the gas inlet 15 is transferred to the gas passage 1 on the primary pressure side.
7, flows into the secondary pressure chamber 27 through 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. Further, the gas flows from the secondary pressure chamber 27 through the pilot gas passage 43 to a pilot burner (not shown) and is ignited.
In this state, the first solenoid valve 32 and the second solenoid valve 33
When the gas is opened, the gas flows from the gas passages A28 and B29 to gas outlets A30 and B31, respectively, and is supplied to each main burner (not shown), where it is ignited by the flame 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, and therefore, the first and second solenoid valves 32 and 33 themselves can be downsized, and the gas circuit The device itself can be made simpler and smaller, for example, to reduce thermal effects or to make the device smaller or lighter. Furthermore, the gas passages A28 and B29 to 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 21a of the diaphragm 21 in a substantially perpendicular direction. In terms of manufacturing and processing of the body 14, the pins are easy to pull out and processing is easy. Also, when gas pressure is applied, the first on-off valve 34
always operates in the direction of closing the valve seat A35, ensuring high safety.

As described above, according to the present invention, by integrally configuring the governor, the plurality of solenoid valves, and the pilot gas passage, pressure loss on the piping is reduced, and the solenoid valve is made smaller than the conventional solenoid valve. In addition to simplifying and downsizing the entire circuit, the governor and multiple solenoid valves have a control mechanism in one main body, so there is no need for elbows or flanges to connect each control mechanism, preventing gas leaks. The risks such as these have been greatly reduced. In addition, the pilot gas passage and the gas passages to the multiple solenoid valves are arranged almost perpendicular to the pressure-receiving surface of the diaphragm and concentrically, making die-casting easy, and the pressure loss is extremely low, further improving the governor's performance. For example, if the valves of solenoid valves operate in the same direction, for example, if the valve operates in the direction of gravity, one side wear due to eccentricity and gravity, hysteresis characteristics, and durability will be improved compared to when the valve operates in the horizontal direction. do. Furthermore, since the main body can be integrally molded, it is possible to provide a gas pressure regulating device that has many effects, such as easy die-casting, reduced number of parts, and easy assembly.

[Brief explanation of the drawing]

Fig. 1 is a gas circuit diagram using a conventional gas pressure regulating device, Fig. 2 is a partially cutaway plan view of a gas pressure regulating device which is an embodiment of the present invention, and Fig. 3 is a diagram showing the X in Fig. 2. FIG. 15...Gas inlet, 16...Governor valve, 18...
... Original solenoid valve, 21 ... Diaphragm, 26 ... Gas pressure adjustment section, 27 ... Secondary pressure chamber, 28, 29 ...
Gas passage, 30, 31... gas outlet, 32... first solenoid valve, 33... second solenoid valve, 43... pilot gas passage.

Claims (1)

[Claims] 1. A gas pressure adjustment section having a spring that biases a diaphragm and a governor valve interlocked with the diaphragm, an original solenoid valve provided in the middle of a passage on the primary pressure side, and a solenoid valve provided on the secondary pressure side. , a pilot gas passage provided on the secondary pressure side, and a passage communicating with the solenoid valve and a connecting portion between the pilot gas passage and the secondary pressure chamber are substantially perpendicular to the diaphragm and on a substantially concentric circle. and the operating direction of the governor valve, the operating direction of the solenoid valve provided on the main solenoid valve, and the solenoid valve provided on the secondary pressure side are arranged in the same direction, and the gas inlet, the main valve seat, and the primary Pressure side gas passage, governor valve seat, pressure receiving surface and 2
A gas pressure regulator in which the gas passage on the next pressure side, each valve seat, the pilot passage, and each gas outlet are integrally molded.