SU1059357A1 - Automatic gas feed equipment unit - Google Patents

Abstract

A GAS AUTOMATIC UNIT containing a thermopar, an igniter and a housing with a gas inlet, a solenoid valve and a control stick with a stem equipped with a blocking valve, characterized in that, in order to simplify the unit and improve its reliability, reduced diameter and forms a choke with a block valve body. (L NW o JV x SD

Description

The invention relates to a power system, namely to the gas thermoelectric automation of household heating appliances.

A device with thermo-electric control is known, which contains an electromagnetic valve with a start button, a thermostat and a plug valve with a mechanical interlock of controls and ignition of the G1 burner.

The disadvantages of such a device are the inefficiency of mechanical interlocking and the presence of a technologically complex non-interconnected conic pair that requires periodic replacement of the lubricant, as well as not sufficiently convenient to assemble the unit.

It is also known a device, the cork valve in which is combined with a thermostatic valve and represents one shut-off device, automatically and manually actuated, the solenoid valve in it is supplemented with a blocking C2,

However, the access of gas to the igniter in the off position in the device is blocked by only one shutter, which is not sufficiently reliable. In addition, the device allows immediately after ignition of the igniter the burner is turned on at full capacity by releasing the handle of the block valve with the thermal valve open, which is to some extent unsafe. The design of the unit is complicated by a separate off button and there is no device in it.

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The closest to the invention in its technical essence is a gas automatics unit comprising a thermocouple, a pilot light and a housing with a gas line with a hole, a solenoid valve and a control stick with a stem, equipped with a blocking valve C3.

However, in the known device there is no manual shut-off device and to turn off the burner, it is necessary to close the tap on stand, there is no valve, which is inconvenient and uneconomical, and when the trigger button is released, the block valve opens for a full gas passage, which leads to a strong flash on the burner; with the release of flame into the room.

The purpose of the invention is to control the unit and increase its reliability in operation.

The goal is achieved by the fact that in a gas automation unit containing a thermocouple, a pilot light and a housing with a gas port, an electromagnetic valve and a reset handle with a stem, equipped with a block valve, a part of the rod is reduced with a reduced diameter and forms a choke with a block valve body.

Fig, 1 shows the block and f connection diagram, section; FIG. 2 shows the position of the valves of the unit during ignition; Fig, 3 - the operating position of the valves of the block; Fig. 4 shows a block valve having spring-loaded grippers.

The gas automatics unit contains a thermocouple 1, a pilot light 2, a sensor 3 tons, a housing 4 with an upper 5 and a lower one. There are gaskets between them and sealing gaskets 7 and 8,

5 a handle 9 with a spring 10 and a latch 11, a blocking valve 12 with a spring 13, mounted on the rod 14, has a groove that can be made with spring grippers 15

0 and without them, a solenoid valve 16 with a bolt 17 and a spring 18, a blocking valve 12 and a thermostatic valve 20 with a mechanism 21 connected to the handle 22 and connected to the thermal bulb 23 in the lid 6 under the the gasket 8 has holes 24 and 25 connected to the sensor 3 and a Q arm (1 2, the automation unit also contains a burner 26, Line 27 additionally schematically shows the direction of gas flow from the hole 19 to the sensor 3 and the pilot 2 through

with choke.

The device works as follows.

Turn the knob 9 to the ignition position, releasing its latch 11, press and open the shutter

0 17. At the same time, between the stem 14 and the hole in the valve 12, an annular gap 28 is formed (Fig. 2), through which the gas enters the holes 19 and through the throttle through line 27 to the lockbox 2, where it is ignited.

The slit 28 acts as a throttle and, if the valve 20 of the unit is not closed, then the gas pressure in the hole 19 drops to almost zero l and the ignition will not occur. Then close the valve 20 with the handle 22 and repeat the ignition.

Handle 9 is kept pressed until the flame from the bedroom heats the thermocouple

5 1 and the EMF produced by it will ensure the open position of the shutter 17 of the solenoid valve 16. The handle -9 is released and it is lifted together with the valve 12 by the spring 10,

0 compressing its weaker spring 13 (figure 2). Smooth rotation of the knob 22 serves gas in the burner 26 (figure 1). Parallel to the igniter, sensor 3 is connected with a normally closed bimetallic valve with a nozzle. Gas

| uh it is not set off. When the knob 9 is released, its rod 14 moves first, and the valve 12 remains stationary due to the spring 18. At the first moment, the annular gap 28 closes for the passage of gas to the igniter, but then the valve 12 is lifted and the opening for the full passage of the gas opens ( FIG. 3). The pilot light continues to burn at the transition moment, this is facilitated by the gas supply in the cavities of the block and the pilot line.

In another embodiment, the valve 12 has spring-loaded clamps 15 (FIG. 4) that interact with the groove of the rod 14 in the ignition position. After releasing the knob 9, the stem 14 rises and simultaneously raises the valve.

With this, the annular gap 28 remains; open until the valve 12 is fully raised, when its stop touches the cover 5. With the further course of the rod 14 under the action of the spring 13, the claws 15 come out of the groove and. release him.

To turn the burner off briefly, the knob 22 is turned to the closed position. To completely turn off the unit, press knob 9 and

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rotation fix it in an intermediate position using the latch 11 (figure 1). In this position, the valve 12 closes the gas access to the burner and the igniter. After the cooling of the lopar telescope, the electromagnetic valve 16 is actuated and its valve 17 additionally closes the gas-conducting two-seat opening 19. Automatic shutdown

in the block occurs when the igniter is extinguished or a violation of gi. AT ,. In the latter case, the nozzle of sensor 3 opens and resets the gas, acts through the throttle to the spark plug, which leads to its extinction, cooling of the thermocouple and closing the opening 19, shut the valve 17. This embodiment of the unit improves its safety

with the exception of simultaneous ignition of the burner and igniter during the initial ignition.

The proposed unit design, besides the noted advantages, is highly cohesive, it is achieved by combining additional functions on the control knob and blocking valve. These advantages result in savings in materials and labor.

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Claims (1)

A GAS AUTOMATIC UNIT containing a thermocouple, an igniter and a housing with a gas distribution hole, an electromagnetic valve and a control handle with a rod equipped with a blocking valve, characterized in that, in order to simplify the unit and increase its reliability in operation, part of the rod is made with a reduced diameter ” ! and forms a throttle body lock valve. ABOUT SU ,,, 1059357>