KR100223221B1 - Flow rate controller for gas combustion appliances - Google Patents

Abstract

The present invention relates to an ignition flow controller for supplying a sufficient amount of gas during ignition of various gas combustors using gas as a heat source to facilitate ignition of the gas.

According to the present invention, a pilot shaft in which a push button exposed to a front panel of a gas appliance is moved left and right in the linear body in response to a push operation, and a flow passage directed toward the seed exposure side among gas flow paths formed around the pilot shaft inside the linear body. It is formed on the check valve-type push valve installed on the pilot shaft in front of the push valve and moves the push belt during the ignition operation of the push button to open the seed exposure side flow path so that the seed nozzle can supply gas through the seed nozzle. There is a characteristic to having.

Description

Flow controller for ignition of gas combustion equipment

(A) and (b) of FIG. 1 are longitudinal cross-sectional views showing the structure of a flow controller for ignition of a conventional gas combustor.

(a) shows a gas flow path in a combustion state,

(b) shows the gas flow path during ignition.

(A) and (b) of FIG. 2 are longitudinal cross-sectional views showing the structure of the flow controller for ignition of the gas combustor of the present invention.

(a) shows a gas flow path in a combustion state,

(b) shows the gas flow path during ignition.

3 is a detailed view of the main part of the present invention.

* Explanation of symbols for main parts of the drawings

1 push button 3 linear body

5 gas inlet 7 main valve

8: needle valve 9: seed nozzle

10 gas outlet 20 pilot shaft

21: support spring 22: push valve

22a: washer 22b: valve seat

23: stopper ring

The present invention relates to a flow rate controller for ignition of a gas combustor such as a gas range or gas oven using gas as a heat source, and more particularly, a gas flow path directed to a C-nozzle during initial ignition of the gas combustor. The present invention relates to a ignition flow controller for a gas combustor that improves the reliability and durability of a valve by configuring a valve for supplying sufficient gas to a burner by opening the valve.

In general, in various gas appliances that use gas as a heat source, sparks are generated from the spam plug when the ignition knob or button is operated, and the sparks are transferred to the gas supplied to the burner to ignite the burner. It is necessary to supply enough gas to the burner at the beginning of the ignition to ensure that the ignition works well.

Therefore, in most gas combustors, in addition to the gas supply flow path for supplying the gas to the burner at the time of combustion, the ignition gas flow path for supplying a large amount of gas at the time of ignition and the gas through the ignition gas flow path It is equipped with a flow controller for controlling the flow of.

Looking at the flow controller structure of the conventional gas combustion device through a longitudinal cross-sectional view of the gas range flow controller shown in FIG.

First, (a) of FIG. 1 is for a flow controller in a combustion state, (b) is for a flow controller during ignition, and as shown, a conventional flow controller is a front panel (not shown) of the main body of a gas appliance. The pilot shaft 2 is formed in a straight line at the end of the push button 1 which is exposed to the outside, and moves together with the push button 1 in the linear body 3 by the operation of the push button 1. Consists of.

On the end side of the pilot shaft 2, a magnetic power unit 4 connected to a thermocouple installed in a burner (not shown) is installed as a safety device. The gas flowing into the gas inlet 5 through the gas inlet 5 through the drawing (not shown) is configured to be blocked.

In addition, a main valve 7 which is elastically supported by the valve spring 6 is installed in the space portion between the pilot shaft 2 and the linear body 3 to open the gas flow path while moving with the pilot shaft 2. Or shut off, and the gas introduced into the gas flow passage around the pilot shaft 2 past the main valve 7 is formed on the needle valve 8 and the seed nozzle 9 formed on a bifurcated flow passage. After going through the combined structure is supplied to the gas outlet (10).

At this time, the needle valve 8 is coupled to the linear lever 12 driven by the operation of the linear gear 11 formed above the pushbutton 1 to adjust the amount of gas directed to the gas outlet 10. It is configured to.

On the other hand, an O-ring (13) is formed between the pilot shaft (2) and the linear body (3) on the flow path directed to the seed nozzle (9), and the pilot shaft adjacent to the O-ring (13) formation part. In a certain section of (2), a narrow neck portion 2a having a reduced diameter is formed.

In the figure, reference numeral 14 denotes a micro switch for operating the ignition spark during ignition operation of the push button 1, and 15 denotes a wave washer.

The combustion state of the gas combustion apparatus through the conventional flow controller having such a structure, and the operation relationship of the flow controller at the time of ignition and the gas supply flow path will be described. First, in the combustion state as shown in a of FIG. .

As shown, in the case of the combustion state, the push button 1 is slightly pressed, and at this time, the gas introduced into the gas inlet 5 through the main gas pipe is opened through the gas inlet passage 5a as indicated by the arrow. After passing through the main valve (7) maintaining the maintained state, the needle exits through the valve (8) to the gas outlet (10) and is supplied to the burner through the gas supply pipe connected thereto to perform combustion.

At this time, the gas passing through the main valve 7 is directed only to the flow path formed on the needle valve 8 side of the two branch flow paths formed in front thereof, because the flow path toward the seed nozzle 9 is O This is because it is in the state blocked by the ring 13.

That is, in the combustion state, the flow of gas is formed only by the flow path passing through the needle valve 8, and the amount of the gas flow is varied by the needle valve 8 controlled by the linear lever 11 so that the flame intensity of the burner is increased. To be changed.

Next, (b) of FIG. 1 shows the position of the pilot shaft 2 and the gas supply flow path at the time of ignition. As shown, the gas appliance user applies the force F to the pushbutton 1 at the time of ignition. When pressed inward, at the same time the micro switch 14 is ignited to generate sparks in the ignition spark.

At this time, the pilot shaft 2 is pushed inward considerably so that the neck portion 2a coincides with the O-ring 13 forming position so that a gap is formed between the pilot shaft 2 and the O-ring 13. As a result, the flow path toward the seed nozzle 9 is opened. Accordingly, gas introduced into the linear body 3 through the gas inlet 5 passes through the flow path toward the needle valve 8 through the valve 7 and the bifurcated flow path toward the seed nozzle 9. It is then combined at the gas outlet 10 side and supplied to the burner.

As such, when the ignition occurs, a gas flow is formed through the flow path passing through the seed valve 9 in addition to the flow path passing through the needle valve 8, and as a result, a sufficient amount of gas is supplied to the valve during the ignition moment, thereby easily Ignition is performed.

However, in the conventional gas combustor flow controller, when the ignition is open, the flow path to the seed nozzle 9 is opened so that a sufficient amount of gas is supplied to the burner, while the combustion is closed to the needle valve 8. In the case of the O-ring 13 as a kind of opening / closing valve for allowing gas to be supplied only to the flow passage, the passage between the O-ring 13 and the neck portion 2a of the pilot shaft 2 at the time of ignition. When impurities contained in the gas adhere to the surface, and when impurities are attached to the surface of the O-ring 13 in this way, the pilot shaft 2 causes the O-ring to be operated by the operation of the pushbutton 1. There is a problem that the friction force is increased in the process of moving while sliding contact with the (13) to cause the movement of the pilot shaft (2).

In addition, when the combustion state as shown in FIG. 1 (a) lasts for a long time, the lubricating oil between the O-ring 13 and the pilot shaft 2 is pushed out so that the rubber O-ring 13 is moved to the pilot shaft 2. In addition, there is an inconvenience in that a larger force must be applied to the push action of the pushbutton (1). In addition, the valve spring (6) has an O-ring (13) in order for the main valve (7) to operate properly. There is a problem that more force must be applied to the push operation of the push button 1 because it has to be formed to have a strong spring force to overcome the friction force of the).

Accordingly, the present invention is to solve the disadvantages that are pointed out in the conventional ignition flow controller of the gas combustor, by forming a check valve type push valve on the flow path toward the seed nozzle between the pilot shaft and the linear body It is an object of the present invention to provide a flow controller for ignition of a gas combustor in which an ignition operation can be easily performed under high reliability.

An object of the present invention is a pilot valve for moving left and right in the linear body in conjunction with the push button, a check valve type push valve formed on the flow path toward the seed nozzle between the linear body and the pilot shaft, and the pilot shaft in front of the push valve It is achieved by an ignition flow controller structure consisting of a combination of stopper rings mounted on the outer circumferential surface thereof.

At this time, the push valve is a shape that is extrapolated to the outer peripheral surface of the pilot shaft so as to consist of a washer and a valve seat (elevated) is elastically supported by a support spring installed at the rear.

Matters regarding the object and characteristic constitution and effect of the present invention will be clearly understood by the following detailed description with reference to the drawings showing preferred embodiments of the present invention.

First, a (b) of FIG. 2 shows the longitudinal section of the present invention divided into a combustion state and an ignition state, and FIG. 3 is a detailed view of the main part of the present invention. In the drawings, the same parts as in the conventional configuration are denoted by the same reference numerals as in FIG. 1.

As shown, the ignition flow controller of the present invention is installed in a straight line with the push button (1) and the seed nozzle between the linear shaft (3) and the pilot shaft 20 to move left and right inside the linear body ( The check valve type push valve 22 which is elastically supported by the support spring 21 on the flow path toward 9) is mounted.

At this time, the push valve 22 is extrapolated to the pilot shaft 20, and is also extrapolated to the pilot shaft 20 so that one end thereof is fixed to the stepped portion 20a of the pilot shaft 20 ( It is configured to be in contact with the other end of the 21).

The push valve 22 is composed of a washer 22a and a valve seat 22b in contact with the support spring 21, as shown in FIG. 3) The valve seat 22b is maintained in close contact with the stepped surface 3a.

On the other hand, the C-shaped stopper ring 23 is fitted on the outer circumferential surface of the pilot shaft 20 in front of the push valve 22.

Looking at the operation of each mode in the flow controller of the present invention having the above structure as follows.

First, (a) of FIG. 2 shows a combustion state. In the combustion state, the main valve 7 is open and the push valve 22 is closed, so that the linear body is opened through the gas inlet 5. (3) The gas introduced into the interior is directed only to the flow path of the needle valve 8 side via the main valve 7. That is, the push valve 22 at the time of combustion is the valve seat 22b of the push valve 22 by the elasticity of the support spring 21 which acts at the back side, and the pressure of the gas supplied through the main valve 7. As the linear body remains in close contact with the stepped surface 3a, the gas flows along the flow path of the seed nozzle 9 side is completely blocked.

In addition, the valve seat 22b is designed to maintain a state in which the valve seat 22b is in close contact with the shaft outer circumferential surface between the shaft passage hole formed on the valve seat 22b and the outer circumferential surface of the pilot shaft 20, so that the leakage of gas through the valve seat 22b is also suppressed as much as possible. It is done.

Therefore, during combustion, only the gas supplied to the gas outlet 10 via the needle valve 8 is supplied to the burner.

Next, during ignition, the pilot shaft 20 moves to the left in association with the push button 1 as pushed inward as shown in FIG. At this time, in the initial movement of the pilot shaft 20, the push valve 22 is maintained by the elastic force of the support spring 21 while maintaining the original position (a state in which the valve seat is in close contact with the stepped surface). ), The slide valve 22 moves to the left side while compressing the support spring 21 as the stopper ring 23 in front of the push valve 22 is continuously pushed in contact with the valve seat 22b. It moves and eventually opens the flow path toward the seed nozzle 9.

As the flow path toward the seed nozzle 9 is opened in this manner, the gas passing through the main valve 7 flows through both flow paths of the flow path of the needle valve 8 side and the flow path of the seed nozzle 9 side. As such, a large amount of gas introduced through both flow paths is combined at the gas outlet 10 and supplied to the burner, thereby facilitating ignition of the burner.

On the other hand, when the burner and the ignition is completed through the above process, by releasing the push button 1 held down, the pilot shaft 20 is moved to the right side, and the push valve 22 is blocked, so that FIG. The transition is to the combustion state as in (a).

As described above, the flow controller for ignition of the gas combustor of the present invention is a pilot shaft by an O-ring, which is pointed out in the conventional O-ring structure as opening and closing of the seed nozzle side flow path is performed by a push valve in the form of a check valve. Difficulties in forming the neck portion in the shaft are excluded from the O-ring structure, including the problems caused by the restraint, and the convenience of use is expected as the push operation of the button is easily performed even when a small force is applied.

Claims (5)

A pilot shaft movably installed inside the linear body in conjunction with the push button, and a valve means formed on the sea nozzle side flow path between the linear body and the pilot shaft, and mounted on the pilot shaft in front of the valve means, to press the ignition of the push button. The gas combustor is an ignition flow controller, characterized in that it comprises a stopper for moving the valve means during movement of the pilot shaft. The ignition flow controller according to claim 1, wherein the valve means is extrapolated on the pilot shaft and is elastically supported from the rear by an elastic body. 3. The ignition flow controller according to claim 2, wherein the valve means comprises a washer whose back surface is supported by the elastic body and a valve seat which closes the seed nozzle side flow path. 3. The ignition flow controller of claim 2, wherein the elastic body is a spring extrapolated to a pilot shaft. The ignition flow controller of claim 1, wherein the stopper is a C-type ring.