KR20000010484A - Safety device of gas appliance - Google Patents

Abstract

PURPOSE: A safety device of a gas appliance is provided to automatically stop the supply of the gas to the gas appliance when the gas appliance is turned off while burning. CONSTITUTION: The safety device of a gas appliance is formed by:attaching a body earth terminal(25) having the difference of angle by 90 degrees to the protruded direction of each winding terminal(18, 19); horizontally forming the bottom face(X-X') of the bottom part(26) of a bobbin(16); fixing the body earth terminal on the bottom part of the bobbin using Y-Y' orthogonal to the horizon as a perpendicular line; and bonding the end of the body earth terminal protruded to be inclined on the bottom part of the bobbin onto the slope(27) of a magnet holder(23);:Thereby, the efficiency of working is improved, and the manufacturing cost is reduced.

Description

Gas device safety device

The present invention relates to a safety mechanism for a gas appliance that automatically stops the gas supply to the gas appliance when the gas appliance is turned off during combustion.

Gas appliances, such as table air paths, have been taken to prevent the gas from leaking out for safety when the flame is turned off due to a phenomenon such as being blown out by wind or boiling over.

The conventional apparatus will be described with reference to FIG. Figure 3a mainly shows the combustion system of the gas appliance, Figure 3b mainly shows the operation of the safety device. In FIG. 3A, 1 is a main burner formed in the main body of the air passage, and the ignition burner 2 and the thermocouple 3 are formed at a position close to the main burner.

Gas is supplied to the main burner 1 through the main pipe 4 and to the ignition burner 2 through the auxiliary pipe 5 branched from the main pipe 4. The gas in this case is supplied via the safety device 6.

In the safety device 6, a movable iron core 7 (hereinafter referred to as an amateur) is formed integrally with the solenoid valve 9 via the shaft 8. When the gas is not used, the solenoid valve 9 is press-contacted to the valve seat 11 by the force of the return spring 10 to prevent the inflow of gas. 12 is a fixed iron core (hereinafter referred to as U-shaped iron core) and is connected to the thermocouple 3 via the lead wire 13. 14 is an operation shaft, and 15 of FIG. 3B is a casing.

An overview of the series of operations will be described below. First, when the operation shaft 14 is pressurized upward by a finger at the time of gas ignition, the solenoid valve 9 will move upward while resisting the return spring 10. When the solenoid valve 9 is moved upwards, since a clearance gap arises between the solenoid valve 9 and the valve seat 11, gas is supplied to each site | part through this clearance gap.

On the other hand, this ignition burner 2 is ignited by the gas which flows through the auxiliary pipe 5 simultaneously with the pressurization of the said operation shaft 14, and the main burner 1 by the flame of this ignition burner 2; Is ignited. When the main burner 1 is ignited, this flame heats the thermocouple 3, and after a predetermined time, thermoelectric power is generated. The current 7 by the thermoelectric power excites the U-magnetic core 12 via the lead wire 13 to hold the armature 7 which has been pushed up. As a result, the solenoid valve 9 remains open and gas continues to flow into the main burner 1.

At this time, when a phenomenon such as flowing overflow occurs and the main burner 1 is extinguished, heating by the main burner 1 is stopped with respect to the thermocouple 3. Therefore, since the thermoelectric power of the thermocouple 3 is lost and the maintenance of the armature 7 is released, the solenoid valve 9 is moved downward by the force of the return spring 10, and the gas passage is closed to close the gas flow. Stop it. The above is the whole structure and effect | action.

FIG. 4 is a schematic diagram around the U-shaped core, FIG. 4A is a plan view, and FIG. 4B is a side view (shown from the bottom of FIG. 4A). In addition, although FIG. 4A has a semicircle, in fact, there is a permanent magnet which has the same overall shape with respect to this semicircle, and has a circular shape in the assembled state. That is, the portion shown in Fig. 4A is a winding portion, and an unillustrated portion (omitted portion) formed correspondingly is a magnet portion. However, in Fig. 4, only the winding portion is shown and the others are omitted.

As shown in FIG. 4A, 16 is a bobbin formed around the U-shaped core 12. This bobbin is wound with a winding 17 and has a winding start terminal 18 and a winding end terminal 19.

20 shown in FIG. 4B is a conductor connected to the + terminal, not shown, and is connected to the winding start terminal 18. The body terminal 21 is formed in the lower part of the winding terminal 19, and when this U-shaped core 12 enters the casing 15 like FIG. 3B, the magnet holder located in the lower part (FIG. 4) (Not shown), spot welding is performed at the portion indicated by 22 in FIG. 4A (to be described later).

FIG. 5 is a view showing another conventional U-shaped iron core 12 and a method of installing the body earth. FIG. 5A shows a portion corresponding to FIG. 4B, and FIG. 5B welds the body earth terminal 22. Only the shape of the magnet holder 23, FIG. 5C is a diagram showing how the body earth terminal 22 is welded to the magnet holder 23 in what shape. In order to weld like FIG. 5C, the both sides of the circular magnet holder 23 are made into a straight surface by milling cutter process as shown by 24, and the body earth terminal 22 is welded to this part.

In the above-mentioned conventional apparatus, in the former (FIG. 4), the half-moon-shaped body terminal 21 protrudes in the same direction as each of the winding terminals 18 and 19 of the start terminal and the final terminal, so that each terminal is melted simultaneously. It cannot be attached to a jaw and cannot be deformed (because a hander is attached to each winding terminal 18 and 19 and a hander is also attached to the body earth terminal 22 which protrudes in the same direction), the work efficiency is bad and the cost is high as a result.

Moreover, in the latter (FIG. 5), when welding the body earth terminal 22 to the magnet holder, the head of the magnet holder is once lathed and made into a circular shape, and then it is double-sided by the milling cutter half. Since it is necessary to form a flat part on both side surfaces 24 by processing, like the former, work efficiency is bad and as a result, a cost becomes high.

SUMMARY OF THE INVENTION An object of the present invention is to provide a safety device for a gas appliance that can be efficiently assembled with a simple configuration. A base of a bobbin winding a coil of the fixed iron core, comprising: a safety device for a gas appliance configured of a movable iron core adsorbed to the fixed iron core, the thermoelectric power of a thermocouple applied to the fixed iron core to maintain the movable iron core by itself. When the body earth terminal is fixed to the body earth, the body earth terminal is fixed at an angle difference of at least 90 ° from the protruding direction of each winding start terminal and the winding end terminal, and the end of the body earth is connected to the end of the magnet holder. It was welded to the inclined surface. Therefore, when the winding start terminal and the winding end terminal are simultaneously attached to the melted hand bath and depressed, the body earth terminal makes an angle difference of at least 90 ° with each of the winding terminals, so that no hand is attached thereto, thereby enabling efficient work. .

In the second claim, in the first claim, the body earth terminal sets the base surface of the bobbin as a horizontal line and is fixed at an acute angle with respect to the vertical line with respect to the horizontal line.

BRIEF DESCRIPTION OF THE DRAWINGS The block diagram which shows embodiment around the U-shaped iron core applied to the safety mechanism of a gas appliance.

2 is an overall formation of the safety mechanism of the gas appliance.

3 is a view showing the overall configuration and operation of a conventional apparatus.

4 is a diagram showing a winding start terminal and a winding end terminal, a body earth terminal of a conventional device;

5 shows the attachment of the other winding start terminal and winding end terminal, body earth terminal of the conventional apparatus.

*** Explanation of symbols for main parts of drawing ***

1: main burner 2: ignition burner

3: thermocouple 4: main tube

5: auxiliary pipe 6: safety device

7: movable iron core, amateur 8: shaft

9 solenoid valve 10 return spring

11: valve seat 12: fixed iron core, U-shaped iron core

13 lead wire 14 operation axis

15 casing 16: bobbin

17: winding 18: winding start terminal

19: Final terminal of winding 20: Conductor connected to + terminal

21, 22, 25: body earth terminal 23: magnet holder

24: both sides 26: base

27: slope

BRIEF DESCRIPTION OF THE DRAWINGS It is the block diagram which shows embodiment only of the periphery of the U-shaped iron core applied to the safety mechanism of the gas appliance by this invention. In FIG. 1, the same code | symbol is attached | subjected about the same part as FIG. 4, and description is abbreviate | omitted.

The feature points of the configuration of FIG. 1 in FIG. 4 are that the attachment positions of the body earth terminals 25 are 90 degrees apart from the protruding directions of the respective winding terminals 18, 19 (see FIG. 1A), and the bobbin 16 The base surface (XX ') of the base part 26 of () is made into a horizontal line, the YY' orthogonal to this horizontal line is made into a perpendicular line, and the angle (theta) is made into an acute angle, and the body earth terminal 25 is bobbin | It is fixed to the base part 26 of. In addition, the part shown with the dotted line in the base of the body earth terminal 25 shows the shape in which the body earth terminal is inserted in the base part of a bobbin.

Referring to FIG. 1A, which is a plan view of the bobbin, the protrusion direction of the body earth terminal 25 preferably has a difference of at least 90 ° with respect to the protrusion direction Z of the winding start terminal and the winding end terminals 18, 19. Do. The reason for this is that when the winding start terminal and the winding end terminals 18, 19 are attached to the melted hand bath at the same time and are dumped, the body earth terminal 25 is at least each terminal of the winding start terminal and the winding end terminals 18, 19. This is because a hander is not attached to the body earth terminal because it has an angle of 90 ° to the direction.

2 shows the overall formation diagram, and the symbols shown here are as described above. As can be seen from FIG. 2, the end of the body earth terminal 25 protruding obliquely from the base portion 26 of the bobbin is welded to the inclined surface 27 of the magnet holder 23.

As can be seen in the above embodiment, the body earth end can be very easily welded to the inclined surface of the magnet holder at the bottom after formation.

As described above, according to the present invention, when fixing the body earth to the base of the bobbin, while fixing the body earth by making an angle difference of at least 90 degrees to the protrusion direction of each winding start terminal and the winding end terminal, Since the end portion of the body earth is welded to the inclined surface of the magnet holder, it is possible to provide a safety device for a gas appliance that can be efficiently operated and has a very low cost.

Claims (2)

It is composed of a fixed iron core formed in the case and a movable iron core that is absorbed by the fixed iron core against the return spring in accordance with the pressing operation of the operating shaft, the thermoelectric power of the thermocouple is applied to the fixed iron core to maintain the movable iron itself In the safety device of a gas appliance, when the body earth terminal is fixed to the base of the bobbin winding the coil of the fixed iron core, the body is made to have an angle difference of at least 90 ° from the protruding direction of each winding start terminal and the winding end terminal. A gas device safety device comprising: fixing an earth and welding an end of the body earth to an inclined surface at an end of the magnet holder. 2. The safety device of a gas appliance according to claim 1, wherein the body earth terminal is fixed at an acute angle with a base line of the bobbin as a horizontal line and a vertical line with respect to the horizontal line.