KR200399807Y1 - Gas cutoff apparatus - Google Patents

Abstract

The gas circuit breaker according to the present invention forms a predetermined space between the lower housing 20 and the lower housing 20 fixed on the shutoff valve 2 installed in the gas supply pipe 1, and the front of the lower housing 20. An upper housing 10 coupled to the upper housing 10, an adjustment housing 30 installed in the front of the upper housing 10 so as to be rotatable and linear in the front and rear directions, and one end of which extends rearward through the lower housing 20. And coupled to the shut-off valve 2, and the other end penetrates through the upper housing 10 to be coupled to the center of the inner surface of the adjusting housing 30, thereby opening and closing the shut-off valve 2 while rotating according to the rotation of the upper housing 10. The adjustment member 40 and the motor 50 which selectively rotate-drive the adjustment member 40 are provided. The adjusting member 40 is selectively connected to the motor 50 while moving in association with the front and rear linear motion of the adjusting housing 30. In such a gas circuit breaker, when the adjusting member 40 is connected to the motor 50, the shutoff valve 2 is automatically opened and closed by turning by the operation of the motor 50, and the user is separated from the motor 50. As the manual rotation of the adjustment housing 30 is rotated in conjunction with the shutoff valve (2) to open and close.

Description

Gas cutoff apparatus

The present invention relates to a gas circuit breaker for supplying or blocking a gas supplied to an apparatus using a gas such as a gas range or a gas boiler, and more particularly, to a gas circuit breaker capable of automatic and manual operation.

In general, a cooking apparatus such as a gas range, a gas oven using a gas such as LPG, LNG, or a heating apparatus such as a gas boiler is widely used. Such gas equipment is connected to the outdoor gas tank or the gas tank of the city gas construction by pipes to receive gas, and a shutoff valve is installed between the gas device and the outdoor gas tank or the gas device and the gas tank of the city gas construction. This allows the user to choose the gas supply and shut off.

When cooking using a gas range, the user opens the shutoff valve to supply gas to the gas appliance, ignites the gas supplied using the ignition device installed in the gas appliance, and after the use of the gas appliance is completed, Close and extinguish the ignition device installed in the gas appliance, and shut off the gas supply by closing the shut-off valve. In other words, when gas leaks from gas equipment, there is a risk of explosion, etc., so that an intermediate shut-off valve is installed in the ignition device and gas pipe installed in the gas equipment to perform secondary gas shut-off even when the gas range is not used. do.

However, when the gas range is not used, the gas does not leak when there is no abnormality in the gas range, so it may be inadvertent to shut off the gas by operating the stop shutoff valve. Due to the drawback, the shutoff valve is always open and there is a problem of frequently using a gas device using only an ignition device, so that a gas accident is easily exposed.

Therefore, in order to prevent a gas leakage accident or fire when using a gas range, various types of gas circuit breakers that detect gas leaks, flames, overheating conditions, etc. are automatically shut off to shut off the gas or extinguish the gas range. have.

However, the conventional gas circuit breaker can open and close the shut-off valve automatically by the operation of the motor in most cases, the manual operation has a structure that is impossible, the problem that can not open and close the shut-off valve because the motor can not operate during power failure There was this.

The present invention was developed in order to solve the above-mentioned problems, and an object of the present invention is to provide a gas circuit breaker that can safely shut off a gas even in an emergency such as a power failure because the shutoff valve can be opened and closed automatically and manually.

An object of the present invention as described above, the lower housing is fixed on the shut-off valve installed in the gas supply pipe, the upper housing coupled to the front of the lower housing while forming a predetermined space between the lower housing and the front of the upper housing Adjusting housing is installed to be capable of rotational movement and linear movement in the front and rear direction, one end is extended to the rear through the lower housing is coupled to the shut-off valve, the other end penetrates the upper housing to the center of the inner surface of the adjusting housing By combining, it is achieved by providing a gas circuit breaker including an adjusting member for opening and closing the shut-off valve while rotating in accordance with the rotation of the upper housing, and a motor for rotationally driving the adjusting member. The adjusting member is selectively connected to the motor while moving in association with the front and rear linear motion of the adjusting housing. When the adjusting member is connected to the motor, the shutoff valve is automatically opened and closed by rotating by the operation of the motor. In the separated state, the shutoff valve is rotated by interlocking as the user manually rotates the adjusting housing. Open and close.

In order to selectively connect the motor and the adjusting member, a driving wheel may be provided between the motor and the adjusting member. A plurality of seating grooves are formed on an inner circumference of the driving wheel, and a pair of guide bars protrude from side to side on the side of the adjustment member. When the adjusting member moves linearly in the front and rear direction through the rotation center of the driving wheel, the guide bar is seated in or is separated from the seating groove of the driving wheel, so that the adjusting member and the driving wheel are connected or separated from each other. do.

On the other hand, in order to transmit power from the motor to the drive wheel, a worm gear is coupled to the output shaft of the motor, a gear is formed at a predetermined angle on the outer circumference of the drive wheel, a plurality of reduction gear is provided between the worm gear and the drive wheel. Can be connected in turn.

In addition, the gas circuit breaker according to the present invention, in order to control the amount of rotation of the drive wheel, a pair of limit switches are installed at intervals of 90 degrees along the rotational trajectory of the drive wheel, and the drive to contact the limit switch It may further include a sensing protrusion protruding on the outer circumferential surface of the wheel.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

1 is an exploded perspective view of a gas circuit breaker according to the present invention, Figure 2 is a perspective view showing a part cut in the gas circuit breaker coupled state.

1 and 2, the gas circuit breaker according to the present invention, the lower housing 20 and the lower housing 20 is fixed between the lower housing 20 is fixed to the shut-off valve 2 installed in the gas supply pipe (1) The upper housing 10 coupled to the front of the lower housing 20 while forming a space, the adjusting housing 30 installed in the front direction of the upper housing 10 so as to be capable of rotating and linearly moving forward and backward, and one end of the lower housing. It extends to the rear through the (20) is coupled to the shut-off valve (2), the other end is provided with an adjusting member 40 is coupled to the inner surface center portion of the adjustment housing 30 through the upper housing (10). The shutoff valve 2 is selectively rotated to an open or closed position in association with the rotation of the adjustment housing 30 and the adjustment member 40.

The upper housing 10, the lower housing 20, and the adjusting housing 30 all have a rectangular box shape. For the rotatable coupling of the upper housing 10 and the adjustment housing 30, a cylindrical coupling protrusion 11 protrudes from the front surface of the upper housing 10. Although not specifically illustrated in the drawings, the inner side of the adjusting housing 30 has a cylindrical coupling groove having an inner diameter slightly larger than the outer diameter of the coupling protrusion 11 so that the coupling protrusion 11 may be inserted with a predetermined clearance. Is formed.

Through-holes 12 and 32 are formed in the centers of the upper housing 10 and the adjusting housing 30 so that the tip portion 42 of the adjusting member 40 can pass therethrough. The fastener 35 is inserted into and fixed to the through hole 32 of the adjustment housing 30 from the opposite side of the adjustment member 40. The fastener 35 is coupled to the front end portion 42 of the adjustment member 40, so that the front end portion 42 of the adjustment member 40 is fixed to the adjustment housing 30. The front end portion 42 of the adjustment member 40 has a shape in which both sides of the adjustment member 40 are vertically cut off from the cylinder, and the fastener 35 has an inner circumferential surface corresponding to the shape of the front end portion 42 of the adjustment member 40. A bushing 36 having a shape is provided.

On the other hand, the rear end 43 of the adjustment member 40 is formed with a fitting groove 44 extending in the longitudinal direction of the adjustment member 40 so that the handle (2a) of the shut-off valve (2) can be fitted. The fitting groove 44 is formed to a depth such that the entire length of the handle 2a of the shutoff valve 2 can be sufficiently inserted, so that even if the adjusting member 40 moves forward and backward by a predetermined length, the handle 2a is provided. Do not deviate from the.

In the space between the upper housing 10 and the lower housing 20, a motor 50 for electrically driving the adjusting member 40, and receiving power from the motor 50 to selectively rotate the adjusting member 40. The drive wheel 60 is provided.

The adjusting member 40 is selectively connected to the driving wheel 60 by penetrating the center of rotation of the driving wheel 60 in a linear motion in the front and rear directions. In order to selectively connect the adjustment member 40 and the driving wheel 60, a plurality of seating grooves 61 are formed on the inner circumference of the driving wheel 60, and a pair of guide bars on the side of the adjustment member 40 is provided. 41 is formed to protrude from side to side. When the adjustment member 40 linearly moves in the front and rear direction, the guide bar 41 is seated in the seating groove 61 of the driving wheel 60 or is separated from the seating groove 61, thereby driving the adjustment member 40 and the drive. The wheels 52 are connected or spaced apart from each other. When the motor 50 is driven while the adjusting member 40 is connected to the driving wheel 60, the adjusting member 40 also rotates according to the rotation of the driving wheel 60, and thus the shutoff valve 2. Will rotate to the open or closed position.

In order to transmit power from the motor 50 to the driving wheel 60, a worm gear 51 is coupled to the output shaft of the motor 50, and gears 62 are formed at a predetermined angle on the outer circumference of the driving wheel 60. . A plurality of reduction gears 71, 72, 73, 74, 75 are sequentially connected between the worm gear 51 and the drive wheel 60 to reduce the rotational force of the motor 50 and transmit the deceleration force to the drive wheel 60.

The amount of rotation of the drive wheel 60 is sensed by the pair of limit switches 81 and 82 and adjusted to an amount necessary to open and close the shutoff valve 2. The pair of limit switches 81 and 82 are installed at intervals of 90 degrees along the rotational trajectory of the driving wheel 60, and the sensing protrusions that contact the limit switches 81 and 82 on the outer circumferential surface of the driving wheel 60. 63 is formed to protrude. As the driving wheel 60 rotates, the sensing protrusion 63 selectively contacts the pair of limit switches 81 and 82 to detect the amount of rotation of the driving wheel 60, and the detection result is a motor ( By feeding back to 50, the driving of the motor 50 is controlled.

Hereinafter, automatic and manual operation of such a gas circuit breaker will be described.

3A and 3B are diagrams for describing an automatic operation method. For automatic operation, the guide bar 41 of the adjustment member 40 is seated in the seating groove 61 of the drive wheel 60, whereby the adjustment member 40 rotates in conjunction with the drive wheel 60 The shutoff valve 2 is opened and closed. 3A illustrates a state in which the shutoff valve 2 is opened (that is, a gas supply state), in which the sensing protrusion 63 of the driving wheel 60 is in contact with the first limit switch 81. . In this state, when a gas leak is detected by a gas sensor (not shown) or an abnormality of other gas equipment is detected, the result is transmitted to the motor 50 to drive the motor 50. According to the driving of the motor 50, as shown in FIG. 3B, when the driving wheel 60 rotates by 90 degrees in the counterclockwise direction, the adjusting member 40 also rotates by 90 degrees so that the shutoff valve 2 is also It turns to the closed position to cut off the gas supply to the gas equipment. At this time, the sensing protrusion 63 comes into contact with the second limit switch 82, and accordingly a signal from the second limit switch 82 is fed back to the motor 50 to stop the driving of the motor 50.

Next, a manual operation method is explained with reference to FIG. As shown in FIG. 4, when manual operation of the gas circuit breaker is necessary for a power failure or the like, the user pulls the adjustment housing 30 forward. Then, the guide bar 41 of the adjustment member 40 is separated from the seating groove 61 of the drive wheel 60, so that the adjustment member 40 is separated from the drive wheel 60 can be rotated independently. . As such, when the user rotates the adjusting housing 30 in a state in which the adjusting member 40 is separated from the driving wheel 60, the adjusting member 40 interlocks to rotate to open and close the shutoff valve 2. .

As described above, since the gas circuit breaker according to the present invention can be operated by a combination of automatic or manual, it is possible to safely shut off the supply of gas by closing the shutoff valve even in an emergency where automatic operation such as a power failure is impossible.

In the above, specific preferred embodiments of the present invention have been illustrated and described. However, the present invention is not limited to the above-described embodiment, and any person having ordinary knowledge in the technical field to which the present invention belongs without departing from the gist of the present invention claimed in the utility model registration claims. Would be possible.

1 is an exploded perspective view of a gas circuit breaker according to the present invention.

2 is a partially cutaway perspective view of the gas circuit breaker of FIG.

3A is a cross-sectional view of FIG. 2 showing a state in which a shutoff valve is opened.

3B is a cross-sectional view of FIG. 2 showing a state in which a shutoff valve is closed.

4 is a longitudinal cross-sectional view of FIG.

Explanation of symbols on the main parts of the drawings

2: shut-off valve 10: upper housing

20: lower housing 30: adjusting housing

40: adjusting member 41: guide bar

44: fitting groove 50: motor

51: worm gear 60: drive wheel

61: seating groove 63: detection projection

71, 72, 73, 74, 75: reduction gear 81, 82: limit switch

Claims (4)

A lower housing 20 fixed on the shutoff valve 2 installed in the gas supply pipe 1; An upper housing 10 coupled to the front of the lower housing 20 while forming a predetermined space between the lower housing 20; An adjustment housing (30) installed in the front of the upper housing (10) to enable a rotational movement and a linear movement in the front-rear direction; One end penetrates the lower housing 20 and is rearwardly coupled to the shutoff valve 2, and the other end penetrates the upper housing 10 and is coupled to a central portion of the inner side of the adjusting housing 30, thereby providing the upper housing. Adjusting member 40 for opening and closing the shut-off valve (2) while rotating in accordance with the rotation of; And It includes a motor 50 for selectively rotating the adjustment member 40, The adjustment member (40) is a gas circuit breaker, it characterized in that it is selectively connected to the motor (50) while moving in conjunction with the linear movement in the forward and backward direction of the adjustment housing (30). The method of claim 1, Further comprising a drive wheel 60 for selectively transmitting power from the motor 50 to the adjustment member 40 between the motor 50 and the adjustment member 40, A plurality of seating grooves 61 are formed on an inner circumference of the driving wheel 60, and a pair of guide bars 41 protrude from side to side on the side of the adjustment member 40, so that the adjustment member 40 is formed. When the linear movement in the front and rear direction through the center of rotation of the drive wheel 60, the guide bar 41 is seated in the seating groove 61 of the drive wheel 60 or is separated from the seating groove 61 The gas circuit breaker, characterized in that the adjustment member 40 and the driving wheel 52 are connected or separated from each other. The method of claim 2, A worm gear 51 is coupled to the output shaft of the motor 50, and a gear 62 is formed at a predetermined angle on an outer circumference of the drive wheel 60, and between the worm gear 51 and the drive wheel 60. A gas circuit breaker, characterized in that a plurality of reduction gears (71, 72, 73, 74, 75) are connected in sequence. The method of claim 2, A pair of limit switches 81 and 82 installed at intervals of 90 degrees along the rotational trajectory of the drive wheel 60 and protrudes on the outer circumferential surface of the drive wheel 60 to contact the limit switches 81 and 82. Gas breaker, characterized in that it further comprises a detection projection (63) formed.