CN112577076A

CN112577076A - Safety linkage device of gas valve for gas stove

Info

Publication number: CN112577076A
Application number: CN202011611926.6A
Authority: CN
Inventors: 俞银德
Original assignee: Yu Roubing
Current assignee: Yu Roubing
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-03-30
Anticipated expiration: 2040-12-30
Also published as: CN112577076B

Abstract

A safety linkage device of a gas valve for a gas stove comprises a linkage wheel and a linkage arm which are respectively connected with a second valve and a first valve, wherein the linkage wheel is connected with the linkage arm, so that the second valve can not be opened under the condition that the first valve is not opened, and mixed gas of air and gas is not supplied to a main combustion burner to pollute the environment or cause detonation or fire under the condition that a normally open flame burner does not generate combustion.

Description

Safety linkage device of gas valve for gas stove

Technical Field

The invention relates to a gas stove, in particular to a safety linkage device of a gas valve for the gas stove.

Background

A normally open flame burner and a main combustion burner are arranged in a hearth of an existing gas stove, and gas provided for the normally open flame burner and the main combustion burner is controlled through a normally open flame gas valve and a main gas valve respectively.

When the existing gas stove is used, the fan is started firstly, and pressure air is conveyed to the normally open flame burner and the main combustion burner; then, fully opening the normally open fire gas valve, delivering pressure gas to the normally open fire burner, and simultaneously, automatically starting electric ignition to ignite the mixed gas of air and gas sprayed from the normally open fire burner, and igniting the normally open fire burner; then, the main gas valve is opened to supply pressure gas to the main combustion burner, the mixed gas of air and gas sprayed from the main combustion burner is ignited by normal open fire to carry out normal combustion, the opening degree of the main gas valve is manually adjusted, the combustion intensity of the main combustion burner can be controlled according to the requirement of cooking on the firepower, the main gas valve is manually closed to finish the cooking, but the normal open fire gas valve is not closed simultaneously, so that the normal open fire burner is kept in a normal open fire combustion state, and thus, the main gas valve can be ensured to be manually opened, the main combustion burner can immediately carry out normal combustion, and the next cooking can be carried out immediately.

Sometimes, the situation occurs that although the normally open gas valve is fully opened, the normally open gas burner is not successfully ignited, when the normally open gas valve is not found, the main gas valve is manually opened, and a large amount of mixed gas of air and gas is sprayed out from the main combustion burner and overflows from a hearth into a kitchen, so that firstly, the environment is polluted, and secondly, if the mixed gas is ignited by other fire sources, the detonation or the fire disaster is caused.

Disclosure of Invention

The invention provides a safe linkage device of a gas valve for a gas stove, aiming at solving the technical problems that the ignition of a normally open flame burner of the existing gas stove is not successful, and when the ignition is not successful, a main gas valve is manually opened, and a large amount of mixed gas of air and gas is sprayed out from the main combustion burner, so that the environment is polluted, and the detonation or fire is caused.

The invention relates to a safety linkage device of a gas valve for a gas stove, which comprises:

a first valve for controlling the gas supplied to the normally open flame burner;

a second valve for controlling the gas supplied to the main combustion burner;

it is characterized in that the utility model also has:

the linkage wheel is provided with a through hole and a long groove hole, is arranged on the second valve by virtue of the through hole and synchronously rotates with a hand wheel or a handle for controlling the opening degree of the second valve;

a linkage arm, which is provided with a first arm, a second arm and a pin shaft; the first end part of the first arm is provided with a through hole, the first end part of the second arm is fixedly connected with the pin shaft, and the second end part of the first arm is hinged with the second end part of the second arm; the first arm is arranged on the first valve by virtue of the through hole and synchronously rotates with a hand wheel or a handle for controlling the opening degree of the first valve; the pin shaft extends into the elongated slot of the linkage wheel and can slide along the elongated slot.

According to the safety linkage device of the gas valve for the gas stove, the linkage wheel and the linkage arm are respectively connected with the second valve and the first valve, and the linkage wheel is connected with the linkage arm, so that the second valve cannot be opened under the condition that the first valve is not opened, and mixed gas of air and gas is not supplied to a main combustion burner under the condition that a normally open flame burner does not burn, the environment is polluted, or explosion or fire is caused.

Drawings

FIG. 1 is a schematic front view of the normally open gas valve and the main combustion gas valve of the safety linkage of the gas valve for a gas range of the present invention in a closed state before the ignition of the normally open burner;

FIG. 2 is a rear view of the safety linkage of the gas valve for a gas range of the present invention with both the normally open gas valve and the main combustion gas valve in a closed state and before ignition of the normally open burner;

FIG. 3 is a front schematic view of the normally open gas valve in the safety linkage for gas cooktop gas valves of the present invention in a maximum open state, with the main combustion gas valve in a closed state, but with the normally open burner failed to ignite;

FIG. 4 is a rear view of the normally open gas valve in the safety linkage for gas cookers of the present invention in a maximum open position, with the main combustion gas valve in a closed position, but with the normally open burner not firing;

FIG. 5 is a front schematic view of the normally open gas valve and the main combustion gas valve of the safety linkage of the gas valve for a gas range of the present invention in a maximum open state when the main burner is performing maximum combustion;

FIG. 6 is a rear view of the safety linkage of the gas valve for a gas range of the present invention with both the normally open gas valve and the main combustion gas valve in a maximum open state and with the main burner performing maximum combustion;

FIG. 7 is a schematic cross-sectional view taken along line a-a of FIG. 1;

FIG. 8 is a schematic cross-sectional view taken along line b-b of FIG. 1;

FIG. 9 is a schematic cross-sectional view taken along line c-c of FIG. 1;

FIG. 10 is a schematic cross-sectional view taken along line d-d of FIG. 5;

FIG. 11 is a schematic cross-sectional view taken along line e-e of FIG. 5;

fig. 12 is a schematic cross-sectional view taken along line f-f in fig. 5.

Detailed Description

The features and advantages of the safety linkage of the gas valve for a gas range of the present invention will become more apparent from the following detailed description of the embodiments of the safety linkage of the gas valve for a gas range of the present invention with reference to the accompanying drawings.

Referring to fig. 1 and 2, the safety linkage 100 of a gas valve for a gas range of the present invention has a ball valve 1 for controlling gas of a normally open fire, a ball valve 2 for controlling gas of a main gas, a tee pipe 3, a linkage arm 4, a linkage wheel 5, and a first nut-stud-nut assembly 6.

Referring to fig. 7 and 9, the ball valve 1 has a valve body 11, a ball valve core 12A, a valve stem 13, two seal rings 14, an O-ring 15, an elastic pad 16, and a pressure sleeve 17.

The valve body 11 has an inlet portion 111, a valve seat portion 112 and an outlet portion 113. The outlet portion 113 is fixedly connected to the valve seat portion 112 by bolts (not shown). The valve seat portion 112 is formed integrally with the inlet portion 111. The valve seat portion 112 has a cylindrical portion 114. The valve seat portion 112 is formed integrally with the cylindrical portion 114. A threaded hole is formed in a part of the inner wall of the cylindrical portion 114, and the threaded hole communicates with the inner cavity of the valve seat portion 112.

The ball valve core 12A has a central passage 120. The top of the ball valve spool 12A has a recess 123.

The valve stem 13 has a rectangular boss 131 at a front end thereof and male threads at a rear end thereof.

The valve stem 13 is located in the central bore of the press sleeve 17. The male thread on the outer wall of the pressure sleeve 17 engages with the female thread on the inner wall of the cylindrical portion 114 of the valve seat portion 112. A rectangular parallelepiped boss 131 at the front end of the valve stem 13 is fitted into a recess 123 at the top of the ball valve element 12A. The O-ring 15 is pressed between an annular outer flange of the leading end portion of the valve stem 13 and an annular inner flange of the cylindrical portion 114 of the valve seat portion 112. The elastic pad 16 is pressed between the front end surface of the pressure sleeve 17 and the annular inner flange of the cylindrical portion 114 of the valve seat portion 112.

Referring to fig. 8 and 9, the ball valve 1 further has a stop collar 18, an intermediate nut 19, a bolt 20 and a handle 21.

The front sleeve portion of the stop collar 18 has two projections 181 and the outer wall of the rear sleeve portion has an external spline rib 182. The inner wall of the sleeve portion of the handle 21 has an internal spline groove 211.

The front sleeve portion of the stop collar 18 fits over the outer wall of the cylindrical portion 114 of the valve seat portion 112. An intermediate nut 19 is located within the rear sleeve portion of the stop collar 18. The front female thread of the intermediate nut 19 engages with the male thread of the rear end of the valve stem 13. The sleeve portion of the handle 21 fits over the rear sleeve portion of the stop collar 18 with the male spline projections 182 located in the female spline grooves 211. The male thread of the bolt 20 engages the female thread of the rear part of the intermediate nut 19, fixing the handle 21 to the stop collar 18.

The handle 21 is rotated, the limiting sleeve 18, the middle nut 19, the bolt 20 and the valve rod 13 rotate together, and the valve rod 13 drives the spherical valve core 12A to rotate, so that the opening of the ball valve 1 is adjusted. The outer wall of the cylindrical portion 114 of the valve seat portion 112 has a limit stop, which indicates that the ball valve 1 is in a closed state when one projection 181 of the front sleeve portion of the stop collar 18 collides with the limit stop, and indicates that the ball valve 1 is in a fully opened state when the other projection 181 of the front sleeve portion of the stop collar 18 collides with the limit stop.

Referring to fig. 8 and 9, the construction of the ball valve 2 is largely the same as that of the ball valve 1, and like parts are denoted by like reference numerals and will not be described repeatedly. The construction of the ball valve 2 differs from that of the ball valve 1 in that the ball valve core 12B has a central passage which is formed by a circular bore portion 121 and a rectangular bore portion 122, the diameter of the circular bore portion 121 being greater than the length of the rectangular bore portion 122.

Referring to fig. 1, 2 and 9, the linking arm 4 has a first arm plate 41 having a circular through hole at one end thereof and a second arm plate 42 having an arc-shaped end portion, the non-circular through hole end portion of the first arm plate 41 and the non-arc-shaped end portion of the second arm plate 42 are hingedly connected by a bolt-nut assembly 43, and the first arm plate 41 has a protrusion 411.

Referring to fig. 1, 2 and 9, the interlocking wheel 5 is composed of a circular plate portion and a triangular plate portion formed by extending radially outward from an upper edge of the circular plate portion. The circular plate part of the linkage wheel 5 is provided with a central circular through hole 52, and the triangular plate part is provided with a long slotted hole 51 parallel to the long side of the triangle.

Referring to fig. 1 and 2 and fig. 7 to 9, in order to connect the above components, a bracket 10 made of angle steel is provided, and stainless steel plates 9 are welded to the front end surface, the top end surface, the bottom end surface, the left side end surface and the right side end surface of the bracket 10. The stainless steel plate 9 welded on the front end surface of the bracket 10 has a through hole 91 at the lower part and a triangular through hole 92 at the middle part.

Referring to fig. 1 and 2 and fig. 7 to 9, the ball valve 2 is mounted on the stainless plate 9 via a through hole 91 welded to the lower portion of the stainless plate 9 on the front end surface of the holder 10. One outlet end of the tee pipe 3 is connected with an inlet portion 111 of the ball valve 2, the other outlet end is connected with the inlet portion 111 of the ball valve 1, an outlet portion 113 of the ball valve 2 is connected with a gas supply pipe (not shown) of a main combustion burner, and the outlet portion 113 of the ball valve 1 is connected with a gas supply pipe (not shown) of a normally open flame burner.

The first arm plate 41 of the linkage arm 4 is fixedly arranged on the limiting sleeve 18 of the ball valve 1 by virtue of a circular through hole formed in one end part of the first arm plate, the rotating handle 21 of the ball valve 1 is rotated, the limiting sleeve 18, the middle nut 19, the bolt 20, the valve rod 13 of the ball valve 1 and the first arm plate 41 of the linkage arm 4 simultaneously rotate together, and the valve rod 13 drives the spherical valve core 12A to rotate, so that the opening degree of the ball valve 1 is adjusted.

The linkage wheel 5 is fixedly arranged on the limiting sleeve 18 of the ball valve 2 by means of a central circular through hole 52 of a circular plate part, the rotating handle 21 of the ball valve 2 is rotated, the limiting sleeve 18, the middle nut 19, the bolt 20, the valve rod 13 and the linkage wheel 5 of the ball valve 2 simultaneously rotate together, and the valve rod 13 drives the spherical valve core 12B to rotate, so that the opening degree of the ball valve 2 is adjusted.

The arc-shaped end part of the second arm plate 42 of the linkage arm 4 is provided with a threaded through hole, one end of a stud bolt in the first nut-stud bolt-nut assembly 6 is screwed into the threaded through hole, a nut is screwed on the exposed part of the end, the other end of the stud bolt firstly passes through a triangular through hole 92 in the middle of a stainless steel plate 9 welded on the front end surface of the support 10 and then passes through a long slot hole 51 of a triangular plate part of the linkage wheel 5, and another nut is screwed on the exposed part of the end, so that the second arm plate 42 of the linkage arm 4 is connected with the linkage wheel 5, and the stud bolt can slide along the long slot hole 51.

In order to cooperate with the operation of the safety linkage 100 of the gas valve for a gas range of the present invention, an ignition sensor 30, a travel switch 40, a gas solenoid valve 50 and a flameout protector 60 are provided.

The ignition needle and the flame burning sensing needle of the ignition sensor 30 are located near the gas nozzle of the normally open flame burner.

The travel switch 40 is installed below the ball valve 1.

The gas solenoid valve 50 is connected to an inlet end of the tee 3.

A flameout protector 60 is mounted below the ball valve 2.

The operation process of the safety linkage 100 of the gas valve for the gas range of the present invention is as follows:

referring to fig. 1 and 2 and fig. 7 to 9, the ball valve 1 and the ball valve 2 are in a closed state, the first arm plate 41 of the linkage arm 4 is in a horizontal position, the second arm plate 42 is in a lowest position, the linkage wheel 5 is in a position where the protrusion 53 of the triangular plate portion thereof protrudes obliquely upward, the stud bolt of the first nut-stud-nut assembly 6 is in a lowest position in the slotted hole 51 of the linkage wheel 5, at this time, the protrusion 411 of the first arm plate 41 of the linkage arm 4 presses the movable arm of the travel switch 40, the travel switch 40 is in a non-electrically connected state, the flameout protector 60 is not supplied with current, the ignition sensor 30 and the gas solenoid valve 50 electrically connected to the flameout protector 60 do not pass current, the gas stove cannot operate, and at the same time, since the stud bolt of the first nut-stud-nut assembly 6 is in a lowest position in the slotted hole 51 of the linkage wheel 5, the linkage wheel 5 is locked, the handle 21 can not rotate, and the ball valve 2 can not be opened.

In the state shown in fig. 1 and 2 and fig. 7 to 9, the ball valve 1 is opened, and the safety linkage 100 of the gas valve for the gas range of the present invention is changed to the state shown in fig. 3 and 4.

Referring to fig. 3 and 4, the ball valve 1 is in a fully open state, the first arm plate 41 of the linkage arm 4 is in a vertical position, the ball valve 2 is in a closed state, the second arm plate 42 is in a highest position, the linkage wheel 5 is in a position where the protruding portion 53 of the triangular plate portion thereof protrudes obliquely upward, the stud bolt of the first nut-stud-nut assembly 6 is positioned at the topmost portion in the slotted hole 51 of the linkage wheel 5, the protruding portion 411 of the first arm plate 41 of the linkage arm 4 is away from the movable arm of the travel switch 40, the travel switch 40 is in an electrically connected state, the ignition inductor 30 and the gas solenoid valve 50 are supplied with current, or due to a failure of the gas solenoid valve 50, a mixture of air and gas is not ejected from the normally open flame burner, or due to a failure of an ignition needle of the ignition inductor 30, no electric spark is generated, and the like, the normally open flame is not successfully ignited, and the normally open flame burner is not combusted, the flame combustion sensing needle of the ignition sensor 30 does not sense flame, the gas electromagnetic valve 50 is automatically closed after 10 seconds of delay, the ball valve 1 is manually closed, the state shown in the figure 1 and the figure 2 and the figures 7 to 9 is recovered, and then the reason that the ignition of the normally open fire is not successful is checked item by item, so that the corresponding fault is eliminated.

After the failure is eliminated, in the state shown in fig. 1 and 2 and fig. 7 to 9, the ball valve 1 is reopened, and the state shown in fig. 3 and 4 is entered, in which the ignition of the normal open fire is successful, and in this state, since the interlocking wheel 5 is in the position where the protruding portion 53 of the triangular plate portion thereof is extended obliquely upward, the stud bolt of the first nut-stud-nut assembly 6 is located at the topmost portion in the slotted hole 51 of the interlocking wheel 5, the interlocking wheel 5 has been unlocked, the handle 21 can be rotated, and at this time, the ball valve 2 is manually opened, the safety interlocking device 100 of the gas stove gas valve of the present invention becomes the state shown in fig. 5 and 6.

Referring to fig. 5 and 6 and fig. 10 to 12, the normally open flame burner maintains a combustion state, the ball valve 2 is opened to a fully open state, the link wheel 5 is rotated by a maximum angle, the second arm plate 42 is located at a middle position, the link wheel 5 is located at a position where the protrusion 53 of the triangular plate portion thereof is extended obliquely downward, the stud of the first nut-stud-nut assembly 6 is located at the lowermost portion in the slotted hole 51 of the link wheel 5, the mixed gas of air and gas is jetted from the main combustion burner and ignited by the normally open flame, the main combustion burner starts to burn and maintains a combustion state, a cook adjusts the opening degree of the ball valve 2 by rotating the rotating handle 21 of the ball valve 2 according to cooking requirements, the link wheel 5 and the second arm plate 42 are changed in position, the ball valve 2 is closed when the cooking is temporarily not performed, the safety link device 100 of the gas valve for the gas stove of the present invention returns to the state shown in fig. 3 and 4, when the cooking is stopped, the ball valve 2 is closed first and then the ball 1 is closed, and the safety interlocking unit 100 of the gas valve for the gas range of the present invention returns to the state shown in fig. 1 and 2 and fig. 7 to 9.

Claims

1. A safety linkage of a gas valve for a gas range, comprising:

a second valve for controlling the gas supplied to the main combustion burner;

it is characterized in that the utility model also has: