JP3073441B2 - Gas equipment with governor valve - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas appliance having an improved position for mounting a governor valve.

[0002]

2. Description of the Related Art Combustion plate burners are used in grills, gas ovens, gas heaters and the like for table stoves. In the combustion plate type burner, unstable combustion such as a lift of a flame or a suction into a flame hole easily occurs due to a pressure fluctuation of a fuel gas. For this reason, a governor valve for attenuating the pressure fluctuation of the fuel gas is mounted on the valve mechanism for controlling the supply of the fuel gas.

The valve mechanism of a gas appliance has a main valve body having a gas flow passage therein, and is provided with an on-off valve for the gas flow passage. As the on-off valve, a main valve and a safety valve for closing the valve when an abnormality such as a misfire occurs to stop gas supply are used. Downstream of the main valve body, a thermal power regulating valve body having a thermal power regulating valve for regulating the thermal power of the burner from a high thermal power to a low thermal power is connected. A needle valve that is rotated by a heating power adjustment lever and that increases or decreases the valve opening is frequently used as the heating power adjustment valve.

[0004] A governor valve for attenuating the pressure fluctuation of the fuel gas and adjusting the gas flow velocity is interposed between the main valve body and the thermal power control valve body. Since the governor valve uses a rubber diaphragm inside, when it receives heat from the burner, its durability is likely to be reduced and malfunctions are likely to occur.

[0005]

SUMMARY OF THE INVENTION In conventional gas appliances,
Since the governor valve was mounted close to the burner, there was a disadvantage that the governor valve was easily affected by the temperature of the burner. Further, there is a disadvantage that the gas passage is complicated and the pressure loss is large.

SUMMARY OF THE INVENTION An object of the present invention is to increase the distance between a governor valve and a burner and to shield radiant heat so as to be less affected by the temperature of the burner. The object of the invention described in claim 2 or 3 is to improve the operability by arranging the point / fire extinguishing operation unit and the heating power adjustment lever for adjusting the heating power in close proximity to each other, and improving the gas operability. An object of the present invention is to absorb the pressure fluctuation by making the secondary pressure fluctuation of the pressure as small as possible.

[0007]

SUMMARY OF THE INVENTION The present invention provides a burner,
A gas flow path for supplying combustion gas to the burner is provided, and a main valve body provided with an on-off valve for the gas flow path is provided between an outlet of the main valve body and a suction port of the burner. A thermal power regulating valve body provided with a thermal power regulating valve for regulating the thermal power of the burner, and an outlet of the main valve body and an inlet of the thermal power regulating valve body are connected to each other. In a gas appliance comprising a valve mechanism having a provided governor valve, the governor valve is disposed above a front side of a main valve body disposed in the front-rear direction, and the thermal power regulating valve body is disposed above a rear side, The thermal power regulating valve body is disposed between the governor valve and the burner at substantially the same height as the governor valve.

[0008] The gas appliance according to claim 2 comprises a burner,
A gas flow path for supplying combustion gas to the burner; a main valve body provided with a safety valve or a main valve for opening and closing the gas flow path; an outlet of the main valve body and suction of the burner; A thermal power regulating valve body provided with a thermal power regulating valve for regulating the thermal power of the burner from strong to weak by rotating the valve body; A governor valve provided by connecting an outflow port and an inflow port of the thermal power control valve body, a point / fire extinguishing mechanism for opening and closing the safety valve or the main valve, and the thermal power control valve by rotating the valve body And a heating power adjusting lever mechanism for increasing or decreasing the valve opening.

According to a third aspect of the present invention, in the gas appliance, the burner is a grill burner mounted on a grill of a table stove. The gas appliance according to claim 4,
The main valve body is disposed in the housing of the table stove in the front-rear direction, an inlet for fuel gas is provided at a rear portion, and an outlet is formed at an upper surface of a front portion. The governor valve is a governor valve body. Is fastened to a front portion of the main valve body, a governor inflow port opened downward is connected to the outflow port, and a governor outflow port is formed rearward, and the thermal power regulating valve body includes the governor valve body. , And above the rear part of the main valve body, and has an inflow port connected to the governor outflow port at the front part.

[0010]

According to the present invention, the governor valve is disposed above the front side of the main valve body disposed in the front-rear direction, and the thermal power regulating valve body is disposed above the rear side. Since the thermal power regulating valve body is disposed at substantially the same height as the governor valve between the burner and the burner valve, the gap between the governor valve and the burner can be increased, and radiant heat from the burner is shielded by the thermal power regulating valve body. Therefore, the governor valve is not easily affected by the burner temperature or radiant heat.

According to the second or third aspect of the present invention, the operability is excellent because the operation can be arranged within a narrow range. According to the configuration of the fourth aspect, the gas flow path in the valve mechanism is formed by a simple V
It can be shaped like a letter. For this reason, the degree of turning of the fuel gas flow in the gas flow path is small, the pressure loss can be reduced, and the stability of the combustion flame is secured with respect to the fluctuation of the gas pressure at low pressure, and the safety is high.

[0012]

Next, an embodiment of the present invention will be described with reference to the drawings. FIGS. 1 to 3 show a grill burner valve mechanism A provided on a table stove T as a gas appliance. The valve mechanism A includes a point / fire extinguishing mechanism 100 and a governor valve 20.
0, and a thermal power increase / decrease mechanism 300. This valve mechanism A
Is mounted on the right end inside the table stove T shown in FIG. 4, and is a combustion plate type upper grill burner G1 and a grill storage 400 mounted on a ceiling in a grill storage 400 shown in FIG.
It supplies fuel gas to a lower grill burner G2 comprising a pair of pipe burners attached to the lower portions on both sides of the inside.
The heating power increase / decrease mechanism 300 is manually operated by the heating power adjustment lever mechanism 500.

The table stove T is provided with stove burners B1 and B2 on the left and right sides of the upper surface of the housing H, and a grill storage 400 is disposed between the stove burners B1 and B2. The front surface of the housing H is an operation surface.
To operate upper grill burner G1 and lower grill burner G
Dot / fire button 101 for igniting or extinguishing 2
Are urged forward by a spring (not shown) so as to be swingable in the front-rear direction.

Above the point / fire extinguishing button 101 on the operation surface, sliding operation knobs 301 and 302 for operating the heating power adjusting lever mechanism 500 are provided slidably in the left-right direction. In FIG. 4, the slide positions of the slide operation knobs 301 and 302 are such that the right end is extinguishing, the middle is low heating power, and the left end is high heating power.

[0015] As shown in FIG.
A safety valve S and a main valve M are provided therein, and include a cylindrical main valve body 1 horizontally mounted in the front-rear direction. The governor valve body 2 of the governor valve 200 is fastened to the upper surface of the front part (left part in the figure) of the main valve body 1. On the upper surface of the rear part (the right part in the figure) of the main valve body 1,
The thermal power regulating valve body 3 of the thermal power increasing / decreasing mechanism 300 is fastened.

On the front end face of the valve body 1, a switch mechanism 4 operated by a point / fire button 101 is fastened. The switch mechanism 4 includes a switch frame 41 fastened to the front end surface of the main valve body 1 by screws, and a switch body 4 fitted in the switch frame 41 so as to be movable back and forth.
2 is provided.

The switch body 42 is urged forward (to the left in the figure) by a spring 43. When the switch body 42 is pushed from a protruding position (fire extinguishing position), the switch body 42 is pushed in (ignition position).
Reach When the push is released in this state, it is locked at the intermediate position (combustion position) by the push / push mechanism 44 using the heart cam or the deformed heart cam, and when pushed again from the intermediate position, it returns to the original projecting position (fire extinguishing position).

As shown in FIG. 3, the shaft hole 11 of the main valve body 1 has an electromagnet 12 of a safety valve S fitted at a rear portion (right portion in the drawing), and has a gas passage 13 for fuel gas inside.
An inflow port 14 opening downward is provided at a rear portion (left portion in the drawing) of the main valve body 1, and an outflow port 15 opening upward and communicating with the governor valve body 2 is formed at a front portion.

The tip of the switch body 42 is inserted into the shaft hole 11.
The valve stem 5 which is in contact with the tip (the right end in the figure) is inserted to be movable back and forth. The valve stem 5 is urged forward by a spring 51, and is displaced in the front-rear direction in conjunction with a switch body 42 operated by operating the point / fire button 101, and has an effect of opening and closing the gas passage 13. .

The portion of the gas passage 13 where the outlet 15 is provided is formed to have a small diameter to form a valve port 16, and the valve shaft 5
A main valve M is formed together with a flange-shaped main valve body 52 which is fitted to the outside and has a spring 51 provided rearward. A throttle wall 54 is formed between the main valve M and the inlet 14 to form a safety valve S
Is a valve port 55. A collar-shaped safety valve body 56 of the safety valve S is fitted to the rear of the valve stem 5 together with a safety valve spring, and closes the valve port 55 when the valve stem 5 is located on the front side (left side in the figure).

The governor valve body 2 has a front part 2A in which a rubber diaphragm 21 is housed, and a rear part 2B provided with a gas flow path connected to the thermal power control valve body 3.
The front part 2 </ b> A is open downward and has an outlet 1 of the main valve body 1.
5, a dish-shaped diaphragm chamber 23 opened upward, and a governor valve port 24 provided in a partition between the governor inlet 22 and the diaphragm chamber 23.
Having.

In the rear portion 2B, there are provided an intermediate vertical flow passage 25 extending downward from the diaphragm chamber 23, and a governor outlet 26 communicating with the vertical flow passage 25 and having a sectional area gradually increasing rearward. Have been. The diaphragm chamber 23 is covered with a cap 27 made of sheet metal.
1 has its outer periphery sandwiched between the edge of the diaphragm chamber 23 and the edge of the cap 27.

A valve body holding member 28 is attached to the center of the diaphragm 21, and an urging force adjusting screw mechanism 29 provided on the upper surface of the holding member 28 and the ceiling of the cap 27.
An adjustment spring 2S is interposed between the two. A governor valve body 20 for adjusting the degree of opening of the governor valve port 24 is protruded downward from the valve body holding member 28.
The governor valve body 20 has a large-diameter portion at the tip, and a governor outlet 26.
When the gas pressure applied to the lower surface of the diaphragm 21 increases, it is displaced upward to reduce the valve opening.

The thermal power regulating valve body 3 has a front portion having two vertical cylinder portions 3B and 3A on the left and right sides, and two horizontal tubular outlets 3D on the left and right sides to the upper grill burner G1 and the lower grill burner G2.
Consists of a rear with 3C. At the upper ends of the vertical cylinder portions 3A and 3B, a right heat control valve 30 and a left heat control valve 40 for adjusting the heat of the upper grill burner G1 and the lower grill burner G2 are provided.

A link lever mechanism 45 for increasing or decreasing the valve opening of the thermal power control valves 30 and 40 is attached to the upper end surface of the thermal power control valve body 3. Link lever mechanism 4
5 has a left link lever 4B and a right link lever 4A, and is rotatable by one fulcrum 32 provided on the upper wall surface of a bottomless box-shaped bracket 31 fastened to the upper end surface of the thermal power regulating valve body 3. Supported.

The right link lever 4A includes a working arm 46 extending to the right of the fulcrum 32 and having a fork having a notch formed by bending the tip thereof downward, and a fulcrum 32.
And a driven arm 47 which is a fork portion having a front end bent downward in an L-shape to form a cut groove.

The left link lever 4B is
A working arm 48, which is overlaid on A, extends to the left of the fulcrum 32, and is a fork portion having a tip bent downward to form a cut groove, and is extended forward of the fulcrum 32, And a driven arm 49 having a fork portion having a notch groove at the tip.

As shown in FIG. 3, the left and right vertical cylindrical portions 3B, 3A
Is provided with a common inflow port 3I connected to the rear end of the governor valve body 2 (the front end of the outflow port 26) on the lower front surface, and a laterally extending rearward extending from each of the vertical cylinder portions 3A, 3B on the intermediate rear surface. The cylindrical outlets 3C and 3D are provided side by side. As shown in FIG. 2, the right vertical cylinder 3A and the left vertical cylinder 3B have a valve body 3a of a right thermal power control valve 30 and a valve body 3b of a left thermal power control valve 40 at the upper end thereof, which are rotatable and vertically movable. It is fitted.

Each of the valve bodies 3a and 3b has a columnar shape, and has an upper end exposed at an upper portion of the vertical cylindrical portions 3A and 3B and fitted into the right vertical cylindrical portion 3A and the left vertical cylindrical portion 3B. A right needle pin 33 and a left needle pin 34 for rotating the valve bodies 3a and 3b to increase and decrease the valve opening are attached to the portion in the orthogonal direction.

Right needle pin 33, left needle pin 34
Is extended laterally from the upper end of each of the vertical cylindrical portions 3A and 3B of the thermal power regulating valve body 3 and provided through a right-side inclined slit 35 and a left-side inclined slit 36 provided on the right-hand left wall of the box-shaped bracket 31 and acting as a cam groove. It protrudes. The tips of the needle pins 33 and 34 are engaged with the forks of the working arms 46 and 48.

The right inclined slit 35 and the left inclined slit 36 determine the amount of rotation of the right needle pin 33 or the left needle pin 34 driven by the right link lever 4A or the left link lever 4B in the axial direction of the valve bodies 3a and 3b. The amount of movement is converted into a movement amount to increase or decrease the valve opening of the thermal power control valves 30 and 40.

When the right and left needle pins 33 and 34 are set at the upper ends (front ends), the opening degrees of the thermal power regulating valves 30 and 40 are maximum, and the thermal power of the upper grill burner G1 and the lower grill burner G2 is the strongest. Needle pins 33, 3
When 4 is set at the lower end (front end), the thermal power control valve 3
The valve opening degrees of 0 and 40 range from the minimum to the valve closing, and the heating power of the upper grill burner G1 and the lower grill burner G2 ranges from the weakest to the fire extinguishing.

At the upper part of the governor valve body 2, three fastening seats 18 having screw holes are provided so as to protrude upward, and a heat adjusting lever mechanism 500 is fastened. The heating power adjusting lever mechanism 500 is rotatably mounted on the lever board 6 by a fulcrum 61 on the upper surface of the lever board 6, and controls an upper heating power adjusting lever 6 A for adjusting the heating power of the upper grill burner G 1. It has a lower heating power adjustment lever 6B that is rotatably mounted on the lower surface by a fulcrum 61 and adjusts the heating power of the lower grill burner G2.

The lever board 6 is fastened to the governor valve body 2 by screwing three screws 17 into screw holes of the fastening seat 18. The lever substrate 6 has a hole 62 in the center thereof through which the cap 27 of the governor valve 200 is inserted, and a lever guide 7 formed by bending an extension of the lever substrate 6 upward at the front end. At the front end of the upper heating power adjustment lever 6A and the lower heating power adjustment lever 6B,
Sliding operation knobs 301 and 302 are fixed.

The upper heating power adjustment lever 6A and the lower heating power adjustment lever 6B have pawls 63, 64 formed by bending the tip extensions upward at the rear end of the fulcrum 61, and the driven arms 47 of the link levers 4A, 4B respectively. , 49 are engaged with the notches. In front of the fulcrum 61 of the upper heating power adjustment lever 6A and the lower heating power adjustment lever 6B, a left curved portion 65 (see FIGS. 1 and 6) and a right curved portion for bypassing (or avoiding) the cap 27 of the governor valve 200. 66 (see FIGS. 7 to 11) are formed in the left-right direction.

A cam mechanism 8 for applying an operating force to the lower heating power adjusting lever 6B is provided on the upper surface at the right end of the lever substrate 6.
(See FIGS. 7 to 11). Lever board 6
A cam mechanism 9 (see FIG. 6) for applying an operating force to the upper heating power adjustment lever 6A is provided on the lower surface of the left front end of the cam lever 9A.

The cam mechanism 8 includes a lower lever pin 8 erected upward from the right side of the fulcrum 61 of the lower heating power adjustment lever 6B.
1, a pin insertion hole 67 formed in the lever substrate 6, and a cam plate 82. The cam plate 82 is rotatably attached to a cam plate fulcrum 83 provided at the right end of the lever substrate 6.

The right edge of the cam plate 82 is a cam edge 84, and the cam edge 84 is inserted into the lever board 6 through the insertion hole 67.
Is in sliding contact with the lower lever pin 81 projecting upward. A torsion spring 85 supported by a cam plate fulcrum 83 is attached between the lever substrate 6 and the cam plate 82, and urges the cam plate 82 in the counterclockwise direction.

The cam mechanism 9 has a structure symmetrical to the cam mechanism 8 and projects downward from the left side of the fulcrum 61 of the upper heating power adjustment lever 6A, bypassing the left edge of the lever substrate 6, and projecting downward. An upper lever pin 91 and a cam plate 92 are provided. The cam plate 92 is used by turning over the same components as the cam plate 82 and is rotatably attached to a cam plate fulcrum 93 provided at the left front end of the lever substrate 6.

The left edge of the cam plate 92 is a cam edge 94, and the cam edge 94 is in sliding contact with an upper lever pin 91 projecting below the lever substrate 6. A torsion spring 95 identical to the torsion spring 85 supported on the cam plate fulcrum 93 is attached between the lever substrate 6 and the cam plate 92,
The cam plate 92 is urged in the clockwise direction.

The cam mechanisms 9 and 8 apply a predetermined operating force when the upper heating power adjusting lever 6A or the lower heating power adjusting lever 6B is slid between the high heating power and the low heating power.
Further, when operating from the low heating power position to the fire extinguishing position, a larger operation force is required, and when the upper heating power adjustment lever 6A or the lower heating power adjustment lever 6B is released during the fire extinguishing operation, It has a springback function that automatically returns to low heat. Further, a gradient is reversed but a large discontinuity point 89 is formed between the low heating power position and the fire extinguishing position of the cam edge 84. When the lower lever pin 81 exceeds the large discontinuity point 89, the spring back Automatically put into fire extinguishing position by function.

The lever guide 7 is substantially H as shown in FIG.
It has a U-shaped front shape, and has horizontally long slits 72 and 73 on the upper and lower sides of the horizontal member 71, at which the distal ends of the upper heating power adjustment lever 6A and the lower heating power adjustment lever 6B can slide. Both ends of the slits 72 and 73 serve as stoppers for the distal ends of the upper heating power adjustment lever 6A and the lower heating power adjustment lever 6B. It is a strength member, and there is an advantage that a strong stopper can be formed by extending the thick lever board 6 as a stopper.

At the right end of the horizontal member 71, a substantially isosceles triangular rotating plate 74 having a circular arc at the apex is attached by a fulcrum 75 so as to be rotatable. As shown in FIG. 12A, the rotation range of the rotation plate 74 is limited by protrusions 7A and 7B protruding from the horizontal member 71. For this reason, when one of the upper heating power adjustment lever 6A and the lower heating power adjustment lever 6B is set to the fire extinguishing position, even if one of the operations is performed to put the other into the fire extinguishing position, the operation is changed to the state shown in FIG. As shown, it cannot be put into the fire extinguishing position.

That is, the rotating plate 74 and the projections 7A, 7
B is an upper heating power adjustment lever 6A and a lower heating power adjustment lever 6A.
B constitutes an alternative mechanism 70 for preventing both of them from being simultaneously put into the fire extinguishing position. As a result, the condition that at least one of the upper grill burner G1 and the lower grill burner G2 is burning during use of the grill is obtained.

Next, the operation of the gas appliance will be described. When the ignition / ignition button 101 is pressed during ignition, the switch body 42 is pressed. At this time, the stem 5 is pushed in, the main valve M and the safety valve S are opened, and the fuel gas is supplied from the thermal power increase / decrease mechanism 300 to the upper grill burner G1 or the lower grill burner G2 via the governor valve 200. In synchronization with this, ignition is performed by an ignition device (not shown).

When the lower grill burner G2 during combustion is extinguished during use of the grill storage 400, the gas pressure in the gas flow path 13 temporarily increases. At this time, the diaphragm 21 of the governor valve 200 is displaced upward to reduce the valve opening. When the lower grill burner G2 is ignited during fire extinguishing, the gas pressure in the gas flow path is temporarily reduced. At this time, the diaphragm 21
Moves down to increase the valve opening. As a result, the pressure fluctuation of the fuel gas is instantaneously reduced, and stable combustion is always obtained in the lower grill burner G2.

FIG. 6 shows a connection state of the upper heating power adjustment lever 6A and the left link lever 4B set at the position of the low heating power. 7 to 11 show the connection state of the lower heating power adjustment lever 6B and the right link lever 4A set at the springback position from the high heating power to the low heating power, the weak position, and the fire extinguishing position, respectively.

In this embodiment, the governor valve 200 is located on the front side of the thermal power control valve body 3 and is not easily affected by the heat of the burner burner B2. Therefore, deterioration of the rubber diaphragm 21 due to heat can be prevented, and durability can be improved.

The gas flow paths in the main valve body 1, the governor valve body 2, and the thermal power control valve body 3 are substantially V-shaped in substantially the same vertical plane, and the pressure loss due to the deflection of the fuel gas flow is reduced. Has a few simple shapes.

[Brief description of the drawings]

FIG. 1 is a perspective view of a valve mechanism of a grill burner of a table stove;

FIG. 2 is a perspective view of a valve mechanism with a heat adjusting lever mechanism and a link lever mechanism removed.

FIG. 3 is a sectional view of a valve mechanism of a grill burner of the table stove;

FIG. 4 is a perspective view of a table stove;

FIG. 5 is a schematic configuration diagram of a grill burner and a valve mechanism.

FIG. 6 is a plan view of a valve mechanism of the grill burner.

FIG. 7 is a plan view of a valve mechanism of the grill burner.

FIG. 8 is a plan view of a valve mechanism of the grill burner.

FIG. 9 is a plan view of a valve mechanism of the grill burner.

FIG. 10 is a plan view of a valve mechanism of the grill burner.

FIG. 11 is a plan view of a valve mechanism of the grill burner.

FIG. 12 is a front view of a guide panel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main valve body 2 Governor valve body 3 Thermal power control valve body 13 Gas flow path 14 Inlet 15 Outflow port 20 Governor valve body 22 Governor inlet port 26 Governor outlet 30 Left thermal power control valve 40 Right thermal power control valve 100 Point / fire extinguishing mechanism 200 governor valve 300 thermal power increasing / decreasing mechanism 500 thermal power adjusting lever mechanism A valve mechanism for grill burner B1, B2 burner burner G1 upper grill burner G2 lower grill burner M main valve S safety valve

Claims (4)

(57) [Claims] A main valve body provided with a burner, a gas flow path for supplying combustion gas to the burner, and an opening / closing valve for the gas flow path; an outlet of the main valve body; A thermal power control valve body interposed between the burner suction port and a thermal power control valve for adjusting the thermal power of the burner; an outlet of the main valve body and the thermal power control valve body In a gas appliance having a valve mechanism having a governor valve provided in connection with an inflow port of a main valve body , the gas valve is disposed above a front side of a main valve body disposed in the front-rear direction.
A burner valve is arranged, and the thermal power adjustment valve body is
As well as location, before between the burner and the governor valve
A gas appliance , wherein the thermal power control valve body is disposed at substantially the same height as the governor valve . 2. The gas appliance according to claim 1, further comprising: a burner, a gas flow path for supplying combustion gas to the burner, and a safety valve or a main valve for opening and closing the gas flow path. A main valve body, and between the outlet of the main valve body and the suction port of the burner, and for adjusting the heating power of the burner from strong heating power to low heating power by turning the valve body. A thermal power control valve body provided with a thermal power control valve, a governor valve provided by connecting an outflow port of the main valve body and an inflow port of the thermal power control valve body, and opening and closing the safety valve or the main valve. A gas appliance comprising: a point / fire extinguishing mechanism; and a heating power adjustment lever mechanism for rotating the valve body to increase or decrease the valve opening of the heating power adjustment valve. 3. The gas appliance according to claim 2, wherein the burner is a grill burner mounted on a grill of a table stove. 4. The main valve body according to claim 3, wherein the main valve body is disposed in a front-rear direction within a housing of the table stove, and an inlet for fuel gas is provided at a rear portion and an outlet is formed at an upper surface of a front portion. The governor valve is configured such that a governor valve body is fastened to a front portion of the main valve body, a governor inflow port opened downward is connected to the outflow port, and a governor outflow port is formed rearward, A gas appliance, wherein the thermal power regulating valve body is disposed behind the governor valve body and above a rear part of the main valve body, and has an inlet at a front part connected to the governor outlet.