KR100194962B1 - Ignition indicator of gas appliance - Google Patents

Abstract

[Problem] It is possible to display by common display means that the operation button is operated to the ignition position and the gas burner is ignited by the above operation, and when the flame of the gas burner disappears, it can be displayed by the display means. To be.

[Solution] An apparatus comprising an ignition device for igniting a gas burner by operating an operation button to an ignition position, a flame detection device for detecting the presence or absence of sparks in the gas burner, and a display means, the ignition position of the operation button In response to the operation of the furnace, the display means is brought into the display state, and after the operation, the display means is brought into the display state in response to the detection output of the flame, and in response to the detection output from the flame. Forming display control means for making the display means in a non-display state.

Description

Ignition indicator of gas appliance

1 is an external view of a tabletop furnace.

2 is a sectional view of a non-operational state of the operation button 2;

3 is a sectional view of an operation state of the operation button 2;

4 is a cross-sectional view of an embodiment of the present invention in which the operation button 2 is attached to the front plate 11.

5 is a rear view of the operation button 2 attached state showing a state in which the electric cord 32 is pulled out as it is.

6 is an exploded perspective view of the substrate 30, the substrate button 400 and the valve pressing bracket (5).

7 is a plan view of the substrate button 400.

8 is a front view of the substrate button 400.

9 is an explanatory diagram of the substrate 30.

10 is an explanatory diagram of a gas circuit and an electric circuit.

11 is a rear view of a state in which the electric cord 32 is drawn out from the support point shaft 26.

12 is a partial state diagram of the cord fixing piece (28).

13 is an electric circuit diagram of the relationship between the light emission control circuit 64 and the forced adsorption timer 61 of the embodiment of the present invention.

14 is an electric circuit diagram including another example of the solenoid valve 551 driving circuit.

* Explanation of symbols for main parts of the drawings

31: light emitting unit B: light emitting display

2: operation button 21: window

64: light emission control circuit 61: forced adsorption timer

[TECHNICAL FIELD OF THE INVENTION]

The present invention relates to an ignition display device for a gas appliance in which an ignition device is operated by operation of an operation button to ignite a gas burner.

[Prior art]

An ignition display device in which the ignition device is operated when the operation button is operated to the ignition position and the gas burner is ignited, which indicates that the operation button has been operated by the display means. It is published in 130124.

In the display device, as shown in FIG. 1, for each of the furnaces la and la disposed on the left and right sides of the top plate of the table furnace, the furnace operation devices 13 and 14 and the central grill are respectively grilled. The operation device 15 is provided on the front plate 11 of the base 10, and is attached to the front plate 11 to expose the operation button operation unit of the operation unit, and the operation button is attached to the base. It opposes the spindle of the valve mechanism opening / closing mechanism built in. And the operation button is a configuration in which the lower portion is pivotally supported back and forth around the support point of the upper portion.

As a result, the corresponding gas valve is opened by the pressing operation of the operation unit so that the gas circuit to the gas burner is communicated, and an ignition device (not shown) is operated to ignite the gas burner. Then, by pressing the operation portion again, the operation portion returns to the initial position, the gas valve is closed and the gas burner is extinguished.

In particular, the display device of the prior art, as shown in Figs. 2 and 3, has a window 21 having a transparent cover part on the operation part of each operation button 2 of the operation devices 13, 14 and 15. Is formed and the roller type display body 22 is provided in the back surface of this window 22. As shown in FIG. The display member 22 is pressed to a position where the operation portion opens the gas valve by the action of a mechanism portion that is mounted between the support frame 23 which supports the rotation of the operation button 2 freely. When the part which can be seen by the window 21 of the display body 22 is changed to the coloring part A (for example, red color), it is said that the push button 2 is in operation state. Judging from the front.

However, the display device of the prior art only displays whether or not the operation button is operated to the ignition position, and it cannot be determined by the display device whether or not the gas burner is ignited. Therefore, in order to solve the above problem, it is conceivable to use a display means in which the display device is brought into a display state in response to an output when the flame detection device employed in this kind of gas mechanism detects the flame.

In the case of the gas appliance employing the display means, if the ignition device is operated by the operation of the operation button to ignite the gas burner, the display means is in a display state when the flame detection device detects the flame, and conversely, the flame detection device When the flame is not detected, the display means does not become a display state. Therefore, it is possible to determine whether or not the display means is ignited by the gas burner.

[Problems that the invention tries to solve]

However, in such an ignition apparatus, there is a time delay until the display means is brought into the display state after the operation button is operated to the ignition position. This is because the ignition device is operated to ignite the gas burner, and a certain time is required until the flame detection device detects the flame formed on the gas burner.

Therefore, there is a problem that the ignition display device does not become a display state even though the gas burner is ignited after the operation button is operated to the ignition position.

The invention of claim 1 solves such a problem, and it is possible to display that the operation button is operated at the ignition position and that the ignition on the gas burner by the operation is indicated by common display means, and the flame of the gas burner When this is lost, it is a problem to display this by the display means.

In addition to the above object, the invention of claim 4 is to make it possible to automatically shut off the gas circuit when the gas burner is not ignited and when the flame of the gas burner is lost.

[Means for solving the problem]

Claims to be solved to solve the above problems claim 1 of the present invention is a "ignition device for igniting the gas burner by the operation of the operation button to the ignition position, a flame detection device for detecting the presence or absence of the flame of the gas burner; In a mechanism provided with display means, the display means is brought into a display state in response to an operation of the operation button in the ignition position, and the display is made in response to a detection output that there is a flame of the flame detection device after the operation. And display control means for making the display means in the non-display state in response to the detection output that there is no flame.

In the display means, when the operation button is operated in the ignition position, the gas burner is ignited by the ignition device, and at the same time, the display means is brought into a display state by the action of the display control means. As a result, it can be determined that the operation button is operated.

When the flame formed on the gas burner is detected by the flame detection device and the flame detection device generates a detection output that there is a flame, the display means is maintained in the display state by the action of the display control means. When the gas burner is not ignited even when the ignition device is operated, or when the flame of the gas burner disappears after ignition, the flame detection device generates a detection output that there is no spark and is caused by the operation of the display control means. The display means is in a non-display state.

As the flame detection apparatus, as described in claim 2, "The thermocouple circuit is provided with the thermoelectric circuit which generate | occur | produces a thermoelectric power according to the heating temperature of the infected part heated by the flame formed in the said gas burner, and the said thermoelectric power is a set value. In this case, it is possible to adopt a configuration that generates a detection output that there is a flame and, on the contrary, generates a detection output that there is no flame when the thermoelectric power does not reach the set value.

The display means may be " constitution formed on a part of the operation button " as described in claim 3. In this case, it can be determined more clearly by the display means that the operation button is operated to the ignition position.

In the invention according to claim 2 or 3, as in the invention of claim 4, "the display control means displays the display means only for a preset time in response to the operation of the operation button to the ignition position. And a timer, wherein the set time is longer than the time required until the flame detection device outputs a detection output that there is a flame when the gas burner is ignited after the operation button is operated to the ignition position. And a mangetization coil of the solenoid valve inserted into the gas circuit to the gas burner is inserted into the thermocouple circuit, and the valve body of the solenoid valve is opened by forcing the operation button to the ignition position. In addition, the automatic valve is closed in the excitation coil non-conducting state, the valve opening and maintenance power separate from the thermoelectric power of the thermocouple circuit is the other Means for supplying the excitation coils only during the set time of the hammer '' is a combination of a thermocouple flame detection device and a safety device. When the flame detection device does not detect a flame, the gas The solenoid valve is forced to open the valve until the gas circuit to the burner is automatically shut off and the flame detection device generates a spark output after being ignited by the operation of the operation button to the ignition position. Therefore, the display means is maintained in the display state by the output of the timer until the flame detection device generates a detection output that there is a flame.

[Effects of the Invention]

According to the invention of claim 1, it is possible to display by common display means that the operation button is operated to the ignition position and the gas burner is ignited by the operation, and when the flame of the gas burner disappears, It can be displayed by the display means. In addition, it is possible to solve the problem that the display means does not become a display state even when the gas burner is in the ignition state at the operation button in the ignition position.

According to the invention of claim 3, the display means is easy to see.

According to the invention of claim 4, when the flame of the gas burner is lost, the gas circuit to the gas burner is automatically shut off, so it is safe. Moreover, it is not necessary to press the said operation button continuously until the flame detection apparatus produces the detection output that a flame exists, and operability is improved.

Embodiment of the Invention

In the embodiment shown below, the above-mentioned ignition display device is employed in the operation apparatus of the table furnace as shown in FIG. 1 as in the prior art. In this example, only one operation apparatus will be described in detail. The same configuration is adopted for other operating devices.

As shown in FIG. 4 and FIG. 5, the said operation apparatus is provided with the operation button 2 supported by the support frame 23 attached to the front plate 11. As shown in FIG. As shown in Figs. 4 and 5, the operation button 2 has the support shafts 26 and 26 on the upper and left sides of which rotate in the shaft holes 23b of the left and right side walls 23a of the support frame 23. Freely penetrated Therefore, the operation button 2 is freely formed to rotate back and forth.

The operation button 2 is configured such that its lower half protrudes forward, and this protrusion becomes the operation unit 20. The window 21 which consists of a transparent board is formed in the predetermined position in front of this operation part 20. As shown in FIG. Moreover, attachment tongues 25 and 25 for attaching the valve pressing tool 5 which are in contact with the spindle 57 which is the opening / closing mechanism 56 of the valve are formed in the upper and lower sides of the protruding portion. The light emitting unit 31 serving as the display means described above is disposed on the protruding portion of the rear surface of the window 21, and the front surface B of the light emitting unit 31 is in close proximity to the window 21d.

As shown in Figs. 6 and 9, the light emitting unit 31 is attached so as to protrude from the entire surface of the rectangular plate-shaped substrate 30 provided with the electric cord 32. The substrate holder 400 is attached to the substrate holder 400 shown in FIGS.

The substrate holder 400 is a rectangular frame that is left and right longer than the substrate 30, and a pair of engaging pieces 41 and 41 protrude forward from each of the upper and lower sides of the front surface. Each said engaging piece 41 is provided with the engaging protrusion 411 protruded inward. In the substrate 30, four corner portions are cut into a rectangular shape, and the substrate 30 is inserted into the cut portions 33 and 33 so that the locking pieces 41 and 41 coincide with each other. Then, positioning is performed by the cutouts 33 and the engaging pieces 41 in the left, right, up and down directions, and the engagement with the peripheral edge of the substrate 30 in a direction perpendicular to the attachment plane of the substrate holder 400. By the engagement of the projection 411 is fixed to the fall prevention state.

In the attached state, the electric cord 32 extends in the longitudinal direction of the substrate holder 400. A connection port 34 is attached to the tip of the electric cord 32.

In the substrate 30 and the substrate holder 400, a football having the attachment shafts 42 and 42 protruding from the left and right sidewalls of the substrate holder 400 is formed on the left and right sidewalls 2a and 2a of the operation button 2. It is inserted into the yoke 2a ₁ , 2a ₁ and attached to the operation button 2 as shown in FIGS. 4 and 5.

The electric cord 32 is connected to the board 30, but the electric cord 32 is inserted into the back from the cord hole 45 formed at one side of the board holder 400, and the operation button as shown in FIG. It is withdrawn in the lateral direction of (2). In addition, in order to allow the cord with the connector to pass therethrough, the cord hole 45 needs to be a large open hole through which the connector 34 can pass. The electrical cord is connected to a control circuit.

In addition, the pair of extension pieces 43 and 43 protrude upward from the upper side of the substrate holder 400, and the extension is attached to the operation button 2 by the attachment shafts 42 and 42. The tip portions of the piece 43 abut against each other at the rear with respect to the attachment tongue 25.

In addition, a back recess 44 is formed on the back of the substrate holder 400. The width of the back recessed portion 44 is set larger than the width of the valve presser 5. The valve pressing bracket 5 has side wall pieces 51 and 51 protruding forward on left and right sides thereof, and an upper side plate 52 protrudes forward from its upper side, and a lower side plate 53 protrudes forward from its lower side. have. In addition, the front edge of the valve presser 5 is in contact with the rear end of the attachment tongues 25 and 25 in such a manner that the front edge portion of the side wall pieces 51 and 51 abuts against the bottom portion of the rear concave portion 44. It is. In this state, the upper side plate 52 is attached to the upper surface of the upper attachment tongue 25, and the lower side plate 53 is attached to the lower surface of the lower attachment tongue 25.

Engagement holes 54 are formed in the upper side plate 52 and the lower side plate 53, and engagement protrusions 27 and 27 formed at predetermined positions of the attachment tongues 25 and 25 fit here. The valve pusher 5 is fixed in the prevented state from being inserted.

In addition, since the substrate holder 400 is brought into contact with the valve pressing tool 5 fixed to the operation button 2 in the rear (bottom portion of the back recess 44) throughout the vertical direction, the operation button ( In 2), the attachment state of the substrate holder 400 is fixed.

The electric cord 32 connected to the substrate 30 is taken out through the cord hole 45 of the substrate holder 400 and drawn out laterally as shown in FIG.

5 shows an example in which the electric cord 32 is drawn out in the lateral direction of the operation button 2, but the electric cord 32 is drawn out above the line connecting the support shafts 26 and 26. It is also possible to draw out laterally, and in both cases, the resistance of the electric cord is less likely to occur than drawing out backward. Preferably, as shown in FIG. 11, the electric cord 32 may be taken out from the support point shaft 26 portion to the outside. Or you may draw back from the line which connects the support point shafts 26 and 26 or somewhere near it. In these cases, resistance of the electric cord 32 hardly occurs when the operation button 2 is rotated.

In the case of FIG. 11, the cord fixing piece 28 having a "C-shaped" shape as a whole as shown in FIG. 12 is provided at the electrical cord lead-out part from the operation button 2, and the side wall 2a of the operation button 2 is shown. Since the connection is formed at the upper end, the position of the cord lead-out is fixed and the operability is improved. In the case of the four feet, the cord fixing piece can be adopted even in the case of other embodiments. The electric cord 32 can be drawn out to the outside without passing through the cord hole 45.

Further, the substrate holder 400 in the above example allows the attachment shafts 42 and 42 to be inserted into the shaft holes of the sidewalls 2a and 2a of the operation button 2, but the operation buttons provided with the shaft holes are described above. It is the same structure as the operation button of the prior art, and it is a structure which can be dedicated even if it is an operation apparatus of the structure which rotates the display body 22 in conjunction with the press-in operation of the operation button 2, and the said indication well-known in the said shaft hole. The support point shaft of the sieve 22 is fitted to be fixed, and a known interlocking mechanism is inserted between the support frame 23 and the support frame 23 to perform the same function as the above-described prior art. In this manner, the shaft hole as the bearing hole portion of the support point shaft of the display body 22 also functions as the bearing shaft hole of the attachment shafts 42 and 42 of the substrate holder 400.

The substrate holder 400 may be a holder for directly attaching a light emitting unit.

In the above example, as shown in FIG. 10, the solenoid valve 55 of the thermocouple safety valve is forcibly opened by the operating device of the above configuration, and the ignition device 7 is operated, and the solenoid valve ( In order to keep 55 in the forced open state for a predetermined time, the switch 63 for starting the forced adsorption timer 61 is "ON".

Therefore, the actuator of the switch 63 is interlocked with the valve presser 5, and the opening / closing mechanism 56 of the solenoid valve 55 is connected to the valve presser 5 by the spindle 57. It is touching. In addition, the switch 63 may be controlled by the spindle 57.

When the spindle 57 is press-fitted, the opening / closing mechanism part 56 is a mechanism part for sucking the iron piece connected to the valve body of the solenoid valve 55 to the electromagnet inside to open the valve body.

At the same time as the spindle 57 is press-fitted, the switch 63 is turned "on", the ignition device 7 is brought into an operating state, and is discharged from the spark plug 71 to the flame hole portion of the gas burner 16 and ignited. At the same time, the forced adsorption timer 61 is operated, and the electromagnet is maintained in the conductive state by the power of the battery 62 only during the set time T of the forced adsorption timer 61. As a result, the solenoid valve 55 is kept open.

After that, when the thermocouple 6 is heated to reach a predetermined temperature, the thermocouple circuit 60 generates a current equal to a predetermined thermoelectric power, and the electromagnet maintains the iron piece in an adsorption state by the current by the thermoelectric power. do. Therefore, the setting time T of the forced adsorption timer 61 is set longer than the time required until the predetermined thermoelectric power is generated.

In the above example, as shown in FIG. 13, a light emission control circuit 64 for controlling the light emission of the light emitting unit 31 by the signal in the thermocouple arc 60 and the signal in the forced adsorption timer 61 is claimed. Corresponding to the display control means according to claim 1 and claim 4). Therefore, even when the iron piece is in the adsorption state by the thermoelectric power of the thermocouple after operating the operation button 2, the light emitting display portion B of the light emitting unit 31 is controlled by the output of the forced adsorption timer 61. The light emission display state is maintained by the output check R ₂₁ of the relay R ₂ being conducted. After that, the light emitting unit 31 conducts by the output of the detection circuit 65 which detects that the thermoelectric power of the thermocouple element 6 has reached a constant level, and the light emitting state is continued. Of course, when the thermoelectric power of the thermocouple 6 is lower than or equal to the set value due to the disappearance of the spark in the flame portion of the gas burner 16, the output of the detection circuit 65 becomes LOW, so that the switching transistor 66 ) Is turned off so that the light emitting unit 31 is in a non-display state.

An LED lamp may be employed for the light emitting display portion B. In the 13 ° circuit, the exciting coil 551 of the force absorption timer 61, solenoid valve 55, by the output contact (R ₁₁₎ of the relay (R ₁₎ which is conductive by the output of being forcibly rendered conductive by Forced adsorption is performed to maintain the valve open state during the operation of the forced adsorption timer (61).

On the other hand, the thermocouple is kept open by the thermocouple 6 even if the forced adsorption timer 61 is not operated by generating a predetermined start therebetween as described above.

In Fig. 14, the holding unit 62 is driven by a signal from the thermocouple circuit 60, such as the holding lamp of the solenoid valve 55 after the forced adsorption timer 61 is not operated and the display lamp 31. ) To be achieved.

In the above example, the light emitting unit 31 is incorporated in the operation button 2, but it may be provided at a position somewhere on the front surface of the mechanism. As the flame detection device, a thermocouple flame detection device in which a thermocouple element 6 is combined with a detection circuit 65 for detecting that the thermocouple circuit thermoelectric power has reached a constant level is used. It is possible to use another flame detection device that outputs a detection output depending on the presence or absence of the flame of the gas burner.

As the display control means, in addition to using the forced adsorption timer 61, the operation button 2 is operated to the ignition position so that the display means is displayed, and then the flame detection circuit at the end of the operation of the ignition device 7 The display may be controlled in response to the output.

Claims (4)

A gas mechanism comprising an ignition device for igniting a gas burner by operating an operation button to an ignition position, a flame detection device for detecting the presence or absence of a flame of the gas burner, and a display means, the operation of the operation button in an ignition position. In response to the display means, the display means is brought into a display state, and after the operation, the display means is brought into a display state in response to a detection output that there is a flame, and in response to a detection output that there is no flame. An ignition display device for a gas appliance, characterized by forming display control means for putting the means in a non-display state. The flame detection device of claim 1, wherein the flame detection device includes a thermocouple circuit that generates a thermoelectric power in accordance with a heating temperature of a heat sensing portion heated by a flame formed in the gas burner, and when the thermoelectric power reaches a set value, the flame And a detection output that generates no flame when the thermoelectric power does not reach the set value. 3. An ignition display apparatus for a gas appliance according to claim 1 or 2, wherein a display means is formed in part of said operation button. The display control means according to claim 2 or 3, wherein the display control means includes a timer for making the display means display only for a set time in response to the operation of the operation button to the ignition position. When the gas burner is ignited after the button is operated to the ignition position, the flame detection device is set longer than the time required for outputting the detection output of the spark, and the thermocouple circuit is inserted into the gas circuit to the gas burner. The excitation coil of one solenoid valve is inserted, and the valve body of the solenoid valve is forcibly opened by the operation of the operation button to the ignition position, and the automatic valve is closed in the non-conduction state of the excitation coil. Means for forming a means for supplying the valve opening maintenance power different from the thermal power of the power supply to the excitation coil only for the set time of the timer. An ignition display device for a gas appliance.