TWI690677B - Improvement of mechanical timing device for gas furnace - Google Patents

Abstract

This creation is an improvement of a mechanical timing device for a gas furnace. The timing device is provided with a set of timing cam groups and a group of normally open cam groups on a rotating shaft of a timer, and a swing seat is used to hold the timing cam groups and normally open cam groups. Swing up and down to control the opening and closing of the normally open valve, so that the mechanical timing device is fixed on the normally open fire flange of the normally open fire cam group or at the same time during the timing setting of the normally open fire cooking Clamped on the arc wall of the normally fired flange of the normally fired cam group and the timing fired periphery of the timing cam group or on the timing fired periphery of the timing cam group, so that the normally open valve is kept at Open the position and maintain the normal fire state, the cooking will not be interrupted, and the re-ignition can be avoided.

Description

Improvement of mechanical timing device for gas furnace

This creation is about a mechanical timing device for a gas stove. When it is set to regular cooking during the normally open cooking process, the cooking will not be turned off and the cooking will be interrupted, and re-ignition can be avoided.

According to the current conventional gas furnace, the thermoelectric force generated by the heat of the furnace fire is induced by the thermocouple of the solenoid valve to control the opening and closing of the solenoid valve, so that the fire opens the solenoid valve while the fire is burning. When not burning, the solenoid valve is closed to prevent gas leakage, causing dangerous situations such as poisoning and fire, as a safety mechanism of the gas furnace.

When the gas stove is used for frying, frying, and deep-frying cooking, the user operates under the condition of normally open fire. For the time-consuming stew, the braised pork, the soup simmering, and boiling the water It takes a long time to heat up slowly and even stew traditional Chinese medicines. At this time, users usually use this heating time to temporarily leave to do other housework or slide entertainment or watch TV and other entertainment matters. However, In this period, if the user forgets that the gas furnace is still firing, although it has thermocouple induction, it can avoid the disadvantages of gas leakage caused by the furnace fire being blown out or blown out, but it is caused by the user forgetting the time Dangerous events such as poisoning or fire caused by stewing food for a long time or burning the pot body are still heard. To prevent this accident, more cautious users are usually afraid of forgetting the time of heating or stewing. Don’t dare to stay away for a moment, and pay special attention to the heating or simmering time, so that the gas can be turned off immediately after the simmering and cooking is completed, so as to avoid the above-mentioned accidental dangerous events, but it must cause the user to pay attention at all times. The mental burden of the fire source, therefore, relying on thermocouple induction alone is not a panacea. In fact, a timing safety device that can control the heating time of the furnace fire is needed to improve the safety and convenience of its use, making the estimated heating and simmering time It can be just right, and it can automatically turn off the gas when the heating and stewing time expires, which is a safe design.

In response to the above-mentioned problems, the industry has already installed a device for setting the gas furnace to solve this problem. According to the creator's knowledge, the gas furnace timing device is roughly divided into two types: electronic and mechanical; for the gas furnace electronic timing device Although it can automatically turn off the gas immediately when the set time is reached, however, because the electronic timer of the gas furnace needs to use electronic components and batteries as the power source to control the gas shut-off time of the gas furnace, but this kind of gas furnace In a high-temperature, oily, and watery environment, the electronic components are very easy to fail, which makes the gas timer electronic timing device not very durable, high cost, and not practical, so it has not been widely used so far.

As far as the gas timer mechanical timing device is concerned, when the normally open cooking state is to be switched to timed cooking, the mechanical timing member will often pass the flameout point (that is, turn off the gas and flameout), interrupting the stew cooking, so in After the timing setting is completed, it must be re-ignited, sometimes even several times to complete the ignition purpose, and after the ignition, the size of the flame must be adjusted again to suit the stew cooking, so it is inconvenient to use and not practical.

In view of the fact that the existing gas furnace mechanical timing device is lacking in use and its structural design is not ideal, the creator started to develop its solution, hoping to develop a more convenient and practical machine The structure of the type timing device to promote the development of this industry, after a long time of conception, active research and development, and after many tests, then developed this creation "gas stove mechanical timing device improvement", through appropriate improvements, design , In order to improve the practical effect, it can better meet the needs of actual use.

The main purpose of this creation is to provide an improvement of the mechanical timing device of the gas stove, which will not be turned off and interrupted during the process of setting to regular cooking in the normally open cooking, so there is no need to re-ignite and adjust the size of the flame.

Another purpose of this creation is to provide an improvement of the mechanical timing device of the gas furnace. Its normally-open valve and grille are made integrally, which can save parts and do not need to be combined to save man-hour cost.

The technical means adopted by this creation to achieve the above purpose is an improvement of a mechanical timing device for a gas furnace. The timing device is provided with a group of timing cam groups and a group of normally open fire cam groups on the timer rotating shaft of the timer. The swing seat is clamped on the timing cam group and the normally open fire cam group to swing up and down to control the opening and closing of a normally open valve or a gas passage control device, so that the mechanical timing device is in the process of timing setting when cooking at normally open fire , The oscillating base does not move, it is clamped on the normally open fire cam group or on the normally open fire cam group and the timing cam group or on the timing cam group, so that the normally open fire is set for timing when cooking During the process, the normally open valve or the gas path control device is kept in the open position and maintained in the normally open fire state without stopping the flame to interrupt cooking, and re-ignition can be avoided.

The timing cam set includes a fixed-time locking member and a fixed-time cam. The fixed timing member is fixed on the timer rotating shaft of the timer and can rotate with the timer rotating shaft. The timing cam is sleeved on the timer On the rotating shaft, and the timing cam is used to catch the timing cam to rotate on the timer rotating shaft; the normally open fire cam group includes a normally open fire catcher and a normally open fire cam, the normally open fire catcher is fixedly mounted on The timer rotating shaft of the timer can rotate along with the timer rotating shaft. The normally-fire cam is sleeved on the timer shaft, and the normally-fire cam is locked on the normally-fire cam to rotate on the timer shaft.

The mechanical timing device of the gas furnace uses the timing catcher to catch the timing cam and the normally open fire catcher to catch the normally open fire cam before and after the time difference, so that the swing seat is caught on the normally open fire cam, Or be stuck on the normally open fire cam and the timing cam at the same time, or be held on the timing cam to keep the normally open valve or gas passage control device in the open position to maintain the normally open fire state, so that when the normally open fire cooking During the timing setting, the normal fire state is maintained and the flame is not turned off.

The timing cam of the timing cam set is provided with a certain time locking groove, the timing cam is provided with a certain time locking tip and a certain time fire periphery, and is provided with a certain time flameout gap, the timing locking part can be The timing cam is used to catch the timing cam to rotate on the timer rotating shaft; the normally-fire cam member of the normally-fire cam group is provided with a normally-fire catch groove, and the normally-fire cam is provided with a normally-fire catch tip And a normally-fire flange and a second flame-out gap, the normally-fire clip can use the normally-fire clip to groove the normally-fire cam to rotate on the timer shaft, and the normally-fire clip can be normally fire The locking groove is larger than the timing locking groove of the timing locking piece. The device uses the timing locking groove of the timing locking piece to lock the timing locking tip of the timing cam and the normally open fire of the normally open fire locking piece The time difference between the front and back of the normally open fire clamp of the locking groove to engage the normally open cam of the normally open fire cam, so that the swing card of the swing seat is held on the normally open flange, or at the same time on the normally open flange and the periphery of the regular fire, Or stuck on the periphery of the timing fire, keep the normally open valve or gas passage control device in the open position to maintain the normally fired state, and maintain the normally fired state during the timing setting process without extinguishing the flame. The radius of the firing flange is larger or the same as the periphery of the timing fire of the timing cam.

The timing locking member is provided with a certain time locking tip, the timing cam is provided with a certain time locking slot, a certain time fire periphery, and a certain time flameout gap, and the timing locking member can borrow the timing card The movable pin is locked by the timing card, and the timing cam rotates on the timer rotating shaft; the normally open fire card is provided with a normally open fire card, the normally open fire cam is provided with a normally open fire card, and a normally open fire The flange is also provided with a second flameout notch, and the normally open fire catcher can use the normally open fire clip to catch the normally open fire clip through the slot, so that the normally open fire cam rotates on the timer rotating shaft. The normally-open fire catching slot is larger than the timing cam's timing catching slot. This device uses the timing catching tip of the timing catcher to catch the timing cam's timing catching slot and the normally-opening fire catcher's normal fire. The time difference between the front and back of the normal fire cam of the normal firing cam and the slot of the normal firing cam is locked so that the swing card of the swing seat is clamped on the normal fire flange, or on the circumferential edge of the normal fire and the regular fire. Or stuck on the periphery of the timing fire, keep the normally open valve or gas passage control device in the open position to maintain the normally fired state, and maintain the normally fired state during the timing setting process without extinguishing the flame. The radius of the firing flange is larger or the same as the periphery of the timing fire of the timing cam.

The normally open valve is provided with a gas inlet and a gas outlet, and a channel is provided inside to connect the gas inlet and the gas outlet. The normally open valve is provided with a valve stem and a conical valve plug provided at the lower end of the valve stem for opening and closing Gas outlet.

The normally open valve or the gas passage control device is made integrally with the grilling system.

The mechanical timing device of the gas furnace mentioned above, when the gas furnace is used for the time set by the timer, the flame is turned off, the timer shaft is rotated counterclockwise by the delay of the timer, which drives the timing catch and the normally open fire catch Rotate counterclockwise, the timing cam and the normally open fire cam rotate counterclockwise, so that the swing seat does not press the stem of the normally open valve or gas passage control device, so that the normally open valve or gas passage control device is opened, that is It can automatically turn the timing catcher, timing cam, normally open fire catcher and normally open fire cam back to the original unfired initial state.

The mechanical timing device of the gas stove mentioned above, when the gas stove is used to stop the flame after the time set time is reached, the timer knob is manually turned to turn counterclockwise, so that the timer shaft rotates counterclockwise to drive the timing lock The parts and the normally open fire-locking part rotate counterclockwise, and the timing cam and the normally open fire cam rotate counterclockwise, so that the swing seat does not press the stem of the normally open valve or the gas passage control device, so that the normally open valve or When the gas path control device is turned on, it can automatically turn the timing catch, timing cam, normally open fire catch and normally open fire cam back to the original unfired initial state.

The front end of the swing seat is provided with two arms pivotally mounted on the pivot of the shaft frame, so that the swing seat can pivot up and down the rear end of the swing seat with the pivot as the center, and a swinging sloping plate inclined downward is provided in the middle section of the swing seat , The front edge of the front end can be clamped on the timing cam or/and the normal fire cam, so that the rear end of the swing seat can swing up and down.

Another technical means adopted by the author to achieve the above purpose is an improvement of a mechanical timer device for a gas furnace. The timer device includes a timer. The timer is a mechanical timer installed on a gas furnace platform. One end of its rotating shaft protrudes outside the panel of the gas stove, and is fixedly connected to the timer knob to rotate to control the timing; a certain time cam group, the timing cam group includes a certain time locking member and a certain time cam; the timing locking member is fixed at The timer rotation shaft of the timer can rotate with the timer rotation shaft; the timing cam sleeve is fixed on the timer rotation shaft; the timing catcher can catch the timing cam to rotate on the timer rotation shaft; a normally-fire cam group, The normally open fire cam group includes a normally open fire catching part and a normally open fire cam; the normally open fire catching part is fixed on the timer rotating shaft of the timer and can rotate with the timer rotating shaft; the normally open fire cam is set at the timing On the rotating shaft of the device, the normally open fire catcher can drive the normally open cam to rotate on the timer rotating shaft; a swing seat is provided on the stem of a normally open valve or a gas passage control device, and the front end of the swing seat is held On the timing cam or/and the normally fired follower cam, the swing seat is swung up and down to depress the valve stem to lower or release the valve stem to rise; a normally open valve or gas passage control device which controls the normally open valve or gas passage The device is provided with a valve stem to open or close the gas. The upper end of the valve stem is placed on the swing seat. When the swing seat is pressed down, the valve stem is closed. When the swing seat is up, the normally open valve or gas passage is controlled. The device maintains the normally open state; and the timing cam and the normally open fire catcher are used to lock the normally open fire cam, so that the mechanical timing device swings during the regular cooking setting in the normally open fire. The seat is clamped on the normally open fire cam, or on the normally open fire cam and the timing cam at the same time, or on the timing cam, will not fall into the flameout gap, so that the normally open valve or gas passage control device is kept open Position to maintain the normally open fire state, so that the normally open fire state is maintained during the timed cooking setting process and will not be turned off.

The timing cam of the timing cam set is provided with a certain time locking groove, the timing cam is provided with a certain time locking tip and a certain time fire periphery, and is provided with a certain time flameout gap, the timing locking part can be The timing cam is used to catch the timing cam to rotate on the timer rotating shaft; the normally-fire cam member of the normally-fire cam group is provided with a normally-fire catch groove, and the normally-fire cam is provided with a normally-fire catch tip And a normally-fire flange and a second flame-out gap, the normally-fire clip can use the normally-fire clip to groove the normally-fire cam to rotate on the timer shaft, and the normally-fire clip can be normally fire The locking groove is larger than the timing locking groove of the timing locking piece. The device uses the timing locking groove of the timing locking piece to lock the timing locking tip of the timing cam and the normally open fire of the normally open fire locking piece The time difference between the front and back of the normally open fire clamp of the locking groove to engage the normally open cam of the normally open fire cam, so that the swing card of the swing seat is held on the normally open flange, or at the same time on the normally open flange and the periphery of the regular fire, Or stuck on the periphery of the timing fire, keep the normally open valve or gas passage control device in the open position to maintain the normally fired state, and maintain the normally fired state during the timing setting process without extinguishing the flame. The radius of the firing flange is larger or the same as the periphery of the timing fire of the timing cam.

The timing locking member is provided with a certain time locking tip, the timing cam is provided with a certain time locking slot, a certain time fire periphery, and a certain time flameout gap, and the timing locking member can borrow the timing card The movable pin is locked by the timing card, and the timing cam rotates on the timer rotating shaft; the normally open fire card is provided with a normally open fire card, the normally open fire cam is provided with a normally open fire card, and a normally open fire The flange is also provided with a second flameout notch, and the normally open fire catcher can use the normally open fire clip to catch the normally open fire clip through the slot, so that the normally open fire cam rotates on the timer rotating shaft. The normally-open fire catching slot is larger than the timing cam's timing catching slot. This device uses the timing catching tip of the timing catcher to catch the timing cam's timing catching slot and the normally-opening fire catcher's normal fire. The time difference between the front and back of the normal fire cam of the normal firing cam and the slot of the normal firing cam is locked so that the swing card of the swing seat is clamped on the normal fire flange, or on the circumferential edge of the normal fire and the regular fire. Or stuck on the periphery of the timing fire, keep the normally open valve or gas passage control device in the open position to maintain the normally fired state, and maintain the normally fired state during the timing setting process without extinguishing the flame. The radius of the firing flange is larger or the same as the periphery of the timing fire of the timing cam.

The front end of the swing seat is provided with two arms pivotally mounted on the pivot of the shaft frame, so that the swing seat can pivot up and down the rear end of the swing seat with the pivot as the center, and a swinging sloping plate inclined downward is provided in the middle section of the swing seat , The front edge of the front end can be clamped on the timing cam or/and the normal fire cam, so that the rear end of the swing seat can swing up and down.

Here is a better understanding of the technical characteristics of the creation and the effects achieved. I would like to use the illustration of the preferred embodiment to explain as follows:

Please refer to FIGS. 1 to 5, which is the first embodiment of the present creation. The gas timer mechanical timing device 1 includes a timer 10, a fixed time cam group 20, a normally open cam group 30, a swing seat 40 and a normally open Valve 50 . The gas timer mechanical timing device 1 of this creation can be used in conjunction with the solenoid valve 60, grill 70 and stove head 80, and can be installed in the gas stove as a device for shutting off the gas at regular intervals. As shown in the figure, the gas stove of this creation The mechanical timing device 1 can be connected to a solenoid valve 60. The solenoid valve 60 is provided with a gas inlet 61 and a gas outlet 62 (see FIG. 5), wherein the gas outlet 62 communicates with the gas inlet 51 of the normally open valve 50, and the normally open valve The outlet 52 of 50 is connected to the grill inlet 71 of the grill 70, and the grill outlet 72 is connected to the furnace head 80 (see FIG. 1), and the solenoid valve 60 has a thermocouple 81 located on the side of the furnace head 80. The thermocouple 81 can sense the temperature of the furnace head 80. If the temperature is lower than a certain temperature, the solenoid valve 60 will be closed, and the gas outlet 62 will be closed, so that the gas cannot pass into the furnace head 80, which can be used as a safety mechanism.

The timer 10 is a mechanical timer, which is installed in the gas stove, and one end of the timer rotating shaft 11 protrudes outside the gas stove, and is fixedly connected to the timer knob 12 outside the panel of the gas stove for turning the rotary knob 12, Can be used for automatic timing control.

Referring to FIG. 3, the timing cam group 20 includes a fixed-time locking member 21 and a fixed-time cam 22, the fixed timing member 21 is fixed on the timer rotating shaft 11 of the timer 10, and can rotate with the timer rotating shaft 11, The timing locking member 21 is provided with a certain time locking groove 211, and a first locking side 212 and a second locking side 213 are formed on both sides of the timing locking groove 211; the timing cam 22 is sleeved on the timer shaft On the 11th, the timing cam 22 is provided with a certain time locking tip 221 and a timing fire peripheral edge 222, and is provided with a certain time flameout notch 223, the intersection of the timing fire peripheral edge 222 and the timing flameout notch 223 forms a transition endpoint 224, the timing The locking groove 211 can lock the timing locking pin 221 to rotate the timing cam 22 on the timer rotating shaft 11.

The normally-fired cam group 30 includes a normally-fired catch 31 and a normally-fired cam 32. The normally-fired catch 31 is fixed on the timer shaft 11 of the timer 10 and can rotate with the timer shaft 11. The normally open fire catching member 31 is provided with a normally open fire catching groove 311, and a third catching side 312 and a fourth catching side 313 are formed on both sides of the normally open fire catching groove 311; On the rotary shaft 11 of the device, the normally-fire cam 32 is provided with a normally-fire catching tip 321, and a normally-fire flange 322 and a second flame-out notch 323, and a stop tab 324 is provided at the end of the normally-fire flange 322. In order to block the swinging clamping plate 42, an arc wall 325 is formed between the normally-fire flange 322 and the second flame-out gap 323, and the normally-fire catch groove 311 can catch the normally-fire catch 321 to make the normally-fire cam 32 Rotate on the timer shaft 11; the arc of the opening of the normally-opening fire-locking groove 311 of the normally-opening fire catch 31 is larger than the timing locking groove 211 of the timing-locking part 21, and the radius of the normally-fired fire flange 322 The perimeter of the fire is larger than the regular fire 222.

The two arms 41 at the front end of the swing seat 40 are pivotally mounted on the pivot 44 of the shaft frame 43, so that the swing seat 40 can swing the rear end of the swing seat 40 up and down about the pivot 44. The swing chuck 42 has a front end formed with a locking edge 421 that can be held on the timing cam 22 and the normally-fire cam 32 to swing the swing seat 40 up and down. A compression spring 45 presses the stem 54 at the lower end of the rear end to depress the stem 54 to lower or release the stem 54 to rise.

Please refer to Figs. 4-5, the normally open valve 50 is provided with a gas inlet 51 and a gas outlet 52, and a passage 53 is provided inside to communicate the gas inlet 51 and the gas outlet 52, and the normally open valve 50 is provided with a valve stem 54 The upper end of the valve stem 54 is set at the lower end of the rear end of the swing seat 40 to press down with the elastic force of the pressure spring 45, so that the conical valve plug 541 provided at the lower end of the valve stem 54 presses the gas outlet 52 to close the gas, When the rear end of the swing seat 40 is upward, the release valve stem 54 is raised by the elastic force of the spring 55, so that the conical valve plug 541 is separated from the gas outlet 52, and the normally open valve 50 is kept open, and gas can circulate.

The normally open valve 50 of the present invention can be made integrally with the roast gram 70 to save parts and do not need to be combined to save man-hour cost.

Please refer to Figures 5, 6, 7, 8 and 8A. In the initial state of unfired, that is, when the furnace head 80 is not ignited, the normally open valve 50 is normally open. At this time, the swing seat 40 The front end of the swinging chuck plate 42 is clamped on the normal fire flange 322 of the normal fire cam 32. The upper end of the rear end of the swing seat 40 bears the compression spring 45 at the upper end position. The rear end of the swing seat 40 does not The valve stem 54 of the normally open valve 50 will be depressed, and the valve plug 541 of the valve stem 54 will not press the gas outlet 52, so that the normally open valve 50 is kept open in a timely manner. The solenoid valve 60 is not ignited due to the fire of the furnace head 80 Therefore, the thermocouple 81 cannot sense the temperature, and the solenoid valve 60 is closed, which can be used as a safety mechanism.

Please refer to figures 1, 2, 3, 5, 6, 7, 8 and 8A. When starting to use, depress the gas switch knob 73 and turn it counterclockwise to fire with the electronic igniter 74 and the furnace head 80 When the fire is successfully ignited, the thermocouple 81 senses the heat and opens the solenoid valve 60. Therefore, the gas can be passed from the solenoid valve 60 to the normally open valve 50, and then to the grill 70, so that the burner 80 can be burned by the gas fire. It is used for cooking operations of frying, frying and frying under the condition of normally open fire. As shown in Figures 6, 7, 8 and 8A, the normally open position is used for normal frying, frying and frying cooking.

Please refer to figures 9, 10, 10A, 11 and 11A. When the fire on the stove head 80 is ignited, it should be set to regular stew cooking in the normally open cooking, as shown in the figure, turn the timer knob 12 to When rotating in the clockwise direction, the timer shaft 11 rotates, driving the timing catcher 21 and the normally open fire catcher 31 to rotate clockwise, turning to the first catching side 212 to catch the timing catching tip 221 first, so that the timing cam 22 Rotate clockwise, turn to the switching end point 224 of the locking timing cam 22 and cross the arc wall 325 of the normal firing flange 322, so that the locking end edge 421 of the front end of the swinging clamping plate 42 slides down to the timing fire peripheral edge 222, at this time , Because the normally-open fire catching groove 311 of the normally-fire catch 31 is larger than the timing catch groove 211 of the timing catch 21 (see FIG. 11), the third card of the normally-fire catch 31 The moving side 312 is slower to catch the normally-fired snapping tip 321 of the normally-fired cam 32, and the other side of the front end of the swinging clamping plate 42 is stuck on the arc wall 325 of the normally-fired flange 322 and has not left. Therefore, The flame continues to burn, that is, it will not extinguish. When the third locking side 312 is locked to the normally open fire locking tip 321, the normally open cam 32 rotates clockwise, and the locking edge of the front end of the swing card 42 is turned. When the other side of 421 is away from the arc wall 325 of the normally fired flange 322, the side of the locking edge 421 of the front end of the swing card 42 is still held on the peripheral edge 222 of the regular firing, so the front end of the swing card 42 is locked 421 will not fall into the timing flameout gap 223 of the timing cam 22, nor will it fall into the second flameout gap 323 of the normally open cam 32, the upper end of the rear end of the swing seat 40 still bears the compression spring 45 at the upper end position, and the swing seat The rear end of the 40 will not depress the valve stem 54 of the normally open valve 50, so that the normally open valve 50 remains open, and the furnace fire continues to burn without extinguishing. This is the mechanical timing device of this creation in the normally open fire In the process of switching to regular cooking during cooking, the opening of the normally-opened fire-locking groove 311 of the normally-opened fire-locking member 31 is larger than the timing-locked groove 211 of the timed-locking member 21. A time difference will occur when the tip 221 is clamped regularly, so that the locking edge 421 of the swing chuck plate 42 of the swing seat 40 is held on the normally-fire flange 322 during the timing setting process or simultaneously on the normally-fire flange The arc wall 325 of the rim 322 and the time-fired periphery 222 or are held on the time-fired periphery 222, so that the normal fire state is maintained during the timed cooking setting process without interrupting the cooking, so there is no need to re-ignite without re-ignition. Disadvantages, and no need to adjust the size of the flame, this is the main feature of this creation.

Please refer to Figures 12 and 12A. When the cooking time setting is completed, the furnace is still burning, the timer 10 starts timing, the timer shaft 11 rotates counterclockwise, and the timer shaft 11 drives the timing The locking member 21 and the normally-open fire locking member 31 rotate counterclockwise.

Please refer to Figures 13, 13A and 13B. During the timer 10 is counting, the timer shaft 11 rotates in the counterclockwise direction, and the timer shaft 11 drives the timing catch 21 and the normally open fire catch 31 for counterclockwise timing Turn (shown in the clockwise direction on the back of the timer shaft 11), turn to the second engaging side 213 of the timing catch 21 to first engage the timing catching tip 221 of the timing cam 22 to catch the timing cam 22 starts to rotate counterclockwise, because the arc of the normally open fire catching groove 311 of the normally open fire catch 31 is greater than the timing catch groove 211 of the timing catch 21, so the fourth of the normally open fire catch 31 The latching side 313 is slower to latch the second latching tip 321 of the normally open cam 32, the timer shaft 11 continues to rotate in a counterclockwise direction, and rotates to the fourth latching side 313 of the normally open latch 31 The second locking tip 321 of the firing cam 32 is clocked to rotate by turning the normally-fired cam 32 counterclockwise. At this time, the timing cam 22 and the normally-fired cam 32 rotate at the same time, and the swinging card 42 of the swinging seat 40 catches the end The edge 421 is clamped on the timing fire peripheral edge 222 of the timing cam 22 so that the rear end of the swing seat 40 is in the upper position, and the valve stem 54 is also in the upper position, so that the valve plug 541 of the valve stem 54 does not press the closed gas outlet 52, so that The normally open valve 50 remains normally open, so the furnace fire continues to burn.

Please refer to Figs. 14, 14A and 14B. When the time set for the simmering time is reached, that is, when the timing cam 22 and the normally open cam 32 rotate to the swing seat 42 of the swing seat 40 at the same time, the timing flameout gap 223 and the second flameout gap In the upper position of 323, the locking edge 421 of the front end of the swing card 42 falls into the timing flameout notch 223 and the second flameout gap 323, the swing card 42 swings downward, so that the rear end of the swing seat 40 swings downward, and the swing seat 40 The rear end is pressed by the compression spring 45, and the valve rod 54 of the normally open valve 50 is lowered downward, so that the valve plug 541 of the valve rod 54 presses the gas outlet 52 (see FIG. 5), and the gas outlet 52 is closed, so that Gas stopped supplying and stopped.

Please refer to Figures 15 and 15A. The timer 10 of this creation can be set to rotate in a counterclockwise direction after the set time has expired; when the gas stove is used for the timing of the set stewing time, the flame will be turned off and the normal will be restored. In the state of fire, you can use the timer 10 to delay the rotation or manually turn the timer knob 12 to turn counterclockwise, so that the timer shaft 11 rotates counterclockwise, driving the timing catch 21 and the normally fire catch 31 Rotate counterclockwise, and firstly engage the timing locking tip 221 of the timing cam 22 with the second locking side 213 of the timing clamp 21, and start to rotate counterclockwise with the locking timing cam 22, and then The third engaging side 312 of the firing catch 31 resists the normally-fire catching tip 321 of the normally-fire catch 32 to catch the normally-fire catch 32 to rotate in a counterclockwise direction, so that the front end of the swing catch 42 is caught along the edge 421 The arc wall 325 of the normally-fired flange 322 of the normally-fired cam 32 slides upward against the normally-fired flange 322 of the normally-fired cam 32, and the stopper tab 324 restricts the swinging clamping plate 42 from being positioned. At this time, the swinging seat 40 The upper end of the rear end presses the compression spring 45 at the upper end position. The rear end of the swing seat 40 does not press the stem 54 of the normally open valve 50. The stem 54 uses the elastic force of the spring 55 to raise the stem 54 and the stem 54 The valve plug 541 does not press the gas outlet 52, and after the normally open valve 50 is opened, the timing catch 21, the timing cam 22, the normally open fire catch 31 and the normally open fire cam 32 can be turned back automatically or manually The original unfired initial state (as shown in Figures 5, 6, 7, 8 and 8A).

Please refer to FIG. 16, which is the second embodiment of the present invention. Its structure is substantially the same as the first embodiment and has the same function. For simplicity, related components are marked with the same symbols and relevant descriptions are omitted. The difference is that the second embodiment of the present invention is provided with a timing catching tip 211A on the timing catch 21A of the timing cam set 20A, a timing catching slot 221A on the timing cam 22A, and a normal firing cam set The normally open fire catcher 31A of the 30A is provided with a normally open fire catching tip 311A, and the normally open fire cam 32A is provided with a normally open fire catching slot 321A, that is, the timing catching piece 211A of the timing catcher 21A is used to catch The timing locking slot 221A of the dynamic timing cam 22A and the normally open firing pin 311A of the normally open firing member 31A are used to engage the normally open firing slot 321A of the normally open cam 32A. The normally-on fire catching slot 321A is larger than the timing catching slot 221A of the timing cam 22A, and the same effect can be obtained.

The normally open valve 50 of this creation can also be replaced by various gas passage control devices to obtain the same effect.

If you want to turn off the fire in the use of normal fire or regular cooking, you can turn the gas switch knob 73 to turn off the gas supply and turn off the fire.

This creation can also be set for timed cooking in the unfired state, and then ignited. The procedure for setting the timed cooking is the same as the above setting for the regular cooking in the normally fired state. the same.

In the above embodiment, the radius of the normal firing flange 322 is set to be larger than the radius of the regular firing periphery 222. Of course, the radius can be set to the same radius as the regular firing periphery 222 to obtain the same effect.

To sum up, the original mechanical timer device of the gas stove is improved. The new idea of the above structure can make the mechanical timer device of the gas stove in the process of switching from the normally open state to the timer state, and it will not turn off, so there is no need to restart Ignite without adjusting the flame size. The function is convenient, simple, and has a stable operation, and it is deeply practical and industrially usable. The application for a patent for creation is filed according to law; however, the above description is only a description of the preferred embodiment of this creation. Any extension of the technical means of this creation should fall within the scope of the patent application for this creation.

1‧‧‧Timing device 10‧‧‧Timer 11‧‧‧Rotating shaft 12‧‧‧Timer knob 20‧‧‧Timing cam group 21‧‧‧Timing catch 211‧‧‧Timing catch groove 212‧ ‧‧Second clamping side 213‧‧‧Second clamping side 22‧‧‧Timing cam 221‧‧‧Timing clamping tip 222‧‧‧Timing fire perimeter 223‧‧‧Timing flameout gap 224‧‧‧ Conversion end Point 30‧‧‧Normally fire cam group 31‧‧‧Normally fire catch 311‧‧‧Normally fire catch groove 312‧‧‧ Third catch side 313‧‧‧Four catch side 32‧‧‧ Normally open fire cam 321‧‧‧ Normally open fire catching pin 322‧‧‧ Normally open fire flange 323‧‧‧Second flameout gap 324‧‧‧ Stop tab 325‧‧‧Arc wall 40‧‧‧Swing seat 41‧ ‧‧Front arms 42‧‧‧Swing chuck plate 421‧‧‧Clamping edge 45‧‧‧Compression spring 43‧‧‧Shaft rod holder 44‧‧‧Pivot 50‧‧‧Normally open valve 51‧‧‧ Gas inlet 52‧‧‧ Gas outlet 53‧‧‧ Channel 54‧‧‧ Stem 541‧‧‧Valve plug 60‧‧‧ Solenoid valve 61‧‧‧Gas inlet 62‧‧‧ Gas outlet 70‧‧‧Grill 71 ‧‧‧Grill inlet 72‧‧‧Grill outlet 73‧‧‧Switch knob 74‧‧‧Electronic ignition 80‧‧‧Burner head 81‧‧‧ Thermocouple

Figure 1 is a system diagram of the first embodiment of the creation; Figure 2 is a combined rear perspective view of the first embodiment of the creation; Figure 3 is an exploded back perspective view of the first embodiment of the creation; Figure 4 is the first Creation of the combined back view of the first embodiment; FIG. 5 is a side view of the combination of the creation of the first embodiment; FIG. 6 is the back perspective view of the normally fired cam group combination of the creation of the first embodiment; FIG. 7 FIG. 8 is an enlarged back view of the normally fired cam group combination of the first embodiment of the creation; FIG. 8 is an enlarged back view of the normally fired cam group combination of the first embodiment of the creation; FIG. 8A is a side view of FIG. 8; 9 is a rear perspective view of the combination of the timing setting state cam group of the first embodiment of the creation; FIG. 10 is an enlarged perspective view of the combination of the timing setting state cam group of the first embodiment of the creation; FIG. 10A is a schematic plan view of FIG. 10; FIG. 11 is an enlarged back view of the staggered combination of timing setting cam groups in the first embodiment of the creation; FIG. 11A is a side view of the eleventh view of FIG. 11; FIG. 12 is an enlarged back view of the combination of cam groups in the timing setting of the first embodiment of the creation Figure 12A is a side view of Figure 12; Figure 13 is a back view of the timing and timing combination of the first embodiment of the creation; Figure 13A is an enlarged back view of the timing and timing cam group of the first embodiment of the creation; FIG. 13B is a side view of FIG. 13A; FIG. 14 is a back view of the timing flameout combination of the first embodiment of the creation; FIG. 14A is an enlarged back view of the timing flameout cam group of the first embodiment of the creation; 14B The figure is a side view of FIG. 14A; FIG. 15 is an enlarged perspective view of the first embodiment of the creation and then turned to the normally open cam group after the regular flameout; FIG. 15A is the back view of FIG. 15; FIG. 16 is the first A partially exploded rear perspective view of the second embodiment.

1‧‧‧Timer

10‧‧‧Timer

11‧‧‧ timer shaft

12‧‧‧Timer knob

20‧‧‧ Timing cam group

30‧‧‧Normally open cam group

40‧‧‧swing seat

45‧‧‧Compression spring

50‧‧‧normally open valve

54‧‧‧Stem

60‧‧‧Solenoid valve

70‧‧‧g

72‧‧‧Grill Export

73‧‧‧Switch knob

74‧‧‧Electronic ignition

80‧‧‧Burner

81‧‧‧thermocouple

Claims (17)

An improvement of a mechanical timing device for a gas furnace is characterized in that the timing device is provided with a set of timing cam groups and a group of normally-fired cam groups on a timer rotating shaft of a timer, which is clamped on the timing cam groups and a swing seat The normally open fire cam group swings up and down to control the opening and closing of a normally open valve or a gas passage control device, so that the mechanical timing device does not move during the course of time setting during the normally open fire cooking. The normally open valve or the normally open valve is locked on the normally open cam group or at the same time on the normally open cam group and the timing cam group or on the timing cam group, so that the normally open valve or the The gas passage control device is kept in the open position and maintained in the normally open state without interrupting the cooking and interrupting the cooking, so that re-ignition can be avoided; the timing cam group includes a certain time locking member and a certain time cam, the timing locking member is fixed Set on the timer rotating shaft of the timer, it can rotate with the timer rotating shaft, the timing cam is sleeved on the timer rotating shaft, and the timing cam is used to lock the timing cam to rotate on the timer rotating shaft; the constant The fire cam group includes a normally open fire catch and a normally open fire cam. The normally open fire catch is fixed on the timer shaft of the timer and can rotate with the timer shaft. The normally open fire cam is sleeved at the timing On the rotating shaft of the timer, the normally-open fire cam is locked to rotate on the rotating shaft of the timer. The improvement of the mechanical timing device of the gas furnace as described in item 1 of the scope of the patent application, wherein the device uses the timing catcher to catch the timing cam and the normally open fire catcher to catch the normally open fire cam So that the swing seat is clamped on the normally open fire cam, or on the normally open fire cam and the timing cam at the same time, or on the timing cam, so that the normally open valve or the gas passage control device is kept in the open position While maintaining a state of constant fire, And the normal open fire state is maintained during the time setting in the normal open fire cooking without turning off the flame. The improvement of the mechanical timing device of the gas furnace as described in item 1 of the patent application scope, wherein the timing locking member of the timing cam group is provided with a certain time locking groove, and the timing cam is provided with a certain time locking tip and a The periphery of the regular fire, and there is a certain flameout gap, the timing locking member can use the timing locking groove to lock the timing cam to rotate on the timer rotating shaft; the normally open fire cam set of the normally open cam group is provided with a A normally-open fire-locking groove, the normally-open fire cam is provided with a normally-open fire-locking tip and a normally-open fire flange and is provided with a second flame-out gap, and the normally-open fire-locking member can be locked by the normally-open fire-locking groove The firing cam rotates on the timer shaft. The improvement of the mechanical timing device of the gas furnace as described in item 1 of the patent application scope, wherein the timing locking member is provided with a certain time locking tip, the timing cam is provided with a certain time locking groove, and a certain time fire peripheral edge, And there is a certain time flameout notch, the timing catching part can use the timing catching tip to catch the timing catching slot, so that the timing cam rotates on the timer shaft; the normal fire catching part is provided with a normal fire catching The normally-open fire cam is provided with a normally-open fire-locking slot and a normally-open fire flange and is provided with a second flame-out gap. Slot to make the normally open cam turn on the timer shaft. The improvement of the mechanical timing device of the gas furnace as described in item 1 of the patent application scope, wherein the normally open valve is provided with a gas inlet and a gas outlet, and a channel is provided inside to communicate the gas inlet and the gas outlet, the normally open valve A valve stem is provided, and a conical valve plug at the lower end of the valve stem is used to open and close the gas outlet. The improvement of the mechanical timing device of the gas furnace as described in item 1 of the patent application scope, wherein the normally open valve or the gas passage control device is made integrally with the grilling system. The improvement of the mechanical timing device of the gas furnace as described in item 1 of the patent application scope, wherein when the gas furnace is used to stop the flame after the time set by the timer, the timer shaft is rotated counterclockwise by the timer delay rotation to drive The timing clamping member and the normally open fire clamping member rotate counterclockwise, and the clamping timing cam and the normally open fire cam rotate counterclockwise, so that the swing seat does not press the valve stem of the normally open valve or the gas passage control device, so that the normal When the valve opening or gas passage control device is opened, the timing catch, the timing cam, the normally open fire catch and the normally open fire cam can be automatically turned back to the original unfired initial state. The improvement of the mechanical timing device of the gas furnace as described in item 1 of the scope of the patent application, wherein when the gas furnace is used to stop the flame after the time set by the timer, the timer knob is manually turned counterclockwise to rotate the timer shaft Turn counterclockwise to drive the timing catch and the normally open fire catch to rotate counterclockwise, and the timing cam and normally open fire cam to turn counterclockwise, so that the swing seat does not depress the normally open valve or gas passage control The valve stem of the device enables the normally open valve or gas passage control device to open, and can automatically turn the timing catch, the timing cam, the normally open fire catch and the normally open fire cam back to the original unfired initial state. An improvement of a mechanical timing device for a gas furnace. The timing device includes: a timer. The timer is a mechanical timer installed on a gas furnace platform. One end of its rotating shaft protrudes outside the panel of the gas furnace platform and is fixed to the timer Knob to control the timing by rotation; the fixed-time cam group includes a fixed-time cam and a fixed-time cam; the fixed-time cam is fixed on the timer shaft of the timer and can rotate with the timer shaft The timing cam sleeve is fixed on the rotating shaft of the timer, and the timing locking piece can lock the timing cam to rotate on the rotating shaft of the timer; A normally open fire cam group, the normally open fire cam group includes a normally open fire cam and a normally open fire cam; the normally open fire cam is fixed on the timer rotating shaft of the timer, and can rotate with the timer rotating shaft; The firing cam is sleeved on the timer rotating shaft, and the normally-fire catching member can be used to rotate the normally-fire cam on the timer rotating shaft; a swing seat is arranged above the valve stem of a normally-open valve or a gas passage control device, The front end of the swing seat is clamped on the timing cam or/and the normally fired follower cam to swing the swing seat up and down to depress the valve stem to lower or release the valve stem to rise; a normally open valve or gas passage control device, the constant The valve opening or gas passage control device is provided with a valve stem to open or close the gas. The upper end of the valve stem is placed on the swing seat. When the swing seat is pressed down, the valve stem is closed. When the swing seat is up, the normal Open the valve or the gas passage control device to maintain the normally open state; and the timing cam and the normally open fire catcher to lock the normally open fire cam, so that the mechanical timing device can make regular cooking settings in the normally open fire During the process, the swing seat is clamped on the normally open fire cam, or on the normally open fire cam and the timing cam at the same time, or on the timing cam, will not fall into the flameout gap, so that the normally open valve or gas passage The control device is kept in the open position to maintain the normally open fire state, while maintaining the normally open fire state during the timed cooking setting process without turning off the fire. The improvement of the mechanical timing device of the gas furnace as described in item 9 of the patent application scope, wherein the timing locking member of the timing cam group is provided with a certain time locking groove, and the timing cam is provided with a certain time locking tip and a The periphery of the regular fire, and there is a certain flameout gap, the timing locking member can use the timing locking groove to lock the timing cam to rotate on the timer rotating shaft; the normally open fire cam set of the normally open cam group is provided with a A normally-open fire-locking groove, the normally-open fire cam is provided with a normally-open fire-locking tip and a normally-open fire flange and is provided with a second flame-out gap, the The normally open fire catching part can use the normally open fire catching groove to catch the normally open fire cam to rotate on the timer rotating shaft. The improvement of the mechanical timing device of the gas furnace as described in item 3 or 10 of the scope of the patent application, wherein the normally-fired snap groove of the normally-fired snap is larger than that of the timing snap. The improvement of the mechanical timing device of the gas furnace as described in item 3 or 10 of the patent application scope, wherein the device uses the timing locking groove of the timing locking member to lock the timing locking tip of the timing cam and the normal fire locking The time difference between the front and back of the normally open fire catching groove of the piece and the normally open fire catching end of the normally open fire cam to make the swing card of the swing seat to be held on the normally open fire flange, or to be held on the normally open fire flange and timing at the same time On the periphery of the fire, or stuck on the periphery of the regular fire, keep the normally open valve or gas passage control device in the open position to maintain the normally fired state, and maintain the normally fired state during the timing setting process without flameout. The improvement of the mechanical timing device of the gas furnace as described in item 9 of the patent application scope, wherein the timing locking member is provided with a certain time locking tip, the timing cam is provided with a certain time locking groove, and a certain time fire peripheral edge, And there is a certain time flameout notch, the timing catching part can use the timing catching tip to catch the timing catching slot, so that the timing cam rotates on the timer shaft; the normal fire catching part is provided with a normal fire catching The normally-open fire cam is provided with a normally-open fire-locking slot and a normally-open fire flange and is provided with a second flame-out gap. Slot to make the normally open cam turn on the timer shaft. The improvement of the mechanical timing device of the gas furnace as described in item 4 or 13 of the patent application range, wherein the normally-opening fire-trapping slot of the normally-fire cam is larger than that of the timing cam. The improvement of the mechanical timing device of the gas furnace as described in item 4 or 13 of the patent application range, wherein the device uses the timing locking tip of the timing locking member to clamp the timing locking slot of the timing cam and the normally open fire locking Before and after the slot of the normally open fire clip of the piece is locked by the normally open fire cam of the normally open fire cam before and after the slot, the swing card of the swing seat is held on the normally open fire flange, or simultaneously held on the normally open fire flange and timing On the periphery of the fire, or stuck on the periphery of the regular fire, keep the normally open valve or gas passage control device in the open position to maintain the normally fired state, and maintain the normally fired state during the timing setting process without flameout. The improvement of the mechanical timing device of the gas furnace as described in item 3, 4 or 10 or 13 of the scope of the patent application, wherein the radius of the normally-fired flange of the normally-fired cam is larger or the same as that of the timing-fired periphery of the timing cam. The improvement of the mechanical timing device of the gas furnace as described in item 1 or 9 of the patent application scope, wherein the front end of the swing seat is provided with two arms pivoted on the shaft frame, so that the swing seat is centered on the pivot axis. The rear end of the swing seat swings up and down, and a swinging sloping plate inclined downward is provided in the middle section of the swing seat, and the front end of the swing seat can be clamped on the timing cam or/and the normally-fire cam to make the rear end of the swing seat up and down swing.

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