CN112984575A - Gas-cooker closes controlling means and gas-cooker of fiery - Google Patents

Abstract

The invention provides a control device for shutting off a gas stove and the gas stove, and relates to the technical field of kitchen appliances, wherein the control device for shutting off the gas stove comprises an identification mechanism and a control valve group electrically connected with the identification mechanism; the identification mechanism comprises a contact switch and a plurality of trigger pieces, and the plurality of trigger pieces correspond to the clamping gears of the gas stove switch one by one; the control valve group is electrically connected with the contact switch and used for judging whether the contact switch is in contact with the trigger part or not when the gear is adjusted and determining whether fire is turned off or not by comparing the contact time of the contact switch and the trigger part with the set time corresponding to the trigger part set inside. According to the invention, the technical problems that a user forgets to close the gas stove after cooking, so that gas is wasted, and danger is caused by possible damage to a cooker or even fire when the user is serious are solved, and the technical effect of ensuring the safety of the user is achieved.

Description

Gas-cooker closes controlling means and gas-cooker of fiery

Technical Field

The invention relates to the technical field of kitchen appliances, in particular to a control device for shutting off a gas stove and the gas stove.

Background

The gas stove is one of the most commonly used electric appliances in daily life and plays an important role in the cooking process of people. People may leave the kitchen due to external interference such as a telephone in the cooking process, and may forget to turn off the gas stove after the cooking is finished, which may cause waste of gas, and may damage a pot or even cause a fire in a serious case, thereby causing danger to users.

Disclosure of Invention

The invention aims to provide a control device for turning off a gas stove and the gas stove, so as to solve the technical problems that in the prior art, users forget to turn off the gas stove, so that gas is wasted, cookware can be damaged in serious conditions, even fire disasters are caused, and dangers are caused.

The invention provides a control device for shutting off a gas stove, which comprises an identification mechanism and a control valve group electrically connected with the identification mechanism; the identification mechanism comprises a contact switch and a plurality of trigger pieces, and the plurality of trigger pieces correspond to the clamping gears of the gas stove switch one by one; the control valve group is electrically connected with the contact switch and used for judging whether the contact switch is in contact with the trigger part or not when the gear is adjusted and determining whether fire is turned off or not by comparing the contact time of the contact switch and the trigger part with the set time corresponding to the trigger part set inside.

Further, the trigger piece includes the ring that is used for with the coaxial fixed connection of valve shaft of gas-cooker switch, and the periphery wall of ring is provided with the arch that is used for touching with the contact switch.

Further, the trigger piece comprises a gear ring, and the protrusion is gear teeth of the gear ring.

Further, the gear ring includes a first type of teeth having a first length dimension and a second type of teeth having a second length dimension, the first length dimension being greater than the second length dimension; one type of teeth corresponds to one of a high fire gear or a low fire gear of a gas stove switch, and the second type of teeth corresponds to the other of the high fire gear or the low fire gear of the gas stove switch.

Furthermore, the gear ring comprises a first-class tooth area and a second-class tooth area, wherein a plurality of first-class teeth are distributed in the first-class tooth area along the circumferential direction of the gear ring, and a plurality of second-class teeth are distributed in the second-class tooth area along the circumferential direction of the gear ring.

Furthermore, the gear ring comprises two second-type tooth areas and a first-type tooth area, and the first-type tooth area is arranged between the two second-type tooth areas along the circumferential direction of the gear ring; the contact switch comprises a first switch and a second switch, the first switch and the second switch are arranged on two opposite sides of the gear ring, the distance between the first switch and the outer peripheral wall of the gear ring is equal to the length of one type of teeth, and the distance between the second switch and the outer peripheral wall of the gear ring is equal to the length of two types of teeth.

Further, the first switch and the second switch are both microswitches.

Further, the control valve group comprises an electromagnetic valve and a controller, the electromagnetic valve is used for being connected with a gas circuit of the gas stove, the controller is electrically connected with the contact switch and the electromagnetic valve respectively, the controller starts timing when the contact switch is detected to be in contact with the trigger piece, timing duration is compared with set duration inside the controller corresponding to the contact switch, and when the timing duration is longer than the set duration inside the controller corresponding to the contact switch, the controller controls the electromagnetic valve to be closed to close the gas circuit.

Further, the control valve group comprises an electromagnetic valve connected with a gas circuit of the gas stove and a controller with a timing function, the controller is respectively electrically connected with the contact switch and the electromagnetic valve, the controller starts timing when detecting that the contact switch is contacted with the trigger piece, and judges whether the first switch is contacted or the second switch is contacted; when the first switch is contacted, comparing the timing duration with a set duration T1 inside the controller corresponding to the first switch, and when the timing duration is greater than the set duration T1 inside the controller corresponding to the first switch, the controller controls the electromagnetic valve to close the gas path; when the second switch is contacted, the timing duration is compared with the set duration T2 inside the controller corresponding to the second switch, and when the timing duration is longer than the set duration T2 inside the controller corresponding to the second switch, the controller controls the electromagnetic valve to close so as to close the air passage.

Further, the controller comprises a timing module, and the timing module starts timing after receiving the starting information.

The invention also provides a gas stove, which comprises a gas stove switch and the control device for switching off the gas stove; the gas stove switch comprises a mechanical gear valve, and the mechanical gear valve comprises a valve shaft and clamping gears which correspond to the valve shaft in different rotation angles one by one; the plurality of triggers are fixedly connected with the valve shaft and can rotate along with the rotation of the valve shaft.

Furthermore, when the trigger is a gear ring, the two sides of the gear ring along the axial direction of the valve shaft are respectively provided with a split retainer ring for limiting.

Furthermore, two identical clamping grooves for arranging the split retainer rings are formed in the valve shaft of the mechanical gear valve.

Further, the gas stove further comprises a mounting plate, and the contact switch and the control valve group are both fixedly mounted on the mounting plate.

The invention provides a gas stove switch and a gas stove, which have the beneficial effects that:

the invention provides a control device for shutting off a gas stove and the gas stove, wherein the control device for shutting off the gas stove comprises an identification mechanism and a control valve group electrically connected with the identification mechanism; the identification mechanism comprises a contact switch and a plurality of trigger pieces, and the plurality of trigger pieces correspond to the clamping gears of the gas stove switch one by one; the control valve group is electrically connected with the contact switch and used for judging whether the contact switch is in contact with the trigger part or not when the gear is adjusted and determining whether fire is turned off or not by comparing the contact time of the contact switch and the trigger part with the set time corresponding to the trigger part set inside.

According to the invention, when a user leaves during cooking or forgets to close the gas stove after cooking is finished, the control valve group judges whether the contact switch is in contact with the trigger piece, if so, judges whether the contact time of the contact switch and the trigger piece exceeds the set time corresponding to the trigger piece set in the control valve group, and if so, the fire is turned off. The problems that the waste of gas possibly occurs in the situations, cookware can be damaged in serious situations, and even fire disasters are caused, so that the danger of users is caused are solved.

The invention also provides a gas stove, which comprises all the technical characteristics of the control device for shutting down the fire of the gas stove, so the technical effects are also achieved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a front view of a schematic structural diagram of a fire-off control device of a gas stove according to an embodiment of the present invention;

fig. 2 is an exploded view of a fitting of a fire-off control device of a gas range according to an embodiment of the present invention;

fig. 3 is a top view of a schematic structural diagram of a fire-shutting control device for a gas stove according to an embodiment of the present invention;

fig. 4 is a schematic circuit diagram of a control device for fire shutoff of a gas stove according to an embodiment of the present invention;

fig. 5 is a control logic diagram of the control device for fire-off of the gas stove provided by the embodiment of the invention.

Icon: 100-mechanical gear valve; 110-a valve shaft; 120-upper cover plate; 130-an ignition switch; 200-an identification mechanism; 210-a gear ring; 220-split washer; 230-a first switch; 240-a second switch; 250-a mounting plate; 211-class a teeth; 212-a type of tooth b; 213-class II teeth a; 214-type two teeth b; 215-type two teeth c; 216-class tooth c; 217-class tooth d; 218-class tooth e.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally laid out when products of the present invention are used, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

The gas stove is one of the most commonly used electric appliances in daily life and plays an important role in the cooking process of people. People may leave the kitchen due to external interference such as telephone or forget to turn off the gas stove after cooking, which may result in waste of gas, and may damage the cooker in serious cases, even cause fire, and threaten the personal safety of users.

Based on this, the embodiment of the invention provides a control device for turning off a gas stove and the gas stove, so as to relieve the technical problems that users forget to turn off the gas stove in some technologies, so that waste of gas is caused, a cooker can be damaged in serious cases, even a fire disaster is caused, and dangers are caused.

The embodiment provides a control device for fire extinguishing of a gas stove, as shown in fig. 1 to 5, comprising an identification mechanism 200 and a control valve group electrically connected with the identification mechanism 200; the recognition mechanism 200 comprises a contact switch and a plurality of trigger pieces, and the plurality of trigger pieces correspond to the clamping gears of the gas stove switch one by one; the control valve group is electrically connected with the contact switch and used for judging whether the contact switch is in contact with the trigger part or not when the gear is adjusted and determining whether fire is turned off or not by comparing the contact time of the contact switch and the trigger part with the set time corresponding to the trigger part set inside.

According to the invention, when a user leaves during cooking or forgets to close the gas stove after cooking is finished, the control valve group judges whether the contact switch is in contact with the trigger piece, if so, judges whether the contact time of the contact switch and the trigger piece exceeds the set time corresponding to the trigger piece set in the control valve group, and if so, the fire is turned off. The problem of the waste of the gas that leads to when having alleviated above-mentioned condition and taking place, probably damage the pan when serious, arouse the conflagration even is alleviated.

In this embodiment, as shown in fig. 1 to 3, the trigger includes a ring coaxially and fixedly connected to the valve shaft 110 of the gas stove switch, and a protrusion for contacting the contact switch is disposed on an outer peripheral wall of the ring. The ring and the valve shaft 110 may be connected by a key, or may be connected by other means, as long as the ring can be axially fixed to transmit the rotational motion and torque of the valve shaft 110 to the ring. The circular ring and the bulge can be integrally formed or fixedly connected by a split structure. In this embodiment, the ring and the protrusion are integrally formed. When the valve shaft 110 rotates, the ring thereon rotates, and the protrusion on the ring also rotates along with the ring, so as to achieve the contact with the trigger.

Illustratively, as shown in FIG. 1, the trigger member includes a gear ring 210, and the protrusions are gear teeth on the gear ring 210. It should be noted that the triggering member in this embodiment is a structure formed by the gear ring 210 and the gear teeth, and is shaped like a gear, and does not have the transmission function of the gear.

In this embodiment, the gear ring 210 includes a first type of teeth having a first length dimension and a second type of teeth having a second length dimension, the first length dimension being greater than the second length dimension; one type of teeth corresponds to one of a high fire gear or a low fire gear of a gas stove switch, and the second type of teeth corresponds to the other of the high fire gear or the low fire gear of the gas stove switch. The length dimension is the length from the root to the tip of the gear tooth. The high fire gear and the low fire gear of the gas stove switch are opposite, and the fire output of the high fire gear is larger than that of the low fire gear. In this embodiment, the first type of teeth corresponds to the high fire position of the gas range switch, and the second type of teeth corresponds to the low fire position of the gas range switch.

Further, the gear ring 210 includes a first-type tooth area and a second-type tooth area, wherein a plurality of first-type teeth are distributed in the first-type tooth area along the circumferential direction of the gear ring 210, and a plurality of second-type teeth are distributed in the second-type tooth area along the circumferential direction of the gear ring 210. Specifically, each first-class tooth corresponds to a low-fire gear or a high-fire gear, each second-class tooth corresponds to a low-fire gear or a high-fire gear, the valve shaft rotates to drive the gear ring to rotate, different gear teeth are in contact with the trigger to represent different gas stove clamping gears at the moment, the control valve group judges which gear is in contact with the trigger by judging which gear tooth is in contact with the trigger, and whether the fire is turned off or not is determined according to the set duration corresponding to the gear.

In this embodiment, the gear ring 210 includes two second-type tooth regions and one first-type tooth region, and the first-type tooth region is disposed between the two second-type tooth regions along the circumferential direction of the gear ring 210; the contact switches include a first switch 230 and a second switch 240, which are disposed on opposite sides of the gear ring 210; the first switch 230 is spaced apart from the outer circumferential wall of the gear ring 210 by a length equal to one type of teeth, and the second switch 240 is spaced apart from the outer circumferential wall of the gear ring 210 by a distance equal to the length of two type of teeth. It should be noted that the first-type or second-type tooth regions are arranged in a staggered manner, and each first-type or second-type tooth has no tooth at the opposite position on the gear ring 210, so that only one tooth is in contact with the contact switch, and therefore, the gear information of the identification mechanism 200 can be accurately represented. Further, when the valve shaft is in the initial state (unfired state), one type of tooth area is located on one side of the line connecting the first switch 230 and the second switch 240, and both types of tooth areas are located on the other side of the line connecting the first switch 230 and the second switch 240. When the valve shaft rotates counterclockwise continuously from the initial state, the teeth in the first second-type tooth area contact the second switch 240 in sequence, after the teeth in the first second-type tooth area contact the second switch 240, the teeth in the first-type tooth area contact the first switch 230 in sequence, and after the teeth in the first-type tooth area contact the first switch 230, the teeth in the second-type tooth area contact the second switch 240 in sequence.

In this embodiment, the first switch 230 and the second switch 240 are respectively in contact with the gear teeth with different lengths, the gear teeth with different lengths correspond to different fire states (for example, one type of gear corresponds to a high fire state, and the second type of gear corresponds to a low fire state), different durations are set in the control valve group according to the high fire state and the low fire state, whether the gear is in the high fire state or the low fire state is determined by determining whether the first switch or the second switch is in contact, and whether the fire is turned off is determined by comparing the duration of the gear with the duration of the set time. For example, in the present embodiment, when the first switch 230 is closed, the gas valve is in a high fire state; when the second switch 240 is closed, the gas valve is in a low fire state. The control valve group judges whether the high fire state is changed into the low fire state or not by judging which contact switch is closed, and compares the set time of the high fire state or the set time of the low fire state to determine whether the fire is closed or not.

It should be further noted that the range of rotation of the valve shaft is 180 degrees, so that each gear tooth can contact the trigger 1 time within the range of rotation of the valve shaft. The trigger corresponds to the position of the gas stove switch, and when the gas stove switch is locked at one position, one type of tooth is contacted with the first switch 230, or one type of tooth is contacted with the second switch 240. In this case, when the user switches the gas stove between different gears during use, the contact switch is turned off briefly.

It should be noted that, as shown in fig. 2, the first switch 230 and the second switch 240 are disposed on opposite sides of the gear ring 210, and are not absolutely relative, but are relative in terms of relative, as long as the contact between the first switch 230 and the first-type teeth and the contact between the second switch 240 and the second-type teeth are not interfered with each other.

In this embodiment, the first switch 230 and the second switch 240 are both micro switches. It should be noted that the first switch 230 and the second switch 240 may function as contact switches, and are not limited to the micro switches used in the present embodiment.

Optionally, in this embodiment, as shown in fig. 3, the gas stove has eight gears, and the rotation angles of the valve shaft corresponding to each gear are respectively 30 °, 50 °, 70 °, 90 °, 115 °, 135 °, 155 °, and 175 °; gear ring 210 has eight teeth, three of which are a type of tooth, teeth 213, 214, and 215, respectively; of which 5 are of a type two teeth, teeth 211, 212, 216, 217 and 218 respectively.

When the gas valve is closed, the gear ring is not contacted with any contact switch; when the valve shaft is rotated 30 counter-clockwise, the tooth 211 contacts the second switch 240; when the valve shaft is rotated 50 counterclockwise, the teeth 212 contact the second switch 240; when the valve shaft is rotated 70 ° counterclockwise, the teeth 213 contact the first switch 230; when the valve shaft is rotated 90 counterclockwise, the teeth 214 contact the first switch 230; when the valve shaft is rotated 115 counter-clockwise, the teeth 215 contact the first switch 230; when the valve shaft is rotated 135 counter-clockwise, the teeth 218 contact the second switch 240; when the valve shaft is rotated 155 counterclockwise, the tooth 217 contacts the second switch 240; when the valve shaft is rotated 175 counterclockwise, the teeth 216 contact the second switch 240.

In this embodiment, the control valve group includes an electromagnetic valve for connecting with the gas path of the gas stove and a controller with a timing function, as shown in fig. 4, the controller is electrically connected with the contact switch and the electromagnetic valve, the controller starts timing when detecting that the contact switch is in contact with the trigger, and compares the timing duration with the set duration inside the controller corresponding to the contact switch, and when the timing duration is longer than the set duration inside the controller corresponding to the contact switch, the controller controls the electromagnetic valve to close the gas path.

Specifically, in this embodiment, the control valve set includes an electromagnetic valve for connecting with the gas path of the gas stove and a controller with a timing function, the controller is electrically connected with the contact switch and the electromagnetic valve, as shown in fig. 5, the controller starts timing when detecting that the contact switch is in contact with the trigger, and determines whether the first switch 230 is in contact with the second switch 240; when the first switch 230 is contacted, comparing the timing duration with the set duration T1 inside the controller corresponding to the first switch 230, and when the timing duration is longer than the set duration T1 inside the controller corresponding to the first switch 230, the controller controls the electromagnetic valve to close the air path; when the second switch 240 is contacted, the timing duration is compared with the set duration T2 inside the controller corresponding to the second switch 240, and when the timing duration is longer than the set duration T2 inside the controller corresponding to the second switch 240, the controller controls the electromagnetic valve to close the air passage. It should be noted that, in general, the set time period T1 inside the controller corresponding to the first switch 230 and the set time period T2 inside the controller corresponding to the second switch 240 are factory settings, and the set time period in the high-fire state is smaller than the set time period in the low-fire state. For example, in the present embodiment, when the first switch 230 is closed, the gas valve is in a high fire state; when the second switch 240 is closed and the gas valve is in a low-fire state, the set time period T1 inside the controller corresponding to the first switch 230 should be shorter than the set time period T2 inside the controller corresponding to the second switch 240.

In this embodiment, the controller includes a timing module, and the timing module starts timing after receiving the start information. The starting information means that a timer reset instruction is received, and the timer reset instruction can be sent out under two conditions, wherein one condition is that the gas stove is started; alternatively, during use by the user, the controller detects that none of the tact switches in the identification mechanism 200 are closed, indicating that the timer needs to be re-timed while the user is adjusting the gas valve position.

The embodiment also provides a gas stove, which comprises a gas stove switch and the control device for switching off the gas stove; the gas stove switch comprises a mechanical gear valve 100, wherein the mechanical gear valve 100 comprises a valve shaft 110 and clamping gears which are in one-to-one correspondence with different rotation angles of the valve shaft 110; a plurality of triggers are fixedly coupled to the valve shaft 110 and are rotatable in response to rotation of the valve shaft 110. The mechanical range valve 100 further includes an ignition switch 130, and the ignition switch 130 is used to ignite the gas range, independently of the contact switch of the recognition mechanism 200. The mechanical range valve further includes an upper cover plate 120.

In this embodiment, when the trigger is a gear ring 210, the gear ring 210 is provided with a split retaining ring 220 respectively at two axial sides along the valve shaft 110 for limiting. The gear ring 210 is fixed in the middle by two split retaining rings 220, and cannot axially displace, so that the gear ring 210 can only rotate by taking the valve shaft 110 as the center of gravity, and the contact switch is always kept on the same horizontal plane.

In this embodiment, the valve shaft 110 of the mechanical position valve 100 has two identical slots for installing the circlip 220. The distance between the upper and lower surfaces of the two slots is equal to the thickness of the split retaining ring 220, and the distance between the lower surface of the upper slot and the upper surface of the lower slot is equal to the thickness of the gear ring 210. In this case, the gear ring 210, and both circlips 220, can remain stationary in the direction of the valve shaft 110.

In this embodiment, the gas stove further includes a mounting plate 250, and the contact switch and the control device are both mounted and fixed on the mounting plate 250. The contact switch and mounting plate 250 may be connected by threads or other means that prevent relative displacement. The mounting plate 250 is fixedly mounted on the upper cover plate 120 of the mechanical range valve 100, and the mounting plate 250 and the upper cover plate 120 may be connected by a screw thread or other connection methods that prevent them from relative displacement.

The following describes the operation process of the fire-off control device for the gas stove provided by the invention:

in this embodiment, when the user starts cooking, the gas stove is started at a certain gear, the control valve set is started accordingly, and the controller in the control valve set instructs the built-in timer to reset and count time. After the timer begins to time, the controller judges whether the contact switch is closed or not through detection.

If any of the contact switches are closed, the controller detects which of the closed contact switches is closed (i.e., determines whether the first switch is closed or the second switch is closed). If the first switch is closed, the gas stove is in a high fire state (the first switch is set to correspond to the high fire state, and the second switch is set to correspond to the low fire state).

When the gas stove is detected to be in a high-fire state, comparing the timing duration with a set duration T1 in the controller corresponding to the first switch 230, if the timing duration is less than T1, returning to detect whether a contact mechanism is closed, and repeating the process; if the timing duration is longer than T1, the controller controls the electromagnetic valve to close the gas path, so that the cooker is extinguished.

Similarly, when the gas stove is detected to be in a low-fire state, the timing duration is compared with the set duration T2 in the controller corresponding to the second switch 240, if the timing duration is less than T2, the detection is returned to detect whether the contact mechanism is closed, and the process is repeated; if the timing duration is longer than T2, the controller controls the electromagnetic valve to close the gas path, so that the gas stove is flamed out.

When a user switches the gas stove at different gears in use, the contact switch can be switched off briefly, so that if the contact switch is not switched on, the situation that the user is adjusting the gear of the gas stove is indicated, the situation that the user operates the gas stove does not need to start a timing function, and therefore the timer is reset.

Through the process, the control valve group can finish the work of judging whether the contact switch is contacted with the trigger part or not and determining whether the fire is turned off or not by comparing the contact time of the contact switch with the trigger part with the set time corresponding to the trigger part set inside.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (14)

1. The control device for fire shutting of the gas stove is characterized by comprising an identification mechanism (200) and a control valve group electrically connected with the identification mechanism (200);

the recognition mechanism (200) comprises a contact switch and a plurality of trigger pieces, and the trigger pieces correspond to clamping gears of the gas stove switch one by one;

the control valve group is electrically connected with the contact switch and used for judging whether the contact switch is in contact with the trigger part or not when the gear is adjusted and determining whether fire is turned off or not by comparing the contact time of the contact switch and the trigger part with the set time corresponding to the trigger part set in the control valve group.

2. The fire-off control device for the gas stove as recited in claim 1, wherein the trigger comprises a circular ring coaxially and fixedly connected with a valve shaft (110) of a gas stove switch, and the outer peripheral wall of the circular ring is provided with a protrusion for contacting with the contact switch.

3. The fire-off control device for the gas stove according to claim 2, wherein the trigger member comprises a gear ring (210), and the protrusion is a gear tooth of the gear ring (210).

4. The gas range fire-shutting control device according to claim 3, wherein the gear ring (210) comprises one kind of teeth of a first length dimension and two kinds of teeth of a second length dimension, the first length dimension being greater than the second length dimension; the first-class teeth correspond to one of a high-fire gear or a low-fire gear of a gas stove switch, and the second-class teeth correspond to the other of the high-fire gear or the low-fire gear of the gas stove switch.

5. The fire-extinguishing control device for the gas stove according to claim 4, characterized in that the gear ring (210) comprises a first-type tooth area and a second-type tooth area, wherein a plurality of first-type teeth are distributed in the first-type tooth area along the circumferential direction of the gear ring (210), and a plurality of second-type teeth are distributed in the second-type tooth area along the circumferential direction of the gear ring (210).

6. The fire-off control device for the gas range according to claim 5, wherein the gear ring (210) comprises two second-type tooth regions and one first-type tooth region, and the one first-type tooth region is arranged between the two second-type tooth regions along the circumferential direction of the gear ring (210); the contact switch comprises a first switch (230) and a second switch (240) which are arranged on two opposite sides of the gear ring (210), the distance between the first switch (230) and the outer peripheral wall of the gear ring (210) is equal to the length of the first class of teeth, and the distance between the second switch (240) and the outer peripheral wall of the gear ring (210) is equal to the length of the second class of teeth.

7. The fire-off control device for the gas stove according to claim 6, characterized in that the first switch (230) and the second switch (240) are both micro switches.

8. The control device for turning off the fire of the gas stove according to claim 1, wherein the control valve group comprises an electromagnetic valve and a controller with a timing function, the electromagnetic valve is used for being connected with a gas path of the gas stove, the controller is respectively electrically connected with the contact switch and the electromagnetic valve, the controller starts timing when the contact switch is detected to be in contact with the trigger piece, the timing duration is compared with the set duration in the controller corresponding to the contact switch, and when the timing duration is longer than the set duration in the controller corresponding to the contact switch, the controller controls the electromagnetic valve to be turned off to close the gas path.

9. The control device for turning off the gas stove fire according to claim 6, characterized in that the control valve set comprises a solenoid valve connected with a gas circuit of the gas stove and a controller with a timing function, the controller is respectively electrically connected with the contact switch and the solenoid valve, the controller starts timing when the contact switch is detected to be contacted with the trigger piece, and judges whether a first switch (230) is contacted or a second switch (240) is contacted; when the first switch (230) is contacted, comparing the timing duration with a set duration T1 inside a controller corresponding to the first switch (230), and when the timing duration is longer than the set duration T1 inside the controller corresponding to the first switch (230), controlling the electromagnetic valve to be closed to close the gas circuit by the controller; when the second switch (240) is contacted, the timing duration is compared with the set duration T2 in the controller corresponding to the second switch (240), and when the timing duration is longer than the set duration T2 in the controller corresponding to the second switch (240), the controller controls the electromagnetic valve to close the air passage.

10. The device for controlling fire-off of a gas stove according to claim 8 or 9, wherein the controller comprises a timing module, and the timing module starts timing after receiving the start-up message.

11. A gas range comprising a gas range switch and a control device for shutting down the gas range according to any one of claims 1 to 10; the gas stove switch comprises a mechanical gear valve (100), wherein the mechanical gear valve (100) comprises a valve shaft (110) and clamping gears which correspond to different rotation angles of the valve shaft (110) one by one;

the plurality of triggers are fixedly connected with the valve shaft (110) and can rotate along with the rotation of the valve shaft (110).

12. The gas burner of claim 11, wherein when the trigger is a gear ring (210), the gear ring (210) is provided with a split retaining ring (220) respectively at two axial sides of the valve shaft (110).

13. Gas range according to claim 12, characterized in that the valve shaft (110) of the mechanical range valve (100) has two identical notches for the snap ring (220).

14. The gas range of claim 11, further comprising a mounting plate (250), wherein the contact switch and the control valve set are fixed on the mounting plate (250).

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