Fire cover protection mechanism and gas stove

Abstract

The utility model relates to the technical field of gas appliances, and discloses a fire cover protection mechanism and a gas stove. The gas stove comprises a fire cover protection mechanism, the fire cover protection mechanism comprises an opening and closing assembly and a driving assembly, the opening and closing assembly is arranged above a fire cover, the driving assembly can drive the opening and closing assembly to be switched between a folded state and an unfolded state, in the folded state, the opening and closing assembly avoids flames generated by the fire cover, and in the unfolded state, the opening and closing assembly is driven by the driving assembly. And the opening and closing assembly can shield the upper part of the fire hole of the fire cover. According to the fire cover protection mechanism, flames generated by the fire holes can be shielded above the fire holes or avoided according to requirements, fire cover flameout or blockage caused by overflow can be prevented, and the flames at the fire holes cannot be blocked at other time. According to the gas stove, by arranging the fire cover protection mechanism, the problems that the gas stove flames out and cannot ignite due to overflow can be avoided, and the heating effect on cookware is good.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to a fire cover protection mechanism and a gas stove. Background Art

[0002] A gas stove is a very commonly used kitchen appliance. Usually, a gas stove includes a burner, a center fire cover, an outer ring fire cover, an ignition needle and a thermocouple. The center fire cover and the outer ring fire cover are both covered on the burner, and the ignition needle and the thermocouple are both set on one side of the center fire cover. When the gas stove is working, the gas and air are mixed in the burner and discharged from the fire holes of the center fire cover and the outer ring fire cover. The ignition needle first ignites the gas discharged from the fire holes at the corresponding positions of the center fire cover, and then further ignites the gas at other positions of the center fire cover and the fire holes on the outer ring fire cover. In addition, the thermocouple can monitor the temperature at the corresponding position of the center fire cover in real time. When the temperature is lower than the preset value, the thermocouple will stop the gas stove from supplying gas to the burner, thereby forming a flameout protection and improving the safety of the gas stove.

[0003] When using a gas stove for cooking, the problem of pot overflow often occurs. The overflowed food soup (hereinafter referred to as overflow) will flow along the pot to the center fire cover, and then flow into the fire hole of the center fire cover, causing the fire hole of the center fire cover to flame out and the fire hole to be blocked. If the fire hole corresponding to the thermocouple is extinguished, it will trigger the flameout protection function of the gas stove, which will cause the gas supply to be cut off and the gas stove to flame out as a whole. If the fire hole corresponding to the ignition needle is blocked, it will cause subsequent ignition failure.

[0004] In order to solve the above problem, the prior art usually provides a ridge protruding above the fire hole of the central fire cover to block the liquid from flowing into the fire hole. However, the ridge blocks the flame at the fire hole to a certain extent while blocking the overflowing liquid, that is, the flame is continuously blocked even when there is no overflowing liquid, thus affecting the heating effect of the gas stove on the cookware.

[0005] Therefore, there is an urgent need for a fire cover protection mechanism and a gas stove to solve the above-mentioned technical problems. Utility Model Content

[0006] The purpose of the utility model is to provide a fire cover protection mechanism, which can shield the top of the fire hole or avoid the flame generated by the fire hole according to needs, so as to prevent the fire cover from being extinguished or blocked due to overflow, and will not block the flame at the fire hole at other times.

[0007] Another object of the utility model is to provide a gas stove, which, by providing the above-mentioned fire cover protection mechanism, can not only avoid the problem of the gas stove being turned off or unable to ignite due to overflow, but also has a good heating effect on the pot.

[0008] To achieve this purpose, the utility model adopts the following technical solutions:

[0009] The fire cover protection mechanism includes an opening and closing component and a driving component. The opening and closing component is arranged above the fire cover, and the driving component can drive the opening and closing component to switch between a retracted state and an extended state. In the retracted state, the opening and closing component avoids the flame generated by the fire cover, and in the extended state, the opening and closing component can block the top of the fire hole of the fire cover.

[0010] As an optional solution, the opening and closing assembly includes:

[0011] A support member, fixedly mounted relative to the fire cover;

[0012] A plurality of blades are arranged along the circumference of the support member, and the blades are pivotally connected to the support member through a pivot. The drive assembly can drive the blades to rotate relative to the support member around their pivot axes so that the blades are close to the center of the support member and avoid the flames generated by the fire hole, or are away from the center of the support member to cover the fire hole.

[0013] As an optional solution, two adjacent blades are staggered in height direction.

[0014] As an optional solution, the blade has three edges, and the edge opposite to the corresponding pivot is defined as a shielding edge, and the shielding edge is constructed in an arc shape. When the opening and closing assembly is in the folded state, the shielding edges of several blades form a circle.

[0015] As an optional solution, the blade has three edges, and the edge adjacent to the pivot and close to the center of the support member is defined as the inner edge. A limiting groove is provided on the inner edge, and the limiting groove can be engaged on the pivot of the blade adjacent to it.

[0016] As an optional solution, the driving component includes:

[0017] A driving source is arranged below the fire cover;

[0018] A transmission assembly passes through the center hole of the fire cover in the up-down direction, the lower end of the transmission assembly is connected to the driving source, and the upper end is connected to the plurality of blades respectively. The driving source drives each blade to rotate around its pivot axis relative to the support member through the transmission assembly.

[0019] As an optional solution, the transmission assembly includes:

[0020] A transmission shaft passes through the center hole in the up-down direction, and a first transmission part and a second transmission part are respectively provided at the lower end and the upper end of the transmission shaft;

[0021] A first transmission member is connected to the output end of the driving source and cooperates with the first transmission part to drive the transmission shaft assembly to rotate;

[0022] A plurality of second transmission members, the pivot of each blade is connected to a second transmission member, and the plurality of second transmission members are in transmission cooperation with the second transmission part to drive the corresponding blade to rotate.

[0023] As an optional solution, the first transmission member and the first transmission part are gears and mesh with each other; and / or

[0024] The second transmission part and the second transmission member are both gears, and each of the second transmission members is meshed with the second transmission part.

[0025] As an optional solution, it also includes a humidity detection component, which is electrically connected to the driving component. The humidity detection component is used to detect the humidity at the opening and closing component and enable the driving component to drive the opening and closing component to switch states.

[0026] A gas stove comprises a burner, a fire cover, a thermocouple, an ignition needle and the fire cover protection mechanism, wherein the fire cover is arranged on the burner, the thermocouple and the ignition needle are arranged on one side of the fire cover, and the opening and closing assembly can shield the fire cover or avoid the flame generated by the fire cover.

[0027] The beneficial effects of the utility model are:

[0028] The fire cover protection mechanism of the utility model has a driving component that can drive the opening and closing component to switch between a retracted state and an extended state. In the retracted state, the opening and closing component avoids the flame generated by the fire cover, thereby avoiding obstruction of the flame; in the extended state, the opening and closing component can block the fire hole of the fire cover, thereby preventing overflow from entering the fire hole of the fire cover and causing flameout or blockage of the fire hole.

[0029] The gas stove of the utility model is provided with the above-mentioned fire cover protection mechanism. When the pot overflows, the opening and closing assembly switches to the expanded state, thereby preventing the overflow from causing the fire hole to go out or be blocked, thereby preventing the thermocouple from triggering the flameout protection and avoiding the problem of being unable to ignite. When the pot does not overflow, the opening and closing assembly switches to the retracted state, thereby avoiding obstruction of the flame and ensuring a better heating effect of the gas stove on the pot. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic cross-sectional structure diagram of a gas stove provided in a specific embodiment of the utility model;

[0031] Figure 2 It is an exploded view of a gas stove provided in a specific embodiment of the utility model;

[0032] Figure 3 It is a structural schematic diagram of the fire cover protection mechanism provided by the specific embodiment of the utility model at one viewing angle;

[0033] Figure 4 It is a top view of the central fire cover and the fire cover protection mechanism in the unfolded state provided by the specific embodiment of the utility model;

[0034] Figure 5 It is a top view of the central fire cover and the fire cover protection mechanism in the retracted state provided by the specific embodiment of the utility model;

[0035] Figure 6 It is a schematic diagram of the fire cover protection mechanism provided by the specific embodiment of the utility model under another viewing angle;

[0036] Figure 7 yes Figure 1 Enlarged view of point A in .

[0037] In the figure:

[0038] 10. Support mechanism; 11. Chassis; 12. Bracket; 13. Upper cover; 14. Panel;

[0039] 20. Nozzle seat;

[0040] 30. Stove head;

[0041] 40. Outer ring fire cover;

[0042] 50. Center fire cover;

[0043] 60. Fire cover protection mechanism;

[0044] 61, opening and closing assembly; 611, supporting member; 612, blade; 6121, shielding edge; 6122, inner side edge; 6123, limiting groove; 613, pivot; 614, supporting rod;

[0045] 62, driving assembly; 621, driving source; 622, transmission assembly; 6221, transmission shaft; 6222, first transmission part; 6223, second transmission part; 6224, first transmission member; 6225, second transmission member;

[0046] 63. Humidity detection parts;

[0047] 64. Base;

[0048] 70. Water tray;

[0049] 80. Pot rack;

[0050] 90. Cookware. DETAILED DESCRIPTION

[0051] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0052] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0054] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0055] This embodiment provides a fire cover protection mechanism and a gas stove. Figure 1 and Figure 2As shown, the gas stove includes a support mechanism 10, a nozzle seat 20, a burner head 30, an outer ring fire cover 40, a center fire cover 50, an ejector assembly, a thermocouple, an ignition needle and a control assembly. The nozzle seat 20 is mounted on the support mechanism 10, the burner head 30 is mounted on the nozzle seat 20, and the outer ring fire cover 40 and the center fire cover 50 are both covered on the burner head 30. The center fire cover 50 and the outer ring fire cover 40 are both annular and coaxially arranged, that is, the center fire cover 50 has a center hole, the outer ring fire cover 40 is arranged around the outside of the center fire cover 50, and the center fire cover 50 and the outer ring fire cover 40 are both provided with fire holes. A gas mixing channel is provided in the burner head 30, the inlet of the gas mixing channel is connected to the ejector assembly, and the outlet of the gas mixing channel is connected to the fire hole. The ejector assembly is used to introduce gas and air into the gas mixing channel, and the gas and air are mixed in the burner head 30 and discharged from the fire holes on the center fire cover 50 and the outer ring fire cover 40, and burn at the fire hole. The ignition needle is arranged between the central fire cover 50 and the outer ring fire cover 40, and is opposite to the fire hole on the central fire cover 50. The ignition needle first ignites the gas at the fire hole opposite to it, and then ignites the gas at other fire holes of the central fire cover 50 and the fire holes of the outer ring fire cover 40. The thermocouple is arranged between the central fire cover 50 and the outer ring fire cover 40, and is opposite to the fire hole on the central fire cover 50. The thermocouple is electrically connected to the control component. When the thermocouple detects that the temperature is lower than the preset value (i.e., it is considered that the central fire cover 50 has a flameout problem), the control component controls the ejection component to stop supplying gas to the burner head 30, thereby playing a role in flameout protection.

[0056] In this embodiment, Figure 2 As shown, the support mechanism 10 includes a chassis 11, a bracket 12, an upper cover 13 and a panel 14 which are arranged in sequence from bottom to top. The bracket 12 is mounted on the chassis 11, the nozzle holder 20 is mounted on the bracket 12, and the ejection assembly, the control assembly and the pipelines and electrical components of the gas stove can be mounted on the chassis 11. The upper cover 13 covers the chassis 11, thereby protecting the components mounted on the chassis 11. The panel 14 is covered on the upper side of the upper cover 13, thereby making the gas stove more beautiful as a whole. Avoidance holes are correspondingly arranged on the upper cover 13 and the panel 14, and the avoidance holes are used to avoid the installation of the nozzle holder 20 and the burner head 30. Preferably, the gas stove also includes a water receiving tray 70, which is mounted on the upper side of the panel 14, and the water receiving tray 70 can block the avoidance hole on the panel 14, thereby preventing external dust, overflow, etc. from entering the interior of the support mechanism 10. Preferably, the gas stove further includes a pot rack 80, which is supported on the water receiving tray 70 and is arranged around the outer periphery of the burner 30. The pot rack 80 is used to stably support the pot 90. In this embodiment, the gas stove includes two burners 30. In other embodiments, the gas stove may also be provided with only one burner 30 or three or more burners 30.

[0057] When using a gas stove for cooking, the problem of pot overflow often occurs. The overflowed food soup (hereinafter referred to as overflow) will flow along the pot to the center fire cover, and then flow into the fire hole of the center fire cover, causing the fire hole of the center fire cover to flame out and the fire hole to be blocked. If the fire hole corresponding to the thermocouple is extinguished, the flameout protection function of the gas stove will be triggered, which will lead to gas supply interruption and the entire gas stove being extinguished. If the fire hole corresponding to the ignition needle is blocked, it will lead to subsequent ignition failure. In order to solve the above problems, the prior art usually provides a convex rib above the fire hole of the center fire cover, and the rib is used to block the liquid from flowing into the fire hole. However, the rib blocks the flame at the fire hole to a certain extent while blocking the overflow, that is, it will continue to block the flame when there is no overflow, affecting the heating effect of the gas stove on the pot.

[0058] In this regard, Figure 2 As shown, the gas stove of this embodiment is also provided with a fire cover protection mechanism 60. It should be noted that, since the ignition needle and the thermocouple in this embodiment are opposite to the fire hole on the central fire cover 50, the fire cover protection mechanism 60 is mainly used to protect the central fire cover 50, so as to avoid the problem of accidental flameout or failure to ignite due to overflow of the gas stove. Of course, in other embodiments, for a gas stove without a central fire cover 50, the fire cover protection mechanism 60 can also be configured to protect the outer ring fire cover 40.

[0059] like Figure 2-Figure 5 As shown, the fire cover protection mechanism 60 includes an opening and closing component 61 and a driving component 62. The opening and closing component 61 is arranged above the central fire cover 50, and the driving component 62 can drive the opening and closing component 61 to switch between a retracted state and an extended state. In the retracted state, the opening and closing component 61 avoids the flame generated by the central fire cover 50, thereby preventing the opening and closing component 61 from blocking the flame at the central fire cover 50; in the extended state, the opening and closing component 61 can block the fire hole of the central fire cover 50, thereby preventing the overflow from entering the fire hole of the central fire cover 50 and causing the fire to go out or the fire hole to be blocked. When the gas stove is used for cooking and the pot 90 has overflow, the opening and closing component 61 is switched to the extended state, thereby preventing the overflow from causing the fire hole to go out or be blocked, thereby preventing the thermocouple from triggering the flameout protection, and avoiding the problem of being unable to ignite. When there is no overflow in the pot 90, the opening and closing component 61 is switched to the retracted state, thereby avoiding blocking the flame and ensuring a good heating effect of the gas stove on the pot 90.

[0060] In this embodiment, the fire cover protection mechanism 60 further includes a base 64, the base 64 is mounted on the support mechanism 10, and the drive assembly 62 is mounted on the base 64. Of course, in other embodiments, the drive assembly 62 can also be directly mounted on the support mechanism 10, which is not specifically limited here. Optionally, the opening and closing assembly 61 can also be supported on the base 64 or directly supported on the support mechanism 10.

[0061] like Figure 3-Figure 5 As shown, the opening and closing assembly 61 includes a support member 611 and a plurality of blades 612. The support member 611 is disposed above the central fire cover 50 and is fixedly installed relative to the central fire cover 50. The plurality of blades 612 are arranged along the circumference of the support member 611, and each blade 612 is fixedly connected to a pivot 613, which is pivotally connected to the support member 611, thereby realizing the pivot connection between the blade 612 and the support member 611. The driving assembly 62 can drive the blade 612 to rotate relative to the support member 611 around its pivot axis, so that the blade 612 is close to the center of the support member 611 and avoids the flame generated by the fire hole, or is away from the center of the support member 611 to cover the fire hole.

[0062] In this embodiment, Figure 6 As shown in FIG. 1 , the fire hole on the central fire cover 50 is tilted outward from bottom to top, so the flame at the fire hole is also tilted outward. Figure 4 As shown, when the opening and closing assembly 61 is in the unfolded state, the projection of the entire opening and closing assembly 61 in the horizontal plane is larger than the projection of the central fire cover 50 in the horizontal plane. At this time, the opening and closing assembly 61 can well cover the fire hole on the central fire cover 50 to prevent the overflow from falling on the central fire cover 50 and blocking the fire hole on the central fire cover 50. Figure 5 As shown, when the opening and closing assembly 61 is in the retracted state, the projection of the opening and closing assembly 61 on the horizontal plane coincides with the projection of the center fire cover 50 in the horizontal plane. Since the flame is tilted outward, the opening and closing assembly 61 will not block the flame, ensuring that the flame of the center fire cover can better heat the pot 90. Of course, in other embodiments, when the opening and closing assembly 61 is in the retracted state, its projection on the horizontal plane can also be set to be smaller than the projection of the center fire cover 50 in the horizontal plane, which is not specifically limited here.

[0063] In this embodiment, the opening and closing assembly 61 includes six blades 612, and the support member 611 is a hexagonal plate. The pivot 613 connected to each blade 612 is correspondingly installed at the corner of the support member 611. In other embodiments, the number of blades 612 and the shape of the support member 611 can be flexibly set, and are not specifically limited here. Optionally, a mounting hole is provided on the support member 611, and each pivot 613 can be installed in a mounting hole through a bearing, so as to achieve a pivot connection with the support member 611. In other embodiments, a mounting hole is provided on the support member 611, and the pivot 613 directly rotates with the mounting hole. It should be noted that in this embodiment, a limiter needs to be provided to axially limit the pivot 613 to prevent the pivot 613 from falling off the support member 611.

[0064] like Figure 4 and Figure 5As shown, each blade 612 has three edges, and the edge opposite to the pivot 613 is defined as the shielding edge 6121. The shielding edge 6121 is constructed in an arc shape. When the opening and closing component 61 is in the folded state, the shielding edges 6121 of each blade 612 are arranged to form a circle, thereby making the overall structure more beautiful and less prone to scratches with other structures.

[0065] like Figure 4 and Figure 5 As shown, the edge of the blade 612 adjacent to the pivot 613 and close to the center of the support member 611 is defined as the inner side edge 6122, and a limiting groove 6123 is provided on the inner side edge 6122. In the retracted state, the limiting groove 6123 can be engaged with the pivot 613 of the blade 612 adjacent thereto. Through the engagement of the limiting groove 6123 with the pivot 613, the rotation angle of the blade 612 can be limited, ensuring that the projection of the opening and closing assembly 61 in the horizontal plane is a circle in the retracted state.

[0066] like Figure 6 As shown, two adjacent blades 612 are staggered in the height direction. Therefore, it is possible to avoid position interference between adjacent blades 612 when they are in the retracted state. In this embodiment, one of the two adjacent blades 612 is arranged on the upper side of the support member 611, and the other is arranged on the lower side of the support member 611. In this way, among all the blades 612, half of the blades 612 are located on the upper side of the support member 611, and half of the blades 612 are located on the lower side of the support member 611, and the overall structure is more compact and more beautiful. In other embodiments, all the blades 612 can also be arranged on the upper side of the support member 611, or all can be arranged on the lower side of the support member 611, as long as the adjacent blades 612 are staggered in the height direction, and no specific limitation is made here.

[0067] like Figure 3 and Figure 6 As shown, the driving assembly 62 includes a driving source 621 and a transmission assembly 622, wherein the driving source 621 is arranged below the central fire cover 50, and the transmission assembly 622 penetrates the central hole of the central fire cover 50 in the up-down direction. The lower end of the transmission assembly 622 is in driving connection with the driving source 621, and the upper end is respectively in driving connection with a plurality of blades 612, and the driving source 621 drives each blade 612 to rotate relative to the support member 611 around its pivot axis through the transmission assembly 622. By arranging the transmission assembly 622 to penetrate the central hole of the central fire cover 50 in the up-down direction, it is not only ensured that the transmission assembly 622 will not be exposed outside the gas stove, but also that the driving source 621 can be arranged inside the support mechanism 10, ensuring that the entire fire cover protection mechanism 60 will not interfere with the placement of the pot 90, and will not affect the aesthetics of the gas stove.

[0068] like Figure 6As shown, the transmission assembly 622 includes a transmission shaft 6221, a first transmission part 6222, a second transmission part 6223, a first transmission member 6224 and a plurality of second transmission members 6225, wherein the transmission shaft 6221 passes through the central hole of the central fire cover 50 in the up-down direction, and the first transmission part 6222 and the second transmission part 6223 are fixedly connected to the lower end and the upper end of the transmission shaft 6221 respectively. The first transmission member 6224 is connected to the output end of the driving source 621, and the driving source 621 can drive the first transmission member 6224 to rotate. The first transmission member 6224 and the first transmission part 6222 are in transmission cooperation to drive the transmission shaft 6221 assembly to rotate, and then drive the second transmission part 6223 to rotate. The pivot 613 of each blade 612 is connected to a second transmission member 6225, and the plurality of second transmission members 6225 are all in transmission cooperation with the second transmission part 6223, so that the second transmission part 6223 drives each blade 612 to rotate. By setting the transmission assembly 622, it is possible to achieve synchronous rotation of multiple blades 612 through a rotating drive source 621, thereby achieving state switching of the opening and closing assembly 61, reducing the number of drive sources 621 and reducing costs. In this embodiment, the drive source 621 is installed on the base 64, and the transmission shaft 6221 can be connected to the base 64 through a bearing for rotation.

[0069] Preferably, if Figure 7 As shown, the transmission shaft 6221 is a hollow shaft, and the opening and closing assembly 61 further includes a support rod 614, which is arranged inside the transmission shaft 6221, and the upper end of the support rod 614 is connected to the support member 611, and the lower end of the support rod 614 is connected to the support mechanism 10, thereby achieving the fixed installation of the support member 611 relative to the fire cover. Of course, in other embodiments, the lower end of the support rod 614 can also be connected to the base 64, which is not specifically limited here.

[0070] In this embodiment, Figure 6 As shown, the first transmission member 6224 and the first transmission part 6222 are gears and mesh with each other, so that the rotational motion of the driving source 621 can be transmitted to the transmission shaft 6221, with a simple structure and high transmission accuracy. The second transmission part 6223 and the second transmission member 6225 are gears. The second transmission part 6223 and the second transmission member 6225 are gears and mesh with each other, so that the rotational motion of the transmission shaft 6221 can be transmitted to each blade 612, with a simple structure and high transmission accuracy. In other embodiments, the first transmission member 6224 and the first transmission part 6222 can both be pulleys, and the first transmission member 6224 and the first transmission part 6222 are transmitted by belts. In other embodiments, the first transmission member 6224 and the first transmission part 6222 can also be both set to sprockets, and the first transmission member 6224 and the first transmission part 6222 are transmitted by chains.

[0071] like Figure 6As shown, the fire cover protection mechanism 60 also includes a humidity detection member 63, which is electrically connected to the drive assembly 62. The humidity detection member 63 is used to detect the humidity at the opening and closing assembly 61. The drive assembly 62 can drive the opening and closing assembly 61 to switch states according to the humidity detection result. Specifically, the humidity detection member 63 and the drive assembly 62 are both electrically connected to the control assembly of the gas stove. When the humidity detected by the humidity detection member 63 is less than a preset value, it indicates that there is no overflow at present. At this time, the drive assembly 62 does not act, and the opening and closing assembly 61 remains in the retracted state; when the humidity detection member 63 detects that the humidity at the opening and closing assembly 61 is greater than or equal to the preset value, it indicates that there is overflow falling on the opening and closing assembly 61. After the control assembly receives the signal sent by the humidity detection member 63, it makes the drive assembly 62 work to switch the opening and closing assembly 61 to the unfolded state to prevent the overflow from falling on the central fire cover 50. Optionally, the humidity detection member 63 can be a humidity sensor.

[0072] In some embodiments, the fire cover protection mechanism 60 includes a humidity detection member 63, and is disposed on the support member 611. In some embodiments, the fire cover protection mechanism 60 includes multiple humidity detection members 63, and a humidity detection member 63 is disposed on each blade 612. When the humidity detected by any humidity detection member 63 is greater than or equal to a preset value, the drive component 62 switches the opening and closing component 61 to the unfolded state. This solution can better prevent the fire hole of the central fire cover 50 from being blocked by overflow and the flame from being extinguished by overflow. In other embodiments, humidity detection members 63 may also be disposed on both the support member 611 and the blade 612, which is not specifically limited here.

[0073] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the field, according to the idea of ​​the utility model, there will be changes in the specific implementation methods and application scopes, and the content of this specification should not be understood as limiting the utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. Fire cover protection mechanism, characterized in that: The invention comprises an opening and closing component (61) and a driving component (62), wherein the opening and closing component (61) is arranged above a fire cover, and the driving component (62) can drive the opening and closing component (61) to switch between a retracted state and an extended state. In the retracted state, the opening and closing component (61) avoids the flame generated by the fire cover, and in the extended state, the opening and closing component (61) can block the fire hole of the fire cover.

2. The fire cover protection mechanism according to claim 1, characterized in that: The opening and closing assembly (61) comprises: A support member (611) is fixedly mounted relative to the fire cover; A plurality of blades (612) are arranged along the circumference of the support member (611); the blades (612) are pivotally connected to the support member (611) via a pivot (613); the drive assembly (62) is capable of driving the blades (612) to rotate relative to the support member (611) around their pivot axes, so that the blades (612) are close to the center of the support member (611) and avoid flames generated by the fire hole, or are away from the center of the support member (611) to cover the fire hole.

3. The fire cover protection mechanism according to claim 2, characterized in that: Two adjacent blades (612) are staggered in height direction.

4. The fire cover protection mechanism according to claim 2, characterized in that: The blade (612) has three edges, and the edge opposite to the corresponding pivot (613) is defined as a shielding edge (6121). The shielding edge (6121) is constructed in an arc shape. When the opening and closing component (61) is in a folded state, the shielding edges (6121) of a plurality of the blades (612) form a circle.

5. The fire cover protection mechanism according to claim 4, characterized in that: The blade (612) has three edges, and the edge adjacent to the pivot (613) and close to the center of the support member (611) is defined as the inner edge (6122). A limiting groove (6123) is provided on the inner edge (6122), and the limiting groove (6123) can be engaged on the pivot (613) of the blade (612) adjacent thereto.

6. The fire cover protection mechanism according to any one of claims 2 to 5, characterized in that: The drive assembly (62) comprises: A driving source (621) is arranged below the fire cover; A transmission assembly (622) passes through the central hole of the fire cover in the up-down direction. The lower end of the transmission assembly (622) is transmission-connected to the driving source (621), and the upper end is transmission-connected to the plurality of blades (612). The driving source (621) drives each blade (612) to rotate around its pivot axis relative to the support member (611) through the transmission assembly (622).

7. The fire cover protection mechanism according to claim 6, characterized in that: The transmission assembly (622) comprises: A transmission shaft (6221) passes through the central hole in the up-down direction, and a first transmission part (6222) and a second transmission part (6223) are respectively provided at the lower end and the upper end of the transmission shaft (6221); A first transmission member (6224) is connected to the output end of the driving source (621) and is in transmission cooperation with the first transmission part (6222) to drive the transmission shaft (6221) assembly to rotate; A plurality of second transmission members (6225), the pivot (613) of each blade (612) is connected to a second transmission member (6225), and a plurality of second transmission members (6225) are all in transmission cooperation with the second transmission part (6223) to be able to drive the corresponding blade (612) to rotate.

8. The fire cover protection mechanism according to claim 7, characterized in that: The first transmission member (6224) and the first transmission part (6222) are both gears and mesh with each other; and / or The second transmission part (6223) and the second transmission member (6225) are both gears, and each of the second transmission members (6225) is meshed with the second transmission part (6223).

9. The fire cover protection mechanism according to any one of claims 2 to 5, characterized in that: It also includes a humidity detection component (63), the humidity detection component (63) is electrically connected to the driving component (62), and the humidity detection component (63) is used to detect the humidity at the opening and closing component (61) and enable the driving component (62) to drive the opening and closing component (61) to switch states.

10. A gas stove, characterized in that: It comprises a burner head (30), a fire cover, a thermocouple, an ignition needle and a fire cover protection mechanism as claimed in any one of claims 1 to 9, wherein the fire cover is arranged on the burner head (30), the thermocouple and the ignition needle are arranged on one side of the fire cover, and the opening and closing component (61) can shield the top of the fire cover or avoid the flame generated by the fire cover.

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