A burner, a gas stove and a furnace head

Abstract

The utility model belongs to the combustion technical field, specifically discloses a kind of furnace end, combustor and gas cooking utensil. Furnace end includes hearth and height adjusting mechanism. The hearth has center suction channel and vertically arranged center vent pipe, and the lower end of the center vent pipe is communicated with the center suction channel. Height adjusting mechanism includes lifting sleeve and adjusting unit, the lifting sleeve is slidably sleeved outside the center vent pipe and upper end is higher than the center vent pipe, the upper end of the lifting sleeve is used to install center fire cover, the adjusting unit is matched with the lower part of the lifting sleeve, to make the lifting sleeve can be sequentially switched between multiple height positions, and the lifting sleeve can exit a height position when being pressed and switch and be limited in another adjacent height position after being released. The utility model can make the combustor adapt to different bottom shapes of pot at the same time, improve the use flexibility and use safety of combustor and gas cooking utensil.

Description

Technical Field

[0001] This utility model relates to the field of combustion technology, and in particular to a burner head, burner and gas stove. Background Technology

[0002] The burner heats the cookware by igniting and burning gas. It is usually equipped with an inner ring burner cap and an outer ring burner cap that is spaced outside the inner ring burner cap. When cooking over low heat, only the flame is present at the fire hole of the inner ring burner cap. When cooking over high heat, flames are present at both the inner and outer ring burner caps.

[0003] The prior art provides a burner including a base, a central burner cap, and an outer ring burner cap. The central burner cap is spring-loaded and resiliently connected to the base in a vertical direction. When a pot is placed on the central burner cap, the weight of the pot compresses the spring, causing the pot to move downwards until it is simultaneously supported by the central burner cap and the pot support. When the pot detaches from the central burner cap, the central burner cap springs back upwards under the elastic force of the spring, returning the central burner cap to a position higher than the outer ring burner cap.

[0004] While existing burners can adapt the center burner cap to cookware with different bottom shapes through the spring mechanism, the cap will return to its original position under the action of the elastic element when the cookware detaches from it. This causes the cookware to frequently hit the center burner cap during cooking, especially when tossing the pot, resulting in noticeable cooking noise and affecting the user's cooking experience. Furthermore, long-term use can easily damage both the cookware and the center burner cap. Utility Model Content

[0005] One of the technical problems solved by this utility model is to provide a burner head that can effectively solve the problem of existing burners easily colliding with cookware during cooking, thereby improving the reliability of the burner head.

[0006] The second technical problem solved by this utility model is to provide a burner that can effectively solve the problem of existing burners being easily bumped into cookware, thereby improving the safety and reliability of the burner.

[0007] The third technical problem solved by this utility model is to provide a gas stove that can effectively solve the problem of insufficient safety and reliability of existing gas stoves due to the burner easily bumping into the pot.

[0008] The first technical problem mentioned above is solved by the following technical solution:

[0009] A stove head, comprising:

[0010] A furnace base, the furnace base having a central ejector channel and a vertically arranged central vent pipe, the lower end of the central vent pipe being connected to the central ejector channel;

[0011] The height adjustment mechanism includes a lifting sleeve and an adjustment unit. The lifting sleeve is slidably sleeved on the outside of the central vent pipe and its upper end is higher than the central vent pipe. The upper end of the lifting sleeve is used to install the central flame cap. The adjustment unit cooperates with the lower part of the lifting sleeve so that the lifting sleeve can switch sequentially between multiple height positions. The lifting sleeve can be pushed out of a height position when pressed and switched and limited to another adjacent height position after being released.

[0012] Compared with the prior art, the burner head of this utility model has the following advantages: By setting an adjustment unit and a lifting sleeve, the lifting sleeve can be switched to one of multiple height positions during the pressing and releasing operation. Thus, the upper height of the lifting sleeve can be adjusted by pressing and releasing the lifting sleeve, thereby adjusting the height of the central burner cap installed on the upper end of the lifting sleeve. This allows the height of the central burner cap to meet the needs of different types of cookware, improving the cooking experience. Simultaneously, since the lifting sleeve can be adjusted to a certain height and then moved upwards to that height position via the adjustment unit, it ensures the stable setting of the lifting sleeve at that height, preventing frequent upward resets that could cause collisions with the cookware. Furthermore, this design also allows for a designed gap between the upper end of the central burner cap and the bottom of different cookware, ensuring heating of cookware with different bottom shapes while preventing the cookware from bumping into the central burner cap during cooking, thus extending the lifespan of both the central burner cap and the cookware.

[0013] In one embodiment, the furnace base has an adjustment cavity surrounding the central vent pipe, the adjustment cavity extending through the upper end of the furnace base, the lower end of the lifting sleeve being slidably inserted into the adjustment cavity, and the adjustment unit being located between the bottom of the adjustment cavity and the lower end of the lifting sleeve.

[0014] In one embodiment, the wall of the adjustment cavity is provided with a locking group, the locking group including a plurality of locking positions spaced apart circumferentially along the adjustment cavity, and all the locking positions in the same locking group have different heights;

[0015] The adjustment unit includes an adjustment ring and an elastic element. The adjustment ring is rotatably sleeved on the outside of the central vent pipe and has an adjustment part that cooperates with the locking position. The lower end of the lifting sleeve presses against the adjustment ring, and the elastic element applies an upward elastic force to the adjustment ring.

[0016] The downward movement of the lifting sleeve pushes the adjusting ring to move downward and rotate circumferentially along the central vent pipe, so that the adjusting part is disengaged from a locking position. The lifting sleeve and the adjusting ring can move upward under the action of the elastic member, so that the adjusting part moves and locks in an adjacent locking position.

[0017] In one embodiment, the locking assembly includes a plurality of locking grooves spaced circumferentially along the adjustment cavity, the locking grooves extending vertically and the upper end of each locking groove forming the locking position, the lower end of all the locking grooves communicating with the adjustment cavity, and the adjustment part being able to enter and exit any of the locking grooves.

[0018] And / or, the lower end of the lifting sleeve is provided with an actuating inclined surface, the actuating inclined surface is set at an angle to the axial direction of the lifting sleeve, and the adjusting ring is provided with a pushing inclined surface, the pushing inclined surface is in contact with the actuating inclined surface.

[0019] In one embodiment, the adjusting part is slidably inserted into the locking groove on the side away from the center line of the adjusting ring, and the upper end of the adjusting part has the pushing slope.

[0020] In one embodiment, multiple locking groups are evenly spaced along the circumference of the lifting sleeve, and the circumferential distance between two adjacent locking grooves in the same locking group is d.

[0021] The wall of the adjustment cavity is provided with an inlet / outlet groove between two adjacent locking groups. The inlet / outlet groove extends vertically and is open at both ends. The distance between the inlet / outlet groove and the two adjacent locking grooves is d. The adjustment part can move between the inlet / outlet groove and the adjacent locking groove; or, the distance between two adjacent locking grooves of two adjacent locking groups is d.

[0022] In one embodiment, multiple adjusting parts are evenly spaced along the circumference of the adjusting ring, and each adjusting part corresponds to a locking group.

[0023] In one embodiment, the outer side wall of the lifting sleeve is provided with a guide protrusion, which is slidably inserted into the inlet / outlet groove;

[0024] And / or, the burner head is provided with an upper limit component, which abuts against the lifting sleeve when the adjusting part is in the inlet / outlet slot to move the lifting sleeve to the upper limit at the maximum height position, which is higher than the height position when the adjusting part is in the highest locking position.

[0025] In one embodiment, the upper limit component covers the open end of the adjustment cavity and is detachably connected to the furnace base. When the adjustment part is located in the inlet / outlet slot, the upper limit component abuts against the upper end of the guide protrusion.

[0026] In one embodiment, in the same locking group, the locking groove with the lowest locking position is the low-position locking groove. Apart from the low-position locking groove, the lower ends of two adjacent locking grooves are connected by a rotating guide groove with a lower opening. The upper side wall of the rotating guide groove is inclined to form a guide groove wall. The inclination angle and inclination direction of the guide groove wall are the same as those of the pushing inclined surface.

[0027] In one embodiment, the lower end of the lifting sleeve is provided with a pushing groove, and multiple pushing grooves are evenly spaced along the circumference of the lifting sleeve. One side wall of the pushing groove forms the actuating inclined surface, and the number of pushing grooves is a multiple of the number of the adjusting parts.

[0028] In one embodiment, the lower inner side of the lifting sleeve is provided with an avoidance ring groove, and the adjusting ring includes a main cylinder part that is rotatably sleeved on the outside of the central vent pipe. The adjusting part is provided on the outer side wall of the main cylinder part, and the upper end of the main cylinder part is inserted into the avoidance ring groove.

[0029] The second technical problem mentioned above is solved by the following technical solution:

[0030] A burner includes a central flame cap and a main combustion module spaced outside the central flame cap, and also includes a furnace head as described above. The central flame cap is installed at the upper end of the lifting sleeve, and the main combustion module is installed at the upper end of the furnace base. At least at a certain height position, the central flame cap is higher than the main combustion module.

[0031] Compared with the prior art, the burner of this utility model has the following advantages: by adopting the above-mentioned burner head, the collision between the burner and the pot during cooking can be reduced, the service life of the burner and the pot can be improved, and the burner can be adapted to the use of pots with different bottom shapes.

[0032] The third technical problem mentioned above is solved by the following technical solution:

[0033] A gas stove, including the burner as described above.

[0034] Compared with the prior art, the gas stove of this utility model has the following advantages: by adopting the above-mentioned burner, the collision between the burner and the pot during cooking can be reduced, the service life of the burner and the pot can be improved, and the burner can be adapted to the use of pots with different bottom shapes. Attached Figure Description

[0035] Figure 1 A schematic diagram showing the interaction between the burner and the frying pan when the lifting sleeve is at its maximum height, as provided in this embodiment of the utility model.

[0036] Figure 2 A schematic diagram showing the interaction between the burner and the arc-shaped bottom pot when the lifting sleeve is at its minimum height position, as provided in this embodiment of the utility model.

[0037] Figure 3 A schematic diagram of the structure of the burner head provided in an embodiment of this utility model;

[0038] Figure 4 A cross-sectional view of the furnace head when the lifting sleeve is at its maximum height, provided in an embodiment of this utility model;

[0039] Figure 5 for Figure 4 A magnified view of a section at point I;

[0040] Figure 6 A partial cross-sectional view of the furnace head when the lifting sleeve is at its minimum height is provided for an embodiment of this utility model;

[0041] Figure 7 A schematic diagram of the height adjustment component and the central vent pipe provided in this embodiment of the utility model;

[0042] Figure 8 for Figure 7 A magnified view of a section at point J;

[0043] Figure 9 This is a partial structural schematic diagram of the main body provided in an embodiment of the present utility model;

[0044] Figure 10 A cross-sectional view of the main body provided in an embodiment of this utility model;

[0045] Figure 11 for Figure 10 A magnified view of a section at point K;

[0046] Figure 12 This is a schematic diagram of the structure of the lifting sleeve provided in an embodiment of the present utility model;

[0047] Figure 13 This is a schematic diagram of the structure of the adjusting ring provided in an embodiment of the present invention.

[0048] Label Explanation:

[0049] 100. Burner head; 200. Center burner cap; 300. Main combustion module; 400. Ignition needle; 500. Temperature sensor; 600. Frying pan; 700. Curved bottom pan;

[0050] 1. Furnace base; 11. Central vent pipe; 111. Central vent channel; 12. Main body; 121. Injector pipe; 1211. Central injection channel; 122. Top plate; 123. Boss; 124. Mounting hole; 125. Adjustment cavity; 126. Locking groove; 126a. High-position locking groove; 126b. Low-position locking groove; 1261. Inclined groove wall; 127. Inlet / outlet groove; 128. Rotating guide groove; 1281. Guide groove wall;

[0051] 2. Height adjustment mechanism; 21. Lifting sleeve; 211. Lifting cylinder body; 212. Guide protrusion; 213. Tooth; 214. Pushing groove; 2141. Actuating inclined surface; 215. Avoidance ring groove; 22. Adjusting ring; 221. Main cylinder; 2211. Upper cylinder; 2212. Lower cylinder; 222. Adjusting part; 2221. Pushing inclined surface; 23. Elastic element;

[0052] 3. Upper limit component; 31. Limiting plate; 32. Protruding ring. Detailed Implementation

[0053] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0054] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0055] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0056] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0057] This embodiment provides a burner that can be applied to gas stoves to improve the burner's performance and enhance the cooking experience of the gas stove.

[0058] like Figures 1 to 3 As shown, in this embodiment, the burner includes a burner head 100, a central flame cap 200, and a main combustion module 300. The burner head 100 has a central gas passage and a main gas passage; the central flame cap 200 is installed at the upper end of the burner head 100 and has a central flame hole; the main combustion module 300 is installed at the upper end of the burner head 100 and coaxially spaced outside the central flame cap 200, and has a main flame hole. The central gas passage supplies gas to the central flame hole of the central flame cap 200, and the main gas passage supplies gas to the main flame hole of the main combustion module 300.

[0059] In this embodiment, the burner head 100 includes a burner base 1 and a height adjustment mechanism 2. The burner base 1 has a central ejector channel 1211 and a vertically arranged central vent pipe 11. The outlet end of the central ejector channel 1211 is connected to the lower end of the central vent pipe 11, so that the inner cavities of the central ejector channel 1211 and the central vent pipe 11 together form a central gas passage. The burner base 1 also has a main gas passage. The inner cavity of the central vent pipe 11 forms a central vent channel 111.

[0060] The height adjustment mechanism 2 includes a lifting sleeve 21 and an adjustment unit. The lifting sleeve 21 is slidably sleeved on the outside of the central vent pipe 11 and its upper end is higher than the central vent pipe 11. The upper end of the lifting sleeve 21 is used to install the central flame cap 200. The adjustment unit cooperates with the lower part of the lifting sleeve 21 so that the lifting sleeve 21 can switch sequentially between multiple height positions. The lifting sleeve 21 can exit a height position when pressed and switch and limit itself to another adjacent height position after being released.

[0061] The burner head 100 provided in this embodiment, by setting an adjustment unit and a lifting sleeve 21, allows the lifting sleeve 21 to be switched to one of multiple height positions during pressing and releasing operations via the adjustment unit. Thus, by pressing and releasing the lifting sleeve 21, the height of the upper end of the lifting sleeve 21 can be adjusted, thereby adjusting the height position of the central burner cap 200 installed on the upper end of the lifting sleeve 21. This allows the height position of the central burner cap 200 to meet the needs of different types of cookware, improving the cooking experience. Simultaneously, because the lifting sleeve 21 can… After being adjusted to a certain height position, the lifting sleeve 21 is moved to the upper limit of that height position by the adjustment unit, thereby ensuring that the lifting sleeve 21 is stably set at that height position and avoiding frequent upward reset of the lifting sleeve 21, which could cause collisions with the cookware. Furthermore, this design also allows for a design gap between the upper end of the center burner cap 200 and the bottom of different cookware through the design of the height position of the lifting sleeve 21. This ensures heating of cookware with different bottom shapes while preventing the cookware from bumping into the center burner cap 200 during cooking, thus extending the service life of the center burner cap 200 and the cookware.

[0062] The lifting sleeve 21 has at least a maximum height position and a minimum height position. In one embodiment, when the lifting sleeve 21 is at its maximum height position, the central flame cap 200 is higher than the main combustion module 300, and the distance between the upper end of the central flame cap 200 and the upper end of the main combustion module 300 in the height direction is d1. The burner is suitable for use with a flat-bottomed pan 600 to reduce the distance between the central flame cap 200 and the bottom of the flat-bottomed pan 600, ensuring that the flame at the central flame cap 200 can be close to the main combustion module 300. When the lifting sleeve 21 is at its minimum height position, the upper end of the central flame cap 200 is higher than the main combustion module 300, and the distance between the upper end of the central flame cap 200 and the upper end of the main combustion module 300 in the height direction is d2, where d2 < d1. The burner is suitable for use with a curved-bottomed pan 700 to avoid collision between the curved-bottomed pan 700 and the central flame cap 200.

[0063] In other embodiments, when the lifting sleeve 21 is at its maximum height, the upper end of the center burner cap 200 is higher than the upper end of the main combustion module 300, while when the lifting sleeve 21 is at its minimum height, the upper end of the center burner cap 200 may be lower than or level with the upper end of the main combustion module 300.

[0064] In one embodiment, the furnace base 1 includes a main body 12, which is separately disposed from the central vent pipe 11. The main body 12 is provided with a central ejector channel 1211 and a main gas passage. The lower end of the central vent pipe 11 is sealed and inserted into the main body 12 and communicates with the gas outlet end of the central ejector channel 1211. By separating the main body 12 and the central vent pipe 11, the processing difficulty of the main body 12 can be reduced, and the replacement of the central vent pipe 11 can be facilitated, preventing damage to the central vent pipe 11 due to wear. Specifically, the main body 12 is provided with multiple ejector tubes 121, one of which is a central ejector tube, and the inner cavity of the central ejector tube forms the central ejector channel 1211.

[0065] The upper end of the main base 12 has a horizontally arranged top plate 122. Both the central gas passage and the main gas passage pass through the upper end of the top plate 122, which facilitates the installation of the main burner 300. An ignition needle 400 and a temperature sensor 500 are installed on the top plate 122. It is worth noting that the mating structure between the main base 12 and the main combustion module 300, the ignition needle 400, and the temperature sensor 500 can all be implemented using existing technology. This is not the focus of this invention and will not be elaborated upon here.

[0066] like Figure 3 , Figure 4 and Figure 10 As shown, to facilitate the installation of the central vent pipe 11, a vertically oriented mounting hole 124 is provided on the main body 12. The lower end of the mounting hole 124 is connected to the air outlet end of the central ejector channel 1211, and the lower end of the central vent pipe 11 is inserted into the mounting hole 124. The lower end of the central vent pipe 11 can be threaded into the wall of the mounting hole 124, and the gap can be sealed by a sealing ring placed between them. Alternatively, the central vent pipe 11 and the mounting hole 124 can also be interference-fitted, as long as the lower end of the central vent pipe 11 is securely inserted into the mounting hole 124 and the connection between the central vent pipe 11 and the main body 12 is sealed.

[0067] To improve the lifting reliability of the lifting sleeve 21, in one embodiment, the furnace base 1 has an adjustment cavity 125 surrounding the central vent pipe 11. The lower end of the lifting sleeve 21 is slidably disposed within the adjustment cavity 125. An adjustment unit is sleeved on the outside of the central vent pipe 11 and housed within the adjustment cavity 125, with the adjustment unit located between the bottom of the adjustment cavity 125 and the lower end of the lifting sleeve 21. By providing the adjustment cavity 125, the sliding guidance of the lifting sleeve 21 is facilitated, and the adjustment unit can be concealed within the furnace base 1, thereby reducing the probability of damage to the adjustment unit and improving the safety and reliability of the furnace head 100.

[0068] like Figures 4 to 13As shown, the cavity wall of the regulating cavity 125 is provided with a locking assembly, which includes multiple locking positions spaced apart circumferentially along the regulating cavity 125. The heights of all locking positions in the same locking assembly are different. The regulating unit includes an regulating ring 22 and an elastic element 23. The regulating ring 22 is rotatably sleeved on the outside of the central vent pipe 11 and has an regulating part 222 that cooperates with the locking position. The lower end of the lifting sleeve 21 presses against the regulating ring 22, and the elastic element 23 applies an upward elastic force to the regulating ring 22. The downward movement of the lifting sleeve 21 pushes the regulating ring 22 to move downward and rotate circumferentially along the central vent pipe 11, so that the regulating part 222 disengages from a locking position. The lifting sleeve 21 and the regulating ring 22 can move upward under the action of the elastic element 23, while continuing to rotate circumferentially, so that the regulating part 222 moves and locks in an adjacent locking position.

[0069] By providing locking groups with different height locking positions on the cavity wall of the adjusting cavity 125, and rotating the adjusting ring 22 around the outside of the central vent pipe 11, it is convenient to switch the adjusting part 222 between adjacent locking positions through the lifting and rotating movement of the adjusting ring 22. This ensures the convenience of switching the height position of the lifting sleeve 21, while simplifying the structure of the adjusting unit and reducing its cost. At the same time, by providing a reset component, the lifting sleeve 21 can automatically move upward after being released.

[0070] In one embodiment, the locking assembly includes a plurality of locking grooves 126 spaced circumferentially along the adjustment cavity 125. The locking grooves 126 extend vertically and the upper end of each locking groove 126 forms a locking position. The lower ends of all locking grooves 126 are in communication with the adjustment cavity 125. The adjustment part 222 can enter and exit any locking groove 126.

[0071] This configuration allows the downward movement of the lifting sleeve 21 to push the adjusting part 222 downward out of a locking groove 126 and rotate to move below an adjacent locking groove 126. The elastic member 23 applies an upward elastic force to the adjusting ring 22, causing the adjusting part 222, located below the locking groove 126, to move upward to the upper end of the locking groove 126 and lock. This configuration facilitates controlling the number of height positions that the lifting sleeve 21 can reach by using the number of locking grooves 126 of different heights. Furthermore, it allows for setting the specific height position of the lifting sleeve 21 by designing the upper height of each locking groove 126, thus improving the flexibility and convenience of setting the height position and the number of height positions of the lifting sleeve 21.

[0072] The lifting sleeve 21 moves downward to push the adjusting ring 22 to rotate in the direction of the set rotation direction. In one embodiment, in the same locking group, the height of the upper end of the locking groove 126 gradually decreases along the set rotation direction, so as to facilitate the user to better control the height adjustment process.

[0073] In one embodiment, the lower end of the lifting sleeve 21 is provided with an actuating inclined surface 2141, which is set at an angle to the axial direction of the lifting sleeve 21. The adjusting ring 22 is provided with a pushing inclined surface 2221, which is in contact with the actuating inclined surface 2141. This arrangement ensures that when the lifting sleeve 21 moves downward, the actuating inclined surface 2141 pushes the adjusting part 222 downward through the pushing inclined surface 2221, and the force exerted by the actuating inclined surface 2141 on the pushing inclined surface 2221 has a component force along the circumference of the lifting sleeve 21. When the adjusting part 222 is located within the locking groove 126, the adjusting part 222 can only move vertically under the limiting effect of the locking groove 126 until the adjusting part 222 exits the locking groove 126. The rear adjustment section 222 moves downward and rotates circumferentially around the central vent pipe 11 under the combined action of the actuating inclined surface 2141 and the pushing inclined surface 2221 until the adjustment section 222 rotates directly below the adjacent locking groove 126. At this time, the lifting sleeve 21 is released, and the adjusting ring 22 and the lifting sleeve 21 move upward under the elastic force of the elastic member 23, so that the adjustment section 222 is inserted upward into the locking groove 126 and abuts against the upper end wall of the locking groove 126 to lock. By setting the cooperative structure of the actuating inclined surface 2141 and the pushing inclined surface 2221, the movement of the adjustment section 222 between the two locking grooves 126 can be realized with a relatively simple structure, improving the ease of setting the adjustment unit.

[0074] Furthermore, multiple actuating inclined surfaces 2141 are evenly spaced along the circumference of the lifting sleeve 21, and the number of actuating inclined surfaces 2141 is a multiple of the number of adjusting parts 222, so that each adjusting part 222 has a corresponding actuating inclined surface 2141 to cooperate with it.

[0075] To improve the ease of setting the adjusting ring 22, the upper end of the adjusting part 222 has a pushing inclined surface 2221. The thickness of the adjusting part 222 in the radial direction of the adjusting ring 22 is greater than the depth of the locking groove 126. This allows the side of the adjusting part 222 away from the center of the adjusting ring 22 to slide into the locking groove 126, while the remaining part is exposed in the locking groove 126 to cooperate with the actuating inclined surface 2141. This allows the pressure applied by the lifting sleeve 21 to the adjusting ring 22 to act directly on the adjusting part 222, thereby facilitating the sliding of the adjusting part 222 along the locking groove 126 and improving the stability and reliability of the adjusting ring 22's operation. In other embodiments, the pushing inclined surface 2221 can be provided at other positions on the adjusting ring 22 to push the adjusting ring 22 to slide downward.

[0076] In one embodiment, the upper end wall of the locking groove 126 is inclined relative to the axial direction of the adjusting cavity 125 to form an inclined groove wall 1261. The inclination angle of the inclined groove wall 1261 is the same as the inclination angle of the pushing inclined surface 2221. When the adjusting part 222 is confined in the locking groove 126, the pushing inclined surface 2221 fits against the inclined groove wall 1261 to increase the contact area between the adjusting part 222 and the upper end wall of the locking groove 126, thereby ensuring the reliability of the limiting position of the adjusting part 222 in the locking groove 126. At the same time, it can avoid the upper end wall from making line contact or point contact with the pushing inclined surface 2221, which would cause wear on the pushing inclined surface 2221.

[0077] The lower end of the lifting sleeve 21 is provided with a pushing groove 214. One side wall of the pushing groove 214 forms an actuating inclined surface 2141. Multiple pushing grooves 214 are spaced apart along the circumference of the lifting sleeve 21. The upper end of the adjusting part 222 is slidably inserted into the pushing groove 214, and the actuating inclined surface 2141 abuts against the pushing inclined surface 2221. When the adjusting part 222 slides relative to the lifting sleeve 21 until its top end abuts against the upper wall of the pushing groove 214, the lifting sleeve 21 and the adjusting ring 22 are relatively fixed. This arrangement can limit the stroke of the adjusting part 222 in the circumferential rotation when the lifting sleeve 21 is pressed down, ensuring that the angle of the actuated rotation of the adjusting ring 22 is fixed when the lifting sleeve 21 is pressed once, and the adjusting part 222 can reliably move from one locking groove 126 to directly below another locking groove 126.

[0078] The sliding limit of the adjusting part 222 relative to the lifting sleeve 21 is achieved by setting the pushing groove 214. The structure is simple and easy to process and form the lifting sleeve 21. In other embodiments, other limiting structures can also be set to limit the maximum relative stroke of the adjusting ring 22 relative to the lifting sleeve 21. For example, a separate limiting groove and guide protrusion 212 can be set to achieve the limiting of relative sliding.

[0079] In one embodiment, the pushing groove 214 has an inverted V-shaped structure, and one side wall of the pushing groove 214 forms an actuating inclined surface 2141. This type of pushing groove 214 has a simple structure and is easy to process and form. In other embodiments, the pushing groove 214 can also adopt other shapes, such as a trapezoidal structure that is smaller at the top and larger at the bottom.

[0080] In one embodiment, multiple locking groups are arranged at intervals along the circumference of the lifting sleeve 21. The locking grooves 126 in each locking group are arranged in the same direction. The circumferential distance between two adjacent locking grooves 126 in the same locking group is d. The cavity wall of the adjusting cavity 125 is provided with an inlet / outlet groove 127 between two adjacent locking groups. The inlet / outlet groove 127 extends vertically and is open at both the upper and lower ends. The distance between the inlet / outlet groove 127 and the two adjacent locking grooves 126 is d. The adjusting part 222 can move between the inlet / outlet groove 127 and the adjacent locking grooves 126.

[0081] By setting multiple locking groups, the distance between two adjacent locking grooves 126 and the width of a single locking groove 126 can be reduced while keeping the outer diameter of the adjusting cavity 125 unchanged. This helps to reduce the size of the adjusting part 222 and improve the rationality of the structural design of the adjusting ring 22. By setting the inlet and outlet groove 127, the adjusting part 222 is inserted through the upper end of the inlet and outlet groove 127 during the assembly of the adjusting ring 22, thereby inserting the adjusting ring 22 into the adjusting cavity 125. Then, the lifting sleeve 21 is inserted into the adjusting cavity 125. This effectively reduces the difficulty of disassembling and assembling the height adjusting mechanism 2 and improves the stability and ease of setting the height adjusting mechanism 2.

[0082] The adjusting ring 22 is provided with multiple adjusting parts 222 at intervals along the circumference, and the number of adjusting parts 222 is the same as the number of sets of locking grooves 126. All adjusting parts 222 are located in the locking grooves 126 at the same height. By providing multiple sets of locking grooves 126 and multiple adjusting parts 222, the stress stability and reliability of the adjusting ring 22 in the circumferential direction can be improved, thereby improving the smoothness of the lifting operation of the lifting sleeve 21 and the adjusting ring 22, and reducing the problem of height inability to be adjusted due to the adjusting ring 22 getting stuck.

[0083] Multiple pushing grooves 214 are evenly spaced along the circumference of the lifting sleeve 21. The number of pushing grooves 214 is a multiple of the number of adjusting parts 222. This arrangement reduces the difficulty of aligning the lifting sleeve 21 and the adjusting ring 22 during assembly, improving assembly convenience and flexibility. Simultaneously, when the actuating inclined surface 2141 is partially worn, it facilitates the replacement of the pushing inclined surface 2221 that mates with the adjusting part 222, thereby better ensuring the reliability of the height adjustment mechanism 2. In other embodiments, the number of pushing grooves 214 may be the same as the number of adjusting parts 222.

[0084] In one embodiment, the adjacent walls of two adjacent pushing grooves 214 are connected at an included angle, so that the structure between two adjacent pushing grooves 214 forms a tooth 213. That is, the lower end of the lifting sleeve 21 is provided with a plurality of teeth 213 evenly spaced along the circumference, and the aforementioned pushing groove 214 is formed between two adjacent teeth 213. This arrangement can further reduce the number of mating positions between the lifting sleeve 21 and the adjusting part 222, and reduce the processing difficulty of the lifting sleeve 21.

[0085] In one embodiment, the burner head 100 is provided with an upper limit component 3. When the adjusting part 222 is in the inlet / outlet slot 127, the upper limit component 3 abuts against the lifting sleeve 21 to move the lifting sleeve 21 to its maximum height position, which is higher than the height position when the adjusting part 222 is in the highest locking position. This increases the number of adjustable height positions of the lifting sleeve 21 while reducing the number of locking slots 126 in each locking group, thereby reducing the outer diameter requirements of the lifting sleeve 21 and the adjusting ring 22.

[0086] In one embodiment, the number of locking slots 126 in each locking group is 2 to 6, specifically, but not limited to, 2, 3, 4, 5, and 6. For ease of description, the highest locking slot 126 in the same locking group is referred to as the high-position locking slot 126a, the lowest locking slot 126 is referred to as the low-position locking slot 126b, and the remaining locking slots 126 are referred to as the intermediate locking slots 126. When the adjusting part 222 is locked in the low-position locking slot 126b, the lifting sleeve 21 is at its minimum height position.

[0087] It is worth noting that the number of locking slots 126 in the locking assembly can be set according to requirements, and this utility model does not limit this.

[0088] In one embodiment, in the same locking group, except for the lower locking groove 126b, the lower ends of two adjacent locking grooves 126 are connected by a rotating guide groove 128 with a lower opening. The upper wall of the rotating guide groove 128 is inclined to form a guide groove wall 1281, and the inclination angle and inclination direction of the guide groove wall 1281 are the same as those of the pushing inclined surface 2221. By providing the rotating guide groove 128, it is easier to guide the adjustment part 222 from the lower end of one locking groove 126 to the lower end of another locking groove 126, thereby improving the reliability and smoothness of the movement of the adjustment part 222. Specifically, after the adjusting part 222 exits a locking groove 126 and the lifting sleeve 21 is released, the adjusting ring 22 moves upward under the action of the elastic member 23, so that the pushing inclined surface 2221 of the adjusting part 222 fits against the guide groove wall 1281. Then, through the contact between the two, the adjusting ring 22 is guided to continue rotating relative to the lifting sleeve 21 until the adjusting part 222 moves to the lower end of the adjacent locking groove 126, thereby improving the smoothness of the rotation of the adjusting ring 22.

[0089] Furthermore, when the lifting sleeve 21 is pressed, the push adjustment ring 22 rotates relative to the furnace base 1 in the set rotation direction, and the lower end of the inlet / outlet groove 127 is connected to the locking groove 126 on the front side along the set rotation direction through the rotating guide groove 128.

[0090] In one embodiment, a guide protrusion 212 is provided on the outer side wall of the lifting sleeve 21, and the guide protrusion 212 is slidably inserted into the inlet / outlet groove 127. This allows the lifting sleeve 21 to be guided vertically through the cooperation of the guide protrusion 212 and the limiting groove, improving the sliding stability and reliability of the lifting sleeve 21 and limiting the rotation of the lifting sleeve 21 relative to the furnace base 1 during the downward pressing process. Simultaneously, because the upper end of the inlet / outlet groove 127 is open, the guide protrusion 212 can be inserted into the inlet / outlet groove 127 through the upper opening, facilitating the installation of the lifting sleeve 21 on the furnace base 1 and improving the ease of assembly and disassembly of the lifting sleeve 21.

[0091] Specifically, the lifting sleeve 21 includes a lifting cylinder body 211 slidably sleeved on the outside of the central vent pipe 11, and a guide protrusion 212 is provided on the outer side wall of the lifting cylinder body 211. Furthermore, the guide protrusion 212 is provided in a one-to-one correspondence with the inlet and outlet grooves 127, thereby improving the stress stability of the lifting sleeve 21 and further enhancing the lifting reliability of the lifting sleeve 21.

[0092] To improve the ease of setting the upper limit position component 3, in one embodiment, the upper limit position component 3 is covered on the open end of the adjustment cavity 125 and detachably connected to the furnace base 1. When the adjustment part 222 is located in the inlet / outlet groove 127, the upper limit position component 3 abuts against the upper end of the guide protrusion 212. By abutting against the guide protrusion 212, the upper limit position component 3 achieves the matching limit of the lifting sleeve 21, which simplifies the structure of the lifting sleeve 21 and reduces costs. At the same time, covering the open end of the adjustment cavity 125 with the upper limit position component 3 also facilitates the disassembly and assembly of the upper limit position component 3, reducing the difficulty of disassembling and assembling the furnace head 100.

[0093] In one embodiment, the upper limit component 3 includes a limiting plate portion 31, which has a through hole. The periphery of the through hole is folded upward to form a protruding ring portion 32. The lifting sleeve 21 passes through the through hole, and the protruding ring portion 32 and the lifting sleeve 21 are in clearance fit. This arrangement can ensure that the guide protrusion 212 can abut against the upper limit component 3 while avoiding the guide protrusion 212 having a large protrusion size.

[0094] The top of the furnace base 1 has a protruding boss 123 that surrounds the lifting sleeve 21. The boss 123 reduces the overall size of the furnace base 1 while extending the length of the adjusting cavity 125, thereby improving the ease of setting the height adjustment mechanism 2. The upper limit component 3 is detachably installed on the top of the boss 123. Preferably, the outer contour of the upper limit component 3 is consistent with the outer contour of the boss 123 to improve the overall structural aesthetics of the furnace head 100.

[0095] The adjusting ring 22 includes a main cylinder portion 221 sleeved on the outside of the central vent pipe 11, and an adjusting portion 222 protruding from the outer wall of the main cylinder portion 221. In one embodiment, an avoidance ring groove 215 is provided on the inner side of the lower end of the lifting sleeve 21, and the upper end of the main cylinder portion 221 is slidably inserted into the avoidance ring groove 215. This reduces the distance between the inner wall of the lifting sleeve 21 and the outer wall of the central vent pipe 11, while avoiding interference between the lower end of the lifting sleeve 21 and the adjusting ring 22, and also ensures that the pushing inclined surface 2221 directly acts on the adjusting portion 222.

[0096] In another embodiment, the inner diameter of the lifting sleeve 21 may be larger than the upper outer diameter of the main sleeve 221, so that the upper end of the main sleeve 221 is inserted into the inner side of the lifting sleeve 21. In another embodiment, the lower end of the lifting sleeve 21 may directly abut against the upper end face of the main sleeve 221.

[0097] The main cylinder 221 includes an upper cylinder 2211 and a lower cylinder 2212 coaxially connected. The adjusting part 222 extends from the outer side wall of the upper cylinder 2211 to the lower end of the lower cylinder 2212. The outer diameter of the upper cylinder 2211 is smaller than the outer diameter of the lower cylinder 2212. An upward limiting step surface is formed between the upper cylinder 2211 and the lower cylinder 2212.

[0098] This embodiment also provides a gas stove, including the burner described above. By using the burner head described above, the collision between the burner and the cookware during cooking can be reduced, the service life of the burner and the cookware can be improved, and the burner can be adapted to cookware with different bottom shapes.

[0099] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0100] The specific embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A stove head, characterized in that, include: Furnace base (1), the furnace base (1) has a central ejector channel (1211) and a vertically arranged central vent pipe (11), the lower end of the central vent pipe (11) is connected to the central ejector channel (1211); The height adjustment mechanism (2) includes a lifting sleeve (21) and an adjustment unit. The lifting sleeve (21) is slidably sleeved on the outside of the central vent pipe (11) and its upper end is higher than the central vent pipe (11). The upper end of the lifting sleeve (21) is used to install the central flame cap (200). The adjustment unit cooperates with the lower part of the lifting sleeve (21) so that the lifting sleeve (21) can switch sequentially between multiple height positions. The lifting sleeve (21) can exit a height position when pressed and switch and be limited to another adjacent height position after being released.

2. The burner head according to claim 1, characterized in that, The furnace base (1) has an adjustment cavity (125) arranged around the central vent pipe (11). The adjustment cavity (125) extends through the upper end of the furnace base (1). The lower end of the lifting sleeve (21) is slidably inserted into the adjustment cavity (125), and the adjustment unit is located between the bottom of the adjustment cavity (125) and the lower end of the lifting sleeve (21).

3. The burner head according to claim 2, characterized in that, The wall of the adjustment cavity (125) is provided with a locking group, which includes a plurality of locking positions spaced apart circumferentially along the adjustment cavity (125), and all the locking positions in the same locking group have different heights. The adjustment unit includes an adjustment ring (22) and an elastic element (23). The adjustment ring (22) is rotatably sleeved on the outside of the central vent pipe (11) and has an adjustment part (222) that cooperates with the locking position. The lower end of the lifting sleeve (21) presses against the adjustment ring (22), and the elastic element (23) applies an upward elastic force to the adjustment ring (22). The downward movement of the lifting sleeve (21) pushes the adjusting ring (22) to move downward and rotate circumferentially along the central vent pipe (11) so that the adjusting part (222) is disengaged from a locking position. The lifting sleeve (21) and the adjusting ring (22) can move upward under the action of the elastic member (23) so that the adjusting part (222) moves and locks in the adjacent locking position.

4. The burner head according to claim 3, characterized in that, The locking assembly includes a plurality of locking grooves (126) spaced circumferentially along the adjustment cavity (125). The locking grooves (126) extend vertically and the upper end of each locking groove (126) forms the locking position. The lower ends of all the locking grooves (126) are connected to the adjustment cavity (125). The adjustment part (222) can enter and exit any of the locking grooves (126). And / or, the lower end of the lifting sleeve (21) is provided with an actuating inclined surface (2141), the actuating inclined surface (2141) is set at an angle to the axial direction of the lifting sleeve (21), and the adjusting ring (22) is provided with a pushing inclined surface (2221), the pushing inclined surface (2221) is in contact with the actuating inclined surface (2141).

5. The burner head according to claim 4, characterized in that, The adjusting part (222) is slidably inserted into the locking groove (126) on the side away from the center line of the adjusting ring (22), and the upper end of the adjusting part (222) has the pushing inclined surface (2221).

6. The burner head according to claim 4, characterized in that, The locking group is evenly spaced along the circumference of the lifting sleeve (21), and the circumferential distance between two adjacent locking grooves (126) in the same locking group is d. The cavity wall of the adjustment cavity (125) is provided with an inlet / outlet groove (127) between two adjacent locking groups. The inlet / outlet groove (127) extends vertically and is open at both ends. The distance between the inlet / outlet groove (127) and the two adjacent locking grooves (126) is d. The adjustment part (222) can move between the inlet / outlet groove (127) and the adjacent locking grooves (126); or, the distance between the two adjacent locking grooves (126) of the two adjacent locking groups is d.

7. The burner head according to claim 6, characterized in that, The adjustment part (222) is evenly spaced along the circumference of the adjustment ring (22), and the adjustment part (222) is provided in a one-to-one correspondence with the locking group.

8. The burner head according to claim 6, characterized in that, The outer side wall of the lifting sleeve (21) is provided with a guide protrusion (212), which is slidably inserted into the inlet / outlet groove (127); And / or, the burner head is provided with an upper limit component (3), when the adjustment part (222) is located in the inlet / outlet slot (127), the upper limit component (3) abuts against the lifting sleeve (21) to move the lifting sleeve (21) to the upper limit at the maximum height position, the maximum height position being higher than the height position when the adjustment part (222) is in the highest locking position.

9. The burner head according to claim 8, characterized in that, The upper limit component (3) covers the open end of the adjustment cavity (125) and is detachably connected to the furnace base (1). When the adjustment part (222) is located in the inlet / outlet groove (127), the upper limit component (3) abuts against the upper end of the guide protrusion (212).

10. The burner head according to claim 4, characterized in that, In the same locking group, the locking groove (126) with the lowest locking position is the low-position locking groove (126b). Except for the low-position locking groove (126b), the lower ends of two adjacent locking grooves (126) are connected through the lower open rotating guide groove (128). The upper side groove wall of the rotating guide groove (128) is inclined to form a guide groove wall (1281). The inclination angle and inclination direction of the guide groove wall (1281) are the same as those of the pushing inclined surface (2221).

11. The burner head according to any one of claims 4-10, characterized in that, The lower end of the lifting sleeve (21) is provided with a pushing groove (214). Multiple pushing grooves (214) are evenly spaced along the circumference of the lifting sleeve (21). One side wall of the pushing groove (214) forms the actuating inclined surface (2141). The number of pushing grooves (214) is a multiple of the number of adjusting parts (222).

12. The burner head according to any one of claims 4-10, characterized in that, The lower end of the lifting sleeve (21) is provided with a clearance ring groove (215). The adjusting ring (22) includes a main cylinder part (221) that is rotatably sleeved on the outside of the central vent pipe (11). The adjusting part (222) is provided on the outer side wall of the main cylinder part (221). The upper end of the main cylinder part (221) is inserted into the clearance ring groove (215).

13. A burner comprising a central burner cap (200) and a main combustion module (300) spaced outside the central burner cap (200), characterized in that, It also includes a burner head as described in any one of claims 1-12, wherein the center burner cap (200) is mounted on the upper end of the lifting sleeve (21), and the main combustion module (300) is mounted on the upper end of the furnace base (1); at least at a portion of the height position, the center burner cap (200) is higher than the main combustion module (300).

14. A gas stove, characterized in that, Including the burner as described in claim 13.

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