Gas stove

Abstract

The utility model relates to the technical field of kitchen equipment, and provides a gas stove which comprises a shell, a burner, an injection pipe, a nozzle assembly, a lead screw and a worm gear assembly. A containing space is formed in the shell, a combustion area of the burner is located outside the containing space, the injection pipe is connected with the burner, the nozzle assembly is arranged in the containing space, the lead screw is connected with the nozzle assembly, the worm gear assembly is in transmission connection with the lead screw so as to drive the lead screw to move, and the lead screw drives the nozzle assembly to move between a first position and a second position. When the nozzle assembly is located at the first position, the nozzle assembly is connected and communicated with the injection pipe so as to provide fuel gas for the furnace end; when the nozzle assembly is located at the second position, the nozzle assembly is located in the containing space. According to the gas stove disclosed by the embodiment of the invention, when a cook finishes cooking and needs to clean the table top of the gas stove, the nozzle assembly can be moved to the second position, so that the cook can conveniently clean the table top.

Description

Technical Field

[0001] The present application relates to the technical field of kitchen appliances, and in particular to a gas stove. Background Art

[0002] In related art, a gas stove's nozzle assembly is connected to a gas supply pipe, allowing the nozzle assembly to supply gas to the stove's ejector tube, which in turn supplies gas to the burner, ensuring proper combustion. Typically, a portion of the gas supply pipe is placed on the stove's countertop. However, this arrangement creates inconvenience for the cook when cleaning the stove, obstructing cleaning and even creating blind spots. Furthermore, since the ejector tube remains connected to the nozzle assembly, if the cook accidentally triggers the ignition switch during cleaning, it poses a significant safety hazard and even risks gas leaks. Summary of the Invention

[0003] The present application aims to solve at least one of the technical problems in the related art. To this end, the present application proposes a gas stove that is convenient for users to clean the gas stove countertop.

[0004] The gas stove according to an embodiment of the present application includes:

[0005] a housing, wherein the housing has an accommodating space;

[0006] A burner head, the burner head is embedded in the shell, and the combustion area of ​​the burner head is located outside the accommodating space;

[0007] An ejector pipe connected to the furnace head;

[0008] a nozzle assembly, the nozzle assembly being disposed in the accommodating space;

[0009] a lead screw connected to the nozzle assembly;

[0010] a worm gear assembly, the worm gear assembly being in driving connection with the lead screw to drive the lead screw to move, and the lead screw drives the nozzle assembly to move between a first position and a second position;

[0011] When the nozzle assembly is located at the first position, the nozzle assembly is connected and communicated with the ejector pipe to provide gas to the burner; when the nozzle assembly is located at the second position, the nozzle assembly is located in the accommodating space.

[0012] According to an embodiment of the present application, a gas stove is provided with a nozzle assembly, a lead screw, and a worm gear assembly, wherein the lead screw is connected to the nozzle assembly, and the worm gear assembly is in transmission connection with the lead screw. The worm gear assembly can drive the lead screw to move, so that the lead screw can drive the nozzle assembly to move between a first position and a second position. Thus, when a cook needs to cook, the nozzle assembly can be moved to the first position, so that the nozzle assembly can supply gas to the burner of the gas stove, so that the burner can operate normally and heat the pot. When the cook finishes cooking and needs to clean the gas stove countertop, the nozzle assembly can be moved to the second position, making it easier for the cook to clean the countertop.

[0013] According to one embodiment of the present application, the worm gear assembly includes:

[0014] A worm wheel, the worm wheel is externally mounted on the lead screw, and the worm wheel and the lead screw are in driving cooperation;

[0015] A worm, the worm being drivingly connected to the worm wheel;

[0016] A driving member is connected to the worm gear, and the driving member is used to drive the worm to rotate, and the worm gear drives the lead screw to rise and fall.

[0017] According to one embodiment of the present application, the worm gear comprises:

[0018] A main body portion, the main body portion extending in a straight line, the lead screw being inserted into the main body portion, and the lead screw being in transmission cooperation with the main body portion;

[0019] A protruding portion is provided on the outer periphery of the main body, and the protruding portion is matched with the worm gear.

[0020] According to one embodiment of the present application, when the nozzle assembly is located at the first position, the mating length of the lead screw and the main body is L1, the length of the lead screw is L2, and the ratio of L1 to L2 is 0.3-0.5.

[0021] According to one embodiment of the present application, when the nozzle assembly is located at the second position, the mating length of the lead screw and the main body is L1, the length of the lead screw is L2, and the ratio of L1 to L2 is 0.6-1.

[0022] According to one embodiment of the present application, the nozzle assembly includes:

[0023] disc body;

[0024] A plurality of tubes are provided through the disc body, one end of each tube is a nozzle, and the nozzle is suitable for being connected to and communicated with the nozzle of the ejector tube.

[0025] According to one embodiment of the present application, it further includes at least one guide rod, each of the guide rods is disposed through the disc body, and the disc body slides along the guide rod.

[0026] According to one embodiment of the present application, the disk body is provided with at least one guide hole, each of the guide holes is provided with a graphite copper sleeve, and the graphite copper sleeve is sleeved on the corresponding guide rod.

[0027] According to one embodiment of the present application, a disc hole is opened on the shell, and when the nozzle assembly is located at the first position, the disc body is located in the disc hole.

[0028] According to one embodiment of the present application, a cover plate is further included, which is adapted to the shape of the disc hole. When the nozzle assembly is located at the second position, the cover plate covers the disc hole.

[0029] According to one embodiment of the present application, a fixing seat is further included, wherein the fixing seat is connected to the housing, and the fixing seat is connected to the worm gear assembly to fix the worm gear assembly to the housing.

[0030] According to one embodiment of the present application, the lead screw is a four-wire lead screw.

[0031] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 is a schematic diagram of the structure of the gas stove provided by the present application, wherein the nozzle assembly is in a first position;

[0034] Figure 2 is a partial structural diagram of the gas stove provided by the present application, wherein the nozzle assembly is in a first position;

[0035] Figure 3 yes Figure 2 A local enlarged view of point A;

[0036] Figure 4 is a top view of the gas stove structure provided by the present application, wherein the nozzle assembly is in a first position;

[0037] Figure 5 yes Figure 4 Cross-sectional view along AA direction;

[0038] Figure 6 yes Figure 5 A partial enlarged view of point B;

[0039] Figure 7 is another structural schematic diagram of the gas stove provided by the present application, wherein the nozzle assembly is in the second position;

[0040] Figure 8 is a top view of another structure of the gas stove provided by the present application, wherein the nozzle assembly is in the second position;

[0041] Figure 9 yes Figure 8 A cross-sectional view along the BB direction;

[0042] Figure 10 yes Figure 9 A partial enlarged view of point C.

[0043] Reference numerals:

[0044] 100, housing; 101, accommodating space; 102, disk hole;

[0045] 110, stove head;

[0046] 120, ejector tube;

[0047] 130. Nozzle assembly; 131. Plate; 132. Tube; 133. Nozzle;

[0048] 140, screw;

[0049] 150. Worm gear assembly; 151. Worm gear; 1511. Main body; 1512. Protrusion; 152. Worm; 153. Driving member;

[0050] 160. Guide rod; 170. Fixed seat; 171. Bearing; 172. First chamber; 173. Second chamber; 180. Cover plate. DETAILED DESCRIPTION

[0051] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0052] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0053] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0054] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0056] In related art, a gas stove's nozzle assembly is connected to a gas supply pipe, allowing the nozzle assembly to supply gas to the stove's ejector tube, which in turn supplies gas to the burner, ensuring proper combustion. Typically, a portion of the gas supply pipe is placed on the stove's countertop. However, this arrangement creates inconvenience for the cook when cleaning the stove, obstructing cleaning and even creating blind spots. Furthermore, since the ejector tube remains connected to the nozzle assembly, if the cook accidentally triggers the ignition switch during cleaning, it poses a significant safety hazard and even risks gas leaks.

[0057] The following is based on Figures 1 to 10 Introducing the gas stove provided by this application.

[0058] like Figures 1 to 3 As shown, the present application provides a gas stove, including a housing 100, a burner head 110, an ejector tube 120, a nozzle assembly 130, a lead screw 140 and a worm gear assembly 150. Specifically, as Figures 1 to 3 As shown, a housing 100 defines a housing space 101. A burner head 110 is embedded in the housing 100, with the combustion area of ​​the burner head 110 located outside the housing space 101. An ejector tube 120 is connected to the burner head 110. A nozzle assembly 130 is disposed within the housing space 101, and a lead screw 140 is connected to the nozzle assembly 130. A worm gear assembly 150 is in driving connection with the lead screw 140. The worm gear assembly 150 can drive the lead screw 140, which in turn can drive the nozzle assembly 130 between a first position and a second position.

[0059] When the nozzle assembly 130 is in the first position, it is connected to and communicates with the ejector tube 120. At this point, the nozzle assembly 130 can supply gas to the burner 110, allowing the burner 110 to function normally, heating the pot and allowing the cook to cook normally. When the nozzle assembly 130 is in the second position, the nozzle assembly 130 is disconnected from the ejector tube 120 and located within the accommodating space 101. In other words, the nozzle assembly 130 no longer supplies gas to the burner 110. At this point, the cook can easily clean the gas stove countertop after cooking without worrying about gas leaks, which improves the safety of the gas stove.

[0060] According to the gas stove of the embodiment of the present application, a nozzle assembly 130, a screw 140, and a worm gear assembly 150 are provided on the gas stove. The screw 140 is connected to the nozzle assembly 130, and the worm gear assembly 150 is in transmission connection with the screw 140. The worm gear assembly 150 can drive the screw 140 to move, so that the screw 140 can drive the nozzle assembly 130 to move between a first position and a second position. In this way, when the cook needs to cook, the nozzle assembly 130 can be moved to the first position, so that the nozzle assembly 130 can supply gas to the burner 110 of the gas stove, so that the burner 110 can operate normally and heat the pot. When the cook finishes cooking and needs to clean the gas stove countertop, the nozzle assembly 130 can be moved to the second position, making it easier for the cook to clean the countertop.

[0061] like Figure 2 As shown, in one embodiment of the present application, the worm gear assembly 150 includes a worm wheel 151, a worm 152, and a driving member 153. The worm wheel 151 is externally mounted on the lead screw 140 so that the worm wheel 151 can be driven in conjunction with the lead screw 140. The worm 152 is in driving connection with the worm wheel 151, and the driving member 153 is in driving connection with the worm wheel 151. The driving member 153 is used to drive the worm 152 to rotate, and the worm wheel 151 drives the lead screw 140 to move up and down.

[0062] It should be noted that, in this embodiment, the driving member 153 can be a stepper motor, and the working basis of the stepper motor is electromagnetic induction. The drive of the stepper motor mainly depends on the pulse signal generated by the power supply. When the pulse signal is sent to the driving circuit of the motor, the circuit will convert the pulse signal into the corresponding phase sequence current and introduce it into the coil of the stepper motor. The rotation of the stepper motor is carried out according to the step angle. Each time a pulse signal is received, the motor rotor will rotate a certain angle, and this angle is the step angle. The stepper motor generally adopts a brushless design, which reduces electrical or mechanical losses and improves the efficiency of the motor. Therefore, the stepper motor can convert the pulse electrical signal into precise mechanical displacement through the electromagnetic principle, thereby achieving the accuracy of the lifting position of the nozzle assembly 130.

[0063] When the nozzle assembly 130 needs to be moved to the first position, the stepper motor can be turned on, causing the stepper motor to drive the worm 152 to rotate, thereby causing the worm 152 to synchronously drive the worm wheel 151 to rotate, so that the worm wheel 151 can drive the lead screw 140 to rise, thereby moving the nozzle assembly 130 to the first position. In addition, since the power transmission between the worm wheel 151 and the worm 152 is through the worm 152 to drive the worm wheel 151, the design of the worm 152 often has a relatively small helix angle. The size of the helix angle can directly affect the propulsion effect of the worm 152 and the friction coefficient between it and the worm wheel 151. At a relatively small helix angle, the worm wheel 151 and the worm 152 have a self-locking function, and the nozzle assembly 130 can rise and fall under the drive of the stepper motor, thereby further improving the safety during the use of the gas stove.

[0064] like Figure 6 As shown, in one embodiment of the present application, the worm gear 151 includes a main body 1511 and a protrusion 1512. The main body 1511 extends in a straight line, and the lead screw 140 is inserted into the main body 1511, and the lead screw 140 and the main body 1511 are in transmission cooperation. The protrusion 1512 is provided on the outer periphery of the main body 1511, and the protrusion 1512 is in transmission cooperation with the worm 152. Thus, when the stepper motor drives the worm 152 to transmit, the worm 152 can drive the protrusion 1512 to transmit, so that the protrusion 1512 drives the main body 1511 to rotate, and then the lead screw 140 drives the nozzle assembly 130 to rise and fall on the gas stove top.

[0065] like Figure 6 As shown, in one embodiment of the present application, when the nozzle assembly 130 is in the first position, the length of the screw 140 and the main body 1511 is L1, the length of the screw 140 is L2, and the ratio of L1 to L2 is 0.3-0.5. This prevents the screw 140 from protruding too far from the main body 1511, which would cause the center of gravity of the screw 140 to be too high, resulting in instability of the screw 140, causing the nozzle assembly 130 to shake or even fall off, and affecting the cooking experience.

[0066] like Figure 10 As shown, in one embodiment of the present application, when the nozzle assembly 130 is in the second position, the length of the screw 140 and the main body 1511 is L1, the length of the screw 140 is L2, and the ratio of L1 to L2 is 0.6-1. In this way, the screw 140 and the main body 1511 can be closely fitted, ensuring the overall stability of the nozzle assembly 130.

[0067] like Figure 2 、 Figure 6 and Figure 10As shown, in one embodiment of the present application, the nozzle assembly 130 includes a disk 131 and multiple tubes 132, which are disposed through the disk 131. In this embodiment, there are two tubes 132, one end of which is a nozzle 133 that can connect to and communicate with the nozzle of the ejector tube 120. The other end of the tube 132 is connected to the gas pipeline. This allows gas to be safely and efficiently transferred from the gas pipeline to the ejector tube 120, ensuring that the nozzle assembly 130 can safely guide the gas to the ejector tube 120.

[0068] like Figure 2 、 Figure 6 and Figure 10 As shown, in one embodiment of the present application, at least one guide rod 160 is further included. For example, in this embodiment, there are three guide rods 160, each of which is inserted through the disc 131 so that the disc 131 can slide along the guide rod 160. In this way, the guide rod 160 can guide the disc 131, and thus the entire nozzle assembly 130, preventing the entire nozzle assembly 130 from rotating or shaking. This design provides further stability and guiding accuracy for the nozzle assembly 130. Each guide rod 160 is inserted through the disc 131 to provide precise guidance for the vertical movement of the disc 131. Since the disc 131 can slide along the guide rod 160, the movement of the disc 131 in undesirable directions can be restricted, thereby preventing the disc 131 from rotating or shaking, thereby further ensuring the stability of the nozzle assembly 130.

[0069] In one embodiment of the present application, the disc 131 is provided with at least one guide hole (not shown), the number of which corresponds to the number of guide rods 160. For example, if there is one guide rod 160, the number of guide holes is also one. If there are three guide rods 160, the number of guide rods 160 is also three. Each guide hole is provided with a graphite copper sleeve (not shown), which is mounted on the corresponding guide rod 160. The graphite copper sleeve is a sleeve made from a graphite and copper alloy through a special process and exhibits excellent self-lubricating properties. Because the graphite flakes on the inner wall of the graphite copper sleeve form a thin lubricating film during movement, even under poor lubrication conditions, the graphite copper sleeve effectively reduces friction between the guide rod 160 and itself, ensuring smooth movement of the nozzle assembly 130 and extending the service life of the device. Furthermore, the graphite copper sleeve can operate stably in high-temperature environments and has a low thermal expansion coefficient, resulting in virtually no dimensional changes due to temperature fluctuations, further ensuring the stability of the nozzle assembly 130 during movement.

[0070] like Figure 7As shown, in one embodiment of the present application, the housing 100 defines a disc hole 102, wherein the disc hole 102 corresponds to the shape and size of the disc body 131. For example, when the disc body 131 is circular, the disc hole 102 is also circular. When the disc body 131 is square, the disc hole 102 is also square. When the nozzle assembly 130 is in the first position, the disc body 131 is located within the disc hole 102, thereby sealing the accommodating space 101.

[0071] like Figure 6 and Figure 10 As shown, in one embodiment of the present application, the gas stove further includes a cover plate 180 that conforms to the shape of the disc hole 102. For example, when the disc hole 102 is circular, the cover plate 180 is also circular; when the cover plate 180 is square, the cover plate 180 is also square. When the nozzle assembly 130 is in the second position, the cover plate 180 covers the disc hole 102. This allows the cook to clean the gas stove countertop by concealing the nozzle assembly 130 beneath the cover plate 180, separating it from the countertop and preventing cleaning water from flowing into and damaging the nozzle assembly 130.

[0072] In some embodiments of the present application, the cover plate 180 may be a glass cover plate 180. Of course, the material of the cover plate 180 is not limited thereto. In other embodiments of the present application, the cover plate 180 may also be a plastic cover plate 180.

[0073] like Figure 1 and Figure 7 As shown, in one embodiment of the present application, the gas stove further includes a fixing base 170, wherein the fixing base 170 is connected to the housing 100. In this embodiment, the fixing base 170 is disposed on a side of the housing 100 facing away from the accommodating space 101. The fixing base 170 is connected to the worm gear assembly 150 to secure the worm gear assembly 150 to the housing 100. The fixing base 170 defines a first chamber 172 and a second chamber 173, which are arranged perpendicular to each other. The worm gear 151 is disposed in the first chamber 172, and the worm 152 is disposed in the second chamber 173.

[0074] like Figure 6 and Figure 10As shown, in one embodiment of the present application, a plurality of bearings 171 are provided in the fixing seat 170, and the bearings 171 are sleeved on the main body 1511. In this way, the main body 1511 can be positioned and supported by the bearings 171 in the fixing seat 170, so that the main body 1511 remains stable, unnecessary movement and deformation of the main body 1511 are reduced, and the accuracy and stability of the operation of the worm gear 151 and the worm 152 are improved. In addition, the bearing 171 is a device that allows rotation, which can reduce direct contact between the worm gear 151 and the inner wall of the fixing seat 170, thereby reducing friction between the worm gear 151 and the fixing seat 170, further improving the durability and service life of the equipment.

[0075] like Figure 6 and Figure 10 As shown, in one embodiment of the present application, the lead screw 140 is a four-wire lead screw 140. When the worm 152 drives the worm wheel 151 to rotate one circle, the lead screw 140 can rotate four circles inside the worm wheel 151, thereby improving the transmission ratio of the lead screw 140. In this way, the four-wire lead screw 140 can achieve more precise movement control of the nozzle assembly 130 due to its design, which makes the rotation and movement more coordinated. Compared with ordinary lead screws, the four-wire lead screw 140 provided in the present application can withstand greater loads. This means that it can drive the nozzle assembly 130 more stably and maintain working efficiency even in the face of large vibrations or forces.

[0076] like Figures 1 to 10 As shown, according to the gas stove provided by the present application, when the cook needs to cook, they can turn on the stepper motor, causing the stepper motor to drive the worm 152 to rotate the worm wheel 151, thereby causing the lead screw 140 in the worm wheel 151 to drive the nozzle assembly 130 to rotate to a position where the nozzle 133 is opposite the ejector tube 120. Then, the motor is turned off. At this time, the nozzle 133 can provide gas to the ejector tube 120, so that the burner 110 can ignite to heat the pot, allowing the cook to continue cooking. When the cook finishes cooking and needs to clean the gas stove countertop, they can turn on the stepper motor again, causing the stepper motor to drive the worm 152 to rotate the worm wheel 151, thereby causing the lead screw 140 in the worm wheel 151 to drive the nozzle assembly 130 to rotate into the accommodating space 101. Then, the cover 180 is closed, and the cook can wipe and clean the gas stove countertop, thereby enhancing the practicality and user experience of the gas stove during use.

[0077] Finally, it should be noted that the above embodiments are intended only to illustrate the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the embodiments, those skilled in the art will appreciate that various combinations, modifications, or equivalent substitutions of the technical solutions of the present application do not depart from the spirit and scope of the technical solutions of the present application and are intended to be encompassed by the claims of the present application.

Claims

1. A gas stove, characterized in that: include: A housing having a containing space therein; A burner head, the burner head is embedded in the shell, and a combustion area of ​​the burner head is located outside the accommodating space; An ejector pipe connected to the furnace head; A nozzle assembly, wherein the nozzle assembly is disposed in the accommodating space; A lead screw connected to the nozzle assembly; A worm gear assembly, the worm gear assembly is drivingly connected to the lead screw to drive the lead screw to move, and the lead screw drives the nozzle assembly to move between a first position and a second position; When the nozzle assembly is located at the first position, the nozzle assembly is connected and communicated with the ejector pipe to provide gas to the burner head; when the nozzle assembly is located at the second position, the nozzle assembly is located in the accommodating space.

2. The gas stove according to claim 1, characterized in that: The worm gear assembly comprises: A worm wheel, the worm wheel is sleeved on the lead screw, and the worm wheel and the lead screw are in driving cooperation; A worm, the worm being drivingly connected to the worm wheel; A driving member is connected to the worm gear, the driving member is used to drive the worm to rotate, and the worm gear drives the lead screw to rise and fall.

3. The gas stove according to claim 2, characterized in that: The worm gear comprises: A main body portion, the main body portion extends in a straight line, the lead screw is inserted in the main body portion, and the lead screw is in transmission cooperation with the main body portion; A protruding portion is arranged on the outer periphery of the main body, and the protruding portion is matched with the worm gear.

4. The gas stove according to claim 3, characterized in that: When the nozzle assembly is located at the first position, the matching length of the lead screw and the main body is L1, the length of the lead screw is L2, and the ratio of L1 to L2 is 0.3-0.

5.

5. The gas stove according to claim 3, characterized in that: When the nozzle assembly is located at the second position, the matching length between the lead screw and the main body is L1, the length of the lead screw is L2, and the ratio of L1 to L2 is 0.6-1.

6. The gas stove according to claim 1, characterized in that: The nozzle assembly comprises: Plate body; A plurality of tube bodies are provided through the disc body, one end of each tube body is a nozzle, and the nozzle is suitable for being connected and communicated with the nozzle of the ejector tube.

7. The gas stove according to claim 6, characterized in that: It also includes at least one guide rod, each of which is penetrated by the disc body, and the disc body slides along the guide rod.

8. The gas stove according to claim 7, characterized in that: The disk body is provided with at least one guide hole, each of the guide holes is provided with a graphite copper sleeve, and the graphite copper sleeve is sleeved on the corresponding guide rod.

9. The gas stove according to claim 6, characterized in that: A disc hole is formed on the shell, and when the nozzle assembly is located at the first position, the disc body is located in the disc hole.

10. The gas stove according to claim 9, characterized in that: It also includes a cover plate, which is adapted to the shape of the disc hole. When the nozzle assembly is located at the second position, the cover plate covers the disc hole.

11. The gas stove according to claim 1, characterized in that: It also includes a fixing seat, which is connected to the housing and connected to the worm gear assembly to fix the worm gear assembly to the housing.

12. The gas stove according to any one of claims 1 to 11, characterized in that: The lead screw is a four-wire lead screw.

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