A double-tube double-nozzle furnace device

Abstract

The present invention belongs to the technical field of stoves, and specifically relates to a double-tube double-nozzle stove device, comprising a main stove tube, an auxiliary stove tube and a double-nozzle gas valve, wherein the main stove tube and the auxiliary stove tube have the same length, and the diameter of the main stove tube is larger than the diameter of the auxiliary stove tube, the outer surfaces of the main stove tube and the auxiliary stove tube fit each other, the main stove tube and the auxiliary stove tube are respectively connected with two nozzles on the double-nozzle gas valve, a control mechanism is arranged in the double-nozzle gas valve, the control mechanism is arranged with a plurality of different gears, and the control mechanism is used for switching two nozzles or connecting the main stove tube and the auxiliary stove tube at the same time; the control mechanism can expand the adjustment range of the stove flame size.

Description

Technical Field

[0001] The invention belongs to the technical field of stoves, and in particular relates to a double-tube double-nozzle stove device. Background Art

[0002] A gas stove is a kitchen appliance that uses natural gas or liquefied petroleum gas as fuel. It burns the gas through a burner and transfers the generated heat to the baking surface of the food in the oven, so that the food is cooked or heated.

[0003] Gas stoves in the prior art generally include a burner head with a single tube, a gas valve with a single nozzle, and other furnace body panels. The burner head is a hollow tubular structure. A number of gas holes are opened on the two side walls of the burner along its axial direction. The principle is the same as that of a household gas stove. High-pressure liquefied natural gas or coal gas is input into the burner head and overflows from the gas holes. The overflowed gas is ignited by an ignition device. The nozzle gas valve is connected to the burner head, and liquefied natural gas or coal gas is input into the burner head through the nozzle gas valve. The nozzle gas valve can control the amount of liquefied natural gas or coal gas input into the burner head by controlling the size of the valve opening, thereby controlling the flame size of the stove to meet different cooking needs.

[0004] Since the burner head is a tubular structure, when liquefied natural gas or coal gas is input into the furnace tube through the nozzle gas valve, the gas needs to be filled into the entire furnace tube along the nozzle gas valve, and the gas needs to flow out from each gas hole on the furnace tube, so that the flame can be relatively uniform after the furnace tube is ignited. In order to achieve a better combustion effect, it is necessary to control the diameter of the furnace tube and the size of the gas hole when designing the furnace tube. The existing burner head is a single-tube furnace tube. In order to ensure the continuity of the flame during the process of adjusting different fire powers, a large furnace tube diameter will result in the gas output of the valve in the low-fire state not being able to fill the furnace tube, resulting in discontinuous flames, while a small diameter will result in the flow rate not being able to meet the gas output of the high-fire state, resulting in the fire power adjustment effect being not obvious after exceeding a certain level. In order to ensure the normal heating effect on food, some gas stoves need to have a larger diameter so that there is enough gas in the burner to be output from the gas holes. However, in this case, when a low fire state is needed, the nozzle gas valve is adjusted to a smaller gas output state, and the gas cannot fill the entire stove tube, resulting in only some gas holes being able to flow out gas and ignite, while the gas holes farther away from the nozzle gas valve have no gas flow due to insufficient pressure, resulting in uneven heating of food, causing the flame in the low fire state to present a wave-like swinging effect along the axis of the burner, and due to the low output gas pressure, the flame is easily blown out by the wind. Therefore, the output gas pressure of the nozzle gas valve cannot be too small, which limits the adjustment range of the stove for the flame size.

[0005] In order to ensure normal use in the prior art, the single-tube stove head has a small adjustment range for the flame size, which makes it impossible to use it for more refined cooking. Based on the technical defects in the prior art, a double-tube double-nozzle stove device is proposed. Summary of the invention

[0006] In order to solve the problem in the prior art that a single-tube stove head has a small adjustment range for flame size, which makes it unable to be used for more refined cooking, the present invention provides a double-tube double-nozzle stove device.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A double-tube double-nozzle stove device of the present invention comprises a main furnace tube, an auxiliary furnace tube and a double-nozzle gas valve, wherein the main furnace tube and the auxiliary furnace tube have the same length, and the diameter of the main furnace tube is larger than the diameter of the auxiliary furnace tube, the outer surfaces of the main furnace tube and the auxiliary furnace tube fit each other, the main furnace tube and the auxiliary furnace tube are respectively connected to two nozzles on the double-nozzle gas valve, a control mechanism is arranged inside the double-nozzle gas valve, the control mechanism is arranged with a plurality of different gears, and the control mechanism is used for switching the two nozzles or connecting the main furnace tube and the auxiliary furnace tube at the same time.

[0009] Furthermore, the diameter of the main furnace tube is twice the diameter of the auxiliary furnace tube.

[0010] Furthermore, the auxiliary furnace pipe is arranged parallel to the top surface of the main furnace pipe, the gas holes of the auxiliary furnace pipe are arranged at the top, and the gas holes of the main furnace pipe are arranged at both sides.

[0011] Furthermore, the gas holes on the main furnace tube and the auxiliary furnace tube are arranged equidistantly based on the axial direction.

[0012] Furthermore, the double-nozzle gas valve includes a valve body and a control mechanism, the control mechanism includes a valve core, a valve stem and a knob, the valve core and one of the radial surfaces of the valve stem are coaxially connected, the knob is connected to the other end of the valve stem, the two nozzles on the valve body are a first nozzle and a second nozzle, the first nozzle and the second nozzle are respectively connected to the auxiliary furnace pipe and the main furnace pipe, and an air inlet hole is also provided on the valve body, the valve core and the valve stem are rotatably fitted in the valve body, and the valve core rotates to control the connection and disconnection of the air inlet hole and the first nozzle and the second nozzle, so as to adjust the amount of gas in the main furnace pipe and the auxiliary furnace pipe.

[0013] Furthermore, the valve core is provided with a bypass hole, a first air hole, a second large air hole and a second small air hole. The bypass hole is connected to the first nozzle and the second nozzle respectively through a plurality of gas channels in the valve core. The bypass hole is arranged at a corresponding position of the air inlet hole of the valve body. Changing the overlap between the bypass hole and the air inlet hole is used to adjust the gas output of the first nozzle and the second nozzle.

[0014] Furthermore, the valve core also includes a first air hole, a second large air hole and a second small air hole, and the first air hole, the second large air hole and the second small air hole are respectively connected to the bypass hole through the gas channel, the first air hole is arranged at the radial end of the valve core, the second large air hole and the second small air hole are arranged at the axial end of the valve core, the diameter of the second large air hole is larger than the diameter of the second small air hole, the first air hole is connected to the first nozzle, and the second large air hole and the second small air hole are respectively connected to the second nozzle for outputting different gas amounts.

[0015] Furthermore, it also includes a valve stem bracket, which is connected to the valve body. The valve stem bracket is provided with an opening, and the valve stem passes through and rotates to fit in the opening.

[0016] The beneficial effects of the present invention are:

[0017] (1) By arranging an auxiliary furnace pipe above the original main furnace pipe of the prior art, and controlling the two nozzles through the double-nozzle gas valve in the present solution, the gas output of the two nozzles to the main furnace pipe and the auxiliary furnace pipe is changed under the condition of use, thereby achieving a wider range of adjustment of the firepower of the stove. At the same time, the auxiliary furnace pipe is used to supplement the uneven flame positions of the original main furnace pipe at different positions under different flame sizes, thereby improving the uniformity of the flames at different positions of the stove and the heating effect of food. In addition, in the case where a small part of the gas output by the original main furnace pipe is not consumed after ignition, the auxiliary furnace pipe is arranged above the main furnace pipe, so that the gas that is not completely burned in the main furnace pipe can be re-ignited through the auxiliary furnace pipe, thereby improving the utilization rate of energy, reducing energy consumption, and achieving a more environmentally friendly use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the valve stem of the present invention being adjusted to 0°;

[0021] Figure 3 This is a schematic diagram of the structure of the valve stem of the present invention being adjusted to 90°;

[0022] Figure 4 This is a schematic diagram of the structure of the valve stem of the present invention being adjusted to 180°;

[0023] Figure 5 This is a schematic diagram of the structure of the valve stem of the present invention being adjusted to 270°;

[0024] Figure 6 It is a schematic diagram of adjusting the angle of the knob of the present invention.

[0025] Explanation of the accompanying reference numerals: 1. valve body; 2. valve core; 3. valve stem; 4. valve stem bracket; 5. first nozzle; 6. second nozzle; 7. bypass hole; 8. second large hole; 9. air inlet hole; 10. second small hole; 11. auxiliary furnace pipe; 12. main furnace pipe; 13. gas hole; 14. double nozzle gas valve; 15. knob. DETAILED DESCRIPTION

[0026] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0027] like Figure 1-6 As shown, a double-tube double-nozzle stove device of the present invention comprises a main furnace tube 12, an auxiliary furnace tube 11 and a double-nozzle gas valve 14, the main furnace tube 12 and the auxiliary furnace tube 11 have the same length, and the diameter of the main furnace tube 12 is larger than the diameter of the auxiliary furnace tube 11, the outer surfaces of the main furnace tube 12 and the auxiliary furnace tube 11 are in contact with each other, the main furnace tube 12 and the auxiliary furnace tube 11 are respectively connected to two nozzles on the double-nozzle gas valve 14, and a control mechanism is arranged in the double-nozzle gas valve 14, the control mechanism is arranged with a plurality of different gears, and the control mechanism is used for switching the two nozzles or connecting the main furnace tube 12 and the auxiliary furnace tube 11 at the same time;

[0028] Since there is only one furnace tube in the existing stove, in order to ensure the heating efficiency, the diameter of the furnace tube is relatively large. When the food needs to be heated quickly, the large gas output ensures that the flame is large enough to meet the use. When the food needs to be heated with a low fire, after the gas output through the nozzle valve is reduced, after the original gas in the furnace tube is consumed in the first stage, due to insufficient gas supply, the flame will quickly decrease. In the second stage of flame reduction, the gas in the furnace tube is always in an unsatisfactory state. Since the diameter of the furnace tube is large, the nozzle valve outputs a small amount of gas, resulting in insufficient air pressure in the furnace tube, resulting in only gas holes 13 near the nozzle valve having gas output and ignition. The gas is consumed after reaching the opening position near the nozzle valve, and the gas holes 13 far from the nozzle valve have no gas output due to insufficient air pressure. Therefore, the gas holes 13 at the far end do not generate flames, resulting in the furnace tube only being able to heat a local position of the food, resulting in uneven heating, poor heating effect on the food, and a small adjustment range of the flame.

[0029] In order to improve the flame size adjustment range of the stove during the heating process, the present invention provides a main furnace pipe 12 and an auxiliary furnace pipe 11 respectively, and the auxiliary furnace pipe 11 is arranged above the main furnace pipe 12, and the two nozzles of the double nozzle gas valve 14 are respectively connected to the main furnace pipe 12 and the auxiliary furnace pipe 11. Since the diameter of the auxiliary furnace pipe 11 is small and the volume inside is small, the gas pressure output through the nozzle valve is small, and the gas hole 13 far away from the nozzle valve can reach and output the gas. At the same time, the gas output pressure of the nozzle valve connected to the auxiliary furnace pipe 11 can be small. Therefore, it is possible to adjust the flame of the auxiliary furnace pipe 11 to a smaller state, and through the cooperation of the auxiliary furnace pipe 11 and the main furnace pipe 12, the original flame can be adjusted to a larger state while being able to adjust to a smaller flame. The control mechanism can control various cooperation states of the main furnace pipe 12 and the auxiliary furnace pipe 11. When the main furnace pipe 12 and the auxiliary furnace pipe 11 are connected to the nozzle at the same time, it is a high fire, when only the main furnace pipe 12 is connected to the nozzle, it is a medium fire, and when only the auxiliary furnace pipe 11 is connected to the nozzle, it is a low fire. The adjustment range of its firepower is larger than that of the single furnace pipe in the prior art.

[0030] In one embodiment, the diameter of the main furnace tube 12 is twice the diameter of the auxiliary furnace tube 11; the internal capacity of the main furnace tube 12 is four times the internal capacity of the auxiliary furnace tube 11. Under the condition of the same gas output, the gas output from the nozzle cannot fill the entire main furnace tube 12, and it cannot be guaranteed that all the gas holes 13 adjusted to a low fire state have the gas pressure requirement for flame output. Since the capacity of the auxiliary furnace tube 11 is only 1 / 4 of the main furnace tube 12, the gas can continue to fill the auxiliary furnace tube 11 when it is adjusted to a low fire state, thereby ensuring that the gas passes through all the gas holes 13 and is output.

[0031] During the use of the furnace tube, the flame generated by the combustion of the gas hole 13 on the furnace tube increases the temperature of the surrounding air. Since the high-temperature gas will rise, after the air around the flame is consumed, the air with a lower temperature nearby will be replenished near the flame and consumed by the flame again. The above process is repeated. In this process, if the gas ejected from the flame hole is not completely consumed, it will rise with the higher temperature. Since the gas with a lower temperature on both sides is continuously replenished to the middle, the air in the local area flows unidirectionally toward the flame direction, resulting in the incompletely burned natural gas or coal gas only rising. In the prior art, since the gas holes 13 are on both sides of the furnace tube for gas discharge, the natural gas or coal gas is partially burned after being ejected, and the other part rises at a high temperature. The flame height of the furnace tube with gas discharge on both sides is insufficient, and the rising natural gas or coal gas cannot be ignited, resulting in the incompletely burned part of the natural gas or coal gas floating into the air, resulting in energy waste.

[0032] Therefore, in one embodiment, the auxiliary furnace pipe 11 is arranged parallel to the top surface of the main furnace pipe 12, the gas holes 13 of the auxiliary furnace pipe 11 are arranged at the top, and the gas holes 13 of the main furnace pipe 12 are arranged on both sides;

[0033] The main furnace tube 12 and the auxiliary furnace tube 11 in this scheme are stacked against each other, and the auxiliary furnace tube 11 is arranged on the top surface of the main furnace tube 12. After some unburned natural gas or coal gas drifting out from both sides of the main furnace tube 12 rises to the position of the auxiliary furnace tube 11, since the auxiliary furnace tube 11 is above the main furnace tube 12, the rising natural gas or coal gas will be re-ignited by the auxiliary furnace tube 11, so that energy is fully utilized, and natural gas or coal gas is prevented from drifting into the air, resulting in energy waste, thereby improving energy utilization efficiency and reducing energy consumption. Although completely burned natural gas or coal gas will also drift out of the auxiliary furnace tube 11, its exhaust volume is smaller than that of the main furnace tube 12, so the unburned gas discharged is also less, so its energy utilization efficiency is greatly improved compared with the prior art. At the same time, the auxiliary furnace tube 11 is located above the main furnace tube 12, which can make the distance between the flame of the auxiliary furnace tube 11 and the heated object closer, so as to provide better heat.

[0034] In the above process, after the incompletely burned gas rises from the gas hole 13 of the main furnace tube 12 to the position of the gas hole 13 of the auxiliary furnace tube 11, it is ignited by the flame ignited by the gas hole 13 of the auxiliary furnace tube 11, thereby expanding the flame range of the auxiliary furnace tube 11. Since the gas holes 13 on both sides of the main furnace tube 12 are respectively located below the left and right sides of the auxiliary furnace tube 11, the flames generated by them and the flames of the incompletely burned gas ignited by the auxiliary furnace tube 11 will approach each other and merge into a larger flame. The larger flame can keep it from being easily extinguished by external wind force and is not easy to swing, thereby improving its stability and the heating effect on food.

[0035] Since the gas holes 13 of the furnace tube in the prior art are located on both sides of the furnace tube, the flames extend upward from both sides of the furnace tube and merge with each other. However, when the flame is adjusted to a smaller state, the flame generated by the amount of gas output cannot merge the flames on both sides, resulting in the two rows of flames on both sides being independent of each other, resulting in a high temperature at the flame position and a low temperature in the middle of the two rows of flames, which is not conducive to the overall heating effect of the food. The auxiliary furnace tube 11 in the present solution is arranged above the main furnace tube 12, the gas holes 13 of the auxiliary furnace tube 11 are in the middle, and the gas holes 13 of the main furnace tube 12 are on both sides. When it is necessary to adjust the flame size to the prior art, it is only necessary to adjust the flame of the main furnace tube 12 to a small fire state, and the flame of the auxiliary furnace tube 11 remains the same. The auxiliary furnace tube 11 supplements the vacant state of the flame in the middle of the original main furnace tube 12, thereby improving the uniformity of heating the food.

[0036] In order to further improve the gas output balance of the gas holes 13 in the main furnace tube 12 and the auxiliary furnace tube 11, which are at the relatively far and near ends from the two nozzles, partitions can also be horizontally arranged in the main furnace tube 12 and the auxiliary furnace tube 11, dividing the interiors of the main furnace tube 12 and the auxiliary furnace tube 11 into two upper and lower communicating parts, so that the axial cross-section of the channels in the main furnace tube 12 and the auxiliary furnace tube 11 is in a "C" shape. Half of the gas directly sprays out from the nozzle and flows out from the gas holes 13 near the nozzle, and the other part surrounds through the lower channel to the gas holes 13 on the side far from the nozzle and flows out, making the gas output from the gas holes 13 at the far and near ends from the nozzle relatively average, and the burning flame is relatively stable.

[0037] In order to ensure the stability and uniformity of the flames generated by the main furnace tube 12 and the auxiliary furnace tube 11, so as to ensure the same heating effect on different positions of the food, the gas holes 13 on the main furnace tube 12 and the auxiliary furnace tube 11 are equidistantly arranged based on the axis direction of their respective furnace tubes.

[0038] Since in the above embodiment, the double-nozzle gas valve 14 is respectively connected to the main furnace tube 12 and the auxiliary furnace tube 11 to realize gas supply, and in the prior art, the double-nozzle gas valve 14 realizes the on-off of the gas of the two nozzles by the sliding fit or separation of the valve core 2 with the two nozzles. Since the valve core 2 makes a reciprocating sliding movement, it is easy to cause the rapid wear of its sealing fit surface, resulting in the frequent replacement of the valve. In order to improve the service life of the valve, in one embodiment, the double-nozzle gas valve 14 includes a valve body 1 and a control mechanism. The control mechanism includes a valve core 2 and a valve rod 3. One of the radial surfaces of the valve core 2 and the valve rod 3 is coaxially connected, and a knob 15 is connected to the other end of the valve rod 3. The two nozzles on the valve body 1 are respectively a first nozzle 5 and a second nozzle 6. The first nozzle 5 and the second nozzle 6 are respectively connected to the auxiliary furnace tube 11 and the main furnace tube 12. An air inlet hole 9 is also opened on the valve body 1. The valve core 2 and the valve rod 3 are rotationally fitted in the valve body 1. The valve core 2 rotates to control the on-off of the air inlet hole 9 with the first nozzle 5 and the second nozzle 6, and is used to adjust the gas volume in the main furnace tube 12 and the auxiliary furnace tube 11;

[0039] Different from the way in the prior art that the on-off of the two nozzles is realized by the reciprocating sliding of the valve core 2 in the valve body 1, in this solution, the on-off of the air inlet hole 9 with the first nozzle 5 and the second nozzle 6 is controlled by the rotation of the valve body 1 and the valve core 2. Since the valve core 2 is inside the valve body 1, the valve rod 3 is connected to the valve core 2, and the rotation of the valve core 2 is controlled through the valve rod 3 to realize the on-off of the two nozzles. By replacing the original sliding movement with the rotational movement of the valve core 2, the wear of the mutually contacting parts on the fitting surface between the valve core 2 and the valve body 1 can be effectively reduced, and the service life of the double-nozzle gas valve 14 can be effectively improved.

[0040] In order to more conveniently control the rotation angle of the valve core 2, a knob 15 is arranged outside the valve body 1 and connected to the valve stem 3. A pointer is arranged on the knob 15 for identifying the rotation angle of the knob 15 to control the flame size of the stove.

[0041] Since the valve core 2 and the valve body 1 in the above embodiment cooperate to realize the on-off control of the first nozzle 5 and the second nozzle 6 by a rotational fitting connection, and the on-off control by the rotational fitting is generally realized by blocking the channels of the valve body 1 at different positions of the radial end surface of the valve core 2 through the radial end surface of the valve core 2, which is generally used for liquid valves. Since the gas can pass through a smaller gap in the valve, it is necessary to ensure a better sealing effect of the valve. Therefore, in one embodiment, the valve core 2 is provided with a bypass hole 7, a first air hole, a second large air hole 8 and a second small air hole 10. The bypass hole 7 is connected with the first air hole, the second large air hole 8 and the second small air hole 10 respectively. The bypass hole 7 is arranged at the corresponding position of the air inlet hole 9 of the valve body 1. Changing the overlap between the bypass hole 7 and the air inlet hole 9 is used to adjust the gas outlet state of the first air hole, the second large air hole 8 and the second small air hole 10. The first air hole is arranged at the radial end of the valve core 2, the first air hole is connected with the first nozzle 5, the second large air hole 8 and the second small air hole 10 are arranged at the axial end of the valve core 2, and the second large air hole 8 and the second small air hole 10 are respectively connected with the second nozzle 6 for outputting different gas amounts;

[0042] The bypass hole 7 on the valve core 2 is communicated with the first air hole, the second large air hole 8 and the second small air hole 10 respectively. The bypass hole 7 is communicated with the air inlet hole 9 of the valve body 1 in the valve body 1. The air inlet hole 9 on the valve body 1 is used to input gas from the outside, and the first air hole is arranged on the radial surface of the valve core 2, and the second large air hole 8 and the second small air hole 10 are arranged at different angles of the axial surface of the valve core 2. The valve core 2 and the inner wall of the valve body 1 are rotated to fit and seal. When the bypass hole 7 is completely fitted with the side wall of the valve body 1 but does not overlap with the air inlet hole 9, no gas is output from the first air hole, the second large air hole 8 and the second small air hole 10. When the valve core 2 rotates a certain angle until the bypass hole 7 coincides with the air inlet hole 9, the first air hole will output gas. At this time, if the second large air hole 8 and the second small air hole 10 are still in contact with the inner wall of the valve body 1, no gas will be output. When one of them coincides with the air outlet hole of the second nozzle 6, one of the second large air hole 8 and the second small air hole 10 will output gas. Moreover, since the second large air hole 8 and the second small air hole 10 are at different angles on the axial surface of the valve core 2, only one air hole can output gas at the same time, thereby realizing the change of the second nozzle 6 outputting a large amount of gas and a small amount of gas.

[0043] During the rotation of the valve core 2 by the knob 15 and the valve stem 3, the control method of achieving different flame sizes by controlling the different output states of the first air hole, the second large air hole 8 and the second small air hole 10 is as follows;

[0044] (1) When the valve stem 3 is at 0°, the bypass hole 7 is sealed against the inner wall of the valve body 1, and no gas is output. Therefore, the first gas hole, the second large gas hole 8, and the second small gas hole 10 all have no gas output. Therefore, the first nozzle 5 and the second nozzle do not output gas to the main furnace tube 12 and the auxiliary furnace tube 11, and therefore no flame is generated.

[0045] (2) When the valve stem 3 is at 90°, the bypass hole 7 coincides with the air inlet hole 9 on the valve body 1, and gas is output to the first air hole and the second large air hole 8 through the bypass hole 7, while the second small air hole 10 is in contact with the inner wall of the valve body 1, so that the gas is output to the auxiliary furnace pipe 11 and the main furnace pipe 12 through the first air hole and the second large air hole 8, and the output gas amount is the largest, and the flame generated is the largest;

[0046] (3) When the valve stem 3 is at 180°, the bypass hole 7 coincides with the air inlet hole 9 on the valve body 1, and gas is output to the first air hole and the second small air hole 10 through the bypass hole 7, while the second large air hole 8 is in contact with the inner wall of the valve body 1. Therefore, the gas is output to the auxiliary furnace pipe 11 and the main furnace pipe 12 through the first air hole and the second small air hole 10. The output gas amount is relatively small, and the flame generated is small.

[0047] (4) When the valve stem 3 is at 270°, the bypass hole 7 coincides with the air inlet hole 9 on the valve body 1, and gas is output to the first air hole through the bypass hole 7, while the second large air hole 8 and the second small air hole 10 are in contact with the inner wall of the valve body 1. Therefore, the gas is output to the auxiliary furnace pipe 11 through the first air hole, and the output gas amount is the smallest, and the flame generated is the smallest.

[0048] Since the valve stem 3 is connected to the valve core 2 in the above embodiment and is used to control the rotation of the valve core 2 relative to the valve body 1, and the valve stem 3 is partially inside the valve body 1 and partially outside the valve body 1, it is easy to cause the valve body 1 and the valve core 2 to be pried under the action of external force, resulting in damage to the valve and leakage of the valve. Therefore, in order to improve safety, in one embodiment, a valve stem bracket 4 is further included, and the valve stem bracket 4 is connected to the valve body 1. The valve stem bracket 4 is provided with an opening, and the valve stem 3 penetrates and rotates to fit in the opening;

[0049] The valve stem bracket 4 is arranged on the outside of the valve body 1 and connected to the valve body 1, and the valve stem 3 passes through the valve stem bracket 4 and rotates and fits therewith, which can protect the valve stem 3. At the same time, since the valve stem 3 in the above embodiment is provided with a knob 15 for adjusting the rotation angle of the valve stem 3 relative to the valve core 2, in order to more conveniently check the rotation angle of the knob 15, a sticker can be provided on the valve stem bracket 4 to display the angle, and a pointer can be provided on the knob 15 for use in conjunction with the sticker, thereby improving convenience of use.

[0050] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A double-tube double-nozzle stove device, characterized in that: It comprises a main furnace pipe, an auxiliary furnace pipe and a double-nozzle gas valve, wherein the main furnace pipe and the auxiliary furnace pipe have the same length, and the diameter of the main furnace pipe is larger than that of the auxiliary furnace pipe, the outer surfaces of the main furnace pipe and the auxiliary furnace pipe are fitted with each other, the main furnace pipe and the auxiliary furnace pipe are respectively connected with two nozzles on the double-nozzle gas valve, a control mechanism is arranged inside the double-nozzle gas valve, the control mechanism is arranged with a number of different gears, and the control mechanism is used for switching the two nozzles or connecting the main furnace pipe and the auxiliary furnace pipe at the same time; the diameter of the main furnace pipe is twice the diameter of the auxiliary furnace pipe; the auxiliary furnace pipe is arranged in parallel to the top surface of the main furnace pipe, the gas hole of the auxiliary furnace pipe is arranged at the top, and the gas holes of the main furnace pipe are arranged on both sides; The double-nozzle gas valve comprises a valve body and a control mechanism, the control mechanism comprises a valve core, a valve stem and a knob, the valve core and one of the radial surfaces of the valve stem are coaxially connected, the knob is connected to the other end of the valve stem, the two nozzles on the valve body are respectively a first nozzle and a second nozzle, the first nozzle and the second nozzle are respectively connected to the auxiliary furnace pipe and the main furnace pipe, an air inlet hole is also provided on the valve body, the valve core and the valve stem are rotatably fitted in the valve body, the valve core rotates to control the connection and disconnection of the air inlet hole with the first nozzle and the second nozzle, so as to adjust the amount of gas in the main furnace pipe and the auxiliary furnace pipe; The valve core is provided with a bypass hole, a first air hole, a second large air hole and a second small air hole. The bypass hole is respectively connected with the first nozzle and the second nozzle through a plurality of gas channels in the valve core. The bypass hole is arranged at a corresponding position of the air inlet hole of the valve body. Changing the overlap between the bypass hole and the air inlet hole is used to adjust the gas output of the first nozzle and the second nozzle. The valve core also includes a first air hole, a second large air hole and a second small air hole, and the first air hole, the second large air hole and the second small air hole are respectively connected to the bypass hole through the gas channel, the first air hole is arranged at the radial end of the valve core, the second large air hole and the second small air hole are arranged at the axial end of the valve core, the diameter of the second large air hole is larger than the diameter of the second small air hole, the first air hole is connected to the first nozzle, and the second large air hole and the second small air hole are respectively connected to the second nozzle for outputting different gas amounts.

2. A double-tube double-nozzle stove device according to claim 1, characterized in that: The gas holes on the main furnace tube and the auxiliary furnace tube are arranged equidistantly based on the axial direction.

3. A double-tube double-nozzle stove device according to claim 2, characterized in that: It also includes a valve stem bracket, which is connected to the valve body. The valve stem bracket is provided with an opening, and the valve stem passes through and rotates to fit in the opening.

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