Gas nozzle and gas stove

Abstract

This application discloses a gas nozzle and a gas stove, belonging to the technical field of combustion equipment, to solve the technical problem of limited air injection capacity in current gas nozzles. The gas nozzle includes a tube body, which has a gas passage, an air passage, a premixing passage, and a mixing passage. The tube body surface has a gas inlet communicating with the gas passage and an air inlet communicating with the air passage. The gas passage is connected to the mixing passage through the premixing passage, and the air passage is also connected to the mixing passage through the premixing passage. The inner walls of the air passage and the premixing passage are transitionally connected. This transitional connection guides air from the air passage into the premixing passage, making it easier for air from outside the tube body to enter the premixing passage, thereby improving the air injection capacity of this application.

Description

Technical Field

[0001] This application belongs to the field of combustion device technology, and in particular relates to a gas nozzle and a gas stove. Background Technology

[0002] A gas stove is a kitchen appliance that uses liquefied petroleum gas (LPG), manufactured gas, natural gas, or other gaseous fuels for direct-fire heating. Direct flame is produced by introducing gaseous fuel into the stove, mixing it with air, and then igniting the mixture. The nozzle in the gas stove is connected to an injector tube; the gaseous fuel and air enter the nozzle and then the injector tube.

[0003] In related technologies, gas nozzles are equipped with separate gas and air channels. Gas can enter the gas nozzle through the gas channel, and air can enter the nozzle through the air channel. Since the gas and air flow directions are different before mixing, and the gas flow rate is faster, the gas will affect the air entering the gas nozzle, thus affecting the air ejection capability of the gas nozzle. Summary of the Invention

[0004] This application aims to at least partially solve the technical problem of limited air ejection volume in current gas nozzles. To this end, this application provides a gas nozzle and a gas stove.

[0005] This application provides a gas nozzle, including a pipe body.

[0006] The pipe body has a gas passage, an air passage, a premixing passage, and a mixing passage. The surface of the pipe body has a gas inlet communicating with the gas passage and an air inlet communicating with the air passage.

[0007] The gas passage is connected to the gas mixing passage through the premixing passage, and the air passage is connected to the gas mixing passage through the premixing passage, with the air passage and the inner wall of the premixing passage being transitionally connected.

[0008] In the gas nozzle proposed in this application embodiment, gas enters the premixing channel through the gas channel, and air enters the premixing channel through the air channel. The transition connection between the inner wall of the air channel and the inner wall of the premixing channel can guide the air in the air channel, making it easier for the air to enter the premixing channel and mix with the gas. This ensures that a sufficient amount of air can enter the premixing channel, so that the air and gas can be further mixed after entering the mixing channel, making the flame generated after the mixed gas discharged from the gas nozzle of this application more stable.

[0009] In some embodiments, the air passage and the premixing passage are provided with a transition section, which bends or curves toward the extension direction of the premixing passage.

[0010] The transition section bends or bends in the direction of the premixing channel, which allows the transition section to guide the gas in the air channel into the premixing channel, and makes the flow direction of the air entering the premixing channel more consistent with the flow direction of the gas in the premixing channel. In this way, the gas can carry the air into the mixing channel.

[0011] In some embodiments, the inner wall of the transition section is at least one of an inclined surface, an arc surface, a multi-segment inclined surface, and a multi-segment arc surface.

[0012] The inclined plane, curved surface, multi-segment inclined plane and multi-segment curved surface are all bent or curved in the direction of extension of the premix channel, thereby achieving the function of guiding air.

[0013] In some embodiments, the gas passage, the premixing passage, and the mixing passage extend through the pipe body along its axial direction, the air inlet is located on the side wall of the pipe body, and the air passage extends from the side wall of the pipe body to communicate with the premixing passage.

[0014] This design allows for a rational layout of the gas passage, premixing passage, and gas flow passage, thereby reducing the volume of the pipe body.

[0015] In some embodiments, the axial direction of the air passage is the same as the radial direction of the tube body.

[0016] The air inlet is located on the side wall of the tube, which allows the tube to have a relatively small volume while maintaining a large opening area for the air inlet.

[0017] In some embodiments, the mixing channel has opposing mixing inlet and mixing outlet ends, the mixing inlet end being connected to the premixing channel, and the inner diameter of the mixing channel gradually decreasing in the direction from the mixing inlet end to the mixing outlet end.

[0018] The inner diameter of the mixing channel gradually decreases, giving the mixing channel a tapered structure. This increases the flow rate of the mixed gas passing through the mixing channel, thereby increasing the amount of air entering the pipe body from the outside, and thus making the air ejection capability of the gas nozzle of this application stronger.

[0019] In some embodiments, there are multiple air inlets, which are distributed circumferentially along the pipe body.

[0020] By setting multiple air inlets, the air ejection capability of the gas nozzle in this application can be improved.

[0021] In some embodiments, the pipe body includes a first pipe section and a second pipe section, the first pipe section and the second pipe section are detachably connected, the mixing channel is disposed in the second pipe section, and the gas channel, the air channel and the premixing channel are all disposed in the first pipe section.

[0022] The first and second tube sections can be prepared separately, thereby reducing the difficulty of tube preparation.

[0023] In some embodiments, the inner diameter of the gas passage gradually decreases in the direction from the gas inlet to the premixing passage.

[0024] By setting the gas passage to a tapered structure, the gas can be accelerated through the gas passage into the premixing chamber, thereby making the gas nozzle of this application have a stronger gas ejection capability.

[0025] Secondly, based on the gas nozzle described above, this application proposes a gas stove that includes the gas nozzle described above.

[0026] When the gas nozzle of this application is applied to a gas stove, the air ejection capability and gas ejection capability of the gas stove can be enhanced, thereby making the flame generated by the gas stove stronger and more stable. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This illustration shows a schematic diagram of the internal structure of a gas nozzle disclosed in an embodiment of this application from a first-view perspective.

[0029] Figure 2 This paper shows a schematic diagram of the overall structure of the gas nozzle disclosed in an embodiment of this application;

[0030] Figure 3 This paper shows a cross-sectional schematic diagram of a gas nozzle disclosed in an embodiment of this application from a second perspective.

[0031] Figure 4 A cross-sectional schematic diagram of the gas nozzle disclosed in an embodiment of this application is shown from a third perspective.

[0032] Figure label:

[0033] 100 - Pipe body, 110 - Gas inlet, 120 - Air inlet, 130 - Gas outlet

[0034] 200 - First pipe section, 210 - Gas passage, 220 - Air passage, 230 - Premixing passage, 240 - Transition section.

[0035] 300 - Second pipe section, 310 - Mixing passage, 311 - Mixing inlet end, 312 - Mixing outlet end.

[0036] 400 - Threaded section. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0038] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0039] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0040] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0041] This application is described below with reference to the accompanying drawings and specific embodiments:

[0042] Example 1

[0043] Please refer to Figures 1-4This application discloses a gas nozzle, including a pipe body 100. This gas nozzle can be applied to combustion equipment such as gas stoves.

[0044] refer to Figure 1 The pipe body 100 is the basic component of the gas nozzle, and it provides a mounting base for at least some other components of the gas nozzle. The pipe body 100 has an internal channel and is equipped with a gas inlet 110 and an air inlet 120. The pipe body 100 can be connected to a gas pipe through the gas inlet 110, allowing gas to enter the pipe body 100 through the gas inlet 110. Air can enter the pipe body 100 through the air inlet 120, and the air can mix with the gas entering the pipe body 100 to form a gas mixture.

[0045] refer to Figure 1 and Figure 2 The pipe body 100 is provided with a gas passage 210, an air passage 220, a premixing passage 230, and a mixing passage 310. One end of the gas passage 210 extends to the surface of the pipe body 100 and communicates with the gas inlet 110. The other end of the gas passage 210 is connected to the mixing passage 310 through the premixing passage 230. Gas in the gas pipe can enter the gas passage 210 through the gas inlet 110, and then pass through the premixing passage 230 and the mixing passage 310.

[0046] Air from outside the gas nozzle enters the air passage 220 through the air inlet 120, and then enters the premixing passage 230. Since both gas and air enter the premixing passage 230, they can meet and undergo preliminary mixing. The premixing passage 230 is also connected to the mixing passage 310. The preliminary mixture formed by the meeting of gas and air in the premixing passage 230 can enter the mixing passage 310, where it can be further mixed, resulting in a more continuous and stable flame after ignition.

[0047] Specifically, because the gas entering the gas passage 210 through the gas pipe has a relatively fast flow rate, the gas can draw air from outside the gas nozzle into the pipe body 100 through the air inlet 120. Alternatively, a dedicated air inlet pipe can be provided, connected to the air inlet 120 on the pipe body 100, allowing air at a certain pressure to be injected into the pipe body 100. This application does not restrict the air intake method for the gas nozzle.

[0048] Since the gas passage 210 and the air passage 220 are independent of each other, the interface between the gas passage 210 and the premixing passage 230 is different from the connection between the air passage 220 and the premixing passage 230. This results in different airflow directions for the gas entering the premixing passage 230 and for the air entering the premixing passage 230, causing the gas and air to affect each other and thus affecting the mixing effect of the gas and air.

[0049] To achieve better mixing of gas and air, the inner walls of the air passage 220 and the premixing passage 230 can be seamlessly connected. This seamless connection guides the air within the air passage 220, causing its flow direction to gradually align with the gas flow direction as it enters the premixing passage 230. This prevents direct air impact on the gas within the premixing passage 230, making it easier for air to enter and mix with the gas. Simultaneously, it prevents interference between air and gas, ensuring better mixing within the premixing passage 230. This results in a more stable flame after the mixture passes through the mixing passage 310 and is ignited.

[0050] In the gas nozzle proposed in this application embodiment, gas enters the premixing channel 230 through the gas channel 210, and air enters the premixing channel 230 through the air channel 220. The transition connection between the inner wall of the air channel 220 and the inner wall of the premixing channel 230 can guide the air in the air channel 220, making it easier for the air to enter the premixing channel 230 and mix with the gas, so as to ensure that a sufficient amount of air can enter the premixing channel 230. In this way, the air and gas can be further mixed after entering the mixing channel 310, making the flame generated after the mixed gas discharged from the gas nozzle of this application more stable.

[0051] refer to Figure 1 In one embodiment, to facilitate a transitional connection between the inner wall of the air passage 220 and the inner wall of the premixing passage 230, a transition section 240 may be provided between the air passage 220 and the premixing passage 230. The transition section 240 may be bent or folded in the extending direction of the premixing passage 230. In this way, the transition section 240 can guide the air in the air passage 220 to enter the premixing passage 230 along the inner wall of the transition section 240. This makes the air flow direction after passing through the transition section 240 close to or consistent with the flow rate of the gas entering the premixing passage 230. In this way, the air can more easily enter the premixing passage 230 and mix with the gas in the premixing passage 230 before flowing to the mixing passage 310.

[0052] Specifically, the inner wall of the transition section 240 can be configured as a slope, which can be bent towards the extension direction of the premixing channel 230. Alternatively, the inner wall of the transition section 240 can be configured with multiple slope segments connected together, each of which bends towards the extension direction of the premixing channel 230. By configuring multiple slope segments, the air entering the transition section 240 can be guided multiple times, making the air flow direction closer to or consistent with the flow direction of the fuel gas in the premixing channel 230 after entering the premixing channel 230.

[0053] Of course, the inner wall of the transition section 240 can also be set as an arc surface. The arc surface can be bent towards the extension direction of the premixing channel 230. By setting the arc surface, cold sharp corners can be avoided at the connection between the inner wall of the transition section 240 and the inner wall of the air channel 220, and at the connection between the inner wall of the transition section 240 and the inner wall of the premixing channel 230. This makes it easier to guide the air flow direction after the gas enters the premixing channel 230 to be close to or consistent with the extension direction of the premixing channel 230, so that the air flow direction is closer to or consistent with the gas flow direction entering the premixing channel 230.

[0054] The inner wall of the transition section 240 can also be configured as a multi-segment arc surface. The multi-segment arc surface can guide the air entering the transition section 240 multiple times, which will have a better guiding effect on the airflow direction.

[0055] refer to Figure 1 In some embodiments, to optimize the placement of the various channels within the pipe body 100 and reduce its overall volume, the gas channel 210, premixing channel 230, and mixing channel 310 described above can be arranged axially along the pipe body 100 and penetrate it. Thus, the gas inlet 110 can be located on one end of the pipe body 100, and correspondingly, an outlet 130 can be opened on the other end of the pipe body 100. The outlet 130 communicates with the mixing channel 310, and the outlet 130 and gas inlet 110 are positioned opposite each other. The gas channel 210 and premixing channel 230 are arranged in the same direction, making it easier for gas in the gas channel 210 to enter the premixing channel 230, and also allowing gas to enter the gas stove more quickly through the gas nozzle.

[0056] Specifically, the central axes of the gas passage 210, premixing passage 230, and mixing passage 310 can be set to be collinear with the central axis of the pipe body 100. In this way, the gas passage 210, premixing passage 230, and mixing passage 310 are located at the center of the pipe body 100, thereby making the structure of the pipe body 100 standard, which is conducive to the manufacture of the pipe body 100, and can also reduce the volume of the pipe body 100.

[0057] The air inlet 120 can be opened on the side wall of the pipe body 100. Correspondingly, the air channel 220 extends from the side wall of the pipe body 100 to communicate with the premixing channel 230 inside the pipe body 100. The air inlet 120 is set on the side wall of the pipe body 100 so that the opening of the air inlet 120 is large, without increasing the inner and outer diameter of the pipe body 100, thereby reducing the volume of the pipe body 100.

[0058] refer to Figure 1 and Figure 2 In some embodiments, in order to allow air to enter the premixing channel 230 more efficiently through the air channel 220, the extension direction of the air channel 220 can be set to be in the same direction as the radial direction of the tube body 100. This makes the length of the air channel 220 the shortest, and correspondingly, the travel distance of the air through the air channel 220 is shorter.

[0059] Of course, to facilitate the introduction of air from the air passage 220 into the premixing passage 230, the air passage 220 can be inclined relative to the axial direction of the pipe body 100. Specifically, the air inlet 120 can be opened on the side wall of the pipe body 100 and offset from the premixing passage 230. In this way, the air passage 220 is also inclined as a whole. When the air passes through the air passage 220, the air flow direction is guided once, so that the air flow direction is close to the flow direction of the gas entering the premixing passage 230. Then, when the air passes through the transition section 240, the transition section 240 can guide the air a second time. After the second guidance, the air flow direction is even closer to the flow direction of the gas in the premixing passage 230.

[0060] Of course, in order to solve the problem that the misalignment of the air inlet 120 and the premixing channel 230 leads to an increase in the length of the air channel 220, and thus an increase in the travel distance of the air through the air channel 220, the air inlet 120 can be connected to a gas pressurizing device. The gas pressurizing device can introduce air with a pressure greater than atmospheric pressure into the air channel 220, thereby giving the gas entering the air channel 220 a faster flow rate, so that the air can quickly pass through the air channel 220 into the premixing channel 230.

[0061] It should be noted that when the air inlet 120 and the premixing channel 230 are misaligned, a transition section 240 can also be provided at the air inlet 120. The transition section 240 can make it easier for air outside the tube 100 to be introduced into the air channel 220.

[0062] In some embodiments, one end of the mixing channel 310 connected to the premixing channel 230 is the mixing inlet end 311, and the other end is the mixing outlet end 312. The mixed gas in the mixing channel 310 can be discharged outside the mixing channel 310 through the mixing outlet end 312. From the mixing inlet end 311 to the mixing outlet end 312, the inner diameter of the mixing channel 310 gradually decreases, making the mixing channel 310 a tapered structure. This increases the flow rate of the mixed gas through the mixing channel 310, accelerating the flow of the mixed gas through the mixing channel 310. This increases the flow rate of the mixed gas entering the gas stove through the gas nozzle of this application, thereby generating a stronger flame in the gas stove.

[0063] When the mixed gas accelerates through the mixing channel 310, the flow rate of the mixed gas entering the mixing channel 310 increases accordingly. Under the condition that the flow rate of the gas entering the pipe body 100 is controlled at a certain level, the flow rate of the air entering the premixing channel 230 from the air channel 220 can be increased. This can increase the concentration of air in the mixed gas, enhance the ability of the gas nozzle of this application to induced air, make the gas more fully combusted, and reduce the amount of exhaust gas.

[0064] refer to Figures 1-4 In some embodiments, in order to further improve the air ejection capability of the gas nozzle of this application, multiple air inlets 120 can be provided on the pipe body 100, and correspondingly, multiple air channels 220 are also provided. The multiple air channels 220 are respectively connected to multiple air inlets 120. This arrangement allows air outside the pipe body 100 to enter the premixing channel 230 inside the pipe body 100 through multiple air inlets 120, thereby increasing the air flow rate entering the premixing channel 230. This can further increase the air concentration in the mixed gas discharged from the gas nozzle of this application, thereby improving the air ejection capability of the gas nozzle and making the gas combustion more complete.

[0065] Multiple air inlets 120 are evenly distributed along the circumference of the pipe body 100. Correspondingly, multiple air channels 220 are also evenly distributed along the circumference of the pipe body 100 within the pipe body 100. This ensures that the airflow entering the premixing channel 230 through each air channel 220 remains stable, thereby facilitating the entry of multiple streams of air into the premixing channel 230.

[0066] In some embodiments, to facilitate the fabrication of the tube body 100, the tube body 100 may be configured to include a first tube section 200 and a second tube section 300. The gas mixing channel 310 may be disposed in the second tube section 300, and the gas passage 210, the premixing channel 230 and the air passage 220 may be disposed in the first tube section 200. In this way, the first tube section 200 and the second tube section 300 may be processed and shaped respectively, and then the two may be fixedly connected to form the tube body 100.

[0067] The first tube section 200 and the second tube section 300 can be connected in a detachable manner, which makes the tube body 100 easy to maintain. Specifically, the inner wall of one end of the first tube section 200 can be provided with an internal thread, and the outer wall of one end of the second tube section 300 can be provided with an external thread. The internal thread and the external thread cooperate so that one end of the first tube section 200 fits inside one end of the second tube section 300.

[0068] Of course, the first tube section 200 and the second tube section 300 can also be fixedly connected by welding or other methods. Such a setting can make the connection between the first tube section 200 and the second tube section 300 more stable and reliable, thereby improving the airtightness of the tube body 100.

[0069] In some embodiments, the gas passage 210 described above may also adopt a reduced structure. Specifically, in the direction from the gas inlet 110 to the premixing passage 230, the inner diameter of the gas passage 210 may be set to gradually decrease, so that the gas entering the gas passage 210 can also pass through the gas passage 210 more quickly, so that the gas can enter the premixing passage 230 more quickly.

[0070] Example 2

[0071] Based on the gas nozzle described above, this application also proposes a gas stove, including the gas nozzle described above. The gas nozzle can be configured to communicate with the burner head of the gas stove. Specifically, the gas stove has an air inlet, and a mixing outlet 312 is located on the pipe body 100 at the end of the mixing channel 310 inside the pipe body 100. The mixing outlet 312 on the pipe body 100 is connected to the air inlet of the gas stove, and the gas inlet 110 on the pipe body 100 is connected to the gas pipe. The gas pipe inputs gas into the gas channel 210 through the gas inlet 110, and air into the air channel 220 through the air inlet 120. Both the gas channel 210 and the air channel 220 are connected to the premixing channel 230, allowing the gas and air to mix within the premixing channel 230. The mixed gas then enters the burner head of the gas stove through the mixing channel 310, where an ignition device ignites the mixed gas, causing it to burn.

[0072] The outer wall of the gas mixing outlet 312 on the pipe body 100 can be provided with external threads, and the gas inlet of the gas stove can be provided with internal threads, so that the pipe body 100 can be fixedly installed on the gas stove.

[0073] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

Claims

1. A gas nozzle, characterized in that, Includes tube body (100), The pipe body (100) has a gas passage (210), an air passage (220), a premixing passage (230) and a mixing passage (310). The surface of the pipe body (100) is provided with a gas inlet (110) communicating with the gas passage (210) and an air inlet (120) communicating with the air passage (220). The gas passage (210) and the air passage (220) are connected to the mixing passage (310) through the premixing passage (230), and the air passage (220) is transitionally connected to the inner wall of the premixing passage (230); A transition section (240) is provided between the air channel (220) and the premix channel (230), and the transition section (240) bends or curves toward the extension direction of the premix channel (230); the extension direction of the transition section (240) forms an angle with the extension direction of the air channel (220).

2. The gas nozzle according to claim 1, characterized in that, The inner wall of the transition section (240) is at least one of an inclined surface, an arc surface, a multi-segment inclined surface, and a multi-segment arc surface.

3. The gas nozzle according to claim 1, characterized in that, The gas passage (210), the premixing passage (230) and the mixing passage (310) extend through the pipe body (100) along the axial direction. The air inlet (120) is located on the side wall of the pipe body (100). The air passage (220) extends from the side wall of the pipe body (100) to communicate with the premixing passage (230).

4. The gas nozzle according to claim 3, characterized in that, The axial direction of the air passage (220) is the same as the radial direction of the tube body (100).

5. The gas nozzle according to claim 1, characterized in that, The mixing channel (310) has a mixing inlet end (311) and a mixing outlet end (312) with opposite mixing inlet end (311). The mixing inlet end (311) is connected to the premixing channel (230). The inner diameter of the mixing channel (310) gradually decreases in the direction from the mixing inlet end (311) to the mixing outlet end (312).

6. The gas nozzle according to claim 1, characterized in that, The number of air inlets (120) is multiple, and the multiple air inlets (120) are distributed circumferentially along the pipe body (100).

7. The gas nozzle according to claim 1, characterized in that, The pipe body (100) includes a first pipe section (200) and a second pipe section (300), the first pipe section (200) and the second pipe section (300) are detachably connected, the mixing channel (310) is disposed in the second pipe section (300), and the gas channel (210), the air channel (220) and the premixing channel (230) are all disposed in the first pipe section (200).

8. The gas nozzle according to claim 1, characterized in that, In the direction from the gas inlet (110) to the premixed channel (230), the inner diameter of the gas channel (210) gradually decreases.

9. A gas stove, characterized in that, Including the gas nozzle as described in any one of claims 1-8.

Images