Gas stove

Abstract

The present application relates to the field of gas stove, provide a kind of gas supply assembly and contain its gas stove, the gas stove includes burner, ejector pipe and gas supply assembly, gas supply assembly includes gas nozzle, air blowing device, air blowing device has with gas source communication air outlet chamber, air outlet chamber is formed in the surface of air blowing device air blowing outlet, air outlet chamber and air blowing outlet are arranged at the outside of at least one gas nozzle;Air outlet chamber includes the contraction section extending to air blowing outlet, along the air blowing direction, the cross section of contraction section gradually decreases, so that contraction section is tapered, improve air blowing outlet speed, so that air flow is smooth, so that gas and air mix more evenly;The air blowing direction of air blowing outlet is towards the gas direction of gas outlet, and the included angle of air blowing direction and gas direction is acute, so that the air blown by air blowing is towards gas and collides with gas to mix, so as to improve the uniformity of air and gas mixing, can make gas combustion more fully.

Description

Technical Field

[0001] This invention relates to the field of gas stoves, and more particularly to a gas supply component and a gas stove comprising the same. Background Technology

[0002] Most existing gas stoves use atmospheric burners. Atmospheric burners require a large amount of air for combustion, and a blower is usually installed to blow air into the burner to ensure complete combustion. However, the air and gas are not mixed evenly, resulting in incomplete combustion of some gas and the heat from some combustion being carried away by excess air, leading to poor utilization of energy and thus poor combustion performance. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the defect of poor gas combustion performance in gas stoves in the prior art, and to provide a gas supply component and a gas stove including the component.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] A gas supply assembly, comprising:

[0006] Gas nozzle;

[0007] A blower device having an outlet chamber connected to a gas source, the outlet chamber forming an outlet on the surface of the blower device, the outlet chamber and the outlet being disposed outside the gas outlet of at least one of the gas nozzles;

[0008] The air outlet chamber includes a constriction section extending to the blower outlet. Along the blower direction of the blower device, the cross-section of the air outlet chamber gradually decreases at the constriction section. The blower direction of the blower outlet faces the gas direction of the gas outlet, and the angle between the blower direction of the blower outlet and the gas direction is an acute angle.

[0009] In this design, the contraction section extends to the blower outlet, meaning the blower outlet is formed at the outlet of the contraction section. Along the blower direction of the blower, the cross-section of the chamber at the contraction section gradually decreases, making the contraction section of the outlet chamber gradually narrower. This increases the outlet velocity, ensuring smoother outlet flow and allowing for more uniform mixing of fuel gas and air, resulting in more complete combustion.

[0010] The direction of the blower at the blower outlet indicates the direction of the blower outlet, and the direction of the gas indicates the direction of the gas outlet. The direction of the blower at the blower outlet is towards the direction of the gas outlet with an acute angle, so that the air blown out of the blower outlet is directed towards the gas sprayed out of the gas outlet and collides with the gas to mix, thereby improving the uniformity of the air-gas mixture and making the gas burn more completely.

[0011] Preferably, the blower outlet and / or the gas outlet chamber are symmetrical about the center of the gas outlet.

[0012] In this scheme, the air velocity components perpendicular to the gas direction cancel each other out. On the one hand, this allows the air and gas mixture to maintain a high degree of concentration and a high degree of concentricity with the gas outlet, which facilitates injection.

[0013] Preferably, the blower outlet is annular.

[0014] In this design, the air is arranged in a 360° circle around the gas ejected from the corresponding gas nozzle. Firstly, this arrangement ensures that the air, after flowing out of the blower outlet, surrounds the gas ejected from the nozzle in a 360° manner, allowing for multi-angle mixing and thorough mixing. Secondly, the air and gas mixture maintains a high degree of concentricity with the gas outlet, guaranteeing a sufficiently good ejection effect. Thirdly, when improving ejection efficiency through blowing, the annular shape of the blower outlet further enhances ejection efficiency. Fourthly, compared to other shapes, setting the blower outlet and / or exhaust chamber to an annular shape facilitates manufacturing.

[0015] Preferably, the air outlet chamber includes a spiral section along the blowing direction of the blower, the spiral section is located upstream of the contraction section, and the cross-section of the air outlet chamber at the spiral section is spiral-shaped.

[0016] In this design, the spiral section is located upstream of the contraction section; that is, the inlet of the spiral section is upstream of the inlet of the contraction section, and the outlet of the spiral section is upstream of the outlet of the contraction section. Positioning the spiral section upstream of the contraction section serves two purposes: firstly, it allows the air to have a velocity component that is not parallel to the blower outlet's direction, facilitating further improvement in the uniformity of the air-fuel mixture; secondly, the spiral section's location upstream of the blower outlet, at a certain distance, allows the air to form an annular airflow upstream of the blower outlet after passing through the spiral section before exiting the blower outlet, thus surrounding the fuel gas and improving the uniformity of the fuel-air mixture.

[0017] Preferably, the minimum distance between the spiral section and the blower outlet is greater than or equal to 1 mm.

[0018] In this design, the spiral section does not extend to the blower outlet of the exhaust chamber, maintaining a certain distance from it. This arrangement facilitates the formation of a ring-shaped airflow upstream of the blower outlet after the air flows through the spiral section, thus surrounding the combustion gas and improving the uniformity of the gas-air mixture. The minimum distance between the spiral section and the blower outlet is greater than or equal to 1 mm, which reduces the velocity component of the air ejected from the blower outlet that is not parallel to the blower direction. This ensures a higher degree of concentration after the air and combustion gas mixture is mixed, facilitating injection.

[0019] Preferably, the angle between the tangential direction of the spiral segment and the radial direction of the gas nozzle is between 30° and 60°.

[0020] In this design, the angle between the tangential direction of the spiral section and the radial direction of the gas nozzle is between 30° and 60°. Firstly, a sufficiently large angle allows the air to generate a sufficiently large velocity component perpendicular to the radial direction of the gas nozzle as it moves from the spiral section to the blower outlet, so that an annular airflow can be formed upstream of the blower outlet before flowing out from the blower outlet, thus enveloping the gas in an annular shape. Secondly, a sufficiently large angle ensures that the velocity component of the air ejected from the blower outlet that is not parallel to the blower outlet direction is sufficiently large, thereby facilitating thorough mixing of air and gas. Thirdly, a sufficiently small angle ensures that the velocity component of the air ejected from the blower outlet that is not parallel to the blower outlet direction is sufficiently small, so that the air and gas mixture maintains a high degree of concentration, facilitating injection.

[0021] Preferably, a spiral block is provided in the air outlet chamber to form the spiral segment.

[0022] In this design, it is easier to machine the spiral segment on the outer surface of the structure than on the inner surface. By setting spiral blocks to form the spiral segment, the machining of the air outlet chamber is simple and convenient.

[0023] Preferably, there are multiple air outlet chambers, and the number of spiral blocks in one air outlet chamber is greater than the number of spiral blocks in another air outlet chamber, so that the air output of one air outlet chamber is less than the air output of the other air outlet chamber.

[0024] In this design, the cross-sectional size of the airflow channel within the outlet chamber is reduced by increasing the number of spiral blocks, thereby decreasing the air output. By setting up multiple outlet chambers with different output volumes, the air output volume of each outlet chamber is matched to the combustion power of the corresponding burner when the gas supply assembly blows air to multiple burners with different combustion powers.

[0025] Preferably, the blower further includes a nozzle mounting base, on which the gas nozzle is mounted, and at least a portion of the outer peripheral surface of the gas nozzle and the inner peripheral surface of the mounting hole on the nozzle mounting base are clearance-fitted to form the gas outlet chamber;

[0026] The spiral block is disposed on the outer peripheral surface of the gas nozzle corresponding to the gas outlet chamber.

[0027] In this design, the gas nozzle and nozzle mounting base are fitted with a clearance to form an outlet chamber, resulting in a compact gas supply assembly structure. The spiral block is located on the outer circumferential surface of the gas nozzle, facilitating the machining of the spiral section.

[0028] Preferably, the blower further includes a nozzle mounting base, on which the gas nozzle is mounted, and at least a portion of the outer peripheral surface of the gas nozzle and the inner peripheral surface of the mounting hole on the nozzle mounting base are clearance-fitted to form the gas outlet chamber;

[0029] The spiral block and the gas nozzle corresponding to the gas outlet chamber are integrally formed.

[0030] In this design, the gas nozzle and nozzle mounting base are fitted with a clearance to form an outlet chamber, resulting in a compact gas supply assembly structure. The spiral block and gas nozzle are integrally molded, facilitating the machining of the spiral section.

[0031] Preferably, at least a portion of the gas source and the gas outlet chamber are connected through a blower channel. The blower device further includes a nozzle mounting seat, the gas nozzle is mounted on the nozzle mounting seat, at least a portion of the blower channel is formed within the nozzle mounting seat, and at least a portion of the gas nozzle and the nozzle mounting seat are clearance-fitted to form the corresponding gas outlet chamber.

[0032] In this design, the structure is made compact.

[0033] A gas stove, comprising:

[0034] Gas supply components as described in any of the above technical solutions;

[0035] Burner;

[0036] An ejector tube is provided, with the gas outlet facing one end of the ejector tube, and the other end of the ejector tube is connected to the burner.

[0037] In this scheme, a gas supply system that uniformly mixes natural gas and forced air is adopted, so that the natural gas can be fully burned in the burner.

[0038] Preferably, the intersection of the blower outlet direction and the gas flow direction is located upstream of the throat of the ejector tube;

[0039] And / or, the intersection of the blower outlet direction and the gas flow direction is located downstream of the inlet end face of the ejector tube.

[0040] In this design, the air and fuel gas from the blower collide at the front end of the ejector tube to mix more thoroughly.

[0041] Preferably, the burner includes a first burner and a second burner, the combustion power of the first burner is less than the combustion power of the second burner, and the area of ​​the air outlet corresponding to the first burner is less than the area of ​​the air outlet corresponding to the second burner.

[0042] In this design, the average inner diameter refers to the average value of the inner diameters. This setting ensures that the air volume is matched to the burner's power.

[0043] Preferably, the minimum inner diameter of the blower outlets corresponding to the first burner and the second burner is the same;

[0044] The width of the air outlet corresponding to the first burner is between 0.5 mm and 2 mm, and / or the width of the air outlet corresponding to the second burner is greater than or equal to 1.5 mm.

[0045] In this design, the minimum inner diameter of the air outlets corresponding to the first and second burners is the same, facilitating the use of the same gas nozzles for both burners. The width of the air outlet corresponding to the first burner is between 0.5mm and 2mm. This avoids the situation where an excessively narrow air outlet would result in high air resistance, insufficient airflow, and incomplete combustion; conversely, an excessively wide air outlet would lead to excessive airflow, unstable flame, or low heat utilization due to excess air carrying a large amount of heat. The width of the air outlet corresponding to the second burner is greater than or equal to 1.5mm, ensuring a sufficiently large airflow.

[0046] Preferably, the burner includes an infrared burner and an atmospheric burner, wherein the inlet of the ejector tube corresponding to the atmospheric burner faces the blower outlet, and the inlet of the ejector tube corresponding to the infrared burner is isolated from the blower outlet.

[0047] In this design, air is blown only into the atmospheric burner, avoiding airflow into the infrared burner. Preventing airflow into the infrared burner avoids overheating, which could lead to structural deformation and reduced lifespan, excessive heat transfer resulting in high heat dissipation and low utilization, and the transfer of large amounts of heat to other structures, thus preventing equipment failure.

[0048] Preferably, the atmospheric burner includes a first burner and a second burner, the combustion power of the first burner is less than the combustion power of the second burner, the first burner is disposed inside the infrared burner, and the second burner is disposed outside the infrared burner.

[0049] In this design, the infrared burner is configured to supply air to the first and second burners, thereby ensuring more complete combustion of the gas in both burners.

[0050] The positive and progressive effects of this invention are as follows:

[0051] By setting the cross-section of the outlet chamber to gradually decrease in the contraction section along the blowing direction of the blower, the outlet chamber becomes gradually narrowed in the contraction section, which can improve the blowing speed. On the one hand, this makes the air flow smoother; on the other hand, it can make the gas and air mix more evenly, and make the gas combustion more complete.

[0052] By setting the blower outlet to face the gas direction with an acute angle, the air blown out of the blower outlet is directed toward the gas outlet and collides with the gas to mix, thereby improving the uniformity of the air-gas mixture and making the gas burn more completely. Attached Figure Description

[0053] Figure 1 This is a top view of the gas stove provided in Embodiment 1 of the present invention;

[0054] Figure 2 This is a partial structural schematic diagram of the gas stove provided in Embodiment 1 of the present invention;

[0055] Figure 3 for Figure 2 The sectional view corresponding to the middle structure;

[0056] Figure 4 for Figure 3 Enlarged view of a portion of the image;

[0057] Figure 5 for Figure 3 Enlarged view of a portion of the image;

[0058] Figure 6 This is a schematic diagram of the nozzle mounting base and gas nozzle provided in Embodiment 1 of the present invention;

[0059] Figure 7 for Figure 6 Side view of the middle structure;

[0060] Figure 8 for Figure 7 Enlarged view of a portion of the image;

[0061] Figure 9This is a schematic diagram of the structure of the second mounting base and the gas nozzle in Embodiment 2 of the present invention;

[0062] Figure 10 for Figure 9 Side view of the middle structure;

[0063] Figure 11 for Figure 10 Enlarged view of a portion of the image;

[0064] Figure 12 This is a schematic diagram of the nozzle mounting base and gas nozzle according to Embodiment 2 of the present invention;

[0065] Figure 13 for Figure 12 The sectional view corresponding to the middle structure;

[0066] Figure 14 for Figure 13 Enlarged view of a portion of the image.

[0067] Explanation of reference numerals in the attached figures:

[0068] Gas stove 1000;

[0069] Gas nozzle 1, inner ring nozzle 11, middle ring nozzle 12, outer ring nozzle 13;

[0070] Nozzle mounting base 2, first mounting base 21, second mounting base 22, blower channel 23, air outlet chamber 24;

[0071] Blower 3;

[0072] Burner 4, inner ring burner 41, middle ring burner 42, outer ring burner 43;

[0073] ejector tube 5, inner ring ejector tube 51, middle ring ejector tube 52, outer ring ejector tube 53. Detailed Implementation

[0074] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0075] Example 1

[0076] This embodiment provides a gas stove 1000. Figures 1-8 This is a schematic diagram of the structure provided in this embodiment.

[0077] like Figure 1The gas stove 1000 includes a burner 4, an injector tube 5, and a gas supply assembly. The burner 4 includes an inner ring burner 41 (first burner), a middle ring burner 42, and an outer ring burner 43 (second burner), with the combustion power of these three burners increasing sequentially. The injector tube 5 includes an inner ring injector tube 51, a middle ring injector tube 52, and an outer ring injector tube 53. The gas supply assembly includes a blower and a gas nozzle 1. The gas nozzle 1 includes an inner ring nozzle 11, a middle ring nozzle 12, and an outer ring nozzle 13. The nozzle outlet of the inner ring nozzle 11 faces the inlet of the inner ring injector tube 51, and the outlet of the inner ring injector tube 51 is connected to the inner ring burner 41. The nozzle outlet of the middle ring nozzle 12 faces the inlet of the middle ring injector tube 52, and the outlet of the middle ring injector tube 52 is connected to the middle ring burner 42. The nozzle outlet of the outer ring nozzle 13 faces the inlet of the outer ring injector tube 53, and the outlet of the outer ring injector tube 53 is connected to the outer ring burner 43.

[0078] like Figures 2-5 The blower has an outlet chamber 24 connected to the gas source. The outlet chamber 24 forms a blower outlet on the surface of the blower. When blowing, air enters the outlet chamber 24 from the gas source and flows out from the blower outlet. The outlet chamber 24 and the blower outlet are set to correspond to the gas nozzle 1 to blow air for the burner.

[0079] In this embodiment, the inner ring burner 41 and outer ring burner 43 are atmospheric burners, and the middle ring burner 42 is an infrared burner. The blower blows air onto the inner ring burner 41 and outer ring burner 43, but not onto the middle ring burner 42. Not blowing air onto the infrared burner avoids excessively high temperatures that could cause structural deformation and reduce its lifespan, prevents excessively rapid heat transfer leading to high heat dissipation and low utilization, and prevents a large amount of heat from being transferred to other structures, causing equipment failure. In other embodiments, the type and number of burners can be flexibly selected according to the combustion requirements of the gas stove 1000, and correspondingly, the decision of whether to blow air onto a particular burner can be flexibly made.

[0080] like Figure 5 The exhaust chamber 24 includes a converging section extending to the blower outlet, meaning the blower outlet is formed at the outlet of the converging section. Along the blower direction of the blower, the cross-section of the exhaust chamber 24 gradually decreases at the converging section, making the exhaust chamber 24 gradually narrowing at the converging section. This increases the exhaust velocity, making the exhaust smoother and allowing for more uniform mixing of fuel gas and air, resulting in more complete combustion.

[0081] like Figure 3 ,like Figure 5There are two exhaust chambers 24, one of which is located corresponding to the inner ring nozzle 11. The exhaust chamber 24 and its blower outlet are located outside the gas outlet of the inner ring nozzle 11, providing airflow to the inner ring burner 41. Specifically, the gas direction (direction towards the center of the gas outlet) of the inner ring nozzle 11 is A1, and the blower direction (direction towards the center of the blower outlet) of the exhaust chamber 24 is B1. B1 faces A1, and the angle between B1 and A1 is acute. This ensures that when airflow is applied to the inner ring burner 41, the air flowing out of the exhaust chamber 24 collides with the gas ejected from the inner ring nozzle 11, mixing thoroughly. This facilitates more complete combustion of the gas at the inner ring burner 41, improving combustion efficiency. Both B1 and A1 face the inlet of the inner ring injector 51, allowing the air and gas to mix at the inlet of the inner ring injector 51.

[0082] Another exhaust chamber 24 is provided corresponding to the outer ring nozzle 13. This exhaust chamber 24 and its blower outlet are located outside the gas outlet of the outer ring nozzle 13, providing airflow to the outer ring burner 43. Specifically, the gas direction of the gas outlet of the outer ring nozzle 13 is A3, and the blower direction of the corresponding blower outlet of the exhaust chamber 24 is B3, with B3 facing A3. The angle between B3 and A3 is acute, ensuring thorough mixing of the gas ejected from the outer ring nozzle 13 with the air, resulting in complete combustion in the outer ring burner 43. Both B3 and A3 face the inlet of the outer ring injector 53, allowing the air and gas to mix at the inlet of the outer ring injector 53.

[0083] In this embodiment, the exhaust chamber 24 and the blower outlet are symmetrical about the corresponding gas outlet center, which facilitates the mutual cancellation of the velocity components of the air perpendicular to the gas direction. On the one hand, this allows the air and gas mixture to maintain a high degree of concentration and a high degree of concentricity with the gas outlet, thus facilitating injection. To make the exhaust chamber 24 and the blower outlet symmetrical about the corresponding gas outlet center, the exhaust chamber 24 and / or the blower outlet can be set as an annular shape, or arranged symmetrically with respect to multiple arcs about the gas outlet center, but is not limited to. In other embodiments, only the constriction section of the exhaust chamber 24 and the blower outlet may be symmetrical about the center of the corresponding gas outlet. In this embodiment, both the exhaust chamber 24 and the blower outlet are annular and concentric with the gas outlet, surrounding the gas outlet of the corresponding gas nozzle 1 360°. Firstly, this allows the air flowing out of the blower outlet to surround the gas ejected from the gas nozzle 1 360°, so that the air and gas mix at multiple angles, resulting in thorough mixing. Secondly, this allows the air and gas to maintain a high degree of concentricity with the gas outlet after mixing, ensuring a sufficiently good ejection effect. Thirdly, in this embodiment, the ejection efficiency is improved by blowing air, and the annular shape of the blower outlet makes the ejection more efficient. Fourthly, compared to other shapes, setting the blower outlet and / or exhaust chamber 24 as annular facilitates processing and manufacturing.

[0084] In this embodiment, the portion between the gas source and the gas outlet chamber 24 is connected through the blower channel 23. The gas supply assembly also includes a nozzle mounting seat 2. The gas nozzle 1 is mounted on the nozzle mounting seat 2. The blower channel 23 is formed inside the nozzle mounting seat 2. The outer peripheral surface of the inner ring nozzle 11 and the inner peripheral surface of the mounting hole on the nozzle mounting seat 2 are fitted with a clearance to form a gas outlet chamber 24. The outer peripheral surface of the outer ring nozzle 13 and the inner peripheral surface of the mounting hole on the nozzle mounting seat 2 are fitted with a clearance to form another gas outlet chamber 24. The middle ring nozzle 12 and the nozzle mounting seat 2 are sealed together to isolate the blower outlet of the blower channel 23, so that when the inner ring burner 41 and the outer ring burner 43 are blown, the middle ring burner 42 is not blown.

[0085] Specifically, the nozzle mounting base 2 includes a first mounting base 21 and a second mounting base 22. One end of the gas nozzle 1 is fixed to the second mounting base 22, and the other end passes through the first mounting base 21. Two gas outlet chambers 24 are formed on the first mounting base 21. The facing surfaces of the first mounting base 21 and the second mounting base 22 together define the blower channel 23. The first mounting base 21 and the second mounting base 22 can be detachably connected by means of, but not limited to, screw connection, snap-fit ​​connection, etc. This facilitates the formation of the blower channel 23 and makes it easy to clean and maintain the first mounting base 21 and the second mounting base 22 after disassembly.

[0086] In this embodiment, the air source is the atmospheric environment. The blower device includes a blower 3, the inlet of which is connected to the external environment to connect with the atmospheric environment, and the outlet of the blower 3 faces the inlet of the blower channel 23. During blower operation, air is drawn from the atmospheric environment into the blower 3, and then sequentially passes through the blower channel 23, the air outlet chamber 24, the inner ring ejector tube 51 and the inner ring burner 41, or the outer ring ejector tube 53 and the outer ring burner 43.

[0087] like Figures 5-8 In this embodiment, the minimum inner diameter of the air outlet of the air chamber 24 at both the inner ring nozzle 11 and the outer ring nozzle 13 is D1; ​​for example Figures 6-8 The outer diameter of the heads of the inner ring nozzle 11 and the outer ring nozzle 13 is D2. Specifically, as shown... Figure 6 , Figure 7Each gas nozzle has a hexagonal prism head, and the outer diameter of the nozzle head is the diameter of the corresponding circumscribed circle. The width of the air outlet at the inner ring nozzle 11 (the width along the direction perpendicular to the airflow direction, i.e., the width along the direction perpendicular to B1) is 1 mm, and the width of the air outlet at the outer ring nozzle 13 (the width along the direction perpendicular to the airflow direction, i.e., the width along the direction perpendicular to B3) is 2 mm. This ensures that the airflow at the air outlet of the inner ring nozzle 11 is less than the airflow at the air outlet of the outer ring nozzle 13, so that the airflow is matched with the combustion power of the inner ring burner 41 and the outer ring burner 43. In other embodiments, the size of the blower outlet can be adjusted to change the blower volume according to the combustion power of the burner. For example, the width of the blower outlet at the inner ring nozzle 11 can be set to 0.5 mm and the width of the blower outlet at the outer ring nozzle 13 can be set to 1.5 mm; for example, the width of the blower outlet at the inner ring nozzle 11 can be set to 2 mm and the width of the blower outlet at the outer ring nozzle 13 can be set to 3 mm.

[0088] like Figure 5 The gas direction corresponding to the inner ring nozzle 11 is A1, and the air blowing direction at the blower outlet of the inner ring nozzle 11 is B1. The intersection of A1 and B1 is P1, which is located between the end face of the inlet of the inner ring ejector tube 51 and the throat. On the one hand, this allows the air and gas flowing out of the blower outlet to collide upstream of the throat of the inner ring ejector tube 51. The cross-sectional area of ​​the chamber upstream of the throat is large, which facilitates thorough mixing of air and gas. On the other hand, it allows the air and gas flowing out of the blower outlet to collide downstream of the end face of the inlet of the inner ring ejector tube 51. That is, it allows the gas and air to collide after entering the ejector tube, which facilitates the high concentricity between the gas and air after mixing and the ejector tube, so as to facilitate ejection by the inner ring ejector tube 51. When designing the included angle of A1 and B1, it can be adjusted according to the inner diameter and width of the blower outlet of the gas outlet chamber 24 at the inner ring nozzle 11 and the distance L from the end face of the blower outlet to P1. In this embodiment, L is 15mm.

[0089] like Figure 5The gas direction corresponding to the outer ring nozzle 13 is A3, and the blowing direction of the blower outlet at the outer ring nozzle 13 is B3. The intersection of A3 and B3 is P3, which is located between the end face of the inlet of the outer ring ejector tube 53 and the throat. On the one hand, this allows the air and gas flowing out of the blower outlet to collide upstream of the throat of the outer ring ejector tube 53. The cross-sectional area of ​​the chamber upstream of the throat is large, which facilitates thorough mixing of air and gas. On the other hand, it allows the air and gas flowing out of the blower outlet to collide downstream of the end face of the inlet of the outer ring ejector tube 53. That is, it allows the gas and air to collide after entering the ejector tube, which facilitates the high concentricity of the gas and air after mixing with the ejector tube, so as to facilitate ejection by the outer ring ejector tube 53. When designing the included angle of A3 and B3, it can be adjusted according to the inner diameter and width of the blower outlet of the gas outlet chamber 24 at the outer ring nozzle 13 and the distance from the end face of the blower outlet to P3. In this embodiment, this distance is equal to L.

[0090] In this embodiment, the structural dimensions of each gas nozzle are consistent, resulting in a simple gas stove structure. In other embodiments, different gas nozzles can be used according to the gas injection requirements or the size requirements of the gas outlet chamber. For example, different gas nozzles can be used to correspond to atmospheric burners and infrared burners; for example, different gas nozzles can be used to correspond to inner ring nozzles and outer ring nozzles.

[0091] Example 2

[0092] This embodiment provides a gas supply component. Figures 9-14 This is a schematic diagram of the structure provided in this embodiment. The main difference between the gas supply assembly in this embodiment and that in Embodiment 1 is the gas nozzle 1 and the gas outlet chamber 24. Other structures of the gas supply assembly can be referred to in Embodiment 1.

[0093] like Figures 9-12 The inner ring nozzle 11 and the outer ring nozzle 13 are respectively fitted with the mounting holes on the first mounting base 21 to form an exhaust chamber 24. The exhaust chamber 24 forms a blower outlet on the surface of the first mounting base 21. The exhaust chamber includes a converging section extending to the blower outlet (the converging section can be referred to in Embodiment 1). The outer surfaces of the inner ring nozzle 11 and the outer ring nozzle 13 of the gas nozzle 1 are provided with helical blocks. The outer surface of the helical blocks and the mounting holes on the first mounting base 21 are fitted to form a helical section of the exhaust chamber 24. The cross-section of the chamber 24 at the helical section is helical.

[0094] By setting the air outlet chamber 24 to have a spiral section, the air can have a velocity component that is not parallel to the blower outlet direction, which facilitates further improvement in the uniformity of air and gas mixing.

[0095] The spiral section is located upstream of the contraction section; that is, the inlet of the spiral section is upstream of the inlet of the contraction section, and the outlet of the spiral section is upstream of the outlet (blower outlet) of the contraction section. This upstream location of the spiral section's outlet facilitates the formation of an annular airflow upstream of the blower outlet after the air flows through the spiral section, thus surrounding the combustion gas and improving the uniformity of the gas-air mixture. Specifically, in this embodiment, the spiral section of the outlet chamber 24 corresponding to the inner ring nozzle 11 partially overlaps with the contraction section, while the spiral section of the outlet chamber 24 corresponding to the outer ring nozzle 13 is completely outside the contraction section.

[0096] The distance between the spiral section and the blower outlet is consistent with the length of the chamfer at the tip of the corresponding gas nozzle 1. This design facilitates machining. Specifically, for example... Figure 14 The minimum distance d between the spiral section of the outlet chamber 24 corresponding to the outer ring nozzle 13 and the blower outlet is 1.5 mm in this embodiment. In other embodiments, the value of d can be flexibly adjusted according to other parameters of the blower outlet, such as the angle between the blower direction and the gas direction, and the inner diameter of the blower outlet. For example, d can be set to 1 mm or 2 mm. When d is greater than or equal to 1 mm, the velocity component of the air that is not parallel to the blower direction when it is ejected from the blower outlet can be reduced, so that the air and gas can maintain a high degree of concentration after mixing, which is convenient for injection. In this embodiment, the minimum distance between the spiral section of the outlet chamber 24 corresponding to the inner ring nozzle 11 and the blower outlet is consistent with that of the outlet chamber 24 at the outer ring nozzle 13, which facilitates the consistency of the processing steps of the outer ring nozzle 13 and the inner ring nozzle 11.

[0097] In this embodiment, the angle between the tangential direction of the spiral segment of the gas outlet chamber 24 and the radial direction of the gas nozzle is α (α see [reference]). Figure 11In this embodiment, the α values ​​at the inner and outer ring nozzles are equal, both being 50°. In other embodiments, the specific value of α can be flexibly adjusted according to other parameters of the gas outlet 24, such as the angle between the blowing direction and the gas direction at the blower outlet, the inner diameter of the blower outlet, d, etc. For example, α can be set to 30°, 60°, etc.; α can also be set to be unequal at different gas nozzles. When the angle between the tangential direction of the spiral section and the direction of the gas flow is between 30° and 60°, firstly, α is large enough to allow the air to form a velocity component perpendicular to the radial direction of the gas nozzle as it moves from the spiral section to the blower outlet. This allows an annular airflow to form upstream of the blower outlet before flowing out, thus enveloping the gas flow in an annular shape. Secondly, α is large enough to ensure that the velocity component of the air ejected from the blower outlet that is not parallel to the blower direction is large enough, thus facilitating thorough mixing of the air and gas. Thirdly, α is small enough to ensure that the velocity component of the air ejected from the blower outlet that is not parallel to the blower direction is small enough, so that the air and gas flow maintains a high degree of concentration after mixing, facilitating injection.

[0098] In this embodiment, the spiral block and the corresponding gas nozzle 1 are integrally formed. In other embodiments, the spiral block and the gas nozzle 1 can be formed separately and then connected together; or a separate spiral block can be directly installed in the nozzle mounting base 2 to simplify the structure of the gas nozzle 1. In other embodiments, a spiral channel can also be machined in the nozzle mounting base 2 to form the spiral segment of the gas outlet chamber 24.

[0099] Specifically, such as Figure 9 The inner ring nozzle 11 has 8 spiral blocks, and the outer ring nozzle 13 has 6 spiral blocks. By setting the number of spiral blocks on the inner ring nozzle 11 to be greater than the number of spiral blocks on the outer ring nozzle 13, the spiral blocks occupy a larger area of ​​the air outlet chamber 24, thereby reducing the area of ​​the air flow cross section in the air outlet chamber 24. As a result, the blowing volume of the air outlet chamber 24 at the inner ring nozzle 11 is less than the blowing volume of the air outlet chamber 24 at the outer ring nozzle 13.

[0100] In this embodiment, the head of the gas nozzle is hexagonal prism-shaped, the same as in Embodiment 1. Figure 9 , Figures 12-14 The structure of the gas nozzle head has been simplified.

[0101] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A gas stove, characterized in that, It includes a gas supply assembly, a burner, and an injector, wherein the gas supply assembly includes: Gas nozzle; A blower device having an outlet chamber connected to a gas source, the outlet chamber forming an outlet on the surface of the blower device, the outlet chamber and the outlet being disposed outside the gas outlet of at least one of the gas nozzles; The air outlet chamber includes a constriction section extending to the blower outlet. Along the blower direction of the blower device, the cross-sectional area of ​​the air outlet chamber gradually decreases at the constriction section. The blower direction of the blower outlet is toward the gas direction of the gas outlet, and the angle between the blower direction of the blower outlet and the gas direction is an acute angle. The gas outlet is located at one end of the ejector tube, and the other end of the ejector tube is connected to the burner; The burner includes an infrared burner and an atmospheric burner. The inlet of the ejector tube corresponding to the atmospheric burner faces the blower outlet, and the inlet of the ejector tube corresponding to the infrared burner is isolated from the blower outlet. The blower outlet faces the inlet of the corresponding ejector tube, and the intersection of the blower outlet's blower direction and the gas flow direction is located upstream of the throat of the ejector tube.

2. The gas stove as described in claim 1, characterized in that, The blower outlet and / or the gas outlet chamber are symmetrical about the center of the gas outlet.

3. The gas stove as described in claim 2, characterized in that, The blower outlet is annular.

4. The gas stove as described in claim 1, characterized in that, The air outlet chamber includes a spiral section. Along the blowing direction of the blower, the spiral section is located upstream of the contraction section, and the cross-section of the air outlet chamber at the spiral section is spiral-shaped.

5. The gas stove as described in claim 4, characterized in that, The minimum distance between the spiral section and the blower outlet is greater than or equal to 1 mm; And / or, the angle between the tangential direction of the helical segment and the radial direction of the gas nozzle is between 30° and 60°.

6. The gas stove as described in claim 4, characterized in that, The air outlet chamber is provided with a spiral block to form the spiral segment.

7. The gas stove as described in claim 6, characterized in that, The number of air outlet chambers is multiple, and the number of spiral blocks in one air outlet chamber is greater than the number of spiral blocks in another air outlet chamber, so that the air output of one air outlet chamber is less than the air output of the other air outlet chamber.

8. The gas stove as described in claim 1, characterized in that, At least a portion of the gas source and the gas outlet chamber are connected through a blower channel. The blower device also includes a nozzle mounting base. The gas nozzle is mounted on the nozzle mounting base. At least a portion of the blower channel is formed within the nozzle mounting base. At least a portion of the gas nozzle and the nozzle mounting base are clearance-fitted to form the corresponding gas outlet chamber.

9. The gas stove as described in claim 1, characterized in that, The intersection of the blower outlet's blower direction and the gas flow direction is located downstream of the inlet end face of the ejector tube.

10. The gas stove as described in claim 1, characterized in that, The atmospheric burner includes a first burner and a second burner. The combustion power of the first burner is less than that of the second burner, and the area of ​​the air outlet corresponding to the first burner is less than that of the air outlet corresponding to the second burner.

11. The gas stove as described in claim 10, characterized in that, The minimum inner diameter of the air outlets corresponding to the first burner and the second burner is the same, the width of the air outlet corresponding to the first burner is between 0.5 mm and 2 mm, and / or the width of the air outlet corresponding to the second burner is greater than or equal to 1.5 mm.

12. The gas stove as described in claim 1, characterized in that, The atmospheric burner includes a first burner and a second burner. The combustion power of the first burner is less than that of the second burner. The first burner is located inside the infrared burner, and the second burner is located outside the infrared burner.

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