Gas supply device and gas cooker

Abstract

The utility model relates to the technical field of kitchen utensils, and discloses a gas supply device and a gas cooker. The gas supply device comprises a gas distribution seat, the gas distribution seat is internally provided with a gas channel, one end of the gas channel is used for being communicated with a gas source, and the other end of the gas channel forms a gas outlet; one end of the first air channel is communicated with an air supply mechanism, and a first air outlet is formed in the other end; one end of the second air channel is communicated with the air supply mechanism, and a second air outlet is formed in the other end; the first air outlet is formed in the upper side of the fuel gas outlet, the distance between the center of the first air outlet and the horizontal central plane of the fuel gas outlet is D1, the second air outlet is formed in the lower side of the fuel gas outlet, the distance between the center of the second air outlet and the horizontal central plane is D2, and D1 is smaller than or equal to D2. Air provided by the gas supply device can relieve gas floating, and the gas distribution uniformity in the injection pipe and the gas and air mixing uniformity are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to a gas supply device and a gas cooker. Background Art

[0002] Gas stoves are kitchen cooking appliances that are frequently used in daily household life. Gas stoves include a burner and a gas nozzle. The nozzle is connected to the gas source and is used to inject high-speed gas into the ejector tube of the burner. The high-speed flowing gas reduces the air pressure in the ejector tube, and the external air naturally enters the ejector tube under the action of the pressure difference and mixes with the gas. This part of the air that enters from the ejector tube is called primary air. The amount of primary air supplied will affect the combustion efficiency and thus the energy efficiency level of the gas stove.

[0003] For some gas cookers with higher energy efficiency requirements, it is difficult to meet the combustion requirements by relying solely on naturally injected primary air. Therefore, in the prior art, some gas cookers are also equipped with a blower, which replenishes air into the injection pipe when the nozzle sprays gas into the injection pipe to ensure that there is enough primary air to mix with the gas.

[0004] However, when the gas stove is working, the temperature of the surrounding environment rises, and the temperature rise is more obvious the closer to the burner. High temperature will affect the flow direction of the gas, causing the gas to generate upward buoyancy. Under this influence, the trajectory of the gas will tilt upward to a certain extent, and the air will also tend to float upward, resulting in less air naturally injected above the center plane of the nozzle and more air naturally injected below the center plane of the nozzle, resulting in uneven gas distribution in the injection tube and uneven mixing of gas and air, which in turn leads to incomplete combustion of the burner and low energy efficiency level of the gas stove. Utility Model Content

[0005] The utility model aims to provide a gas supply device, the air provided by the gas supply device can alleviate the floating of the gas, improve the uniformity of the gas distribution in the ejector tube, and improve the uniformity of the mixing of the gas and the air.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The gas supply device comprises a gas distribution seat, wherein the gas distribution seat is provided with:

[0008] A gas channel, one end of which is used to communicate with a gas source and the other end of which forms a gas outlet;

[0009] A first air channel, one end of which is used to communicate with the air supply mechanism, and the other end of which forms a first air outlet;

[0010] A second air passage, one end of which is used to communicate with the air supply mechanism and the other end of which forms a second air outlet;

[0011] The first air outlet is arranged on the upper side of the gas outlet, and the distance between the center of the first air outlet and the horizontal center plane of the gas outlet is D1. The second air outlet is arranged on the lower side of the gas outlet, and the distance between the center of the second air outlet and the horizontal center plane is D2, and D1≤D2.

[0012] As an optional solution, the ratio of the distance D1 between the center of the first air outlet and the horizontal center plane of the gas outlet to the distance D2 between the center of the second air outlet and the horizontal center plane is 0.35-0.9.

[0013] As an optional solution, the cross-sectional area of ​​the first air outlet is S1, the cross-sectional area of ​​the second air outlet is S2, and S1≤S2.

[0014] As an optional solution, the ratio of the cross-sectional area S1 of the first air outlet to the cross-sectional area S2 of the second air outlet is 0.5-1.

[0015] As an optional solution, along the flow direction of the air, the cross-sectional area of ​​the first air channel gradually decreases; and / or

[0016] Along the flow direction of the air, the cross-sectional area of ​​the first air channel gradually increases.

[0017] As an optional solution, along the flow direction of the air, the axis of the first air channel is arranged to be inclined downward; and / or

[0018] Along the flow direction of the air, the axis of the second air channel is arranged to be inclined upward or horizontally.

[0019] As an optional solution, the angle between the axis of the first air channel and the horizontal direction is α1, the angle between the axis of the second air channel and the horizontal direction is α2, and α1≥α2.

[0020] As an optional solution, a communication cavity is further provided in the gas distribution seat, the inlet of the communication cavity is used to communicate with the air supply mechanism, and the inlet of the first air channel and the inlet of the second air channel are both connected to the communication cavity.

[0021] As an optional solution, the gas supply device further includes:

[0022] an air supply mechanism, wherein the inlet ends of the first air channel and the second air channel are both connected to the air supply mechanism; and / or

[0023] A nozzle is connected to the gas outlet, and the injection axis of the nozzle is arranged colinearly with the axis of the gas outlet.

[0024] Another object of the utility model is to provide a gas cooker, by providing the above-mentioned gas supply device, the mixing of air and gas is more uniform, and the combustion energy efficiency is high.

[0025] To achieve this purpose, the utility model adopts the following technical solutions:

[0026] The gas cooker comprises a burner and the gas supply device, wherein the burner comprises an ejector pipe, and the gas outlet, the first air outlet and the second air outlet are all opposite to the inlet of the ejector pipe.

[0027] The beneficial effects of the utility model are:

[0028] The gas supply device of the utility model provides a first air outlet and a second air outlet at the upper and lower sides of the gas outlet respectively, so that air is supplemented at the upper and lower sides of the gas outlet, thereby improving the mixing uniformity of air and gas; on the other hand, the air flowing out of the first air outlet has a downward pressure on the gas, and the air flowing out of the second air outlet has an upward push on the gas. By setting the distance D1 between the center of the first air outlet and the horizontal center plane P of the gas outlet to be smaller than the distance D2 between the center of the second air outlet and the horizontal center plane P, the downward pressure of the air on the gas is greater than the upward push on the gas, that is, the air as a whole has a downward pressure on the gas, thereby significantly alleviating the phenomenon of gas floating, making the gas distribution in the ejector pipe more uniform and the gas and air mixing more uniform, thereby improving the combustion efficiency of the burner.

[0029] The gas cooker of the utility model is provided with the gas supply device, so that the air and the gas are mixed more evenly and the combustion energy efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of a gas supply device provided in Embodiment 1 of the present utility model;

[0031] Figure 2 It is a structural schematic diagram of the burner base provided in the first embodiment of the utility model;

[0032] Figure 3 This is a schematic diagram of the structure of the gas cooker with the burner hidden provided by the first embodiment of the utility model;

[0033] Figure 4 yes Figure 3 The main view of the structure in;

[0034] Figure 5 yes Figure 4AA section view in;

[0035] Figure 6 It is a cross-sectional view taken along AA provided in the second embodiment of the present invention.

[0036] In the figure:

[0037] 10. Gas distribution seat; 11. Gas channel; 111. Gas inlet; 112. Gas outlet; 12. First air channel; 121. First air inlet; 122. First air outlet; 13. Second air channel; 131. Second air inlet; 132. Second air outlet; 14. Communication cavity;

[0038] 20. Burner; 21. Burner seat; 211. Burner body; 212. Ejector tube; 22. Fire cover assembly; 221. Inner ring fire cover; 222. Outer ring fire cover;

[0039] 30. Air supply mechanism;

[0040] 40. Nozzle. DETAILED DESCRIPTION

[0041] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0042] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0044] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0045] Embodiment 1

[0046] This embodiment provides a gas supply device and a gas cooker, such as Figure 1 As shown, the gas cooker includes a burner 20 and a gas supply device, the burner 20 includes a burner base 21 and a fire cover assembly 22, and the fire cover assembly 22 is covered on the burner base 21. The gas supply device is used to pass gas and air into the burner base 21, and the air and gas are mixed in the burner base 21 and then flow out from the fire hole of the fire cover assembly 22 and burn.

[0047] Specifically, Figure 1 and Figure 2 As shown, the burner seat 21 includes a burner body 211 and an ejector tube 212, a gas mixing channel is provided in the burner body 211, the ejector tube 212 is connected to the burner body 211 and communicated with the gas mixing channel, and the gas supply device is docked with the ejector tube 212 and supplies gas into the ejector tube 212. The fire cover assembly 22 is covered on the burner body 211. Optionally, the burner seat 21 can be integrally cast, or it can be assembled from two or more parts, which is not limited here. In this embodiment, two gas mixing channels are provided in the burner body 211, namely, an inner ring gas mixing channel and an outer ring gas mixing channel. Correspondingly, the burner seat 21 includes two ejector tubes 212, one ejector tube 212 is communicated with the inner ring gas mixing channel, and the other ejector tube 212 is communicated with the outer ring gas mixing channel. The fire cover assembly 22 includes an inner ring fire cover 221 and an outer ring fire cover 222. The fire holes on the inner ring fire cover 221 are connected to the inner ring gas mixing channel, and the fire holes on the outer ring fire cover 222 are connected to the outer ring gas mixing channel. In other embodiments, one, three or more gas mixing channels can also be set in the burner base 21, and the number of the ejector pipes 212 is consistent with the number of the gas mixing channels and is connected accordingly.

[0048] like Figure 1 , Figure 3 , Figure 4As shown, the gas supply device includes a gas distribution seat 10 and an air supply mechanism 30. An air channel and a gas channel 11 are provided in the gas distribution seat 10. The gas channel 11 includes a gas inlet 111 and a gas outlet 112. The gas inlet 111 is used to communicate with an external gas source, and the gas outlet 112 is opposite to the inlet of the ejector tube 212. The air supply mechanism 30 is connected to the inlet of the air channel, and the outlet of the air channel is opposite to the inlet of the ejector tube 212. In the gas cooker of this embodiment, when the gas channel 11 passes air into the ejector tube 212, the air supply mechanism 30 can replenish primary air into the ejector tube 212, thereby improving the energy efficiency of the gas cooker.

[0049] In this embodiment, a nozzle 40 is installed at the gas outlet 112, and the nozzle 40 enables the gas to be sprayed into the ejector tube 212 at a high speed. The nozzle 40 is an existing component, and its specific structure is not repeated. The injection axis of the nozzle 40 is arranged colinearly with the axis at the gas outlet 112. The ejector tube 212 is provided with a first opening, a second opening and a third opening connected to the inside of the ejector tube 212 on the end surface facing the gas distribution seat 10, wherein the first opening is opposite to the nozzle 40, the second opening is opposite to the outlet of the air channel, and the third opening is connected to the external atmosphere. When the nozzle 40 sprays gas, the air can be supplemented into the ejector tube 212 by the air supply mechanism 30, and the air can also be supplemented by natural injection. Optionally, the air supply mechanism 30 can be a blower. In other embodiments, the air supply mechanism 30 can also be other structures that can provide positive pressure gas, which is not limited here.

[0050] In this embodiment, two gas channels 11 are provided in the gas distribution seat 10, and the two gas channels 11 are respectively connected to the two ejector tubes 212. Correspondingly, each gas channel 11 is configured with a group of air channels. It can be understood that the specific number of gas channels 11 and air channels can be kept corresponding to the number of ejector tubes 212.

[0051] In order to ensure that the gas channel 11 and the air channel are accurately connected to the ejector tube 212, the gas distribution seat 10 and the burner seat 21 can be fixed together by fasteners. Of course, in other embodiments, other structures can also be used to indirectly fix the position of the gas distribution seat 10 and the burner seat 21. Optionally, the gas distribution seat 10 can be integrally formed or assembled from two or more parts, which is not specifically limited here.

[0052] When the gas cooker is working, the temperature of the surrounding environment rises, and the temperature rise is more obvious the closer to the burner 20. High temperature will affect the flow direction of the gas, causing the gas to generate upward buoyancy. Under this influence, the trajectory of the gas in the ejector tube 212 will be tilted upward to a certain extent, and the air will also have a tendency to float upward, resulting in a small amount of air naturally ejected above the center plane of the nozzle 40 and a large amount of air naturally ejected below the center plane of the nozzle 40, resulting in uneven gas distribution in the ejector tube 212 and uneven mixing of gas and air, which in turn leads to incomplete combustion of the burner 20 and a low energy efficiency level of the gas cooker.

[0053] In this regard, Figure 3-Figure 5 As shown, the air channel of the gas distribution seat 10 includes a first air channel 12 and a second air channel 13. The first air channel 12 includes a first air inlet 121 and a first air outlet 122, and the second air channel 13 includes a second air inlet 131 and a second air outlet 132. The first air inlet 121 and the second air inlet 131 are both connected to the air supply mechanism 30. The first air outlet 122 is arranged on the upper side of the gas outlet 112, and the second air outlet 132 is arranged on the lower side of the gas outlet 112. The distance between the center of the first air outlet 122 and the horizontal center plane P of the gas outlet 112 is D1, and the distance between the center of the second air outlet 132 and the horizontal center plane P is D2, and D1≤D2.

[0054] On the one hand, by respectively arranging the first air outlet 122 and the second air outlet 132 on the upper and lower sides of the gas outlet 112, air is supplemented on both the upper and lower sides of the gas outlet 112, thereby improving the uniformity of mixing of air and gas; on the other hand, the air flowing out of the first air outlet 122 has a downward pressure on the gas, and the air flowing out of the second air outlet 132 has an upward push on the gas. By setting the distance D1 between the center of the first air outlet 122 and the horizontal center plane P of the gas outlet 112 to be smaller than the distance D2 between the center of the second air outlet 132 and the horizontal center plane P, the downward pressure of the air on the gas is greater than the upward push on the gas, even if the air as a whole has a downward pressure on the gas, thereby significantly alleviating the phenomenon of gas floating, making the gas distribution in the ejector pipe 212 more uniform and the gas and air mixing more uniform, thereby improving the combustion efficiency of the burner 20.

[0055] Optionally, the ratio of the distance D1 between the center of the first air outlet 122 and the horizontal center plane P of the gas outlet 112 to the distance D2 between the center of the second air outlet 132 and the horizontal center plane P is 0.35-0.9. Specifically, the ratio of D1 to D2 can be: 0.35, 0.5, 0.6, 0.75, 0.8, 0.9, etc. Preferably, it is 0.75.

[0056] like Figure 5 As shown, a connecting cavity 14 is also provided in the gas distribution seat 10, and the outlet of the air supply mechanism 30 is connected to the inlet of the connecting cavity 14. The inlet of the first air channel 12 (i.e., the first air inlet 121) and the inlet of the second air channel 13 (i.e., the second air inlet 131) are both connected to the connecting cavity 14. In other words, after the air provided by the air supply mechanism 30 enters the gas distribution seat 10, it is first buffered and uniformly distributed in the connecting cavity 14 before entering the first air channel 12 and the second air channel 13 respectively, so as to ensure that the air flow entering the first air channel 12 and the second air channel 13 is uniform.

[0057] Preferably, the cross-sectional area of ​​the first air outlet 122 is S1, and the cross-sectional area of ​​the second air outlet 132 is S2, where S1≤S2. Since the airflows entering the first air passage 12 and the second air passage 13 through the connecting cavity 14 are substantially the same, on this basis, by setting the cross-sectional area S1 of the first air outlet 122 to be smaller than the cross-sectional area of ​​the second air outlet 132, the air flowing out of the first air outlet 122 can be made faster, thereby increasing the downward pressure effect on the gas, further significantly alleviating the phenomenon of gas floating, and improving the uniformity of gas distribution in the ejector tube 212 and the uniformity of gas and air mixing.

[0058] In this embodiment, the ratio of the cross-sectional area S1 of the first air outlet 122 to the cross-sectional area S2 of the second air outlet 132 is 0.5-1. Optionally, the ratio of S1 to S2 may be 0.5, 0.6, 0.7, 0.8, 0.9, 1. Preferably, it is 0.8.

[0059] like Figure 5 As shown, along the air flow direction ( Figure 5 ), the cross-sectional area of ​​the first air channel 12 gradually decreases. Under the premise that the amount of air entering the first air channel 12 is basically constant, by setting the cross-sectional area of ​​the first air channel 12 to gradually decrease, the flow rate of the air flowing out of the first air outlet 122 can be increased, thereby improving the downward pressure effect on the gas, and then more significantly alleviating the phenomenon of gas floating, and improving the uniformity of gas distribution in the ejector tube 212 and the uniformity of gas and air mixing. In this embodiment, the cross-section of the first air channel 12 at each position is circular, and the extension axis of the first air channel 12 is arranged parallel to the center line of the gas outlet 112. In other embodiments, the cross-sectional shape of the first air channel 12 at each position may also be different, as long as the cross-sectional area is ensured to gradually decrease along the air flow direction.

[0060] like Figure 5 As shown, along the air flow direction ( Figure 5The cross-sectional area of ​​the first air passage 12 gradually increases (in the direction of the dotted arrow in the figure). Under the premise that the amount of air entering the second air passage 13 is basically constant, by setting the cross-sectional area of ​​the second air passage 13 to gradually increase, the flow rate of the air flowing out of the second air outlet 132 can be reduced, thereby reducing the upward push of the air flowing out of the second air outlet 132 on the gas, so the overall downward pressure of the air on the gas will be greater, thereby more significantly alleviating the phenomenon of gas floating, and improving the uniformity of gas distribution in the ejector tube 212 and the uniformity of gas and air mixing. In this embodiment, the cross-section of the second air passage 13 at each position is circular, and the extension axis of the second air passage 13 is arranged parallel to the center line of the gas outlet 112. In other embodiments, the cross-sectional shapes of the second air passage 13 at each position can be the same or different, as long as the cross-sectional area is gradually reduced along the air flow direction.

[0061] Embodiment 2

[0062] This embodiment provides a gas supply device and a gas cooker. The gas cooker in this embodiment has the same general structure as the gas cooker in the first embodiment, except that the shapes and extension trajectories of the first air passage 12 and the second air passage 13 are as follows:

[0063] like Figure 6 As shown, along the air flow direction, the axis L1 of the first air channel 12 is tilted downward. This arrangement allows the air flowing out of the first air channel 12 to have a downward motion component, which can not only better press down the gas, but also significantly alleviate the phenomenon of gas floating; it is also beneficial to improve the uniformity of gas and air mixing. In this embodiment, the cross-sectional area of ​​the first air channel 12 at each position is the same. In other embodiments, the cross-sectional area of ​​the first air channel 12 at each position may also be different, which is not specifically limited here.

[0064] like Figure 6 As shown, along the flow direction of the air, the axis L2 of the second air channel 13 is arranged obliquely upward. Since the end of the ejector tube 212 used for docking with the gas distribution seat 10 is in a trumpet shape, that is, it is contracted in the direction away from the gas distribution seat 10. By setting the axis L2 of the second air channel 13 to be arranged obliquely upward, the flow direction of the air discharged from the second air outlet 132 is close to or consistent with the extension direction of the lower inner wall of the ejector tube 212, thereby reducing the flow resistance of the air. Of course, the axis L2 of the second air channel 13 can also be arranged horizontally.

[0065] It should be noted that the axis L2 of the second air channel 13 is tilted upward, which to a certain extent will increase the upward push of the air discharged from the second air outlet 132 on the gas. In this regard, in this embodiment, the angle between the axis L1 of the first air channel 12 and the horizontal direction is α1, and the angle between the axis L2 of the second air channel 13 and the horizontal direction is α2, α1≥α2. By setting it in this way, it can be ensured that the increase in the downward pressure of the air on the gas is greater than the increase in the upward push of the air on the gas, thereby further increasing the downward pressure of the air on the gas, thereby more significantly alleviating the phenomenon of gas floating. Optionally, 0<α1≤30°, 0≤α2≤30°.

[0066] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the field, according to the idea of ​​the utility model, there will be changes in the specific implementation methods and application scopes, and the content of this specification should not be understood as limiting the utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A gas supply device, characterized in that: It comprises a gas distribution seat (10), wherein the gas distribution seat (10) is provided with: A gas channel (11), one end of which is used to communicate with a gas source, and the other end of which forms a gas outlet (112); A first air channel (12), one end of which is used to communicate with the air supply mechanism (30) and the other end of which forms a first air outlet (122); A second air passage (13), one end of which is used to communicate with the air supply mechanism (30) and the other end of which forms a second air outlet (132); The first air outlet (122) is arranged on the upper side of the gas outlet (112), and the distance between the center of the first air outlet (122) and the horizontal center plane of the gas outlet (112) is D1; ​​the second air outlet (132) is arranged on the lower side of the gas outlet (112), and the distance between the center of the second air outlet (132) and the horizontal center plane is D2, and D1≤D2.

2. The gas supply device according to claim 1, characterized in that: The ratio of the distance D1 between the center of the first air outlet (122) and the horizontal center plane of the gas outlet (112) to the distance D2 between the center of the second air outlet (132) and the horizontal center plane is 0.35-0.

9.

3. The gas supply device according to claim 1, characterized in that: The cross-sectional area of ​​the first air outlet (122) is S1, the cross-sectional area of ​​the second air outlet (132) is S2, and S1≤S2.

4. The gas supply device according to claim 3, characterized in that: The ratio of the cross-sectional area S1 of the first air outlet (122) to the cross-sectional area S2 of the second air outlet (132) is 0.5-1.

5. The gas supply device according to claim 1, characterized in that: Along the flow direction of air, the cross-sectional area of ​​the first air passage (12) gradually decreases; and / or Along the flow direction of the air, the cross-sectional area of ​​the first air channel (12) gradually increases.

6. The gas supply device according to claim 1, characterized in that: Along the flow direction of air, the axis of the first air channel (12) is arranged to be inclined downward; and / or Along the flow direction of the air, the axis of the second air channel (13) is arranged obliquely upward or horizontally.

7. The gas supply device according to claim 6, characterized in that: The angle between the axis of the first air channel (12) and the horizontal direction is α1, and the angle between the axis of the second air channel (13) and the horizontal direction is α2, and α1≥α2.

8. The gas supply device according to any one of claims 1 to 7, characterized in that: A connecting cavity (14) is also provided in the gas distribution seat (10), the inlet of the connecting cavity (14) is used to communicate with the air supply mechanism (30), and the inlet of the first air channel (12) and the inlet of the second air channel (13) are both connected to the connecting cavity (14).

9. The gas supply device according to any one of claims 1 to 7, characterized in that: The gas supply device also includes: an air supply mechanism (30), wherein the inlet ends of the first air channel (12) and the second air channel (13) are both in communication with the air supply mechanism (30); and / or The nozzle (40) is connected to the gas outlet (112), and the injection axis of the nozzle (40) is arranged colinearly with the axis of the gas outlet (112).

10. A gas cooker, characterized in that: The invention comprises a burner (20) and a gas supply device according to any one of claims 1 to 9, wherein the burner (20) comprises an ejector tube (212), and the gas outlet (112), the first air outlet (122), and the second air outlet (132) are all opposite to the inlet of the ejector tube (212).

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