Combustor and gas cooker comprising same

Abstract

The utility model provides a combustor and a gas cooker comprising the same. The combustor comprises a gas mixing base, a main injection pipe, a very small fire injection pipe and a fire cover, a first fuel gas channel and a second fuel gas channel which are not communicated with each other are arranged in the gas mixing base, a tiny fire hole and a main fire hole are formed in the fire cover, the tiny fire hole is located below the main fire hole, the fire cover is arranged on the gas mixing base, and the main injection pipe and the tiny fire injection pipe correspond to the first fuel gas channel and the second fuel gas channel respectively. The main injection pipe, the first gas channel and the main fire hole are communicated, and the extremely-small fire injection pipe, the second gas channel and the extremely-small fire hole are communicated. The position of the extremely small fire hole is lower than that of the main fire hole, so that flames of the extremely small fire hole are farther away from the bottom of the pot during working, and the requirements of slow stewing and slight boiling can be met; the load of the extremely small fire hole does not need to be reduced too small, the anti-interference capability of the extremely small fire is improved, the problems of easy flameout and easy backfire caused by too small load of the extremely small fire are effectively avoided, and therefore the combustion stability is improved.

Description

Technical Field

[0001] The utility model relates to a burner and a gas cooker comprising the burner. Background Art

[0002] Most stoves on the market only provide high and low heat, and there are few stoves that can meet the cooking scenarios of stewing for a long time, without overflowing the pot, and maintaining a slight boil. The minimum fire load of some stoves that can provide a very low fire is still large and cannot meet user needs. The existing technology usually provides a very low fire by simply reducing the small fire load, which often results in the small fire load being too small, poor wind resistance, and easy flameout; the small fire load intensity is low and easy to backfire; the flow control accuracy requirements of the valve body are increased; and the very small flame is usually too close to the bottom of the pot, making it difficult to meet the cooking needs of a slight boil. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defects of the existing technology such as poor wind resistance, easy flameout, low small fire load intensity, easy backfire, etc. of the extremely small fire stove, and provide a burner and a gas stove containing the same.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] A burner comprises a gas mixing base, a main ejector pipe, a very small fire ejector pipe and a fire cover, wherein the gas mixing base has a first gas channel and a second gas channel which are not connected to each other, the fire cover has a plurality of very small fire holes and a plurality of main fire holes, the plurality of very small fire holes are all located below the plurality of main fire holes, the fire cover is arranged on the gas mixing base, the main ejector pipe and the very small fire ejector pipe correspond to the first gas channel and the second gas channel respectively, so that the main ejector pipe, the first gas channel and the plurality of main fire holes are connected, and the very small fire ejector pipe, the second gas channel and the plurality of very small fire holes are connected.

[0006] In this solution, the gas of the main fire hole and the very small fire hole comes from the first gas channel and the second gas channel that are not connected to each other, respectively. The main ejector pipe and the very small fire ejector pipe provide gas to the first gas channel and the second gas channel respectively, which means that the very small fire hole has a separate gas supply channel, and the gas supply can be simply and conveniently controlled, and a valve body with precise flow control is not required. When cooking with a very small fire, it is only necessary to close the main ejector pipe and open the very small fire ejector pipe to obtain the required very small fire. The operation is simple and convenient, which reduces the requirements for the valve body and reduces the cost. At the same time, the position of the very small fire hole is lower than the main fire hole, so that the flame of the very small fire hole is farther away from the bottom of the pot when working, which can meet the needs of slow stewing and slight boiling; there is no need to reduce the load of the very small fire hole too much, which improves the anti-interference ability of the very small fire, and effectively avoids the problems of easy flameout and easy backfire caused by too small a small fire load, thereby improving the stability of combustion.

[0007] Preferably, the fire cover is provided with at least one circle of flame stabilizing grooves, wherein the flame stabilizing grooves are recessed inwardly from the outer surface of the fire cover and are connected with the plurality of extremely small fire holes.

[0008] In this solution, the extremely small fire hole is set inside the flame stabilizing groove, which effectively improves the anti-interference ability of the extremely small fire, is more windproof, and obtains a mutually stable flame. Since the flame is short and close to the wall, the combustion stability of the extremely small fire is good and it is not easy to extinguish.

[0009] Preferably, the flame stabilizing groove is communicated with a plurality of the main fire holes.

[0010] In this solution, the flame stabilizing groove is connected to the minimum fire hole and the main fire hole at the same time, so that when the main ejector tube and the minimum fire ejector tube are opened at the same time, the main fire hole and the minimum fire hole can provide mutual flame stabilization and are not easy to extinguish.

[0011] Preferably, the fire cover is further provided with a fire preservation hole, and the fire preservation hole is located below the flame stabilizing groove.

[0012] In this solution, the fire-preserving hole is arranged below the flame-stabilizing groove, which is lower than the position of the very small fire hole, and the anti-interference ability is improved.

[0013] Preferably, the outer peripheral surface of the fire cover has at least one circle of inwardly recessed flow diversion and anti-blocking grooves, and the outer ends of the plurality of extremely small fire holes are located in the flow diversion and anti-blocking grooves and are connected to the flow diversion and anti-blocking grooves.

[0014] In this solution, the outer periphery of the very small fire hole and the fire cover is not flat, but has a concave structure of diversion and anti-blocking groove. The flame root of the very small fire is hidden in the concave structure, which is less susceptible to external interference, and enhances the combustion stability of the very small fire. At the same time, the diversion and anti-blocking groove can prevent the very small fire from being blocked by external impurities, and the concave slope can also play a role in diversion.

[0015] Preferably, the outer peripheral surface of the fire cover has at least one circle of outwardly protruding flow-guiding and anti-blocking edge, and the outer ends of the plurality of extremely small fire holes are all located below the flow-guiding and anti-blocking edge.

[0016] In this solution, the flow-guiding and anti-blocking edge can block external impurities to prevent a very small fire from being blocked, and the convex inclined surface can also play a role in flow guidance.

[0017] Preferably, the fire cover is an integrally formed structure.

[0018] In this solution, the fire cover is integrally formed, which is simple and convenient to manufacture, does not require assembly, is very convenient to install and set up, and has high overall structural strength and stability.

[0019] Preferably, the fire cover includes a fire cover body and a fire cover partition layer of a split structure, wherein the fire cover partition layer is detachably connected to the fire cover body and divides the internal space of the fire cover body into a first space and a second space, wherein the first space is connected to the first gas channel, and the second space is connected to the second gas channel.

[0020] In this solution, since the fire cover includes a fire cover body and a fire cover partition layer of a split structure, the fire cover partition layer can be disassembled and adjusted to divide the internal space, so that the air flow channel can be arranged more flexibly, and the cross-sectional area of ​​the channel can be controlled by adjusting the angle size of the fire cover partition layer, thereby adjusting the flame state and obtaining a smaller fire. In addition, the overall size of the fire cover can be made smaller, and the wall thickness can be made thinner, saving materials and reducing material costs.

[0021] Preferably, the outer peripheral surface of the gas mixing base has a secondary air inlet, and the burner also includes a thermocouple, the bottom of the thermocouple is connected to the gas mixing base, and the top of the thermocouple is located between the fire cover and the secondary air inlet in the height direction.

[0022] According to the principle of thermoelectric effect, when the flame is ignited, the potential difference generated by the thermocouple due to the temperature gradient is transmitted to the gas valve and ignition device through the circuit. The potential difference is used to maintain the valve open to ensure the continuous supply of gas. If the flame is extinguished and the temperature gradient disappears, the potential difference of the thermocouple decreases, and the valve automatically closes to prevent gas leakage. In this scheme, the top of the thermocouple is lower than the fire cover and can be closer to the fire outlet of the fire cover, which can be directly affected by the flame temperature, while it is higher than the secondary air inlet and is not easily affected by the external air temperature. The thermocouple can maintain the potential difference when the flame is burning according to the actual working conditions, avoiding the accidental closure of the gas valve due to the influence of the external air intake, or the closure of the gas valve due to the weakening of the temperature gradient during normal combustion caused by being too far away from the fire outlet of the fire cover.

[0023] The fire cover is an inner fire cover, and the burner also includes an outer fire cover, the inner fire cover is located inside the outer fire cover, and the outer fire cover is arranged on the gas mixing base, and the first gas channel is connected to the fire hole on the outer fire cover.

[0024] In this solution, an outer fire cover is sleeved on the outer side of the inner fire cover, so that when the extremely small fire hole is emitting fire, it is less likely to be affected by external wind, ensuring that the extremely small fire is less likely to be extinguished.

[0025] A gas cooker comprises the burner as described above.

[0026] On the basis of conforming to the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the utility model.

[0027] The positive and progressive effects of the utility model are:

[0028] The burner of the utility model and the gas cooker including the same, the gas of the main fire hole and the extremely small fire hole come from the first gas channel and the second gas channel which are not connected to each other, respectively, and the main ejector pipe and the extremely small fire ejector pipe provide gas for the first gas channel and the second gas channel respectively, which means that the extremely small fire hole has a separate gas supply channel, and the gas supply can be simply and conveniently controlled, and a valve body with precise flow control is not required. When extremely small fire cooking is required, it is only necessary to close the main ejector pipe and only open the extremely small fire ejector pipe to obtain the required extremely small fire, which is simple and convenient to operate, reduces the requirements for the valve body, and reduces the cost. In addition, the position of the extremely small fire hole is lower than the main fire hole, so that the flame of the extremely small fire hole is farther away from the bottom of the pot when working, which can meet the needs of slow stewing and slight boiling; there is no need to reduce the load of the extremely small fire hole too much, and the anti-interference ability of the extremely small fire is improved, which effectively avoids the problems of easy flameout and easy backfire caused by too small small fire load, thereby improving the stability of combustion. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the structure of the burner of Example 1 of the utility model.

[0030] Figure 2 This is a schematic diagram of the exploded structure of the burner of Example 1 of the utility model.

[0031] Figure 3 This is another schematic diagram of the exploded structure of the burner of Example 1 of the utility model.

[0032] Figure 4 This is a schematic diagram of the internal structure of the burner of Example 1 of the utility model.

[0033] Figure 5 This is a schematic structural diagram of the base body in the gas mixing base of Example 1 of the utility model.

[0034] Figure 6This is a schematic diagram of the flow of gas in the base body of Example 1 of the utility model.

[0035] Figure 7 This is a schematic diagram of the structure of the fire cover of Example 1 of the utility model.

[0036] Figure 8 This is a schematic diagram of the internal structure of the fire cover of Example 1 of the utility model.

[0037] Fig. 9 This is another schematic diagram of the internal structure of the fire cover of Example 1 of the utility model.

[0038] Fig.10 This is a schematic diagram of the internal structure of the burner of Example 2 of the utility model.

[0039] Fig.11 This is a schematic diagram of the internal structure of the fire cover of Example 2 of the utility model.

[0040] Description of reference numerals:

[0041] 10 Fire Cover

[0042] 100 Inner fire cover

[0043] 101 fire cover body

[0044] 102 screws

[0045] 103 fire cover partition

[0046] 104 Minimum fire hole

[0047] 105 Flame Stabilizing Tank

[0048] 106 Main fire hole

[0049] 107 Fire hole

[0050] 108 diversion and anti-blocking groove

[0051] 200 External fire cover

[0052] 30 Mixing Base

[0053] 411 Central Area

[0054] 412 First Gas Channel

[0055] 42 Second gas channel

[0056] 50 Main ejector tube

[0057] 60 ultra-small fire ejector tube

[0058] 70 Thermocouple

[0059] 80 Secondary air inlet DETAILED DESCRIPTION

[0060] The present invention will be described more clearly and completely below by way of embodiments in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the embodiments.

[0061] Example 1

[0062] like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, this embodiment discloses a burner, including a gas mixing base 30, a main ejector pipe 50 and a fire cover 10, wherein the gas mixing base 30 is provided with a first gas channel 412 and a second gas channel 42 which are not connected to each other, and the fire cover 10 is provided with a plurality of extremely small fire holes 104 and a plurality of main fire holes 106, wherein the plurality of extremely small fire holes 104 are all located below the plurality of main fire holes 106, and the fire cover 10 is arranged on the gas mixing base 30, and the main ejector pipe 50 and the extremely small fire ejector pipe 60 correspond to the first gas channel 412 and the second gas channel 42 respectively, so that the main ejector pipe 50, the first gas channel 412 and the plurality of main fire holes 106 are connected, and the extremely small fire ejector pipe 60, the second gas channel 42 and the plurality of extremely small fire holes 104 are connected. In this embodiment, the gas mixing base 30 includes a gas mixing chamber and a base body, and the gas mixing chamber is located on the base body. When the main ejector tube 50 and the extremely small fire ejector tube 60 are opened at the same time, the main ejector tube 50 and the extremely small fire ejector tube 60 provide gas to the first gas channel 412 and the second gas channel 42 respectively, and the multiple main fire holes 106 and the multiple extremely small fire holes 104 burn at the same time, which can provide a high fire for frying and cooking; when the gas supply of the main ejector tube 50 is closed and only the gas supply of the extremely small fire ejector tube 60 is opened, only the second gas channel 42 provides gas, and only the multiple extremely small fire holes 104 work, and because the multiple extremely small fire holes 104 are located lower than the multiple main fire holes 106, the flames are farther away from the bottom of the pot when working, which can meet the needs of slow stewing and slight boiling; at the same time, because the multiple extremely small fire holes 104 are located lower, there is no need to reduce the load of the extremely small fire holes 104 too much, thereby improving the anti-interference ability of the extremely small fire (such as wind resistance), and effectively avoiding the problems of easy flameout and easy backfire caused by too small a small fire load, thereby improving the stability of combustion.

[0063] like Figure 7 , Figure 8 and Fig. 9 As shown, the fire cover 10 is provided with at least one circle of flame stabilizing grooves 105, which are recessed inward from the outer surface of the fire cover 10 and communicate with a plurality of extremely small fire holes 104. The extremely small fire holes 104 are arranged inside the flame stabilizing grooves 105, which effectively improves the anti-interference ability of the extremely small fire, is more windproof, and obtains mutually stable flames. Since the flame is short and close to the wall, the combustion stability of the extremely small fire is good and it is not easy to extinguish.

[0064] Specifically, the flame stabilizing groove 105 of the present embodiment is two circles, and the flame stabilizing groove 105 is recessed inward from the outer surface of the fire cover 10 along the circumference of the fire cover 10. The multiple extremely small fire holes 104 of the present embodiment have different shape structures, including vertical extremely small fire holes 104 and extremely small fire holes 104 inclined from the center of the fire cover 10 to the outside.

[0065] The flame stabilizing groove 105 is connected to a plurality of main fire holes 106. The flame stabilizing groove 105 is connected to the main fire holes 106 while being connected to the very small fire holes 104, so that when the main ejection tube 50 and the very small fire ejection tube 60 are opened at the same time, the main fire holes 106 and the very small fire holes 104 can provide mutual flame stabilization and are not easy to extinguish.

[0066] Specifically, the upper flame stabilizing groove 105 is connected with the vertical extremely small fire hole 104 and the main fire hole 106, and the lower flame stabilizing groove 105 is only connected with the inclined extremely small fire hole 104 and is not connected with the main fire hole 106. The lower flame stabilizing groove 105 is staggered with the upper flame stabilizing groove 105. When multiple main fire holes 106 and multiple extremely small fire holes 104 are working and burning, the flames in the flame stabilizing groove 105 affect each other, and the flames of the multiple extremely small fire holes 104 and the multiple main fire holes 106 in the two circles of flame stabilizing groove 105 have good mutual stability, and a uniform and stable flame can be obtained. In addition, because the extremely small fire of this embodiment burns in a relatively narrow flame stabilizing groove, its flame is short due to space limitations and is close to the inner wall of the flame stabilizing groove, so that the combustion stability of the extremely small fire is good and it is not easy to extinguish.

[0067] like Figure 7 As shown, the fire cover 10 is also provided with a fire preservation hole 107, which is located below the flame stabilizing groove 105. The fire cover 10 is composed of a main fire hole 106, a very small fire hole 104, and a fire preservation hole 107 from top to bottom. In this embodiment, the fire preservation hole 107 is arranged below the two circles of flame stabilizing grooves 105, which is lower than the very small fire hole 104, and the anti-interference ability is improved, and it is less likely to extinguish.

[0068] like Figure 7 , Figure 8 and Fig. 9 As shown, the outer peripheral surface of the fire cover 10 has at least one circle of inwardly concave flow guiding and anti-blocking grooves 108, and the outer ends of the plurality of extremely small fire holes 104 are located in the flow guiding and anti-blocking grooves 108 and are connected to the flow guiding and anti-blocking grooves 108. In this embodiment, the flame root of the extremely small fire is hidden in the concave flow guiding and anti-blocking grooves 108, which is less susceptible to external interference, and the combustion stability of the extremely small fire is enhanced.

[0069] like Figure 8 and Fig. 9As shown, the outer circumference of the fire cover 10 has a circle of concave flow-guiding and anti-blocking grooves 108 with a horizontal trapezoidal structure with a right angle line on the upper side and a downward inclined line on the lower side. When impurities fall along the circumference of the fire cover 10, the concave structure prevents the impurities from falling into the extremely small fire hole 104. Even if they fall into the inner groove, the downward inclined surface will play a diversion role, guiding the impurities to slide outward along the inclined surface, avoiding the risk of impurities blocking the extremely small fire hole 104.

[0070] Of course, in other embodiments, the inwardly sunken flow-guiding anti-blocking edge may be replaced by an outwardly protruding flow-guiding anti-blocking edge. A circle of outwardly protruding flow-guiding anti-blocking edges is provided on the outer circumference of the fire cover 10, and the outer ends of the plurality of extremely small fire holes 104 are provided below the flow-guiding anti-blocking edges, which are inclined downwardly and outwardly. When impurities fall along the circumference of the fire cover 10, they are blocked by the flow-guiding anti-blocking edges, and the impurities cannot fall into the extremely small fire holes 104, but can only slide downwardly and outwardly along the flow-guiding anti-blocking edges, which can also avoid the risk of impurities blocking the extremely small fire holes 104.

[0071] like Figure 1-Figure 4 and Figure 8-Figure 9 As shown, the fire cover 10 is an integrally formed structure. That is, the fire cover 10 is integrally formed and cast. The main fire hole 106 on the integral fire cover is connected to the first gas channel 412 and the main ejector pipe 50. After the gas is delivered, multiple main fire holes 106 burn. Multiple extremely small fire holes 104 on the integral fire cover are connected to the second gas channel 42 and the extremely small fire ejector pipe 60. After the gas is delivered, multiple extremely small fire holes 104 burn. In this case, the integrally formed fire cover 10 is simple and convenient to manufacture, does not require assembly, and is very convenient to install and set up. In addition, the overall structure has high strength and stability.

[0072] like Figure 4 As shown, the outer peripheral surface of the gas mixing base 30 is provided with a secondary air inlet 80, and the burner further comprises a thermocouple 70, the bottom of the thermocouple 70 is connected to the gas mixing base 30, and the top of the thermocouple 70 is located between the fire cover 10 and the secondary air inlet 80 in the height direction. The electric circuit formed by two different materials at the top of the thermocouple 70 senses the flame temperature at the fire hole position of the fire cover 10, forms an electric potential difference, and issues an opening or closing instruction to the gas valve, and is not affected by the upper temperature of the fire cover 10 and the air temperature of the secondary air inlet 80, and accurately prevents gas leakage after accidental flameout.

[0073] like Figure 3 As shown, in the present embodiment, the fire cover 10 is an inner fire cover 100. Of course, in other embodiments, the fire cover 10 may also be a middle fire cover, an outer fire cover, etc., and there is no specific limitation.

[0074] The burner of this embodiment further includes an outer fire cover 200 . The inner fire cover 100 is located inside the outer fire cover 200 . The outer fire cover 200 is disposed on the gas mixing base 30 . The first gas channel 412 is connected to the fire hole on the outer fire cover 200 .

[0075] Specifically, the gas mixing base 30 includes a gas mixing chamber and a base body, and multiple main fire holes 106 are circumferentially arranged on the outer fire cover 200 and the inner fire cover 100, and the first gas channel 412 is connected to the multiple main fire holes 106 circumferentially arranged on the outer fire cover 200 and the inner fire cover 100. Multiple extremely small fire holes 104 are circumferentially arranged on the inner fire cover 100, and are all located below the multiple main fire holes 106 of the inner fire cover 100. When the main injection pipe 50 is opened, the gas is provided to the multiple main fire holes 106 of the outer fire cover 200 and the inner fire cover 100 respectively through the first gas channel 412, providing high-fire cooking. When only the extremely small fire injection pipe 60 is opened, the gas is provided to the multiple extremely small fire holes 104 on the inner fire cover 100 through the second gas channel 42, which can provide long-term stewing and micro-boiling cooking with the minimum fire. An outer fire cover 200 is sleeved on the outside of the inner fire cover 100 to protect the fire hole of the inner fire cover 100 from wind when it is burning. The extremely small fire hole 104 is arranged below the main fire hole 106 of the inner fire cover 100. When the extremely small fire hole 104 is emitting fire, it is less susceptible to the influence of external wind. After the outer fire cover 200 blocks the wind, the extremely small fire is less likely to be extinguished.

[0076] like Figure 5 As shown, the first gas channel 412 and the second gas channel 42 are not connected to each other and are arranged in the gas mixing base 30. The cross-section of the second gas channel 42 is half-moon-shaped, close to the center part and has a smaller cross-sectional area, and the rest is the first gas channel 412.

[0077] like Figure 6 As shown, in the flow direction of the gas in the first gas channel 412, a part of the gas flows to the central area 411 to provide gas to the multiple main fire holes 106 on the upper part of the inner fire cover 100, and most of the remaining gas is dispersed to various parts of the first gas channel 412 to provide gas to the multiple main fire holes 106 of the outer fire cover 200.

[0078] The utility model also provides a gas cooker, which comprises the burner mentioned above.

[0079] Example 2

[0080] like Fig.10 and Fig.11As shown, the same parts of the burner of this embodiment 2 as those of embodiment 1 are not repeated, and only the different parts are described. In embodiment 1, the fire cover 10 is integrally formed; in this embodiment 2, the fire cover 10 is a split structure. Specifically, the fire cover 10 includes a fire cover body 101 of a split structure and a fire cover partition layer 103, the fire cover partition layer 103 is detachably connected to the fire cover body 101 and divides the internal space of the fire cover body 101 into a first space and a second space, the first space is connected to the first gas channel 412, and the second space is connected to the second gas channel 42. The fire cover partition layer 103 is connected to the fire cover body 101 by screws 102. The fire cover partition layer 103 is located below the fire cover body 101. The upper part of the fire cover body 101 is cylindrical, and the lower part is a ring with inconsistent upper and lower diameters. Its upper diameter is the same as the upper diameter of the fire cover body 101, and the lower diameter is smaller than the upper diameter. It is in the shape of an inverted cone at a certain angle, and the angle can be changed. The first space after the division is connected to the first gas channel 412, and gas is supplied to the main fire hole 106 on the fire cover 10. The second space after the division is connected to the second gas channel 42, and gas is supplied to the very small fire hole 104 on the fire cover 10. Since the cross-sectional areas of the first space and the second space are adjustable and controllable, the flames of the main fire hole 106 and the very small fire hole 104 can be adjusted, and the minimum fire can be adjusted to be smaller. The fire cover partition layer 103 can be disassembled and adjusted to divide the internal space, so that the airflow channel arrangement is more flexible. By adjusting the angle size of the fire cover partition layer 103, the cross-sectional area of ​​the channel can be controlled, and the flame state can be adjusted, so as to obtain a smaller fire. In addition, part of the annular wall of the fire cover partition layer 103 surrounds the outer periphery of the fire cover body 101, so the wall thickness of the fire cover can be made thinner and the overall size can be made smaller, thereby saving materials and reducing costs.

[0081] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications all fall within the protection scope of the utility model.

Claims

1. A burner, characterized in that: It includes a gas mixing base, a main ejector pipe, a very small fire ejector pipe and a fire cover, the gas mixing base is provided with a first gas channel and a second gas channel which are not connected to each other, the fire cover is provided with a plurality of very small fire holes and a plurality of main fire holes, the plurality of very small fire holes are all located below the plurality of main fire holes, the fire cover is arranged on the gas mixing base, the main ejector pipe and the very small fire ejector pipe correspond to the first gas channel and the second gas channel respectively, so that the main ejector pipe, the first gas channel and the plurality of main fire holes are connected, and the very small fire ejector pipe, the second gas channel and the plurality of very small fire holes are connected.

2. The burner according to claim 1, characterized in that The fire cover is provided with at least one circle of flame stabilizing grooves, and the flame stabilizing grooves are recessed inward from the outer surface of the fire cover and are connected with the plurality of extremely small fire holes.

3. The burner according to claim 2, characterized in that The flame stabilizing groove is communicated with a plurality of the main fire holes.

4. The burner according to claim 2, characterized in that The fire cover is also provided with a fire protection hole, and the fire protection hole is located below the flame stabilizing groove.

5. The burner according to claim 1, characterized in that The outer peripheral surface of the fire cover has at least one circle of inwardly recessed flow-guiding and anti-blocking grooves, and the outer ends of the plurality of extremely small fire holes are located in the flow-guiding and anti-blocking grooves and are connected to the flow-guiding and anti-blocking grooves.

6. The burner according to claim 1, characterized in that The outer peripheral surface of the fire cover has at least one circle of outwardly protruding flow-guiding and anti-blocking edge, and the outer ends of the plurality of extremely small fire holes are all located below the flow-guiding and anti-blocking edge.

7. The burner according to claim 1, characterized in that The fire cover is an integrally formed structure.

8. The burner according to claim 1, characterized in that The fire cover includes a fire cover body and a fire cover partition layer of a split structure. The fire cover partition layer is detachably connected to the fire cover body and divides the internal space of the fire cover body into a first space and a second space. The first space is connected to the first gas channel, and the second space is connected to the second gas channel.

9. The burner according to claim 1, characterized in that The outer peripheral surface of the gas mixing base is provided with a secondary air inlet, and the burner further comprises a thermocouple, the bottom of the thermocouple is connected to the gas mixing base, and the top of the thermocouple is located between the fire cover and the secondary air inlet in the height direction; And / or, the fire cover is an inner fire cover, the burner also includes an outer fire cover, the inner fire cover is located inside the outer fire cover, and the outer fire cover is arranged on the gas mixing base, and the first gas channel is connected to the fire hole on the outer fire cover.

10. A gas cooker, characterized in that: The gas cooker comprises the burner according to any one of claims 1-9.

Images