Ejecting pipe and furnace end

Abstract

The injection pipe comprises a body, and the body comprises an inner gas pipe, a central gas pipe and an outer gas pipe which are arranged at intervals. The outer gas pipe comprises a transversely-arranged fifth pipe body and a vertically-arranged sixth pipe body, and a third plug is arranged at the joint of the fifth pipe body and the sixth pipe body so that the fifth inner cavity and the sixth inner cavity can communicate with each other and form an outer gas channel, and the communication position is in fillet transition. Therefore, the transversely-arranged fifth pipe body is connected with the vertically-arranged sixth pipe body, the detachable third plug is arranged at the connecting position, the fifth inner cavity and the sixth inner cavity are communicated to form an outer gas channel, and meanwhile the communicating position of the fifth inner cavity and the sixth inner cavity is in fillet transition. The situation that a guide-in pipe needs to be additionally arranged to change the direction of the outer gas pipe so as to be communicated with the outer ring flame path of the three-ring flame cover is avoided, so that smooth flowing of gas is guaranteed, the heating efficiency of the outer ring flame path of the burner is improved, food is evenly heated, the cooking time is shortened, and the cooking quality and taste of the food are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of gas stoves, in particular to an ejector pipe and a burner head. Background Art

[0002] At present, the burner head of a three-ring fire gas stove includes an ejector pipe and a three-ring fire cap. The three-ring fire cap is installed on the ejector pipe, and gas is connected to the ejector pipe through three intake pipes. The three-ring fire cap is provided with three-ring fire channels, and an outer ring flame, an inner ring flame and a central flame are respectively formed after ignition.

[0003] However, in the prior art, the outer gas pipe connected to the outer ring fire channel on the three-ring fire cap usually has an inlet pipe (as shown in Figure 1 ) obliquely towards the central gas pipe near the three-ring fire cap to change the direction of the outer gas pipe so as to be connected to the outer ring fire channel on the three-ring fire cap. When gas is introduced into the outer gas pipe, due to the large bending flow in the inlet pipe, the gas transportation is not smooth, resulting in weak combustion of the outer ring fire channel of the three-ring gas stove. This not only affects the heating efficiency of the gas stove, but also causes uneven heating of food, increases the cooking time, and may affect the cooking quality and taste of food. Summary of the Utility Model

[0004] In order to overcome the above-mentioned defects in the prior art, the utility model provides an ejector pipe and a burner head. The outer gas pipe includes a fifth pipe body arranged horizontally and a sixth pipe body arranged vertically, and the fifth pipe body is connected to the sixth pipe body and a detachable third plug is provided at the connection to connect the fifth inner cavity and the sixth inner cavity to form an outer gas channel. At the same time, the connection between the fifth inner cavity and the sixth inner cavity adopts a rounded corner transition, avoiding the need to add an inlet pipe to change the direction of the outer gas pipe to connect to the outer ring fire channel of the three-ring fire cap, thereby ensuring smooth gas flow.

[0005] The technical solution adopted by the utility model to solve its problems is as follows:

[0006] An ejector pipe, comprising:

[0007] A body, which includes an inner gas pipe, a central gas pipe and an outer gas pipe arranged at intervals;

[0008] The inner gas pipe includes a first pipe body arranged horizontally and a second pipe body arranged vertically. A first inner cavity is formed in the first pipe body, a second inner cavity is formed in the second pipe body, one end of the first pipe body is connected to one end of the second pipe body and a detachable first plug is provided at the connection to connect the first inner cavity and the second inner cavity to form an inner gas channel, and the connection between the first inner cavity and the second inner cavity adopts a rounded corner transition;

[0009] The central gas pipe includes a third pipe body arranged horizontally and a fourth pipe body arranged vertically. A third inner cavity is formed in the third pipe body, and a fourth inner cavity is formed in the fourth pipe body. One end of the third pipe body is connected to one end of the fourth pipe body, and a detachable second plug is provided at the connection to communicate the third inner cavity with the fourth inner cavity to form a central gas passage, and the connection between the third inner cavity and the fourth inner cavity is transitioned with a rounded corner;

[0010] The outer gas pipe includes a fifth pipe body arranged horizontally and a sixth pipe body arranged vertically. A fifth inner cavity is formed in the fifth pipe body, and a sixth inner cavity is formed in the sixth pipe body. One end of the fifth pipe body is connected to one end of the sixth pipe body, and a detachable third plug is provided at the connection to communicate the fifth inner cavity with the sixth inner cavity to form an outer gas passage, and the connection between the fifth inner cavity and the sixth inner cavity is transitioned with a rounded corner.

[0011] Preferably, the inner gas pipe, the central gas pipe, and the outer gas pipe are all in a mirror L-shaped structure; the outer gas pipe is located on the right side of the central gas pipe, and the inner gas pipe is located on the left side of the central gas pipe.

[0012] Preferably, the diameters of the inner gas pipe and the outer gas pipe are larger than the diameter of the central gas pipe.

[0013] Preferably, the first plug is provided with a first convex block with a rounded corner. When the first plug is installed at the connection of the first pipe body and the second pipe body, the first convex block is located at the bottom of the second inner cavity, so that the first inner cavity and the second inner cavity are connected in a rounded corner transition;

[0014] The second plug is provided with a second convex block with a rounded corner. When the second plug is installed at the connection of the third pipe body and the fourth pipe body, the second convex block is located at the bottom of the fourth inner cavity, so that the third inner cavity and the fourth inner cavity are connected in a rounded corner transition;

[0015] The third plug is provided with a third convex block with a rounded corner. When the third plug is installed at the connection of the fifth pipe body and the sixth pipe body, the third convex block is located at the bottom of the sixth inner cavity, so that the fifth inner cavity and the sixth inner cavity are connected in a rounded corner transition.

[0016] Preferably, a first arc-shaped groove extending along the arc direction is formed on the rounded corner arc surface of the first convex block. When the first plug is installed at the connection of the first pipe body and the second pipe body, the first arc-shaped groove rounds the transitions of the two side parts at the connection of the first inner cavity and the second inner cavity;

[0017] On the rounded arc surface of the second bump, a second arc-shaped groove is provided and extends along the arc direction thereof. When the second plug is installed at the connection between the third pipe body and the fourth pipe body, the second arc-shaped groove rounds the transitions on both sides of the connection between the third inner cavity and the fourth inner cavity;

[0018] On the rounded arc surface of the third bump, a third arc-shaped groove is provided and extends along the arc direction thereof. When the third plug is installed at the connection between the fifth pipe body and the sixth pipe body, the third arc-shaped groove rounds the transitions on both sides of the connection between the fifth inner cavity and the sixth inner cavity.

[0019] Preferably, a first slot is further provided on the first plug, and the first bump protrudes on the first slot; a first jack for communicating the first inner cavity and the second inner cavity is provided at the connection between the first pipe body and the second pipe body, and a first plug block is formed on the outer wall of the first jack; when the first plug is installed at the connection between the first pipe body and the second pipe body, the first bump is inserted into the first jack; the first plug block is inserted into the first slot and abuts against the bottom wall of the first slot to form a seal;

[0020] A second slot is further provided on the second plug, and the second bump protrudes on the second slot; a second jack for communicating the third inner cavity and the fourth inner cavity is provided at the connection between the third pipe body and the fourth pipe body, and a second plug block is formed on the outer wall of the second jack; when the second plug is installed at the connection between the third pipe body and the fourth pipe body, the second bump is inserted into the second jack; the second plug block is inserted into the second slot and abuts against the bottom wall of the second slot to form a seal;

[0021] A third slot is further provided on the third plug, and the third bump protrudes on the third slot; a third jack for communicating the fifth inner cavity and the sixth inner cavity is provided at the connection between the fifth pipe body and the sixth pipe body, and a third plug block is formed on the outer wall of the third jack; when the third plug is installed at the connection between the fifth pipe body and the sixth pipe body, the third bump is inserted into the third jack; the third plug block is inserted into the third slot and abuts against the bottom wall of the third slot to form a seal.

[0022] Preferably, a door panel is further included. The other end of the first pipe body forms an inner ring air inlet for connecting with an inner air inlet pipeline, and the other end of the second pipe body forms an inner ring air outlet for communicating with an inner ring channel of a burner cap;

[0023] The other end of the third pipe body forms a central ring air inlet for connecting with a central air inlet pipeline, and the other end of the fourth pipe body forms a central ring air outlet for communicating with a central ring channel of a burner cap;

[0024] The other end of the fifth pipe body forms an outer ring air inlet for connecting with an external air inlet pipeline, and the other end of the sixth pipe body forms an outer ring air outlet for communicating with the outer ring channel of the burner cap.

[0025] A groove for connecting the inner ring air inlet, the central ring air inlet and the outer ring air inlet together is provided outside the inner ring air inlet, the central ring air inlet and the outer ring air inlet, and the door panel is installed in the groove.

[0026] Preferably, the length of the fifth pipe body is longer than that of the first pipe body and the third pipe body; the height of the fourth pipe body is higher than that of the second pipe body and the sixth pipe body.

[0027] Preferably, a first connecting block for connecting the first pipe body and the third pipe body at intervals is provided between the first pipe body and the third pipe body; a second connecting block for connecting the third pipe body and the fifth pipe body at intervals is provided between the third pipe body and the fifth pipe body;

[0028] A connecting boss for connecting the second pipe body, the fourth pipe body and the sixth pipe body at intervals is provided among the second pipe body, the fourth pipe body and the sixth pipe body.

[0029] A burner head includes the ejector pipe described above, and further includes a three-ring burner cap. An inner channel, a central channel and an outer channel for gas flow are formed on the three-ring burner cap. The inner channel communicates with the inner ring air outlet, the central channel communicates with the central ring air outlet, and the outer channel communicates with the outer ring air outlet.

[0030] In summary, for the ejector pipe and the burner head of the present invention, the external air pipe includes a horizontally arranged fifth pipe body and a vertically arranged sixth pipe body, and the fifth pipe body and the sixth pipe body are connected and a detachable third plug is arranged at the connection part to connect the fifth inner cavity and the sixth inner cavity to form an external gas channel. At the same time, the connection part of the fifth inner cavity and the sixth inner cavity adopts a fillet transition, avoiding the need to increase an inlet pipe to change the direction of the external air pipe to connect to the outer ring fire channel of the three-ring burner cap, thus ensuring the smooth flow of gas, further improving the heating efficiency of the outer ring fire channel of the burner head, making the food heated evenly, reducing the cooking time, and ensuring the cooking quality and taste of the food. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic structural diagram of an ejector pipe in the prior art;

[0032] Figure 2 is a schematic structural diagram of the ejector pipe of the present invention;

[0033] Figure 3 is an exploded schematic diagram of the ejector pipe of the present invention;

[0034] Figure 4 is a schematic structural diagram of the main body in the ejector pipe of the present invention;

[0035] Figure 5 This is a schematic structural view of the other perspective of the body in the ejector tube of the present utility model;

[0036] Figure 6 This is a schematic structural view of the first plug in the ejector tube of the present utility model;

[0037] Figure 7 This is a schematic structural view of the second plug in the ejector tube of the present utility model;

[0038] Figure 8 This is a schematic structural view of the third plug in the ejector tube of the present utility model.

[0039] Among them, the meanings of the reference numerals are as follows:

[0040] 11. First tube body; 111. Inner ring air inlet; 12. Second tube body; 121. Inner ring air outlet; 122. First jack; 1221. First plug; 13. Third tube body; 131. Central ring air inlet; 132. First connecting block; 133. Second connecting block; 14. Fourth tube body; 141. Central ring air outlet; 142. Second jack; 1421. Second plug; 15. Fifth tube body; 151. Outer ring air inlet; 16. Sixth tube body; 161. Outer ring air outlet; 162. Third jack; 1621. Third plug; 17. Groove; 18. Connecting boss; 2. First plug; 21. First slot; 211. First convex block; 2111. First arc-shaped groove; 3. Second plug; 31. Second slot; 311. Second convex block; 3111. Second arc-shaped groove; 4. Third plug; 41. Third slot; 411. Third convex block; 4111. Third arc-shaped groove; 5. Door panel. Detailed implementation manners

[0041] For better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0042] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the module or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this utility model belongs. The terms used in the description of this utility model herein are for the purpose of describing specific embodiments only and are not intended to limit this utility model.

[0044] As Figure 2-8 shown, an ejector tube includes a body, and the body includes an inner gas pipe, a central gas pipe, and an outer gas pipe arranged at intervals; the inner gas pipe includes a first pipe body 11 arranged horizontally and a second pipe body 12 arranged vertically. A first inner cavity is formed in the first pipe body 11, and a second inner cavity is formed in the second pipe body 12. One end of the first pipe body 11 is connected to one end of the second pipe body 12, and a detachable first plug 2 is provided at the connection to communicate the first inner cavity and the second inner cavity to form an inner gas channel, and the connection between the first inner cavity and the second inner cavity is transitioned with a rounded corner; the central gas pipe includes a third pipe body 13 arranged horizontally and a fourth pipe body 14 arranged vertically. A third inner cavity is formed in the third pipe body 13, and a fourth inner cavity is formed in the fourth pipe body 14. One end of the third pipe body 13 is connected to one end of the fourth pipe body 14, and a detachable second plug 3 is provided at the connection to communicate the third inner cavity and the fourth inner cavity to form a central gas channel, and the connection between the third inner cavity and the fourth inner cavity is transitioned with a rounded corner; the outer gas pipe includes a fifth pipe body 15 arranged horizontally and a sixth pipe body 16 arranged vertically. A fifth inner cavity is formed in the fifth pipe body 15, and a sixth inner cavity is formed in the sixth pipe body 16. One end of the fifth pipe body 15 is connected to one end of the sixth pipe body 16, and a detachable third plug 4 is provided at the connection to communicate the fifth inner cavity and the sixth inner cavity to form an outer gas channel, and the connection between the fifth inner cavity and the sixth inner cavity is transitioned with a rounded corner.

[0045] Thus, the outer gas pipe includes a horizontally arranged fifth pipe body 15 and a vertically arranged sixth pipe body 16, and the fifth pipe body 15 is connected to the sixth pipe body 16, and a detachable third plug 4 is provided at the connection to communicate the fifth inner cavity and the sixth inner cavity to form an outer gas channel. At the same time, the connection between the fifth inner cavity and the sixth inner cavity is transitioned with a rounded corner, avoiding the need to add an inlet pipe to change the direction of the outer gas pipe to communicate with the outer ring fire channel of the three-ring burner head, thereby ensuring the smooth flow of the inner ring, central ring, and outer ring gas, further improving the heating efficiency of the outer ring fire channel of the gas stove, making the food heated evenly, reducing the cooking time, and ensuring the cooking quality and taste of the food.

[0046] Preferably, the inner gas pipe, the central gas pipe, and the outer gas pipe are all in a mirror-image L-shaped structure; the outer gas pipe is located on the right side of the central gas pipe, and the inner gas pipe is located on the left side of the central gas pipe. Among them, the diameters of the inner gas pipe and the outer gas pipe are larger than the diameter of the central gas pipe, thereby increasing the gas intake of the inner gas pipe and the outer gas pipe, improving the heating efficiency of the inner and outer ring flue gas channels of the gas stove, making the food evenly heated, reducing the cooking time, and ensuring the cooking quality and taste of the food.

[0047] Preferably, the first plug 2 is provided with a first convex block 211 with a rounded corner. When the first plug 2 is installed at the connection between the first pipe body 11 and the second pipe body 12, the first convex block 211 is located at the bottom of the second inner cavity, so that the first inner cavity and the second inner cavity are connected in a rounded-corner transition; the second plug 3 is provided with a second convex block 311 with a rounded corner. When the second plug 3 is installed at the connection between the third pipe body 13 and the fourth pipe body 14, the second convex block 311 is located at the bottom of the fourth inner cavity, so that the third inner cavity and the fourth inner cavity are connected in a rounded-corner transition; the third plug 4 is provided with a third convex block 411 with a rounded corner. When the third plug 4 is installed at the connection between the fifth pipe body 15 and the sixth pipe body 16, the third convex block 411 is located at the bottom of the sixth inner cavity, so that the fifth inner cavity and the sixth inner cavity are connected in a rounded-corner transition.

[0048] Specifically, a first arc-shaped groove 2111 extending along the arc direction is formed on the rounded-corner arc surface of the first convex block 211. When the first plug 2 is installed at the connection between the first pipe body 11 and the second pipe body 12, the first arc-shaped groove 2111 makes a rounded-corner transition on both sides of the connection between the first inner cavity and the second inner cavity; a second arc-shaped groove 3111 extending along the arc direction is formed on the rounded-corner arc surface of the second convex block 311. When the second plug 3 is installed at the connection between the third pipe body 13 and the fourth pipe body 14, the second arc-shaped groove 3111 makes a rounded-corner transition on both sides of the connection between the third inner cavity and the fourth inner cavity; a third arc-shaped groove 4111 extending along the arc direction is formed on the rounded-corner arc surface of the third convex block 411. When the third plug 4 is installed at the connection between the fifth pipe body 15 and the sixth pipe body 16, the third arc-shaped groove 4111 makes a rounded-corner transition on both sides of the connection between the fifth inner cavity and the sixth inner cavity, which can further improve the smoothness of the gas flow in the inner ring, the central ring, and the outer ring.

[0049] Wherein, a first slot 21 is further formed on the first plug 2, and a first convex block 211 protrudes from the first slot 21; a first insertion hole 122 communicating with the first inner cavity and the second inner cavity is formed at the connection between the first pipe body 11 and the second pipe body 12, and a first insertion block 1221 is formed on the outer wall of the first insertion hole 122; when the first plug 2 is installed at the connection between the first pipe body 11 and the second pipe body 12, the first convex block 211 is inserted into the first insertion hole 122; the first insertion block 1221 is inserted into the first slot 21 and abuts against the bottom wall of the first slot 21 to form a seal; a second slot 31 is further formed on the second plug 3, and a second convex block 311 protrudes from the second slot 31; a second insertion hole 142 communicating with the third inner cavity and the fourth inner cavity is formed at the connection between the third pipe body 13 and the fourth pipe body 14, and a second insertion block 1421 is formed on the outer wall of the second insertion hole 142; when the second plug 3 is installed at the connection between the third pipe body 13 and the fourth pipe body 14, the second convex block 311 is inserted into the second insertion hole 142; the second insertion block 1421 is inserted into the second slot 31 and abuts against the bottom wall of the second slot 31 to form a seal; a third slot 41 is further formed on the third plug 4, and a third convex block 411 protrudes from the third slot 41; a third insertion hole 162 communicating with the fifth inner cavity and the sixth inner cavity is formed at the connection between the fifth pipe body 15 and the sixth pipe body 16, and a third insertion block 1621 is formed on the outer wall of the third insertion hole 162; when the third plug 4 is installed at the connection between the fifth pipe body 15 and the sixth pipe body 16, the third convex block 411 is inserted into the third insertion hole 162; the third insertion block 1621 is inserted into the third slot 41 and abuts against the bottom wall of the third slot 41 to form a seal.

[0050] In addition, a first locking post is provided on the outer wall of the first jack 122, and a first connecting plate is provided at a position corresponding to the first locking post on the first plug 2. When the first plug 2 is installed at the connection between the first pipe body 11 and the second pipe body 12, the first convex block 211 on the first plug 2 is inserted into the first jack 122, and the first insertion block 1221 is inserted into the first slot 21 and abuts against the bottom wall of the first slot 21 to form a seal. At the same time, the first connecting plate abuts against the first locking post, and is locked on the first locking post by a screw passing through the first connecting plate to realize the installation of the first plug 2; a second locking post is provided on the outer wall of the second jack 142, and a second connecting plate is provided at a position corresponding to the second locking post on the second plug 3. When the second plug 3 is installed at the connection between the third pipe body 13 and the fourth pipe body 14, the second convex block 311 on the second plug 3 is inserted into the second jack 142, and the second insertion block 1421 is inserted into the second slot 31 and abuts against the bottom wall of the second slot 31 to form a seal. At the same time, the second connecting plate abuts against the second locking post, and is locked on the second locking post by a screw passing through the second connecting plate to realize the installation of the second plug 3; a third locking post is provided on the outer wall of the third jack 162, and a third connecting plate is provided at a position corresponding to the third locking post on the third plug 4. When the third plug 4 is installed at the connection between the fifth pipe body 15 and the sixth pipe body 16, the third convex block 411 on the third plug 4 is inserted into the third jack 162, and the third insertion block 1621 is inserted into the third slot 41 and abuts against the bottom wall of the third slot 41 to form a seal. At the same time, the third connecting plate abuts against the third locking post, and is locked on the third locking post by a screw passing through the third connecting plate to realize the installation of the third plug 4.

[0051] Preferably, the ejector pipe of the present utility model further includes a door panel 5. The other end of the first pipe body 11 forms an inner ring air inlet 111 for connecting with an inner air inlet pipeline, and the other end of the second pipe body 12 forms an inner ring air outlet 121 for communicating with the inner ring channel of the furnace head burner cap; the other end of the third pipe body 13 forms a central ring air inlet 131 for connecting with a central air inlet pipeline, and the other end of the fourth pipe body 14 forms a central ring air outlet 141 for communicating with the central ring channel of the furnace head burner cap; the other end of the fifth pipe body 15 forms an outer ring air inlet 151 for connecting with an outer air inlet pipeline, and the other end of the sixth pipe body 16 forms an outer ring air outlet 161 for communicating with the outer ring channel of the furnace head burner cap; a groove 17 for connecting the inner ring air inlet 111, the central ring air inlet 131 and the outer ring air inlet 151 together is provided outside the inner ring air inlet 111, the central ring air inlet 131 and the outer ring air inlet 151, and the door panel 5 is installed in the groove 17.

[0052] In this embodiment, the length of the fifth pipe body 15 is longer than that of the first pipe body 11 and the third pipe body 13; the height of the fourth pipe body 14 is higher than that of the second pipe body 12 and the sixth pipe body 16.

[0053] Preferably, a first connecting block 132 for connecting the first pipe body 11 and the third pipe body 13 at intervals is provided between the first pipe body 11 and the third pipe body 13; a second connecting block 133 for connecting the third pipe body 13 and the fifth pipe body 15 at intervals is provided between the third pipe body 13 and the fifth pipe body 15; a connecting boss 18 for connecting the second pipe body 12, the fourth pipe body 14 and the sixth pipe body 16 at intervals is provided among the second pipe body 12, the fourth pipe body 14 and the sixth pipe body 16, so that the inner air pipe, the central air pipe and the outer air pipe are connected into a whole, simplifying the manufacturing process and reducing the production cost.

[0054] In addition, the present utility model further provides a burner head, which includes the above-mentioned ejector pipe for a three-ring burner cap, and further includes a three-ring burner cap. An inner channel, a central channel and an outer channel for the flow of gas are formed on the three-ring burner cap. The inner channel is communicated with the inner ring air outlet 121, the central channel is communicated with the central ring air outlet 141, and the outer channel is communicated with the outer ring air outlet 161.

[0055] In summary, for the ejector pipe and the burner head of the present utility model, the outer air pipe includes a horizontally arranged fifth pipe body 15 and a vertically arranged sixth pipe body 16, and the fifth pipe body 15 and the sixth pipe body 16 are connected and a detachable third plug 4 is arranged at the connection, so that the fifth inner cavity and the sixth inner cavity are communicated to form an outer gas channel. At the same time, the connection between the fifth inner cavity and the sixth inner cavity adopts a rounded corner transition, avoiding the need to add an inlet pipe to change the direction of the outer air pipe to communicate with the outer ring fire channel of the three-ring burner cap, thus ensuring the smooth flow of gas in the outer air pipe, further improving the heating efficiency of the outer ring fire channel of the burner head, making the food heated evenly, reducing the cooking time, and ensuring the cooking quality and taste of the food.

[0056] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0057] It should be understood that the orientation or positional relationship indicated by the terms "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the module or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present utility model.

[0058] In addition, in the description of the present utility model, the meanings of "a plurality of" and "several" are two or more, unless otherwise specifically defined.

[0059] The technical means disclosed in the solution of the present utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications are also regarded as the protection scope of the present utility model.

Claims

1. An ejector tube, characterized in that: include: A body, comprising an inner trachea, a central trachea and an outer trachea arranged at intervals; The inner gas pipe comprises a first tube body arranged transversely and a second tube body arranged vertically, a first inner cavity is formed in the first tube body, a second inner cavity is formed in the second tube body, one end of the first tube body is connected to one end of the second tube body and a detachable first plug is provided at the connection, so that the first inner cavity is connected to the second inner cavity and forms an inner gas passage, and a fillet transition is adopted at the connection between the first inner cavity and the second inner cavity; The central gas pipe comprises a third tube body arranged in a transverse manner and a fourth tube body arranged in a vertical manner, a third inner cavity is formed in the third tube body, a fourth inner cavity is formed in the fourth tube body, one end of the third tube body is connected to one end of the fourth tube body and a detachable second plug is provided at the connection, so that the third inner cavity is connected to the fourth inner cavity and forms a central gas channel, and a fillet transition is adopted at the connection between the third inner cavity and the fourth inner cavity; The external gas pipe includes a fifth tube body arranged horizontally and a sixth tube body arranged vertically, a fifth inner cavity is formed in the fifth tube body, a sixth inner cavity is formed in the sixth tube body, one end of the fifth tube body is connected to one end of the sixth tube body and a detachable third plug is provided at the connection, so that the fifth inner cavity is connected with the sixth inner cavity to form an external gas channel, and a rounded transition is adopted at the connection between the fifth inner cavity and the sixth inner cavity.

2. The ejector tube according to claim 1, characterized in that: The inner trachea, the central trachea and the outer trachea are all in a mirror-image L-shaped structure; the outer trachea is located on the right side of the central trachea, and the inner trachea is located on the left side of the central trachea.

3. The ejector tube according to claim 2, characterized in that: The diameters of the inner air pipe and the outer air pipe are larger than the diameter of the central air pipe.

4. The ejector tube according to any one of claims 1 to 3, characterized in that: The first plug is provided with a first protrusion with rounded corners. When the first plug is installed at the connection between the first tube body and the second tube body, the first protrusion is located at the bottom of the second inner cavity, so that the first inner cavity and the second inner cavity are connected with each other in a rounded transition; The second plug is provided with a second protrusion with rounded corners. When the second plug is installed at the connection between the third tube body and the fourth tube body, the second protrusion is located at the bottom of the fourth inner cavity, so that the third inner cavity and the fourth inner cavity are connected with each other in a rounded transition; The third plug is provided with a third protrusion with rounded corners. When the third plug is installed at the connection between the fifth tube body and the sixth tube body, the third protrusion is located at the bottom of the sixth inner cavity, so that the fifth inner cavity and the sixth inner cavity are connected with each other in a rounded transition.

5. The ejector tube according to claim 4, characterized in that: A first arc-shaped groove extending along the arc direction is provided on the rounded arc surface of the first protrusion, and when the first plug is installed at the connection between the first tube body and the second tube body, the first arc-shaped groove transitions the rounded corners of both sides of the connection between the first inner cavity and the second inner cavity; A second arc-shaped groove extending along the arc direction is provided on the rounded arc surface of the second protrusion, and when the second plug is installed at the connection between the third tube body and the fourth tube body, the second arc-shaped groove transitions the rounded corners of both sides of the connection between the third inner cavity and the fourth inner cavity; A third arc-shaped groove extending along the arc direction is provided on the rounded arc surface of the third protrusion. When the third plug is installed at the connection between the fifth tube body and the sixth tube body, the third arc-shaped groove transitions the rounded corners of both sides of the connection between the fifth inner cavity and the sixth inner cavity.

6. The ejector tube according to claim 5, characterized in that: The first plug is also provided with a first slot, and the first protrusion is convexly provided on the first slot; a first insertion hole connecting the first inner cavity and the second inner cavity is provided at the connection between the first tube body and the second tube body, and the outer wall of the first insertion hole forms a first insertion block; when the first plug is installed at the connection between the first tube body and the second tube body, the first protrusion is inserted into the first insertion hole; the first insertion block is inserted into the first slot and abuts against the bottom wall of the first slot to form a seal; The second plug is also provided with a second slot, and the second protrusion is convexly provided on the second slot; a second insertion hole communicating with the third inner cavity and the fourth inner cavity is provided at the connection between the third tube body and the fourth tube body, and the outer wall of the second insertion hole forms a second insertion block; when the second plug is installed at the connection between the third tube body and the fourth tube body, the second protrusion is inserted into the second insertion hole; the second insertion block is inserted into the second slot and abuts against the bottom wall of the second slot to form a seal; A third slot is also provided on the third plug, and the third protrusion is convexly provided on the third slot; a third insertion hole connecting the fifth inner cavity and the sixth inner cavity is provided on the connection between the fifth tube body and the sixth tube body, and the outer wall of the third insertion hole forms a third insertion block; when the third plug is installed at the connection between the fifth tube body and the sixth tube body, the third protrusion is inserted into the third insertion hole; the third insertion block is inserted into the third slot and abuts against the bottom wall of the third slot to form a seal.

7. The ejector tube according to any one of claims 1 to 3, characterized in that: It also includes a door plate, the other end of the first tube body forms an inner ring air inlet for connecting to an inner air inlet pipeline, and the other end of the second tube body forms an inner ring air outlet for communicating with an inner ring channel of a stove top fire cover; The other end of the third tube body forms a central ring air inlet for connecting to the central air inlet pipeline, and the other end of the fourth tube body forms a central ring air outlet for communicating with the central ring channel of the burner head fire cover; The other end of the fifth tube body forms an outer ring air inlet for connecting to an external air inlet pipeline, and the other end of the sixth tube body forms an outer ring air outlet for communicating with an outer ring channel of a burner fire cover; The inner ring air inlet, the center ring air inlet and the outer ring air inlet are provided with grooves connecting the three together, and the door panel is installed in the grooves.

8. The ejector tube according to any one of claims 1 to 3, characterized in that: The length of the fifth tube body is longer than that of the first tube body and the third tube body; the height of the fourth tube body is higher than that of the second tube body and the sixth tube body.

9. The ejector tube according to claim 8, characterized in that: A first connection block is provided between the first tube body and the third tube body to connect the two tube bodies at intervals; a second connection block is provided between the third tube body and the fifth tube body to connect the two tube bodies at intervals; A connecting boss for connecting the second tube body, the fourth tube body and the sixth tube body at intervals is provided between the second tube body, the fourth tube body and the sixth tube body.

10. A furnace head, comprising the ejector tube according to any one of claims 1 to 9, characterized in that: It also includes a three-ring fire cover, which is provided with an inner channel, a center channel and an outer channel for the flow of gas, the inner channel is connected to the inner ring air outlet, the center channel is connected to the center ring air outlet, and the outer channel is connected to the outer ring air outlet.

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