Heat flow barbecue burner
By designing a hot-flow barbecue burner, the rocket-shaped spiral tube and the dielectric contraction structure of the flamethrower are used to solve the problem of incomplete flame coverage of the burner, achieving more uniform heating and higher efficiency.
Patent Information
- Application Number
- CN202420627775.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-28
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-03-28
AI Technical Summary
In existing barbecue equipment, the flame of the burner is difficult to cover the entire oven cavity, resulting in uneven temperature on the barbecue surface, wasted energy and low heating efficiency.
A hot-flow grilling burner is designed, including a cover, a seat, a firing tube and a flamethrower. The inner cavity of the induced firing tube is in the shape of a rocket. Through the structure of the gathering section, transition section and expansion section, the airflow resistance is reduced, forming an upward direct injection effect. The internal cavity of the flamethrower is equipped with a diffusing section and a contracting section. Through the throat and spacer structure, it enhances the induction effect and improves the flowability of hot air.
A more uniform heat distribution is achieved, heat loss is reduced, heating efficiency is improved, and the output temperature is quickly adjusted through batch or individual control of multiple induced tubes.
Smart Images
Figure CN222597716U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of barbecue equipment, in particular to a hot flow barbecue burner. Background Art
[0002] In order to heat a large area of a barbecue grill, multiple burners are usually set under the barbecue grill for simultaneous heating, and the barbecue grill is partially or completely heated by controlling a single or multiple burners. Since the flame of the burner is difficult to cover the entire oven cavity of the barbecue grill, the temperature of the barbecue surface is difficult to be evenly distributed, which not only wastes energy loss, but also has poor heating effect and efficiency. Utility Model Content
[0003] The utility model aims to provide a hot flow barbecue burner designed to solve the deficiencies of the above-mentioned technology.
[0004] The utility model designs a hot flow barbecue burner, comprising:
[0005] A housing, wherein the housing has a drainage cavity, and a heat outlet communicating with the drainage cavity is formed on the top of the housing;
[0006] A seat body, the seat body is located in the drainage cavity of the cover shell, and a nozzle is provided on the seat body;
[0007] An ejector pipe, the ejector pipe is located in the drainage inner cavity of the housing and is arranged above the nozzle on the seat body, the inner cavity of the ejector pipe is a rotating body structure, and the top end of the ejector pipe forms a combustion port and faces the heat outlet of the housing;
[0008] A flamethrower, wherein the flamethrower is arranged at the combustion port of the ejector tube, and the inner cavity of the flamethrower includes a diffuser section close to the ejector tube and a contraction section far away from the ejector tube, the diffuser section tends to gradually shrink from one end close to the ejector tube to the other end far away from the ejector tube, so that the diameter of one end of the diffuser section close to the ejector tube is larger than the diameter of the other end far away from the ejector tube, and the contraction section tends to gradually expand from one end close to the diffuser section to the other end far away from the diffuser section, so that the diameter of one end of the contraction section close to the diffuser section is smaller than the diameter of the other end far away from the diffuser section.
[0009] Preferably, the inner cavity of the ejector tube includes a converging section close to the nozzle and an expanding section away from the nozzle, the converging section tends to gradually shrink from one end close to the nozzle to the other end away from the nozzle, so that the diameter of one end of the converging section close to the nozzle is larger than the diameter of the other end away from the nozzle, and the expanding section tends to gradually expand from one end close to the converging section to the other end away from the converging section, so that the diameter of one end of the converging section close to the converging section is smaller than the diameter of the other end away from the converging section, and the top end of the expanding section forms a combustion port and faces the heat outlet of the cover.
[0010] According to further optimization, the inner cavity of the ejector tube further includes a transition section, and the transition section is located between the gathering section and the expansion section, and the three are interconnected.
[0011] Further optimization, the transition section is a section of equal diameter.
[0012] Preferably, the flamethrower is provided with a toothed structure, a flamethrowing port and a connecting port, the flamethrowing port is located at the end with a larger diameter of the diffuser section, the toothed structure is evenly distributed along a circle of the flamethrowing port, and the connecting port is located at the end with a larger diameter of the contraction section and is connected to the port at the other end of the expansion section.
[0013] Further optimization is performed, where the diffuser section and the contraction section meet to form a throat, where a partition structure is provided, and the diameter of the throat is smaller than the diameter of another port on the diffuser section away from the expansion section and the diameter of one port on the contraction section close to the diffuser section.
[0014] Further optimization is performed, on the inner wall of the diffuser section, a plurality of through holes are evenly and circumferentially opened, which are coaxial with the diffuser section and penetrate to the inner wall of the contraction section.
[0015] Further optimization is performed, the length dimension of the diffuser section is greater than the length dimension of the contraction section, and the gradual inclination of the contraction section is less than the gradual inclination of the diffuser section.
[0016] Preferably, the number of the ejector tubes is more than two and they are arranged side by side, the number of the nozzles is equal to the number of the ejector tubes, and the position of each nozzle is arranged to correspond to the position of the more than two ejector tubes.
[0017] Further optimization, two unconnected air intake passages are provided in the seat body, one of the nozzles is connected to one of the air intake passages so that the nozzle sprays out the gas alone, and the other air intake passage is connected to at least one of the remaining nozzles so that the remaining nozzle sprays out the gas.
[0018] Further optimization is that two air intake channels are provided in the seat body. When the two air intake channels are not connected to each other, one of the nozzles is connected to one of the air intake channels so that the nozzle sprays gas alone, and the other air intake channel is connected to at least one of the remaining nozzles so that the remaining nozzle sprays gas.
[0019] The technical effect of the utility model is that the inner cavity of the ejector tube includes a gathering section, a transition section and an expansion section from bottom to top, so that the inner cavity of the ejector tube is in the shape of a rocket as a whole, and the ejector tube is vertically connected to the seat body, so that the gas flow resistance in the ejector tube is minimized, forming an upward direct spray effect, and strengthening the ejection effect. The flamethrower located at the top of the ejector tube has an inner cavity including a diffusion section and a contraction section distributed up and down, and a throat is provided between the diffusion section and the contraction section. The diameters of the diffusion section and the contraction section are gradually increased from the throat to the opposite direction, so that the hot gas flow out of the ejector tube passes through The air is collected and compressed in the contraction section, and then enters the expansion section through the throat. After diffusion and radiation in the expansion section, the ejection effect is enhanced, which not only reduces heat loss but also has higher heating efficiency. When there are multiple ejector tubes, the corresponding number of nozzles is also multiple, and the seat body is provided with multiple air inlet channels, and the air inlet channels and the nozzles can be selectively connected, that is, one air inlet channel is connected to multiple nozzles or one nozzle, so as to achieve batch or individual control of nozzle air intake, and then realize that multiple ejector tubes can be controlled separately in batch or individually, and finally achieve the purpose of quickly adjusting the output temperature. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a structural diagram of the cover of the utility model;
[0021] Figure 2 This is another perspective view of the cover structure of the utility model;
[0022] Figure 3 It is a top view of the overall structure of the utility model;
[0023] Figure 4 It is a structural diagram of the ejector tube and the seat body in the utility model;
[0024] Figure 5 This is another perspective view of the ejector tube and the seat structure of the utility model;
[0025] Figure 6 It is a structural transverse cross-sectional view of the ejector tube and the seat body in the utility model;
[0026] Figure 7 This is an exploded view of the structure of the ejector tube and the seat body in the utility model;
[0027] Figure 8 It is a structural longitudinal sectional view of the ejector tube and the seat body in the utility model;
[0028] Fig. 9It is a longitudinal sectional view of the overall structure of the utility model.
[0029] In the figure: 1. cover shell; 11. drainage cavity; 2. seat body; 21. air inlet channel; 3. nozzle; 4. ejector tube; 41. convergence section; 42. transition section; 43. expansion section; 5. tooth structure; 6. flamethrower; 61. expansion section; 62. contraction section; 63. throat; 64. through hole; 7. reinforcement ribs; 8. partition structure. DETAILED DESCRIPTION
[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.
[0031] In this embodiment, Figure 1 As shown, it includes a seat body 2, which is detachably mounted in the cover shell 1 by fasteners, and a nozzle 3 is provided on the seat body 2. The seat body 2 is provided with an ejector tube 4 above the nozzle 3, and the ejector tube 4 is vertically arranged. The inner cavity of the ejector tube 4 is a rotating body structure, that is, the cross-section of the inner wall of the ejector tube 4 is one or more combinations of a circle, a cone or a truncated cone.
[0032] The top of the ejection tube 4 is provided with a flamethrower 6. The inner cavity of the ejection tube 4 includes a gathering section 41, a transition section 42 and an expansion section 43 which are coaxially arranged from bottom to top. The diameter of the gathering section 41 gradually decreases from bottom to top, that is, the gathering section 41 is in the shape of a truncated cone; the transition section 42 is a section of equal diameter, that is, the transition section 42 is in the shape of a cylinder; the diameter of the expansion section 43 gradually increases from bottom to top, that is, it is in the shape of an inverted truncated cone; the length of the expansion section 43 is larger than that of the transition section 42 and the expansion section 43. The gathering section 41, in this embodiment, the length ratio of the gathering section 41, the transition section 42 and the expansion section 43 is 1:2:4, the bottom end of the gathering section 41 is the gas inlet, the gas ejected from the nozzle 3 enters from the bottom end of the gathering section 41, the gas moves upward and passes through the gathering section 41, the transition section 42 and the expansion section 43 in turn, and reaches the flamethrower 6 at the top of the expansion section 43. The overall inner cavity of the ejection tube 4 is in the shape of a rocket, and the inner cavity wall is a smooth surface, thereby reducing the airflow resistance and ensuring the ejection effect.
[0033] The bottom end of the gathering section 41 also has an equal diameter section, so that the gas from the nozzle 3 can smoothly enter the gathering section 41 along the equal diameter section, and the gathering section 41 then tightens and gathers the gas. The gathering section 41 has a conical cavity structure as a whole, so that the gas ejected from the nozzle flows to the expansion section 43 with the effect of first gathering and then ejecting.
[0034] The flamethrower 6 is open at both ends, and the inner cavity of the flamethrower 6 is also a rotating body structure. The inner cavity of the flamethrower 6 is formed by connecting the diffuser section 61 and the contraction section 62. The diffuser section 61 and the contraction section 62 are distributed up and down and form a throat 63 at the connection. The bottom end of the contraction section 62 is connected to the ejector tube 4. A circle of evenly distributed tooth structures 5 is provided at the top of the diffuser section 61. A partition structure 8 is provided at the throat 63. The inner wall of the throat 63 is provided with an annular groove. The edge of the partition structure 8 is embedded in the annular groove to be fixed.
[0035] The effect of the diffuser section 61 is the same as that of the expansion section 43, so that the gas can form a certain contraction after entering the contraction section 62 from the expansion section 43, and then enter the diffuser section 61 from the contraction section 62, so that the contracted gas can enter the ejector radially, so that the gas can impact out quickly and in large quantities, and the partition structure 8 is conducive to the flame ejected by the flamethrower 6 to be more stable and uniform.
[0036] The gaps between adjacent teeth in the tooth structure 5 are conducive to mixing of the high-temperature gas and air to form high-temperature gas with uniform temperature.
[0037] In the present embodiment, the diffuser section 61 and the contraction section 62 are both truncated cone-shaped or conical rotating bodies, wherein the length dimension of the diffuser section 61 is greater than the length dimension of the contraction section 62, and the gradual inclination of the contraction section 62 is less than the gradual inclination of the diffuser section 61, that is, from the longitudinal section, the outward expansion amplitude of the expansion section 43 is greater than the downward expansion amplitude of the contraction section 62, and a plurality of through holes 64 coaxial with the diffuser section 61 are evenly opened on the inner wall of the diffuser section 61 in an annular direction, and the through holes 64 penetrate downward to the inner wall of the contraction section 62, that is, the two ends of the through holes 64 are respectively on the inner walls of the diffuser section 61 and the contraction section 62, and the two ends of the through holes 64 are elliptical on the inner walls of the diffuser section 61 and the contraction section 62, that is, the long axis direction of the elliptical opening is consistent with the overall axial direction of the ejector tube 4, so that the airflow from the ejector tube 4 can partially pass through the through holes 64 to reach the ejector, so as to ensure that the high-temperature airflow can be supplied to the flamethrower 6 in a concentrated manner.
[0038] The flamethrower 6 is detachably connected to the ejection tube 4. The flamethrower 6 is sleeved on the top of the expansion section 43 and then circumferentially fastened by fasteners.
[0039] There are more than two ejector tubes 4 and they are arranged side by side. In this embodiment, they are arranged in sequence along the length direction of the base body 2 and connected to the base body 2. The nozzles 3 and the ejector tubes 4 are arranged one by one. The outer walls of adjacent ejector tubes 4 are connected by reinforcing ribs 7 to enhance the overall stability of the ejector tubes 4.
[0040] Two air inlet channels 21 are provided in the base body 2. When the air inlet channels 21 are not connected to each other, one nozzle 3 is connected to one air inlet channel 21 so that the nozzle 3 sprays gas alone, and the other air inlet channel 21 is connected to at least one of the remaining nozzles 3 so that the remaining nozzle 3 sprays gas. In this embodiment, there are two air inlet channels 21, three ejector pipes 4, and three corresponding nozzles 3. One air inlet channel 21 is connected to two of the nozzles 3 so that the ejector pipes 4 corresponding to the two nozzles 3 can spray gas at the same time; the other air inlet channel 21 is connected to the remaining nozzle 3 alone so that the ejector pipe 4 corresponding to the nozzle 3 can spray gas alone. In other words, multiple ejector pipes 4 can be controlled in batches or individually, so as to control the output temperature and quickly adjust the required grilling temperature.
[0041] Of course, the two air inlet channels 21 may be interconnected, in which case the two air inlet channels 21 are equivalent to one air inlet channel, and all the nozzles 3 are connected thereto.
[0042] The utility model also includes a housing 1. In this embodiment, the housing 1 has a drainage cavity 11. The upper end of the housing 1 has an opening that communicates with the drainage cavity 11. The opening serves as a heat outlet, that is, the hot gas flow from the ejector tube 43 flows out from the heat outlet after passing through the drainage cavity 11 of the housing 1. The housing 1 is a rectangular hollow structure as a whole. The seat 2 is fixedly connected to the inner wall at the central position of the housing 1. The top of the ejector tube 4 faces the upper end of the housing 1. In this way, the housing 1 can guide the high-temperature gas generated by the ejector, and finally the high-temperature gas comes out from the heat outlet of the housing 1. Usually, the housing 1 is vertically arranged, and the ejector tube 4 is also correspondingly arranged vertically. A through hole is opened on the side of the housing 1 for an external gas source to enter and connect with the air inlet channel 21. In addition, the seat 2 and the ejector tube 4 are usually located in the middle or lower middle part of the housing 1, so that the hot gas flow ejected by the flamethrower 6 can flow to the heat outlet along the drainage cavity 11, accelerating the drainage speed and the injection force.
[0043] It should be noted that the drainage cavity 11 of the housing 1 may be in a rectangular shape, or may be cylindrical or conical, forming a channel-like cavity to converge and drain the hot gas flow ejected by the flamethrower 6 to the heat outlet.
[0044] The present utility model is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all those having the same or similar technical solutions as the present application fall within the protection scope of the present utility model.
Claims
1. A hot flow grill burner, characterized in that: include: A housing (1), the housing (1) having a drainage inner cavity (11), and a heat outlet communicating with the drainage inner cavity (11) formed at the top of the housing (1); A seat body (2), the seat body (2) being located in the drainage cavity (11) of the housing (1), and the seat body (2) being provided with a nozzle (3); An ejector tube (4), the ejector tube (4) being located in the drainage inner cavity (11) of the housing (1) and being arranged above the nozzle (3) on the seat body (2), the inner cavity of the ejector tube (4) being a rotating body structure, the top end of the ejector tube (4) forming a combustion port and facing the heat outlet of the housing (1); A flamethrower (6), the flamethrower (6) being arranged at the combustion port of the ejector tube (4), the inner cavity of the flamethrower (6) comprising a diffuser section (61) close to the ejector tube (4) and a contraction section (62) far from the ejector tube (4), the diffuser section (61) gradually shrinking from one end close to the ejector tube (4) to the other end far from the ejector tube (4), so that the diameter of one end of the diffuser section (61) close to the ejector tube (4) is larger than the diameter of another end far from the ejector tube (4), and the contraction section (62) gradually expanding from one end close to the diffuser section (61) to the other end far from the diffuser section (61), so that the diameter of one end of the contraction section (62) close to the diffuser section (61) is smaller than the diameter of another end far from the diffuser section (61).
2. A hot flow grill burner according to claim 1, characterized in that: The inner cavity of the ejector tube (4) comprises a converging section (41) close to the nozzle (3) and an expanding section (43) away from the nozzle (3); the converging section (41) shows a tendency to gradually shrink from one end close to the nozzle (3) to the other end away from the nozzle (3), so that the diameter of one end of the converging section (41) close to the nozzle (3) is larger than the diameter of another end away from the nozzle (3); the expanding section (43) shows a tendency to gradually expand from one end close to the converging section (41) to the other end away from the converging section (41), so that the diameter of one end of the converging section (41) close to the converging section (41) is smaller than the diameter of another end away from the converging section (41); and the top end of the expanding section (43) forms a combustion port and faces the heat outlet of the casing (1).
3. A hot flow grill burner according to claim 2, characterized in that: The inner cavity of the ejector tube (4) further comprises a transition section (42), wherein the transition section (42) is located between the gathering section (41) and the expansion section (43), and the three sections are interconnected.
4. A hot flow grill burner according to claim 3, characterized in that: The transition section (42) is a section of equal diameter.
5. A hot flow grill burner according to claim 2, characterized in that: The flamethrower (6) is provided with a tooth structure (5), a flamethrower port and a connection port. The flamethrower port is located at the end of the diffuser section (61) with a larger diameter. The tooth structure (5) is evenly distributed along a circle of the flamethrower port. The connection port is located at the end of the contraction section (62) with a larger diameter and is connected to a port at the other end of the expansion section (43).
6. A hot flow grill burner according to claim 5, characterized in that: A throat (63) is formed at the junction of the diffuser section (61) and the contraction section (62), and a partition structure (8) is provided at the throat (63). The diameter of the throat (63) is smaller than the diameter of another port on the diffuser section (61) away from the expansion section (43) and the diameter of one port on the contraction section (62) close to the diffuser section (61).
7. A hot flow grill burner according to claim 6, characterized in that: A plurality of through holes (64) are evenly arranged in an annular direction on the inner wall of the diffuser section (61), which are coaxial with the diffuser section (61) and penetrate to the inner wall of the contraction section (62).
8. A hot flow grill burner according to claim 7, characterized in that: The length dimension of the diffuser section (61) is greater than the length dimension of the contraction section (62), and the gradual inclination of the contraction section (62) is less than the gradual inclination of the diffuser section (61).
9. A hot flow grill burner according to claim 1, characterized in that: The number of the ejector tubes (4) is more than two and they are arranged side by side, the number of the nozzles (3) is equal to the number of the ejector tubes (4), and the position of each nozzle (3) is arranged to correspond to the position of the more than two ejector tubes (4).
10. A hot flow grill burner according to claim 9, characterized in that: Two air inlet passages (21) are arranged in the seat body (2); when the two air inlet passages (21) are not connected to each other, one of the nozzles (3) is connected to one of the air inlet passages (21) so that the nozzle (3) sprays out the gas alone, and the other of the air inlet passages (21) is connected to at least one of the remaining nozzles (3) so that the remaining nozzles (3) spray out the gas.