Burner capable of uniformly distributing wind pressure and gas stove

Abstract

The utility model discloses a furnace end and a gas stove enabling wind pressure to be evenly distributed, the furnace end comprises a furnace shell assembly, a furnace core and an ignition induction needle assembly, the furnace shell assembly comprises a furnace shell main body provided with a first through hole, the furnace core is installed on the furnace shell main body, the furnace core is provided with a second through hole, and the ignition induction needle assembly is installed on the furnace shell main body. The ignition induction needle assembly penetrates through the first through hole and the second through hole, the upper portion of the ignition induction needle assembly is exposed out of the second through hole, the furnace shell body is provided with a first annular concave cavity, the first annular concave cavity is connected with a main fire nozzle, a pressure equalizing plate is installed at an upper end opening of the first annular concave cavity, and pressure equalizing holes enabling air pressure to be evenly distributed are formed in the pressure equalizing plate. Air-gas mixed gas passes through the pressure equalizing plate and the uniformly distributed pressure equalizing holes to achieve primary pressure equalizing, and then secondary pressure equalizing can be carried out by virtue of a conventional pressure equalizing structure close to the combustion chamber, so that air pressure can be uniformly distributed into the combustion chamber, and the air-gas mixed gas is combusted in the combustion chamber; and the generated flame is uniformly distributed and combusted in all fire holes in the banking-up cover.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas stoves. Background Art

[0002] In order to make the wind pressure evenly distributed and burn, the burner head of the prior art is also provided with a pressure equalizing structure. Referring to the Chinese patent with the authorization announcement number CN 206771341 U, a burner is disclosed, which includes a burner main body. The burner main body includes a burner head, on which an inner ring cavity and an outer ring cavity are provided. Corresponding outer ring gas inlet holes and inner ring gas inlet holes are opened on the side wall of the burner head. A part of the lower wall of the outer ring cavity is recessed downward to form a diversion groove. The outer ring gas inlet hole is located at the center position of the lower part of the diversion groove and faces the center of the outer ring cavity. Both side walls of the diversion groove are inclined outward from bottom to top; a ring-shaped pressure equalizing seat is provided on the burner head. The pressure equalizing seat is concentric with the outer ring cavity and extends inward along the outer ring of the outer ring cavity to partially block the top opening of the outer ring cavity; there is a mixing cavity on the burner head, the inner ring cavity is located in the mixing cavity, and an air supplement inlet hole communicated with the mixing cavity is provided on the outer side wall of the burner head. In the technical solution of this patent, a pressure equalizing seat is provided on the burner head to play a role in equalizing pressure, but the pressure equalizing structure is too close to the combustion chamber, and the pressure equalizing effect can be further improved. Summary of the Utility Model

[0003] Aiming at the defects of the prior art, the technical problem to be solved by the utility model is to provide a burner head and a gas stove that can evenly distribute the wind pressure and further improve the pressure equalizing effect.

[0004] To solve the above technical problem, the utility model adopts the following technical scheme:

[0005] First, a burner head for evenly distributing wind pressure is provided, which includes a furnace shell assembly, a furnace core and an ignition and induction needle assembly. The furnace shell assembly includes a furnace shell main body provided with a first through hole. The furnace core is installed on the furnace shell main body. The furnace core is provided with a second through hole. The ignition and induction needle assembly passes through the first through hole and the second through hole and the upper part exposes the second through hole. The furnace shell main body is provided with a first circumferential concave cavity. The first circumferential concave cavity is connected with a main fire nozzle. A pressure equalizing plate is installed at the upper port of the first circumferential concave cavity. The pressure equalizing plate is provided with pressure equalizing holes for evenly distributing wind pressure.

[0006] Preferably, the pressure equalizing holes are evenly distributed along the circumference of the pressure equalizing plate.

[0007] Preferably, the pressure equalizing holes are elongated holes extending in the radial direction.

[0008] Preferably, a wind blocking plate is provided on one side of the lower end of the pressure equalizing hole in the circumferential direction.

[0009] Preferably, the pressure equalizing plate is a sheet metal part.

[0010] Preferably, the furnace core is provided with a circumferential groove around the second through hole, a liquid discharge port is arranged at the bottom of the circumferential groove, a drain hole is arranged on the furnace shell body, the upper hole opening of the drain hole is connected to the liquid discharge port, and a fourth through hole is arranged on the equalizing plate corresponding to the position of the liquid discharge port.

[0011] Preferably, a filtering structure is arranged above the liquid discharge port.

[0012] Preferably, the filtering structure includes a filter plate installed in the circumferential groove, and the filter plate is provided with filter holes.

[0013] Preferably, a positioning boss is arranged at the bottom of the liquid discharge port, a positioning groove is arranged at the upper hole opening of the drain hole, and the positioning boss is matched with the positioning groove.

[0014] In addition, a gas stove is also provided, and the gas stove is provided with the burner head described above.

[0015] The technical solution adopted by the present utility model is that the upper port of the first circumferential cavity is installed with an equalizing plate, and the equalizing plate is provided with equalizing holes for evenly distributing the wind pressure. The air and gas are mixed to form an air-gas mixture, and then pass through the equalizing plate and the evenly distributed equalizing holes to achieve the first equalization. Then, the second equalization can be carried out by means of a conventional equalizing structure close to the combustion chamber to further improve the equalization effect, so that the wind pressure can be evenly distributed into the combustion chamber. The air-gas mixture burns in the combustion chamber, and the generated flame is evenly distributed and burns at all the fire holes on the fire suppressing cover.

[0016] The specific technical solution adopted by the present utility model and the beneficial effects brought by it will be detailedly disclosed in the following specific implementation manners in combination with the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present utility model will be further described below in conjunction with the drawings and specific implementation manners:

[0018] Figure 1 is a top view of the burner head of the present utility model;

[0019] Figure 2 is Figure 1 the sectional view taken along line A-A in

[0020] Figure 3 is Figure 1 the sectional view taken along line B-B in

[0021] Figure 4 is Figure 1 the sectional view taken along line C-C in

[0022] Figure 5 is Figure 1 the sectional view taken along line D-D in

[0023] Figure 6 Side view of the burner head of the present utility model (with the furnace shell cover plate installed);

[0024] Figure 7 Side view of the burner head of the present utility model (without the furnace shell cover plate installed);

[0025] Figure 8 A - A cross - sectional view of another burner head;

[0026] Figure 9 Schematic structural diagram of the pressure equalizing plate;

[0027] Figure 10 Schematic structural diagram of the filter plate;

[0028] Figure 11 Exploded structural schematic diagram of another burner head;

[0029] In the figure: ignition induction needle assembly 1, furnace shell assembly 2, furnace shell main body 21, first through - hole 211, lower protruding part 2111, upper protruding part 2112, first circumferential concave cavity 212, drain hole 213, positioning groove 2131, air supply hole 214, small - fire air supply hole 215, induction ignition needle air inlet hole 216, inner - ring positioning ring surface 217, furnace shell upper ring 22, lower positioning step 221, upper positioning step 222, outer - ring positioning ring surface 223, furnace shell cover plate 23, sleeve 24, fixing nut 25, snap ring 251, main - fire nozzle 26, extension pipe 27, small - fire nozzle 28, air supply cavity 29, furnace core 3, second through - hole 31, circumferential groove 32, liquid discharge port 33, positioning boss 331, positioning convex ring 34, upper - part outer ring 35, third through - hole 351, central boss 36, small - fire joint 37, fire - pressing cover 4, axial convex ring 41, radial convex ring 42, large - fire holes 43, pressure equalizing plate 5, pressure equalizing holes 51, wind - blocking plate 52, fourth through - hole 53, filter plate 6, filter holes 61, avoidance notch 62, fire - pressing cap 7. Specific embodiments

[0030] The following explains and illustrates the technical solutions of the embodiments of the present utility model with reference to the accompanying drawings of the embodiments of the present utility model. However, the following embodiments are only the preferred embodiments of the present utility model, not all of them. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative efforts all fall within the protection scope of the present utility model.

[0031] Those skilled in the art can understand that, without conflict, the features in the following embodiments and implementation manners can be combined with each other.

[0032] The terms used in the present utility model are for the purpose of describing specific embodiments only and are not intended to limit the present utility model. In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "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 device 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 to the present utility model.

[0033] In the present utility model, unless otherwise clearly defined and limited, the terms such as "installation", "connection", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0034] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, unless otherwise stated, the meaning of "a plurality" is two or more, unless otherwise clearly defined.

[0035] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0036] Such as Figures 1 to 7As shown in the figure, a burner head includes a furnace shell assembly 2, a furnace core 3, and an ignition and induction needle assembly 1. The furnace shell assembly 2 includes a furnace shell main body 21 provided with a first through hole 211. The furnace core 3 is installed on the furnace shell main body 21. The furnace core 3 is provided with a second through hole 31. The ignition and induction needle assembly 1 passes through the first through hole 211 and the second through hole 31 and the upper part thereof exposes the second through hole 31. The furnace core 3 is provided with a circumferential groove 32 around the second through hole 31. A drain port 33 is provided at the bottom of the circumferential groove 32. A drain hole 213 is provided on the furnace shell main body 21. The upper end orifice of the drain hole 213 is connected to the drain port 33. The drain hole 213 is connected with an air supply hole 214. The air supply hole 214 is connected to a blower. The blower sends external air into the furnace core along the air supply hole, the drain hole, and the drain port for secondary oxygen supply.

[0037] In the above technical solution, since the drain hole is connected with an air supply hole and the air supply hole is connected to a blower, the wind pressure blown by the blower to the drain hole is used to seal the flue gas in the stove, but it does not affect the normal drainage of the drain hole. Moreover, secondary oxygen supply to the burner head can also be carried out through the drain hole, enabling the gas to burn more completely.

[0038] It can be understood that the drain port can also be made close to the ignition and induction needle assembly. Specifically, as Figure 1 shown, from the projection of the drain port 33 and the ignition and induction needle assembly 1 on the horizontal plane, the projection of the drain port 33 on the horizontal plane is close to the ignition and induction needle assembly 1, so that the wind blown upward from the drain port blows to the upper part of the ignition and induction needle assembly for cooling. Figure 1 As shown in the figure, the distance between the two is L. By reasonably designing the value of L (which can be determined through experiments), the blower can be used to blow external low-temperature air into the bottom of the induction needle, reducing the temperature of the induction needle and increasing the service life of the induction needle.

[0039] Optionally, as Figure 3 shown, the drain hole 213 vertically penetrates the furnace shell main body 21. The air supply hole 214 extends horizontally and is vertically connected to the drain hole 213 at a position close to the bottom of the drain hole. In this way, the water discharged from the burner head vertically falls along the drain hole and will not enter the air supply hole. Even during drainage, external air can be sent into the furnace core along the air supply hole, the drain hole, and the drain port.

[0040] Furthermore, a central boss 36 is provided at the upper center of the furnace core 3. The second through hole 31 penetrates upward through the central boss 36.

[0041] In one of the embodiments, a positioning boss 331 is provided at the bottom of the drain port 33. A positioning groove 2131 is provided at the upper end orifice of the drain hole. The positioning boss 331 cooperates with the positioning groove 2131, which can ensure the alignment of the drain port and the drain hole.

[0042] In one embodiment, the ignition induction needle assembly 1 is inserted into the sleeve 24. An internal threaded hole section is provided at the bottom of the first through hole 211, and the sleeve 24 is threadedly connected to the internal threaded hole section. A lower protruding portion 2111 is provided below the internal threaded hole section at the bottom of the first through hole. The lower protruding portion 2111 is connected to a fixing nut 25. A snap ring 251 is connected to the outer ring at the lower end of the ignition induction needle assembly (ceramic tube). After tightening the fixing nut, the snap ring 251 abuts against the bottom end of the lower protruding portion 2111 to position the lower end of the ignition induction needle assembly. Moreover, an upper protruding portion 2112 is provided at the top of the first through hole 211, and the inner ring at the lower end of the furnace core 3 is matched with the upper protruding portion 2112.

[0043] Referring to the prior art, the furnace shell assembly 2 further includes a furnace shell upper ring 22 installed on the furnace shell body 21. A fire suppressing cover 4 is installed above the furnace core 3, and large fire holes 43 are provided on the fire suppressing cover 4. The fire suppressing cover 4 is generally in the shape of a flared mouth with a larger top and a smaller bottom. An axial convex ring 41 is provided at the bottom end, and a radial convex ring 42 is provided at the upper end. The axial convex ring 41 is matched with a positioning convex ring 34 provided on the inner ring at the upper end of the furnace core, and the radial convex ring 42 is matched with an upper positioning step 222 provided on the inner ring at the upper end of the furnace shell upper ring 22. The outer ring 35 at the upper part of the furnace core is matched with a lower positioning step 221 provided on the inner ring at the middle part of the furnace shell upper ring 22. The furnace shell body 21 is provided with a first circumferential concave cavity 212, and the first circumferential concave cavity 212 is connected to a main fire nozzle 26. The main fire nozzle 26 is connected to an extension tube 27 extending towards the first circumferential concave cavity 212. The upper part of the furnace core 3 is provided with an upper outer ring 35, and a third through hole 351 is provided on the upper outer ring 35, which communicates downwards with the first circumferential concave cavity 212 and upwards with the outer ring of the fire suppressing cover. The first through hole 211 is connected to a small fire air supply hole 215, and the small fire air supply hole 215 is connected to a small fire nozzle 28. Through the first through hole and the second through hole, the small fire air supply hole communicates with the inside of the furnace core. The bottom of the first through hole is connected to an induction ignition needle air inlet hole 216 below the internal threaded hole section, and communicates with the inside of the furnace core through the sleeve. A protruding portion is provided on the side surface of the furnace shell body 21, and a supplementary air cavity 29 is provided on the protruding portion. The outer ports of the air supply hole 214 and the induction ignition needle air inlet hole 216 are both located in the supplementary air cavity 29. The supplementary air cavity has a lateral opening and is connected to a furnace shell cover plate 23. The main fire nozzle 26 and the small fire nozzle 28 are threadedly connected to the furnace shell cover plate 23.

[0044] In addition, the structure of the ignition induction needle assembly can refer to the prior art. The ignition induction needle assembly 1 includes a ceramic tube and an ignition needle and an induction needle connected to the ceramic tube.

[0045] As can be seen from the above description, the third through hole 351 provided on the upper outer ring 35 communicates downward with the first circumferential concave cavity and upward with the outer ring of the fire suppressing cover. Since the air mixing space between the upper outer ring 35 and the first circumferential concave cavity 212 is relatively large and the air pressure distribution is uneven, it is impossible to ensure uniform combustion of all the fire holes on the fire suppressing cover. To solve this problem, as Figures 8 to 11 shown, in another burner head structure, a pressure equalizing plate 5 is installed at the upper port of the first circumferential concave cavity 212, and the pressure equalizing plate 5 is provided with pressure equalizing holes 51 for making the air pressure evenly distributed. Air and gas are mixed to form an air-gas mixture, and then pass through the pressure equalizing plate and the evenly distributed pressure equalizing holes, so that the air pressure is evenly distributed into the combustion chamber. The air-gas mixture burns in the combustion chamber, and the generated flame is evenly distributed and burns in all the fire holes on the fire suppressing cover.

[0046] Preferably, corresponding to the shape of the upper port of the first circumferential concave cavity 212, the pressure equalizing plate 5 is circular, and the pressure equalizing holes 51 are evenly distributed along the circumferential direction of the pressure equalizing plate, so as to make the air pressure evenly distributed in the circumferential direction, and then pass through the third through hole 351, thereby ensuring uniform combustion of all the fire holes on the fire suppressing cover.

[0047] Furthermore, the pressure equalizing holes 51 are elongated holes extending in the radial direction, so as to make the air pressure evenly distributed in the radial direction. A wind shielding plate 52 is provided on the lower side of the pressure equalizing hole, which extends downward from one side (the width side of the elongated hole) in the circumferential direction of the pressure equalizing hole, and can direct the air pressure to the pressure equalizing hole and also has the function of isolating the air pressure on the adjacent pressure equalizing holes.

[0048] Preferably, the pressure equalizing plate 5 is a sheet metal part, so that the pressure equalizing holes 51 and the wind shielding plate 52 are integrally formed by stamping, and the sheet metal part has high structural strength and low processing cost.

[0049] In addition, a fourth through hole 53 is provided on the pressure equalizing plate 5 corresponding to the position of the liquid drain port. An inner ring positioning ring surface 217 is provided on the furnace shell main body 21 for positioning and cooperating with the inner ring of the pressure equalizing plate, and an outer ring positioning ring surface 223 is provided on the upper ring 22 of the furnace shell for positioning and cooperating with the outer ring of the pressure equalizing plate.

[0050] It can be understood that, further through the uniform arrangement of the third through holes 351 along the upper outer ring 35, it has a certain pressure equalizing effect, so that the flame is evenly distributed and burns in all the fire holes on the fire suppressing cover.

[0051] After setting the liquid drain port and the drain hole, in order to prevent impurities or foreign objects from blocking the drain hole, a filtering structure may also be provided above the liquid drain port 33. Specifically, the filtering structure includes a filter plate 6 installed in the circumferential groove, and the filter plate 6 is provided with filter holes 61. Since a small fire connector 37 communicating with the first through hole 211 is installed on the furnace core 3, the filter plate can be fixed through the small fire connector. A relief notch 62 is provided at the inner circle of the filter plate corresponding to the position of the small fire connector 37. A screw is provided at the lower part of the small fire connector 37, and the screw is connected to a nut. The nut is pressed against the upper side of the relief notch 62 and is fixed to the central boss 36.

[0052] It can be understood that since the liquid drain port 33, the drain hole 213, and the air supply hole 214 are connected to form an air supply channel, through the distribution structure design of the filter holes 61, the filter holes 61 on the filter plate 6 also have the function of evenly distributing the air pressure. In addition, referring to the prior art, a fire suppressing cap 7 is provided at the center of the fire suppressing cover 4 and is located above the ignition induction needle assembly 1.

[0053] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the content described in the drawings and the above specific implementation manner. Any modification that does not deviate from the functional and structural principles of the present invention will be included in the scope of the claims.

Claims

1. A burner head for evenly distributing wind pressure, comprising a furnace shell assembly, a furnace core and an ignition induction needle assembly, wherein the furnace shell assembly comprises a furnace shell body provided with a first through hole, the furnace core is mounted on the furnace shell body, the furnace core is provided with a second through hole, the ignition induction needle assembly passes through the first through hole and the second through hole and the upper part is exposed from the second through hole, characterized in that: The furnace shell body is provided with a first annular cavity, the first annular cavity is connected with a main fire nozzle, an upper port of the first annular cavity is installed with a pressure equalizing plate, and the pressure equalizing plate is provided with pressure equalizing holes for evenly distributing wind pressure.

2. A burner head for evenly distributing wind pressure according to claim 1, characterized in that: The pressure equalizing holes are evenly distributed along the circumference of the pressure equalizing plate.

3. A burner head for evenly distributing wind pressure according to claim 1, characterized in that: The pressure equalizing hole is a long strip hole extending in the radial direction.

4. A burner head for evenly distributing wind pressure according to claim 1, characterized in that: A wind shield is provided on one circumferential side of the lower end of the pressure equalizing hole.

5. The burner head for evenly distributing wind pressure according to claim 1, characterized in that: The pressure balancing plate is a sheet metal part.

6. A burner head for evenly distributing wind pressure according to claim 1, characterized in that: The furnace core is provided with an annular groove around the second through hole, a drain port is provided at the bottom of the annular groove, a drainage hole is provided on the furnace shell body, the upper end opening of the drainage hole is connected to the drain port, and a fourth through hole is provided on the pressure equalizing plate corresponding to the drain port.

7. A burner head for evenly distributing wind pressure according to claim 6, characterized in that: A filtering structure is arranged above the liquid discharge port.

8. A burner head for evenly distributing wind pressure according to claim 7, characterized in that: The filtering structure comprises a filtering plate installed in the annular groove, and filtering holes are arranged on the filtering plate.

9. The burner head for evenly distributing wind pressure according to claim 6, characterized in that: A positioning boss is provided at the bottom of the drain port, and a positioning groove is provided at the upper end opening of the drain hole, and the positioning boss cooperates with the positioning groove.

10. A gas stove, characterized in that: The gas stove is provided with a burner according to any one of claims 1 to 9.

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