Combustor and stove comprising same

Abstract

The utility model discloses a burner and a stove comprising the same. A middle shell extends between an inner ring part and an outer ring part of a gas mixing chamber of the combustor, the two ends of the middle shell are in butt joint with and communicated with the inner ring part and the outer ring part respectively, an inlet of the middle shell is communicated with an opening space located in the outer ring part, and the radial outward side of the opening space is open. The inner ring nozzle faces the opening space or an inlet of the middle shell, one part of the gas mixing chamber and the inner ring gas channel are integrally formed in the lower shell, and the other part of the gas mixing chamber and the middle shell are integrally formed in the upper shell. Under the condition that the size of the burner is not increased, it is guaranteed that the inner ring injection channel has enough distance to inject air, the injection effect is improved, and it is guaranteed that the index of smoke does not exceed the standard. And compared with air entering from the space between the inner ring part and the outer ring part, better air is provided, and the air injection effect is improved. And meanwhile, disassembly and assembly are convenient, and the relative position precision and alignment precision of the inner ring nozzle and the inner ring injection channel are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a burner and a stove comprising the same. BACKGROUND

[0002] The existing ordinary lower air inlet gas stove will affect the stability of the flame when the cabinet door is closed or opened, and the burning state is prone to be poor or even extinguished. Therefore, some schemes use an inner ring fire upper air inlet form to solve these defects. For example, the embodiment two of Chinese patent publication CN114060804A discloses a burner, wherein the inner ring nozzle and the inner ring injection channel are both upper air inlet settings (i.e., located above the mounting plate). Thus, the air entering the inner ring injection channel all comes from above the cabinet and is not affected by the opening and closing of the cabinet door.

[0003] However, the inner ring injection channel in this scheme is not as long as the inner ring injection channel extending upwards from below, so the air injection capacity is poor, incomplete combustion is prone to occur, and the smoke index is likely to exceed the standard. In order to ensure the smoke index, the diameter of the burner needs to be enlarged, but the increase in the diameter of the burner will lead to a decrease in energy efficiency. Moreover, the installation of this inner ring injection channel is complex, which is not conducive to disassembly and maintenance. SUMMARY

[0004] The technical problem to be solved by the utility model is to overcome the defects of poor injection capacity of the upper air inlet inner ring injection channel in the prior art, easy smoke index exceeding the standard, and difficulty in disassembly and maintenance.

[0005] The utility model solves the above technical problems through the following technical scheme:

[0006] A burner comprises a mixing chamber, an upper air inlet inner ring injection channel, an inner ring nozzle arranged towards the inner ring injection channel, and an inner ring gas channel connected with the inner ring nozzle, the mixing chamber comprises an inner ring part and an outer ring part, the inner ring injection channel is in communication with an inner ring cavity in the inner ring part, an intermediate shell extends between the inner ring part and the outer ring part, the two ends of the intermediate shell are respectively in abutment and communication with the inner ring part and the outer ring part, the inner cavity of the intermediate shell forms part of the inner ring injection channel, the outlet of the intermediate shell is in communication with the inner ring cavity, the inlet of the intermediate shell is in communication with an open space in the outer ring part, the radially outward side of the open space is open, the inner ring nozzle is arranged towards the open space or the inlet of the intermediate shell, wherein the mixing chamber is formed by splicing an upper shell and a lower shell, part of the mixing chamber and the inner ring gas channel are integrally formed in the lower shell, another part of the mixing chamber and the intermediate shell are integrally formed in the upper shell.

[0007] In the present scheme, on the one hand, the continuously extended intermediate shell makes full use of the interval distance between the inner ring part and the outer ring part as the extension of the length of the inner ring ejection channel. At the same time, the opening space of a certain distance between the inner ring nozzle and the inner ring ejection channel can also be utilized as part of the inner ring ejection channel, thereby ensuring that the inner ring ejection channel has sufficient distance to eject air without increasing the size of the burner, improving the ejection effect, and ensuring that the flue gas indicators do not exceed the standard. In addition, the inner ring ejection channel thus arranged directly intakes air from the radially outward side of the outer ring part, which has a better air source than air intake from between the inner ring part and the outer ring part, thereby improving the air ejection effect. On the other hand, the inner ring ejection channel can be removed with the upper shell, and the inner ring nozzle can also be removed with the upper shell. The corresponding installation of the inner ring nozzle and the inner ring ejection channel can be achieved by disassembling the upper shell and the lower shell. Not only is it easy to disassemble, but also the relative position accuracy and alignment accuracy of the inner ring nozzle and the inner ring ejection channel are improved by the butt joint of the upper shell and the lower shell.

[0008] Preferably, the burner further comprises an inner channel shell extending in the inner ring cavity, the inner channel shell being connected with the inner ring part, and the inner channel shell being formed as part of the inner ring ejection channel. The inner channel shell further increases the extension distance of the inner ring ejection channel, which is conducive to further improving the ejection effect. At the same time, it also increases the tortuosity of the flow of mixed gas in the inner ring part, reduces the flow rate of the gas, and is conducive to stabilizing the inner ring flame.

[0009] Preferably, the inner ring nozzle is arranged outside the opening space, and the opening space becomes part of the inner ring ejection channel. Thus, by utilizing the radial distance of the opening space, i.e. the radial distance of the outer ring part, the distance of the inner ring ejection channel is further increased.

[0010] Preferably, the burner comprises an inner ring gas channel, the nozzle is connected to the outlet of the inner ring gas channel, and part of the inner ring gas channel extends along the axis direction parallel to the inner ring ejection channel, and another part extends along the up-down direction of the burner. Thus, it can be ensured that the gas below can pass through the channel above.

[0011] Preferably, the opening space extends in the radial direction, and the inner ring nozzle is located in the opening space. Thus, the inner ring nozzle is blocked in the vertical direction by the opening space, and liquids or solids such as spills will not easily contact the inner ring nozzle, thereby ensuring the smoothness of the inner ring nozzle for a long time and ensuring the stable and continuous supply of inner ring gas. And the split upper shell and lower shell can ensure that the outlet of the inner ring gas channel on the lower shell is exposed after the upper shell is removed, thereby facilitating the installation and disassembly of the inner ring nozzle.

[0012] Preferably, the lower end surface of the open space has a groove, and the inner ring gas passage passes through the groove and extends to the open space. In this way, the gas passage can ensure that the inner ring nozzle is located in the open space without bending.

[0013] Preferably, the interface between the upper shell and the lower shell is located below the lower end surface of the open space, and the projection profile of the inner ring gas passage on the horizontal plane is enclosed in the projection profile of the groove on the horizontal plane. In this way, when disassembling and assembling, moving the upper shell from the upper and lower directions will not be interfered by the gas passage and the nozzle, and the disassembly and assembly can be very convenient.

[0014] Preferably, the burner further comprises an outer ring ejector pipe connected to the lower shell, and the inlet of the outer ring ejector pipe is provided with an adjustable air door. The outer ring ejector pipe can adjust the air intake through the adjustable air door to adapt to various application scenarios.

[0015] Preferably, the upper end of the intermediate shell is connected to the upper end of the open space, and the lower end of the intermediate shell is connected to the lower end of the open space. In this way, on the one hand, the intermediate shell can be formed in one piece with the outer ring part, and on the other hand, the connection between the intermediate shell and the outer ring part is firm and not easily affected by the entry of liquid and solid.

[0016] A stove, the stove comprising the burner.

[0017] The positive progress effect of the utility model lies in: the utility model ensures that the inner ring ejector passage has enough distance to eject air without increasing the size of the burner, improves the ejecting effect, and thus ensures that the index of flue gas does not exceed the standard. Compared with air intake between the inner ring part and the outer ring part, the utility model has a better air source and improves the air ejecting effect. At the same time, the utility model is convenient to disassemble and assemble, improves the relative position precision and alignment precision of the inner ring nozzle and the inner ring ejector passage. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a three-dimensional structure schematic view of the gas mixing chamber of the preferred embodiment of the utility model.

[0019] Figure 2 It is a top view structure schematic view of the gas mixing chamber of the preferred embodiment of the utility model.

[0020] Figure 3 It is a partial sectional view structure schematic view of the gas mixing chamber of the preferred embodiment of the utility model.

[0021] Figure 4 It is an exploded view structure schematic view of the gas mixing chamber of the preferred embodiment of the utility model.

[0022] Figure 5The opening space local amplification structure schematic view of the preferred embodiment of the utility model.

[0023] Figure 6 The horizontal direction section structure schematic view of the gas mixing chamber of the preferred embodiment of the utility model.

[0024] Figure 7 The three-dimensional structure schematic view of the burner of the preferred embodiment of the utility model.

[0025] Figure 8 The front view structure schematic view of the burner of the preferred embodiment of the utility model.

[0026] Figure 9 The overhead structure schematic view of the gas mixing chamber of the preferred embodiment of the utility model.

[0027] Figure 10 The local section structure schematic view of the burner of the preferred embodiment of the utility model.

[0028] Explanation of reference signs

[0029] Gas mixing chamber 100

[0030] Inner ring part 110

[0031] Inner ring cavity 111

[0032] Outer ring part 120

[0033] Intermediate shell 130

[0034] Inlet 131

[0035] Outlet 132

[0036] Inner cavity 133

[0037] Inner passage shell 134

[0038] Opening space 140

[0039] Groove 141

[0040] Inner ring nozzle 150

[0041] Inner ring gas passage 160

[0042] Outer ring ejection pipe 170

[0043] Adjustable air door 171

[0044] Inner ring ejection passage C DETAILED DESCRIPTION

[0045] The utility model will be further explained by way of examples below, but the utility model will not be limited in the scope of the described examples because of this.

[0046] As Figures 1-10 shown, the preferred embodiment of the utility model discloses a kind of combustor, as Figures 1-4 Shown, combustor includes gas mixing chamber 100, the inner ring ejection passage C of upper air inlet, the inner ring nozzle 150 being arranged towards inner ring ejection passage C and the inner ring gas passage connected with inner ring nozzle 150, gas mixing chamber 100 includes inner ring part 110 and outer ring part 120, inner ring ejection passage C is communicated with inner ring cavity 111 in inner ring part 110, there is an intermediate housing 130 between inner ring part 110 and outer ring part 120, the two ends of intermediate housing 130 are respectively butted and communicated with inner ring part 110 and outer ring part 120, the inner cavity 133 of intermediate housing 130 is formed as part of inner ring ejection passage C, the outlet 132 of intermediate housing 130 is communicated with inner ring cavity 111, the inlet 131 of intermediate housing 130 is communicated with the opening space 140 located in outer ring part 120, the radial outward side of opening space 140 is open, inner ring nozzle 150 is arranged towards opening space 140 or the inlet 131 of intermediate housing 130, wherein, gas mixing chamber 100 is spliced by upper shell 100A and lower shell 100B, a part of gas mixing chamber 100 and inner ring gas passage 160 are integrally formed in lower shell 100B, another part of gas mixing chamber 100 and intermediate housing 130 are integrally formed in upper shell 100A.

[0047] The inner ring nozzle 150 of the embodiment can be directly arranged in the opening space 140 to directly output gas towards the inlet 131 of the intermediate housing 130. It can also be arranged outside the opening space 140 and output gas indirectly towards the inlet 131 of the intermediate housing 130 by facing the opening space 140. The intermediate housing 130 can be integrally produced with the inner ring part 110 and the outer ring part 120, or it can be integrally connected with the inner ring part 110 and the outer ring part 120 by welding or other known methods. A part of the gas mixing chamber 100 and the inner ring gas passage 160 can be integrally formed in the lower shell 100B by an integral production process or by being fixed as a whole, and another part of the gas mixing chamber 100 and the intermediate housing 130 can be integrally formed in the upper shell 100A by an integral production process or by being fixed as a whole. The opening space 140 can be a blind hole or a non-blind hole formed on the outer ring part 120, or it can also be a primary secondary air inlet on the outer ring part 120 in some embodiments. The upper air inlet of the embodiment refers to the case where the combustor is installed on the stove, the inlet of the inner ring ejection passage C is located above the mounting plate or substrate of the stove, that is, the air inlet is from the open environment outside.

[0048] In this embodiment, on one hand, the continuously extending intermediate shell 130 makes full use of the interval distance between the inner ring part 110 and the outer ring part 120 as the extension of the length of the inner ring ejection channel C. Meanwhile, the opening space 140 between the inner ring nozzle 150 and the inner ring ejection channel C can also be utilized as part of the inner ring ejection channel C, thereby ensuring that the inner ring ejection channel C has sufficient distance to eject air without increasing the size of the burner, improving the ejection effect, and thus ensuring that the flue gas indicators do not exceed the standard. In addition, the inner ring ejection channel C thus arranged directly takes in air from the radially outward side of the outer ring part 120, which has a better air source than air taken in from between the inner ring part 110 and the outer ring part 120, improving the air ejection effect. On the other hand, the inner ring ejection channel C can be removed together with the upper shell 100A, and the inner ring nozzle 150 can also be removed together with the upper shell 100A. The corresponding installation of the inner ring nozzle 150 and the inner ring ejection channel C can be achieved by disassembling the upper shell 100A and the lower shell 100B, thereby achieving the overall disassembly. Not only is the disassembly convenient, but also the relative position accuracy and alignment accuracy of the inner ring nozzle 150 and the inner ring ejection channel C are improved by virtue of the butt joint of the upper shell 100A and the lower shell 100B.

[0049] As shown in Figures 1-4 The burner of this embodiment also preferably includes an inner passage shell 134 extending within the inner ring cavity 111, the inner passage shell 134 being connected with the inner ring part 110, and the inner passage shell 134 being formed as part of the inner ring ejection channel C. The inner passage shell 134 further increases the extension distance of the inner ring ejection channel C, which is conducive to further improving the ejection effect. At the same time, it also increases the tortuosity of the flow of the mixed gas in the inner ring part 110, reduces the flow rate of the gas, and is conducive to stabilizing the inner ring flame. Of course, in other embodiments, the inner passage shell 134 can further have a more tortuous extension shape, such as an S shape, to further reduce the flow rate of the gas. In some other embodiments, no additional inner passage shell 134 can be provided, and the outlet 132 of the intermediate shell 130 directly leads to the inner ring cavity 111.

[0050] In some embodiments, the inner ring nozzle 150 can be arranged outside the opening space 140, and the opening space 140 becomes part of the inner ring ejection channel C. Thus, the radial distance of the opening space 140, i.e., the radial distance of the outer ring part 120, further increases the distance of the inner ring ejection channel C. The opening space 140 can be a blind hole to ensure that all the gas entering the opening space 140 will enter the inlet 131 of the intermediate shell 130.

[0051] As shown in Figures 1-6As shown, the burner in this embodiment preferably includes an inner annular gas passage 160, with a nozzle connected to the outlet 132 of the inner annular gas passage 160. A portion of the inner annular gas passage 160 extends along an axis parallel to the inner annular ejector passage C, and another portion extends along a vertical direction relative to the burner. This ensures that the gas below can pass through the upper passage.

[0052] like Figures 1-6 As shown, in this embodiment, the opening space 140 extends radially, and the inner ring nozzle 150 is located within the opening space 140. Thus, the inner ring nozzle 150 is blocked vertically by the opening space 140, making it difficult for liquids or solids, such as spills, to come into contact with the inner ring nozzle 150, thereby ensuring the continuous unobstructed flow of the inner ring nozzle 150 and guaranteeing a stable and continuous supply of inner ring gas. Furthermore, the separate upper housing 100A and lower housing 100B ensure that when the upper housing 100A is removed, the outlet of the inner ring gas passage 160 on the lower housing 100B is exposed, facilitating the installation and removal of the inner ring nozzle 150.

[0053] like Figure 5 As shown, in a preferred embodiment, the lower end face of the opening space 140 has a groove 141, through which the inner annular gas passage 160 passes and extends into the opening space 140. This ensures that the inner annular nozzle 150 is located within the opening space 140 without requiring the gas passage to bend.

[0054] like Figure 4 and 5 As shown, in a further preferred embodiment, the interface between the upper housing 100A and the lower housing 100B is located below the lower end face of the opening space 140, and the projected outline of the inner annular gas passage 160 in the horizontal plane is enveloped within the projected outline of the groove 141 in the horizontal plane. Therefore, during disassembly and installation, moving the upper housing 100A in the vertical direction is not affected by the gas passage and nozzle, making disassembly and installation very convenient.

[0055] like Figure 4 and 5 As shown, in a further preferred embodiment, the burner also includes an outer ring injector 170, which is connected to the lower housing 100B. An adjustable damper 171 is provided at the inlet 131 of the outer ring injector. The air intake of the outer ring injector 170 can be adjusted via the adjustable damper to adapt to various application scenarios. The outer ring injector 170 can be configured for bottom air intake. With bottom air intake in the outer ring design, the outer ring injector 170 can be designed to be long enough to improve primary air replenishment, resulting in more complete combustion, reduced smoke, and improved energy efficiency. Because the outer ring is bottom air intake, its adjustable damper 171 is designed to be adjustable, allowing the gas stove to be adjusted to the optimal combustion state, further improving energy efficiency.

[0056] As Figures 1-6 As shown in the preferred embodiment, the upper end of the intermediate shell 130 is connected with the upper end of the open space 140, and the lower end of the intermediate shell 130 is connected with the lower end of the open space 140. In this way, on the one hand, the intermediate shell 130 can be formed integrally with the outer ring part 120, and on the other hand, the joint of the intermediate shell 130 and the outer ring part 120 is firm and not easily affected by the entry of liquid and solid.

[0057] As Figures 7-10 The overall structure of the burner of the present embodiment is shown in the relevant schematic diagram. Among them, the inner ring cover 200 is installed above the inner ring part 110, and the outer ring cover 300 is installed above the outer ring part 120. The mixing chamber 100 is fixed relative to the base 400. Among them, the base 400 is fixed relative to the mounting plate of the stove, and the inner ring nozzle 150 is located above the base 400, that is, the air inlet is realized from above. The burner of the present embodiment can be used for the stove, because its main improvement structure is the internal structure of the mixing chamber, and there is no big change in the overall size, and it can be used in various known stoves.

[0058] The present utility model ensures that the inner ring injection channel C has enough distance to inject air without increasing the size of the burner, improves the injection effect, and ensures that the index of flue gas does not exceed the standard. Compared with the air inlet between the inner ring part 110 and the outer ring part 120, it has a better air source and improves the air injection effect. At the same time, it is convenient to disassemble and assemble, improves the relative position accuracy and alignment accuracy of the inner ring nozzle 150 and the inner ring injection channel C.

[0059] Although the specific embodiments of the present utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the present utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present utility model, but these changes and modifications all fall within the protection scope of the present utility model.

Claims

1. A burner comprising a mixing chamber, an inner annular ejection passage of an upper air inlet, an inner annular nozzle arranged towards the inner annular ejection passage, and an inner annular gas passage connected with the inner annular nozzle, the mixing chamber comprising an inner annular portion and an outer annular portion, the inner annular ejection passage communicating with an inner annular cavity in the inner annular portion, characterized in that, An intermediate shell extends between the inner ring part and the outer ring part, two ends of the intermediate shell are respectively connected with and communicated with the inner ring part and the outer ring part, an inner cavity of the intermediate shell is formed as a part of the inner ring ejection channel, an outlet of the intermediate shell is communicated with the inner ring cavity, an inlet of the intermediate shell is communicated with an open space in the outer ring part, a radially outward side of the open space is open, and the inner ring nozzle is arranged towards the open space or the inlet of the intermediate shell.

2. The burner of claim 1, wherein The burner further comprises an inner passage shell extending in the inner ring cavity, the inner passage shell is connected with the inner ring part, and the inner passage shell is formed as a part of the inner ring ejection channel.

3. The burner of claim 1, wherein The inner ring nozzle is arranged outside the open space, and the open space is a part of the inner ring ejection channel.

4. The burner of claim 1, wherein The burner comprises an inner ring gas passage, the nozzle is connected at an outlet of the inner ring gas passage, a part of the inner ring gas passage extends along an axis direction parallel to the inner ring ejection channel, and another part of the inner ring gas passage extends along an up-down direction of the burner.

5. The burner of claim 1, wherein The open space extends in a radial direction, and the inner ring nozzle is located in the open space.

6. The burner of claim 5, wherein A lower end surface of the open space has a groove, and the inner ring gas passage passes through the groove and extends to the open space.

7. The burner of claim 6, wherein A demarcation surface of the upper shell and the lower shell is located below the lower end surface of the open space, and a horizontal projection profile of the inner ring gas passage is enveloped in a horizontal projection profile of the groove.

8. The burner of claim 1, wherein The burner further comprises an outer ring ejection pipe connected with the lower shell, and an inlet of the outer ring ejection pipe is provided with an adjustable damper.

9. Burner according to any of claims 1-8, characterized in that An upper end of the intermediate shell is connected with an upper end of the open space, and a lower end of the intermediate shell is connected with a lower end of the open space.

10. A hob, characterized in that The cooking appliance comprises the burner as claimed in any one of claims 1-9.

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