Burner fire cover and burner

Abstract

The utility model provides a burner fire cover and a burner, the burner fire cover comprises a cover part and an annular side wall, a gas mixing chamber is defined by the cover part and the side wall, the burner fire cover further comprises an ignition groove, and an outlet of the ignition groove extends on the outer side of the side wall in the horizontal direction; the burner fire cover further comprises a first gas inlet channel, the inner diameter of the first gas inlet channel is smaller than the width of the side, close to the gas mixing chamber, of the ignition groove, and the ignition groove communicates with the gas mixing chamber through the first gas inlet channel. The ignition groove extends in the horizontal direction, when the ignition needle is correspondingly located in the extending range of the ignition groove, ignition can be achieved through the ignition groove, and the ignition success rate of the burner cap is increased. When installation deviation exists in the burner fire cover, ignition can still be carried out. The area of the cross section of the first gas inlet channel is smaller than that of the cross section of the ignition groove, so that when gas sequentially passes through the first gas inlet channel and the ignition groove, a channel where the gas can flow is widened, the flow speed of the gas is slowed down, and the success rate of ignition of the burner cap is increased.

Description

Technical Field

[0001] The utility model relates to a burner fire cover and a burner. Background Art

[0002] The fire cover of the burner is provided with an ignition hole that cooperates with the ignition needle. When the stove overflows during daily use, the overflowed liquid will gradually drip onto the fire cover, causing the ignition hole of the fire cover to be blocked, thereby affecting the ignition of the fire cover; or when the fire cover is not accurately installed, the circular fire hole cannot be completely aligned with the ignition needle, which can easily cause ignition failure. The current common solution is to set up multiple ignition holes. When one or more of the ignition holes are blocked, the fire cover can still ignite smoothly, and the multiple ignition holes can be set to different shapes or sizes.

[0003] However, the ignition holes in the prior art are evenly arranged, that is, the size of the air inlet of the ignition hole is the same as the size of the air outlet of the ignition hole. When the gas pressure changes, the flow rate of the gas in the ignition hole changes with the gas pressure, thereby affecting the ignition efficiency and success rate. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a burner fire cover and a burner in order to overcome the defects in the prior art that the circular fire hole cannot be completely aligned with the ignition needle and the flow rate of the gas in the ignition hole changes with the gas pressure.

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

[0006] A burner fire cover, comprising a cover portion and an annular side wall, wherein the cover portion and the side wall enclose a gas mixing chamber.

[0007] The burner fire cover also includes an ignition groove, the outlet of which extends horizontally on the outer side of the side wall;

[0008] The burner fire cover also includes a first air inlet passage, the inner diameter of which is smaller than the width of the ignition groove on one side close to the air mixing chamber.

[0009] The ignition groove is connected to the air mixing chamber through the first air intake passage.

[0010] In this solution, by setting an ignition groove, the ignition groove extends in the horizontal direction. When the ignition pin is correspondingly located within the extended range of the ignition groove, ignition can be achieved through the ignition groove, which is beneficial to the ignition success rate of the burner fire cover. When there is a deviation in the installation of the burner fire cover, ignition can still be performed. The ignition groove is connected to the gas mixing chamber through the first air intake channel. The cross-sectional area of ​​the first air intake channel is smaller than the cross-sectional area of ​​the ignition groove, so that when the gas passes through the first air intake channel and the ignition groove in sequence, the channel through which the gas can flow becomes wider and the flow rate of the gas slows down, thereby increasing the success rate of the burner fire cover ignition.

[0011] Preferably, the burner fire cover further comprises an ignition hole, the cross section of the ignition hole is circular, and the ignition hole is arranged below the ignition groove.

[0012] In the present solution, the cross-sectional areas between the ignition hole and the ignition groove are different, so that the gas has different flow rates when passing through the ignition groove and the ignition hole. Therefore, when the gas pressure changes or fluctuates, it can be ignited through either the ignition hole or the ignition groove. The burner fire cover can adapt to a wider range of gas pressure fluctuations, which is beneficial to the success rate of ignition.

[0013] Preferably, the burner fire cover comprises a second air inlet passage, the inner diameter of the second air inlet passage is smaller than the inner diameter of the ignition hole, and the ignition hole is connected to the air mixing chamber through the second air inlet passage.

[0014] In this solution, the ignition hole is connected to the mixing chamber through the second air intake channel. The cross-sectional area of ​​the second air intake channel is smaller than the cross-sectional area of ​​the ignition hole, so that when the gas passes through the second air intake channel and the ignition hole in sequence, the channel through which the gas can flow becomes wider and the flow rate of the gas slows down, thereby increasing the success rate of ignition of the burner fire cover.

[0015] Preferably, the first air intake passage is connected to the ignition groove and the ignition hole at the same time.

[0016] In this solution, through the above-mentioned arrangement, the ignition groove, the ignition hole and the first air inlet channel are interconnected. When some of the channels are blocked, the gas can also flow out through other channels, so that ignition can be carried out smoothly, increasing the success rate of ignition of the burner fire cover.

[0017] Preferably, a first protrusion is provided on the top of the mixing chamber, and the first protrusion is consistent with the extension direction of the first air inlet channel.

[0018] The first air inlet passage passes through the first protrusion and extends toward the direction approaching the air mixing chamber.

[0019] In this solution, through the above-mentioned arrangement, the length of the first air inlet passage is increased, which can stabilize the flow rate of the gas passing through the first air inlet passage, while avoiding increasing the cover thickness of the burner fire cover, thereby ensuring the volume of the mixing chamber.

[0020] Preferably, the second air inlet passage passes through the first protrusion and extends toward the direction approaching the air mixing chamber.

[0021] Through the above arrangement, the length of the second air inlet passage is increased, the flow rate of the gas passing through the second air inlet passage can be stabilized, while the thickness of the cover of the burner fire cover is avoided to ensure the volume of the mixing chamber.

[0022] Preferably, the burner fire cover further comprises a first fire-keeping hole, and an angle exists between the first fire-keeping hole and the ignition groove in the circumferential direction of the burner fire cover;

[0023] The first fire protection hole includes a first portion and a second portion, the first portion extends along the axial direction of the burner fire cover and communicates with the gas mixing chamber, and the second portion communicates with the first portion and the outer side of the side wall.

[0024] In this solution, through the above-mentioned settings, the anti-blocking ability of the burner fire cover can be improved, the risk of blockage of the first fire protection hole can be reduced, and it is beneficial for the burner fire cover to maintain the stability of the flame under various combustion conditions.

[0025] Preferably, the first fire protection hole includes two first parts, the two first parts are connected to the second part, and the two first parts are spaced apart in the extension direction of the second part.

[0026] In this solution, through the above arrangement, the anti-blocking ability of the burner fire cover can be improved, and the risk of blockage of the first fire-keeping hole can be reduced. The multiple first parts are provided to increase the channel area for the gas to enter the first fire-keeping hole, so that the first fire-keeping hole can achieve a fire-keeping effect under different gas pressures, which is beneficial for the burner fire cover to maintain the stability of the flame under various combustion conditions.

[0027] Preferably, the second portion extends in a horizontal direction.

[0028] In this solution, through the above arrangement, liquid overflowing from the pot is not easy to flow into the second part, thereby reducing the risk of clogging of the first fire-keeping hole.

[0029] Preferably, a second protrusion is provided on the top of the gas mixing chamber, the second protrusion is consistent with the extension direction of the second portion, and the first fire protection hole is provided in the second protrusion.

[0030] In this solution, by providing a second protrusion, the length of the second air inlet passage is increased, which can stabilize the flow rate of the gas passing through the first fire protection hole, thereby facilitating the fire protection effect of the burner fire cover, while avoiding increasing the cover thickness of the burner fire cover and ensuring the volume of the mixing chamber.

[0031] Preferably, the burner fire cover further comprises a second fire protection hole, wherein the second fire protection hole is arranged below the first fire protection hole, and the second fire protection hole extends upward while extending toward the outer side wall of the burner fire cover.

[0032] In the present scheme, through the above-mentioned arrangement, the gas flow rate through the first fire-keeping hole is different from the gas flow rate through the second fire-keeping hole, and the burner fire cover can adapt to a larger range of gas pressure fluctuations; the gas airflow of the first fire-keeping hole and the gas airflow of the second fire-keeping hole are staggered and collide with each other, and pull each other, which is beneficial to the fire-keeping effect of the burner fire cover.

[0033] A burner comprises the burner fire cover mentioned above.

[0034] In this solution, by setting an ignition groove, the ignition groove extends in the horizontal direction. When the ignition pin is correspondingly located within the extended range of the ignition groove, ignition can be achieved through the ignition groove, which is beneficial to the ignition success rate of the burner fire cover. When there is a deviation in the installation of the burner fire cover, ignition can still be performed. The ignition groove is connected to the gas mixing chamber through the first air intake channel. The cross-sectional area of ​​the first air intake channel is smaller than the cross-sectional area of ​​the ignition groove, so that when the gas passes through the first air intake channel and the ignition groove in sequence, the channel through which the gas can flow becomes wider and the flow rate of the gas slows down, thereby increasing the success rate of the burner fire cover ignition.

[0035] The positive and progressive effects of the utility model are:

[0036] By setting the ignition groove, the ignition groove extends in the horizontal direction. When the ignition pin is correspondingly located within the extended range of the ignition groove, ignition can be achieved through the ignition groove, which is beneficial to the ignition success rate of the burner fire cover. When there is a deviation in the installation of the burner fire cover, ignition can still be performed. The ignition groove is connected to the gas mixing chamber through the first air intake channel. The cross-sectional area of ​​the first air intake channel is smaller than the cross-sectional area of ​​the ignition groove, so that when the gas passes through the first air intake channel and the ignition groove in sequence, the channel through which the gas can flow becomes wider, and the flow rate of the gas slows down, thereby increasing the success rate of the burner fire cover ignition. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 The utility model is a three-dimensional structural schematic diagram of a burner fire cover according to an embodiment of the present invention.

[0038] Figure 2 It is a schematic diagram of the three-dimensional structure of a burner fire cover from another perspective of an embodiment of the utility model.

[0039] Figure 3 It is a schematic diagram of the three-dimensional structure of a burner fire cover from another perspective of an embodiment of the utility model.

[0040] Figure 4 It is a schematic cross-sectional structure diagram of a burner fire cover according to an embodiment of the utility model, wherein the ignition slot is shown.

[0041] Figure 5 It is a schematic cross-sectional structure diagram of a burner fire cover along another direction according to an embodiment of the utility model, wherein the first fire protection hole is shown.

[0042] Description of reference numerals:

[0043] Burner fire cover 100

[0044] Cover 1

[0045] Side wall 2

[0046] Mixing chamber 3

[0047] Ignition slot 41

[0048] First intake passage 42

[0049] Ignition hole 51

[0050] Second air intake passage 52

[0051] First protrusion 6

[0052] First fire hole 7

[0053] Part 171

[0054] Part 272

[0055] Second fire protection hole 8

[0056] Second protrusion 9 DETAILED DESCRIPTION

[0057] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0058] This embodiment provides a burner fire cover 100, such as Figure 1 and Figure 4As shown, the burner fire cover 100 includes a cover 1 and an annular side wall 2, the cover 1 and the side wall 2 enclose an air mixing chamber 3, the burner fire cover 100 also includes an ignition groove 41, the outlet of the ignition groove 41 extends horizontally outside the side wall 2; the burner fire cover 100 also includes a first air inlet channel 42, the inner diameter of the first air inlet channel 42 is smaller than the width of the ignition groove 41 near the air mixing chamber 3, and the ignition groove 41 is connected to the air mixing chamber 3 through the first air inlet channel 42. Among them, the burner fire cover 100 is an inner ring fire cover.

[0059] By setting the ignition groove 41, the ignition groove 41 extends in the horizontal direction. When the ignition pin is located within the extended range of the ignition groove 41, ignition can be achieved through the ignition groove 41, which is beneficial to the ignition success rate of the burner fire cover 100. When there is a deviation in the installation of the burner fire cover 100, ignition can still be performed. The ignition groove 41 is connected to the gas mixing chamber 3 through the first air intake channel 42. The cross-sectional area of ​​the first air intake channel 42 is smaller than the cross-sectional area of ​​the ignition groove 41, so that when the gas passes through the first air intake channel 42 and the ignition groove 41 in sequence, the channel through which the gas can flow becomes wider and the flow rate of the gas slows down, thereby increasing the success rate of ignition of the burner fire cover 100.

[0060] As a preferred embodiment, the cover 1 includes an ignition needle protective umbrella, which extends outward along the circumference of the cover 1, and the ignition groove 41 and the ignition hole 51 are both arranged below the ignition needle protective umbrella.

[0061] As a preferred implementation, Figure 1 and Figure 4 As shown, the burner fire cover 100 further includes an ignition hole 51 , the cross section of the ignition hole 51 is circular, and the ignition hole 51 is arranged below the ignition groove 41 .

[0062] The cross-sectional areas between the ignition hole 51 and the ignition groove 41 are different, so that the gas has different flow rates when passing through the ignition groove 41 and the ignition hole 51. Therefore, when the gas pressure changes or fluctuates, it can be ignited through either the ignition hole 51 or the ignition groove 41. The burner fire cover 100 can adapt to a wider range of gas pressure fluctuations, which is beneficial to the success rate of ignition.

[0063] In a preferred embodiment, the burner fire cover 100 may further include a plurality of ignition holes 51 , and the plurality of ignition holes 51 may be arranged at intervals along the height direction or the circumferential direction of the burner fire cover 100 . Furthermore, the plurality of ignition holes 51 may also be arranged to have different cross-sectional sizes.

[0064] As a preferred implementation, Figure 4As shown, the burner fire cover 100 includes a second air inlet passage 52 , the inner diameter of the second air inlet passage 52 is smaller than the inner diameter of the ignition hole 51 , and the ignition hole 51 is connected to the gas mixing chamber 3 through the second air inlet passage 52 .

[0065] The ignition hole 51 is connected to the mixing chamber 3 through the second air intake channel 52. The cross-sectional area of ​​the second air intake channel 52 is smaller than the cross-sectional area of ​​the ignition hole 51, so that when the gas passes through the second air intake channel 52 and the ignition hole 51 in sequence, the channel through which the gas can flow becomes wider and the flow rate of the gas slows down, thereby increasing the success rate of ignition of the burner fire cover 100.

[0066] As a preferred implementation, Figure 4 As shown, the first intake passage 42 is connected to the ignition groove 41 and the ignition hole 51 at the same time.

[0067] Through the above arrangement, the ignition groove 41, the ignition hole 51 and the first air inlet channel 42 are interconnected. When some of the channels are blocked, the gas can also flow out through other channels, so that ignition can be carried out smoothly, increasing the success rate of ignition of the burner fire cover 100.

[0068] In this embodiment, the first air inlet passage 42 and the second air inlet passage 52 are set to have the same cross-sectional size. In other alternative embodiments, the first air inlet passage 42 and the second air inlet passage 52 can be set to have different shapes and cross-sectional sizes; the first air inlet passage 42 can only be connected to the ignition slot 41, and the second air inlet passage 52 can only be connected to the ignition hole 51.

[0069] As a preferred implementation, Figure 3 and Figure 4 As shown, a first protrusion 6 is provided on the top of the mixing chamber 3 , and the first protrusion 6 is consistent with the extension direction of the first air inlet channel 42 . The first air inlet channel 42 penetrates the first protrusion 6 and extends in a direction close to the mixing chamber 3 .

[0070] Through the above arrangement, the length of the first air inlet channel 42 is increased, and the flow rate of the gas passing through the first air inlet channel 42 can be stabilized, while avoiding increasing the thickness of the cover portion 1 of the burner fire cover 100, thereby ensuring the volume of the mixing chamber 3.

[0071] As a preferred implementation, Figure 2 and Figure 4 As shown, the second air inlet passage 52 passes through the first protrusion 6 and extends toward the direction close to the air mixing chamber 3 .

[0072] Through the above arrangement, the length of the second air inlet channel 52 is increased, and the flow rate of the gas passing through the second air inlet channel 52 can be stabilized, while avoiding increasing the thickness of the cover portion 1 of the burner fire cover 100, thereby ensuring the volume of the mixing chamber 3.

[0073] As a preferred implementation, Figure 2 and Figure 5 As shown, the burner fire cover 100 also includes a first fire protection hole 7, and there is an angle between the first fire protection hole 7 and the ignition groove 41 in the circumferential direction of the burner fire cover 100; the first fire protection hole 7 includes a first part 71 and a second part 72, the first part 71 extends along the axial direction of the burner fire cover 100 and is connected to the gas mixing chamber 3, and the second part 72 is connected to the first part 71 and the outer side of the side wall 2.

[0074] In this embodiment, the angle between the first flame-keeping hole 7 and the ignition groove 41 is 90°. In other alternative embodiments, multiple first flame-keeping holes 7 can be arranged at circumferential intervals on the burner fire cover 100, and the angle between the first flame-keeping holes 7 and the ignition groove 41 is not zero.

[0075] Through the above arrangement, the anti-blocking capability of the burner fire cover 100 can be improved, the risk of blockage of the first fire protection hole 7 can be reduced, and it is beneficial for the burner fire cover 100 to maintain the stability of the flame under various combustion conditions.

[0076] As a preferred implementation, Figure 5 As shown, the first fire protection hole 7 includes two first parts 71 , the two first parts 71 are both connected to the second part 72 , and the two first parts 71 are spaced apart in the extension direction of the second part 72 .

[0077] Through the above arrangement, the anti-blocking capability of the burner fire cover 100 can be improved, and the risk of blockage of the first fire protection hole 7 can be reduced. The plurality of first parts 71 are provided to increase the channel area for the gas to enter the first fire protection hole 7, so that the first fire protection hole 7 can achieve a fire protection effect under different gas pressures, which is beneficial for the burner fire cover 100 to maintain the stability of the flame under various combustion conditions.

[0078] As a preferred implementation, Figure 5 As shown, the second portion 72 extends in a horizontal direction.

[0079] Through the above arrangement, it is difficult for the liquid to flow into the second part 72 when the pot overflows, thereby reducing the risk of clogging of the first fire-keeping hole 7.

[0080] As a preferred implementation, Figure 3 and Figure 5 As shown, a second protrusion 9 is provided on the top of the gas mixing chamber 3 , the second protrusion 9 and the second portion 72 extend in the same direction, and the first fire protection hole 7 is provided in the second protrusion 9 .

[0081] By providing the second protrusion 9, the length of the second air inlet channel 52 is increased, which can stabilize the flow rate of the gas through the first fire protection hole 7, thereby facilitating the fire protection effect of the burner fire cover 100, while avoiding increasing the thickness of the cover 1 of the burner fire cover 100 and ensuring the volume of the mixing chamber 3.

[0082] As a preferred implementation, Figure 5 As shown, the burner fire cover 100 further includes a second fire protection hole 8 , which is disposed below the first fire protection hole 7 , and extends upward while extending toward the outer side wall 2 of the burner fire cover 100 .

[0083] Through the above-mentioned arrangement, the gas flow rate through the first fire protection hole 7 is different from the gas flow rate through the second fire protection hole 8, and the burner fire cover 100 can adapt to a larger range of gas pressure fluctuations; the gas airflow of the first fire protection hole 7 and the gas airflow of the second fire protection hole 8 are staggered and collide with each other, and pull each other, which is beneficial to the fire protection effect of the burner fire cover 100.

[0084] This embodiment further provides a burner, which includes the burner fire cover 100 mentioned above.

[0085] By setting the ignition groove 41, the ignition groove 41 extends in the horizontal direction. When the ignition pin is located within the extended range of the ignition groove 41, ignition can be achieved through the ignition groove 41, which is beneficial to the ignition success rate of the burner fire cover 100. When there is a deviation in the installation of the burner fire cover 100, ignition can still be performed. The ignition groove 41 is connected to the gas mixing chamber 3 through the first air intake channel 42. The cross-sectional area of ​​the first air intake channel 42 is smaller than the cross-sectional area of ​​the ignition groove 41, so that when the gas passes through the first air intake channel 42 and the ignition groove 41 in sequence, the channel through which the gas can flow becomes wider and the flow rate of the gas slows down, thereby increasing the success rate of ignition of the burner fire cover 100.

[0086] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A burner fire cover, comprising a cover portion and an annular side wall, wherein the cover portion and the side wall enclose a gas mixing chamber, characterized in that: The burner fire cover also includes an ignition groove, the outlet of which extends horizontally on the outer side of the side wall; The burner fire cover also includes a first air inlet passage, the inner diameter of which is smaller than the width of the ignition groove on one side close to the air mixing chamber. The ignition groove is connected to the air mixing chamber through the first air intake passage.

2. The burner cap according to claim 1, characterized in that: The burner fire cover also includes an ignition hole, the cross section of which is circular, and the ignition hole is arranged below the ignition groove.

3. The burner cap according to claim 2, characterized in that: The burner fire cover comprises a second air inlet passage, the inner diameter of the second air inlet passage is smaller than the inner diameter of the ignition hole, and the ignition hole is connected to the air mixing chamber through the second air inlet passage.

4. The burner cap according to claim 3, characterized in that: The first air intake passage is connected to the ignition groove and the ignition hole at the same time.

5. The burner cap according to claim 4, characterized in that: A first protrusion is provided on the top of the mixing chamber, and the first protrusion is consistent with the extension direction of the first air inlet channel. The first air inlet passage passes through the first protrusion and extends in a direction close to the air mixing chamber; And / or, the second air intake passage passes through the first protrusion and extends toward the direction close to the air mixing chamber.

6. The burner cap according to claim 1, characterized in that: The burner fire cover further comprises a first fire-keeping hole, wherein the first fire-keeping hole and the ignition groove form an angle in the circumferential direction of the burner fire cover; The first fire protection hole includes a first portion and a second portion, the first portion extends along the axial direction of the burner fire cover and communicates with the gas mixing chamber, and the second portion communicates with the first portion and the outer side of the side wall.

7. The burner cap according to claim 6, characterized in that: The first fire protection hole includes two first parts, the two first parts are connected to the second part, and the two first parts are spaced apart in the extension direction of the second part.

8. The burner cap according to claim 6, characterized in that: The second portion extends in a horizontal direction.

9. The burner cap according to claim 6, characterized in that: A second protrusion is provided on the top of the gas mixing chamber, the second protrusion is consistent with the extension direction of the second part, and the first fire protection hole is provided in the second protrusion; And / or, the burner fire cover further includes a second fire protection hole, the second fire protection hole is arranged below the first fire protection hole, and the second fire protection hole extends upward while extending toward the outer side wall of the burner fire cover.

10. A burner, characterized in that: The burner comprises a burner fire cover as claimed in any one of claims 1-9.

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