Fire cover and stove comprising same
By setting an inclined first ignition hole and a recessed area on the fire cover, the problem of low ignition success rate of the existing fire cover is solved, and a higher ignition capability is achieved.
Patent Information
- Application Number
- CN202420481037.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-13
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-03-13
AI Technical Summary
The structure design of the existing fire cover is relatively simple, resulting in a low ignition success rate. Especially when the fire hole is blocked or the position is inappropriate, it will significantly reduce the ignition effect.
A plurality of first ignition holes are provided on the fire cover, arranged in an inclined upward in the radial direction from inside to outside, and a recessed area is provided on the side wall, the upper wall surface and the lower wall surface of the recessed area intersect and extend to the first ignition hole to communicate with the recessed area.
Through the collision between the gas and the depression area, concentration difference and gas disturbances are formed, which improves the degree of gas disturbances in the ignition area and enhances the ignition ability.
Smart Images
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Abstract
Description
Technical Field
[0001] The utility model relates to the field of stoves, in particular to a fire cover and a stove comprising the same. Background Art
[0002] Common household burners generally have a fire cover, together with ignition needles, thermocouples (or ion sensing needles with equivalent functions) and other components to achieve functions such as generating flames and maintaining flames. The ignition needles and thermocouples are mainly arranged around the fire cover. The fire cover will have ignition holes and other fire outlet holes. However, the structural design of the ignition point of many fire covers is relatively simple, and basically one ignition hole is designed for targeted use. Blockage of this fire hole or separation of this fire hole from the flame will reduce the success rate of ignition. For this reason, it is necessary to further improve the structure of the fire cover. Utility Model Content
[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a fire cover and a stove including the same.
[0004] The utility model solves the above technical problems through the following technical solutions:
[0005] A fire cover, which has a plurality of first ignition holes in the circumferential direction thereof, wherein the plurality of first ignition holes are arranged upwardly and obliquely from the inside to the outside along the radial direction of the fire cover, and the ends of the plurality of first ignition holes are arranged in the wall of the fire cover; the side wall of the fire cover has a recessed area recessed toward the inside of the fire cover, wherein the recessed area includes an upper wall surface and a lower wall surface, wherein the plane where the upper wall surface is located intersects with the plane where the lower wall surface is located, and the upper wall surface and the lower wall surface both extend to the first ignition holes so as to connect the recessed area with the first ignition holes.
[0006] By setting a recessed area on the fire cover, the plane where the upper wall of the recessed area is located intersects with the plane where the lower wall is located, and the upper wall and the lower wall of the recessed area both extend to the first ignition hole so that the recessed area and the first ignition hole are connected. After the gas mixture is ejected from the inside of the fire cover, it will collide with the upper wall of the recessed area. The different distances from the ejection position of the gas mixture of different first ignition holes to the upper wall of the recessed area result in different degrees of collision intensity and secondary mixing degree of the gas mixture and air, forming a concentration difference, increasing the disturbance degree of the gas in the ignition area, and enhancing the ignition ability.
[0007] Preferably, the longitudinal cross-section of the recessed area is a "V"-shaped groove.
[0008] By setting the recessed area as a "V"-shaped groove with a longitudinal cross section, it is not only easy to process but also difficult to hide dirt and easy to clean.
[0009] Preferably, the plane where the upper wall surface of the recessed area is located is a horizontal plane, and the plane where the lower wall surface of the recessed area is located is a plane inclined downward from inside to outside.
[0010] Compared with the upper wall being inclined upward, the upper wall being horizontally arranged can better hide the first ignition hole, making the first ignition hole less likely to be blocked. At the same time, the angle between the upper wall and the first ignition hole is smaller, which can enhance the collision between the gas and the upper wall. Compared with the upper wall being inclined downward, the upper wall being horizontally arranged makes the height of the gas diffusing outward after the collision with the upper wall closer to the discharge area of the ignition needle, which is helpful for ignition.
[0011] Preferably, the first ignition hole includes an air outlet hole, a connecting area and a mixing chamber which are sequentially arranged from bottom to top, the connecting area partially overlaps with the recessed area, and the plurality of the first ignition holes are symmetrical about the middle of the recessed area.
[0012] By setting the first ignition hole symmetrically about the middle of the recessed area, with the middle of the recessed area as the center and along the circumference of the fire cover, the gas concentrations at symmetrical positions are similar and the gas flow fields are similar, which helps ignition.
[0013] Preferably, the middle air outlet is directly connected to the communication area; parts of the air outlets on both sides are directly connected to the communication area, and the remaining parts are directly connected to the mixing chamber.
[0014] Compared with setting each first ignition hole as an air outlet hole connected with the mixing chamber through a connecting area, setting the air outlet holes on both sides to partially directly connect with the mixing chamber increases the difference in the degree of mixing of gas and air at different positions and enhances the ignition ability of the fire cover.
[0015] Preferably, the diameters of the plurality of first ignition holes are the same, and the depths of the plurality of first ignition holes are the same.
[0016] The aperture and depth of the first ignition hole are set to be the same for easy processing. At the same time, since the sizes of the air outlet holes and the connecting areas of different first ignition holes are different, the sizes of the mixing chambers are also different. After part of the gas flows from the air outlet to the mixing chamber and the degree of mixing with the air in the mixing chamber is also different, the ignition capability is enhanced.
[0017] Preferably, the fire cover is further provided with a plurality of second ignition holes, and the plurality of second ignition holes extend horizontally outward along the radial direction of the fire cover and are connected to the outside.
[0018] By setting a second ignition hole extending horizontally outward, the gas outlet of the second ignition hole is not blocked. When the gas pressure in the pipeline is low, the gas flows out from the unblocked second ignition hole with a high gas concentration, thereby improving the ignition ability of the stove.
[0019] Preferably, the second ignition hole is arranged below the first ignition hole, and the air outlet of the second ignition hole is at least partially arranged on the lower wall surface of the recessed area.
[0020] By setting the air outlet of the second ignition hole at least partially on the lower wall surface of the recessed area, compared with setting the entire side wall outside the recessed area, the air outlet area of the second ignition hole is larger, which is more conducive to the outflow of gas from the air outlet of the second ignition hole, thereby improving the ignition ability.
[0021] Preferably, the diameter of the second ignition hole gradually increases from the middle of the recessed area to both sides.
[0022] By setting the aperture of the second ignition hole to gradually increase from the middle of the recessed area to both sides, the concentration difference is increased and the ignition capability is improved.
[0023] A stove comprises the fire cover as described above.
[0024] The positive progressive effect of the utility model is that: by arranging a recessed area on the fire cover, the plane where the upper wall of the recessed area is located intersects with the plane where the lower wall is located, and the upper wall and the lower wall of the recessed area both extend to the first ignition hole so that the recessed area and the first ignition hole are connected, and the gas mixture will collide with the upper wall of the recessed area after being ejected from the inside of the fire cover, and the different distances from the ejection position of the gas mixture of different first ignition holes to the upper wall of the recessed area result in different degrees of collision intensity and different degrees of secondary mixing of the gas mixture and air, forming a concentration difference, increasing the disturbance degree of the gas in the ignition area, and enhancing the ignition ability. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 The figure is a schematic structural diagram of a fire cover according to a preferred embodiment of the utility model.
[0026] Figure 2 The figure is a side view of a fire cover according to a preferred embodiment of the utility model.
[0027] Figure 3 The figure is a schematic cross-sectional structure diagram of a fire cover according to a preferred embodiment of the utility model.
[0028] Figure 4 The utility model is a front view of a fire cover of a preferred embodiment.
[0029] Figure 5 The figure is a schematic structural diagram of an ignition hole of a fire cover according to a preferred embodiment of the utility model.
[0030] Description of reference numerals:
[0031] Fire cover 001
[0032] First ignition hole 110
[0033] Vent 111
[0034] Connected area 112
[0035] Mixing chamber 113
[0036] The second ignition hole 120
[0037] Air outlet 121
[0038] Recessed area 130
[0039] Upper wall 131
[0040] Lower wall 132 DETAILED DESCRIPTION
[0041] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.
[0042] like Figure 1-Figure 5 As shown, the present embodiment provides a fire cover 001, which includes a plurality of first ignition holes 110 arranged along the circumferential direction of the fire cover 001, and the plurality of first ignition holes 110 are arranged inclined upward from the inside to the outside along the radial direction of the fire cover 001, and the ends of the plurality of first ignition holes 110 are arranged on the inner side of the wall of the fire cover 001, and the side wall of the fire cover 001 has a recessed area 130 recessed toward the inside of the fire cover 001, and the recessed area 130 includes an upper wall surface 131 and a lower wall surface 132, wherein a plane where the upper wall surface 131 is located intersects with a plane where the lower wall surface 132 is located, and the upper wall surface 131 and the lower wall surface 132 both extend to the first ignition hole 110, so that the recessed area 130 is connected to the first ignition hole 110. By setting a recessed area 130 on the fire cover 001, the plane where the upper wall 131 of the recessed area 130 is located intersects with the plane where the lower wall 132 is located, and the upper wall 131 and the lower wall 132 of the recessed area 130 both extend to the first ignition hole 110 to connect the recessed area 130 and the first ignition hole 110. After the gas mixture is ejected from the inside of the fire cover 001, it will collide with the upper wall 131 of the recessed area 130, and the different distances from the ejection position of the gas mixture of different first ignition holes 110 to the upper wall 131 of the recessed area 130 result in different degrees of collision intensity and secondary mixing degree of the gas mixture and air, forming a concentration difference, increasing the disturbance degree of the gas in the ignition area, and enhancing the ignition ability.
[0043] Specifically, in the present embodiment, the first ignition hole 110 is connected to the outside through the recessed area 130, and the end of the first ignition hole 110 extends to the inner side of the side wall of the fire cover 001 without penetrating the side wall of the fire cover 001. In other embodiments, if the extension direction of the first ignition hole 110 does not intersect with the side wall of the fire cover 001, the first ignition hole 110 can extend to the top wall of the fire cover 001 but does not penetrate the top wall.
[0044] In addition, in the present embodiment, the first ignition hole 110 is connected to the outside through the recessed area 130, and the upper wall 131 and the lower wall 132 of the recessed area 130 extend to completely cut off the first ignition hole 110 in the middle, while the first ignition holes 110 on both sides are not completely cut off by the recessed area, and the first ignition holes 110 on both sides are partially connected to the recessed area. Such an arrangement makes the concentration difference of the gas mixture sprayed from the first ignition hole 110 in the middle and the first ignition holes 110 on both sides greater after secondary mixing. In other embodiments, the upper wall 131 and the lower wall 132 of the recessed area 130 may also completely cut off all the first ignition holes 110, or may not completely cut off all the first ignition holes 110.
[0045] In this embodiment, if Figure 2 and Figure 3 As shown, the longitudinal section of the recessed area 130 is a "V"-shaped groove. In fact, in addition to the longitudinal section, the side view of the recessed area 130 is also a "V"-shaped groove. By setting the recessed area 130 as a "V"-shaped groove in the longitudinal section, it is not only easy to process, but also difficult to hide dirt and easy to clean.
[0046] Of course, in other embodiments, there may also be a transition surface between the upper wall 131 and the lower wall 132 of the recessed area 130. When the angles between the upper wall 131 and the lower wall 132 are the same, adding the transition surface can make the connection area between the recessed area 130 and the first ignition hole 110 larger, thereby increasing the air content. The transition surface can be set according to actual needs.
[0047] In this embodiment, if Figure 2 and Figure 3As shown, the plane where the upper wall 131 of the recessed area 130 is located is a horizontal plane, and the plane where the lower wall 132 of the recessed area 130 is located is a plane inclined downward from the inside to the outside. Compared with the upper wall 131 inclined upward, the horizontal setting of the upper wall 131 can better hide the first ignition hole 110, so that the first ignition hole 110 is not easy to be blocked. At the same time, the angle between the upper wall 131 and the first ignition hole 110 is smaller, which can enhance the collision between the gas and the upper wall 131; compared with the upper wall 131 inclined downward, the horizontal setting of the upper wall 131 makes the height of the gas spreading outward after the collision with the upper wall 131 closer to the discharge area of the ignition needle, which is helpful for ignition.
[0048] Of course, in other embodiments, as long as the extension direction of the first ignition hole 110 is able to intersect with the plane where the upper wall 131 is located, it is possible to extend the upper wall 131 to communicate with the first ignition hole 110, and achieve the purpose of enhancing the gas concentration difference near each first ignition hole 110 to improve the ignition capability.
[0049] In this embodiment, if Figure 1 , Figure 3 and Figure 5 As shown, the upper wall 131 and the lower wall 132 of the recessed area 130 extend to intersect with the first ignition hole 110, and the recessed area 130 partially overlaps with the first ignition hole 110. The first ignition hole 110 includes an air outlet 111, a connecting area 112 and a mixing chamber 113, wherein the connecting area 112 is the overlapping portion of the first ignition hole 110 and the recessed area 130, and the multiple first ignition holes 110 are symmetrical about the middle of the recessed area 130, that is, with the middle of the recessed area 130 as the center and along the circumference of the fire cover 001, the sizes of the air outlet holes 111, the connecting area 112 and the mixing chamber 113 at symmetrical positions are equal, and the flow fields at the symmetrical positions are similar. The ignition needle of the stove is set near the middle of the recessed area 130, and the flow fields on both sides of the ignition needle are similar along the circumference of the fire cover 001, which is helpful for ignition.
[0050] At the same time, the apertures and depths of the multiple first ignition holes 110 are the same, which is convenient for processing. Since the recessed area 130 is a groove, the air inlets of the multiple first ignition holes 110 are at the same height, and the angles formed by the extension directions of the multiple first air inlets and the horizontal plane are also the same. After the recessed area 130 extends to connect with the multiple first ignition holes 110, the depths of the multiple air outlets 111 are different, the depths of the multiple connecting areas 112 are different, and the depths of the multiple mixing chambers 113 are also different. Therefore, after a part of the gas flows from the gas outlet 121 to the mixing chamber 113, the degree of mixing with the air in the mixing chamber 113 is also different, thereby enhancing the ignition capability.
[0051] In this embodiment, a plurality of second ignition holes 120 are further provided on the fire cover 001. The plurality of second ignition holes 120 extend outward horizontally along the radial direction of the fire cover 001 and are connected to the outside. The gas outlets 121 thereof are not blocked in any way. When the gas pressure in the pipeline is low, the gas flows out from the unblocked second ignition holes 120 and the gas concentration is high, thereby improving the ignition capability of the stove.
[0052] Specifically, if Figure 1 , Figure 3 and Figure 4 As shown, the air inlets of the second ignition hole 120 and the first ignition hole 110 are at the same position, the first ignition hole 110 extends upwardly from the inside to the outside at an angle, while the second ignition hole 120 extends horizontally from the inside to the outside, and the air outlet 121 of the second ignition hole 120 is at least partially arranged on the lower wall 132 of the recessed area 130. Compared with the scheme in which the air outlet 121 of the second ignition hole 120 is entirely arranged on the side wall outside the recessed area 130, the air outlet 121 of the second ignition hole 120 has a larger area, which is more conducive to the gas flowing out of the air outlet 121 of the second ignition hole 120, thereby improving the ignition capability.
[0053] This embodiment further provides a stove, which includes the fire cover 001 as described above. By arranging the fire cover 001 as described above in the stove, the stove has a better ignition capability.
[0054] 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 fire cover, characterized in that: The fire cover has a plurality of first ignition holes in the circumferential direction, the plurality of first ignition holes are arranged in an inclined manner upward from the inside to the outside along the radial direction of the fire cover, and the ends of the plurality of first ignition holes are arranged in the wall of the fire cover; The side wall of the fire cover has a recessed area recessed toward the interior of the fire cover, the recessed area includes an upper wall surface and a lower wall surface, the plane where the upper wall surface is located intersects with the plane where the lower wall surface is located, and the upper wall surface and the lower wall surface both extend to the first ignition hole so that the recessed area is connected to the first ignition hole.
2. The fire cover according to claim 1, characterized in that: The longitudinal cross-section of the recessed area is a "V"-shaped groove.
3. The fire cover according to claim 2, characterized in that: The plane where the upper wall surface of the recessed area is located is a horizontal plane, and the plane where the lower wall surface of the recessed area is located is a plane inclined downward from the inside to the outside.
4. The fire cover according to claim 1, characterized in that: The first ignition hole includes an air outlet hole, a connecting area and a mixing chamber arranged in sequence from bottom to top, the connecting area partially overlaps with the recessed area, and the plurality of first ignition holes are symmetrical about the middle of the recessed area.
5. The fire cover according to claim 4, characterized in that The middle air outlet is directly connected to the communication area; parts of the air outlets on both sides are directly connected to the communication area, and the remaining parts are directly connected to the mixing chamber.
6. The fire cover according to claim 1, characterized in that The diameters of the plurality of first ignition holes are the same, and the depths of the plurality of first ignition holes are the same.
7. The fire cover according to claim 1, characterized in that The fire cover is also provided with a plurality of second ignition holes, which extend horizontally outward in the radial direction of the fire cover and are communicated with the outside.
8. The fire cover according to claim 7, characterized in that The second ignition hole is disposed below the first ignition hole, and an air outlet of the second ignition hole is at least partially disposed on a lower wall surface of the recessed area.
9. The fire cover according to claim 7, characterized in that The diameter of the second ignition hole gradually increases from the middle of the recessed area to both sides.
10. A cooking appliance, characterized in that: The stove comprises the fire cover according to any one of claims 1 to 9.