Combustor and stove

Abstract

The utility model relates to the field of kitchen utensils, and particularly discloses a burner and a stove. The combustor comprises an outer ring fire cover; the outer ring fire cover sequentially comprises an upper ring, a middle ring and a lower ring; a first fire outlet circular seam is formed between the upper ring and the middle ring, a second fire outlet circular seam is formed between the middle ring and the lower ring, and a groove extending in the radial direction of the outer ring fire cover is formed in the surface, opposite to the middle ring, of the upper ring. A groove extending in the radial direction of an outer ring fire cover is formed in the upper side wall of a first fire outlet circular seam of the combustor, namely the surface, opposite to a middle ring, of an upper ring, when airflow flows out of the bottom of the first fire outlet circular seam, part of airflow flows out of the groove, and under the guiding effect of the groove, the airflow obtains the stable speed and direction; and the unstable state of airflow of the annular air outlet is reduced, the large-flow and low-resistance effects of the annular seam under the flow can be guaranteed, and meanwhile stable airflow can be generated. And flames spread stably in the combustion process.

Description

Technical Field

[0001] This utility model relates to the field of kitchen utensils, and in particular to a burner and stove. Background Technology

[0002] Existing slit-hole burners have burner caps with several annular air outlets connected by a connecting structure. Airflow exits from the mixing chamber through these outlets. A larger annular air outlet circumference results in lower airflow resistance, higher airflow velocity, and increased flame velocity, thus improving heat exchange. Conversely, a smaller circumference increases resistance and decreases flame velocity. Typically, 3-6 connecting or guiding structures are selected.

[0003] When the primary air volume is greater than 0.7, the flame velocity is relatively high in the annular slit venting flame cap structure, and the flame forms an annular curtain shape. The slit flame does not have a good guiding and limiting effect in the circumferential direction (the circumference of the circular vent is guided and limited by the circular hole, and the flame is relatively stable). When the local pressure is uneven or unstable, some flames will produce violent shaking, inconsistent height, or flame detachment, which will have a significant impact on performance. Utility Model Content

[0004] The technical problem to be solved by this invention is how to ensure both low resistance and stability under the condition of large flow rate at the annular gas outlet, and to provide a burner and stove.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] A burner comprising: an outer ring flame cap;

[0007] The outer ring flame cap comprises, in sequence, an upper ring, a middle ring, and a lower ring;

[0008] A first flame-out seam is formed between the upper ring and the middle ring, and a second flame-out seam is formed between the middle ring and the lower ring. The surface of the upper ring opposite to the middle ring is provided with a groove extending radially along the outer ring flame cap.

[0009] In this design, the upper sidewall of the first flame outlet slit of the burner, i.e., the surface of the upper ring opposite the middle ring, is provided with a groove extending radially along the outer ring flame cap. When the airflow flows out from the bottom of the first flame outlet slit, part of the airflow flows out from the groove. Under the guidance of the groove, the airflow obtains a stable speed and direction, reducing the unstable state of the airflow at the annular outlet. This ensures both the high flow rate and low resistance effect of the slit at the specified flow rate and generates a stable airflow. The flame propagates stably during combustion.

[0010] Preferably, the groove extends from the outer peripheral edge of the upper ring to the bottom of the first firing ring slot.

[0011] In this design, the length of the groove is approximately the same as the depth of the first flame ring slit, thus achieving a better flow guiding effect and making the flame more stable.

[0012] Preferably, the cross-section of the groove is semi-circular, and / or the groove has a straight-line structure.

[0013] In this design, the groove with a semi-circular cross-section is easy to process, which can save manufacturing costs.

[0014] Preferably, the upper ring is provided with multiple sets of grooves, each set of grooves including multiple grooves arranged circumferentially along the outer ring flame cap, and the multiple sets of grooves are arranged at intervals along the circumferential direction of the outer ring flame cap.

[0015] In this design, the groove setting provides better airflow guidance, resulting in a more stable flame.

[0016] Preferably, both the first and second flame-out ring seams extend toward the center and below the outer ring flame cap in the radial direction.

[0017] Preferably, the lower end of the middle ring is provided with a plurality of perforations arranged circumferentially along the outer ring flame cap, the perforations connecting the first flame outlet ring seam and the second flame outlet ring seam.

[0018] Preferably, the bottom of the second flame outlet ring is closed, and a gas supply port is provided at the bottom of the first flame outlet ring, the gas supply port being connected to the mixing chamber of the burner.

[0019] In this design, the gas outlet of the second flame outlet ring is supplied by the first flame outlet ring, which serves to stabilize the flame.

[0020] Preferably, the burner further includes a base, which is disposed below the outer ring flame cap, and a mixing chamber is disposed inside the base.

[0021] Preferably, the upper part of the first ignition circumferential slit forms a circumferential cavity, the lower part of the first ignition circumferential slit forms a mixing cavity, the radial dimension of the mixing cavity is greater than the radial dimension of the circumferential cavity, the perforation is positioned corresponding to the mixing cavity, and the gas supply port is connected to the mixing cavity.

[0022] In this design, the gas is mixed before it exits the flame ring slit, which makes the flame more stable.

[0023] A stove that includes a burner as described above.

[0024] The significant advantages of this invention are as follows: the upper sidewall of the first flame outlet ring slot of the burner, i.e., the surface of the upper ring opposite to the middle ring, is provided with a groove extending radially along the outer ring flame cap. When the airflow flows out from the bottom of the first flame outlet ring slot, part of the airflow flows out from the groove. Under the guidance of the groove, the airflow obtains a stable speed and direction, reducing the unstable state of the airflow at the annular outlet. This ensures both the high flow rate and low resistance effect of the ring slot at the specified flow rate, while simultaneously generating a stable airflow. The flame propagates stably during combustion. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of a burner according to an embodiment of the present invention.

[0026] Figure 2 This is a cross-sectional structural diagram of a burner according to an embodiment of the present invention.

[0027] Figure 3 for Figure 2 An enlarged structural diagram of part A.

[0028] Figure 4 This is a three-dimensional structural diagram of the upper ring according to an embodiment of the present invention.

[0029] Figure 5 This is a three-dimensional structural diagram of the upper ring according to an embodiment of the present invention, viewed from below.

[0030] Figure 6 This is a three-dimensional structural diagram of the middle ring according to an embodiment of the present invention.

[0031] Figure 7 This is a three-dimensional structural diagram of the lower ring according to an embodiment of the present invention.

[0032] Figure 8 This is a three-dimensional structural diagram of a base according to an embodiment of the present invention.

[0033] Explanation of reference numerals in the attached drawings: Burner 100; Inner ring burner cap 110; Outer ring burner cap 120; Upper ring 121; Flame transfer hole 1211; Middle ring 122; Bottom cover 1221; Gas supply port 1223; Lower ring 123; Base plate 1231; Gas through hole 1233; Base 130; Mixing chamber 131; First flame outlet ring slit 140; First ring slit cavity 141; First mixing chamber 142; Second flame outlet ring slit 150; Second ring slit cavity 151; Second mixing chamber 152; Groove 160; Perforation 170. Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings and by way of embodiments, but the present invention is not limited to the scope of the embodiments thereon.

[0035] like Figure 1-8 As shown, this embodiment provides a burner 100, which includes an inner ring burner cap 110 and an outer ring burner cap 120.

[0036] The outer ring flame cover 120 includes, from top to bottom, an upper ring 121, a middle ring 122, and a lower ring 123.

[0037] A first flame-out ring slit 140 is formed between the upper ring 121 and the middle ring 122, and a second flame-out ring slit 150 is formed between the middle ring 122 and the lower ring 123. The surface of the upper ring 121 opposite to the middle ring 122 is provided with a groove 160 extending radially along the outer ring flame cap 120.

[0038] The upper sidewall of the first flame outlet annular slit 140 of the burner 100, i.e., the surface of the upper ring 121 opposite to the middle ring 122, is provided with a groove 160 extending radially along the outer ring flame cap 120. When the airflow flows out from the bottom of the first flame outlet annular slit 140, part of the airflow flows out from the groove 160. Under the guidance of the groove 160, the airflow obtains a stable speed and direction, reducing the unstable state of the airflow at the annular outlet. This ensures both the high flow rate and low resistance effect of the annular slit 123 at a given flow rate, and at the same time generates a stable airflow. The flame propagates stably during combustion.

[0039] The upper ring 121 is provided with a flame transmission hole 1211, through which the flame in the inner ring is transmitted to the flame in the outer ring.

[0040] The groove 160 extends from the outer periphery of the upper ring 121 to the bottom of the first flame ring slit 140. The length of the groove 160 is approximately the same as the depth of the first flame ring slit 140, thereby achieving a better flow guiding effect and making the flame more stable.

[0041] The groove 160 is formed into a straight line structure.

[0042] The groove 160 has a semi-circular cross-section. The semi-circular cross-section of the groove 160 is easy to process and can save manufacturing costs. Alternatively, the cross-section of the groove 160 can also be trapezoidal, rectangular, or other shapes.

[0043] The upper ring 121 is provided with multiple sets of grooves 160, each set of grooves 160 including multiple grooves 160 arranged along the circumference of the outer ring flame cap 120, and the multiple sets of grooves 160 are arranged at intervals along the circumference of the outer ring flame cap 120.

[0044] This 160-degree groove setting provides better airflow guidance, making the flame more stable.

[0045] In this embodiment, there are a total of four groups of grooves 160, and each group of grooves 160 includes six parallel grooves 160. However, the present invention is not limited to this, and those skilled in the art can select the number of groups of grooves 160 and the number of grooves 160 in each group as needed.

[0046] The first firing ring slit 140 and the second firing ring slit 150 both extend toward the center and below the outer ring flame cap 120 in the radial direction.

[0047] The lower end of the middle ring 122 is provided with a plurality of perforations 170 arranged circumferentially along the outer ring flame cap 120. The perforations 170 connect the first flame outlet ring slit 140 and the second flame outlet ring slit 150. The perforations 170 are circular holes. Through these perforations 170, the first flame outlet ring slit 140 and the second flame outlet ring slit 150 are connected, and flame can be emitted from both flame outlet ring slits by supplying gas to one of the flame outlet ring slits.

[0048] The bottom of the second flame outlet ring slit 150 is closed, and the bottom of the first flame outlet ring slit 140 is provided with a gas supply port 1223, which is connected to the mixing chamber 131 of the burner 100. The gas outlet of the second flame outlet ring slit 150 is supplied by the first flame outlet ring slit 140, which plays a role in stabilizing the flame.

[0049] The burner 100 also includes a base 130, which is located below the outer ring burner cap 120, and a mixing chamber 131 is provided inside the base 130.

[0050] The gas supply port 1223 is located on the bottom cover 1221 of the middle ring 122, corresponding to the position of the gas through hole 1233 on the bottom plate 1231 of the lower ring 123. The gas supply port 1223 and the gas through hole 1233 correspond to the positions of the mixing chamber 131 in the base 130. After the fuel gas enters the mixing chamber 131, it is mixed and then supplied to the first ignition ring slit 140 through the gas through hole 1233 and the gas supply port 1223.

[0051] The upper part of the first ignition circumferential slit 140 forms a first circumferential slit cavity 141, and the lower part of the first ignition circumferential slit 140 forms a first mixing cavity 142. The radial dimension of the first mixing cavity 142 is greater than the radial dimension of the first circumferential slit cavity 141. The perforation 170 is set at the position corresponding to the first mixing cavity 142, and the gas supply port 1223 is connected to the first mixing cavity 142.

[0052] The upper part of the second ignition ring slit 150 forms a second slit cavity 151, and the lower part of the second ignition ring slit 150 forms a second mixing cavity 152. The radial dimension of the second mixing cavity 152 is greater than the radial dimension of the second slit cavity 151. The second mixing cavity 152 is positioned corresponding to the first mixing cavity 142, and the first mixing cavity 142 and the second mixing cavity 152 are connected through the through hole 170.

[0053] The gas flowing from the gas supply port 1223 enters the first mixing chamber 142. Part of it is supplied to the first annular slit chamber 141, and the other part is supplied to the second mixing chamber 152 through the perforation 170, and then from the second mixing chamber 152 to the second annular slit chamber 151. The gas first enters the larger mixing chamber and then the annular slit chamber, which allows it to be diffused and evenly distributed in the mixing chamber, resulting in a more uniform gas output and a more stable flame.

[0054] This embodiment also provides a stove, which includes the burner 100 as described above.

[0055] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship of the device or component during normal use. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation at any time, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model in this respect.

[0056] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this 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 this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A burner, characterized by It comprises: an outer ring fire cover; the outer ring fire cover comprises in sequence: an upper ring, a middle ring and a lower ring; a first ring gap is formed between the upper ring and the middle ring, a second ring gap is formed between the middle ring and the lower ring, and a groove extending along the radial direction of the outer ring fire cover is arranged on the surface of the upper ring opposite to the middle ring.

2. The burner of claim 1, wherein The groove extends from the outer peripheral edge of the upper ring to the bottom of the first ring gap.

3. The burner of claim 1, wherein The cross section of the groove is semicircular, and / or the groove is a straight line structure.

4. The burner of claim 1, wherein The upper ring is provided with a plurality of groups of grooves, each group of grooves comprising a plurality of grooves arranged along the circumferential direction of the outer ring fire cover, and the plurality of groups of grooves are arranged at intervals along the circumferential direction of the outer ring fire cover.

5. The burner of claim 1, wherein The first ring gap and the second ring gap both extend towards the center and below of the outer ring fire cover in the radial direction of the outer ring fire cover.

6. The burner of claim 1, wherein The lower end of the middle ring is provided with a plurality of perforations arranged along the circumferential direction of the outer ring fire cover, and the perforations communicate with the first ring gap and the second ring gap.

7. The burner of claim 6, wherein The bottom of the second ring gap is closed, the bottom of the first ring gap is provided with a gas supply port, and the gas supply port communicates with the mixing chamber of the burner.

8. The burner of claim 7, wherein The burner further comprises a base arranged below the outer ring fire cover, and the base is provided with a mixing chamber.

9. The burner of claim 7, wherein The upper part of the first ring gap forms a ring gap cavity, and the lower part of the first ring gap forms a mixing cavity, the radial dimension of the mixing cavity is greater than that of the ring gap cavity, the perforations are arranged corresponding to the position of the mixing cavity, and the gas supply port is connected to the mixing cavity.

10. A hob, characterized in that It comprises the burner according to any one of claims 1-9.

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