Burners and ovens

Abstract

The present invention discloses a burner and an oven with the burner, wherein the burner is used in the oven and comprises: a main combustion tube, with a row of combustion holes and a row of fire stabilizing holes arranged axially on both sides, the combustion holes comprising a plurality of square fire holes and a plurality of circular fire holes arranged in a staggered manner; a radiation plate connected to the upper side of the main combustion tube; a flame stabilizing plate connected to the lower side of the main combustion tube; wherein the radiation plate is located above the combustion hole, a fire stabilizing plate is arranged on both sides of the flame stabilizing plate, a gap is formed between the fire stabilizing plate and the main combustion tube, and the fire stabilizing holes are arranged in the gap. A row of combustion holes and a row of fire stabilizing holes are arranged on both sides of the main combustion tube, and the flames ejected from the fire stabilizing holes are transferred to the combustion holes through the fire stabilizing plates, so as to ensure the flame stability of the combustion holes and prevent the flame from being extinguished; the combustion holes are composed of a plurality of square fire holes and a plurality of circular fire holes arranged in a staggered manner, which improves the stability of combustion and is conducive to increasing the heat load.

Description

Technical Field

[0001] The invention relates to the technical field of ovens, in particular to a burner used in an oven and an oven. Background Art

[0002] In the related technology, the burners used in existing gas ovens have the following defects: 1. Most tubular burners use circular fire holes, and their designed heat load is not high. Under higher heat load conditions, abnormal conditions such as flame separation and yellow flame will occur, and they cannot be used normally; 2. Tubular burners generally have only one row of combustion holes, and the flame stability is low, which is prone to flame separation or even flame extinction. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a burner to improve heat load and combustion stability.

[0004] The present invention also provides an oven with the burner.

[0005] A burner according to a first aspect of the present invention is used in an oven and includes:

[0006] The main combustion tube has a row of combustion holes and a row of fire stabilizing holes located below the combustion holes along the axial direction on both sides, and the combustion holes include a plurality of square fire holes and a plurality of circular fire holes arranged in a staggered manner;

[0007] A radiation plate connected to the upper side of the main combustion tube;

[0008] A flame stabilizing plate connected to the lower side of the main combustion tube;

[0009] Wherein, the radiation plate is located above the combustion hole, a fire stabilizing plate is provided on each side of the flame stabilizing plate, a gap is formed between the fire stabilizing plate and the main combustion tube, and the fire stabilizing hole is arranged in the gap.

[0010] The burner according to the embodiment of the first aspect of the present invention has at least the following beneficial effects: a row of combustion holes and a row of fire stabilizing holes are arranged on each side of the main combustion tube, and the fire stabilizing holes are located in the gap between the fire stabilizing plate and the main combustion tube. The flames ejected from the fire stabilizing holes are transferred to the combustion holes through the fire stabilizing plates, thereby ensuring the flame stability of the combustion holes and preventing the flame from being extinguished; the combustion holes are composed of a plurality of square fire holes and a plurality of circular fire holes arranged in an alternating manner, thereby improving the stability of the combustion and facilitating increasing the heat load.

[0011] According to some embodiments of the first aspect of the present invention, the plurality of square fire holes and the plurality of circular fire holes are arranged in an equidistant and staggered manner.

[0012] According to some embodiments of the first aspect of the present invention, a distance between two adjacent fire stabilization holes is greater than a distance between two adjacent combustion holes.

[0013] According to some embodiments of the first aspect of the present invention, the square fire hole is rectangular, and the short side of the square fire hole is parallel to the axial direction of the main combustion tube.

[0014] According to some embodiments of the first aspect of the present invention, the combustion holes on both sides of the main combustion tube are arranged symmetrically.

[0015] According to some embodiments of the first aspect of the present invention, the main combustion tube is connected to an ignition bracket, an ignition needle and a thermocouple are connected to the ignition bracket, the ignition needle and the thermocouple are arranged relatively on both sides of the main combustion tube, and the main combustion tube is provided with a plurality of fire transfer holes corresponding to the ignition needle.

[0016] According to some embodiments of the first aspect of the present invention, an air inlet slot is provided at the end of the main combustion tube, a rotatable air regulating cap is connected to the end of the main combustion tube, and the air regulating cap is provided with a shielding piece matching the air inlet slot.

[0017] The oven according to the second embodiment of the present invention has a burner as described above, which has at least the following beneficial effects: a row of combustion holes and a row of flame stabilization holes are arranged on each side of the burner, which improves the stability of the flame and reduces the risk of flame extinguishing; the combustion holes are composed of a plurality of square fire holes and a plurality of circular fire holes arranged in a staggered manner, which improves the stability of combustion, is conducive to increasing the heat load, and the oven heats up faster, which can reduce the cooking time and meet people's different needs.

[0018] According to some embodiments of the second aspect of the present invention, a gas nozzle is further included, the nozzle of the gas nozzle extends into the main combustion pipe, the main combustion pipe is fixedly connected to a fixed bracket, and the fixed bracket is fixedly connected to the gas nozzle.

[0019] According to some embodiments of the second aspect of the present invention, at least two screw mounting holes are provided on the fixed bracket, and the gas nozzle is provided with screws, and the screws are installed in cooperation with the screw mounting holes to fix the main combustion pipe, thereby ensuring that the main combustion pipe is arranged concentrically with the nozzle, thereby improving the uniformity of gas distribution and improving the uniformity of oven heating.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 It is a schematic diagram of the structure of some embodiments of the first aspect of the present invention;

[0023] Figure 2 , Figure 3 It is a schematic diagram of some embodiments of the first aspect of the present invention;

[0024] Figure 4 are cross-sectional views of some embodiments of the first aspect of the present invention;

[0025] Figure 5 It is a schematic diagram of the structure of the main combustion tube in some embodiments of the first aspect of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of some embodiments of the second aspect of the present invention;

[0027] Figure 7 It is a schematic structural diagram of a burner connected to a gas nozzle in some embodiments of the second aspect of the present invention.

[0028] The figures are as follows:

[0029] Main combustion tube 100, air inlet end 101, venturi tube 102, round tube 103, ignition bracket 104, screw 105, mounting plate 106, combustion hole 110, square fire hole 111, round fire hole 112, fire stabilization hole 120, ignition needle 130, thermocouple 140, fire transfer hole 150, air inlet slot 160, fixing bracket 170, screw mounting hole 171;

[0030] Radiant panel 200;

[0031] Flame stabilizing plate 300, flame stabilizing sheet 310;

[0032] The air regulating cap 400, the shielding piece 410, and the slot 420;

[0033] Oven 500, gas nozzle 510, nozzle 511, bolt 512;

[0034] Burner 600. DETAILED DESCRIPTION

[0035] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0037] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0038] The burners used in existing gas ovens have the following defects: 1. Most tubular burners use circular fire holes, and their designed heat load is not high. Higher heat loads require the circular fire holes to have larger apertures. Under higher heat load conditions, abnormal conditions such as flame separation and yellow flames may occur, affecting the heating effect; 2. Tubular burners generally have only one row of combustion holes, and the flame stability is low, which is prone to flame separation or even flame extinction.

[0039] For this purpose, refer to Figures 1 to 3 , a burner 600 according to an embodiment of the first aspect of the present invention is used in an oven 500, comprising: a main combustion tube 100, comprising an air inlet end 101, a venturi tube 102 and a circular tube 103, a row of combustion holes 110 and a row of fire stabilizing holes 120 located below the combustion holes 110 are axially arranged on both sides of the circular tube 103, the combustion holes 110 include a plurality of square fire holes 111 and a plurality of circular fire holes 112 arranged in an alternating manner; a radiation plate 200, connected to the upper side of the main combustion tube 100; a flame stabilizing plate 300, connected to the lower side of the main combustion tube 100; wherein the radiation plate 200 is located above the combustion hole 110, a fire stabilizing plate 310 is arranged on both sides of the flame stabilizing plate 300, a gap is formed between the fire stabilizing plate 310 and the main combustion tube 100, and the fire stabilizing holes 120 are arranged in the gap.

[0040] During heating, a row of combustion holes 110 and a row of fire stabilizing holes 120 on both sides of the main combustion tube 100 simultaneously spray flames. Since the fire stabilizing holes 120 are located in the gap between the fire stabilizing plate 310 and the main combustion tube 100, the combustion holes 110 are above the fire stabilizing holes 120. The flames sprayed from the fire stabilizing holes 120 are transmitted to the combustion holes 110 through the fire stabilizing plate 310, ensuring the flame stability of the combustion holes 110 and preventing it from being extinguished. In addition, the double flames are superimposed to increase the heating speed. The combustion holes 110 are composed of a plurality of staggered square fire holes 111 and a plurality of circular fire holes 112, which improves the stability of combustion and is conducive to increasing the heat load. Here, it can be understood that the staggered arrangement of a plurality of square fire holes 111 and a plurality of circular fire holes 112 includes but is not limited to a circular arrangement of one square fire hole 111 plus one circular fire hole 112, a circular arrangement of two square fire holes 111 plus two circular fire holes 112, and a circular arrangement of one square fire hole 111 plus two circular fire holes 112. For circular holes, as the heat load increases, the corresponding unit strength (or area) of the fire hole needs to be increased. If the radius of the circular hole increases, it is easy to cause flashback (that is, the flame shrinks inside the combustion tube), which can easily lead to abnormal conditions such as flame separation and yellow flame. Therefore, a plurality of square fire holes 111 and a plurality of circular fire holes 112 are arranged in a staggered manner. The edge of the square fire hole 111 is closer to the center, so the flame is easy to attach to, and the flame stability is better. The area of ​​the square fire hole 111 can be increased to increase the heat load.

[0041] It is understood that the radiation plate 200 is fixed on the top of the main combustion tube 100 by welding or screws, and the radiation plate 200 covers the flame and then transfers the heat to the inside of the oven 500, so that the heating uniformity is good. Figure 2 and Figure 3 The cross-section of the flame stabilizing plate 300 is semicircular, matching the shape of the circular tube 103. The flame stabilizing plate 300 is fixed to the lower side of the circular tube 103 by welding. A space is reserved between the flame stabilizing plate 300 and the circular tube 103 to form a gap. The flame ejected from the fire stabilizing hole 120 is restricted by the fire stabilizing sheet 310 and faces upward, which can be used to ignite the flame of the combustion hole 110, while making the flame of the combustion hole 110 not easy to extinguish.

[0042] Reference Figure 5 According to some embodiments of the first aspect of the present invention, a plurality of square fire holes 111 and a plurality of circular fire holes 112 are arranged equidistantly and staggered to ensure that the flames of each combustion hole 110 have sufficient space and do not affect each other and are evenly arranged, which is beneficial to improving the uniformity of heating in the oven 500.

[0043] Reference Figure 5According to some embodiments of the first aspect of the present invention, the distance between two adjacent fire stabilizing holes 120 is greater than the distance between two adjacent combustion holes 110. Since the flames ejected from the fire stabilizing holes 120 are refracted by the fire stabilizing plates 310, the area of ​​the flame is expanded, and the fire stabilizing holes 120 provide auxiliary heat. Therefore, the number of the fire stabilizing holes 120 is small, and the distance between them is increased.

[0044] Reference Figure 5 According to some embodiments of the first aspect of the present invention, the square fire hole 111 is a rectangle, and the short side of the rectangle is parallel to the axial direction of the main combustion tube. Considering that the radiation plate 200 is located above the square fire hole 111, and the flame is naturally upward, the short side of the square fire hole 111 with a rectangular cross section is arranged above and close to the radiation plate 200, and the upper short side and the upper part of the long sides on both sides are conducive to the flame attachment, thereby improving the stability of combustion.

[0045] Reference Figure 4 According to some embodiments of the first aspect of the present invention, the combustion holes 110 on both sides of the main combustion tube 100 are symmetrically arranged, that is, the two combustion holes 110 on the same cross section of the main combustion tube 100 are symmetrically arranged, ensuring that the flames on both sides of the main combustion tube 100 are basically consistent, which helps to improve the uniformity of heating of the oven 500.

[0046] According to some embodiments of the first aspect of the present invention, the main combustion tube 100 is connected to an ignition bracket 104, and an ignition needle 130 and a thermocouple 140 are connected to the ignition bracket 104. The ignition needle 130 and the thermocouple 140 are arranged on both sides of the main combustion tube 100. The main combustion tube 100 is provided with a plurality of flame transfer holes 150 corresponding to the ignition needle 130. The plurality of flame transfer holes 150 are arranged along the circumference of the main combustion tube 100 and close to the combustion hole 110. When the burner is ignited, the ignition needle 130 cooperates with the ignition to ignite the gas ejected from the flame transfer hole 150, and then the flames of the plurality of flame transfer holes 150 ignite the gas ejected from the fire stabilization hole 120 and the combustion hole 110. The plurality of flame transfer holes 150 ensure smooth ignition.

[0047] According to some embodiments of the first aspect of the present invention, an air inlet slot 160 is provided at the end of the main combustion tube 100, and a rotatable air regulating cap 400 is connected to the end of the main combustion tube 100. The air regulating cap 400 is sleeve-shaped and is mounted on the end of the main combustion tube 100. The air regulating cap 400 is provided with a shielding piece 410 matching the air inlet slot 160. By rotating the air regulating cap 400 to change the area of ​​the shielding piece 410 shielding the air inlet slot 160, the opening of the air inlet slot 160 can be adjusted to adjust the air intake volume, thereby adjusting the flame of the burner 600. It can be understood that in order to limit the rotation range of the air regulating cap 400, a screw 105 is fixed on the main combustion tube 100, and the air regulating cap 400 is provided with a slot 420, and the screw 105 is stuck in the slot 420, thereby limiting the rotation range of the air regulating cap 400, avoiding misoperation, and being convenient to use, and protecting the air regulating cap 400, and increasing the service life of the air regulating cap 400.

[0048] Reference Figure 7 The oven 500 according to the second embodiment of the present invention has the burner 600 as described above. Since the burner 600 has a row of combustion holes 110 and a row of flame stabilizing holes 120, the stability of the flame is improved and the risk of flame extinguishing is reduced; the combustion holes 110 are composed of a plurality of square fire holes 111 and a plurality of circular fire holes 112 arranged in a staggered manner, which improves the stability of combustion and is conducive to increasing the heat load. The oven 500 heats up faster, which can reduce the cooking time and meet people's different needs.

[0049] Reference Figure 6 According to some embodiments of the second aspect of the present invention, the oven 500 has a gas nozzle 510, a nozzle 511 of the gas nozzle 510 passes through the air regulating cap 400 and extends into the main combustion tube 100, so as to supply gas to the burner 600, and a fixing bracket 170 is fixedly connected to the main combustion tube 100, and the fixing bracket 170 is fixedly connected to the gas nozzle 510. The main combustion tube 100 is fixed to the gas nozzle 510 by the fixing bracket 170, so as to ensure that the nozzle 511 and the main combustion tube 100 are arranged concentrically and fixed in relative position, so as to prevent the nozzle 511 from deviating from the center of the combustion tube 100 and causing unilateral yellow flame, uneven heating and the like, thereby improving the use stability of the oven 500.

[0050] Reference Figure 6According to some embodiments of the second aspect of the present invention, the fixing bracket 170 is welded and fixed on the main combustion tube 100, and at least two screw mounting holes 171 are provided on the fixing bracket 170, wherein two screw mounting holes 171 are a preferred solution, and two corresponding bolts 512 are provided on the gas nozzle 510, and the bolts 512 pass through the screw mounting holes 171 and are connected with nuts to fix the main combustion tube 100, ensure that the main combustion tube 100 is arranged concentrically with the nozzle 511, improve the uniformity of gas distribution, and improve the uniformity of heating of the oven 500, and use two screw mounting holes 171 and two bolts 512 to prevent the burner 600 from rotating, so as to ensure the accurate orientation of the radiation plate 200. It is understandable that the fixing bracket 170 and the gas nozzle 510 can also adopt other connection methods, such as tongue and socket, block and slot, etc., which can all achieve the purpose of fixed connection. A mounting plate 106 is provided at the other end of the combustion tube 100 away from the nozzle 511. The mounting plate 106 is fixed to the oven 500 by screws to ensure that the position of the burner 600 is fixed and reliable in use.

[0051] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A burner for an oven, characterized in that: include: A main combustion tube, with a row of combustion holes and a row of fire stabilizing holes located below the combustion holes arranged along the axial direction on both sides thereof, the combustion holes comprising a plurality of staggered square fire holes and a plurality of round fire holes, the plurality of the square fire holes and the plurality of the round fire holes being staggered and arranged at equal intervals, the square fire holes being rectangular, and the short sides of the square fire holes being parallel to the axial direction of the main combustion tube; A radiation plate connected to the upper side of the main combustion tube; A flame stabilizing plate connected to the lower side of the main combustion tube; Wherein, the radiation plate is located above the combustion hole, a fire stabilizing plate is provided on each side of the flame stabilizing plate, a gap is formed between the fire stabilizing plate and the main combustion tube, and the fire stabilizing hole is arranged in the gap.

2. The burner according to claim 1, characterized in that The distance between two adjacent fire stabilization holes is greater than the distance between two adjacent combustion holes.

3. The burner according to claim 1, characterized in that The combustion holes on both sides of the main combustion tube are arranged symmetrically.

4. The burner according to claim 1, characterized in that The main combustion tube is connected to an ignition bracket, and an ignition needle and a thermocouple are connected to the ignition bracket. The ignition needle and the thermocouple are arranged on both sides of the main combustion tube relatively. The main combustion tube is provided with a plurality of fire transfer holes corresponding to the ignition needle.

5. The burner according to claim 1, characterized in that An air inlet slot is arranged at the end of the main combustion tube, and a rotatable air regulating cap is connected to the end of the main combustion tube. The air regulating cap is provided with a shielding piece matching the air inlet slot.

6. An oven, characterized in that A burner as claimed in any one of claims 1 to 5.

7. The oven according to claim 6, characterized in that: It also includes a gas nozzle, the nozzle of the gas nozzle extends into the main combustion pipe, the main combustion pipe is fixedly connected with a fixed bracket, and the fixed bracket is fixedly connected to the gas nozzle.

8. The oven according to claim 7, characterized in that: The fixing bracket is provided with at least two screw mounting holes, the gas nozzle is provided with screws, and the screws are installed in cooperation with the screw mounting holes to fix the main combustion tube.

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