JP5384854B2 - Stove burner - Google Patents

Description

  The present invention relates to a gas burner for a stove.

Conventionally, in a Bunsen combustion type burner, the burner top is detachably mounted on the burner base of the burner body, and is drilled at substantially equal intervals in the circumferential direction on the peripheral wall of the burner top. A number of flame openings are formed by the vertical slits and openings. A gas nozzle is provided at the base end of the mixing pipe of the burner body. Fuel gas is supplied from the gas nozzle, and combustion primary air is sucked from the base end of the mixing pipe, and fuel gas and combustion primary air are mixed in the mixing pipe. Is supposed to be mixed. When the combustion gas mixed with the combustion primary air is ejected from the flame opening and ignited, an annular flame is formed so as to be discharged out of the flame opening, and further the combustion secondary air is outside the flame. It is supplied from and combustion is performed.
JP-A-11-63502

  For example, Patent Document 1 discloses a business-use stove device using the above-described stove burner. In this case, when a heating container such as a pan is placed on the virtues of the stove burner and cooking is performed, the annular flame hits the outer periphery of the heating container, and the outer periphery of the heating container is concentrated. And the bottom of the heating container was not heated uniformly. In view of this, it has been considered that a flame opening is also provided in the upper lid portion of the burner top so that not only the outer peripheral portion of the heating vessel but also the portion inside the outer peripheral portion is exposed to flame and the bottom of the heating vessel is heated as uniformly as possible.

  However, in this case, it is necessary to supply the secondary air for combustion to the flame formed in the flame top of the upper lid portion of the burner top, but the flame mouth is formed on the entire circumference of the peripheral wall portion of the burner top. Since an annular flame is formed, there is a problem that the secondary air for combustion cannot be supplied to the flame formed in the flame opening of the upper lid portion of the burner top because it is blocked by the annular flame. .

  The present invention has been made in view of the above points, and the object of the present invention is not to be blocked by the flame formed in the flame mouth of the peripheral wall portion of the burner top, but to the flame mouth of the upper lid portion of the burner top. An object of the present invention is to provide a stove burner capable of supplying secondary air for combustion to a formed flame.

The stove burner A of the present invention for solving the above problems is a burner top mainly composed of a cylindrical peripheral wall portion 21 on the burner base 1 and an upper lid portion 22 that closes the upper opening of the peripheral wall portion 21. 2, a main flame port 3 consisting of vertical slits having openings or lower ends reaching the lower surface is arranged in the circumferential direction on the peripheral wall portion 21 of the burner top 2, and the fuel gas is disposed between the burner base 1 and the burner top 2. An internal space 5 that communicates with the mixing pipe 4 that mixes the primary air for combustion is provided, the internal space 5 and the main flame opening 3 communicate with each other , and the burner base 1 includes an inner cylinder portion 11 and an outer cylinder portion 12. The upper part in the inner cylinder part 11 becomes the fitting concave part 14, and a columnar fitting convex part 24 having an outer diameter substantially the same as the inner diameter of the fitting concave part 14 is provided in the center of the upper bottom of the burner top 2. In the takoro burner A, the inner lid 22 The auxiliary flame port 6 communicated with the space 5 is provided, and the main flame port 3 is not formed on a part of the entire circumference of the peripheral wall portion 21 of the burner top 2, and the secondary combustion air flows from the outside to the burner top 2. The secondary air insertion part 7 which can be penetrated toward the center part of the upper cover part 22 is provided , and the outer auxiliary flame opening 61 located outside as viewed from the center of the upper cover part 22 of the burner top 2 and the inner side as the auxiliary flame opening 6 The internal auxiliary flame ports 62 positioned in the zigzag are provided in a staggered pattern alternately in the circumferential direction .

With such a configuration, the flame formed in the auxiliary flame port 6 on the upper surface of the burner top 2 is used for combustion without being blocked by the flame formed in the main flame port 3 of the peripheral wall portion 21 of the burner top 2. Secondary air can be supplied, and the bottom of the heating container can be heated evenly. In addition, the burner top 2 can be stably placed on the burner base 1, and the bottom of the heating container can be heated more uniformly.

  In the present invention, secondary air for combustion can be supplied to the flame formed in the auxiliary flame port on the upper surface of the burner top without being blocked by the flame formed in the main flame port of the peripheral wall portion of the burner top. The bottom of the heating container can be heated without unevenness.

  Hereinafter, an embodiment of the present invention will be described.

  The stove burner A of the present embodiment is a Bunsen combustion type burner, and as shown in FIGS. 1 and 2, a main body is formed by the burner body A1 and the burner top 2.

  As shown in FIGS. 3 and 4, the burner body A <b> 1 is formed by integrally providing a burner base 1 having a ring shape in plan view and a mixing tube 4. The burner base 1 is mainly composed of an inner cylinder part 11 and an outer cylinder part 12 positioned outside the inner cylinder part 11, and the inner cylinder part 11 and the outer cylinder part 12 are connected by a lower end part, An annular recess 13 that opens upward is formed between the inner cylinder portion 11 and the outer cylinder portion 12, and the recess 13 and the mixing passage 41 of the mixing tube 4 communicate with each other. The upper part in the inner cylindrical part 11 of the burner base 1 is a fitting concave part 14 for positioning the burner top 2, and is lower than the fitting concave part 14 in the inner cylindrical part 11 of the burner base 1. A hole cap 15 is attached to the portion. The upper end portion of the inner surface of the outer cylindrical portion 12 of the burner base 1 is provided with an inclined surface 16 that extends outward as the annular recess 13 goes upward. A rising surface 17 rising slightly vertically at the upper end is formed over the entire circumference. Further, the burner base 1 is formed with a notch 19 in a part in the circumferential direction, and a flame detecting thermocouple is disposed in the notch 19.

  As shown in FIGS. 5 and 6, the burner top 2 is mainly composed of a cylindrical peripheral wall portion 21 and an upper lid portion 22 that closes the upper opening of the peripheral wall portion 21, and has a bottomed bottom that opens downward It is formed in a cylindrical shape and can be detachably mounted on the burner base 1 as shown in FIGS. The peripheral wall portion 21 of the burner top 2 is provided with a main flame opening 3 by drilling longitudinal slits penetrating in the inner and outer directions of the peripheral wall portion 21 in the circumferential direction. The vertical slit is formed from the lower end of the peripheral wall portion 21 and opens downward and inward and outward. When the burner top 2 is placed on the burner base 1, the main flame outlet 3 is configured to store fuel gas and combustion primary air formed between the inner cylinder portion 11 of the burner base 1 and the peripheral wall portion 21 of the burner top 2. It communicates with the annular inner space 5 to which the mixed gas is supplied.

  Although this main flame mouth 3 is formed at substantially equal intervals over the substantially entire circumference of the outer peripheral surface 21a of the peripheral wall portion 21 of the burner top 2, a portion where the main flame mouth 3 is not formed in a part of the entire circumference. This portion is a secondary air insertion portion 7 through which secondary air can be inserted from the outside of the burner burner A toward the center portion of the upper lid portion 22 of the burner top 2. In the present embodiment, the entire circumference of the outer peripheral surface 21a of the peripheral wall portion 21 of the burner top 2 is divided into four portions every 90 °, and the secondary air insertion portion 7 is provided at the boundary portion of each block. The mouths 3 are provided at equal intervals. More specifically, 48 main flame ports 3 are formed at equal intervals over the entire circumference of the outer peripheral surface 21a of the peripheral wall portion 21 of the burner top 2, and the four main flame ports 3 are formed at every 90 °. The secondary air insertion portion 7 is configured by being closed by a closing member 27 made of or the like, and each block has eight main flame ports 3. The closing member 27 can be attached to any main flame opening 3 and the closing member 27 attached to the main flame opening 3 can be removed. However, the closing member 27 may not be particularly removable. It should be noted that, of course, an opening or a vertical slit that becomes the main flame opening 3 may not be formed in advance in a portion where the secondary air insertion portion 7 is provided.

  As described above, it is preferable to provide the secondary air insertion portion 7 having a width of about 30 ° every 90 ° in the circumferential direction. However, in order to allow the secondary air to be inserted, the width of the secondary air insertion portion 7 is about 15 °. In addition, in order to secure the heating power of the main flame outlet 3, the width of the secondary air insertion portion 7 should be smaller than about 45 °.

  Further, the upper lid portion 22 of the burner top 2 is provided with an auxiliary flame opening 6 that penetrates vertically and communicates with the internal space 5. In the present embodiment, the external auxiliary flame port 61 located on the outer side as viewed from the center of the upper lid portion 22 of the burner top 2, and the inner auxiliary flame port 62 located on the inner side as viewed from the center of the upper lid portion 22 of the burner top 2, Are provided in a staggered pattern alternately in the circumferential direction to form a substantially annular auxiliary flame mouth 6. More specifically, a total of eight external auxiliary flame ports 61 are provided on a circle having a diameter of 36 mm in a plan view at every 45 °, and the internal auxiliary flame ports 62 are 31.5 mm in a plan view inside the external auxiliary flame port 61. A total of eight are provided in the middle position of the adjacent external auxiliary flame ports 61 on the concentric circles.

  The outer auxiliary flame opening 61 is formed by drilling a circular hole having a hole diameter of 3 mm in the upper lid portion 22 of the burner top 2 in the vertical direction. On the other hand, the inner auxiliary flame port 62 is formed with a circular hole having the same hole diameter of φ3 mm as the outer auxiliary flame port 61 in a direction inclined 20 ° obliquely upward from the vertical direction to the upper lid portion 22 of the burner top 2. Is formed. The angle is preferably in the range of 10 ° to 30 °, and most preferably 20 °. The mixed gas of the fuel gas and the primary air for combustion is ejected upward from the outer auxiliary flame port 61, and is tilted from the inner auxiliary flame port 62 by approximately 20 ° from the vertically upward direction to the center side of the burner top 2. To erupt. It is not necessary to incline the inner auxiliary flame port 62 as long as it is provided on the inner side of the above position. However, the inner auxiliary flame port 62 needs to communicate with the annular inner space 5. Since the position cannot be taken inward of the position of the internal space 5 in plan view, the internal auxiliary flame port 62 is tilted to form the flame of the internal auxiliary flame port 62 inside the flame of the external auxiliary flame port 61. Is.

  The upper surface of the vertical slit serving as the main flame outlet 3 is inclined so as to go upward as it goes from the inner periphery to the outer periphery, and the vertical slit is inclined so as to face obliquely upward from the inner side to the outer side. An inclined surface 23 having the same inclination as the inclined surface 16 of the burner base 1 described above is provided on the outer periphery of the lower portion of the burner top 2, and the inclined surface of the burner base 1 with the burner top 2 placed on the burner base 1. 16 shows an inclined surface 23 of the burner top 2.

  The outer peripheral surface 21 a of the peripheral wall portion 21 of the burner top 2 is a vertical surface, and the lower end of the outer peripheral surface 21 a is along the rising surface 17 of the burner base 1. Thus, when the lower end of the outer peripheral surface 21a is along the rising surface 17, when the burner top 2 is mounted, the burner top 2 is stably positioned at a predetermined position. Further, a cylindrical fitting convex portion 24 having an outer diameter substantially the same as the inner diameter of the fitting concave portion 14 protrudes downward from the center of the upper base in the burner top 2, and the fitting convex portion 24 is fitted into the fitting concave portion. 14 is fitted. Thus, the burner top 2 is stably positioned at a predetermined position by fitting the fitting convex portion 24 into the fitting concave portion 14. Further, an annular placement surface portion 25 is provided around the fitting convex portion 24, and the burner top 2 is further stabilized by placing this placement surface portion 25 on the upper end of the inner cylinder portion 11 of the burner base 1. It can be placed well.

  Further, the burner top 2 is provided with a positioning portion 28 protruding downward from a part of the circumferential direction of the portion placed on the upper end of the inner cylinder portion 11 of the burner base 1, and the inner cylinder of the burner base 1. A positioning recess 18 that fits with the positioning portion 28 is provided in a part of the upper end of the portion 11 in the circumferential direction, and the positioning of the burner top 2 placed on the burner base 1 in the circumferential direction is performed. Thereby, the main flame opening 3 can be located in the position corresponding to the thermocouple for flame detection arrange | positioned at the notch 19 of the burner base 1, and a flame can be detected reliably.

  When the burner top 2 is placed on the burner base 1 as described above, the mixing passage 41 of the mixing pipe 4 communicates with the inner cylinder portion 11 of the burner base 1 and the peripheral wall portion 21 of the burner top 2. An annular internal space 5 is formed, and a number of main flame ports 3 are formed in the circumferential direction between the burner top 2 and the burner base 1 by vertical slits provided in the burner top 2. At the upper end of the outer peripheral surface 21a of the burner top 2, a flange portion 26 that protrudes outward is provided so as to protrude over the entire circumference. In addition, you may comprise a flame opening by providing the opening penetrated inside and outside in the surrounding wall part 21 of the burner top 2 instead of a vertical slit.

  The stove burner A configured as described above is small. In this embodiment, for example, the length of the mixing tube 4 is 66 mm, the maximum diameter of the burner base 1 is φ70 mm, and the maximum diameter of the burner top 2 is φ56 mm. It is.

  The stove burner A injects fuel gas from a gas nozzle (not shown) disposed at the base end of the mixing tube 4 so that the fuel gas is supplied to the mixing passage 41 of the mixing tube 4 and is mixed by the venturi effect. The primary combustion air is sucked into the mixing passage 41 from the base end of the gas, and the fuel gas and the primary combustion air are mixed in the mixing passage 41 and ejected from the multiple main flame ports 3 through the internal space 5. . When the gas ejected from the main flame port 3 is ignited, combustion is performed while obtaining secondary air for combustion from the outside, and a flame is formed in each main flame port 3.

  The mixed gas of the fuel gas and the primary air for combustion sucked into the internal space 5 from the mixing pipe 4 is also ejected from the auxiliary flame opening 6 of the upper lid portion 22 of the burner top 2 to form a flame. The supplied secondary air for combustion passes through the secondary air insertion part 7 from the outside of the stove burner A and flows into the annular flame of the main flame outlet 3, and the upper cover part 22 of the burner top 2 It reaches the auxiliary flame outlet 6. Thereby, not only the flame formed in an annular shape on the outer periphery of the peripheral wall portion 21 of the burner top 2 but also a flame by the auxiliary flame opening 6 can be formed inside the flame, and the bottom of the heating container is made uneven. It becomes possible to heat without.

  Further, the auxiliary flame outlet 6 is composed of the external auxiliary flame mouth 61 and the internal auxiliary flame mouth 62 as described above, so that the flame formed in the inner auxiliary flame mouth 62 is the flame formed in the outer auxiliary flame mouth 61. It is possible to change the position of the flame corresponding to the bottom of the heating container, so that the bottom of the heating container can be heated more evenly. The inner auxiliary flame ports 62 are provided on the inner side of the outer auxiliary flame port 61, but are provided alternately in the circumferential direction so that the circumferential positions of the outer auxiliary flame port 61 and the inner auxiliary flame port 62 do not overlap. Therefore, there is no problem that the combustion secondary air is blocked by the flame formed in the outer auxiliary flame port 61 and is not supplied to the inner auxiliary flame port 62.

  In the present embodiment, the external auxiliary flame ports 61 and the internal auxiliary flame ports 62 are alternately provided as described above, but the external auxiliary flame ports 61 and the internal auxiliary flame ports 62 in the upper lid portion 22 of the burner top 2 are provided. If the positions in the circumferential direction are different, there is no hindrance to the supply of the secondary air for combustion to the inner auxiliary flame port 62. Therefore, the positions may not be alternated and may be provided at other ratios. Furthermore, the outer auxiliary flame port 61 and the inner auxiliary flame port 62 may be provided concentrically.

  As shown in FIG. 7, a plurality of the stove burners A configured as described above are incorporated in a commercial stove apparatus 8 side by side. A flat rectangular parallelepiped casing 81 that is long in the front, rear, left, and right sides of the stove device 8 is provided with a plurality of stove storage portions in the front, rear, left, and right, and a stove burner A is installed in each of the stove storage portions. ing. A top plate 82 is detachably attached to the opening on the top surface of each stove storage portion, and the burner top 2 is exposed from the opening of the top plate 82. On the top plate 82, the virtues 83 are detachably placed, and a pan or the like can be placed on the virtues 83. A plurality of operation knobs 84 are mounted side by side on the front surface of the casing 81, and by operating the operation knobs 84, operations such as ignition, fire extinguishing, and thermal power adjustment of each burner A can be performed. It has become.

  The stove device 8 configured as described above is used for business in restaurants and the like, and is used by one cook to arrange a plurality of pans and the like and cook at the same time. In the present embodiment, when a rice cake pot having a diameter of about 13 to 20 cm is placed on Gotoku 83 and, for example, cutlet, chicken, or the like is bound with an egg, When the outer peripheral part is heated intensively and the egg is hardened only in the outer peripheral part while the inside is raw, the outer peripheral part and the inner part can be uniformly heated to finish the egg binding evenly. Thus, it is suitably used as a cooker burner A for a casserole pot that cooks a cutlet, chicken or the like with eggs, and a casserole pot for cooking other person's potatoes in a casserole pot. Of course, it may be used for cooking, for example, stone-baked pibimbap and other foods.

  In addition, the dimension, diameter, angle, etc. in the above description are examples, and are not limited to these.

It is the perspective view seen from diagonally upward of the stove burner of this invention. The stove burner same as the above is shown, (a) is a plan view, and (b) is a side sectional view. The burner main body same as the above is shown, (a) is a plan view, and (b) is a side sectional view. It is the perspective view seen from diagonally upward of the burner main body same as the above. The burner top same as the above is shown, (a) is a plan view, (b) is a cross-sectional view, and (c) is a bottom view. It is the perspective view seen from diagonally downward of the burner top same as the above. The stove apparatus incorporating the above-described stove burner is shown, (a) is a plan view, and (b) is a side view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Burner base 2 Burner top 21 Perimeter wall part 22 Upper cover part 3 Main flame opening 4 Mixing pipe 5 Internal space 6 Auxiliary flame opening 7 Secondary air insertion part

Claims (1)

A vertical slit that has a cylindrical peripheral wall part on the burner base and an upper lid part that closes the upper opening of the peripheral wall part, and the opening or lower end of the burner top reaches the lower surface. Are arranged in a circumferential direction, and an internal space communicating with a mixing pipe for mixing fuel gas and primary combustion air is provided between the burner base and the burner top. The burner base is provided with an inner cylinder part and an outer cylinder part, the upper part in the inner cylinder part becomes a fitting recess, and the outer diameter of the upper part of the burner top is substantially the same as the inner diameter of the fitting recess. In the stove burner provided with a cylindrical fitting convex portion, an auxiliary flame opening communicating with the internal space is provided in the upper lid portion of the burner top, and a part of the entire circumference of the peripheral wall portion of the burner top , No secondary flame is formed Provided the secondary air insertion part which can be inserted toward the center portion of the upper cover portion of Natoppu, as auxiliary flame hole, among which is located outside the auxiliary flame hole and inner located outside when viewed from the center of the upper cover portion of the burner top A stove burner characterized in that auxiliary flame outlets are provided in a staggered pattern alternately in the circumferential direction .

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