JP2004150694A - Burner and cooking unit using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a burner having flame retaining property and assuring combustion with less influences of boiled-over stock and a cooking unit using the same. <P>SOLUTION: The burner comprises a burner body 1, a burner port plate 7, and a boil-over guide 17. The burner port plate 7 is inclined at its inside face to form a combustion surface 12 and the boil-over guide 17 has an outer end 19 at which part of the combustion surface 12 of the burner port plate 7 is blocked and to which a inner periphery portion 16 of the burner port plate 7 is fixed, and the boil-over guide 17 and the burner port plate 7 are mounted in a mixture chamber 5 of the burner body 1 with air-tightness. So, the residence of combustion premixture is generated with the operation of the boil-over guide 17, the flame retaining property is improved, the entry of the boiled-over stock is suppressed by using the boil-over guide 17 for blocking the part of the combustion surface 12, and less influences are given to the combustion. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a burner including a burner body and a burner cap, and a stove using the burner. The burner has a good flame holding property, and the combustion is not easily affected by overflowing broth or the like.
[0002]
[Prior art]
Heretofore, there has been known a burner including a burner main body and a burner cap, in which the flame is directed toward the center of the burner so that the handle of the pot and the stove main body, which are the objects to be heated, are not heated (for example, Patent Document 1).
[0003]
[Patent Document 1]
JP-A-9-159119
[Problems to be solved by the invention]
However, in the conventional burner, only a burner cap is fitted to the burner main body, and a measure is taken to improve the flame holding property and to prevent combustion from being affected by overflowing broth or the like. In addition, the combustion is unstable and is affected by overflowing broth and the like.
[0005]
An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide a burner which has good flame holding properties and is hardly affected by combustion by overflowing broth and the like, and a stove using the same. It is.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a burner of the present invention and a stove using the same comprise a burner body, a burner plate and a burner cap comprising a boiling guide inside the burner plate. The inner side surface is inclined from the upper side to the lower side in the inner circumferential direction to form a combustion surface, and the boil-off guide body closes a part of the combustion surface of the flame port plate at an outer end thereof, and the inner peripheral portion of the flame port plate. Are fixed, and the outer peripheral portion of the boiling guide, the inner peripheral portion of the mixing chamber of the burner body, the outer peripheral side of the flame port plate, and the outer peripheral portion of the mixing chamber are attached in an airtight state.
[0007]
As a result, since the fuel premixed gas stays above the flame plate due to the action of the boiling guide, the flame holding property is improved, and stable combustion from a high combustion amount to a low combustion amount can be secured. Even if there is overflowing broth or the like, since a part of the combustion surface is closed by the boiling guide, entry into the combustion surface can be suppressed, and the influence on combustion can be reduced.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
The invention according to claim 1 includes a burner main body having an annular mixing chamber and a central secondary air passage, a flame port plate mounted on the mixing chamber of the burner main body, and a boil-off guide inside the burner body plate. A burner cap, wherein the burner face plate has a combustion surface formed by inclining an inner surface of the burner plate from an upper side to a lower side in an inner circumferential direction, and the boil-off guide has a burner face of a burner face plate at an outer end thereof. And the inner periphery of the flame plate is fixed, and the outer periphery of the boiler guide and the inner periphery of the mixing chamber of the burner body, the outer periphery of the flame plate and the outer periphery of the mixing chamber are fixed. By using burners in which the parts are mounted in an airtight state, the premixed fuel is retained above the flame plate by the action of the simmering guide, so that the flame holding property is improved and the high combustion is achieved. Stable combustion from volume to low combustion can be ensured, and even if there is overflowing broth etc., it will be boiled down. Entry into the combustion surface by closes the part of the combustion surface is suppressed, it is possible to reduce the influence of the combustion.
[0009]
According to a second aspect of the present invention, a fixing ring is provided on the outer peripheral portion of the boiling guide, and the end of the inner peripheral portion of the flame port plate is brought into contact with the fixing ring to connect the boiling guide with the flame port plate. By using the fixed burner according to the first aspect, for example, the boiling guide is made of a rigid body (forged product, extruded product, etc.), the flame port plate is made of sheet metal, and the two are combined to form a mechanical device. A burner with high strength can be formed. In addition, the boil-spill guide and the flame mouth plate are made of different materials, so the boil-spill guide uses a material with high corrosion resistance at low temperatures, and the burner plate uses a material with high corrosion resistance at high temperatures. The life of the burner against corrosion caused by boiling water can be remarkably improved.
[0010]
According to a third aspect of the present invention, there is provided the burner according to the first or second aspect, wherein the inner peripheral portion of the flame port plate is press-fitted into the outer peripheral portion of the boiling guide member to fix the boiling guide member and the flame port plate. This eliminates the need for a special member for fixing the boil-off guide and the flame port plate, and can provide an inexpensive burner.
[0011]
According to a fourth aspect of the present invention, a burner according to the second aspect is provided, wherein the burner is fixed with a play between an outer peripheral portion of the boiling guide body and an inner peripheral portion of the flame plate. Even if the axes of the outer peripheral part of the body, the inner peripheral part of the mixing chamber of the burner main body, and the outer peripheral side of the flame port plate and the outer peripheral part of the mixing chamber are slightly misaligned, they are misaligned with each other due to backlash and both airtight fits. The joints are fitted and attached to each other to prevent the mixture from leaking from the mixing chamber.
[0012]
The invention according to claim 5 is characterized in that a convex portion is provided on one of an outer peripheral portion of the boiling guide and an inner peripheral portion of the flame plate, and a concave portion is provided on the other, and the boiling guide is fitted by fitting the convex portion and the concave portion. The flame burner plate and the burner plate according to any one of claims 1 to 3 in which the burner plate is fixed, so that both the burner plate and the boil-off guide do not rotate due to external force. The positional relationship can be ensured, and proper combustion can be performed.
[0013]
According to a sixth aspect of the present invention, the stove provided with the burner according to any one of the first to fifth aspects has good flame holding properties, and stable combustion from a high combustion amount to a low combustion amount. It is possible to provide a stove that can secure the same and has little effect on combustion even if there is overflowing broth or the like.
[0014]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0015]
(Example 1)
FIGS. 1 and 2 show a burner according to a first embodiment of the present invention.
[0016]
In FIG. 1, reference numeral 1 denotes a burner main body, which integrally forms a mixing pipe portion 2 for fuel premixed gas and an annular mixing chamber 5 formed between an inner peripheral portion 3 and an outer peripheral portion 4. A central space surrounded by the inner peripheral portion 3 is a penetrating secondary air passage 6. Reference numeral 7 denotes a ring-shaped flame port plate having a substantially truncated conical cross section, and an opening 8 corresponding to the secondary air passage 6 is provided at the center. The combustion port 12 is formed by inclining the inner surface of the flame port plate 7 from the upper side to the lower side in the inner circumferential direction. The combustion surface 12 is formed by providing a flame port 11 in which long slit holes 9 and short slit holes 10 are radially dispersed on an inclined surface. This is because interference between the flames formed by the long slit holes 9 is suppressed by the flame formed by the short slit holes 10 to divide the flame, thereby realizing a short flame as a whole.
[0017]
Numeral 13 denotes an annular spillover prevention body having an upper end 15 facing the combustion surface 12 of the flaring plate 7 in an eaves shape and fixing the outer peripheral portion 22 of the flaring plate 7. Is becoming In this state, the shape is such that the spillover prevention body 13 is placed on the upper end portion 14 of the flame plate 7. The inner diameter of the upper end portion 15 of the boil-over prevention body 13 is equal to or larger than the inner diameter of the inner peripheral portion 16 of the flaring plate 7 by about 1 to 2 mm. A part of the surface 12 is closed when viewed from above.
[0018]
Reference numeral 17 denotes an annular boil-off guide provided inside the burner plate 7, having a secondary air supply hole 18 in the center, and an outer end 19 at a part of the lower end of the combustion surface 12 of the burner plate 7, that is, The lower end of the long slit hole 9 is closed. The inner peripheral portion 16 of the flame plate 7 is fixed to the outer peripheral portion 20 of the boiling guide 17.
[0019]
The above-mentioned flame port plate 7, boil-over prevention body 13, and boil-off guide body 17 constitute a burner cap 20 placed on the mixing chamber 5 of the burner main body 1. Of the outer peripheral portion 21 of the mixing chamber 5, the inner peripheral portion 3 of the mixing chamber 5, the outer peripheral side of the flame opening plate 7, that is, the inner peripheral portion 23 of the boiling prevention member 13 and the outer peripheral portion 4 of the mixing chamber 5. Each is fitted and attached in an airtight state. Thus, the burner main body 1 and the burner cap 17 are integrated to form a burner.
[0020]
In the present embodiment, the burner cap 20 is composed of three parts, ie, the flame port plate 7, the spillover prevention body 13, and the spillover guide body 17, but the spillover prevention body 13 is omitted. In this case, the outer peripheral portion of the flame port plate 7 is extended downward to be airtightly attached to the outer peripheral portion 4 of the mixing chamber 5. Become.
[0021]
Next, the operation and operation will be described. The fuel premixed gas is sucked through the mixing pipe section 2, diffuses uniformly into the mixing chamber 5, and forms a flame at the flame port 11. At this time, the flame formed by the flame outlet 11 is generated obliquely upward along the inclined surface of the combustion surface 12, but the secondary air supplied from around the burner cap 20 and the burner body 1 and the burner cap By being sandwiched between the secondary air passage 6 formed by the 20 flame outlet plates 7 and the secondary air flowing in through the secondary air supply holes 18 as an ascending airflow, combustion is promoted near the combustion surface 12 and high temperature It becomes a flame, and at the same time, it is directed upward. Further, between the lower portion of the upper end portion 15 of the boil-over prevention member 13 and the upper portion of the flame port plate 7, the outward flow of the fuel premixed gas generated by colliding with the boil-over prevention member 13 and the combustion surface 12 are reduced. The upward flow of the fuel premixture that passes through collides, and the fuel premixture stagnates between the boiling prevention body 13 and the upper end of the flame port plate 7. Further, since the boiling guide 17 closes a part of the lower end of the combustion surface 12, that is, a part of the long slit hole 9, the fuel premixing also occurs due to the flow of the fuel premixed gas generated by colliding therewith. Qi retention occurs. For this reason, the flame holding property is improved, and a stable combustion flame is formed even in a gas which is liable to blow off.
[0022]
In addition, at a low combustion amount, an increase in the flame holding property can prevent a fire extinguishing phenomenon (a phenomenon in which the combustion flame blows off and disappears due to blowing out, etc.). Therefore, the flame can be concentrated directly above in a wide range from a high combustion amount to a low combustion amount, and heat dissipation can be prevented. Therefore, a burner for a cooker having efficient heat transfer and a wide range of variable heating power can be realized.
[0023]
(Example 2)
Next, a burner according to a second embodiment of the present invention will be described with reference to FIG. Since the basic configuration is the same as that of the first embodiment, only different points will be described.
[0024]
In this embodiment, a concave groove 24 is provided outside the outer peripheral portion 21 of the simmering guide 17, and has an outer diameter larger than the outer diameter of the groove 24 and an inner diameter A fixing ring 25 having a wire-like spring property and having an inner diameter smaller than the inner peripheral portion 16 of the wire is fitted. When the boiling guide 17 and the flame plate 7 are integrated with this fixing ring 25, the end 26 of the inner peripheral portion 16 of the flame plate 7 comes into contact with the boiling guide 17 and the flame plate 7. Is fixed.
[0025]
In the present embodiment, the groove 27 and the fixing ring 28 are also fixed between the inside of the outer peripheral portion 23 of the boil-over prevention member 13 and the outer peripheral portion 22 of the flame port plate 7 in the same manner as described above.
[0026]
Next, the operation and action will be described. The flame mouth plate 7 and the boil-off guide 17 are securely fixed by the fitting and the fixing ring 25 thereof, and the two are not separated. The same applies to the spill prevention body 13 and the flame plate 7. Then, for example, the spillover guide 17 (and the spillover prevention body 13) is made of a rigid body (forged product, extruded product, etc.), the flame port plate 7 is made of sheet metal, and the two are united to provide mechanical strength. High burner can be made. Further, since the spill guide 17 (and the spill preventive body 13) and the flame port plate 7 are formed of different materials, the spill and spill guide 17 (and the spill preventive body 13) have corrosion resistance at a low temperature. A high material and a material having high corrosion resistance at high temperatures can be used for the flame port plate 7, and the life of the burner against corrosion due to boiling water can be remarkably improved. Further, the same improvement in the combustion performance as in the first embodiment and the improvement in the spillover prevention performance are achieved.
[0027]
(Example 3)
Next, a burner according to a third embodiment of the present invention will be described with reference to FIG. Since the basic configuration is the same as that of the first embodiment, only different points will be described.
[0028]
In the present embodiment, the inner peripheral portion 16 of the flame port plate 7 is press-fitted into the outer peripheral portion 21 of the boiling guide member 17 to fix the boiling guide member 17 and the flame plate 7. Naturally, the size of the diameter of the outer peripheral portion 21 of the boiling guide plate 17 and the diameter of the inner peripheral portion 16 of the flame plate 7 are taken into consideration. It is designed to be securely fixed. Note that the same applies between the boiling prevention body 13 and the flame mouth plate 7.
[0029]
Next, the operation and action will be described. The flame mouth plate 7 and the boiling guide 17 are securely fixed, and they are not separated. In this case, since the fixing ring 25 as in the second embodiment becomes unnecessary, an inexpensive burner can be provided. Furthermore, the same improvement in combustion performance as in the first embodiment and the spillover prevention performance can be provided. Is improved.
[0030]
(Example 4)
Next, a burner according to a fourth embodiment of the present invention will be described with reference to FIG. Since the basic configuration is the same as that of the first embodiment, only different points will be described.
[0031]
In this embodiment, a play is provided between the outer peripheral portion 21 of the simmering guide 17 and the inner peripheral portion 16 of the flame port plate 7, and the outer peripheral portion 21 of the spilling guide 17 and the burner body 1 are fixed. The inner peripheral portion 3 of the mixing chamber 5, the outer peripheral side of the flame port plate 7, and the outer peripheral portion 4 of the mixing chamber 5 are attached in an airtight state. Similarly, the backlash prevention body 13 and the flame mouth plate 7 are fixed with play.
[0032]
Next, the operation and action will be described. The outer peripheral portion 21 of the boiling guide 17, the inner peripheral portion 3 of the mixing chamber 5 of the burner main body 1, and the outer peripheral side of the flame port plate 7 (in the embodiment, the boiling prevention member) Even if the axial center of the outer peripheral part 23) of the mixing chamber 5 and the outer peripheral part 4 of the mixing chamber 5 are slightly misaligned, they are misaligned with each other due to backlash, and both airtight fitting parts are fitted and attached. The mixture can be prevented from leaking.
[0033]
The airtight fitting is a component having different airtight fitting portions in order to ensure between the burner plate 7 side and the burner main body 1 and between the boiling guide 17 and the burner main body 1. Therefore, the processing accuracy for obtaining the required airtight fitting state requires only a gap between the two objects of the airtight fitting portion, and does not require both the gap and the flatness. -Can be provided. In addition, since both airtight fitting portions are controlled by the gap, there is no foreign matter caught in the gap and the airtight fitting state can be stably secured and maintained. A cooker can be provided.
[0034]
(Example 5)
Next, a burner according to a fifth embodiment of the present invention will be described with reference to FIG. Since the basic configuration is the same as that of the first embodiment, only different points will be described.
[0035]
In this embodiment, a convex portion 29 is provided on one of the outer peripheral portion 21 of the boiling guide member 17 and the inner peripheral portion 16 of the flame opening plate 7, and a concave portion 30 is provided on the other. The spill guide 17 and the flame plate 7 are fixed. In the present embodiment, the convex portion 29 is provided on the inner peripheral portion 16 of the flame mouth plate 7, and the concave portion 30 is provided on the outer peripheral portion 21 of the boiling guide 17, but may be provided in reverse. The spillover prevention member 13 and the flame port plate 7 may be similarly fixed by fitting of unevenness.
[0036]
Next, the operation and action will be described. Since the flame mouth plate 7 and the boiling guide 17 are formed by fitting the convex portion 29 and the concave portion 30, both the flame mouth plate 7 and the boiling guide 17 are rotated by an external force. And the positional relationship between the two can be reliably ensured. The same applies between the boiling prevention body 13 and the flame plate 7. As in the case of the first embodiment, the improvement of the combustion performance and the improvement of the boiling prevention performance are achieved.
[0037]
(Example 6)
Next, a burner according to a sixth embodiment of the present invention will be described with reference to FIG. Since the basic configuration of the burner is the same as in the first to fifth embodiments, only different points will be described.
[0038]
This embodiment has a point in the stove 31 using any one of the burners of the first to fifth embodiments.
[0039]
The stove 31 has a stove opening 33 of a top plate 32 on which a juice receiving tray 35 having a burner opening 34 in the center is placed, and the burner shown in each embodiment faces the burner opening 34. In the vicinity of the outer periphery of the device, there is provided a stick 37 on which a pot 36 to be heated is placed. Here, although not shown, the gotok 37 is arranged at a position corresponding to the upper part of the group of short slit holes 10 provided on the combustion surface of the burner.
[0040]
Next, the operation and the operation will be described. When the cooking is performed with the pot 36 placed on the potty 37, the flame formed by the combustion surface 12 of the burner is shortened as described in the first embodiment. Even if the distance between the pot 36 and the burner is shortened, CO and the like are unlikely to be generated, and at the same time, in the flame opening 11 of the combustion surface 12, just above the group of short slit holes 10, the sticker 37 is located. Since the flame 37 is not strongly attacked by the flame, it is possible to suppress the destruction and the heat loss of the stick 37 by the flame, thereby realizing low CO combustion and high thermal efficiency. Further, when the amount of combustion is low, the flame holding property is high and the flame becomes small, so that a state suitable for cooking with low heat can be realized. Therefore, a highly efficient and stable combustion from a high combustion amount to a low combustion amount can be realized, and a cooker excellent in cooking performance can be provided. Further, when boiling occurs from the pot 3, the boiling prevention body 13 can prevent the broth from dropping into the flame opening 11 immediately below, as described above. Since the outer end portion 19 closes a part of the lower end of the combustion surface 12 of the flame mouth plate 7, that is, the lower end of the long slit hole 9, it is possible to suppress the invasion of the boiling surface 12 into the combustion surface 12, and to prevent combustion. The influence can be reduced.
[0041]
【The invention's effect】
As described above, according to the burner of the present invention and the stove using the burner, the retention of the fuel premixed gas occurs above the flame opening plate due to the action of the boiling guide, so that the flame holding property is improved. In addition to ensuring stable combustion from high combustion to low combustion, even if there is overflowing broth, etc., a part of the combustion surface is blocked by the boiling guide, thereby preventing intrusion into the combustion surface, The effect on combustion can be reduced.
[Brief description of the drawings]
1 is a partial cross-sectional view of a burner and a stove in Examples 1 to 3 and 6 of the present invention. FIG. 2 is a plan view of the burner. FIG. 3 is a partial cross-sectional view showing a main part of a burner in a fifth embodiment of the present invention. Figure [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Burner main body 3 Inner peripheral part of mixing chamber 4 Outer peripheral part of mixing chamber 5 Mixing chamber 6 Secondary air passage 7 Flame opening plate 9 Long slit hole 10 Short slit hole 11 Flame opening portion 12 Combustion surface 16 Inner periphery of flame opening plate Part 17 Simmering guide body 20 Burner cap 21 Outer peripheral part 22 of simmering guide body Peripheral part 25 of flame opening plate Fixing ring 29 Convex part 30 Recess 31 Stove

Claims (6)

A burner main body having an annular mixing chamber and a central secondary air passage, and a burner cap mounted on the mixing chamber of the burner main body, the burner cap including a flame port plate and a boiling guide inside thereof. The spout plate has its inner surface inclined from the top to the bottom in the inner circumferential direction to form a combustion surface, and the boil-spill guide body closes a part of the combustion surface of the spout plate at the outer end thereof, The inner peripheral portion of the plate is fixed, and the outer peripheral portion of the boiler guide, the inner peripheral portion of the mixing chamber of the burner main body, the outer peripheral side of the flame port plate and the outer peripheral portion of the mixing chamber are attached in an airtight state. -Na. 2. The burner according to claim 1, wherein a fixing ring is provided on an outer peripheral portion of the boiling guide, and an end of an inner peripheral portion of the flame port plate is brought into contact with the fixing ring to fix the boiling guide and the flame port plate. . 3. The burner according to claim 1 or 2, wherein the inner periphery of the flaring plate is press-fitted into the outer periphery of the simmering guide to fix the spilling guide and the flame plate. 3. The burner according to claim 2, wherein a play is provided between the boiling guide and the inner peripheral portion of the flame plate. A convex portion is provided on one of the outer peripheral portion of the boiling guide and the inner peripheral portion of the flame plate, and a concave portion is provided on the other, and the boiling guide and the flame plate are fixed by fitting the convex portion and the concave portion. The burner according to any one of claims 1 to 3. A stove provided with the burner according to any one of claims 1 to 5.

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