JP5411240B2 - Gas stove - Google Patents

Description

  The present invention relates to a gas stove including a stove burner having a burner head that protrudes on a top plate through a burner opening established in the top plate, and a virtues installed on the top plate so as to surround the burner opening.

  Conventionally, as this type of gas stove, an air-fuel mixture is ejected on the outer peripheral portion of the burner head at each flame mouth formation region between a plurality of virtues matching regions located in the same orientation as the plurality of virtues of the five virtues. A plurality of main flame vents are formed at intervals in the circumferential direction, and each main flame vent is formed such that the mixture jet direction is inclined in one circumferential direction with respect to the radial direction of the burner head. There is known one formed such that its longitudinal direction is inclined in one circumferential direction with respect to the radial direction of the burner head (for example, see Patent Document 1).

  In this case, the flame formed by the combustion of the air-fuel mixture ejected from the main flame inlet is inclined in one circumferential direction with respect to the radial direction, and the contact length of the flame with the bottom surface of the cooking vessel placed on the virtues becomes longer. , Improve thermal efficiency. In this case, if the longitudinal direction of the five virtue claws coincides with the radial direction of the burner head, the flame extending from the main flame mouth formed at one end in the circumferential direction of each flame mouth forming region will not contact the virtue claws. Although it burns completely, it is possible to prevent the flame from contacting the virtue claws by inclining the longitudinal direction of the virtue claws in one circumferential direction with respect to the radial direction as described above.

  Here, in the above-described conventional example, the inclination angle of the air-fuel mixture ejection direction of the main flame outlet with respect to the radial direction of the burner head is made equal for all the main flame orifices. However, in this case, the circumferential interval between the flame extending from the main flame mouth formed at the other circumferential end of each flame mouth forming area and the five virtue claws adjacent thereto is widened. And in this space | interval part, since a cooking container cannot be heated effectively with a flame, the heating area of a cooking container reduces and it becomes difficult to aim at the further improvement of thermal efficiency.

JP 2003-166718 A

  This invention makes it the subject to provide the gas stove which enabled it to improve thermal efficiency as much as possible in view of the above point.

  In order to solve the above-mentioned problems, the present invention is installed in a stove burner having a burner head protruding on a top plate through a burner opening established in the top plate, and surrounding the burner opening on the top plate. A gas stove equipped with five virtues, which is located in each flame mouth forming region between a plurality of virtues matching regions located in the same direction as the plurality of virtues of the five virtues on the outer periphery of the burner head, and an air-fuel mixture spouts out A plurality of main flame vents are formed at intervals in the circumferential direction, and each main flame vent is formed such that the mixture jet direction is inclined in one circumferential direction with respect to the radial direction of the burner head. In the case where the longitudinal direction is formed so as to incline in one circumferential direction with respect to the radial direction of the burner head, the inclination angle of the air-fuel mixture ejection direction of the main flame port with respect to the radial direction of the burner head is determined by One end in the circumferential direction Characterized in that the smaller of the main flame hole forming the end portion of the other circumferential than the main flame hole to be formed.

  According to the present invention, since the inclination angle of the main flame mouth formed at the other circumferential end of each flame mouth formation region is reduced, the flame extending from the main flame mouth and the five virtue claws adjacent thereto The interval in the circumferential direction becomes narrower. And since this space | interval becomes narrow, the heating area of a cooking container increases and thermal efficiency improves.

  In the present invention, the inclination angle of each main flame mouth is directed from the main flame mouth formed at one circumferential end of each flame mouth formation region to the main flame mouth formed at the other circumferential edge. It is desirable to make them smaller in order. According to this, the angle between the flame extending from each main flame mouth and the flame extending from the main flame mouth adjacent thereto is uniform over the entire flame mouth forming region, and the thermal efficiency is improved as much as possible.

  It is also conceivable to ignite the air-fuel mixture ejected from the ignition flame with an ignition electrode, with the main flame opening formed at one place in the circumferential direction of the outer periphery of the burner head as the ignition flame. However, in this case, on the outer peripheral surface of the burner head, the target portion facing the ignition electrode is projected in a direction inclined to one side in the circumferential direction with respect to the radial direction of the burner head in accordance with the direction of air-fuel mixture ejection from the ignition flame port. It is necessary to form the target portion so that the processing of the target portion becomes troublesome.

  Here, the stove burner forms the main flame mouth as a parent burner flame mouth on the outer periphery of the burner head, and forms a plurality of child burner flame mouths with a circumferential interval below the main flame mouth. In order to increase the turn-down ratio, it is necessary to reduce the heating amount of the cooking container in a low flame that blows out the air-fuel mixture only from the child burner flame opening as much as possible. It is better to form the child burner flame port so that the mixture jet direction coincides with the radial direction of the burner head. Then, if the child burner flame port formed at one place in the circumferential direction of the burner head is an ignition flame port, the air-fuel mixture ejection direction of the ignition flame port coincides with the radial direction of the burner head. Is formed on the outer peripheral surface of the burner head so as to protrude radially from the position above the ignition flame opening, and the processing of the target portion becomes easy.

The perspective view which shows the principal part of the gas stove of embodiment of this invention. Sectional drawing cut | disconnected by the II-II line | wire of FIG. The perspective view of the stove burner provided in the gas stove of embodiment. The bottom view of the lower head member of a stove burner. The top view of the principal part of the gas stove of the state which removed the upper head member of the stove burner.

  With reference to FIG.1 and FIG.2, 1 is a top plate which covers the upper surface of the stove main body which abbreviate | omitted illustration. The top plate 1 has a burner opening 1a. Then, on the top plate 1, the virtues 2 formed by attaching a plurality of virtuosity claws 22 to the annular virtuosity frame 21 so as to surround the burner opening 1 a are installed, and the stove body is exposed to the burner opening 1 a. A stove burner 3 is installed to form a gas stove.

Figure 3 also refer, stove burners 3 is child burner, the parent burner mixing tube 4 ₁ child burner mixing tube 4 _2, both mixing tubes 4 _1, 4 ₂ in succession, is inserted into the burner opening 1a A burner body 5 and a burner head 6 mounted on the burner body 5 and projecting on the top plate 1 are provided. The outer periphery of the burner head 6, formed with a plurality to exist child burner flame hole 7 ₂ Togaotto s circumferential direction between main flame ports ₇₁ and its more downward as a parent burner flame hole. It should be noted that the circumferential region of the burner head 6 located in the same orientation as the plurality of five virtue claws 22 of Gotoku 2 (more precisely, a predetermined centering on the intersection of the burner head 6 with an inward extension line of the five virtue claws 22 the region of the circumferential extent) as trivet match area 6a, each trivet match area 6a, in order to prevent the incomplete combustion touching the flame trivet claws 22, without forming the main flame ports 7 ₁ forming only the children burner flame hole 7 _2.

The burner body 5 is composed of an inner and outer triple cylinder including an outer cylinder 51, an intermediate cylinder 52, and an inner cylinder 53, and a parent burner mixed between the intermediate cylinder 52 and the inner cylinder 53. been supplied (the mixed gas of the fuel gas and the primary air) mixture from the tube 4 _1, the air-fuel mixture from the child burner mixing tube 4 ₂ between the outer cylinder 51 and the intermediate cylinder 52 is supplied. The outer cylindrical body 51 is provided with a skirt portion 51a that hangs down from the outer periphery of the upper end portion. Then, a burner ring 54 that covers the burner opening 1 a is extrapolated to the skirt portion 51 a, and the five virtue frames 21 are extrapolated to the burner ring 54, so that the five virtues 2 can be centered with respect to the stove burner 3. .

  Further, an ignition electrode 8 and a thermocouple 9 projecting upward through the burner ring 54 are attached to the burner 3, and the burner ring 54 is prevented from rotating with respect to the burner 3 by the ignition electrode 8 and the thermocouple 9. Is done. And while forming the protrusion 21a in two places of the inner periphery of the five virtue frame 21, forming the notch 54a in two places of the outer periphery of the burner ring 54, and engaging each protrusion 21a with each notch 54a, The virtues 2 can be phased with respect to the combo burner 3.

  The burner head 6 includes an outer cylinder portion 61a that is seated on the upper end portion of the outer cylinder body 51 of the burner body 5, and an intermediate cylinder body 52 of the burner body 5 that protrudes inward from the lower inner periphery of the outer cylinder portion 61a and extends downward. An annular lower head member 61 having an inner cylinder portion 61b fitted to the inner cylinder portion 61b, and a cylindrical portion 62a that is seated on the upper end of the outer cylinder portion 61a and fitted to the inner cylinder body 53 of the burner body 5 are provided vertically on the lower surface. And a disk-shaped upper head member 62.

The outer cylindrical portion 61a of the lower head member 61, a groove which is located on the flame hole formation region between a plurality of trivet match area 6a, consisting of an upper end surface of the outer tube portion 61a and the main flame hole ₇₁ recessed downward Are formed at intervals in the circumferential direction. Then, the upper end of these grooves are closed by the upper head member 62, Omoen port ₇₁ is defined between the lower head member 61 and the upper head member 62, supplied from the parent burner mixing tube 4 ₁ mixture to be is to be ejected from the main flame hole _71. Incidentally, in order to improve the combustion resistance, and to reduce the main flame ports ₇₁ of the size to two every.

The outer cylindrical portion 61a, and is further formed with a plurality of grooves serving as Kubomuko burner flame hole 7 ₂ upward from the lower end surface to exist in the circumferential direction of the spacing. Then, the lower end of these grooves are closed by the upper end of the outer tubular member 51, made child burner flame hole 7 ₂ image between the external cylinder body 51 and the lower head member 61, the child burner mixing tube 4 _The air-fuel mixture supplied from _{2 is} ejected from the child burner flame outlet 72.

  2 and 3, a plurality of leg pieces 62 b are suspended from the lower surface of the upper head member 62 in the same circumferential direction as the plurality of virtues matching regions 6 a. A C-shaped ring 62c is attached to the lower end of the leg piece 62b so as to be inscribed therein. On the other hand, in the upper part of the inner peripheral surface of the outer cylinder portion 61a of the lower head member 61, the inner groove portion 61c of each leg piece portion 65 is located inward from both sides of the upper end portion of the insertion groove portion 61c. A pair of claw portions 61d projecting from each other is formed. When the upper head member 62 is lifted, the ring 62c is caught by the claw portion 61d so that the upper head member 62 cannot be removed unless the diameter of the ring 62c is reduced.

Referring to FIG. 4, the child burner flame hole 7 _2, radial ejection direction of the mixture through the center of the burner head 6, i.e., is formed so as to coincide with the radial direction of the burner head 6, further , circumferential one place of the burner head 6 of the child burner flame hole 7 ₂ (in this embodiment, one central trivet match area 6a) which forms the is in the ignition flame hole 7 _{2 a.} Further, a target portion 63 that protrudes in the radial direction of the burner head 6 from the upper position of the ignition flame port 7 ₂ a is formed on the outer peripheral surface of the outer cylinder portion 61 a, and the ignition electrode is opposed to the target portion 63 from below. 8 is installed (see FIGS. 1 and 2). Then, the spark outlet 7 ₂ a is ignited by spark discharge between the ignition electrode 8 and the target portion 63, and the main flame outlet 7 ₂ a is moved from the ignition flame 7 ₂ a to the child burner flame 7 _2. when jetted air mixture from _1, so as to flame diffusion from the child burner flame hole 7 ₂ to the main flame hole _71.

Referring to FIG. 5, the main flame ports 7 _1, mixture ejection direction (in the present embodiment, clockwise) one circumferential direction with respect to the radial direction of the burner head 6 is formed so as to be inclined . According to this, the main flame hole ₇₁ flame formed by combustion of the mixture jetted from is inclined in one circumferential direction with respect to the radial direction, the contact length of the flame relative to the bottom surface of the cooking container placed on the trivet 2 Increases the thermal efficiency. In this case, the longitudinal direction of the trivet claws 22 coincides with the radial direction of the burner head 6, flame trivet claws extending from the main flame hole ₇₁ to form the end portion in the circumferential direction one each burner port formation area 22 Incomplete combustion on contact. Therefore, the longitudinal direction of the virtuosity claw 22 is also inclined in the clockwise direction with respect to the radial direction of the burner head 6 so that the flame can be prevented from coming into contact with the virtuosity claw 22.

Further, the inclination angle of the air-fuel mixture injection direction of the main flame ports ₇₁ for radiating direction of the burner head 6, the main flame hole ₇₁ other circumferential than that formed at one end a circumferential direction of the burner port formation region ( towards the main flame ports ₇₁ for forming the end portion of the counter-clockwise direction) is set to be smaller. In detail, in the present embodiment, the inclination angle α of 25 ° of the main flame ports ₇₁ in the circumferential direction one end portion of the flame hole formation region, the main flame hole of the other circumferential end portion 7 ₁ of the inclination angle β is set to 10 °, towards the main flame hole ₇₁ to form a main flame hole ₇₁ to the end portion of the other circumferential forming at one end a circumferential direction of the burner port formed region the inclination angle of each main flame ports 7 ₁ Te is set to be smaller one by 1.5 °. Incidentally, the inclination angle γ of the virtuosity claw 22 with respect to the radial direction of the burner head 6 is set to 10 °.

Here, by setting all of the inclination angle of the main flame openings 7 ₁ to 25 °, as shown in phantom in FIG. 5, the claw portion from the embodiment the main flame ports _{71 'of} the other circumferential end portion be formed in a position close to 61d, the circumferential spacing L'between the trivet claws 22 adjacent a _'flame extending from (main flame ports _71' the main flame hole ₇₁ extended line of) thereto It becomes relatively wide. And in this space | interval part, since a cooking container cannot be heated effectively with a flame, the heating area of a cooking container will reduce. In the position close to the burner head 6, the circumferential interval between the inward extension line of the five virtue claws 22 and the extension line of the main flame outlet 7 ₁ ′ becomes narrow. It does not stand up enough to touch the bottom of the cooking container, and the thermal efficiency cannot be improved.

In contrast, in the present embodiment, the other circumferential of each burner port forming region to reduce the inclination angle β of the main flame ports ₇₁ end, the flame of the cooking container away than a certain from the burner head 6 in the portion touching the bottom, the circumferential distance L is the distance between the trivet claws 22 adjacent to thereto flame extending from the main flame hole ₇₁ in the other circumferential end portion (an extended line of the main flame ports 7 ₁₎ It becomes narrower than L ′. And since the space | interval L becomes narrow, the heating area of a cooking container increases and thermal efficiency improves.

Further, in the present embodiment, the main forming the inclination angle of each main flame ports _71, the end portion of the peripheral from the main flame hole ₇₁ to be formed in one end direction of the other circumferential each burner port formed region because toward the burner ports ₇₁ are sequentially smaller, uniform angle throughout the flame hole formation region between the flame and the flame extending from the main flame port ₇₁ adjacent thereto extending from the main flame ports 7 ₁ And the thermal efficiency is improved as much as possible.

Meanwhile, the main flame hole ₇₁ to be formed in the circumferential direction one position of the outer periphery of the burner head 6 as an ignition flame hole, it is conceivable to ignite by the ignition electrode mixture gas ejected from the ignition flame hole. However, in this case, on the outer peripheral surface of the burner head 6, the target portion opposed to the ignition electrode is inclined in one circumferential direction with respect to the radial direction of the burner head 6 in accordance with the mixture jet direction from the ignition flame port. It is necessary to form the protrusion so as to protrude into the surface, and the processing of the target portion becomes troublesome.

Here, if the stove burner 3 is child burner as in the present embodiment, in order to increase the turn-down ratio, as possible heating of the cooking container at the time of low heat for ejecting the mixture from only child burner flame hole 7 ₂ It is necessary to make it smaller. To do so, the child burner flame hole 7 _2, it is better mixture injection direction as in the present embodiment is formed so as to coincide with the radial direction of the burner head 6. Then, if the child burner flame port formed at one place in the circumferential direction of the burner head 6 is the ignition flame port 7 ₂ a, the air-fuel mixture is ejected from the ignition flame port 7 ₂ a in the radial direction of the burner head 6. the target portion 63 that faces the electrode 8, need be formed so as to protrude radially from a position above the pilot flame outlet 7 _{2 a} of the outer peripheral surface of the burner head 6. As a result, the processing of the target portion 63 is facilitated.

As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to this. For example, the above embodiment is a gas stove comprising a stove burner 3 consisting of parents burner likewise present invention stove with a conventional stove burner having no child burner mixing tube 4 ₂ and sub burner flame hole 7 ₂ Can be applied.

DESCRIPTION OF SYMBOLS 1 ... Top plate, 1a ... Burner opening, 2 ... Gotoku, 22 ... Gotoku nail, 3 ... Conburner, 6 ... Burner head, 63 ... Target part, 7 ₁ ... Main flame mouth, 7 ₂ ... Child burner flame mouth, 7 ₂ a: Ignition flame port, 8: Ignition electrode.

Claims (3)

A gas stove comprising a stove burner having a burner head projecting on the top plate through the burner opening established in the top plate, and a virtues installed so as to surround the burner opening on the top plate,
At the outer peripheral part of the burner head, the main flame outlet from which the air-fuel mixture is ejected is positioned in the circumferential direction between each of the five virtue matching areas located in the same direction as the plural virtue claws of the five virtues. The main flame outlets are formed such that the mixture jet direction is inclined in one circumferential direction with respect to the radial direction of the burner head. In what is formed so as to be inclined in one circumferential direction with respect to the direction,
The inclination angle of the air-fuel mixture ejection direction of the main flame outlet with respect to the radial direction of the burner head is the main flame formed at the other end in the circumferential direction rather than the main flame mouth formed at one end in the circumferential direction of each flame mouth formation region. Gas stove with a smaller mouth.   The inclination angle of each main flame mouth is sequentially reduced from the main flame mouth formed at one end in the circumferential direction of each flame mouth formation region toward the main flame mouth formed at the other edge in the circumferential direction. The gas stove according to claim 1 characterized by these.   The stove burner forms the main flame mouth as a parent burner flame mouth on the outer periphery of the burner head, and forms a plurality of child burner flame mouths with a circumferential interval below the main flame mouth. Each child burner flame mouth is formed such that the mixture jet direction coincides with the radial direction of the burner head, and the child burner flame mouth formed at one place in the circumferential direction of the burner head is an ignition flame mouth, The gas stove according to claim 1 or 2, wherein a target portion facing the ignition electrode is formed on the outer peripheral surface of the burner head so as to project in a radial direction from a position above the ignition flame opening.

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