JP4662573B2 - Gas stove - Google Patents

Description

  The present invention relates to a gas stove having a burner ring that covers a gap between a peripheral edge of a burner opening provided on a top plate and an outer peripheral surface of a gas burner protruding from the burner opening.

  Conventionally, as shown in FIG. 7, the gas stove 501 has a configuration in which a gas burner 502 is accommodated in a stove body 510 that is a rectangular box body that is open upward, and an upper open portion of the stove body 510 is covered with a top plate 503. Is known (see Patent Document 1). In this type of gas stove, the burner head 520 and the burner body 521 of the gas burner 502 are protruded upward from a burner opening 530 formed at a predetermined position of the top plate 503.

  The burner head 520 is placed on the upper end of the burner body 521, and a number of flame hole groups 523 are formed between the lower surface of the burner head 520 and the upper surface of the burner body 521. The burner body 521 and the burner head 520 are protruded above the top plate 503 from the burner opening 530 so that the flame hole group 523 is exposed above the top plate 503.

  In the gas stove 501, an annular gap Sa is formed between the periphery of the burner opening 530 and the outer peripheral surface of the burner body 521. An annular burner ring 504 and a flat plate ring shape are formed so as to close the gap Sa. The lower ring 560 is arranged.

  To attach the burner ring 504 and the lower ring 560 to the top plate 503, two ring-shaped upper packings 571 and a lower packing 572 are arranged on the upper and lower surfaces of the periphery of the burner opening 530 as shown in FIG. In this state, the lower ring 560 is disposed on the back surface of the top plate 503, and the burner ring 504 is disposed on the front surface. In this state, by fixing the lower ring 560 and the burner ring 504 with the fixing screw 531, the burner ring 504 and the lower ring 560 are fixed to the peripheral edge of the burner opening 530 of the top plate 503, and the gap Sa is closed. The

  With such a configuration, even if the burner ring 504 and the lower ring 560 are fixed to the top plate 503 with the gap Sa closed so that the burner ring 504 and the lower ring 560 do not rotate. , 572 prevents the spillage from entering the inside of the stove body 510.

JP 2008-249178 A

  By the way, the burner ring is placed on the surface of the top plate at the outer periphery in the radial direction of the burner opening. In this case, in order to prevent the burner ring from tilting, it is preferable to form the outer peripheral edge so that the entire lower end of the outer peripheral edge uniformly contacts the top plate. However, since such processing is very difficult in terms of processing accuracy, when spilling occurs, the spilling occurs from the gap between the lower edge of the outer peripheral edge of the burner ring and the surface of the top plate. If the amount of spillage increases, the spillage may flow into the stove body.

  The present invention has been made in order to solve the above problems, and an object of the present invention is to provide a gas stove that can reduce the inflow of spilled food into the stove body even when spilled food is produced.

The present invention provides a burner in which a top plate is attached to an upper open portion of a stove body, and covers a gap between a peripheral edge of a burner opening provided on the top plate and an outer peripheral surface of a gas burner protruding from the burner opening. In a gas stove in which a ring is disposed on the top plate,
The burner ring is a gas stove having a plurality of convex portions extending in the circumferential direction at the lower end of the outer peripheral edge of the burner ring and a concave portion between the plurality of convex portions.

  According to the gas stove, the plurality of convex portions extending in the circumferential direction at the lower end of the outer peripheral edge of the burner ring and the concave portions are formed between the plurality of convex portions. The penetration speed of liquid (boiled) into the burner ring is different between the part and the concave part, and this causes the balance of the surface tension of the liquid at the lower end of the outer peripheral edge to be lost. Capillary phenomenon that the liquid crawls up on the wall surface can be made difficult to occur. For this reason, boiled spillage flows in the circumferential direction toward the concave portion and stays in the concave portion, not on the radially inner side of the burner ring, at the outer peripheral edge of the burner ring. Since the cross-sectional area of the concave portion is larger than the passage cross-sectional area of the convex portion, the flow rate of the liquid staying in the concave portion is slower than the flow rate flowing through the gap between the convex portion and the surface of the top plate. It becomes difficult to enter the inner side in the radial direction from the outer periphery of the ring. Thereby, it can reduce that the spilled oil flows into the inside of the stove body.

  Moreover, the said gas stove WHEREIN: As for the level | step difference of the said convex part and a recessed part, 1-3 mm is preferable. If it is the said level | step difference, the capillary phenomenon of the spilling which permeates from the outer periphery of a burner ring can be suppressed effectively.

  Furthermore, in the circumferential direction of the burner ring, the convex portion is preferably formed smaller than the concave portion.

  As described above, according to the gas stove according to the present invention, in the event that spillage occurs, the infiltration of spillage into the burner ring can be suppressed, and the spillage can be prevented from flowing into the stove body. it can.

It is principal part sectional drawing which shows an example of the inside of the gas stove which concerns on embodiment of this invention. It is a top view which shows an example of the state which removed the top plate, burner ring, and burner head of the gas stove which concerns on embodiment of this invention. It is a perspective view which shows an example of the state which removed the burner ring of the gas stove which concerns on embodiment of this invention. It is a perspective view which shows an example of the virtues and burnering used for the gas stove which concerns on embodiment of this invention. It is the perspective view which looked at the burner ring used for the gas stove which concerns on embodiment of this invention from the lower surface side. It is a principal part expanded sectional view which shows the positional relationship of the burner ring inside a gas stove shown in FIG. 1, and a top plate. It is principal part sectional drawing which shows the inside of the conventional gas stove. It is a principal part expanded sectional view which shows the attachment state of the burner ring of the conventional gas stove.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
As shown in FIG. 1, the gas stove 1 according to the present embodiment has one or more gas burners 2 housed in a stove body 10 that is a rectangular box body that is open upward, and the upper open portion of the stove body 10 is a thin metal. It has the structure coat | covered with the top plate 3 which consists of a board. The top plate 3 is locked to the periphery of the stove main body 10 (not shown), and the top plate 3 is formed with burner openings 30 at respective positions corresponding to the gas burner 2.

  The gas burner 2 protrudes upward from the burner opening 30 of the top plate 3, and an annular gap S <b> 1 is formed between the peripheral edge of the burner opening 30 and the outer peripheral surface of the burner body 22 of the gas burner 2. . And the annular burner ring 4 is installed in the surface of the top plate 3 so that this clearance gap S1 may be obstruct | occluded. Furthermore, the virtues 5 are arranged on the top plate 3 so as to surround the burner ring 4.

  As shown in FIGS. 1 to 3, the gas burner 2 includes a burner body 22 that extends upward from the downstream end of the mixing pipe 21 (see FIG. 2), a burner head 23 that is placed on the burner body 22, A burner cap 24 disposed on the burner head 23 is provided, and a flame hole group 25 including a large number of flame holes is formed in an annular shape on the outer periphery between the burner head 23 and the burner body 22. A pan bottom temperature sensor 26 is provided above the burner cap 24 at the center of the burner head 23.

  Further, an outer peripheral flange portion 22 a extending radially outward is formed at the lower end of the burner body 22, and the outer peripheral flange portion 22 a is fixed to the burner support base 27 fixed in the stove body 10 with screws. As a result, the burner body 22 is fixed in the stove body 10. As shown in FIGS. 2 and 3, an ignition electrode 31 and a flame detector 32 are disposed on the outer peripheral portion of the burner body 22.

  As shown in FIGS. 4 and 5, the burner ring 4 is formed with a notch 41 for arranging the ignition electrode 31 and a notch 42 for arranging the flame detector 32 at the inner periphery of the ring. A pair of notches 43 for positioning the virtues 5 are provided on the outer peripheral edge of the burner ring 4 so as to face each other. Further, a pair of claw portions 44 are formed on the lower surface 4 a radially inward from the outer peripheral edge of the burner ring 4 so as to protrude downward at positions facing each other. The claw portions 44 are formed with elongated holes 44 a extending in the vertical direction as through holes penetrating the claw portions 44. The length of the claw portion 44 is formed such that when the burner ring 4 is placed on the top plate 3, the tip portion of the claw portion 44 is fitted into a locking hole 62 of the support member 6 described later. Yes. The length of the long hole 44 a in the vertical direction is such that the upper end is located above the insertion hole 33 of the top plate 3 and the lower end is located below the lower surface of the support member 6 when viewed in the normal direction of the top plate 3. It is formed to do. Further, the upper end of the long hole 44 a is formed so as not to reach the lower surface 4 a of the burner ring 4. In the present embodiment, a long hole is provided as a through hole. However, the present invention is not necessarily limited to this shape. For example, a through hole having a shape with an open lower end may be provided.

  Further, a side wall 45 is formed on the outer peripheral edge of the burner ring 4, and the lower end 40 of the side wall 45 extends in an arc shape in the circumferential direction as shown in FIGS. 4 and 5, and is substantially in contact with the top plate 3. A plurality of convex portions 46 arranged in a state, and a concave portion 47 formed between the plurality of convex portions 46 and having an end surface above the end surface of the convex portion 46 are formed. In the present embodiment, four convex portions 46 are formed in the circumferential direction, and the end surfaces of any convex portion 46 are formed to be on the same plane. Further, the two convex portions 46 are provided so as to face the claw portions 44 of the burner ring 4 in the radial direction. The step between the convex portion 46 and the concave portion 47 is preferably about 1 to 3 mm in order to effectively suppress the spilled capillary phenomenon entering from the outer peripheral edge of the burner ring 4.

  As shown in FIG. 4, the five virtues 5 are composed of an annular five virtue frame 51 arranged on the outer periphery of the burner ring 4 and a plurality of five virtue claws 50 attached thereto. Among the five virtue claws 50, the pair of the five virtue claws 50 facing each other has an extension portion 52 whose lower side portion is extended inward from the gortoku frame 51, and these extension portions 52 are formed on the burner ring 4. It is each latched by the notch part 43 provided in the outer periphery. Thereby, the rotation of the virtues 5 is prevented from rotating with respect to the burner ring 4, and the center of the burner ring 4 and the center of the virtues 5 are matched.

  Further, as shown in FIGS. 1 and 2, a support member 6 is disposed at a position below the top plate 3 in the stove body 10 and facing the burner opening 30. The support member 6 is a plate-like body in which an opening 61 is formed at a position corresponding to the burner opening 30 of the top plate 3. Referring to FIG. 2, the opening 61 is formed in a deformed round hole shape in which a part of an arc portion concentric with the burner body 22 is expanded in diameter by inserting the ignition electrode 31 and the flame detector 32. . Therefore, the center of the concentric arc part of the opening 61 excluding the enlarged part coincides with the center of the burner body 22. In addition, the support member 6 is provided with a pair of locking holes 62 that pass through the claw portions 44 of the burner ring 4 and lock around the opening 61.

  A first support leg 63 is suspended from one side (upper side in FIG. 2) of the support member 6, and two tongue pieces juxtaposed by bending the lower end of the first support leg 63 inward at a right angle. 63a is formed. These tongue pieces 63 a are screwed to the burner support 27 together with the outer peripheral flange portion 22 a of the gas burner 2 by positioning screws 64.

  Further, as shown in FIGS. 1 and 2, a second support leg 65 and a third support leg 66 are respectively suspended from other opposing sides (left and right sides in FIG. 2) of the support member 6. . Each of the second support leg 65 and the third support leg 66 is formed with fixing pieces 65a and 66a by bending the lower ends thereof at right angles to the outside. These fixing pieces 65a and 66a are fixed to the burner support base 27 with screws or the like. Thus, the support member 6 is fixed in the stove main body 10 by fixing the tongue piece 63a and the fixing pieces 65a and 66a to the burner support base 27 fixed in the stove main body 10 with screws or the like. .

  Further, the top plate 3 is formed with an insertion hole 33 through which the claw portion 44 of the burner ring 4 penetrates in a loosely fitted state when the burner ring 4 is placed. These insertion holes 33 are formed so as to face the locking holes 62 of the support member 6 when the top plate 3 is assembled to the stove body 10.

  In the gas stove 1 of the present embodiment, the burner support base 27 is fixed in the stove main body 10, the gas burner 2 is fixed to the burner support base 27, and the support member 6 is fixed. At this time, the gas burner 2 and the support member 6 are fixed to the burner support 27 so that the center of the annular flame hole group 25 formed at the upper end of the burner body 22 coincides with the center of the opening 61 of the support member 6. Is done.

  And the upper open part of the stove main body 10 is obstruct | occluded by latching the top plate 3 to the periphery of the stove main body 10. FIG. In this state, the burner head 23, the burner body 22, the ignition electrode 31, and the flame detector 32 of the gas burner 2 are installed from the burner opening 30 so as to protrude above the top plate 3. In addition, a gap S <b> 2 is formed between the top plate 3 and the support member 6, and the locking hole 62 of the support member 6 is positioned below the insertion hole 33 of the top plate 3.

Furthermore, the burner ring 4 is installed on the top plate 3 so as to cover the gap S1 between the periphery of the burner opening 30 and the burner body 22. At this time, the claw portion 44 protruding from the lower surface 4 a of the burner ring 4 is continuously inserted through the insertion hole 33 of the top plate 3 and the locking hole 62 of the support member 6. Here, the insertion hole 33 is set to a size that allows the claw portion 44 to be inserted with a margin, the locking hole 62 is smaller than the insertion hole 33, and the claw portion 44 is fitted into the locking hole 62. The size is set to be locked.

  Therefore, when the burner ring 4 is installed on the top plate 3, the claw portion 44 is inserted into the loosely inserted state at the insertion hole 33 and is engaged at the locking hole 62. Thereby, the center of the opening 61 of the support member 6 and the center of the burner ring 4 coincide. At this time, the ignition electrode 31 and the flame detector 32 are arranged in the notches 41 and 42 of the burner ring 4.

  After the burner ring 4 is installed with the support member 6 positioned as described above, the five virtues 5 are installed around the burner ring 4. At this time, the extension portion 52 of the five virtue claws 50 of the five virtues 5 is locked to the notch 43 formed on the outer peripheral edge of the burner ring 4. As a result, the center of the annular virtuosity frame 51 to which the virtuosity claw 50 is connected is positioned in a state where it coincides with the center of the burner ring 4, and the virtuosity claw 50 is prevented from rotating in the circumferential direction together with the burner ring 4. Is done. Thus, the assembly of the gas stove 1 is completed.

  As described above, according to the gas stove 1 according to the present embodiment, by simply inserting the claw portion 44 of the burner ring 4 into the insertion hole 33 of the top plate 3 and the locking hole 62 of the support member 6, The center of the five virtues 5 and the center of the gas burner 2 can be matched without the burner ring 4 rotating. Further, the burner ring 4 is in a state in which the center thereof coincides with the center of the opening 61 of the support member 6, that is, the flame of the gas burner 2, regardless of a slight shift in the installation state of the top plate 3. It is installed on the top board 3 in a state where it coincides with the center of the hole group 25. Furthermore, according to the present embodiment, the claw portion 44 of the burner ring 4 is inserted through the insertion hole 33 of the top plate 3 and the locking hole 62 of the support member 6. The member 6 can be attached so as not to rotate.

  Since the burner ring 4 has the claw portion 44 and the top plate 3 has the insertion hole 33 through which the claw portion 44 is inserted as described above, when the spillage occurs, the cooker body 10 is boiled inside. Although the spillage easily flows, a plurality of convex portions 46 and concave portions 47 are continuously formed between the plurality of convex portions 46 at the lower end 40 of the outer peripheral edge of the burner ring 4 of the present embodiment. Therefore, the infiltration of the spilled oil into the burner ring 4 can be effectively suppressed. That is, when spilling occurs in the gas stove 1, most of the spilling falls on the outer surface of the burner ring 4, and flows down toward the lower end of the outer peripheral edge of the burner ring 4. 4 stays between the outer periphery. Then, the spilled spilled water crawls up from the outer peripheral edge of the burner ring 4 to the wall surface of the lower surface 4a inward in the radial direction by a capillary phenomenon, and a part thereof falls on the surface of the top plate 3 inside the burner ring 4. Then, it flows into the stove main body 10 from the insertion hole 33 provided in the top plate 3. However, the lower end 40 of the outer peripheral edge of the burner ring 4 is formed with a plurality of convex portions 46 and concave portions 47 extending in an arc shape in the circumferential direction. And the recess 47 have different infiltration speeds of the liquid into the burner ring 4, thereby causing the balance of the surface tension of the liquid at the lower end 40 of the outer peripheral edge to be lost, and the diameter of the wall surface of the lower surface 4 a from the outer peripheral edge of the burner ring 4. Capillary phenomenon that the liquid crawls inward in the direction can be made difficult to occur. For this reason, the spilled oil flows in the circumferential direction toward the recess 47 and stays in the vicinity of the recess 47 at the outer peripheral edge of the burner ring 4, not in the radial inner side of the burner ring 4. Since the gap between the concave portion 47 and the surface of the top plate 3 is larger than the gap between the convex portion 46 and the surface of the top plate 3, the sectional area of the concave portion 47 is larger than the passage sectional area of the convex portion 46. Therefore, the flow rate of the liquid staying in the concave portion 47 is slower than the flow velocity flowing through the gap between the convex portion 46 and the surface of the top plate 3. Thereby, it is difficult for the spilled portion to enter the radially inner side from the outer peripheral edge of the burner ring 4, and the spilled portion can be reduced from flowing into the stove body 10.

  Further, in the gas stove 1 of the present embodiment, the projection 46 is formed in the radial direction of the burner ring 4 so as to face the claw 44 inserted through the insertion hole 33 of the top plate 3. In the vicinity of the spilled liquid, it becomes difficult for the spilled liquid to flow in, and it is possible to satisfactorily prevent the liquid from flowing into the insertion hole 33 through which the claw portion 44 is inserted.

  Further, when the amount of the spilled portion that flows into the vicinity of the insertion hole 33 increases, the spilled portion flows between the peripheral edge of the insertion hole 33 and the claw portion 44 that protrudes downward, and the capillary phenomenon occurs through the claw portion 44. However, in the gas stove 1 of the present embodiment, the peripheral edge of the insertion hole 33 faces the elongated hole 44a of the claw portion 44, so that the spilled portion is near the insertion hole 33 of the top plate 3. Even if it reaches, the contact area between the spilled liquid and the claw portion 44 can be reduced. Thereby, it can suppress that a liquid flows down through the nail | claw part 44 by capillary action.

  Furthermore, the upper end of the long hole 44a of the claw portion 44 does not extend to the lower surface 4a of the burner ring 4, so that the spilled liquid that has entered rises along the wall surface of the lower surface 4a of the burner ring 4 by capillary action. Even if the base of the claw portion 44 is reached, the liquid can be prevented from flowing down along the long hole 44a.

  In addition, when the present inventors conducted an experiment to measure the amount of inflow into the gas stove main body with respect to the amount of spillage, when using a burner ring that does not have a convex part and a concave part at the lower end of the outer peripheral edge, About 90 vol% of the spillage amount has flowed into the stove body, whereas when using the burner ring having the above configuration, it has been confirmed that only a very small amount of 5 vol% of the spillage amount flows into the gas stove body. . In addition, this small amount of boiled spilled also flowed into the stove body from the gap between the outer peripheral surface of the burner body and the burner opening, and almost no spilled boiled into the stove body through the insertion hole was seen. . At this time, since a large amount of spilled liquid was retained on the top plate, it was confirmed that intrusion into the burner ring was reduced.

DESCRIPTION OF SYMBOLS 1 Gas stove 2 Gas burner 3 Top plate 30 Burner opening 33 Insertion hole 4 Burner ring 4a Bottom surface 44 Claw part 44a Long hole 46 Convex part 47 Concave part 5 Gotoku 6 Support member 10 Stove body S1 Crevice

Claims (3)

A top plate is attached to the upper open portion of the stove body, and a burner ring that covers a gap between the peripheral edge of the burner opening provided on the top plate and the outer peripheral surface of the gas burner protruding from the burner opening is the top plate. In the gas stove arranged on the plate,
The burner ring is a gas stove having a plurality of convex portions extending in the circumferential direction at the lower end of the outer peripheral edge of the burner ring and a concave portion between the plurality of convex portions.   The gas stove according to claim 1, wherein a step between the convex portion and the concave portion is 1 to 3 mm. The gas stove according to claim 1 or 2, wherein the convex portion is formed smaller than the concave portion in a circumferential direction of the burner ring.