JP2012093014A - Gas cooking stove - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas cooking stove by which a user can surely recognize that a burner cap is not properly placed on a burner body when the burner cap is not properly placed on the governor body.SOLUTION: A stove burner 2 is projected above a top plate 11 and a trivet 12 is placed on the top plate 11. The stove burner 2 includes the burner body 3 having a burner cap placing part 31 which is shaped annularly in a planar view, and the burner cap 4 placed on the burner cap placing part 31. A main projection 5 for positioning and sub-projections 6 for positioning are formed in a projecting manner on the lower face of the burner cap 4, and an insertion part 7 for positioning in which the main projection 5 can be inserted is formed in the burner cap placing part 31. When the main projection 5 is inserted into the insertion part 7 for positioning, the burner cap 4 is situated below the upper end of the trivet 12, and when not inserted, the burner cap 4 is situated above the upper end of the trivet 12.

Description

  The present invention relates to a gas stove including a stove burner in which a burner cap is placed on a burner body.

  2. Description of the Related Art Conventionally, a gas stove including a stove burner that has a burner cap placed on a burner body and protrudes upward through an opening of a top plate is well known (see, for example, Patent Document 1). The burner body has a mixing chamber that opens upward inside a burner cap mounting portion that has an annular shape in plan view. The burner cap is mounted on the burner cap mounting portion, and an outer surface around the stove burner. A flame hole is formed on the surface.

  In the gas stove disclosed in Patent Document 1, a fitting positioning projection is provided on the burner cap, and a fitting opening hole is formed in the burner head (burner body). When the burner cap is properly placed on the burner head (that is, at a predetermined position and in a predetermined direction), the fitting positioning protrusion provided on the burner cap is fitted into the fitting opening hole of the burner head. The burner cap falls downward and the burner cap can be stably placed on the burner head.

  However, when the burner cap is not properly placed on the burner head, the fitting positioning protrusion provided on the burner cap does not fit into the fitting opening hole of the burner head, and the burner cap is lifted from the burner head and unstable. At the same time, the predetermined flame hole is not formed, and the flow of the fuel gas is not as designed, and there is a possibility that the predetermined flame is not formed.

JP 2000-193212 A

  The present invention has been invented in view of the above-described conventional problems, and the object of the present invention is to provide a user with a burner cap when the burner cap is not properly placed on the burner body. It is an object of the present invention to provide a gas stove that can surely recognize that it is not properly placed thereon.

  In order to solve the above problem, the gas stove 1 according to claim 1 is provided so that the stove burner 2 protrudes upward through an opening formed in the top plate 11, and the top plate 11 around the opening. The burner cap 2 has the mixing chamber 32 that opens upward inside the burner cap mounting portion 31 having a ring shape in plan view. A burner cap 4 having a notch or opening 41 serving as a flame hole on the outer peripheral surface thereof is placed on 31, and a positioning main projection 5 and a positioning sub-projection 6 project from the lower surface of the burner cap 4. In addition, a positioning insertion portion 7 into which the positioning main projection 5 can be inserted is formed on the burner cap mounting portion 31 of the stove burner 2, and the positioning main projection 5 is positioned. When inserted into the insertion target portion 7, the positioning sub-projection 6 is accommodated in the mixing chamber 32, the burner cap 4 is positioned below the upper end of the virtues 12, and the positioning main projection 5 Is not inserted into the positioning insertion portion 7, at least one of the positioning main projection 5 or the positioning sub-projection 6 abuts on the upper surface of the burner cap mounting portion 31, and the burner cap 4 The positioning main projection 5 and the positioning sub-projection 6 are formed so as to be positioned above the upper end portion of the projection.

  Accordingly, when the burner cap 4 is not properly placed on the burner cap placement portion 31 and the positioning main projection 5 is not inserted into the positioning insertion portion 7, the positioning main projection 5 or the positioning sub-projection 6 is in contact with the upper surface of the burner cap placing portion 31 and the upper end portion of the burner cap 4 is located above the upper end portion of the five victories 12 placed on the top plate 11, so that the user can It is possible to reliably recognize that the burner cap 4 is not properly placed on the burner cap placement portion 31.

  Further, the invention according to claim 2 is the invention according to claim 1, wherein the positioning sub-projection 6 includes the burner in a plan view when the positioning main projection 5 is inserted into the positioning insertion portion 7. The cap mounting portion 31 is provided at a plurality of locations along the surface of the mixing chamber 32 side.

  This increases the degree of freedom in design when providing the positioning sub-projections 6.

  The invention according to claim 3 is the invention according to claim 1 or 2, wherein the flame detection means 21 and / or the ignition means 22 are provided in a part of the circumferential direction of the burner body 3, and the positioning sub-projections 6 are provided. Is provided at a place other than the place where the flame detecting means 21 and the ignition means 22 are provided.

  Thereby, it can be avoided that the positioning sub-projections 6 prevent the flame detection means 21 and the ignition means 22 from reaching the flame and the fuel gas.

  In the present invention, when the burner cap is not properly placed on the burner cap placement portion of the burner body, the user can surely recognize that the burner cap is not properly placed, and the burner cap However, it is possible to prevent inconveniences caused by not being properly placed on the burner cap placement portion of the burner body.

It is the whole gas stove of one embodiment of the present invention. It is a perspective view except the top plate of the gas stove same as the above, and the right-hand side stove burner. It is explanatory drawing which shows the flow-path structure of the fuel gas of a gas stove same as the above. The stove burner is shown, wherein (a) is a perspective view of the burner body viewed from above, (b) is a perspective view of the burner cap viewed from above, and (c) is a burner cap viewed from below. It is a perspective view. It is a principal part perspective view of the state which removed the burner cap same as the above from the burner main body of a gas stove. It is a top view of a burner cap same as the above. It is sectional drawing of a burner cap same as the above. It is a principal part top view of the gas stove which removed the burner cap same as the above, and a dashed-dotted line shows the main protrusion for positioning and the subprotrusion for positioning when a burner cap is mounted normally. It is principal part sectional drawing of the gas stove which removed the burner cap same as the above. It is principal part sectional drawing of the gas stove which mounted the burner cap same as the above normally. It is principal part sectional drawing of the gas stove which mounted the burner cap same as the above erroneously.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings. In this embodiment, a stove with a grill that is generally widely used as a gas stove will be described. However, a gas stove without a grill may be used. Moreover, it may be either built in or not built in the kitchen counter.

  As shown in FIGS. 1 and 2, the gas stove 1 serves as a top surface portion of the gas stove 1 by closing at least the stove main body 10 formed of a box-shaped housing that opens upward, and the upper opening of the stove main body 10. An outer shell is constituted by the glass top plate 11.

  The top plate 11 is provided with a plurality of heating units including the stove burner 2. In the embodiment shown in FIG. 1, there are provided a total of three heating units each including a left-side high thermal power burner 2a, a center-side small thermal power burner 2b, and a right-side high thermal power burner 2c. is there. The stove burner 2 is projected on the top plate 11 through an opening formed in the top plate 11, and an annular burner ring R is interposed between the burner body 3 and the opening edge of the top plate 11. The soup is prevented from falling down from the top plate 11. Around the opening of the top plate 11, the virtues 12 are placed.

  As shown in FIG. 5, the virtues 12 are formed by integrally assembling a substantially annular virtuosity frame 12 a and a plurality of virtues claws 12 b. In the present embodiment, the five virtue frames 12a are formed by bending a metal round bar having a substantially circular cross section in an annular shape in plan view, and a plurality of five virtue claws 12b are arranged at substantially equal intervals in the circumferential direction of the five virtue frames 12a. (6 in this embodiment) are integrally formed by welding. The five virtue frames 12a may not be annular and a part of the circumferential direction may be missing.

  A grill cabinet provided with a grill burner is provided in the gas stove 1, and the front opening of the grill cabinet is closed openably and closably by a grill door 13 provided on the front surface of the gas stove 1.

  An operation unit 15 for operating each heating unit is provided on the front panel 14 constituting the front unit of the gas stove 1. For convenience, the direction in which the front panel 14 is provided is the front, and the left and right are the left and right when viewed from the front.

  Each operation unit 15 instructs to switch the ignition and extinguishing of the corresponding burner 2 and to adjust the heating power, and in response to this, the control unit (not shown) switches switching of the point fire extinguishing and heating power of the respective burner 2. While performing the adjustment, an automatic cooking mode such as a cooking timer mode, a water heating mode, and a rice cooking mode can be set for each stove burner 2.

  The control unit is composed of a microcomputer, and the thermoelectromotive force of the flame detection means 21 (see FIG. 3) composed of a thermocouple provided in each burner (the stove burner 2 and the grill burner) is input, and the control unit is input. Combustion is recognized when the thermoelectromotive force exceeds a predetermined value (for example, 3.5 mV).

  As shown in FIG. 3, a gas conduit 17 for supplying fuel to each burner 2 and the grill burner is branched from a gas supply path 16 for supplying a fuel gas such as city gas.

  Each gas conduit 17 is provided with an original electromagnetic valve 18 that is kept open by energization and closes when energization is stopped, and a flow rate control valve 19 that controls the amount of fuel passing through, and the flow rate control valve 19. A driving means (not shown) for driving is provided. As the driving means, a stepping motor capable of fine adjustment of the opening position is preferably used, but is not particularly limited. In addition, each gas conduit 17 is provided with a gas nozzle 17a by screwing or the like through a sealant at the tip.

  When the operation unit 15 is operated to send an ignition command to the control unit, the control unit that has received the command opens the original electromagnetic valve 18 of the gas conduit 17 corresponding to the commanded burner 2 or grill burner, and The flow control valve 19 is opened at a predetermined opening, and the ignition means 22 including an ignition plug is sparked to ignite the stove burner 2 or the grill burner. Thereby, the to-be-heated material mounted on the heating part by the flame of the stove burner 2 can be heated, or the meat and fish in the grill can be baked by the flame of the grill burner.

  The stove burner 2 will be described with reference to FIGS. The stove burner 2 has a main body constituted by a burner cap 4 detachably mounted on a burner body 3.

  In the present embodiment, the burner main body 3 is formed by drawing a SUS steel plate so as to have a substantially annular shape in a plan view in which the upper surface is surrounded by the outer cylinder 34 and the inner cylinder 35 that serve as the burner cap mounting portion 31 and the bottom portion therebetween. A mixing chamber 32 that opens upward (to be precise, a burner cap 4 is placed thereon to form a complete mixing chamber whose upper side is closed) is formed. It may be formed by casting or general casting. In the present embodiment, the vertical length of the inner cylinder 35 is shorter than the vertical length of the outer cylinder 34, and the upper end portion of the inner cylinder 35 is at a position lower than the upper end portion of the outer cylinder 34.

  The burner body 3 has a mixing tube 33 integrally. In the present embodiment, the burner body 3 is configured such that a tube body 33a protrudes from the outer cylinder 34. An inflow opening 33b (see FIG. 3) is formed at the tip (upstream end) of the pipe body 33a, and the gas nozzle 17a is inserted into the inflow opening 33b with an air supply gap through which primary air can be inserted.

  As shown in FIG. 4, the burner cap 4 has notches or openings 41 serving as flame holes on the outer peripheral surface thereof, and a plurality of flame hole grooves communicating radially with the notches or openings 41 are provided in the lower surface. By placing the burner cap 4 on the burner cap placement portion 31 at the upper end of the burner body 3, a flame hole surrounded by the burner cap placement portion 31 and the notch or opening 41 is formed. It has become. In order for the flame hole to become a predetermined flame hole as designed, the burner cap 4 needs to be properly placed on the burner cap placement portion 31 (that is, in a predetermined direction at a predetermined position). The positioning main projection 5, the positioning sub-projection 6 and the positioning insertion portion 7 are provided and will be described in detail later.

  In the present embodiment, the burner cap 4 has a through hole 40 formed in the center, and a cylindrical portion 42 projects downward from the periphery of the through hole 40 on the lower surface of the burner cap 4. When the burner cap 4 is properly placed on the burner cap placement portion 31, the lower end portion of the cylindrical portion 42 is in contact with or close to the upper end portion of the inner cylinder 35 of the burner body 3 as shown in FIG. 10. Thus, the cylindrical portion 42 and the inner cylinder 35 are substantially continuous, and a predetermined mixing chamber 32 is formed.

  In addition to supplying air around the flame hole as secondary air for combustion, the flame hole is also used for combustion even if it passes through the through hole 30 in the center of the burner body 3 and the through hole 40 from below the burner body 3. Secondary air is supplied.

  The stove burner 2 is provided with temperature detecting means 23 for detecting the temperature by contacting the bottom of a cooking pan as an object to be heated placed on the heating unit. Is exposed. A thermocouple, a thermistor, or the like is preferably used as the temperature detection means 23, but is not particularly limited. Further, as shown in FIG. 8, the stove burner 2 includes the flame detection means 21 and the ignition means 22 in a part in the circumferential direction.

  In the present invention, a positioning main projection 5 and a positioning sub-projection 6 are provided on the lower surface of the burner cap 4, and the positioning main projection 5 can be inserted into the burner cap mounting portion 31 of the stove burner 2. The inserted portion 7 is formed.

In the present embodiment, the positioning main projection 5 is formed on a part of the lower surface of the burner cap 4 in the circumferential direction, as shown in FIGS. 6 and 7, from the center O _{4 of the} through hole 40 of the burner cap 4 in plan view. The distance L ₅ to the end surface 51 is longer than the distance L ₃ from the center O _{3 of the} through hole 30 of the burner body ₃ to the inner surface of the outer cylinder 34 shown in FIGS. On the other hand, as shown in FIGS. 8 and 9, the burner cap placement portion 31 is located at a portion where the positioning main projection 5 is located when the burner cap 4 is properly placed, from the center O ₃ of the burner body 3. A positioning insertion portion 7 into which the outer end portion of the positioning main projection 5 can be inserted is cut away, and the distance L ₇ to the back surface is longer than the distance L ₅ .

  As shown in FIG. 8, the inner end of the positioning main projection 5 is located outside the inner cylinder 35 of the burner body 3 and is positioned in the mixing chamber 32.

As shown in FIG. 7, the height H ₅ from the lower end portion of the positioning main projection 5 to the upper end portion of the burner cap 4 is the burner cap placement portion 31 shown in FIG. 9 (in this embodiment, the burner cap placement portion). Since the portion 31 is inclined, it is formed to be higher than the height H ₃ from the lower end thereof) to the upper end of the virtues 12 placed on the top plate 11.

The positioning sub-projections 6 are provided along the surface of the burner cap placement portion 31 on the side of the mixing chamber 32 (the inner surface of the outer cylinder 34) when the burner cap 4 is properly placed. in 6 and 7, are provided at two positions in the circumferential direction on both sides around the position facing the positioning main projections 5 with respect to the center O ₄ in a plan view. The distance L ₆ from the center O ₄ of the burner cap 4 to the outer end face 61 of the positioning sub-projection 6 in plan view is larger than the distance L ₃ from the center O ₃ of the burner body ₃ to the inner surface of the outer cylinder 34. It is formed to be shorter. As shown in FIG. 8, the inner end of the positioning sub-projection 6 is located outside the inner cylinder 35 of the burner body 3 and is positioned in the mixing chamber 32.

Further, as shown in FIG. 7, the height H ₆ from the lower end portion of the positioning sub-projection 6 to the upper end portion of the burner cap 4 is similar to the height H ₅ of the positioning main projection 5 as shown in FIG. It is formed higher than the height H ₃ from the cap placing portion 31 to the upper end portion of the virtues 12.

  When the burner cap 4 is properly placed and mounted on the burner cap placement portion 31, the outer end of the positioning main projection 5 is inserted into the positioning insertion portion 7 as shown in FIG. The inner end is located in the mixing chamber 32, and the positioning sub-projection 6 is entirely accommodated in the mixing chamber 32 between the outer cylinder 34 and the inner cylinder 35. And the upper end part of the burner cap 4 is located below the upper end part of Gotoku 12 mounted on the top plate 11, and to-be-heated objects, such as a cooking pan, are mounted on Gotoku 12 without any trouble. The

  Hereinafter, a case where the burner cap 4 is not properly placed on the burner cap placement portion 31 will be described.

First, the burner cap 4 in place of the burner cap placement unit 31 (i.e. the center O ₃ and coincides the center O ₄ and the burner body 3 of the burner cap 4) Although, in the burner cap 4 If the orientation is not a predetermined orientation, the positioning main projection 5 is displaced from the positioning insertion portion 7. Therefore, when the burner cap 4 is lowered, the lower end portion of the positioning main projection 5 becomes the burner cap. It will be placed on the placement unit 31.

As described above, the height H ₅ of the positioning main projection 5 is higher than the height H ₃ from the burner cap placement portion 31 to the upper end of the virtues 12, and therefore the lower end of the positioning main projection 5. When the portion is placed on the burner cap placement portion 31, the upper end portion of the burner cap 4 is positioned above the upper end portion of the virtues 12 placed on the top plate 11. Then, even if it is going to place to-be-heated objects, such as a cooking pot, on Gotoku 12, it cannot contact | abut to the burner cap 4, and a user must not have the burner cap 4 mounted normally. Recognize

Then, the burner cap 4 is not in a predetermined position (and the center O ₃ of the center O ₄ and the burner body 3 of ie the burner cap 4 does not match) when described.

As shown in FIG. 11, when the positioning main projection 5 is biased inward from the normal case and enters the outer cylinder 34, any of the positioning sub-projections 6 is placed on the burner cap placement portion 31. Will be. As described above, since the height H ₆ of the positioning sub-projection 6 is also formed higher than the height H ₃ from the burner cap placement portion 31 to the upper end of the virtues 12, any of the positioning sub-projections 6 When the lower end portion of 6 is placed on the burner cap placement portion 31, the upper end portion of the burner cap 4 is positioned above the upper end portion of the virtues 12 placed on the top plate 11. The person recognizes that the burner cap 4 is not properly placed.

  Further, if the positioning main projection 5 is biased outward, the positioning main projection 5 itself is placed on the burner cap placement portion 31, and the upper end portion of the burner cap 4 is placed on the top plate 11. Therefore, the user recognizes that the burner cap 4 is not properly placed.

  As described above, when the burner cap 4 is not properly placed on the burner cap placement portion 31 and the positioning main projection 5 is not inserted into the positioning insertion portion 7, the positioning main projection 5 or the positioning main projection 5 is used. Since at least one of the sub-projections 6 contacts the upper surface of the burner cap placement portion 31, the user recognizes that the burner cap 4 is not properly placed.

  Thereby, when the burner cap 4 is not properly placed on the burner cap placement portion 31 of the burner body 3, the user can surely recognize that the burner cap 4 is not properly placed, Problems due to the burner cap 4 not being properly placed on the burner cap placement portion 31 of the burner body 3, for example, the burner cap 4 is lifted and becomes unstable, and a predetermined flame is not formed but a predetermined flame is formed. It is possible to prevent such things from being done.

In the embodiment described above, the positioning sub-projections 6 are provided at two locations along the surface of the burner cap placement portion 31 on the mixing chamber 32 side, but may be at one location, three locations, or more. Even in this case, when the burner cap 4 is not in a predetermined position (that is, the center O ₄ and the center O ₃ do not coincide), at least one of the positioning main projection 5 or the positioning sub-projection 6 is the burner cap placement portion 31. It is necessary to abut on the upper surface.

Here, in the case where the positioning sub-projections 6 are provided at two or more locations along the surface of the burner cap mounting portion 31 on the mixing chamber 32 side, the positioning sub-projections 6 are sandwiched by the center O _{4 in} plan view. It is not necessary to provide it at a position facing the positioning main projection 5. This increases the degree of freedom in design when providing the positioning sub-projections 6. In particular, when the positioning sub-projection 6 is provided, it is preferably provided at a location other than the location where the flame detection means 21 and the ignition means 22 are provided in the circumferential direction of the burner body 3 of the stove burner 2. Thereby, it can be avoided that the positioning sub-projections 6 prevent the flame detection means 21 and the ignition means 22 from reaching the flame and the fuel gas.

Further, when the positioning sub-projection 6 is provided at one location along the surface of the burner cap placement portion 31 on the side of the mixing chamber 32, the positioning sub-projection 6 is located at a position facing the positioning main projection 5 across the center O _{4 in} plan view. If the positioning sub-projection 6 is not provided, both the positioning main projection 5 and the positioning sub-projection 6 enter the mixing chamber 32 even though the burner cap 4 is not properly placed. There is a possibility that the upper surface of the cap mounting portion 31 does not come into contact. Then, the upper end portion of the burner cap 4 is positioned below the upper end portion of the virtues 12 placed on the top plate 11, and the user can safely place the heated object such as a cooking pan on the virtues 12. It is possible to place the burner cap 4 and it may fail to recognize that the burner cap 4 is not properly placed. For this reason, the positioning sub-projection 6 is provided at a position facing the positioning main projection 5 across the center O ₄ in plan view.

  Further, although not shown, an insertion portion into which the positioning sub-projection 6 is inserted may be formed at a position corresponding to the positioning sub-projection 6 of the burner cap mounting portion 31. In this case, the widths of the positioning main projection 5 and the positioning sub-projection 6 are made different, and the inserted portion 7 for positioning and the width of the inserted portion are matched to the positioning main projection 5 and the positioning sub-projection 6. Also, the positioning main projection 5 and the positioning sub-projection 6 can be prevented from being replaced and inserted.

DESCRIPTION OF SYMBOLS 1 Gas stove 10 Stove main body 11 Top plate 12 Gotoku 2 Stove burner 3 Burner main body 30 Through-hole 31 Burner cap mounting part 32 Mixing chamber 34 Outer cylinder 35 Inner cylinder 4 Burner cap 40 Through-hole 41 Notch or opening for flame holes 42 Cylinder Part 5 Positioning main protrusion 6 Positioning sub-projection 7 Positioning insertion part R Burner ring

Claims (3)

  A stove burner is provided so as to protrude upward through an opening formed in the top plate, and five virtues are placed on the top plate around the opening, and the cono burner has an annular shape in plan view. A burner cap having a notch or opening serving as a flame hole on the outer peripheral surface is placed on the burner cap placement portion of the burner body having a mixing chamber that opens upward in the burner cap placement portion. A positioning main projection and a positioning sub-projection project from the lower surface of the burner cap, and a positioning insertion portion into which the positioning main projection can be inserted is formed on the burner cap mounting portion of the stove burner. When the positioning main projection is inserted into the positioning insertion portion, the positioning sub-projection is accommodated in the mixing chamber, and the burner cap is When the positioning main projection is not inserted into the positioning insertion portion, at least one of the positioning main projection or the positioning sub-projection contacts the upper surface of the burner cap mounting portion. The gas stove is characterized in that the positioning main projection and the positioning sub-projection are formed so that the burner cap is positioned above the upper end of the virtues.   The positioning sub-projections are respectively provided at a plurality of locations along the surface of the mixing chamber side of the burner cap mounting portion in plan view when the positioning main projection is inserted into the positioning insertion portion. The gas stove according to claim 1, wherein:   Flame detection means and / or ignition means are provided in a part of the circumferential direction of the burner body, and the positioning sub-projections are provided at a place other than the place where the flame detection means and the ignition means are provided. The gas stove according to claim 1 or 2.

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