JP2017067363A - Gas cooking stove - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas cooking stove configured to properly suck primary air by preventing relative positions of a mixing pipe and a gas nozzle from which a fuel gas is injected and supplied to the mixing pipe, from being deviated.SOLUTION: The gas cooking stove comprises within a cooking stove body: a cooking stove burner B with which a mixing chamber 11 is formed at a lower side of a portion where a flame hole of a burner body 1 consisting of a Bunsen burner is formed and to which a mixing pipe 12 for sucking primary air is communicated and connected so as to protrude laterally from the mixing chamber 11; a gas nozzle 30 from which a fuel gas is injected and supplied to the mixing pipe 12; and a nozzle support 3 which supports the gas nozzle 30 and supplies the fuel gas. The nozzle support 3 and the mixing pipe 12 are fixed.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a gas stove in which a Bunsen burner is used as a stove burner.

  In many conventional gas stoves, a Bunsen burner is used as a stove burner, and the stove burner has a flat portion that is connected substantially horizontally from the mixing chamber or mixing tube, and the flat portion on the side where the mixing tube is not projected is It is attached via a mounting bracket fixed to the stove body. The mounting bracket is provided with a guide standing upward, and the guide is inserted into a hole penetrating vertically formed in the flat portion of the stove burner. The tip of the mixing tube is not fixed by a member such as the mounting bracket described above, but is only supported by a flow rate adjusting unit provided at the tip of the gas supply tube (see, for example, Patent Document 1). .

  Therefore, if external force acts on the burner body and burner cap exposed on the top plate and rotational force is applied to the mixing pipe around the mounting bracket, the flow rate adjustment section and gas supply pipe are moved vertically. There is a possibility that the power of the.

Japanese Patent Laid-Open No. 8-14569 (Page 2, FIGS. 3 to 5)

  When the external force acts on the burner body and the burner cap exposed on the top plate and the mixing tube rotates when the mixing tube is rotated by the rotational force around the mounting bracket, the mixing tube and the mixing tube In contrast, it is conceivable that the relative position with respect to the gas nozzle that jets and supplies the fuel gas is shifted.

  When the relative position between the mixing pipe and the gas nozzle that jets and supplies the fuel gas to the mixing pipe is shifted, the primary air sucked into the mixing pipe by the ejector effect caused by the fuel gas jetting from the nozzle. As a result, there was a possibility that the primary air could not be properly sucked.

  The present invention was invented in view of the above-mentioned conventional problems, and the object of the present invention is to shift the relative position between the mixing tube and the gas nozzle that jets and supplies the fuel gas to the mixing tube. It is in the point of providing a gas stove configured to suppress generation and appropriately perform primary air suction.

  In order to solve the above-mentioned problems, the invention according to claim 1 is characterized in that a mixing chamber is formed below a portion of a burner body made of a Bunsen burner where a flame hole is formed and protrudes laterally from the mixing chamber. A combustor connected to a mixing pipe through which primary air is sucked, a gas nozzle that jets and supplies fuel gas to the mixing pipe, and a nozzle support that supports the gas nozzle and supplies fuel gas In a stove body, wherein the nozzle support and the mixing tube are fixed.

  Thereby, it is possible to suppress the displacement of the relative position between the mixing pipe and the gas nozzle that jets and supplies the fuel gas to the mixing pipe, and the primary air can be sucked appropriately.

  The invention according to claim 2 is characterized in that, in the invention according to claim 1, the nozzle support is made of a tube material, and the tube material is fixed to the mixing tube.

  Thereby, a gas stove can be easily comprised only by comprising a nozzle support body with a pipe material, and fixing this pipe material to a mixing pipe, and simplification of a structure is attained.

  The invention according to claim 3 is characterized in that, in the invention according to claim 1, the nozzle support is made of aluminum die cast, and the mixing tube is fixed to the aluminum die cast support. .

As a result, the nozzle support and the mixing tube can be more firmly fixed, and the primary air can be sucked more appropriately.

  According to the present invention, it is possible to prevent the relative position between the combined pipe and the gas nozzle that jets and supplies the fuel gas to the mixing pipe from being generated, and the primary air can be sucked appropriately.

It is the whole gas stove of one embodiment of the present invention. It is the perspective view except the top plate of the gas stove (1st position model) 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 the principal part perspective view which looked at the state before attaching a stove burner to a stove main body from the upper diagonal back in the same as the above. It is the principal part perspective view which looked at the state after attaching a stove burner to a stove body in the same as the above from diagonally upward. It is the principal part perspective view which looked at the state after attaching a stove burner to a stove body in the same as the above from diagonally forward. A burner fixture is shown, (a) is a top view, (b) is a front view, (c) is a rear view. It is the perspective view except the top plate of the gas stove of a 2nd position model, and the right-hand side stove burner.

  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 FIG. 1 and FIG. 2, the gas stove is made of a glass that becomes a top surface portion of the gas stove by closing the upper opening of the stove main body 2 and at least the stove body 2 that is a box-shaped housing that opens upward. And the top plate 20 constitute an outer shell.

  The top plate 20 is provided with a plurality of heating units equipped with a burner B. In the embodiment shown in FIG. 1, there are provided a total of three heating units each provided with a left-side high thermal power burner B1, a small rear thermal power burner B2 at the center, and a right-side high thermal power burner B3. is there. The combo burner B will be described later.

  A grill cabinet provided with a grill burner is provided in the gas stove, and the front opening of the grill cabinet is closed openably and closably by a grill door 21 provided in front of the gas stove.

  The front panel 22 constituting the front portion of the gas stove is provided with an operation unit 23 for operating each heating unit. For convenience, the direction in which the front panel 22 is provided is the front, and the left and right are the left and right when viewed from the front.

  Each operation unit 23 instructs to switch the ignition and extinguishing of the corresponding burner B and to adjust the thermal power, and in response to this, the control unit performs switching of the point fire extinguishing and the thermal power adjustment of each combo burner B, An automatic cooking mode such as a cooking timer mode, a water heater mode, and a rice cooking mode can be set for each cooker B.

  The control unit receives an electromotive force of a thermocouple 43 (see FIG. 3) as combustion detection means provided in each burner (combustor B, grill burner), and the control unit receives the input electromotive force at a predetermined value (for example, When it reaches 3.5 mV) or higher, combustion is recognized.

  As shown in FIG. 3, a nozzle support (gas conduit) 3 for supplying fuel to each burner B and grill burner is branched from a gas supply path 4 for supplying a fuel gas such as city gas.

  Each nozzle support 3 is provided with an original electromagnetic valve 41 that is kept open by energization and closes when energization is stopped, and a flow rate control valve 42 that controls the amount of fuel passing therethrough, and the flow rate control valve Driving means for driving 42 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. Further, each nozzle support (gas conduit) 3 is provided with a gas nozzle 30 at its tip by screwing or the like via a sealing material.

  When the operation unit 23 is operated and an ignition command is sent to the control unit, the control unit that has received the command opens the original electromagnetic valve 41 of the nozzle support (gas conduit) 3, and is connected to any stove burner B or grill burner. The corresponding flow control valve 42 is opened at a predetermined opening and the spark plug 45 is sparked to ignite the burner B or the grill burner. Thereby, the to-be-heated material mounted on the heating part can be heated by the flame of the stove burner B, and the meat and fish in the grill can be baked by the flame of the grill burner.

  The stove burner B will be described with reference to FIGS. The main body of the stove burner B is configured by detachably mounting a burner cap 10 on a substantially annular mixing chamber 11 formed in the burner body 1. In the present embodiment, the burner body 1 is a space in which a SUS steel plate is drawn and is surrounded by an outer cylinder, an inner cylinder, and a bottom portion between them, and has a substantially annular shape in plan view (a burner cap 10 placed thereon). However, the burner body 1 may be formed by aluminum die casting or general casting.

  As shown in FIG. 4, the burner cap 10 has a plurality of flame hole grooves 10 a radially formed on the lower surface thereof, and the burner cap 10 is placed on the burner cap placement portion at the upper end of the burner body 1. Thereby, the flame hole 13 (refer FIG. 2 etc.) enclosed by the upper end surface of the burner main body 1 and the groove | channel 10a for flame holes is formed. The flame hole 13 is supplied with air around the flame hole 13 as combustion secondary air, and is also supplied with combustion secondary air through the central through hole of the burner body 1. It has become.

  The stove burner B is exposed on the top plate 20 through an opening formed in the top plate 20, and an annular burner ring R (see FIG. 5) between the burner body 1 and the opening edge of the top plate 20. 1), and the soup is prevented from falling down from the top plate 20. The stove burner B includes a temperature sensor 46 that detects the temperature by contacting the bottom of a cooking pan serving as an object to be heated that is placed on the heating unit, and extends upward from the central through hole of the burner body 1. Exposed.

  The burner body 1 has a mixing tube 12 integrally. In the present embodiment, the tube main body 12a protrudes from the outer cylinder forming the mixing chamber 11, and a flat piece having a substantially horizontal plate shape from the side surface of the mixing chamber 11 and both side surfaces over the substantially entire length in the longitudinal direction of the tube main body 12a. 16 is further provided, and a flat member 50 having a substantially horizontal plate shape made of another member is fixed from the flat piece 16 to the distal end side of the tube body 12a and fixed integrally by caulking or welding. The flat piece 16 and the flat member 50 constitute a substantially continuous flat portion 5. Instead of the flat piece 16 and the flat member 50 different from the flat piece 16 being fixed by caulking or welding as in the present embodiment, the flat portion 5 is formed as a single member. May be formed.

  An inflow opening 12b (see FIG. 5) is formed at the distal end (upstream end) of the pipe body 12a, and a gas nozzle 30 is formed with an air supply gap 12c (see FIG. 6) through which primary air can be inserted into the inflow opening 12b. Is inserted. The flat member 50 is located on the distal end side with respect to the pipe body 12a, but the nozzle support (gas conduit) 3 can be immersed in the upstream side of the pipe body 12a from a position corresponding to the inflow opening 12b. A recess 51 for immersing the gas conduit having a diameter substantially the same as or slightly larger than the diameter of the nozzle support (gas conduit) 3 is formed. The nozzle support immersion groove 51 is formed with a long hole-like opening 52 in the circumferential direction in a part of the longitudinal direction (longitudinal direction of the nozzle support 3 to be immersed). The immersion groove 51 and the slot-like opening 52 constitute a nozzle support fixing portion. Further, as shown in FIGS. 2 and 5, a positioning protrusion 31 that is inserted into the elongated hole-like opening 52 is formed in a part of the circumferential direction in the flow direction of the nozzle support (gas conduit) 3. Yes.

  As shown in FIGS. 5 and 6, the stove body 2 has a burner fixture 6 that supports and fixes the mixing tube 12 of the burner body 1 and a burner receiver that supports and fixes the mixing chamber 11 of the burner body 1. A crosspiece 7 is provided.

  As shown in FIG. 8, the burner fixture 6 includes a fixture main body 60, an upward restriction portion 61 provided on the fixture main body 60 for restricting the upward movement of the mixing tube 12, and the mixing tube 12. And a downward restricting portion 62 that restricts downward movement. The fixing tool main body 60 is fixed to the stove main body 2 by caulking, welding, screwing, or the like, and in this embodiment, is laid on the opposing inner side surfaces of the casing forming the stove main body 2. The upper direction restricting part 61 and the lower direction restricting part 62 are provided in two places separated in the injection direction of the gas nozzle 30 in the stove body 2, and the upper direction restricting part 61 is upstream of the two injection directions. The downward regulating part 62 is provided at a location downstream of the two injection directions. In the present embodiment, a standing piece 63 protrudes upward from the fixture main body 60, and a contact piece 64 is continuously provided laterally from the standing piece 63, and a lower surface of the contact piece 64 is directed upward. It becomes the regulation part 61. Further, a standing piece 65 protrudes upward from the fixture main body 60, and the upper surface of the standing piece 65 serves as the downward regulating portion 62. The upper direction restricting portion 61 and the lower direction restricting portion 62 are respectively in contact with two locations separated in the projecting direction of the mixing tube 12 from the mixing chamber 11, and in the present embodiment, the tip of the projecting direction among the two locations. An upper contact portion (hereinafter, referred to as an upper contact portion 14), which is the upper surface 14 of the side portion, contacts the upper direction restricting portion 61, and the lower surface 15 of the projecting direction proximal end portion of the two locations. The lower contact portion (hereinafter referred to as the lower contact portion 15) is in contact with the lower restriction portion 62. Further, as shown in FIGS. 4 to 6, a notch 53 is formed in a corner portion on the side of the upper contact portion 14 of the flat portion 5 (the flat member 50 in the present embodiment).

  The burner receiving bar 7 is fixed to the stove main body 2 by caulking, welding, screwing, or the like, and in this embodiment is erected on the opposing inner side surfaces of the casing forming the stove main body 2. Then, the mixing chamber 11 is supported and fixed to the burner receiving bar 7, and the fixing is performed on both sides of the mixing chamber 11 of the flat piece 16 continuously provided from the side surface of the mixing chamber 11, as shown in FIG. The screw members 18 are respectively inserted into the two screw insertion holes 17 formed at predetermined positions and are screwed into the screw holes 71 (see FIG. 5) formed in the burner receiving bar 7. At this time, the mounting bracket 81 to which the spark plug 45 and the temperature sensor 46 are attached is sandwiched and fixed between the burner receiving bar 7 and the flat piece 16. Further, the mounting bracket 82 to which the thermocouple 43 is attached is fixed to the flat piece 16 by caulking, welding or the like.

  In the present embodiment, the burner fixing tool 6 is configured to fix two of the three stove burners B on both sides (high-fired power burner B1, B3). An upper direction restricting portion 61 and a lower direction restricting portion 62 corresponding to each of the combustor B are provided. The two stove burners B are provided at either the first pitch (300 mm of the center distance of the mixing tube 12) or the second pitch (350 mm of the center distance of the mixing tube 12). In the burner fixture 6, the upper direction restricting portion 61 and the lower direction restricting portion 62 are provided at the first pitch and the second pitch. For convenience, a model in which the two burner burners B are provided at the first pitch is referred to as a first position model, and a model provided at the second pitch is referred to as a second position model. As illustrated in FIG. The upper direction restricting portion 61a and the lower direction restricting portion 62a for the position model are provided at the first pitch, and the upper direction restricting portion 61b and the lower direction restricting portion 62b for the second position model are provided at the second pitch, respectively. Further, as shown in FIG. 4, the upper contact portion 14a and the lower contact portion 15a for the first position model, the upper contact portion 14b and the lower contact portion for the second position model (not shown). Each) is provided.

  Hereinafter, attachment of the stove burner B to the stove body 2 in the first position model will be described with reference to FIGS. Prior to attaching the stove burner B, the burner fixture 6, the burner receiving bar 7, and the nozzle support (gas conduit) 3 are attached to the stove body 2 at predetermined positions.

  Then, in order to incorporate and fix the stove burner B, first, as shown in FIG. 5, the tip of the mixing tube 12 (in this embodiment, the end on the upper contact portion 14a side of the flat member 50) is on the lower side. The tip of the mixing pipe 12 is inserted below the nozzle support (gas conduit) 3 from the downstream side in the ejection direction of the gas nozzle 30 toward the upstream side. Then, the tip of the mixing tube 12 is positioned below the contact piece 64, the edge of the notch 53 is brought into contact with the contact piece 64, and this portion is rotated as the central axis, so that FIGS. As shown in FIG. 4, the nozzle support (gas conduit) 3 is inserted into the nozzle support (gas conduit) immersion groove 51 and the positioning protrusion 31 is inserted into the elongated hole 52 to contact the upper direction. The portion 14a is brought into contact with the upper restricting portion 61a, and the lower contact portion 15a is brought into contact with the lower restricting portion 62a. In this state, the upward movement and the downward movement of the mixing tube 12 are restricted. Since the nozzle support (gas conduit) 3 is immersed in the recessed groove 51 for immersing the nozzle support (gas conduit), the relative movement in the left-right direction with respect to the flat portion 5 of the nozzle support (gas conduit) 3 is restricted. Then, since the positioning protrusion 31 is fitted into the elongated hole-like opening 52, the relative movement in the front-rear direction of the nozzle support (gas conduit) 3 with respect to the flat portion 5 is restricted.

  In addition, as shown in FIG. 6, the nozzle support body (gas conduit) 3 whose relative movement with respect to the flat portion 5 is regulated has a locking piece 20 formed at the tip of the fixed band T10. After being inserted into the locking hole T5 provided in the flat plate 5, the flat portion 5 is firmly fixed by the fixing band T10 by screwing the fixing screw T18, and the relative position between the gas nozzle 30 and the mixing tube 12 is fixed. Deviation is suppressed. In this state, since the positioning protrusion 31 is fitted into the elongated hole-shaped opening T52 provided in the fixed band, the displacement of the relative position between the gas nozzle 30 and the mixing tube 12 is firmly suppressed.

  In addition, as shown in FIG. 8, if it is between the upper direction control part 61a for 1st position models and the upper direction control part 61b for 2nd position models, the burner main body 1 will be left-right direction. Can be moved to.

  Then, the screw member 18 is inserted into the screw insertion hole 17 and screwed into the screw hole 71 formed in the burner receiving bar 7, and the flat portion 5 is fixed to the burner receiving bar 7. In addition, the nozzle support (gas conduit) 3 is fixed to the flat portion 5 by a fixing band (not shown) such as a strip-shaped metal plate or a metal wire, so that the upward relative movement with respect to the flat portion 5 is restricted. Is done. Further, the gas nozzle 30 is inserted into the inflow opening 12b of the mixing tube 12 with an air supply gap 12c.

Hereinafter, a case where a force acts on the burner body 1 exposed on the top plate 20 will be described.
(1) When left and right force is applied to the burner body 1 exposed on the top plate 20, the left and right sides of the mixing chamber 11 of the flat portion 5 of the burner body 1 are fixed by the screw members 18. The burner body 1 does not move and maintains its position.
(2) When a force in the front-rear direction is applied to the burner body 1 exposed on the top plate 20, the top plate 20 is centered on two places fixed by the screw members 18 of the flat portion 5 of the burner body 1. Although the moment which tries to rotate the exposed burner body 1 forward or backward is generated, even if the moment to rotate forward is generated, the flat portion 5 of the burner body 1 is caused by the upward restricting portion 61. Since the upward movement of the burner is restricted, the burner body 1 does not move and the position thereof is maintained, and even if a moment to rotate backward is generated, the burner body 1 is flattened by the downward restricting portion 62. Since the downward movement of the portion 5 is restricted, the burner body 1 does not move and its position is maintained.
(3) When turning power in a plan view acts on the burner main body 1 exposed on the top plate 20, two portions on the left and right sides of the mixing chamber 11 of the flat portion 5 of the burner main body 1 are fixed by the screw members 18. Therefore, the burner body 1 does not move and its position is maintained.

  In this embodiment, as shown in FIGS. 6 and 7, the upper restricting portion 61 a exists only on the upper side of the upper contact portion 14 a and the upper portion of the nozzle support (gas conduit) 3 is missing. Since the nozzle support (gas conduit) 3 and the upward restricting portion 61 do not interfere with each other, the nozzle support (gas conduit) 3 and the upward restricting portion 61 (that is, the burner fixture 6) are configured. When it is attached to the stove body 2, it does not get in the way.

  Also in the case of the second position model shown in FIG. 9, instead of the upper contact part 14a, the lower contact part 15a, the upper restricting part 61a, and the lower restricting part 62a for the first position model, respectively. By using the upper contact portion 14b, the lower contact portion 15b, the upper restricting portion 61b, and the lower restricting portion 62b for the second position model, it can be attached in the same manner as the first position model.

  In the present embodiment, the pitch of the mixing tube 12 is 300 mm for the first position model and 350 mm for the second position model, but the numerical value is not particularly limited. There may be two or more types of pitches. In this way, the upper restriction portion 61 and the lower restriction portion 62 used for each pitch are formed in the burner fixture 6 for the entire pitch so that the mixing tubes 12 can be provided at a plurality of different pitches. Thus, if one kind of burner fixture 6 is manufactured, it is possible to deal with all pitches, and a mold for manufacturing the burner fixture 6 can be shared, so that the cost can be reduced.

  In the present embodiment, the nozzle support 3 is made of a pipe material, and the nozzle support 3 made of this pipe material is configured to be fixed to the mixing pipe 12, but the nozzle support 3 is formed by aluminum die casting, You may comprise so that the mixing pipe | tube 12 may be fixed to this aluminum die-cast nozzle support body 3 using a screw | thread etc. FIG.

In the present embodiment, the left and right high thermal power burners B1 and B3 have the gas fuel upstream side on the back and the downstream side forward, and the central small thermal power burner B2 has the gas fuel upstream side on the front and downstream side on the back. However, the direction is not particularly limited and may be arranged obliquely.
With this configuration, the nozzle support (gas conduit) 3 can be easily inserted from the lateral direction into the inflow opening 12b at the tip of the mixing tube 12, and the mixing tube 12 can be restricted from moving up and down. Thereby, the burner body 1 can be easily attached to the stove body 2, and the burner body 1 can be firmly fixed to the stove body 2, and the burner cap of the burner body 1 exposed on the top plate 20 is mounted. Even when various forces are applied to the mounting portion and the burner cap 10 from the outside, there is no inconvenience such as the burner body 1 being displaced from the stove body 2.

DESCRIPTION OF SYMBOLS 1 Burner main body 10 Burner cap 11 Mixing chamber 12 Mixing pipe 12a Pipe main body 12b Inflow opening 13 Flame hole 14 Upward contact part 15 Downward contact part 16 Flat piece 2 Stove body 3 Nozzle support body (gas conduit)
30 Gas nozzle 31 Locating protrusion 43 Thermocouple 45 Spark plug 46 Temperature sensor 5 Flat portion 50 Flat member 6 Burner fixture 60 Fixture body 61 Upper direction restricting portion 62 Lower direction restricting portion 7 Burner receiving bar B Conburner T5 Locking Hole T10 Fixing band T18 Fixing screw T20 Locking piece T52 Slotted opening provided in the fixing band

Claims (3)

  A mixing chamber is formed below a portion of the burner body made of Bunsen burner where a flame hole is formed, and a mixing tube through which primary air is sucked is communicated and connected so as to protrude laterally from the mixing chamber. A gas stove comprising a stove burner, a gas nozzle for injecting and supplying fuel gas to the mixing pipe, and a nozzle support for supporting the gas nozzle and supplying fuel gas in a stove body, the nozzle support And a gas stove, wherein the mixing tube is fixed.   The gas stove according to claim 1, wherein the nozzle support is made of a tube material, and the tube material is fixed to the mixing tube.   The gas stove according to claim 1, wherein the nozzle support is made of aluminum die cast, and the mixing tube is fixed to the aluminum die cast support.