JP2019215144A - Stove - Google Patents

Abstract

To provide a stove which can supply a fuel to a stove burner without causing troubles even if a stove burner used in a large stove is diverted into a use in a stove having a small housing.SOLUTION: A fuel passage device 110 includes a branch passage part 60, fuel adjustment parts 70, 70, and supply parts 100, 100. The fuel passage device 110 includes a fuel passage 111 at the inner side. The branch passage part 60 branches a fuel gas flowing thereinto from a rear part through a fuel pipe 50 into left and right stove burners. Each fuel adjustment part 70 includes a valve body 72 and an operation shaft 73 and adjusts an amount of the fuel gas flowing toward the stove burner. Each supply part 100 includes a supply passage part 80 and a nozzle part 90. The supply passage part 80 guides the fuel gas flowing thereinto from the fuel adjustment part 70 to the nozzle part 90. The nozzle part 90 jets the fuel gas flowing thereinto from the supply passage part 80 from a nozzle 93 toward an inflow port of an upstream end part of a throat part.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a stove.

  Conventionally, a stove provided with a burner is known. The stove disclosed in Patent Literature 1 includes a burner having a burner main body in which a mixing pipe section called a throat is connected to a lower portion, and a burner head mounted on an upper portion of the burner main body. The mixing pipe section needs to have a predetermined length in order to mix gas and air and to send the mixed gas mixture to the burner body. Further, the burner has a predetermined height in the vertical direction because a burner port is formed between the burner main body and the burner head by mounting the burner head on the upper portion of the burner main body.

JP 2017-44370 A

  When a designer newly designs a stove, the burner used in another model may be designed to be used interchangeably, for example, to reduce the manufacturing cost of the stove. There is a demand for miniaturized stoves without grills for single persons. For example, when a burner used for a relatively large stove such as a stove with a grill is diverted to a small stove, the upstream end of the throat of the burner is placed close to the front wall of the cabinet inside the small stove. There is a need to. Further, as the size of the housing is smaller, the space for arranging the fuel supply device and the fuel pipe for supplying fuel to the burner is limited inside the housing, so that the fuel supply to the burner is designed in the same manner as a large stove. There is a problem that cannot be designed.

  The present invention has been made in order to solve such a problem, and even if a stove burner used in a large stove is converted to a stove having a small casing, the stove burner does not cause any trouble. It is intended to provide a stove that can supply fuel to the stove.

  A stove according to claim 1 of the present invention includes a housing having an open top, and two stove burners disposed inside the housing, wherein the stove burner has a flow path through which fuel gas and air flow. A tubular throat portion having an inlet at an upstream end portion and extending a predetermined length to mix fuel gas and air, and a burner body to which a downstream end portion of the throat portion is connected at a lower portion; The stove burner is arranged side by side in the left-right direction with the upstream end of the throat portion facing the front and the downstream end facing the rear, and two stoves are provided from outside the housing. A stove provided with a fuel flow path device constituting a flow path of a fuel gas supplied to each of the burners inside the housing, wherein the fuel flow path device is disposed between two of the stove burners. Fuel gas flowing from the rear A branch flow path branching toward each of the stove burners; a fuel adjustment section connected to the branch flow path section for adjusting a flow rate of fuel gas flowing from the branch flow path section; and the fuel adjustment section. And a supply unit for supplying fuel gas flowing from the fuel adjustment unit to the stove burner, wherein the fuel adjustment unit is disposed between the branch flow path unit and the stove burner, and is internally provided. A gas flow path is provided, and a tubular main body extending in the front-back direction is connected to the branch flow path at a rear portion of the main body, and fuel gas flows into the main body from the branch flow path. A gas inlet and a front portion of the main body are provided on a side opposite to the gas inlet with respect to an axis extending in an axial direction of the main body, and allow fuel gas to flow into the supply section from inside the main body. Gas outlet and front end An operation shaft rotatably supported by the main body in a state protruding forward from a front end of the body, and being operated to rotate to adjust a flow rate of fuel gas, wherein the supply unit includes the fuel adjustment unit. A first flow path for guiding the fuel gas flowing from the section forward, a supply flow path section including a second flow path extending in the left-right direction from the front end of the first flow path toward the stove burner, and the supply flow path And a nozzle portion having a nozzle connected to the supply passage portion and ejecting the fuel gas flowing in from the supply flow passage portion rearward toward the inflow port of the stove burner.

  The stove according to claim 2, in addition to the configuration according to claim 1, wherein the nozzle unit is configured to store the fuel gas flowing from the supply flow path unit while guiding the fuel gas forward, A guide path that is connected to the front end and guides the fuel gas stored in the storage chamber in a direction away from the supply flow path section, and a connection path that connects the guide path and the nozzle and extends in the front-rear direction. It is characterized by having.

  In the stove according to claim 3, in addition to the configuration according to claim 1 or 2, the supply unit includes an opening that connects to a valve chamber in which a valve element is disposed to be able to move back and forth, at a rear end of the first flow path. It is characterized in that it is provided in a part.

  The stove according to claim 4, in addition to the configuration according to any one of claims 1 to 3, wherein the fuel flow path device includes the branch flow path unit, the fuel adjustment unit, and the supply unit. It is characterized in that it is arranged inside the housing in a state of being assembled in advance.

  In the stove according to claim 5, in addition to the configuration according to any one of claims 1 to 4, the fuel adjustment unit may be configured such that the gas inlet and the gas outlet are on the left and right sides with respect to the axis. It is characterized by being arranged separately from each other.

  Since the fuel passage device provided in the stove according to the first aspect includes the branch passage portion between the two stove burners, the fuel gas can be branched into the two stove burners without increasing the thickness of the housing. The fuel adjustment section is generally provided in front of the stove burner. However, the stove according to claim 1 has the fuel adjustment section disposed between the branch flow path section and the stove burner. The length in the front-rear direction can be reduced. The supply flow path of the supply section guides the fuel gas flowing from the fuel adjustment section forward and then flows the fuel gas in the left-right direction toward the stove burner. The nozzle part jets the fuel gas flowing from the supply flow path part rearward toward the inflow port of the throat. Thereby, even if the upstream end of the throat of the stove is located close to the front wall of the housing, the fuel gas is supplied to the inlet. The fuel flow path device arranges the branch flow path section, the fuel adjustment section, and the supply section in the left-right direction between the two stove burners, thereby increasing the fuel gas flow without increasing the vertical height of the fuel flow path apparatus. Can be supplied to the stove. Therefore, the stove according to claim 1 can supply fuel to the stove burner without hindrance even if a stove burner used for a large stove is diverted to a stove having a small casing.

  The stove according to claim 2 has the effect of the invention according to claim 1 and, in addition, in order to cause the fuel gas and air to flow into the inlet of the throat, the fuel gas is spouted from the nozzle toward the inlet. In addition, the surrounding air needs to be drawn into the fuel gas flowing into the inlet. When the upstream end of the throat of the stove is located close to the front wall of the housing, the fuel gas is supplied from the front to the nozzle because the nozzle is arranged in front of the inflow port to eject the fuel gas. There is a need. On the other hand, the length of the supply flow path in the front-rear direction is limited due to manufacturing reasons and the like, and the supply flow path may not be able to guide the fuel gas to a position in front of the nozzle. The stove according to claim 2 guides the fuel gas further forward than the supply flow path by the storage chamber and the guide path of the nozzle section, and can supply the fuel gas to the nozzle from the front via the connection path. .

  The supply part can arrange | position a valve part which has a valve body at the back part. Thus, the stove according to claim 3 has, in addition to the effects of the invention described in claim 1 or 2, the valve section does not interfere with the throat section or the like of the stove burner, and the branch passage section and the stove burner can be connected. It can be placed in between.

  According to the stove according to claim 4, in addition to the effect of the invention according to any one of claims 1 to 3, it is possible to improve workability when the fuel flow path device is mounted inside the housing.

  In some cases, the fuel adjustment unit used in a large stove is converted to a stove having a small casing. Generally, the fuel adjusting section is disposed inside the housing with the gas inlet on the lower side and the gas outlet on the upper side. However, since the fuel adjustment unit having such an arrangement has a predetermined height in the vertical direction, there is a limit in reducing the height of the housing. According to the stove according to claim 5, in addition to the effect of the invention according to any one of claims 1 to 4, the height of the fuel adjustment section is reduced because the gas inlet and the gas outlet are arranged separately in the left-right direction. Thus, a thin housing can be employed.

It is a perspective view of the stove 1. It is a perspective view of the stove 1 from which the top plate 3 was omitted. It is a top view of the stove 1 from which the top plate 3 and the stove burner 4 on the left side were omitted. FIG. 2 is a plan view of a fuel flow channel device 110. FIG. 3 is a perspective view of a branch flow path unit 60 and a fuel adjustment unit 70. FIG. 6 is a cross-sectional view taken along line II of FIG. 5. FIG. 6 is a sectional view taken along line II-II shown in FIG. 5. FIG. 3 is a perspective view of a supply channel unit 80 and a nozzle unit 90. FIG. 3 is a plan view of the supply unit 100. FIG. 10 is a right side sectional view taken along the line III-III shown in FIG. 9. FIG. 10 is a left side sectional view taken along line III-III shown in FIG. 9. FIG. 5 is a right side view of the nozzle unit 90.

  Embodiments of the present invention will be described below. The structure of the device described below is not limited to the description but is merely an illustrative example unless otherwise specified. The drawings are used to explain technical features that can be adopted by the present invention. In the following description, left and right, front and rear, and up and down indicated by arrows in the figure will be used. Note that the stove 1 shown in FIG. 1 is a table stove that is not provided with a grill and is configured to be small and thin for single persons or the like, but may be a built-in stove or the like.

  The stove 1 will be described with reference to FIGS. As shown in FIG. 1, the stove 1 includes a housing 2 and a top plate 3. The housing 2 is formed in a thin, substantially rectangular parallelepiped shape having a right wall portion 21, a left wall portion 22, a front wall portion 23, a rear wall portion 24, and a bottom surface portion 25. The top plate 3 is disposed on the top of the housing 2 so as to cover an opening 26 surrounded by the right wall portion 21, the left wall portion 22, the front wall portion 23, and the rear wall portion 24 of the housing 2. . The top plate 3 has an opening (not shown) through which the two stove burners 4 and 4 are inserted. When the top plate 3 is installed in the opening 26 of the housing 2, the upper portions of the two stove burners 4, 4 pass through the openings, and are lined up in the left-right direction substantially at the center of the top plate 3 in the front-rear direction.

  The stove burner 4 mainly includes a burner main body 40, a burner head 42 (see FIG. 1), and a throat portion 46. The burner main body 40 forms a main body of the stove burner 4. The burner head 42 is mounted on the upper part of the burner main body 40. The throat portion 46 is a hollow tubular portion having a predetermined length in the front-rear direction. The throat portion 46 extends in the front-rear direction while inclining upward from an upstream end 46A, which is a front end, to a downstream end 46B, which is a rear end. The downstream end 46B is connected to a lower portion of the burner main body 40. That is, inside the opening 26, two stove burners 4, 4 are arranged side by side in the left-right direction with the respective throat portions 46 extending in the front-rear direction. At an approximate center of the upstream end 46A, an inlet (not shown) through which fuel gas and air flow is provided. The throat section 46 mixes the fuel gas and the primary air flowing from the inflow port, and converts the air-fuel mixture of the fuel gas and the air from the upstream end 46A, which is the upstream end of the air-fuel mixture, to the downstream side of the air-fuel mixture. It is passed toward the downstream end 46B which is the end. The air-fuel mixture that has flowed into the burner main body 40 from the downstream end portion 46 </ b> B is blown out from a plurality of flame openings formed between the burner main body 40 and the burner head 42. An axial ignition electrode 44 for igniting by discharge and an axial thermocouple 45 for detecting the presence or absence of a flame are provided in the vicinity of the flame outlet behind the burner head 42. In the center of the burner head 42, a pot sensor 43 for storing a thermistor inside and detecting the temperature of the object to be heated such as the pot bottom temperature is provided so as to pass through the center of the burner head 42 and the center of the burner main body 40. ing.

  At the substantially center of the front surface of the housing 2, two operation knobs 11, 11 each having a circular shape in a front view are provided side by side in the left-right direction. Each of the operation knobs 11 and 11 is operated to perform ignition, fire extinguishing, and heating power adjustment of each of the two stove burners 4 and 4. The operation knobs 11 and 11 are fitted to the front ends of the fuel adjustment units 70 and 70 (see FIGS. 3 and 4), respectively.

  The two stove burners 4, 4 are attached to the bottom surface 25 of the housing 2 via the mount 30 inside the opening 26. The mounting base 30 is a member for fixing the stove burner 4 at a position one step higher than the bottom surface 25 of the housing 2. The fuel flow path device 110 is arranged between the right-side stove burner 4 and the left-side stove burner 4. The fuel flow path device 110 forms a flow path of a fuel gas supplied from the outside of the housing 2 to each of the two stove burners 4 and 4.

  The outline of the fuel flow path device 110 will be described with reference to FIGS. The fuel flow path device 110 is a unit in which the fuel pipe 50, the branch flow path section 60, the fuel adjustment sections 70, 70, and the supply sections 100, 100 are integrally assembled. The fuel flow channel device 110 includes a fuel flow channel 111 for flowing a fuel gas inside. The fuel pipe 50 is a hollow and elongated tubular member provided with a flow path 51 for flowing a fuel gas inside. The flow path 51 forms a part of the fuel flow path 111. The fuel pipe 50 extends through the rear wall portion 24 of the housing 2 so that the rear end portion 50A is disposed outside the housing 2, and the substantially central portion of the opening 26 in the left-right direction is substantially horizontal in the front-rear direction. Extend. The rear end portion 50A of the fuel pipe 50 can be connected to a predetermined gas pipe disposed outside the housing 2, and feeds the fuel gas supplied from the gas pipe into the fuel flow path 111 via the flow path 51. Into the tank.

  The branch flow path portion 60 is a member that is disposed on the front side of the fuel pipe 50 and that branches the fuel gas flowing through the flow path 51 of the fuel pipe 50 in the left-right direction toward each of the stove burners 4 and 4. is there. As shown in FIG. 4, the branch channel section 60 includes a channel 61 formed in an inverted T-shape in plan view for flowing the fuel gas therein. The flow path 61 forms a part of the fuel flow path 111. The channel 61 includes channels 611 and 612. As shown in FIG. 6, the flow channel 611 extends substantially horizontally in the front-rear direction from a rear portion of the branch flow channel portion 60 toward a substantially central portion in the front-rear direction at a substantially central portion in the left-right direction of the branch flow channel portion 60. The branch flow path portion 60 is connected to the front end 50B of the fuel pipe 50 at the rear, and the front end of the flow path 51 and the rear end of the flow path 611 communicate with each other. The flow channel 612 is connected to the front end of the flow channel 611 and extends substantially horizontally in the left-right direction. Therefore, the branch flow path section 60 can branch the fuel gas flowing from the fuel pipe 50 toward each of the stove burners 4 and 4 without increasing the thickness in the vertical direction.

  As shown in FIG. 4, the fuel adjusting units 70, 70 are connected to the left end and the right end of the branch passage 60, respectively, from the left and the right. The fuel adjustment unit 70 includes a valve body 72, an operation shaft 73, a support member 79, and the like. The valve body 72 is formed in a cylindrical shape extending substantially horizontally in the front-rear direction, and forms a main body of the fuel adjustment unit 70. The valve body 72 includes a flow path 71 for flowing the fuel gas inside. The flow path 71 forms a part of the fuel flow path 111. The operation shaft 73 extends in the front-rear direction along an axis L (see FIG. 7) extending in the axial direction of the valve body 72, and is disposed substantially horizontally. The rear end of the operation shaft 73 is inserted into the flow passage 71 from an opening 713A (see FIG. 7) provided at the front end of the valve body 72, and the front end projects forward from the opening 713A. The support member 79 rotatably supports the operation shaft 73 with respect to the valve body 72. With the fuel passage device 110 disposed in the housing 2, the front end of the operation shaft 73 penetrates the front wall 23 of the housing 2. The operation knob 11 is fitted to the front end of the operation shaft 73 from the front side of the front wall 23. The valve body 72 adjusts the amount of fuel gas flowing toward the stove burner 4 according to the rotation of the operation shaft 73.

  Two fixing holes 72A, 72A are provided at a connection portion of the valve body 72 with the branch flow path portion 60 (see FIG. 5). Two screw holes 60A, 60A are provided at the left and right ends of the branch channel section 60 (see FIG. 6). The two fixing holes 72A, 72A are fixed to the two screw holes 60A, 60A with screws, so that the branch flow path portion 60 and the fuel adjusting portion 70 are connected. Thus, the left end 612A of the flow path 612 of the branch flow path section 60 (see FIG. 6) communicates with the flow path 71 of the left fuel adjustment section 70 from the left side. A right end 612B (see FIG. 6) of the flow path 612 of the branch flow path section 60 communicates with the flow path 71 of the right fuel adjustment section 70 from the right side. Therefore, the fuel gas that has flowed into the flow path 61 of the branch flow path section 60 through the flow path 51 of the fuel pipe 50 flows into each of the fuel adjustment sections 70, 70 from the flow path 61.

  In a general stove, the fuel adjustment unit 70 is often arranged in front of the throat unit 46 of the stove burner 4. On the other hand, in the stove 1, the left fuel adjusting section 70 is disposed at a position between the branch flow path section 60 and the left stove burner 4 in the left-right direction. Further, the right fuel adjusting section 70 is disposed at a position between the branch flow path section 60 and the right stove burner 4 in the left-right direction. This eliminates the need for the stove 1 to secure a space for arranging the fuel adjustment section 70 in front of the throat section 46 of the stove burner 4, and thus makes it easier to arrange the fuel adjustment section 70 in front of the stove burner 4. The size of the housing 2 in the front-rear direction can be reduced.

  As shown in FIG. 4, the supply units 100 and 100 are connected to the left side of the left fuel adjustment unit 70 and the right side of the right fuel adjustment unit 70, respectively. The left supply unit 100 and the right supply unit 100 have a symmetrical structure. The supply unit 100 is formed in a substantially L shape in plan view. The supply unit 100 is a member for supplying the fuel gas flowing from the fuel adjustment unit 70 to the stove burner 4. The supply unit 100 includes a flow path 101 for flowing the fuel gas inside. The flow path 101 forms a part of the fuel flow path 111. The left end of the flow path 71 of the left fuel adjustment unit 70 communicates with the flow path 101 of the left supply unit 100 from the left. The right end of the flow path 71 of the right fuel adjustment unit 70 communicates with the flow path 101 of the right supply unit 100 from the right. Therefore, the fuel gas supplied from the fuel adjusting units 70, 70 flows into the supply units 100, 100, respectively. The fuel gas flowing into the supply units 100, 100 is jetted toward the stove burners 4, 4 from the nozzles 93, 93 of the nozzle units 90, 90 provided at the downstream ends of the supply units 100, 100.

  With the configuration of the fuel passage device 110 in this manner, the fuel passage 111 extends substantially horizontally inside the fuel passage device 110. The flow of the fuel gas in the fuel passage 111 is as shown by an arrow Y1 (see FIG. 4).

  The configuration of the fuel adjustment unit 70 will be described in detail with reference to FIGS. The valve body 72 of the left fuel adjustment unit 70 and the valve body 72 of the right fuel adjustment unit 70 have a symmetric structure. Therefore, here, the left fuel adjustment unit 70 will be described, and the description of the right fuel adjustment unit 70 will be omitted. The valve body 72 of the fuel adjusting section 70 has a gas inlet 711A and a gas outlet 714B. The gas inlet 711 </ b> A is an opening provided on the right rear portion of the valve body 72 and communicating with the flow path 71. The gas inlet 711A is connected to the branch channel section 60, and allows the fuel gas to flow from the left end 612A (see FIG. 6) of the channel 612 of the branch channel section 60 into the channel 71. The gas outlet 714 </ b> B is an opening provided at the front left side of the valve body 72 and communicating with the flow path 71. The gas outlet 714B is connected to the supply unit 100, and allows the fuel gas to flow from the flow path 71 to the flow path 101 of the supply unit 100 (see FIG. 4). The gas inlet 711A and the gas outlet 714B are provided on opposite sides of an axis L extending in the axial direction of the valve body 72. The two fixing holes 72A, 72A described above are provided near the gas inlet 711A.

  The flow path 71 of the fuel adjustment unit 70 includes flow paths 711, 712, and 713. The flow path 711 extends leftward from the gas inlet 711A toward the inside of the valve body 72. The left end 711B of the flow path 711 is connected to the right side of the flow path 712. The flow path 712 is a cylindrical space extending in the front-rear direction at the rear of the valve body 72. The front end 712 </ b> A of the channel 712 is connected to the rear of the channel 713. The flow path 713 extends in the axial direction of the valve body 72 from the center in the front-rear direction of the valve body 72 toward the front end. The flow path 714 extends rightward from the gas outlet 714B toward the inside of the valve body 72. The right end 714A of the channel 714 is connected to the left side of the channel 713.

  The fuel adjusting section 70 includes a main valve 75 and a safety valve 76 inside the flow path 71 of the valve body 72. The main valve 75 includes a spindle 74 and an internal slide 77. The spindle 74 is inserted into the flow path 713 and can move forward and backward along the flow path 713. The front end of the spindle 74 is connected to the rear end of the operation shaft 73. The spindle 74 is pushed rearward together with the operation shaft 73 by a turning operation of the operation knob 11 (see FIG. 3). The internal sliding body 77 rotates while sliding on the outer surface of the spindle 74 and the inner surface of the flow path 713 in accordance with the rotation of the operation shaft 73. The overlapping area between the outer surface of the spindle 74 and the inner sliding body 77 changes according to the degree of rotation of the inner sliding body 77, and the amount of fuel gas flowing from the flow path 712 to the flow path 713 changes. Accordingly, the main valve 75 allows the flow paths 712, 713, and 714 to communicate with each other in accordance with the pushing operation of the operation knob 11. The safety valve 76 is an electromagnetic valve that can operate in response to detection of a high temperature caused by combustion of the stove burner 4 by the thermocouple 45. The safety valve 76 is inserted into the flow path 712. The plunger 761 of the safety valve 76 extends in the front-rear direction along the axis L, and the valve body 762 at the front end of the plunger 761 is provided so as to be able to reciprocate in the front-rear direction along the axis L. Normally, the safety valve 76 is in a closed state in which the front end 712A of the flow channel 712 is closed, and the front end 712A is opened by pushing the valve body 762 backward in response to the pushing operation of the operation knob 11.

  The operation of the fuel adjusting unit 70 during the ignition operation will be described. The user performs an ignition operation in which the operation knob 11 is rotated counterclockwise by about 90 ° while being pressed. In response, the operating shaft 73 and the spindle 74 are pushed rearward, and the main valve 75 opens the flow paths 712, 713, and 714. Further, the safety valve 76 is opened. An amount of fuel gas corresponding to the amount of rotation of the internal sliding body 77 flows substantially horizontally from the gas inlet 711A to the gas outlet 714B as shown by the arrow Y2. The fuel gas flowing out of the gas outlet 714B is supplied to the stove burner 4 via the flow path 101 of the supply unit 100. The operation of an igniter (not shown) causes the ignition electrode 44 to discharge, ignite the air-fuel mixture ejected from the flame opening of the burner head 42, and form a flame on the outer peripheral portion of the burner head 42. The safety valve 76 keeps the valve open in response to the control unit (not shown) of the stove 1 determining that a high temperature has been detected in the thermocouple 45 during the combustion of the stove burner 4, and the stove burner 4 misfires and the thermoelectric The valve returns to the closed state in response to the control unit determining that the high temperature is no longer detected in pair 45.

  The stove 1 reduces the cost of the stove 1 by diverting the fuel adjustment unit 70 used in another conventional stove provided in a larger and thicker type than the stove 1 to the stove 1. . In another conventional stove, the fuel adjustment unit 70 is mounted inside with the gas inlet 711A on the lower side and the gas outlet 714B on the upper side with respect to the axis L. On the other hand, the stove 1 is provided with the left fuel adjusting unit 70 rotated counterclockwise by 90 ° about the axis L from the position where it is attached to another conventional stove. In addition, the stove 1 is provided with the right fuel adjusting section 70 rotated clockwise by 90 ° about the axis L from an arrangement attached to another conventional stove. For this reason, both of the fuel adjusting units 70, 70 are arranged in a state where the gas inlet 711A and the gas outlet 714B are separated on the left and right sides with respect to the axis L (see FIG. 7). Thereby, the stove 1 has the fuel flow path 111 in the fuel flow path apparatus 110 configured substantially horizontally, and the height of the fuel flow path apparatus 110 is suppressed. The stove 1 can be made thin by suppressing the height of the housing 2 that houses the fuel flow path device 110 even if the fuel adjustment units 70, 70 used for other stoves are diverted to the stove 1. Can be reduced in size and thickness.

  The configuration of the supply unit 100 will be described in detail with reference to FIGS. The left supply unit 100 and the right supply unit 100 have a symmetric structure. Therefore, here, the left supply unit 100 will be described, and the description of the right supply unit 100 will be omitted. As shown in FIGS. 8 and 9, the supply unit 100 includes a supply flow path unit 80 and a nozzle unit 90. The supply passage section 80 has a shape having two substantially L-shaped portions in plan view, and guides the fuel gas flowing from the gas outlet 714B of the fuel adjusting section 70 forward and to the left of the gas outlet 714B. And a member for supplying a fuel gas to the nozzle portion 90. The nozzle portion 90 has a main body portion 92 having a substantially rectangular shape in a plan view, and ejects the fuel gas flowing from the supply flow passage portion 80 toward the inlet of the upstream end portion 46A of the throat portion 46 of the stove burner 4. Provided with a nozzle 93 (see FIG. 4) for the rear of the main body 92. 8, 9 and 12, the illustration of the nozzle 93 is omitted. In FIG. 11, the illustration of a switching valve 85 described later is omitted.

  The supply flow path section 80 includes a flow path 81 for flowing the fuel gas inside. The flow path 81 forms a part of the flow path 101. The flow path 81 includes flow paths 811, 812, 815, and 814. As shown in FIG. 9, the flow channel 811 extends substantially horizontally in the left-right direction from the right end of the rear portion of the main body 82 of the supply flow channel portion 80 to the left. The fixing portion 72B (see FIG. 5) provided near the gas outlet 714B of the fuel adjusting portion 70 and the fixing portion 82A provided near the right end 811A of the flow path 811 are fixed by screws. The fuel adjusting section 70 and the supply flow path section 80 are connected. As a result, the gas outlet 714B of the fuel adjustment unit 70 communicates with the right end 811A of the flow channel 811.

  The flow channel 812 is a cylindrical space extending in the front-rear direction at a substantially central portion in the left-right direction at the rear of the main body 82. As shown in FIGS. 9 and 11, the left end of the flow channel 811 extends toward the upper part of the flow channel 812, and is connected to the approximate center of the flow channel 812 in the front-rear direction from the right. The flow path 812 functions as a valve chamber in which the valve body 852 of the switching valve 85 is disposed so as to be able to reciprocate in the front-rear direction. As shown in FIG. 10, the switching valve 85 is a keep-type solenoid valve including a plunger 851 and a valve body 852. The plunger 851 extends substantially horizontally in the front-rear direction along the flow path 812. The valve body 852 is provided at the front end of the plunger 851. The switching valve 85 is fixed to the main body 82 in a state where the front portions of the valve body 852 and the plunger 851 are inserted into the flow channel 812 from behind. An opening 812A that penetrates the front end of the flow channel 812 in the front-rear direction at the front end of the flow channel 812 is provided. The opening 812A is provided substantially at the center in the vertical direction of the flow channel 812.

  The flow channel 813 extends substantially horizontally forward from the flow channel 812 at a substantially central portion in the left-right direction of the main body 82. The rear end of the channel 813 is connected to the opening 812A of the channel 812. As shown in FIG. 11, the flow channel 813 extends in the front-rear direction at a position slightly lower than the flow channel 811. The flow path 813 is provided to guide the fuel gas flowing into the fuel adjustment unit 70 forward of the flow paths 811 and 812. The flow path 814 has its right end connected to the front end of the flow path 813, and extends substantially horizontally to the left from the front end of the flow path 813 toward the left stove burner 4 at the front end of the main body 82. . As described above, the flow path 81 allows the fuel gas flowing from the fuel adjustment unit 70 to flow while being turned forward from the rear as shown by the arrow Y3.

  The switching valve 85 is normally in a closed state in which the opening 812A of the flow path 812 is closed, and is in an open state in which the opening 812A is opened when the pot sensor 43 detects a high temperature (for example, 250 ° C. or higher). When the switching valve 85 changes from the closed state to the open state during combustion, the amount of fuel gas flowing through the flow passage 81 decreases, and the amount of fuel gas ejected from the nozzle 93 also decreases. That is, in response to the detection of the high temperature by the pan sensor 43, the supply amount of the fuel gas to the stove burner 4 decreases, and the thermal power of the burner head 42 automatically decreases. It is obligatory to provide such a switching valve 85 for each stove burner 4. By arranging the flow path 812 and the switching valve 85 as described above, the supply flow path section 80 causes the direction in which the plunger 851 extends to be along the direction in which the throat section 46 and the fuel adjustment section 70 of the stove burner 4 extend, The switching valve 85 is prevented from interfering with the throat section 46 and the fuel adjustment section 70.

  The nozzle unit 90 includes a flow path 91 for flowing the fuel gas inside. The flow path 91 forms a part of the flow path 101. The flow path 91 includes flow paths 911, 912, and 913. As shown in FIGS. 9 and 12, the flow channel 911 is a space that expands in a rectangular shape in plan view at a position on the right side inside the main body 92. The left end of the flow path 911 is provided on the right side of the nozzle 93 in plan view. The flange 82B (see FIG. 8) provided at the lower left end of the supply flow path 80 and the fixing holes 92A, 92A provided near the right end 911A of the flow path 911 pass through the flange 82B. The supply flow path 80 and the nozzle 90 are connected by being fixed with screws. Thus, the flow path 814 of the supply flow path unit 80 and the right end 911A of the flow path 911 communicate with each other.

  As shown in FIGS. 8 and 12, the right end 911A of the flow path 911 has a front portion 911C wider than its rear portion 911B, and has an elongated hole-shaped opening extending from the rear to the front. It is. As shown in FIG. 9, the flow path 814 of the supply flow path unit 80 connects to the rear part 911B of the right end 911A of the flow path 911. The fuel gas flowing from the flow path 814 toward the rear part 911B is stored in the flow path 911 while spreading leftward and forward from the left end of the flow path 814, as indicated by an arrow Y3. As described above, the flow path 911 functions as a storage chamber that can store a predetermined amount of the fuel gas flowing from the supply flow path unit 80.

  The channel 912 extends in the left-right direction inside the front part of the main body 92. The flow path 912 is arranged below the flow path 814 of the supply flow path section 80. The right end of the flow path 912 is connected to the lower left end of the flow path 911. The flow path 912 guides the fuel gas stored in the flow path 911 to the left where the nozzle 93 is disposed.

  The flow path 913 connects the left end of the flow path 912 and the nozzle 93 and extends in the front-rear direction. As shown in FIG. 12, the front end 913A of the flow path 913 is connected to the upper part of the left end of the flow path 912. The rear end 913B of the flow path 913 is located at a position higher than the front end 913A at the rear of the main body 92. The nozzle 93 (see FIG. 4) is connected to the rear end 913B. Therefore, the flow channel 913 extends upward and inclining from the front to the rear, and supplies the fuel gas guided by the flow channel 912 to the nozzle 93 (see FIG. 4). The nozzle 93 ejects the fuel gas obliquely upward along the direction in which the flow path 913 extends. As described above, the flow path 91 returns the fuel gas flowing from the supply flow path section 80 from the rear to the front as shown by the arrow Y3, and then returns to the front to supply the fuel gas to the nozzle 93.

  The stove 1 reduces the cost of the stove 1 by diverting the stove burner 4 used in another conventional stove provided in a larger and thicker type than the stove 1 to the stove 1. For this reason, the stove 1 is downsized by arranging the upstream end portion 46A of the throat portion 46 of the stove burner 4 close to the front wall portion 23 of the housing 2. In the present embodiment, the upstream end 46A is arranged close to the front wall 23 so that the inlet of the upstream end 46A is arranged at a position forward of the gas outlet 714B of the fuel adjusting section 70. . In order to cause the fuel gas and air to flow into the inlet provided at the upstream end 46A of the throat portion 46, the fuel gas is vigorously ejected from the nozzle 93, and the surrounding air is drawn into the fuel gas flowing into the inlet. Need to be done. For this reason, the nozzle 93 is arranged in front of the inflow port of the upstream end 46A, and it is necessary to supply the fuel gas to the nozzle 93 from the front. On the other hand, the fuel flow path 111 including the flow path 813 of the supply flow path section 80 connects the inside of the fuel pipe 50, the branch flow path section 60, the fuel adjustment sections 70 and 70, and the supply sections 100 and 100 from the outside. It is provided by excavation. Considering the mass productivity of the fuel passage device 110, there is a predetermined limit to the excavation length, which is a length that allows each portion of the fuel passage 111 to be excavated in a straight line. The length of the channel 813 in the front-rear direction has reached the limit of the excavation length.

  The fuel flow channel device 110 guides the fuel gas guided by the supply flow channel portion 80 further forward than the left end of the flow channel 814 by providing the flow channel 911 having the above configuration inside the nozzle portion 90. are doing. The flow path 912 has the left end located at the same position as the nozzle 93 in the left-right direction, and further guides the fuel gas guided forward by the flow path 911 to the left away from the supply flow path unit 80. . The flow path 913 supplies the fuel gas guided by the flow path 912 to the nozzle 93. As described above, the fuel flow channel device 110 causes the fuel gas guided by the supply flow channel portion 80 to wrap around from the front toward the upstream end portion 46A of the throat portion 46 of the stove burner 4 by the nozzle portion 90, and the excavation length Can make up for the limitations.

  As described above, the fuel flow path device 110 includes the branch flow path section 60 at a position between the two stove burners 4 and 4 in the left-right direction, so that the fuel gas can be supplied without increasing the thickness of the housing 2. It can branch to each of the conro burners 4,4. Although the fuel adjusting section 70 is generally provided in front of the stove burner 4, the stove 1 arranges the fuel adjusting section 70 at a position between the branch flow path section 60 and the stove burner 4. The size of the housing 2 in the front-rear direction can be reduced. The supply flow path section 80 of the supply section 100 guides the fuel gas flowing from the fuel adjustment section 70 forward through the flow path 813 and then from the fuel adjustment section 70 toward the nozzle section 90 through the flow path 814. Flow away. The nozzle section 90 jets the fuel gas flowing from the supply flow path section 80 rearward toward an inlet provided at the upstream end 46A of the throat section 46 of the stove burner 4. Accordingly, the stove 1 can supply the fuel gas to the inflow port even if the upstream end 46A is disposed close to the front wall 23 of the housing 2. In the fuel passage device 110, the branch passage portion 60, the fuel adjustment portions 70, 70, and the supply portions 100, 100 are arranged in the left-right direction between the stove burners 4, 4, so that the fuel passage device 110 Fuel gas can be supplied to each of the stove burners 4 and 4 without increasing the height. Therefore, the stove 1 does not hinder the use of the stove 1 having the small and thin casing 2 with the fuel adjustment unit 70 used in another conventional stove provided in a large and thick type. Fuel gas can be supplied to the stove burners 4 and 4 without coming.

  In order to generate an air-fuel mixture in the throat section 46, the nozzle 93 is disposed in front of the inlet of the upstream end 46A of the throat 46, and the fuel gas is forced from the nozzle 93 toward the inlet of the upstream end 46A. Need to squirt well. On the other hand, there is a limit to the length in the front-rear direction that can be provided in the flow channel 813. The fuel flow channel device 110 can guide the fuel gas guided by the supply flow channel portion 80 further forward than the left end of the flow channel 814 by providing the flow channel 911 inside the nozzle portion 90. The flow path 912 further guides the fuel gas guided forward by the flow path 911 to the left, which is separated from the supply flow path unit 80. The flow path 913 supplies the fuel gas guided by the flow path 912 to the nozzle 93. In this manner, the nozzle unit 90 can circulate the fuel gas guided by the supply flow path unit 80 toward the nozzle 93 from the front, and supply the fuel gas to the upstream end 46A of the throat unit 46 from the front.

  The flow channel 812 has a cylindrical shape extending in the front-rear direction at the rear portion of the main body 82, and has an opening 812 </ b> A at the front end thereof penetrating the front end of the flow channel 812 in the front-rear direction. The flow path 812 allows the valve body 852 of the switching valve 85 and the plunger 851 to be inserted from behind. The valve body 852 is capable of reciprocating in the front-rear direction inside the flow path 812, and switches between a valve-open state in which the opening 812A is opened and a valve-closed state in which the opening 812A is closed, so that fuel gas ejected from the nozzle 93 is switched. The amount can be switched. With such an arrangement of the switching valve 85, the fuel flow path device 110 can prevent the switching valve 85 from interfering with the throat section 46 and the fuel adjusting section 70.

  The stove 1 is provided with a fuel passage device 110 in which the fuel pipe 50, the branch passage portion 60, the fuel adjusting portions 70, 70, and the supply portions 100, 100 are integrally assembled. Workability during manufacturing can be improved.

  The stove 1 rotates each of the left and right fuel adjustment units 70 by 90 ° clockwise or counterclockwise around the axis L from the arrangement of the other stoves in the conventional product, so that the gas inlet 711A and the gas outlet 714B Are divided into a left side and a right side with respect to the axis L. Accordingly, the stove 1 can configure the fuel flow channel 111 in the fuel flow channel device 110 to be substantially horizontal, and can use the thin casing 2 while suppressing the height of the fuel flow channel device 110.

  In the present embodiment, the stove 1 corresponds to the "stove" of the present invention. The housing 2 corresponds to the “housing” of the present invention. The stove burner 4 corresponds to the “stove burner” of the present invention. The throat section 46 corresponds to the “throat section” of the present invention. The burner main body 40 corresponds to the “burner main body” of the present invention. The upstream end 46A corresponds to the “upstream end” of the present invention. The downstream end 46B corresponds to the “downstream end” of the present invention. The fuel passage device 110 corresponds to the “fuel passage device” of the present invention. The fuel flow path 111 corresponds to the “flow path” of the present invention. The branch channel section 60 corresponds to the “branch channel section” of the present invention. The fuel adjusting unit 70 corresponds to a “fuel adjusting unit” of the present invention. The valve body 72 corresponds to the “main body” of the present invention. The gas inlet 711A corresponds to the “gas inlet” of the present invention. The gas outlet 714B corresponds to the “gas outlet” of the present invention. The operation shaft 73 corresponds to the “operation shaft” of the present invention. The supply unit 100 corresponds to the “supply unit” of the present invention. The supply channel section 80 corresponds to the “supply channel section” of the present invention. The channel 813 corresponds to the “first channel” of the present invention. The channel 814 corresponds to the “second channel” of the present invention. The valve body 852 corresponds to the “valve body” of the present invention. The switching valve 85 corresponds to the “valve part” of the present invention. The flow path 812 corresponds to the “valve chamber” of the present invention. The opening 812A corresponds to the “opening of the present invention”. The nozzle section 90 corresponds to the “nozzle section” of the present invention. The nozzle 93 corresponds to the “nozzle” of the present invention. The flow path 911 corresponds to the “reservoir” of the present invention. The flow path 912 corresponds to the “guidance path” of the present invention. The flow path 913 corresponds to the “connection path” of the present invention.

  Note that the present invention is not limited to the above embodiment, and various modifications are possible. Among the components constituting the fuel flow channel device 110, adjacent components such as the fuel pipe 50 and the branch flow channel portion 60 may be configured as an integrated component. Further, the fuel flow path device 110 may be a unit in which the branch flow path section 60, the fuel adjustment sections 70, 70, and the supply sections 100, 100 are integrally assembled without adding the fuel pipe 50 to the configuration. Further, the fuel flow path device 110 is not limited to a configuration in which the branch flow path section 60, the fuel adjustment sections 70, 70, and the supply sections 100, 100 are integrally assembled. For example, only some parts of the branch flow path part 60, the fuel adjustment parts 70, 70, and the supply parts 100, 100 are integrally assembled, and the other parts are separately assembled when the stove 1 is manufactured. Thus, the fuel passage device 110 may be configured.

  When the length in the front-rear direction of the flow channel 813 of the supply flow channel unit 80 is sufficiently long, and the front end of the flow channel 813 and the flow channel 814 are arranged at the position of the front end of the flow channel 913 of the nozzle unit 90. The channel 911 may not be provided in the channel 91. In this case, the flow path 814 and the flow path 912 or the flow path 913 may be directly connected.

  In the above-described embodiment, the stove burners 4, 4 and the operation knobs 11, 11 are the same members, respectively. However, for example, even if the sizes of the stove burners 4, 4 and the operation knobs 11, 11 are different on the left and right. Good.

  In the above embodiment, the fuel adjustment units 70, 70 and the supply units 100, 100 have symmetrical structures, respectively. However, for example, the size of the fuel adjustment units 70, 70 and the supply units 100, 100, etc. , Left and right may be different. In addition, the stove 1 uses the stove burners 4, 4 and the fuel adjustment units 70, 70 used in other stoves, but the stove burners 4, 4 and the fuel adjustment units 70, 70 are dedicated to the stove 1. It may be an article.

REFERENCE SIGNS LIST 1 stove 2 housing 4 stove burner 60 branch flow passage 70 fuel adjustment unit 72 valve body 73 operating shaft 80 supply flow passage 85 switching valve 90 nozzle unit 93 nozzle 100 supply unit 110 fuel flow passage 111 fuel flow passage 711A gas Inlet 714A Gas outlet 812, 812, 814, 911, 912, 913 Channel 812A Opening L Axis

Claims (5)

A housing having an open top, and two stove burners arranged inside the housing,
The conro burner has a tubular throat portion having an inflow port through which fuel gas and air flow in at an upstream end and extending a predetermined length to mix fuel gas and air, and a downstream end of the throat portion has And a burner body connected to the lower part,
The two stove burners are arranged side by side in the left-right direction with the upstream end of the throat portion facing forward and the downstream end facing rearward, respectively.
A stove provided inside the housing, a fuel flow path device constituting a flow path of a fuel gas supplied to each of the two stove burners from the outside of the housing,
The fuel flow path device,
A branch flow path portion disposed between the two stove burners and branching the fuel gas flowing from the rear toward each of the two stove burners;
A fuel adjusting unit connected to the branch channel unit and adjusting a flow rate of fuel gas flowing from the branch channel unit,
A supply unit connected to the fuel adjustment unit, for supplying a fuel gas flowing from the fuel adjustment unit to the stove burner,
The fuel adjustment unit is disposed between the branch flow path unit and the stove burner,
A gas passage is provided inside, and a cylindrical main body extending in the front-back direction,
A gas inlet connected to the branch flow path at the rear of the main body, and for allowing a fuel gas to flow into the main body from the branch flow path;
At the front of the main body, a gas outlet is provided on the opposite side to the gas inlet with respect to an axis extending in the axial direction of the main body, and a gas outlet through which fuel gas flows into the supply unit from inside the main body.
An operating shaft that is rotatably supported by the main body in a state where the front end protrudes forward from the front end of the main body, and is rotated to adjust the flow rate of the fuel gas;
The supply unit includes:
A first flow path for guiding the fuel gas flowing from the fuel adjustment unit forward,
A supply flow path portion including a second flow path extending in the left-right direction from the front end of the first flow path toward the stove burner,
A stove having a nozzle connected to the supply channel and having a nozzle for ejecting fuel gas flowing in from the supply channel toward the inlet of the stove burner rearward. The nozzle unit includes:
A storage chamber that stores the fuel gas flowing from the supply flow path portion while guiding the fuel gas forward,
A guide path connected to the front end of the storage chamber and guiding the fuel gas stored in the storage chamber in a direction away from the supply flow path;
The stove according to claim 1, further comprising: a connection path that connects the guide path and the nozzle and extends in the front-rear direction.   The stove according to claim 1, wherein the supply unit includes an opening at a rear end of the first flow path, the opening being connected to a valve chamber in which a valve body is arranged to be able to move back and forth.   2. The fuel flow path device according to claim 1, wherein the branch flow path unit, the fuel adjustment unit, and the supply unit are arranged inside the housing in a state where the fuel flow path unit is pre-assembled. 3. 3. The stove according to any one of 3.   The stove according to any one of claims 1 to 4, wherein the fuel adjusting unit is arranged such that the gas inlet and the gas outlet are separately provided on the left and right sides with respect to the axis.

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