JP2019027658A - Gas distribution device for gas cooking stove, governor device and gas cooking stove - Google Patents

Abstract

To provide a gas distribution device for a gas cooking stove capable of attaining downsizing, a governor device and the gas cooking stove.SOLUTION: An arrangement part 61 for arranging a gas governor and a channel main body part 81 forming a channel of a gas are integrally formed as a part of a substrate 80 by a die casting method. A groove-like main channel 82 is formed on a bottom face 81A, and an introduction port 76 communicating with the arrangement part 61 is provided at a front end of the main channel 82. A rear end of the main channel 82 is connected to a distribution chamber 85 which distributes the gas to an upper fire distribution path 90 and a lower fire distribution path. The distribution chamber 85 is formed in a recessed shape by using a core, and the lower fire distribution path is also formed in a cylindrical hole shape by using a core. The upper fire distribution path 90 includes a first distribution path 91, a valve chamber 95 and a second distribution path 92. The first distribution path 91 and the second distribution path 92 are groove-shaped on the bottom face 81A. The main channel 82, the first distribution path 91 and the second distribution path 92 are combined in longitudinally extending portions and laterally extending portions, thereby attaining downsizing of the substrate 80, namely, downsizing of a governor device as a result.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a gas distribution device, a governor device, and a gas stove for a gas stove.

  The gas stove is provided with a grill storage for storing an object to be cooked. The grill is equipped with an upper fire burner and a lower fire burner, and heats the food to be cooked by the upper and lower fires. In order to uniformly heat the inside of the grill, the gas is distributed to the upper and lower burners by the gas distributor while being kept at a constant pressure by the gas governor. For example, Patent Literature 1 describes a thermal power adjustment mechanism that includes a gas governor and distributes gas to an upper fire burner and a lower fire burner. Since the thermal power adjustment mechanism controls the gas flow rate using an electromagnetic valve, it forms a complicated gas flow path inside.

  Specifically, the thermal power adjustment mechanism of Patent Document 1 includes a first body member having a gas pressure chamber in which a gas governor is disposed, and a second body member having a recess in which an electromagnetic valve is disposed. The first body member is provided with a main gas passage that communicates the gas pressure chamber and the recess, and a branch passage that bypasses the gas. The second body member is formed with a gas flow path that communicates the recess and the gas outlet. The gas flow path of the second body member is formed in a groove shape on the mating surface with the first body member, thereby realizing a complicated and complicated path. The first body member and the second body member are connected in combination in the direction in which the main gas flow path extends and are integrally assembled by screwing.

JP 2015-36595 A

  However, the thermal power adjusting mechanism described in Patent Document 1 needs to be provided with a screw fixing portion on the body member, and it is difficult to reduce the size. Moreover, since the gas flow path on the second body member side opens in a groove shape on the mating surface, it is necessary to cover all the grooves with a large packing to prevent gas leakage. In addition, since the main gas flow path and the branch flow path pass through the mating surfaces of the two body members, a packing is also provided on the mating surface on the first body side to prevent gas leakage. It is necessary to provide a through hole to ensure gas circulation. Further, in order to reinforce the packing, it is necessary to dispose a metal closing plate between the two packings, increasing the number of parts and making it difficult to reduce the size.

  An object of the present invention is to provide a gas distribution device, a governor device, and a gas stove that can be miniaturized.

  A gas distribution device for a gas stove according to claim 1 of the present invention includes an upper fire burner and a lower fire burner for heating an object to be cooked accommodated in a grill provided in a casing of the gas stove, and a gas supply pressure. A gas stove provided between a gas governor that regulates pressure and supplies gas to the upper fire burner and the lower fire burner, distributes gas supplied from the gas governor, and distributes the gas to the upper fire burner and the lower fire burner. A gas distribution device, wherein a flow channel main body in which a gas flow channel is formed, an inlet that is provided on one end of the flow channel main body and is an inlet of a gas supplied from the gas governor, A main channel, which is a channel extending from the introduction port toward the other end of the channel main body, and a recess formed at the other end, communicated with the main channel in the recess, and the main channel Gas flowing in through the channel A distribution chamber that can be disposed and discharged from two distribution ports in the recess, two solenoid valves that cover the opening of the distribution chamber and that can open and close the two distribution ports, and the flow path body. Provided on the first surface which is one of the outer surfaces of the section, and a lower fire supply port which is an outlet for gas supplied to the lower fire burner, and an outlet for gas which is provided on the first surface and supplied to the upper fire burner. A certain upper-fire supply port, a lower-fire distribution path that is a gas flow path extending from one of the two distribution ports toward the lower-fire supply port, and the other of the two distribution ports An upper-fire distribution channel that is a gas flow path extending from the distribution port toward the upper-fire supply port, and the lower-fire distribution channel and the upper-fire distribution channel each have a first extension of the main flow channel. A first channel portion that is a channel portion along the direction and a channel portion along the second direction that intersects the first direction. Formed including at least one of the two flow passage portions, the first flow passage portion communicates with the distribution chamber, and extends in the first direction within the flow passage main body portion. The second channel portion is formed in a groove shape on the second surface opposite to the first surface of the channel body and is fixed to the second surface. The channel is a channel in which the open portion of the groove is closed by the lid body.

  A gas distribution device for a gas stove according to a second aspect of the present invention is provided on the first surface in addition to the configuration of the first aspect of the invention, and the lower fire distribution on the side of the distribution chamber from the lower fire supply port. A first restriction chamber, which is connected to a passage, and in which a first restriction valve through which a certain amount of gas can pass is disposed, the distribution chamber, and the first restriction chamber are connected, and the first restriction valve A first connection path for bypassing and flowing gas from the distribution chamber to the lower fire distribution path while restricting the flow rate, and the first connection path is cylindrical from the distribution chamber along the first direction. It comprises the first flow path portion extending in the direction, and is connected to the first restriction chamber.

  A gas distribution device for a gas stove according to a third aspect of the present invention is the gas distribution device for a gas stove according to the first or second aspect, wherein the portion connected to the distribution chamber in the lower fire distribution path and the upper fire distribution path is the It is characterized by comprising the first flow path portion.

  According to a fourth aspect of the present invention, there is provided a gas distribution device for a gas stove according to any one of the first to third aspects, wherein the other end portion has a recess in the second direction side of the distribution chamber. A valve chamber that is formed and provided in the middle of the upper fire distribution path, controls gas flow in the upper fire distribution path, covers an opening portion of the valve chamber, and the upper fire distribution path in a recess. A solenoid valve capable of opening and closing the connection port of the first heat distribution channel, the first distribution channel connecting the distribution chamber and the valve chamber, and the valve chamber and the upper heat supply port. Each of the second flow paths includes the second flow path portion, and the second flow path portion of the first distribution path and the second flow path portion of the second distribution path are It is characterized by being formed adjacent to each other at a position adjacent to the distribution chamber on the side of the main flow path.

  A gas distribution device for a gas stove according to a fifth aspect of the present invention is provided on the first surface in addition to the structure of the fourth aspect of the invention, and is arranged on the upper fire distribution path on the distribution chamber side than the valve chamber. A second restriction chamber in which a second restriction valve through which a certain amount of gas can pass is disposed, the distribution chamber, and the second restriction chamber are connected, and the gas flow rate is controlled by the second restriction valve. A second connection path for bypassing and flowing gas from the distribution chamber to the upper fire distribution path while restricting, the second connection path extending in a cylindrical shape from the distribution chamber along the first direction It consists of said 1st flow-path part, It connects to said 2nd restriction | limiting chamber, It is characterized by the above-mentioned.

  A gas distribution device for a gas stove according to a sixth aspect of the present invention is the gas distribution device for a gas stove according to the fourth or fifth aspect, wherein the portion where the upper fire distribution passage is connected to the valve chamber is constituted by the first flow passage portion. It is characterized by being.

  A governor device according to a seventh aspect of the present invention comprises the gas distribution device of the gas stove according to any one of the first to sixth aspects, and a gas governor that regulates and supplies the pressure of the gas taken in from the outside. The path main body part has an intake port connected to the introduction port and taking in gas from the outside at the one end part, and an arrangement part for arranging the gas governor is integrally provided.

  According to an eighth aspect of the present invention, in addition to the configuration of the seventh aspect of the invention, the main flow path is formed in a groove shape on the second surface, and the introduction port and the groove are formed in the groove. A step portion for connecting the bottom to the bottom is provided.

  The gas stove of the invention according to claim 9 comprises, in the housing, a grille for storing the food to be cooked, an upper fire burner and a lower fire burner for heating the food to be cooked contained in the grille, and And a gas pipe that connects the upper fire burner and the lower fire burner, and the upper fire burner and the lower fire burner, respectively.

  According to the gas distribution device of the gas stove according to the first aspect of the present invention, the flow path main body of the gas distribution device is made of, for example, die casting and is made of one part, and uses a mold that forms the first surface side and the second surface side. It can be formed by injection molding. Since the second flow path portion is provided in a groove shape on the second surface, it can be easily formed by a mold that forms the second surface side. The first channel portion has a cylindrical hole shape along the first direction, and communicates with a distribution chamber provided at the other end. Therefore, the distribution chamber and the first channel portion can be formed by one injection molding together with the second channel portion by using the core. And if a 1st flow path part and a 2nd flow path part are combined, the gas flow path of a complicated path | route can be formed. Therefore, the flow path main body provided with the lower fire distribution path and the upper fire distribution path can be obtained as one part formed by the mold. Therefore, the gas distribution device can reduce the size of the entire device.

  According to the gas distribution device of the gas stove of the invention according to claim 2, in addition to the effect of the invention of claim 1, the first connection path provided for bypassing the gas comprises the first flow path portion. The road body part can easily form the first connection path. Therefore, the gas distribution device can reduce the size of the entire device.

  According to the gas distribution device of the gas stove of the invention according to claim 3, in addition to the effect of the invention according to claim 1 or 2, the distribution chamber is formed with a recess. By forming the part that connects to the distribution chamber in the lower fire distribution path and the upper fire distribution path with the first flow path part, the flow path body part is integrally formed with the core in the molding by the mold. can do.

  According to the gas distribution device of the gas stove of the invention according to claim 4, in addition to the effect of the invention according to any one of claims 1 to 3, by providing a valve chamber in the middle of the upper fire distribution path, Although the route of the path is complicated, the flow path main body can easily form the upper fire distribution path by including the first flow path portion and the second flow path portion. Further, the second flow path portion of the first distribution path and the second flow path portion of the second distribution path are formed adjacent to each other at a position adjacent to the distribution chamber on the side of the main flow path. Therefore, the arrangement space of the main flow path, the first distribution path, and the second distribution path in the flow path main body can be saved, and the flow path main body can be downsized.

  According to the gas distribution device of the gas stove of the invention of claim 5, in addition to the effect of the invention of claim 4, the second connection path provided for bypassing the gas comprises the first flow path portion. The road body part can easily form the second connection path. Therefore, the gas distribution device can reduce the size of the entire device.

  According to the gas distribution device of the gas stove of the invention of claim 6, in addition to the effect of the invention of claim 4 or 5, the valve chamber is formed with a recess. By configuring the portion connected to the valve chamber in the upper fire distribution channel by the first flow channel portion, the flow channel main body portion can be integrally formed by the core in the connection portion and the valve chamber in molding by a mold.

  According to the governor device of the invention according to claim 7, the gas governor and the gas distribution device of the gas stove according to any one of claims 1 to 6 are integrated by providing the gas governor arrangement portion in the flow path main body portion. be able to. Therefore, miniaturization of the governor device can be achieved.

  According to the governor device of the invention according to claim 8, in addition to the effect of the invention according to claim 7, when the introduction port is formed not at the side of the arrangement part but at a position overlapping with the arrangement part, In order to ensure the thickness of the part, it is necessary to shape the shape near the inlet to match the shape of the diaphragm of the gas governor. The governor device is a mold that forms the second surface side, and the main flow path is formed in a groove shape, so that the step portion that connects the inlet and the groove bottom in the groove of the main flow path can be easily formed by the mold. It can form and can ensure the thickness of an arrangement part. Thereby, since a flow-path main-body part and an arrangement | positioning part can be arrange | positioned more closely, the further miniaturization of a governor apparatus can be achieved.

  According to the gas stove of the invention according to claim 9, by reducing the size of the governor device according to claim 7 or 8, the gas stove can ensure the degree of freedom of arrangement layout in the housing.

  In the present invention, the invention-specifying matters of claims 1 to 9 may be arbitrarily combined.

1 is a perspective view of a gas stove 1. It is a top view of the gas stove 1 which removed the top plate 3 and the right burner 4. FIG. 4 is a diagram illustrating a flow path configuration of a gas supplied to the grill device 20. 3 is a perspective view of a governor device 50. FIG. 3 is an exploded perspective view of the governor device 50. FIG. It is the perspective view which looked at the base | substrate 80 from back diagonally left upper direction. It is the perspective view which looked at the base | substrate 80 from diagonally forward and lower right. 3 is a plan view of a base body 80. FIG. 4 is a bottom view of a base body 80. FIG. 4 is a rear view of a base body 80. FIG.

  Embodiments of the present invention will be described below. The structure of the apparatus described below is merely an illustrative example, and is not intended to be limited to that unless otherwise specified. The drawings are used to explain technical features that can be adopted by the present invention. In the following description, left, right, front, back, and top and bottom indicated by arrows in the figure are used.

  The gas stove 1 will be described with reference to FIGS. 1 and 2. The gas stove 1 is a built-in stove. The gas stove 1 includes a housing 2 and a top plate 3. The housing 2 is open at the top, and the top plate 3 is installed at the opening. In the top 3, a right burner 4 is provided on the right front side, a left burner 5 is provided on the left front side, and a back burner 6 is provided on the center rear side. An exhaust port 7 of a grill device 20 (see FIG. 2) installed in the housing 2 is provided at the rear portion of the top plate 3.

  A grill door 8 is provided in the approximate center of the front surface of the gas stove 1. The grill door 8 opens and closes a front opening portion of a grill box 25 (see FIG. 3) provided in the grill device 20. In the area on the right side of the grill door 8, two operation knobs 11 and 12 having a circular shape in front view are provided side by side in the horizontal direction. In the left region of the grill door 8, two operation knobs 13 and 14 having the same shape are provided side by side in the same height position as the operation knobs 11 and 12. The operation knobs 11 and 12 are operated to ignite, extinguish and adjust the thermal power of the upper burner 26 and the lower fire burner 27 (see FIG. 3) in the right burner 4 and the grill 25, respectively. The operation knobs 13 and 14 are operated to ignite, extinguish, and adjust the thermal power of the back burner 6 and the left burner 5, respectively.

  The gas stove 1 includes four fuel supply devices that supply gas to the right burner 4, the left burner 5, the back burner 6, the upper fire burner 26, and the lower fire burner 27. Among them, a fuel supply device 30 (see FIG. 2) for supplying gas to the right burner 4 is a device including a push / push mechanism, a main valve, a safety valve, a gas flow path, a flow rate adjusting cam, and the like (not shown). The operation knob 11 is attached to the front end portion of the fuel supply device 30. The fuel supply device 30 performs ignition and extinguishing of the right burner 4 and adjustment of the amount of gas supplied to the right burner 4 by pushing and rotating the operation knob 11. The pushing operation is an operation of pushing the front surface of the operation knob 11 backward and pushing the operation knob 11 inward from the front surface of the gas stove 1.

  The push-push mechanism is a known cam mechanism, and each time a push-in operation is performed, the operation knob 11 is alternately moved to a standby position and an operation position, and the main valve is maintained in an open state or a closed state according to each position. . The standby position is a position where the front end surface of the operation knob 11 is substantially flush with the front surface of the gas stove 1. When in the standby position, the main valve is in a closed state, and the fuel supply device 30 cuts off the supply of gas to the right burner 4. The operation position is a position where the tip surface of the operation knob 11 protrudes forward from the standby position. When in the operating position, the main valve is in an open state, and the fuel supply device 30 is in a state where gas can be supplied to the right burner 4. When in the operation position, the operation knob 11 is rotatable (rotatable) around an axis along the front-rear direction.

  The rotation operation is an operation of gripping the side surface of the operation knob 11 and rotating around the axis in the front-rear direction. The gas flow rate adjusting cam adjusts the flow rate of the gas supplied to the right burner 4 by moving a flow rate adjusting valve (not shown) according to the turning operation. The safety valve is an electromagnetically operated valve that is elastically biased to a closed state in which the gas flow path is closed. A fuel supply device (not shown) that supplies gas to the left burner 5 and the back burner 6 has the same configuration as the fuel supply device 30 and will not be described. Similarly, the operation knobs 13 and 14 are attached to the front end portion of the fuel supply device.

  The fuel supply device 40 that supplies gas to the grill device 20 includes a push-push mechanism, a safety valve 41, a main valve 42 (see FIG. 3), a gas flow path, and the like similar to the fuel supply device 30. No flow control valve is provided. The operation knob 12 is attached to the front end portion of the fuel supply device 40. The fuel supply device 40 maintains the main valve 42 in an open state or a closed state by pushing the operation knob 12. The safety valve 41 is opened by pushing the operation knob 12 and is kept open by energization from a control device (not shown) of the gas stove 1. Further, when the control device stops energization due to occurrence of an abnormality or the like, the safety valve 41 is closed. The fuel supply device 40 opens and closes the safety valve 41 and the main valve 42, and supplies gas to a governor device 50 (see FIG. 4) described later.

  The fuel supply device 40 has a plurality (two in this embodiment) of micro switches (not shown) around the rotation axis of the operation knob 12. When the operation knob 12 is in the operation position, the fuel supply device 40 can switch the combination of the on / off states of the microswitches according to the turning operation of the operation knob 12. The governor device 50 adjusts the flow rate of the gas supplied from the fuel supply device 40 according to the combination of the on / off states of the microswitch and supplies the gas to the upper fire burner 26 and the lower fire burner 27.

  With reference to FIG. 3, the structure of the flow path which supplies gas to the grill apparatus 20 is demonstrated. The upper fire burner 26 and the lower fire burner 27 provided in the grill warehouse 25 of the grill device 20 burn gas supplied from the outside through the fuel supply device 40 and the governor device 50. As described above, the fuel supply device 40 includes the safety valve 41 and the main valve 42 and is arranged in series on the gas flow path. Therefore, the fuel supply device 40 supplies gas to the governor device 50 only when both the safety valve 41 and the main valve 42 are open.

  The governor device 50 is installed behind and below the fuel supply device 40 in the housing 2 (see FIG. 2), and is connected to the fuel supply device 40 by a gas pipe 51. The detailed structure of the governor device 50 will be described later. The governor device 50 includes a gas governor 60 and a gas distributor 70. The gas governor 60 regulates the supply pressure of the gas supplied from the fuel supply device 40 and supplies it to the gas distribution device 70.

  The gas distribution device 70 distributes the gas regulated by the gas governor 60 to the upper fire burner 26 and the lower fire burner 27. The governor device 50 is connected to the upper fire burner 26 and the lower fire burner 27 by a gas pipe 45 and a gas pipe 46, respectively. An electromagnetic valve 71 and a needle valve 74 are provided in the flow path for distributing gas to the lower fire burner 27. The electromagnetic valve 71 is driven according to the combination of the on / off state of the micro switch of the fuel supply device 40 and opens and closes the flow path of the gas flowing through the lower fire burner 27. The needle valve 74 is provided in a flow path that bypasses the electromagnetic valve 71. Therefore, even if the electromagnetic valve 71 closes the gas flow path, the gas passes through the bypass flow path via the needle valve 74 and flows to the lower fire burner 27. The flow rate of gas passing through the bypass flow path via the needle valve 74 is smaller than the flow rate of gas passing through the flow path via the electromagnetic valve 71.

  Solenoid valves 72 and 73 and a needle valve 75 are provided in the flow path for distributing gas to the upper fire burner 26. The solenoid valve 72 and the solenoid valve 73 are arranged in series. The electromagnetic valve 72 is driven according to the combination of the on / off states of the micro switch of the fuel supply device 40 and opens and closes the flow path of the gas flowing through the upper fire burner 26. The needle valve 75 is provided in a flow path that bypasses the electromagnetic valve 72. Therefore, even if the electromagnetic valve 72 closes the gas flow path, the gas passes through the bypass flow path via the needle valve 75 and flows to the upper fire burner 26. The flow rate of the gas passing through the bypass flow path via the needle valve 75 is smaller than the flow rate of the gas passing through the flow path via the electromagnetic valve 72. The electromagnetic valve 73 is driven in accordance with an instruction from a control device (not shown) of the gas stove 1 to open and close the flow path of the gas flowing through the upper fire burner 26.

  Thus, the governor device 50 switches the driving states of the three electromagnetic valves 71 and 72 corresponding to the microswitch, and adjusts the heating power of the upper fire burner 26 and the lower fire burner 27, respectively. The solenoid valve 73 is controlled to be in an open state when the heating power of the upper fire burner 26 and the lower fire burner 27 is adjusted by the turning operation of the operation knob 12. The upper fire burner 26 burns with a strong fire when the solenoid valve 72 is open, and burns with a low fire when the solenoid valve 72 is closed. The lower fire burner 27 burns with a strong fire when the electromagnetic valve 71 is open, and burns with a low fire when the electromagnetic valve 71 is closed. The fuel supply device 40 and the governor device 50 can cope with various cooking by heating the inside of the grill 25 by combining the combustion states of the upper fire burner 26 and the lower fire burner 27 with a low fire or a high fire. . In addition, based on a user's operation, when the cooking mode suitable for the cooking which set the upper fire burner 26 to extinguish and prevented the burning of the surface by an upper fire is set, a control apparatus will make the solenoid valves 71-73 into a closed state. . As a result, the upper fire burner 26 is extinguished and the lower fire burner 27 can be burned with low heat.

  Next, the structure of the governor device 50 will be described with reference to FIGS. As shown in FIGS. 4 and 5, the governor device 50 is a device in which a gas governor 60 and a gas distribution device 70 are integrally formed. The governor device 50 includes a gas governor 60, an arrangement unit 61, a gas distribution device 70, a fastener 53, and a gas pipe 51. The gas distribution device 70 includes a flow channel main body 81, electromagnetic valves 71 to 73, fixtures 56 and 57, packings 58 and 59, needle valves 74 and 75, a cork packing 54, and a lid 55. The arrangement portion 61 and the flow channel main body 81 are integrally formed as a base body 80.

  First, the structure of the base body 80 will be described. As shown in FIGS. 6 to 10, the base body 80 is so-called die casting formed by press-fusing molten metal (for example, aluminum or aluminum alloy) into a mold that is divided in the vertical direction. As described above, the base body 80 includes the arrangement portion 61 and the flow path main body portion 81. The placement unit 61 is provided on the front side of the flow channel main body 81. The right end portion of the base body 80 is formed by aligning the right end portion of the flow channel main body 81 and the arrangement portion 61 in plan view (see FIG. 8), and the left end portion is located on the left side of the flow passage main body 81 from the arrangement portion 61. It is greatly formed. 6-9, the flow of the gas which distribute | circulates the inside of the flow-path main-body part 81 is shown by a thick line (a solid line or a dotted line), and the direction through which gas flows is shown by the arrow.

  The arrangement part 61 is a part where the gas governor 60 is assembled. The gas governor 60 is well known and will not be described in detail, but includes a spring, a valve body, and a diaphragm (not shown). The valve body is pressed in the direction to open the valve by the biasing of the spring. The diaphragm moves the valve body in a direction to close the valve against the spring pressure as the pressure of the gas flowing in from the inlet side increases. The gas governor 60 regulates the gas pressure so that the gas pressure on the outlet side becomes substantially constant even if the gas pressure on the inlet side changes.

  The arrangement portion 61 is formed in a circular concave shape on the upper surface side of the base body 80 in accordance with the shape of the diaphragm. An intake port 52 for taking in the gas supplied from the fuel supply device 40 via the gas pipe 51 is formed on the left side of the arrangement portion 61. The intake port 52 communicates with the inside of the vertical hole 62 in which the valve body is arranged in the arrangement portion 61. In addition, an introduction port 76 that communicates with the flow path main body 81 is formed at a portion of the placement portion 61 where the diaphragm is placed.

  The flow channel main body 81 has a main flow channel 82. The main channel 82 is connected to the introduction port 76 and extends straight rearward from the introduction port 76 toward the rear end portion of the channel main body 81. A portion extending in the same front-rear direction as the main flow channel 82 among the gas flow channels of the flow channel main body 81 is referred to as a “first flow channel portion” for convenience. The main channel 82 is formed in a groove shape that opens at the bottom surface 81 </ b> A of the channel main body 81. The front end portion of the main channel 82 overlaps with the arrangement portion 61 in plan view. Since the placement portion 61 is formed with a recess, the groove bottom at the front end of the main channel 82 is close to the recess bottom of the placement portion 61 in the vertical direction. In order to secure a thickness between the bottom of the groove and the bottom of the recess, the front end portion of the main channel 82 is provided with a step portion 82A in which the bottom portion of the groove is formed in a step shape. The uppermost step of the stepped portion 82A is located in the groove, and the introduction port 76 opens to the uppermost step of the stepped portion 82A, and communicates the inside of the arrangement portion 61 and the main flow path 82.

  A distribution chamber 85 is provided at the rear end of the flow channel main body 81. The distribution chamber 85 is formed in a concave shape that is open on the rear side and is recessed forward. The opening of the distribution chamber 85 has an oval shape that is long in the left-right direction (see FIG. 10). The distribution chamber 85 is formed by a core that is inserted into the mold forward from the rear during molding by the mold. In the distribution chamber 85, valve bodies (not shown) of electromagnetic valves 71 and 72 described later are arranged. Around the opening portion, a groove 85B in which an annular packing 58 (see FIG. 5) is disposed is formed. The rear end of the main channel 82 is connected to the bottom of the distribution chamber 85. A hole 85A is opened at the bottom of the distribution chamber 85, and the distribution chamber 85 and the main channel 82 communicate with each other through the hole 85A.

  At the bottom of the distribution chamber 85, distribution ports 85C and 85D are opened on the right and left sides of the hole 85A, respectively. At the bottom of the distribution chamber 85, a bypass port 85E is opened above the distribution port 85C, and a bypass port 85F is opened above the distribution port 85D.

  The right distribution port 85 </ b> C is connected to the lower fire distribution path 86. The lower fire distribution path 86 is a gas flow path connecting the distribution chamber 85 and the lower fire supply port 78. The lower fire distribution path 86 extends in a straight cylindrical shape forward from the distribution port 85C (see FIG. 6). The lower fire distribution path 86 includes a first flow path portion. The front end portion of the lower fire distribution path 86 is located at the approximate center of the base body 80 (the front portion of the flow channel main body 81) in the front-rear direction. The distribution port 85 </ b> C and the lower fire distribution path 86 are formed by a core that forms the distribution chamber 85.

  A lower fire supply port 78 is provided on the upper surface 81 </ b> B of the flow path main body 81. The lower fire supply port 78 is formed in a circular concave shape on the upper surface 81B, and a hole 78A communicating with the front end of the lower fire distribution path 86 is opened at the center of the bottom. A gas pipe 46 (see FIG. 2) that sends gas to the lower fire burner 27 is connected to the lower fire supply port 78.

  The bypass port 85E on the upper right side is connected to the bypass path 88. The bypass channel 88 is a flat cylindrical channel extending straight forward from the bypass port 85E (see FIG. 6). In the front-rear direction, a needle valve chamber 87 is provided on the upper surface 81B between the lower fire supply port 78 and the distribution chamber 85. The needle valve chamber 87 is formed in a circular concave shape that is vertically long on the upper surface 81B, and a hole portion 87A that communicates with the central portion of the lower fire distribution path 86 is opened at the center of the bottom portion. A hole 87 </ b> B (see FIGS. 6 and 8) opens in the rear side portion of the needle valve chamber 87. The bypass path 88 connects between the bypass port 85E and the hole 87B. The bypass path 88 and the needle valve chamber 87 form a flow path that connects the distribution chamber 85 and the lower fire distribution path 86 without going through the distribution port 85C.

  The distribution chamber 85 communicates with the upper fire distribution path 90 through the left distribution port 85D. The distribution port 85D in the first distribution path 91 opens to the rear side portion of the right end portion of the first distribution path 91. The upper-fire distribution path 90 is a gas flow path that connects the distribution chamber 85 and the upper-fire supply port 77. The upper fire distribution path 90 includes a first distribution path 91, a valve chamber 95, and a second distribution path 92. The first distribution path 91 extends in the left-right direction, and is connected to the distribution port 85D at the right end. A portion extending in the left-right direction intersecting with the main flow channel 82 among the gas flow channels of the flow channel main body 81 is referred to as a “second flow channel portion” for convenience. The 1st distribution path 91 consists of a 2nd flow-path part. The first distribution path 91 is formed in a groove shape that opens at the bottom surface 81A. The right end portion of the first distribution path 91 is located on the left side of the main flow path 82 and is separated from the main flow path 82 by a wall portion.

  The valve chamber 95 is provided on the left side of the distribution chamber 85 at the rear end portion of the flow channel main body 81. The valve chamber 95 is formed in a concave shape that is open on the rear side and is recessed forward. The opening portion of the valve chamber 95 has a circular shape (see FIG. 10). The valve chamber 95 is formed by a core similar to the distribution chamber 85. A valve body (not shown) of an electromagnetic valve 73 described later is disposed in the valve chamber 95. Around the opening portion, a groove portion 95B in which an annular packing 59 (see FIG. 5) is disposed is formed. The left end portion of the first distribution path 91 is connected to the bottom right side of the valve chamber 95. A hole 95A is opened at the bottom right end of the valve chamber 95, and the valve chamber 95 and the first distribution path 91 communicate with each other via the hole 95A. In addition, a connection port 95 </ b> C is opened at the bottom center of the valve chamber 95.

  The valve chamber 95 communicates with the second distribution path 92 through the connection port 95C. The connection port 95 </ b> C in the second distribution path 92 opens to the rear side portion of the rear end portion of the second distribution path 92. The rear end portion of the second distribution path 92 is located on the left side of the left end portion of the first distribution path 91. The second distribution path 92 extends forward from the rear end, bends obliquely, and further extends to the right. A portion extending in front of the second distribution path 92 is a first flow path portion extending in parallel with the main flow path 82. A portion extending to the right of the second distribution path 92 is a second flow path portion, and is arranged in parallel with the first distribution path 91 on the front side of the first distribution path 91. Thus, the upper fire distribution path 90 is formed including the first flow path portion and the second flow path portion.

  The right end portion of the second distribution path 92 is located substantially at the center of the base body 80 (the front portion of the flow path body 81) in the front-rear direction and the left-right direction, and is located on the left side of the main flow path 82 and the right end of the first distribution path 91. Located on the front side of the section. The right end portion of the second distribution path 92 and the front end portion of the lower fire distribution path 86 are located on the opposite side in the left-right direction with the main flow path 82 interposed therebetween. The second distribution path 92 is formed in a groove shape opened at the bottom surface 81A. The second distribution path 92 is provided with a wall portion separated from the main flow path 82 and the first distribution path 91. Note that the hole 92A that opens to the bottom of the groove in the bent portion of the second distribution path 92 is a service port that is used during manufacture and maintenance of the gas stove 1, and is usually sealed with a gasket and screws.

  An upper fire supply port 77 is provided on the upper surface 81 </ b> B of the flow path main body 81 on the left side of the lower fire supply port 78. The upper fire supply port 77 is formed in a circular concave shape on the upper surface 81B, and a hole 77A (see FIG. 8) communicating with the right end of the second distribution path 92 is opened at the center of the bottom. The hole 77 </ b> A in the second distribution path 92 opens at the groove bottom at the right end of the second distribution path 92. A gas pipe 45 (see FIG. 2) that sends gas to the upper fire burner 26 is connected to the upper fire supply port 77.

  A bypass port 85 </ b> F in the distribution chamber 85 is connected to the bypass path 98. The bypass channel 98 is a flat cylindrical channel extending straight forward from the bypass port 85F (see FIG. 6). In the front-rear direction, a needle valve chamber 97 is provided on the upper surface 81B between the upper fire supply port 77 and the distribution chamber 85. The needle valve chamber 97 is formed in a circular concave shape that is vertically long on the upper surface 81B, and a hole 97A (see FIG. 8) that communicates with the right end of the first distribution path 91 is opened at the center of the bottom. A hole 97 </ b> B (see FIGS. 6 and 8) opens in the rear side portion of the needle valve chamber 97. The bypass path 98 connects between the bypass port 85F and the hole 97B. The bypass path 98 and the needle valve chamber 97 form a flow path that connects the distribution chamber 85 and the first distribution path 91 without going through the distribution port 85D.

  The governor device 50 is completed by assembling various parts to the base body 80 having the above configuration. As shown in FIGS. 4 and 5, the gas governor 60 is fixed to the arrangement portion 61 of the base body 80 with screws. A gas pipe 51 is connected to the intake port 52, and a stopper 53 for preventing removal covers the intake port 52 and the gas pipe 51 and is fixed with screws. The needle valve 74 is inserted into the needle valve chamber 87. The needle valve 74 includes two O-rings 74A and 74B. The O-ring 74 </ b> A is attached to the upper part of the needle valve 74 and seals the upper opening for inserting the needle valve 74 into the needle valve chamber 87. The O-ring 74B is attached to the lower portion of the needle valve 74, and seals the hole 87A that communicates the needle valve chamber 87 and the lower fire distribution path 86. A screw 74 </ b> C is fastened to the side of the needle valve 74. The screw 74 </ b> C presses the upper part of the needle valve 74 with a screw head and is fixed to the needle valve chamber 87. The needle valve 74 opens a lateral hole 74D on the side surface between the O-ring 74A and the O-ring 74B, and opens a narrow hole (not shown) passing through the inside of the O-ring 74B and communicating with the lateral hole 74D on the lower surface. The horizontal hole 74D faces the hole 87B of the bypass path 88 in the needle valve chamber 87, and the narrow hole faces the lower fire distribution path 86 through the hole 87A. Therefore, the gas flowing from the distribution chamber 85 through the bypass path 88 and into the needle valve chamber 87 can flow through the horizontal hole 74D and the narrow hole to the lower fire distribution path 86. The needle valve 74 does not block the gas flowing through the needle valve chamber 87, but can restrict the gas flow rate by the narrow hole.

  The configuration of the needle valve 75 is the same as that of the needle valve 74, and includes two O-rings 75A and 75B. The O-ring 75 </ b> A is attached to the upper portion of the needle valve 75 and seals the upper opening for inserting the needle valve 75 into the needle valve chamber 97. The O-ring 75B is attached to the lower part of the needle valve 75 and seals the hole 97A that communicates the needle valve chamber 97 and the first distribution path 91. The screw 75C fastened to the side of the needle valve 75 presses the upper part of the needle valve 75 inserted into the needle valve chamber 97 with a screw head. The needle valve 75 opens a lateral hole 75D on the side surface between the O-ring 75A and the O-ring 75B, and opens a narrow hole (not shown) passing through the inside of the O-ring 75B and communicating with the lateral hole 75D on the lower surface. The horizontal hole 75D faces the hole 97B of the bypass path 98 in the needle valve chamber 97, and the narrow hole faces the first distribution path 91 through the hole 97A. Therefore, the gas flowing from the distribution chamber 85 through the bypass path 98 and into the needle valve chamber 97 can flow through the lateral hole 75D and the narrow hole to the first distribution path 91. The needle valve 75 does not block the gas flowing through the needle valve chamber 97, but the flow rate of the gas can be limited by the narrow hole.

  The electromagnetic valves 71 and 72 are integrally held by the fixing bracket 56 and are fixed to the rear portion of the distribution chamber 85 via the packing 58. The opening portion is covered with the fixing metal fitting 56 and the packing 58, whereby the distribution chamber 85 is sealed. The valve bodies of the electromagnetic valves 71 and 72 are disposed behind the distribution ports 85C and 85D in the distribution chamber 85, respectively. When the solenoid valves 71 and 72 are driven, the valve bodies close the distribution ports 85C and 85D, respectively, and restrict the gas flow path to the flow paths via the bypass paths 88 and 98.

  The electromagnetic valve 73 is held by the fixing bracket 57 and is fixed to the rear portion of the valve chamber 95 via the packing 59. The valve chamber 95 is hermetically sealed by covering the opening with the fixing bracket 57 and the packing 59. The valve body of the electromagnetic valve 73 is disposed behind the connection port 95 </ b> C in the valve chamber 95. When the electromagnetic valve 73 is driven, the valve body closes the connection port 95C and blocks the gas flow to the upper fire burner 26.

  The lid body 55 is fixed to the bottom surface 81 </ b> A side of the flow path main body 81 with a screw. The lid 55 has an L-shaped plate shape and covers the entire opening of the main flow path 82, the first distribution path 91, and the second distribution path 92 formed in a groove shape on the bottom surface 81A. A cork packing 54 is disposed between the lid 55 and the bottom surface 81A. The cork packing 54 is also L-shaped and is smaller than the lid 55 and covers the entire opening of the main flow path 82, the first distribution path 91, and the second distribution path 92. As shown in FIG. 7, the bottom surface 81 </ b> A has an L-shaped portion that surrounds the main flow path 82, the first distribution path 91, and the second distribution path 92 in a slightly concave shape. The external shape of the cork packing 54 is a shape that matches the concave shape of the bottom surface 81A.

  The bottom surface 81A has a notch 81C at the left end. As shown in FIGS. 4 and 5, the cork packing 54 has a protruding portion 54 </ b> A protruding leftward at a portion corresponding to the notch portion 81 </ b> C. When the lid 55 is fixed to the flow channel main body 81 with the cork packing 54 interposed therebetween, the protruding portion 54A protrudes from the notch 81C to the left of the flow channel main body 81. Thereby, at the time of the assembly of the governor apparatus 50, the presence or absence of the assembly | attachment of the cork packing 54 can be confirmed visually. The governor device 50 is attached to the gas stove 1 by assembling the lid 55 to the housing 2 and fixing it with screws. As shown in FIG. 2, since there is a small empty space on the left side of the governor device 50 in the housing 2, the cork packing 54 is present even after the governor device 50 is assembled to the housing 2. Can be visually confirmed.

  As described above, the flow path main body 81 of the gas distribution device 70 is made of, for example, die casting and is formed of one part, and can be formed by injection molding using a mold that forms the upper surface 81B side and the bottom surface 81A side. Since the second flow path portion is provided in a groove shape on the bottom surface 81A, it can be easily formed by a mold that forms the bottom surface 81A side. The first flow path portion has a cylindrical hole shape along the front-rear direction and communicates with a distribution chamber 85 provided at the rear end. Therefore, the distribution chamber 85 and the first flow path portion can be formed by one injection molding together with the second flow path portion by using the core. And if a 1st flow path part and a 2nd flow path part are combined, the gas flow path of a complicated path | route can be formed. Therefore, the flow path main body 81 provided with the lower fire distribution path 86 and the upper fire distribution path 90 can be obtained as one part formed by a mold. Therefore, the gas distribution device 70 can reduce the size of the entire device.

  Since the bypass path 88 provided for bypassing the gas includes the first flow path portion, the flow path body 81 can easily form the bypass path 88. Therefore, the gas distribution device 70 can reduce the size of the entire device.

  The distribution chamber 85 is recessed. By forming the distribution port 85D connected to the distribution chamber 85 in the lower fire distribution path 86 and the upper fire distribution path 90 by the first flow path portion, the flow path main body 81 can form the distribution port 85D and the distribution chamber in molding by a mold. 85 can be manufactured integrally with a core.

  By providing the valve chamber 95 in the middle of the upper fire distribution path 90, the path of the upper fire distribution path 90 is complicated, but by including the first flow path portion and the second flow path portion, the flow path body The portion 81 can easily form the upper fire distribution path 90. Further, the second flow path portion of the first distribution path 91 and the second flow path portion of the second distribution path 92 are adjacent to each other at a position adjacent to the distribution chamber 85 on the side of the main flow path 82. Thus, the arrangement space of the main flow path 82, the first distribution path 91, and the second distribution path 92 in the flow path main body 81 can be saved, and the flow path main body 81 can be downsized.

  Since the bypass path 98 provided for bypassing the gas is composed of the first flow path portion, the flow path body 81 can easily form the bypass path 98. Therefore, the gas distribution device 70 can reduce the size of the entire device.

  The valve chamber 95 is formed with a recess. By configuring the portion connected to the valve chamber 95 in the upper fire distribution channel 90 by the first flow channel portion, the flow channel main body 81 integrally forms the connection portion and the valve chamber 95 by the core in molding by a mold. be able to.

  By providing the arrangement part 61 of the gas governor 60 in the flow path main body 81, the gas governor 60 and the gas distribution device 70 can be integrated. Therefore, the miniaturization of the governor device 50 can be achieved.

  When the introduction port 76 is not provided on the side of the arrangement portion 61 but is formed at a position overlapping the arrangement portion 61, the shape near the introduction port 76 is formed in the gas governor 60 in order to ensure the thickness of the arrangement portion 61. It is necessary to mold according to the shape of the diaphragm. The governor device 50 forms a main flow path 82 in a groove shape by a mold that forms the bottom surface 81A side, and a step 82A that connects the introduction port 76 and the groove bottom in the groove of the main flow path 82 is formed by a mold. It can form easily and the thickness of the arrangement | positioning part 61 can be ensured. Thereby, since the flow-path main-body part 81 and the arrangement | positioning part 61 can be arrange | positioned more closely, the further miniaturization of the governor apparatus 50 can be achieved.

  By reducing the size of the governor device 50, the gas stove 1 can ensure the degree of freedom of the layout in the housing 2.

  In addition, this invention is not limited to the said embodiment, A various change is possible. The arrangement portion 61 and the flow path main body portion 81 are integrally formed as a part of the base body 80, but may be separate. The base body 80 is made of die casting, but may be formed by cutting or the like. The lower fire distribution path 86 is formed in a cylindrical hole shape by a core, but may be formed in a groove shape on the bottom surface 81A. Alternatively, the main flow path 82 and the portion extending in the front-rear direction in the second distribution path 92, that is, the first flow path portion is formed in a cylindrical hole shape by the core, and only the second flow path portion is formed in a groove shape on the bottom surface 81A. May be.

  The bypass passages 88 and 98, the needle valve chambers 87 and 97, and the needle valves 74 and 75 may be omitted. Instead, the solenoid valves 71 and 72 may be valves that can change the degree of opening of the distribution ports 85C and 85D stepwise. The step part 82A of the main channel 82 may not be provided.

  In the above description, the upper surface 81B is an example of the “first surface” in the present invention. The bottom surface 81A is an example of the “second surface” in the present invention. The needle valve 74 is an example of the “first limiting valve” in the present invention. The needle valve chamber 87 is an example of the “first restriction chamber” in the present invention. The bypass path 88 is an example of the “first connection path” in the present invention. The needle valve 75 is an example of the “second limiting valve” in the present invention. The needle valve chamber 97 is an example of the “second restriction chamber” in the present invention. The bypass path 98 is an example of the “second connection path” in the present invention.

DESCRIPTION OF SYMBOLS 1 Gas stove 2 Housing | casing 25 Grill warehouse 26 Upper fire burner 27 Lower fire burner 40 Fuel supply apparatus 45, 46 Gas pipe 50 Governor apparatus 52 Intake port 55 Cover body 60 Gas governor 61 Arrangement part 70 Gas distribution apparatuses 71-73 Solenoid valve 74 , 75 Needle valve 76 Introduction port 77 Upper fire supply port 78 Lower fire supply port 81 Channel body 81A Bottom surface 81B Top surface 82 Main channel 82A Step 85 Distribution chamber 85C, 85D Distribution port 86 Lower flame distribution channel 87, 97 Needle Valve chamber 88, 98 Bypass path 90 Upper fire distribution path 91 First distribution path 92 Second distribution path 95 Valve chamber 95C Connection port

Claims (9)

Gas is supplied to the upper fire burner and the lower fire burner by adjusting the supply pressure of the gas, and the upper fire burner and the lower fire burner for heating the cooking object accommodated in the grill cabinet provided in the casing of the gas stove A gas distribution device of a gas stove that is provided between the gas governor and distributes the gas supplied from the gas governor to the upper fire burner and the lower fire burner,
A flow channel body in which a gas flow channel is formed;
An inlet that is provided on one end of the flow path body and is an inlet for gas supplied from the gas governor;
A main flow channel that is a flow channel extending from the introduction port toward the other end of the flow channel body,
A distribution chamber that is formed with a recess at the other end, communicates with the main channel in the recess, distributes the gas flowing in through the main channel, and discharges the gas from two distribution ports in the recess. When,
Two electromagnetic valves that cover the opening of the distribution chamber and that can open and close the two distribution ports,
A first heating surface that is one of the outer surfaces of the flow path main body, a lower heating supply port that is an outlet for gas supplied to the lower heating burner;
An upper fire supply port which is an outlet of a gas provided on the first surface and supplied to the upper fire burner;
A lower fire distribution path that is a gas flow path extending from one of the two distribution ports toward the lower fire supply port;
Of the two distribution ports, an upper fire distribution channel that is a gas flow path extending from the other distribution port toward the upper fire supply port;
With
The lower fire distribution path and the upper fire distribution path are respectively a first flow path portion that is a flow path section along a first direction in which the main flow path extends, and a flow path along a second direction that intersects the first direction. Formed including at least one channel portion of the second channel portion that is a portion,
The first flow path portion is a flow path formed in a cylindrical hole shape that communicates with the distribution chamber and extends along the first direction in the flow path body.
The second channel portion is formed in a groove shape on the second surface opposite to the first surface of the channel main body, and the groove is opened by a lid body fixed to the second surface. A gas distribution device for a gas stove, characterized in that the flow path is closed. A first restriction chamber provided on the first surface, connected to the lower fire distribution path on the distribution chamber side of the lower fire supply port, and disposed with a first restriction valve capable of passing a certain amount of gas; ,
Connecting the distribution chamber and the first restriction chamber, a first connection path for bypassing the gas from the distribution chamber to the lower fire distribution path while restricting the flow rate of the gas by the first restriction valve;
With
2. The gas stove according to claim 1, wherein the first connection path includes the first flow path portion that extends in a cylindrical shape from the distribution chamber along the first direction, and is connected to the first restriction chamber. Gas distribution device. 3. The gas distribution device of a gas stove according to claim 1, wherein in the lower fire distribution path and the upper fire distribution path, a portion connected to the distribution chamber is configured by the first flow path portion. At the other end, a recess is formed in the side of the second direction of the distribution chamber, and provided in the middle of the upper fire distribution path, and a valve chamber for controlling the gas flow in the upper fire distribution path,
One solenoid valve that covers the opening of the valve chamber and can open and close the connection port with the upper-fire distribution path in the recess;
With
Among the upper fire distribution paths, the first distribution path connecting the distribution chamber and the valve chamber, and the second distribution path connecting the valve chamber and the upper fire supply port are respectively the second flow path. Including parts,
The second flow path part of the first distribution path and the second flow path part of the second distribution path are adjacent to each other at a position adjacent to the distribution chamber on the side of the main flow path. The gas distribution device for a gas stove according to any one of claims 1 to 3, wherein the gas distribution device is formed as described above. A second restriction chamber provided on the first surface, connected to the upper-fire distribution path on the distribution chamber side of the valve chamber, and a second restriction valve arranged to allow a certain amount of gas to pass through;
A second connection path that connects the distribution chamber and the second restriction chamber, and flows the gas from the distribution chamber to the upper fire distribution path while restricting the flow rate of the gas by the second restriction valve;
With
5. The gas stove according to claim 4, wherein the second connection path includes the first flow path portion that extends in a cylindrical shape from the distribution chamber along the first direction, and is connected to the second restriction chamber. Gas distribution device.   6. The gas distribution device of a gas stove according to claim 4, wherein a portion where the upper fire distribution path is connected to the valve chamber is configured by the first flow path portion. A gas distribution device for a gas stove according to any one of claims 1 to 6,
A gas governor that regulates and supplies the pressure of the gas taken in from the outside;
With
The governor characterized in that the flow channel main body has an intake port connected to the inlet and takes in gas from the outside at the one end, and an arrangement portion for arranging the gas governor is integrally provided. apparatus.   The said main flow path is formed in groove shape in said 2nd surface, The step part which connects the said inlet and a groove bottom in step shape was provided in the groove | channel. Governor equipment. In the housing,
A grill to store the food,
An upper fire burner and a lower fire burner for heating an object to be cooked accommodated in the grill;
A governor device according to claim 7 or 8,
Gas pipes connecting the upper fire supply port and the lower fire supply port, and the upper fire burner and the lower fire burner, respectively.
A gas stove characterized by comprising:

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