JP6897962B2 - Gas distribution device, governor device and gas stove of gas stove - Google Patents

Description

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

The gas stove is equipped with a grill for storing the food to be cooked. The grill is equipped with an upper heat burner and a lower heat burner, and heats the food to be cooked with the upper heat and the lower heat. In order to heat the inside of the grill evenly, the gas is distributed to the upper heat burner and the lower heat burner by the gas distributor while being maintained at a constant pressure by the gas governor. For example, Patent Document 1 describes a thermal power adjusting mechanism provided with a gas governor and distributing gas to an upper heat burner and a lower heat burner. Since the thermal power adjustment mechanism controls the flow rate of gas by using a solenoid valve, a gas flow path having a complicated path is formed inside.

Specifically, the thermal power adjusting mechanism of Patent Document 1 includes a first body member having a gas pressure chamber for arranging a gas governor and a second body member having a recess for arranging a solenoid valve. The first body member is provided with a main gas flow path that communicates the gas pressure chamber and the recess, and a branch flow path 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 to realize a complicated and intricate path. The first body member and the second body member are combined and connected in the direction in which the main gas flow path extends, and are integrally assembled by screwing.

JP-A-2015-36595

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. Further, since the gas flow path on the second body member side is opened in a groove shape at 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, packing is also provided on the mating surfaces on the first body side to prevent gas leakage and to form the two packings. It is necessary to provide through holes to ensure gas flow. Further, in order to reinforce the packing, it is necessary to arrange a metal closing plate between the two packings, which increases the number of parts and makes 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 of a gas stove that can be miniaturized.

The gas distribution device of the gas stove according to the first aspect of the present invention has a top heat burner and a bottom heat burner for heating the food to be cooked housed in the grill provided in the housing of the gas stove, and the gas supply pressure. A gas grill provided between the upper heat burner and a gas governor that supplies gas to the lower heat burner by adjusting the pressure, circulates the gas supplied from the gas governor, and distributes the gas to the upper heat burner and the lower heat burner. A gas distribution device, a flow path main body portion in which a gas flow path is formed, an introduction port provided on one end side of the flow path main body portion and an inlet for gas supplied from the gas governor, and the above. A main flow path, which is a flow path extending from the introduction port toward the other end side of the flow path main body, and a recess formed at the other end, communicating with the main flow path in the recess, and the main flow path. A distribution chamber that distributes the gas flowing in through the flow path and can be discharged from each of the two distribution ports in the recess, and a distribution chamber that covers the opening portion of the distribution chamber and can open and close the two distribution ports, respectively. Two electromagnetic valves, a lower fire supply port which is provided on the first surface which is one of the outer surfaces of the flow path main body and is an outlet for gas supplied to the lower fire burner, and a lower fire supply port which is provided on the first surface and is said to be above. An upper fire supply port, which is an outlet for gas supplied to the fire burner, and a lower fire distribution path, which is a gas flow path extending from one of the two distribution ports toward the lower fire supply port. Of the two distribution ports, the upper fire distribution path, which is a gas flow path extending from the other distribution port toward the upper fire supply port, is provided, and the lower fire distribution path and the upper fire distribution path are respectively provided. , At least one of a first flow path portion that is a flow path portion along the first direction in which the main flow path extends and a second flow path portion that is a flow path portion along the second direction that intersects the first direction. The first flow path portion is formed in a tubular hole shape that communicates with the distribution chamber and extends along the first direction in the flow path main body portion. The second flow path portion is formed in a groove shape on the second surface of the flow path main body portion opposite to the first surface, and the groove is formed by a lid fixed to the second surface. The open portion is a closed flow path.

In addition to the configuration of the invention according to claim 1, the gas distribution device for the gas stove according to claim 2 is provided on the first surface, and the lower heat distribution is provided on the distribution chamber side of the lower heat supply port. The first limiting chamber, which is connected to the road and has a first limiting valve through which a certain amount of gas can pass, is connected to the distribution chamber and the first limiting chamber, and the first limiting valve allows the gas to pass through. A first connecting path for bypassing gas from the distribution chamber to the lower heat distribution path while limiting the flow rate is provided, and the first connecting path has a tubular shape along the first direction from the distribution chamber. It comprises the first flow path portion extending to, and is characterized in that it is connected to the first restriction chamber.

In the gas distribution device of the gas stove of the invention according to claim 3, in addition to the configuration of the invention according to claim 1 or 2, the portion connected to the distribution chamber in the lower heat distribution path and the upper fire distribution path is described above. It is characterized in that it is composed of a first flow path portion.

In addition to the configuration of the invention according to any one of claims 1 to 3, the gas distribution device of the gas stove according to the fourth aspect of the invention has a recess in the other end of the distribution chamber on the side of the second direction. A valve chamber formed and provided in the middle of the upper fire distribution passage to control the flow of gas in the upper fire distribution passage, and an opening portion of the valve chamber are covered, and the upper fire distribution passage is formed in a recess. The first distribution path connecting the distribution chamber and the valve chamber, and the valve chamber and the upper fire supply port among the upper fire distribution passages are provided with one electromagnetic valve capable of opening and closing the connection port. Each of the second distribution paths connecting the two distribution 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 described as described above. It is characterized in that it is formed adjacent to each other at a position adjacent to the distribution chamber on the side of the main flow path.

In addition to the configuration of the invention according to claim 4, the gas distribution device of the gas stove of the invention according to claim 5 is provided on the first surface, and is provided in the upper fire distribution path on the distribution chamber side of the valve chamber. A second limiting chamber in which a second limiting valve is connected and a second limiting valve through which a certain amount of gas can pass is connected, the distribution chamber, and the second limiting chamber are connected, and the flow rate of gas is controlled by the second limiting valve. It is provided with a second connecting path for bypassing gas from the distribution chamber to the upper fire distribution path while limiting, and the second connecting path extends from the distribution chamber in a tubular shape along the first direction. It comprises the first flow path portion and is connected to the second restriction chamber.

In the gas distribution device of the gas stove of the invention according to claim 6, in addition to the configuration of the invention according to claim 4 or 5, the portion where the upper fire distribution path is connected to the valve chamber is composed of the first flow path portion. It is characterized by being done.

The governor device of the invention according to claim 7 includes the gas distribution device of the gas stove according to any one of claims 1 to 6 and a gas governor that regulates and supplies the pressure of the gas taken in from the outside. The road main body portion is characterized in that, at one end portion thereof, an intake port connected to the introduction port and taking in gas from the outside is provided, and an arrangement portion for arranging the gas governor is integrally provided.

In the governor device of the invention according to claim 8, in addition to the configuration of the invention according to claim 7, 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. It is characterized in that a step portion for connecting the bottom in a stepped manner is provided.

The gas stove of the invention according to claim 9 has a grille for storing the food to be cooked, an upper heat burner and a lower heat burner for heating the food to be cooked in the grill, and claim 7 or The governor device according to No. 8 is provided with a gas pipe for connecting the upper fire supply port and the lower fire supply port, 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-cast and is composed of one part, and a mold forming the first surface side and the second surface side is used. 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 forming the second surface side. Further, the first flow path portion has a tubular hole shape along the first direction and communicates with the distribution chamber provided at the other end. Therefore, the distribution chamber and the first flow path portion can be formed by one injection molding together with the second flow path portion by using the core. Then, by combining the first flow path portion and the second flow path portion, a gas flow path having a complicated path can be formed. Therefore, the flow path main body portion provided with the lower heat distribution path and the upper fire distribution path can be obtained as one component 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 according to claim 1, the first connecting path provided for bypassing the gas is composed of the first flow path portion, so that the flow The road body can easily form a first connecting 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 as a recess. By forming the part connecting the lower heat distribution path and the upper heat distribution path with the distribution chamber by the first flow path part, the flow path main body part is integrally manufactured by the core in the connection part and the distribution chamber 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, a valve chamber is provided in the middle of the upper heat distribution path to distribute the upper heat. Although the path of the path is complicated, the flow path main body portion 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 space for arranging 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 according to claim 5, in addition to the effect of the invention according to claim 4, the second connecting path provided for bypassing the gas is composed of the first flow path portion, so that the flow The road body can easily form a second connecting 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 6, in addition to the effect of the invention according to claim 4 or 5, the valve chamber is formed as a recess. By forming the portion connected to the valve chamber in the upper fire distribution path by the first flow path portion, the flow path main body portion can be integrally manufactured by the core in the connection portion and the valve chamber in the molding by the 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 a gas governor arrangement portion in the flow path main body portion. be able to. Therefore, the governor device can be miniaturized.

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 at a position overlapping the arrangement portion instead of being provided on the side of the arrangement portion, the introduction port is arranged. In order to secure the wall thickness of the part, it is necessary to shape the shape near the introduction port according to the shape of the diaphragm of the gas governor. In the governor device, the main flow path is formed in a groove shape with a mold forming the second surface side, so that the step portion connecting the introduction port and the groove bottom in the groove of the main flow path can be easily formed by the mold. It can be formed and the wall thickness of the arrangement portion can be secured. As a result, the flow path main body portion and the arrangement portion can be arranged closer to each other, so that the governor device can be further miniaturized.

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 secure the degree of freedom in the arrangement layout in the housing.

The present invention may arbitrarily combine the matters specifying the invention according to claims 1 to 9.

It is a perspective view of the gas stove 1. It is a top view of the gas stove 1 which removed the top plate 3 and the right burner 4. It is a figure which shows the flow path structure of the gas supplied to the grill device 20. It is a perspective view of the governor device 50. It is an exploded perspective view of the governor device 50. It is a perspective view which looked at the substrate 80 from the rear diagonally upper left side. It is a perspective view which looked at the substrate 80 from the front diagonally right lower side. It is a top view of the substrate 80. It is a bottom view of the substrate 80. It is a rear view of the substrate 80.

Hereinafter, embodiments of the present invention will be described. Unless otherwise specified, the structure of the device described below is not intended to be limited thereto, but is merely an example of explanation. The drawings are used to illustrate the technical features that can be adopted by the present invention. In the following description, the left and right, front and 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 upper part of the housing 2 is open, and the top plate 3 is installed in the opening portion. In the top plate 3, a right burner 4 is provided on the front right side, a left burner 5 is provided on the front left side, and a back burner 6 is provided on the back side of the center. 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 at substantially the center of the front surface of the gas stove 1. The grill door 8 opens and closes the front opening portion of the grill storage 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 front view are provided side by side in the horizontal direction. In the area on the left side of the grill door 8, two operation knobs 13 and 14 having the same shape are provided side by side at 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 fire power of the right burner 4, the upper fire burner 26 and the lower fire burner 27 (see FIG. 3) in the grill chamber 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 a right burner 4, a left burner 5, a back burner 6, and four fuel supply devices for supplying gas to the upper heat burner 26 and the lower heat burner 27. Among them, the fuel supply device 30 (see FIG. 2) that supplies 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 ignites and extinguishes the right burner 4 and adjusts 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 pressing the front surface of the operation knob 11 backward and pushing it to the back side of the front surface of the gas stove 1.

The push-push mechanism uses a known cam mechanism to alternately move the operation knob 11 to a standby position and an operation position each time a push operation is performed, and keeps the main valve in an open state or a closed state according to each position. .. The standby position is a position where the tip 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 closed and the fuel supply device 30 shuts off the gas supply to the right burner 4. The operation position is a position where the tip surface of the operation knob 11 projects forward from the standby position. When in the operating position, the main valve is open and the fuel supply device 30 is ready to supply gas to the right burner 4. When in the operating position, the operating knob 11 is rotatable (rotatable) about 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 it about an axis in the front-rear direction. The gas flow rate adjusting cam moves a flow rate adjusting valve (not shown) according to a rotation operation to adjust the flow rate of gas supplied to the right burner 4. The safety valve is an electromagnetically operated valve that is elastically urged to close the gas flow path. Since the 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, description thereof will be omitted. The operation knobs 13 and 14 are similarly attached to the front end 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, but includes a flow rate adjusting cam. It does not have a flow control valve. 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. Further, the safety valve 41 is opened by pushing the operation knob 12, and is maintained in the open state by energization from the control device (not shown) of the gas stove 1. Further, when the control device stops energizing due to 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 the governor device 50 (see FIG. 4) described later.

Further, the fuel supply device 40 has a plurality of (two in the present embodiment) microswitches (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 microswitch according to the rotation 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 microswitches, and supplies the gas to the upper heat burner 26 and the lower heat burner 27.

With reference to FIG. 3, the configuration of the flow path for supplying gas to the grill device 20 will be described. The upper heat burner 26 and the lower heat burner 27 provided in the grill chamber 25 of the grill device 20 burn gas supplied from the outside via 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 in the open state.

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 distribution device 70. The gas governor 60 regulates the supply pressure of the gas supplied from the fuel supply device 40 and supplies the gas to the gas distribution device 70.

The gas distribution device 70 distributes the gas regulated by the gas governor 60 to the upper heat burner 26 and the lower heat burner 27. The governor device 50, the upper heat burner 26, and the lower heat burner 27 are connected by a gas pipe 45 and a gas pipe 46, respectively. A solenoid valve 71 and a needle valve 74 are provided in the flow path for distributing the gas to the lower heat burner 27. The solenoid valve 71 is driven according to the combination of the on / off states of the microswitches of the fuel supply device 40, and opens and closes the flow path of the gas flowing through the lower heat burner 27. The needle valve 74 is provided in a flow path that bypasses the solenoid valve 71. Therefore, even if the solenoid valve 71 closes the gas flow path, the gas passes through the bypass flow path via the needle valve 74 and is circulated to the lower heat 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 solenoid valve 71.

Solenoid valves 72 and 73 and needle valves 75 are provided in the flow path for distributing the gas to the upper fire burner 26. The solenoid valve 72 and the solenoid valve 73 are arranged in series. The solenoid valve 72 is driven according to the combination of the on / off states of the microswitches of the fuel supply device 40, and opens and closes the flow path of the gas flowing through the top heat burner 26. The needle valve 75 is provided in a flow path that bypasses the solenoid valve 72. Therefore, even if the solenoid valve 72 closes the gas flow path, the gas passes through the bypass flow path via the needle valve 75 and is circulated to the upper fire burner 26. The flow rate of gas passing through the bypass flow path via the needle valve 75 is smaller than the flow rate of gas passing through the flow path via the solenoid valve 72. Further, the solenoid valve 73 is driven in accordance with an instruction from the 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.

In this way, the governor device 50 switches the driving states of the three solenoid valves 71 and 72 corresponding to the microswitches, and adjusts the thermal powers of the upper heat burner 26 and the lower heat burner 27, respectively. The solenoid valve 73 is controlled to an open state when the thermal powers of the upper heat burner 26 and the lower heat burner 27 are adjusted by rotating the operation knob 12. The upper heat burner 26 burns on high heat when the solenoid valve 72 is in the open state, and burns on low heat when the solenoid valve 72 is in the closed state. The lower heat burner 27 burns on high heat when the solenoid valve 71 is in the open state, and burns on low heat when the solenoid valve 71 is in the closed state. 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 heat burner 26 and the lower heat burner 27 with low heat or high heat. .. When the cooking mode suitable for cooking is set by extinguishing the top heat burner 26 based on the user's operation and preventing the surface from being scorched by the top heat, the control device closes the solenoid valves 71 to 73. .. As a result, the upper fire burner 26 can be extinguished and the lower fire burner 27 can be burned on low heat.

Next, the structure of the governor device 50 will be described with reference to FIGS. 4 to 10. As shown in FIGS. 4 and 5, the governor device 50 is a device in which the gas governor 60 and the gas distribution device 70 are integrally formed. The governor device 50 includes a gas governor 60, an arrangement portion 61, a gas distribution device 70, a fastener 53, and a gas pipe 51. The gas distribution device 70 includes a flow path main body 81, solenoid valves 71 to 73, fixing brackets 56 and 57, packings 58 and 59, needle valves 74 and 75, cork packing 54, and a lid 55. The arrangement portion 61 and the flow path main body portion 81 are integrally molded as the base 80.

First, the structure of the substrate 80 will be described. As shown in FIGS. 6 to 10, the substrate 80 is a so-called die cast formed by press-fitting a molten metal (for example, aluminum or an aluminum alloy) into a mold divided in the vertical direction. As described above, the substrate 80 has an arrangement portion 61 and a flow path main body portion 81. The arrangement portion 61 is provided on the front side of the flow path main body portion 81. The right end of the substrate 80 is formed by aligning the right end of the flow path main body 81 and the arrangement portion 61 in a plan view (see FIG. 8), and the left end is formed by aligning the right end of the flow path main body 81 with the arrangement portion 61. Is formed large. In FIGS. 6 to 9, the flow of gas flowing in the flow path main body 81 is indicated by a thick line (solid line or dotted line), and the direction of gas flow is indicated by an arrow.

The arrangement portion 61 is a portion to which the gas governor 60 is assembled. Since the gas governor 60 is known, detailed description thereof will be omitted, but a spring, a valve body, and a diaphragm (not shown) are provided inside. The valve body is pressed in the direction of opening the valve by the urging of the spring. The diaphragm moves the valve body in the direction of closing 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 on the upper surface side of the substrate 80 in a circular concave shape according to the shape of the diaphragm. An intake port 52 for taking in gas supplied from the fuel supply device 40 via the gas pipe 51 is formed on the left portion of the arrangement portion 61. The intake port 52 communicates with the vertical hole 62 in which the valve body is arranged in the arrangement portion 61. Further, an introduction port 76 communicating with the flow path main body 81 is formed at a portion of the arrangement portion 61 where the diaphragm is arranged.

The flow path main body 81 has a main flow path 82. The main flow path 82 is connected to the introduction port 76 and extends straight rearward from the introduction port 76 toward the rear end of the flow path main body 81. Of the gas flow paths of the flow path main body 81, a portion extending in the same front-rear direction as the main flow path 82 is referred to as a “first flow path portion” for convenience. The main flow path 82 is formed in a groove shape that opens at the bottom surface 81A of the flow path main body 81. The front end portion of the main flow path 82 overlaps the arrangement portion 61 in a plan view. Since the arrangement portion 61 is formed with a recess, the groove inner bottom portion at the front end portion of the main flow path 82 is close to the concave inner bottom portion of the arrangement portion 61 in the vertical direction. In order to secure the wall thickness between the bottom of the groove and the bottom of the recess, a step 82A having a stepped bottom of the groove is provided at the front end of the main flow path 82. The uppermost stage of the step portion 82A is located in the groove, and the introduction port 76 is opened at the uppermost stage of the step portion 82A and communicates with 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 path main body 81. The distribution chamber 85 is formed in a concave shape having an opening on the rear side and a recess toward the front. The opening portion 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 from the rear to the front during molding by the mold. Valve bodies (not shown) of solenoid valves 71 and 72, which will be described later, are arranged in the distribution chamber 85. A groove 85B for arranging the annular packing 58 (see FIG. 5) is formed around the opening. The rear end of the main flow path 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 flow path 82 communicate with each other via the hole 85A.

At the bottom of the distribution chamber 85, distribution ports 85C and 85D are opened on the right side and the left side of the hole 85A, respectively. Further, at the bottom of the distribution chamber 85, the bypass port 85E opens above the distribution port 85C, and the bypass port 85F opens above the distribution port 85D.

The distribution port 85C on the right side is connected to the lower heat distribution path 86. The lower heat distribution path 86 is a gas flow path connecting the distribution chamber 85 and the lower heat supply port 78. The lower fire distribution path 86 extends straight forward from the distribution port 85C in a cylindrical shape (see FIG. 6). The lower heat distribution path 86 includes a first flow path portion. The front end portion of the lower heat distribution path 86 is located substantially at the center of the substrate 80 (front portion of the flow path main body portion 81) in the front-rear direction. The distribution port 85C and the lower heat distribution path 86 are formed by the core forming the distribution chamber 85.

A lower fire supply port 78 is provided on the upper surface 81B 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 portion of the lower fire distribution path 86 is opened in the center of the bottom portion. 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 path 88 is a flat tubular flow path 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 heat supply port 78 and the distribution chamber 85. The needle valve chamber 87 is formed in a circular recess shape that is long vertically on the upper surface 81B, and a hole 87A that communicates with the central portion of the lower fire distribution path 86 is opened in the center of the bottom portion. A hole 87B (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 passage 88 and the needle valve chamber 87 form a flow path that connects the distribution chamber 85 and the lower heat distribution passage 86 without passing through the distribution port 85C.

The distribution chamber 85 communicates with the upper fire distribution path 90 via the distribution port 85D on the left side. 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 connecting 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 connects to the distribution port 85D at the right end. Of the gas flow paths of the flow path main body 81, a portion extending in the left-right direction intersecting the main flow path 82 is referred to as a “second flow path portion” for convenience. The first distribution path 91 is composed of a second flow path portion. 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 provided so as to be 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 of the flow path main body 81. The valve chamber 95 is formed in a concave shape with the rear side open and recessed toward the front. The opening portion of the valve chamber 95 has a circular shape (see FIG. 10). The valve chamber 95 is formed by the same core as the distribution chamber 85. A valve body (not shown) of the solenoid valve 73, which will be described later, is arranged in the valve chamber 95. A groove 95B for arranging the annular packing 59 (see FIG. 5) is formed around the opening. The left end 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 right end of the bottom of the valve chamber 95, and the valve chamber 95 and the first distribution path 91 communicate with each other via the hole 95A. Further, a connection port 95C opens in the center of the bottom of the valve chamber 95.

The valve chamber 95 communicates with the second distribution path 92 via the connection port 95C. The connection port 95C 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 of the second distribution path 92 is located on the left side of the left end of the first distribution path 91. The second distribution path 92 extends forward from the rear end, bends diagonally, and further extends to the right. The portion extending forward of the second distribution path 92 is the first flow path portion extending parallel to the main flow path 82. The portion extending to the right of the second distribution path 92 is the second flow path portion, which is arranged in parallel with the first distribution path 91 on the front side of the first distribution path 91. As described above, the upper fire distribution path 90 is formed including the first flow path portion and the second flow path portion.

The right end of the second distribution path 92 is located substantially in the center of the substrate 80 (front of the flow path main body 81) in the front-rear direction and the left-right direction, is on the left side of the main flow path 82, and is on the right end of the first distribution path 91. Located on the front side of the part. The right end of the second distribution path 92 and the front end of the lower fire distribution path 86 are located on opposite sides in the left-right direction with the main flow path 82 in between. The second distribution path 92 is formed in a groove shape that opens at the bottom surface 81A. The second distribution path 92 is provided so as to be separated from the main flow path 82 and the first distribution path 91 by a wall portion. The hole 92A that opens in the bottom of the groove at the bent portion of the second distribution path 92 is a service port used during manufacturing and maintenance of the gas stove 1, and is usually sealed with a gasket and screwing.

An upper fire supply port 77 is provided on the upper surface 81B of the flow path main body 81 and 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 in the center of the bottom. The hole 77A in the second distribution path 92 opens to the bottom of the groove at the right end of the second distribution path 92. A gas pipe 45 (see FIG. 2) for sending gas to the upper fire burner 26 is connected to the upper fire supply port 77.

The bypass port 85F in the distribution chamber 85 is connected to the bypass path 98. The bypass path 98 is a flat tubular flow path 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 top heat supply port 77 and the distribution chamber 85. The needle valve chamber 97 is formed in a vertically long circular concave shape on the upper surface 81B, and a hole 97A (see FIG. 8) communicating with the right end of the first distribution path 91 is opened in the center of the bottom. A hole 97B (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 passage 98 and the needle valve chamber 97 form a flow path that connects the distribution chamber 85 and the first distribution passage 91 without passing through the distribution port 85D.

The governor device 50 is completed by assembling various parts to the substrate 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 substrate 80 with screws. A gas pipe 51 is connected to the intake port 52, and a fastener 53 for preventing disconnection 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 74A is mounted on 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 part of the needle valve 74 and seals the hole 87A that communicates the needle valve chamber 87 and the lower heat distribution path 86. A screw 74C is fastened to the side of the needle valve 74. The screw 74C presses the upper part of the needle valve 74 with the screw head and is fixed to the needle valve chamber 87. The needle valve 74 opens a horizontal hole 74D on the side surface between the O-ring 74A and the O-ring 74B, and opens a narrow hole (not shown) on the lower surface that passes through the inside of the O-ring 74B and communicates with the horizontal hole 74D. The lateral hole 74D faces the hole 87B of the bypass path 88 in the needle valve chamber 87, and the small hole faces the lower fire distribution path 86 via the hole 87A. Therefore, the gas flowing from the distribution chamber 85 through the bypass passage 88 and into the needle valve chamber 87 can pass through the horizontal hole 74D and the narrow hole and flow to the lower heat distribution passage 86. The needle valve 74 does not shut off the gas flowing through the needle valve chamber 87, but the flow rate of the gas can be limited by the small holes.

The needle valve 75 has the same configuration as the needle valve 74, and includes two O-rings 75A and 75B. The O-ring 75A is mounted on the upper part 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 mounted on the lower part of the needle valve 75 and seals the hole 97A that communicates the needle valve chamber 97 with the first distribution path 91. The screw 75C fastened to the side of the needle valve 75 presses the upper portion of the needle valve 75 inserted into the needle valve chamber 97 with a screw head. The needle valve 75 opens a horizontal hole 75D on the side surface between the O-ring 75A and the O-ring 75B, and opens a narrow hole (not shown) on the lower surface that passes through the inside of the O-ring 75B and communicates with the horizontal hole 75D. The lateral hole 75D faces the hole 97B of the bypass path 98 in the needle valve chamber 97, and the small hole faces the first distribution path 91 via the hole 97A. Therefore, the gas flowing from the distribution chamber 85 through the bypass passage 98 and into the needle valve chamber 97 can pass through the horizontal hole 75D and the narrow hole and flow to the first distribution passage 91. The needle valve 75 does not shut off the gas flowing through the needle valve chamber 97, but the flow rate of the gas can be limited by the small holes.

The solenoid 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 distribution chamber 85 is sealed by covering the opening portion with the fixing bracket 56 and the packing 58. The valve bodies of the solenoid valves 71 and 72 are arranged behind the distribution ports 85C and 85D in the distribution chamber 85, respectively. When the solenoid valves 71 and 72 are driven, the valve body closes the distribution ports 85C and 85D, respectively, and limits the gas flow path to the flow path via the bypass paths 88 and 98, respectively.

The solenoid valve 73 is held by the fixing metal fitting 57 and is fixed to the rear portion of the valve chamber 95 via the packing 59. The valve chamber 95 is sealed by covering the opening portion with the fixing bracket 57 and the packing 59. The valve body of the solenoid valve 73 is arranged in the valve chamber 95 behind the connection port 95C. When the solenoid valve 73 is driven, the valve body closes the connection port 95C and shuts off the gas flow to the upper fire burner 26.

The lid 55 is fixed to the bottom surface 81A side of the flow path main body 81 with screws. The lid 55 has an L-shaped plate shape and covers the entire opening portion 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 arranged between the lid 55 and the bottom surface 81A. The cork packing 54 is also L-shaped and is formed smaller than the lid 55, and covers the entire opening portion 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 81A 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 outer 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 54A protruding to the left at a portion corresponding to the cutout portion 81C. When the lid 55 is fixed to the flow path 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 path main body 81. Thereby, when assembling the governor device 50, it is possible to visually confirm whether or not the cork packing 54 is assembled. The governor device 50 is attached to the gas stove 1 by assembling the lid 55 to the housing 2 and fixing the lid 55 with screws. As shown in FIG. 2, since a slight empty space is provided on the left side of the governor device 50 in the housing 2, the presence or absence of the cork packing 54 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-cast and is composed of one component, and can be formed by injection molding using a mold that forms the upper surface 81B side and the lower surface 81A side. Since the second flow path portion is provided in the bottom surface 81A in a groove shape, it can be easily formed by the mold forming the bottom surface 81A side. Further, the first flow path portion has a tubular hole shape along the front-rear direction and communicates with the distribution chamber 85 provided at the rear end portion. 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 a core. Then, by combining the first flow path portion and the second flow path portion, a gas flow path having a complicated path can be formed. Therefore, the flow path main body 81 provided with the lower heat distribution path 86 and the upper fire distribution path 90 can be obtained as one component formed by the 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 is composed of the first flow path portion, the flow path main body portion 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 formed with a recess. By forming the distribution port 85D connected to the distribution chamber 85 in the lower heat distribution path 86 and the upper heat distribution path 90 by the first flow path portion, the flow path main body 81 can be formed by molding with the distribution port 85D and the distribution chamber. The 85 can be integrally manufactured by the 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 becomes complicated, but by including the first flow path portion and the second flow path portion, the flow path main 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. Since it is formed, the space for arranging 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 main body portion 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 forming the portion of the upper fire distribution path 90 that connects to the valve chamber 95 with the first flow path portion, the flow path main body portion 81 integrally manufactures the connection portion and the valve chamber 95 with a core in molding by a mold. be able to.

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

When the introduction port 76 is formed at a position overlapping the arrangement portion 61 instead of being provided on the side of the arrangement portion 61, in order to secure the wall thickness of the arrangement portion 61, the shape in the vicinity of the introduction port 76 is changed to the gas governor 60. It is necessary to mold it according to the shape of the diaphragm. In the governor device 50, the main flow path 82 is formed in a groove shape with a mold forming the bottom surface 81A side, so that a step portion 82A connecting the introduction port 76 and the groove bottom is formed in the groove of the main flow path 82 by a mold. It can be easily formed and the wall thickness of the arrangement portion 61 can be secured. As a result, the flow path main body portion 81 and the arrangement portion 61 can be arranged closer to each other, so that the governor device 50 can be further miniaturized.

By downsizing the governor device 50, the gas stove 1 can secure the degree of freedom in the arrangement layout in the housing 2.

The present invention is not limited to the above embodiment, and various modifications can be made. Although the arrangement portion 61 and the flow path main body portion 81 are integrally formed as a part of the substrate 80, they may be separate bodies. Although the substrate 80 is made of die-cast, it may be formed by cutting or the like. The lower fire distribution path 86 is formed in a tubular hole shape by the 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 tubular hole shape by a core, and only the second flow path portion is formed in a groove shape on the bottom surface 81A. You may.

Bypass paths 88 and 98, needle valve chambers 87 and 97, and needle valves 74 and 75 may be omitted. Alternatively, the solenoid valves 71 and 72 may be valves that can change the degree of opening of the distribution ports 85C and 85D in a stepwise manner. The step portion 82A of the main flow path 82 may not be provided.

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

1 Gas stove 2 Housing 25 Grill storage 26 Top fire burner 27 Bottom fire burner 40 Fuel supply device 45, 46 Gas pipe 50 Governor device 52 Intake port 55 Lid 60 Gas governor 61 Arrangement 70 Gas distribution device 71-73 Electromagnetic valve 74 , 75 Needle valve 76 Introductory port 77 Top fire supply port 78 Bottom fire supply port 81 Flow path body 81A Bottom 81B Top surface 82 Main flow path 82A Step 85 Distribution chamber 85C, 85D Distribution port 86 Bottom heat distribution path 87, 97 Needle Valve chamber 88, 98 Bypass path 90 Top fire distribution path 91 First distribution path 92 Second distribution path 95 Valve room 95C connection port

Claims (9)

The upper heat burner and the lower heat burner that heat the food to be cooked housed in the grill provided in the housing of the gas stove, and the gas supply pressure is adjusted to supply the gas to the upper heat burner and the lower heat burner. It is a gas distribution device of a gas stove provided between the gas governor, which circulates the gas supplied from the gas governor and distributes the gas to the upper heat burner and the lower heat burner.
The flow path main body where the gas flow path is formed and
An introduction port provided on one end side of the flow path main body and an inlet for gas supplied from the gas governor.
The main flow path, which is a flow path extending from the introduction port toward the other end side of the flow path main body, and
A distribution chamber in which a recess is formed at the other end, communicates with the main flow path in the recess, distributes gas flowing through the main flow path, and can be discharged from each of the two distribution ports in the recess. When,
Two solenoid valves that cover the opening of the distribution chamber and can open and close the two distribution ports, respectively.
A lower fire supply port provided on the first surface, which is one of the outer surfaces of the flow path main body, and an outlet for gas supplied to the lower fire burner.
An upper fire supply port provided on the first surface and an outlet for gas supplied to the upper fire burner,
Of the two distribution ports, a lower heat distribution path, which is a gas flow path extending from one of the distribution ports toward the lower heat supply port, and a lower heat distribution port.
Of the two distribution ports, the upper fire distribution path, which is a gas flow path extending from the other distribution port toward the upper fire supply port, and
With
The lower heat distribution path and the upper fire distribution path are a first flow path portion that is a flow path portion along the first direction in which the main flow path extends, and a flow path along the second direction that intersects the first direction, respectively. It is formed to include at least one flow path portion of the second flow path portion which is a portion, and is formed.
The first flow path portion is a flow path formed in a tubular hole shape that communicates with the distribution chamber and extends along the first direction in the flow path main body.
The second flow path portion is formed in a groove shape on the second surface of the flow path main body portion opposite to the first surface, and the groove is opened by a lid fixed to the second surface. A gas distribution device for a gas stove, characterized in that a portion is a closed flow path. A first limiting 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 provided with a first limiting valve through which a certain amount of gas can pass. ,
A first connection path that connects the distribution chamber and the first restriction chamber and allows gas to flow by bypass from the distribution chamber to the lower heat distribution path while limiting the flow rate of gas by the first restriction valve.
With
The gas stove according to claim 1, wherein the first connection path includes the first flow path portion extending from the distribution chamber in a tubular shape along the first direction, and is connected to the first restriction chamber. Gas distributor. The gas distribution device for a gas stove according to claim 1 or 2, wherein a portion of the lower heat distribution path and the upper fire distribution path connected to the distribution chamber is composed of the first flow path portion. At the other end, a valve chamber having a recess formed on the side of the distribution chamber in the second direction and provided in the middle of the upper fire distribution passage to control gas flow in the upper fire distribution passage.
A 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
Of 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 the second flow paths, respectively. Including the part
The second flow path portion of the first distribution path and the second flow path portion 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 of the gas stove according to any one of claims 1 to 3, wherein the gas distribution device is formed. A second limiting chamber provided on the first surface, connected to the upper fire distribution passage on the distribution chamber side of the valve chamber, and provided with a second limiting valve through which a certain amount of gas can pass.
A second connecting path that connects the distribution chamber and the second limiting chamber and allows gas to flow by bypass from the distribution chamber to the upper fire distribution path while limiting the flow rate of gas by the second limiting valve.
With
The gas stove according to claim 4, wherein the second connection path includes the first flow path portion extending from the distribution chamber in a tubular shape along the first direction, and is connected to the second restriction chamber. Gas distributor. The gas distribution device for a gas stove according to claim 4 or 5, wherein the portion where the upper fire distribution path is connected to the valve chamber is composed of the first flow path portion. The gas distribution device for the gas stove according to any one of claims 1 to 6.
A gas governor that regulates and supplies the pressure of gas taken in from the outside,
With
The governor is characterized in that the flow path main body portion has an intake port connected to the introduction port and takes in gas from the outside at one end portion thereof, and an arrangement portion for arranging the gas governor is integrally provided. apparatus. The seventh aspect of claim 7, wherein the main flow path is formed in a groove shape on the second surface, and a step portion for connecting the introduction port and the groove bottom in a stepped manner is provided in the groove. Governor device. In the housing,
A grill that stores food to be cooked
An upper heat burner and a lower heat burner for heating the food to be cooked stored in the grill.
The governor device according to claim 7 or 8.
A gas pipe 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 being equipped with.

Images