JP4912978B2 - Valve unit device - Google Patents

Valve unit device Download PDF

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JP4912978B2
JP4912978B2 JP2007209280A JP2007209280A JP4912978B2 JP 4912978 B2 JP4912978 B2 JP 4912978B2 JP 2007209280 A JP2007209280 A JP 2007209280A JP 2007209280 A JP2007209280 A JP 2007209280A JP 4912978 B2 JP4912978 B2 JP 4912978B2
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gas
valve
valve unit
passage
machined
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JP2009041700A (en
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雄一 林
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Rinnai Corp
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Description

本発明は、電磁安全弁が各々設けられる複数のガス通路が並列に設けられた鋳造製のバルブユニット本体を備えたバルブユニット装置に関する。   The present invention relates to a valve unit device including a cast valve unit body in which a plurality of gas passages each provided with an electromagnetic safety valve are provided in parallel.

ガスコンロのように複数のガスバーナが設けられたガス器具では、各ガスバーナにガスを供給するガス供給路を設け、そのガス供給路の各々に火力調節部を設けている。この火力調節部は１個のバルブユニット本体に取り付けられ一体となってユニット化されている（例えば、特許文献１参照）。
特開２００２−３１３３６号公報（図３，図５） In a gas appliance provided with a plurality of gas burners such as a gas stove, a gas supply path for supplying gas to each gas burner is provided, and a thermal power control unit is provided in each of the gas supply paths. This thermal power control unit is attached to one valve unit main body and integrated into a unit (for example, see Patent Document 1).
JP 2002-31336 A (FIGS. 3 and 5)

上記特許文献に記載されたものでは、バルブユニット本体は器体と示されており、具体的にどのように成形するかは示されていないが、図からブロック材を機械加工して成形したように推察することができる。仮にこのようにブロック材から機械加工によりバルブユニット本体を形成すると、コストが高くなると共に形状が大型化するという不具合が生じる。   In the above-mentioned patent document, the valve unit main body is shown as a container, and it is not shown how to form it specifically, but it seems that the block material was machined and formed from the figure. Can be guessed. If the valve unit main body is formed from the block material by machining in this way, there arises a problem that the cost increases and the shape increases.

そこで、このようなバルブユニット本体を形成する際には鋳造により形成されることが一般的ではなるが、鋳造により形成すると、肉厚部分にひけが生じ、内部に巣が発生するおそれが生じる。そのままでは巣は内部に隠れているが、機械加工すると巣が表面に表れる場合があり、特にガス通路内に巣が露出するとガス漏れのおそれが生じる。   Therefore, when such a valve unit body is formed, it is generally formed by casting. However, if formed by casting, sinking occurs in the thick portion and a nest may be generated inside. The nest is hidden inside as it is, but the nest may appear on the surface when machined. Especially, when the nest is exposed in the gas passage, there is a risk of gas leakage.

一方、ガスバーナでガスが燃焼中に失火したような場合に失火したガスバーナへのガスの供給のみを停止させるため、各火力調節部の上流側に各々電磁安全弁が設けられている。電磁安全弁の弁体は弁座に着座して閉弁状態となるが、樹脂製の弁座部材を用いる場合には弁座部材とガス通路内面との間にシール部材を設けるため、ガス通路における弁座部材に設けたシール部材が配設される部分は機械加工する必要がある。 On the other hand, in order to stop only the supply of gas to the misfired gas burner when the gas is misfired in the gas burner, an electromagnetic safety valve is provided on the upstream side of each thermal power control unit. Because the valve body of the electromagnetic safety valve is a closed seated on the valve seat, in the case of using a resin valve seat member which is provided a sealing member between the valve seat member and the gas passage inner surface, the gas passage The portion where the seal member provided on the valve seat member is disposed needs to be machined.

この機械加工する部分に上記の巣が発生するとガス漏れのおそれが生じるので、この機械加工する部分には巣が発生しないような構造が望まれる。   If the nest is generated in the machined portion, there is a risk of gas leakage. Therefore, a structure in which no nest is generated in the machined portion is desired.

そこで本発明は、上記の問題点に鑑み、ガス通路における弁座部材に設けたシール部材が配設される部分に巣が発生するおそれのないバルブユニット装置を提供することを課題とする。 In view of the above problems, an object of the present invention is to provide a valve unit device in which a nest does not occur at a portion where a seal member provided on a valve seat member in a gas passage is disposed .

上記課題を解決するために本発明によるバルブユニット装置は、電磁安全弁が各々設けられる複数のガス通路が並列に設けられた鋳造製のバルブユニット本体を備え、ガス通路の内周面であって、ガス通路における弁座部材に設けたシール部材が配設される部分を機械加工すると共に、各ガス通路にガスを供給する分配通路を、バルブユニット本体の表面に形成したリブ状の壁部で囲んで構成したバルブユニット装置であって、上記リブ状の壁部を、上記機械加工する部分に重ならないように設けたことを特徴とする。 In order to solve the above problems, a valve unit device according to the present invention includes a cast valve unit body in which a plurality of gas passages each provided with an electromagnetic safety valve are provided in parallel, and is an inner peripheral surface of the gas passage, The portion of the gas passage where the seal member provided on the valve seat member is machined is machined, and the distribution passage for supplying gas to each gas passage is surrounded by a rib-like wall formed on the surface of the valve unit body. In the valve unit device configured as described above, the rib-shaped wall portion is provided so as not to overlap the machined portion.

壁部がリブ状であれば、壁部の高さ方向の厚みが他の部分より厚くなるので、壁部を設けた位置に巣が発生しやすくなる。一方、ガス通路における弁座部材に設けたシール部材が配設される部分は機械加工されるので、この機械加工される部分と壁部とが重ならないことが望ましい。 If the wall portion is rib-shaped, the thickness of the wall portion in the height direction is thicker than other portions, so that a nest is likely to occur at the position where the wall portion is provided. On the other hand , since the portion where the seal member provided on the valve seat member in the gas passage is disposed is machined, it is desirable that the machined portion and the wall portion do not overlap.

以上の説明から明らかなように、本発明は、機械加工される部分と壁部とが重ならないようにしたので、機械加工される部分に巣が発生することが無く、従って、機械加工しても巣が原因となるガスの漏出を防止することができる。   As is apparent from the above description, the present invention prevents the machined portion and the wall portion from overlapping each other, so that no nest is generated in the machined portion. The leakage of gas caused by the nest can be prevented.

図１を参照して、１は本発明によるガスコンロであり、天板１１には大バーナ１１ａ、中バーナ１１ｂ、小バーナ１１ｃの３つのガスバーナが設けられている。また、このガスコンロ１にはグリル１２が設けられており、図示しないがグリル１２内には上下１対のガスバーナが設けられている。   Referring to FIG. 1, reference numeral 1 denotes a gas stove according to the present invention, and a top plate 11 is provided with three gas burners, a large burner 11a, a middle burner 11b, and a small burner 11c. Further, the gas stove 1 is provided with a grill 12, and although not shown, a pair of upper and lower gas burners are provided in the grill 12.

図２を参照して、これら各バーナにガスを供給すると共にガスの供給量を個別に制御して火力を調節する電動ガスバルブユニットが設けられている。この電動ガスバルブユニットのバルブユニット本体２にはガスが流入するする流入口２１が設けられ、各ガスバーナにガスを供給する供給口２ａ、２ｂ、２ｃ、２ｄが設けられている。   Referring to FIG. 2, there is provided an electric gas valve unit that supplies gas to each of these burners and adjusts the heating power by individually controlling the gas supply amount. The valve unit main body 2 of the electric gas valve unit is provided with an inlet 21 through which gas flows, and supply ports 2a, 2b, 2c, and 2d that supply gas to each gas burner.

流入口２１の下流には元弁２２が設けられており、この元弁２２が閉弁すると各バーナへのガスの供給が停止される。また、元弁２２を通過したガスは２本の分配通路２０ａ，２０ｂに分岐される。一方の分配通路２０ａは大バーナ１１ａ、中バーナ１１ｂ、小バーナ１１ｃにガスを供給するものであり、他方の分配通路２０ｂはグリル庫１２のガスバーナにガスを供給するものである。両分配通路２０ａ，２０ｂに連なる各ガス供給路には各々バルブ装置３ａ、３ｂ、３ｃ、３ｄが介設されている。各バルブ装置にはバーナの点火状態で開弁保持される電磁安全弁３１と、ガスの供給量を増減して火力を調節する火力調節部３２とが内蔵されている。この火力調節部３２はモータ４によって駆動されるように構成されている。なお、バルブ装置３ｄにはガバナ３０が設けられている。   A main valve 22 is provided downstream of the inlet 21, and when the main valve 22 is closed, the supply of gas to each burner is stopped. Further, the gas that has passed through the main valve 22 is branched into two distribution passages 20a and 20b. One distribution passage 20a supplies gas to the large burner 11a, middle burner 11b, and small burner 11c, and the other distribution passage 20b supplies gas to the gas burner of the grill box 12. Valve devices 3a, 3b, 3c, and 3d are interposed in the gas supply passages connected to the distribution passages 20a and 20b, respectively. Each valve device incorporates an electromagnetic safety valve 31 that is kept open when the burner is ignited, and a thermal power adjustment unit 32 that adjusts the thermal power by increasing or decreasing the amount of gas supplied. The heating power adjustment unit 32 is configured to be driven by the motor 4. A governor 30 is provided in the valve device 3d.

図３を参照して、バルブユニット本体２はバルブ装置を並列に並べた状態で一体になるように、鋳造により板状に形成されている。そして、バルブユニット本体２が略水平な状態で天板１１の下方に取り付けられるように、１対の脚板３Ｌが取り付けられている。上記４個の各モータ４は図示のように一体に予め組み立てられており、バルブユニット本体２の下面に取り付けられる。   Referring to FIG. 3, the valve unit main body 2 is formed in a plate shape by casting so that the valve devices are integrated in a state where they are arranged in parallel. A pair of leg plates 3L is attached so that the valve unit body 2 is attached below the top plate 11 in a substantially horizontal state. Each of the four motors 4 is pre-assembled integrally as shown in the figure and attached to the lower surface of the valve unit body 2.

図４はバルブユニット本体２の下面を示している。この下面にはリブ状の壁部２３が形成されており、この壁部２３によって分配通路２０ａ，２０ｂが形成されている。そして、分配通路２０ａは上述のように３本のガス通路に分岐される。そのガス通路には電磁安全弁３１が取り付けられる。   FIG. 4 shows the lower surface of the valve unit body 2. A rib-shaped wall portion 23 is formed on the lower surface, and distribution passages 20a and 20b are formed by the wall portion 23. The distribution passage 20a is branched into three gas passages as described above. An electromagnetic safety valve 31 is attached to the gas passage.

具体的には、電磁安全弁３１の弁体３１ａ側からバルブユニット本体２に挿入して電磁安全弁３１をバルブユニット本体２にねじ止めする。電磁安全弁３１をバルブユニット本体２に取り付けた状態では、弁体３１ａはＡで示す位置まで挿入される。   Specifically, the electromagnetic safety valve 31 is inserted into the valve unit body 2 from the valve body 31 a side, and the electromagnetic safety valve 31 is screwed to the valve unit body 2. In a state where the electromagnetic safety valve 31 is attached to the valve unit main body 2, the valve body 31 a is inserted to the position indicated by A.

図５を参照して、本実施に形態では、電磁安全弁３１を挿入する前に予め樹脂製の弁座部材５を挿入しておく。この弁座部材５の先端部分に設けた弁座部５１が弁座として機能し、弁体３１ａがこの弁座部５１に当接してガス通路を閉弁する。なお、この閉弁状態で弁座部材５とガス通路との隙間を通ってガスが漏れないように、シール部材５２を設けた。ガス通路の内周面のうち、このシール部材５２が配設される部分は機械加工を施して面粗度を上げておく必要がある。   Referring to FIG. 5, in the present embodiment, a resin valve seat member 5 is inserted in advance before inserting the electromagnetic safety valve 31. The valve seat portion 51 provided at the distal end portion of the valve seat member 5 functions as a valve seat, and the valve body 31a contacts the valve seat portion 51 to close the gas passage. Note that a seal member 52 is provided so that gas does not leak through the gap between the valve seat member 5 and the gas passage in this closed state. Of the inner peripheral surface of the gas passage, the portion where the seal member 52 is disposed needs to be machined to increase the surface roughness.

本発明ではこの機械加工をする部分、すなわちＡで示した部分に壁部２３が重ならないように壁部２３の位置を決定した。このように壁部２３の位置をＡの部分と重ならないようにすると、壁部２３の間隔、すなわち分配通路２０ａの通路面積が広くなる。ただし、必要なガスの流量を確保するためには、本実施の形態で示す構成より狭い分配通路２０ａで十分である。   In the present invention, the position of the wall portion 23 is determined so that the wall portion 23 does not overlap the portion to be machined, that is, the portion indicated by A. When the position of the wall portion 23 is not overlapped with the portion A in this way, the interval between the wall portions 23, that is, the passage area of the distribution passage 20a is increased. However, a narrower distribution passage 20a than the configuration shown in the present embodiment is sufficient to ensure the necessary gas flow rate.

すなわち、分配通路２０ａの面積を、必要とされるガス流量から設計すると、壁部２３がＡの部分と重なる場合が生じるが、本発明では分配通路２０ａの必要流量とは別の理由で、壁部２３の位置を決定した。なお、６は分配通路２３ａ、２３ｂを閉鎖する蓋部材である。   That is, if the area of the distribution passage 20a is designed from the required gas flow rate, the wall portion 23 may overlap the portion A. However, in the present invention, the wall portion 23 is separated from the required flow rate of the distribution passage 20a. The position of part 23 was determined. Reference numeral 6 denotes a lid member for closing the distribution passages 23a and 23b.

なお、本発明は上記した形態に限定されるものではなく、本発明の要旨を逸脱しない範囲内において種々の変更を加えてもかまわない。   In addition, this invention is not limited to an above-described form, You may add a various change in the range which does not deviate from the summary of this invention.

本発明の一実施の形態の構成を示す図The figure which shows the structure of one embodiment of this invention ガスの流れを示すブロック図Block diagram showing gas flow 電動バルブユニットの外観図External view of electric valve unit バルブユニット本体に形成した分配通路の形状を示す図The figure which shows the shape of the distribution passage formed in the valve unit body V-V断面図V-V cross section

符号の説明Explanation of symbols

１ ガスコンロ
２ バルブユニット本体
２ａ 供給口
３ａ、３ｂ、３ｃ、３ｄ バルブ装置
４ モータ
４ａ、４ｂ、４ｃ 連結部材
１１ 天板
１１ａ 大バーナ
１１ｂ 中バーナ
１１ｃ 小バーナ
２２ 元弁
２３ａ、２３ｂ、２３ｃ 囲い壁
３１ 電磁安全弁
３２ 火力調節部
４１ 長穴 DESCRIPTION OF SYMBOLS 1 Gas cooker 2 Valve unit main body 2a Supply port 3a, 3b, 3c, 3d Valve apparatus 4 Motor 4a, 4b, 4c Connecting member 11 Top plate 11a Large burner 11b Middle burner 11c Small burner 22 Original valve 23a, 23b, 23c Enclosure wall 31 Electromagnetic safety valve 32 Thermal power control unit 41 Long hole

Claims (1)

電磁安全弁が各々設けられる複数のガス通路が並列に設けられた鋳造製のバルブユニット本体を備え、ガス通路の内周面であって、ガス通路における弁座部材に設けたシール部材が配設される部分を機械加工すると共に、各ガス通路にガスを供給する分配通路を、バルブユニット本体の表面に形成したリブ状の壁部で囲んで構成したバルブユニット装置であって、上記リブ状の壁部を、上記機械加工する部分に重ならないように設けたことを特徴とするバルブユニット装置。 A casting valve unit main body provided with a plurality of gas passages each provided with an electromagnetic safety valve in parallel is provided, and a seal member provided on a valve seat member in the gas passage is provided on an inner peripheral surface of the gas passage. portions with machining that a distribution passage for supplying the gas to the gas passage, a valve unit device configured surrounded by a rib-like wall portion formed on the surface of the valve unit main body, the rib-shaped wall The valve unit device is characterized in that the portion is provided so as not to overlap the portion to be machined.
JP2007209280A 2007-08-10 2007-08-10 Valve unit device Active JP4912978B2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6529364B2 (en) * 2015-07-09 2019-06-12 リンナイ株式会社 Water heater
JP7007803B2 (en) * 2017-02-10 2022-01-25 東京瓦斯株式会社 Gas piping system
JP6897962B2 (en) * 2017-07-28 2021-07-07 株式会社パロマ Gas distribution device, governor device and gas stove of gas stove

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Publication number Priority date Publication date Assignee Title
JPH04168241A (en) * 1990-10-31 1992-06-16 Hitachi Metals Ltd Al alloy for casting and engine intake parts for automobile
JPH06213428A (en) * 1993-01-14 1994-08-02 Rinnai Corp Valve for combustion apparatus
JPH0861606A (en) * 1994-08-24 1996-03-08 Gastar Corp Gas combustion device
JPH08165529A (en) * 1994-12-12 1996-06-25 Hitachi Metals Ltd Production of aluminum alloy die casting excellent in airtightness
JP3592048B2 (en) * 1997-10-02 2004-11-24 リンナイ株式会社 Thermal power control equipment for gas stove
JP4441079B2 (en) * 2000-07-19 2010-03-31 株式会社ハーマンプロ Gas burner combustion control system
JP3664661B2 (en) * 2001-03-16 2005-06-29 リンナイ株式会社 Gas valve
JP4842228B2 (en) * 2007-08-10 2011-12-21 リンナイ株式会社 Electric valve unit device

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