JP4422351B2 - Gas appliance flow control device - Google Patents

Gas appliance flow control device Download PDF

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JP4422351B2
JP4422351B2 JP2001017337A JP2001017337A JP4422351B2 JP 4422351 B2 JP4422351 B2 JP 4422351B2 JP 2001017337 A JP2001017337 A JP 2001017337A JP 2001017337 A JP2001017337 A JP 2001017337A JP 4422351 B2 JP4422351 B2 JP 4422351B2
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flow rate
circuit board
rate adjusting
gas
motor
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JP2002221312A (en
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譲 内田
洋 小寺
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株式会社ハーマンプロ
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Description

【0001】
【発明の属する技術分野】
本発明は、ビルトインガスこんろ、テーブルガスこんろのように複数のバーナを有するガス器具において、各バーナに夫々別々に流量調整してガスを供給する構造に関するものである。
【0002】
【従来の技術及び発明が解決しようとする課題】
一般にガスこんろは複数個のコンロ用バーナやグリル用バーナを有するものであり、各バーナに夫々別々に流量調整してガスを供給する必要がある。このように複数のバーナにガスを供給する場合、ガスこんろに元弁本体を組み込んで各バーナにガスを分配して供給できるようになっている。元弁本体には1つのガス入口を設けてあると共に複数個のガス出口を設けてあり、元弁本体に設けた複数の分岐流路にてガス入口とガス出口とを連通させてあり、複数の分岐通路の途中には閉子式の流量調整部を設けてある。ガス入口にはガス供給管をねじ込み等で接続してあり、ガス出口と複数のバーナとを夫々別々に連通させてある。そして流量調整部でガスの流量を調整してバーナに夫々供給できるようになっている。
【0003】
上記閉子式の流量調整部を元弁本体に設ける場合、元弁本体自体に設けた閉子収納孔に閉子を回転自在に装着して構成されている。ところで、複数個の閉子式の流量調整部のうち1つでも不良がでると(流量調整部は精密部品のために精度が要求される)、元弁本体全体を交換しなければならなく、歩留まりが悪くてコストアップになるという問題がある。またガスこんろにガス供給のための配管を接続するとき、元弁本体のガス入口に管を接続するが、ガス入口にはテーパーねじが切られているためガス配管接続時に元弁本体に大きな回転トルクがかかる。このとき閉子式の流量調整部は寸法精度を要する精密部品であるため、元弁本体と一体に作られていると、ガス配管接続時に変形して不良がでる。
【0004】
本発明は叙述の点に鑑みてなされたものであって、歩留まりをよくしてコストダウンでき、しかもガス配管接続時にも不良が発生しないガス器具の流量調整装置を提供することを課題とする。
【0005】
【課題を解決するための手段】
上記課題を解決するため本発明のガス器具の流量調整装置は、1つのガス入口1と複数のガス出口2とを複数の分岐流路3aで連通させた元弁本体4をガス器具に設けると共に各ガス出口2を複数のバーナ5に夫々連通させ、元弁本体4の複数の分岐流路3aに夫々別々に閉子式の流量調整部6を設けてガスを供給するようにしたガス器具の流量調整装置おいて、1つの元弁本体4に対して上記複数個の流量調整部6を別体にし、流量調整部6を弁筐体7と弁筐体7内の閉子収納孔8に回転自在に装着した閉子9とで形成し、各流量調整部6を夫々別々に上記元弁本体4に着脱自在に取り付けたことを特徴とする。上記のように弁筐体7と閉子9とからなる流量調整部6を元弁本体4と別体に形成して流量調整部6を元弁本体4に着脱自在に取り付けていることにより、精密部品である流量調整部6に不良が生じても元弁本体4がそのままで不良の部品の流量調整部6を交換するだけでよくて従来より歩留まりをよくしてコストダウンできる。またガス入口1への配管接続時に元弁本体4に回転トルクがかかっても流量調整部6が歪まなく、この点でも不良の発生を防ぐことができる。
【0006】
またモータ10で上記閉子9が回転駆動されるようにモータ10と各閉子9とを連結し、各流量調整部6の閉子9の回転位置を検出する位置検出器11を設けたことを特徴とする。閉子9をモータ10で駆動できて流量の調整がタッチパネル等で容易にできる。モータ10で駆動するものでも閉子9の位置を検出して正確に制御できる。
【0007】
また前記位置検出器11は、回路基板12と、回路基板12に摺接する金属製のブラシ13と、ブラシ13が取り付け固定されると共に閉子9と一体に回転するロータ14と、これらを収納するハウジング15とで構成され、上記ロータ14は複数個の流量調整部6に対して個々に設けられ、且つ回路基板12は複数個分の回路が一体に設けられたことを特徴とすることも好ましい。回路基板12の回路に対してブラシ13を摺接させることで位置を検出することにより位置を検出する構造を簡単にでき、また回路基板12には複数個の流量調整部6の位置検出をする回路が設けられたので回路基板12が1枚でよくてこの点でも構造を簡単できる。
【0008】
また前記回路基板12にはモータ用回路16が形成されると共にモータ10に接続するコネクター17が設けられたことを特徴とすることも好ましい。閉子9の回転位置を検出する回路基板12にてモータ10に給電したりモータ10を制御したりする配線を設けることができると共に回路基板12のモータ用回路16とモータ10とをコネクター接続でき、組み立てを容易にできると共に配線ミスをなくすことができる。
【0009】
また前記位置検出器11は、回路基板12と、回路基板12に摺接する金属製のブラシ13と、ブラシ13が取り付け固定されると共に閉子9と一体に回転するロータ14と、これらを収納するハウジング15とで構成され、ハウジング15にはロータ14の回転範囲を規制する規制手段が設けられたことを特徴とする。位置検出器11が故障してもロータ14が所定の角度以上回転するのを防止でき、閉子9の回転のオーバーランを防止できる。
【0010】
【発明の実施の形態】
本例の場合、ガス器具の一例としてガスこんろについて述べる。図5はガスこんろ全体の系統図を示すが、本例の場合、バーナ5として3つのこんろ用バーナ5aと1つのグリル用バーナ5bとがある。バーナ5には夫々バーナ5に点火する点火プラグ20とバーナ5の火炎を熱起電力で検出する熱電対21を夫々配置してある。元弁本体4のガス入口1からガスを供給するガス供給経路3は4つの分岐経路3aに分岐してあり、各分岐経路3aのガス出口2を夫々各バーナ5に連通させてある。ガス供給経路3の4つに分岐する手前には経路を開閉する電磁弁22を配置してあり、4つの分岐経路3aには夫々ガスの流量調整部6を配置してある。グリル用バーナ5bにガスを供給する分岐経路3aでは流量調整部6の手前で圧力を調圧するガバナー19を配置してある。
【0011】
上記各バーナ5は制御回路を有するバーナコントローラ23で制御されるようになっており、各点火/消火ボタン24を操作することでバーナコントローラ23を介して各バーナ5の点火や消火の制御がされるようになっており、また各火力調整ボタン25を操作することでバーナコントローラ23を介して各流量調整部6が調整されて各バーナ5の火力が調整されるようになっている。バーナ5を点火するときはイグナイタースイッチがオンされ、イグナイター26に給電され、点火プラグ20が放電するようになっている。また熱電対21の熱起電力はバーナコントローラ23に入力され、これによりバーナコントローラ23にて電磁弁22や流量調整部6が制御されるようになっている。図5のAとA′、BとB′、CとC′、DとD′、EとE′、FとF′が電気的に接続されている。
【0012】
上記ガス供給経路3、分岐経路3aに配置する電磁弁22、ガバナー19及び流量調整部6が図1乃至図4に示すように1つの元弁本体4に組み込まれている。電磁弁22の部分ではガス供給経路3に弁孔27を設けてあり、電磁アクチュエータ28で駆動される弁体29で開閉されるようになっている。電磁弁22より下流側で4つに分岐された分岐流路3aには夫々流量調整部6が配置されているが、グリル用バーナ5bに連通している流量調整部6では流量調整部6より上流側にガバナー19を配置してある。
【0013】
本発明の場合、複数個の流量調整部6は元弁本体4と別体に形成されており、元弁本体4に各流量調整部6を着脱自在に取り付けてある。かかる流量調整部6は図15に示すような弁筐体7と弁筐体7の閉子収納孔8内に回転自在に収納した図12に示すような閉子9とで構成されている。流量調整部6の弁筐体7には接続筒31を突設してあり、元弁本体4の分岐流路3aに設けた接続口32に接続筒31を差し込むことで流量調整部6を元弁本体4に着脱自在に取り付けてある。接続筒31の外周にはOリング33を装着してあり、Oリング33にて接続筒31と接続口32との間のシールをしてある。また元弁本体4の各流量調整部6と対応する位置には位置決め突起34を設けてあり、位置決め突起34に弁筐体7の位置決め孔35を嵌合して弁筐体7を位置決めしてある。
【0014】
閉子9は図12に示すように内部が空洞30となっており、この空洞30内と元弁本体4の分岐流路3aとが上記接続筒31内を介して連通している。閉子9には空洞30内と閉子9の外周とを連通させるガス通路として主閉子孔36と小火用閉子孔37とが穿孔してある。主閉子孔36と小火用閉子孔37とは閉子9の軸方向にずれていると共に周方向に略90°ずれている。弁筐体7には閉子9の外周の位置で主ガス用流出路38と小火ガス用流出路39を設けてあり、主ガス用流出路38の端部を主閉子孔36に対応させてあると共に小火ガス用流出路39の端部を小火用閉子孔37に対応させてある。小火ガス用流出路39には小火用オリフィス40を設けてあり、この小火用オリフィス40の径を小火用閉子孔37の径よりも十分に小さくしてある。主ガス用流出路38と小火ガス用流出路39とは1つのガス出口2に合流させて連通させてあり、各ガス出口2を各バーナ5に連通させてある。
【0015】
上記のように接続筒31を接続口32に差し込んで流量調整部6を元弁本体4に取り付けた状態で流量調整部6の上から重ねるように図13に示すような取り付け板42が配置され、取り付け板42の設けた4つの透孔43と弁筐体7の閉子収納孔8の開口とが対応させられ、取り付け板42の取り付け孔45からビスを元弁本体4に螺合して取り付けられる。これにより、取り付け板42が元弁本体4に取り付けられると共に取り付け板42にて流量調整部6を押さえて流量調整部6が外れないように固定される。取り付け板42を取り付けるとき弁筐体7の位置決め突起46が取り付け板42の位置決め孔47に嵌合されて取り付け板42が所定位置に位置決めされる。
【0016】
上記のように流量調整部6が元弁本体4と別体に形成されており、取り付け板42を取り外すことにより流量調整部6を容易に着脱でき、流量調整部6に不良があったりした場合、それに該当する流量調整部6を交換するだけで対応でき、元弁本体4全体を交換しなければならない従来のものに比べて歩留まりを向上でき、コストダウンが図れる。また元弁本体4のガス入口1の配管接続時に元弁本体4に回転トルクがかかっても流量調整部6が元弁本体4と別体のために流量調整部6に外力がかかることがなく、精密部品である流量調整部6に不良を発生したりするおそれがない。
【0017】
取り付け板42を取り付けた後、弁筐体7の閉子収納孔8の開口に透孔43から図16に示すような回転子50が挿入され、閉子9の端面の係止部51と回転子50の被係止部50aとが係止されて閉子9と回転子50とが一体回転するようにされる。このとき回転子50と閉子9との間にばね52が介装されてばね52にて閉子9が付勢されている。取り付け板42の上には位置検出器11を介して閉子9を回転駆動するモータ10が取り付けられ、モータ10にて回転子50を介して閉子9が回転駆動されるようになっている。モータ10は本例の場合、ギヤードモータであり、ステッピングモータのようなモータ本体10aと減速機構10bとで構成されている。モータ10の出力軸53は回転子50の嵌合凹部54に嵌合され、出力軸53と回転子50が一体回転するようになっている。しかしてモータ10を回転駆動すると、モータ10にて回転子50を介して閉子9が回転駆動されて流量調整がされるようになっている。
【0018】
上記位置検器11は図8に示すように回路基板12と金属製のブラシ13とロータ14とこれらを収納するハウジング15とで構成されている。回路基板12は長方形状であり、絶縁基板に導体の回路を形成してある。回路基板12には4つの閉子9や4つのモータ10に対応するように透孔55を穿設してあり、この透孔55に上記出力軸53を挿通してある。回路基板12には位置検出用回路56とモータ用回路16とを設けてある。回路基板12の4つの透孔55の周囲には夫々接点部57を設けてあり、位置検出回路56の一端を接点部57に導通させてある。位置検出回路56の他端部は回路基板12の端縁に位置させてあり、この他端部に位置検出用のコネクター58を設けてある。モータ用回路16の一端は回路基板12の端縁に位置させてあり、この一端部にモータ用のコネクター59を設けてある。モータ用回路16の他端には4つのモータ用のコネクター17が設けられている。
【0019】
回路基板12の各透孔55に対応する位置には円板状のロータ14を配置してあり、ロータ14の中心に設けた嵌合孔60に出力軸53を嵌合させて出力軸53とロータ14とが一体に回転するようになっている。ロータ14の中心に筒状に設けた接続筒61を透孔55に回転自在に挿通してあり、接続筒61の係止爪62を後述するハウジング15の通孔63縁に係止してロータ14を回路基板12やハウジング15に回転自在に取り付けてある。ロータ14にはブラシ13を装着してあり、ロータ14が回転することでブラシ13が回路基板12の接点部57に対して摺接して接点交換するようになっている。これによりモータ10にて駆動される閉子9の回転位置を検出できるようになっている。
【0020】
ハウジング15は背面を開口せる薄箱状に形成されており、ハウジング15内に回路基板12を収納してある。ハウジング15内に回路基板12を収納した状態で回路基板12の透孔55とハウジング15の通孔63とが合致させられ、回路基板12のコネクター17がハウジング15の挿通孔73に挿通され、回路基板12の固定孔65aにハウジング15の固定突起65bが挿通され、図11に示すように固定突起65bが固定孔65aに熱融着されてハウジング15に回路基板12が固定される。通孔63にはロータ14の接続筒61が挿通され、通孔63縁に係止爪62が係止されている。ハウジング15の通孔63の周囲の適所には規制ピン66を突設してあり、規制ピン66を回路基板12の挿通孔67に挿通してあり、規制ピン66を接点部57に位置させてある。ロータ14の外周には周方向の所定の角度範囲に亙る規制凹溝80を設けてあり、この規制凹溝80内に規制ピン66を位置させてある。この規制ピン66と規制凹溝80にてロータ14の回転範囲を規制する規制手段が構成され、位置検出器11が故障してもロータ14が所定の角度以上回転するのを防止でき、閉子9の回転のオーバーランを防止できる。ハウジング15の周縁のフランジ68から係止脚69を突設してあり、係止脚69を取り付け板42の係止孔70に挿入して係止してある。またハウジング15のフランジ68には位置決めピン71を突設してあり、位置決めピン71を取り付け板42の位置決め孔72に嵌合して位置決めしてある。取り付け板10にハウジング15を取り付けることにより取り付け板42とハウジング15との間に回路基板12が収納される。
【0021】
モータ10はハウジング15の上に重ねられ、モータ10の取り付け片74の取り付け孔75からビス76をハウジング15のねじ孔77に螺合することで取り付けてある。モータ10にはコネクター78を一体に設けてあり、モータ10を取り付けることによりコネクター78とコネクター17とが接続されてモータ10とモータ用回路16とが接続される。
【0022】
本発明ではモータ10を駆動することにより出力軸53、回転子50を介して閉子9が回転駆動されることより流量調整されるが、モータ10にて閉子9が回転駆動されるために流量の調整がタッチパネル等で容易にできる。このとき位置検出器11で閉子9の回転位置を検出でき、モータ10で駆動するものでも閉子9の位置を検出して正確に制御できる。位置検出器11は上記のように回路基板12と、ブラシ13と、ロータ14と、ハウジング15とで構成され、モータ10で駆動されるロータ14のブラシ13を回路基板12の位置検出回路56の接点部57に対して摺接させることにより閉子9の回転位置を検出することができるために閉子9の回転位置を検出する構造を簡単にできる。また1枚の回路基板12に4つの閉子9に対応する位置検出回路56が設けられたので回路基板12が1枚でよくてこの点でも構造を簡単にできる。また回路基板12にはモータ用回路16も設けてあるのでモータ10に給電したり、モータ10を制御したりする配線を簡単にでき、しかもモータ10とモータ用回路16とはコネクター78とコネクター17の接合で接続でき、配線が容易にできると共に配線ミスをなくすことができる。
【0023】
また閉子9の主閉子孔36は円形の孔部36aと孔部36aに連通する一対の楔状溝36b,36cとで構成されている。小火用閉子孔37も円形の孔部37aと孔部37aに連通する一対の楔状溝37b,37cとで構成されている。そして少なくとも主閉子孔36の楔状溝36b,36cの両側の肩部にR部79を設けてある。弁筐体7の閉子収納孔8に閉子9を回転自在に収納するときこれらの間にグリスが介装されるが、上記のようにR部79を設けてあると、閉子9が回転するときグリスが楔状溝36b,36cに詰まるのを防止できる。つまり楔状溝36b,36cの肩部がエッジになっていると、閉子9を回転したときグリスを掻き落としやく、楔状溝36b,36cにグリスが詰まり、正常な流量特性が得られないが、R部79を設けてあると、グリスが楔状溝3b,36cに詰まることがなくて正確な流量特性が得られる。
【0024】
【発明の効果】
本発明の請求項1の発明は、叙述の如く1つの元弁本体に対して上記複数個の流量調整部を別体にし、流量調整部を弁筐体と弁筐体内の閉子収納孔に回転自在に装着した閉子とで形成し、各流量調整部を夫々別々に上記元弁本体に着脱自在に取り付けたので、精密部品である流量調整部に不良が生じても元弁本体がそのままで不良の部品の流量調整部を交換するだけでよくて従来より歩留まりをよくしてコストダウンできるものであり、またガス入口への配管接続時に元弁本体に回転トルクがかかっても流量調整部が歪まなく、この点でも不良の発生を防ぐことができるものである。
【0025】
また本発明の請求項2の発明は、請求項1において、モータで上記閉子が回転駆動されるようにモータと各閉子とを連結したので、閉子をモータで駆動できて流量の調整がタッチパネル等で容易にできるものであり、また各流量調整部の閉子の回転位置を検出する位置検出器を設けたので、モータで駆動するものでも閉子の位置を検出して正確に制御できるものである。
【0026】
また本発明の請求項3の発明は、請求項2において、前記位置検出器は、回路基板と、回路基板に摺接する金属製のブラシと、ブラシが取り付け固定されると共に閉子と一体に回転するロータと、これらを収納するハウジングとで構成されるので、回路基板の回路に対してブラシを摺接させることで位置を検出することにより位置を検出する構造を簡単にできるものであり、また上記ロータは複数個の流量調整部に対して個々に設けられ、且つ回路基板は複数個分の回路が一体に設けられたので、回路基板が1枚でよくてこの点でも構造を簡単できるものである。
【0027】
また本発明の請求項4の発明は、請求項3において、前記回路基板にはモータ用回路が形成されると共にモータに接続するコネクターが設けられたので、閉子の回転位置を検出する回路基板にモータに給電したりモータを制御したりする配線を設けることができると共に回路基板のモータ用回路とモータとをコネクター接続でき、組み立てを容易にできると共に配線ミスをなくすことができるものである。
【0028】
また本発明の請求項5の発明は、請求項2乃至請求項4において、前記位置検出器は、回路基板と、回路基板に摺接する金属製のブラシと、ブラシが取り付け固定されると共に閉子と一体に回転するロータと、これらを収納するハウジングとで構成され、ハウジングにはロータの回転範囲を規制する規制手段が設けられたので、位置検出器が故障してもロータが所定の角度以上回転するのを防止でき、閉子の回転のオーバーランを防止できるものである。
【図面の簡単な説明】
【図1】本発明の実施の形態の一例のガス元弁部分の正面から見た断面図である。
【図2】同上の平面から見た断面図である。
【図3】同上の平面図である。
【図4】同上の側面図である。
【図5】同上のガスこんろ全体の概略系統図である。
【図6】同上のガス元弁部分の分解平面図である。
【図7】同上のガス元弁部分の分解断面図である。
【図8】同上のモータと位置検出器部分の分解斜視図である。
【図9】同上のロータ部分を示し、(a)(b)は夫々異なる方向から見た斜視図である。
【図10】同上のハウジングを示し、(a)は背面図、(b)は平面図、(c)は正面図、(d)は(c)のH−H線断面図、(e)は(c)のJ−J線断面図である。
【図11】(a)(b)はハウジングへの回路基板の取り付けを説明する断面図である。
【図12】同上の閉子を示し、(a)は平面図、(b)は正面図、(c)は正面から見た断面図、(d)は(c)のK−K線断面図、(e)は(c)のL−L線断面図、(f)は(d)の側面から見た断面図である。
【図13】同上の取り付け板を示し、(a)は平面図、(b)は正面図、(c)は側面図である。
【図14】同上の回路基板を示し、(a)は平面図、(b)は正面図、(c)は左側面図、(d)は右側面図である。
【図15】同上の弁筐体を示し、(a)は平面図、(b)は正面から見た断面図、(c)は側面図である。
【図16】同上の回転子を示し、(a)は正面から見た断面図、(b)は左側面図、(c)は右側面図である。
【符号の説明】
1 ガス入口
2 ガス出口
3a 分岐流路
4 元弁本体
5 バーナ
6 流量調整部
7 弁筐体
8 閉子収納孔
9 閉子
10 モータ
11 位置検出器
12 回路基板
13 ブラシ
14 ロータ
16 モータ用回路
17 コネクター
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a gas appliance having a plurality of burners such as a built-in gas stove and a table gas stove, and a structure for supplying gas by individually adjusting the flow rate to each burner.
[0002]
[Prior art and problems to be solved by the invention]
In general, a gas stove has a plurality of stove burners and grill burners, and it is necessary to supply gas to each burner by separately adjusting the flow rate. In this way, when supplying gas to a plurality of burners, the main valve body is incorporated in the gas stove so that the gas can be distributed and supplied to each burner. The main valve body is provided with one gas inlet and a plurality of gas outlets, and the gas inlet and the gas outlet are communicated with each other through a plurality of branch passages provided in the main valve body. In the middle of this branch passage, a closed flow rate adjusting unit is provided. A gas supply pipe is connected to the gas inlet by screwing or the like, and the gas outlet and the plurality of burners are communicated with each other separately. The gas flow rate can be adjusted and supplied to the burner by the flow rate adjusting unit.
[0003]
When the above-mentioned closing type flow rate adjusting portion is provided in the main valve body, the closing valve is rotatably mounted in a closing hole provided in the main valve body itself. By the way, if even one of the plurality of closed type flow rate adjustment units is defective (the flow rate adjustment unit requires precision because of precision parts), the entire main valve body must be replaced. There is a problem that the yield is bad and the cost is increased. In addition, when connecting a gas supply pipe to the gas stove, a pipe is connected to the gas inlet of the main valve body, but since the taper screw is cut at the gas inlet, the main valve body is large when the gas pipe is connected. Rotational torque is applied. At this time, the closed flow rate adjusting portion is a precision part that requires dimensional accuracy, so if it is made integrally with the main valve body, it will be deformed and defective when connected to the gas pipe.
[0004]
The present invention has been made in view of the description, and it is an object of the present invention to provide a flow rate adjustment device for a gas appliance that can improve the yield and reduce the cost, and that does not cause defects even when the gas pipe is connected.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the flow adjustment device for a gas appliance according to the present invention is provided with a main valve body 4 in which one gas inlet 1 and a plurality of gas outlets 2 are communicated with each other through a plurality of branch channels 3a. Each gas outlet 2 is communicated with a plurality of burners 5, and a closed flow rate adjusting unit 6 is separately provided in each of a plurality of branch flow paths 3 a of the main valve body 4 to supply gas. Oite the flow control device, the plurality of flow rate adjusting section 6 to a single main valve body 4 separately, the flow rate adjusting section 6 of the valve housing 7 and the valve housing within 7閉子housing holes 8 The flow rate adjusting unit 6 is separately attached to the original valve body 4 in a detachable manner. As described above, by forming the flow rate adjusting unit 6 composed of the valve housing 7 and the closing member 9 separately from the main valve body 4 and attaching the flow rate adjusting unit 6 to the main valve body 4 detachably, Even if a defect occurs in the flow rate adjustment unit 6 which is a precision part, it is only necessary to replace the flow rate adjustment unit 6 of the defective part with the original valve main body 4 as it is. In addition, even when a rotational torque is applied to the main valve body 4 when the pipe is connected to the gas inlet 1, the flow rate adjusting unit 6 is not distorted.
[0006]
Further, a position detector 11 for detecting the rotational position of the closing member 9 of each flow rate adjusting unit 6 is provided by connecting the motor 10 and each closing member 9 so that the closing member 9 is rotationally driven by the motor 10. It is characterized by. The closing member 9 can be driven by the motor 10 and the flow rate can be easily adjusted with a touch panel or the like. Even those driven by the motor 10 can detect the position of the closing member 9 and accurately control it.
[0007]
The position detector 11 houses a circuit board 12, a metal brush 13 slidably in contact with the circuit board 12, a rotor 14 to which the brush 13 is attached and fixed, and which rotates integrally with the closing member 9. It is also preferable that the rotor 14 is individually provided for the plurality of flow rate adjusting units 6, and the circuit board 12 is integrally provided with a plurality of circuits. . The structure for detecting the position can be simplified by detecting the position by bringing the brush 13 into sliding contact with the circuit of the circuit board 12, and the position of the plurality of flow rate adjusting units 6 is detected on the circuit board 12. Since the circuit is provided, only one circuit board 12 is required, and the structure can be simplified in this respect.
[0008]
It is also preferable that the circuit board 12 has a motor circuit 16 and a connector 17 connected to the motor 10. The circuit board 12 for detecting the rotational position of the closing member 9 can be provided with a wiring for supplying power to the motor 10 and controlling the motor 10, and the motor circuit 16 on the circuit board 12 and the motor 10 can be connected with a connector. As a result, assembly can be facilitated and wiring errors can be eliminated.
[0009]
The position detector 11 houses a circuit board 12, a metal brush 13 slidably in contact with the circuit board 12, a rotor 14 to which the brush 13 is attached and fixed, and which rotates integrally with the closing member 9. The housing 15 is characterized in that the housing 15 is provided with restricting means for restricting the rotation range of the rotor 14. Even if the position detector 11 breaks down, the rotor 14 can be prevented from rotating more than a predetermined angle, and overrun of the closing member 9 can be prevented.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
In the case of this example, a gas stove will be described as an example of a gas appliance. FIG. 5 shows a system diagram of the entire gas stove. In this example, there are three stove burners 5 a and one grill burner 5 b as the burner 5. The burner 5 is provided with a spark plug 20 for igniting the burner 5 and a thermocouple 21 for detecting the flame of the burner 5 by thermoelectromotive force. The gas supply path 3 for supplying gas from the gas inlet 1 of the main valve body 4 is branched into four branch paths 3a, and the gas outlets 2 of the branch paths 3a are communicated with the respective burners 5. An electromagnetic valve 22 for opening and closing the path is arranged in front of the four branches of the gas supply path 3, and a gas flow rate adjusting unit 6 is arranged in each of the four branch paths 3a. In the branch path 3a for supplying gas to the grill burner 5b, a governor 19 for adjusting the pressure is disposed in front of the flow rate adjusting unit 6.
[0011]
Each burner 5 is controlled by a burner controller 23 having a control circuit. By operating each ignition / fire extinguishing button 24, the ignition and fire extinguishing of each burner 5 are controlled via the burner controller 23. Further, by operating each heating power adjustment button 25, each flow rate adjusting unit 6 is adjusted via the burner controller 23 so that the heating power of each burner 5 is adjusted. When the burner 5 is ignited, the igniter switch is turned on, power is supplied to the igniter 26, and the spark plug 20 is discharged. Further, the thermoelectromotive force of the thermocouple 21 is input to the burner controller 23, whereby the burner controller 23 controls the electromagnetic valve 22 and the flow rate adjusting unit 6. In FIG. 5, A and A ′, B and B ′, C and C ′, D and D ′, E and E ′, and F and F ′ are electrically connected.
[0012]
The solenoid valve 22, the governor 19 and the flow rate adjusting unit 6 arranged in the gas supply path 3, the branch path 3a are incorporated in one main valve body 4 as shown in FIGS. In the part of the electromagnetic valve 22, a valve hole 27 is provided in the gas supply path 3 and is opened and closed by a valve body 29 driven by an electromagnetic actuator 28. A flow rate adjusting unit 6 is disposed in each of the four branch flow paths 3a branched downstream from the electromagnetic valve 22, but the flow rate adjusting unit 6 communicating with the grill burner 5b is more than the flow rate adjusting unit 6. A governor 19 is disposed on the upstream side.
[0013]
In the case of the present invention, the plurality of flow rate adjusting parts 6 are formed separately from the main valve body 4, and each flow rate adjusting part 6 is detachably attached to the main valve body 4. The flow rate adjusting unit 6 includes a valve housing 7 as shown in FIG. 15 and a closing member 9 as shown in FIG. 12 that is rotatably housed in a closing hole 8 of the valve housing 7. A connection cylinder 31 is provided on the valve housing 7 of the flow rate adjustment unit 6 so that the flow rate adjustment unit 6 can be restored by inserting the connection cylinder 31 into a connection port 32 provided in the branch flow path 3a of the main valve body 4. The valve body 4 is detachably attached. An O-ring 33 is attached to the outer periphery of the connection tube 31, and a seal is provided between the connection tube 31 and the connection port 32 by the O-ring 33. Positioning protrusions 34 are provided at positions corresponding to the respective flow rate adjusting portions 6 of the main valve body 4, and the positioning holes 35 of the valve housing 7 are fitted into the positioning protrusions 34 to position the valve housing 7. is there.
[0014]
As shown in FIG. 12, the inside of the closing member 9 is a hollow 30, and the inside of the hollow 30 and the branch flow path 3 a of the main valve body 4 communicate with each other through the inside of the connecting cylinder 31. The closing member 9 is provided with a main closing hole 36 and a small fire closing hole 37 as gas passages for communicating the inside of the cavity 30 with the outer periphery of the closing member 9. The main closing hole 36 and the small fire closing hole 37 are shifted in the axial direction of the closing element 9 and shifted by approximately 90 ° in the circumferential direction. The valve casing 7 is provided with a main gas outflow passage 38 and a small fire gas outflow passage 39 at the outer peripheral position of the closing member 9, and the end of the main gas outflow passage 38 corresponds to the main closing hole 36. In addition, the end portion of the small fire gas outflow passage 39 is made to correspond to the small fire closing hole 37. A small fire orifice 40 is provided in the small fire gas outflow passage 39, and the diameter of the small fire orifice 40 is sufficiently smaller than the diameter of the small fire closing hole 37. The main gas outflow path 38 and the small fire gas outflow path 39 are joined to and communicated with one gas outlet 2, and each gas outlet 2 is communicated with each burner 5.
[0015]
As shown above, the attachment plate 42 as shown in FIG. 13 is arranged so as to overlap the flow adjustment part 6 with the connection cylinder 31 inserted into the connection port 32 and the flow adjustment part 6 attached to the main valve body 4. The four through holes 43 provided in the mounting plate 42 correspond to the openings of the closing housing holes 8 of the valve housing 7, and screws are screwed into the main valve body 4 from the mounting holes 45 of the mounting plate 42. It is attached. Thereby, the attachment plate 42 is attached to the main valve body 4 and is fixed so that the flow rate adjustment unit 6 is not detached by pressing the flow rate adjustment unit 6 with the attachment plate 42. When the attachment plate 42 is attached, the positioning projection 46 of the valve housing 7 is fitted into the positioning hole 47 of the attachment plate 42 so that the attachment plate 42 is positioned at a predetermined position.
[0016]
As described above, the flow rate adjusting unit 6 is formed separately from the main valve body 4, and the flow rate adjusting unit 6 can be easily attached and detached by removing the mounting plate 42, and the flow rate adjusting unit 6 has a defect. Therefore, it is possible to cope with the problem by simply replacing the corresponding flow rate adjusting unit 6, and the yield can be improved and the cost can be reduced as compared with the conventional one in which the entire main valve body 4 must be replaced. Further, even when a rotational torque is applied to the main valve body 4 when the gas inlet 1 of the main valve body 4 is connected to the pipe, the flow rate adjusting unit 6 is separate from the main valve body 4 so that no external force is applied to the flow rate adjusting unit 6. There is no possibility of causing a defect in the flow rate adjusting unit 6 that is a precision part.
[0017]
After the mounting plate 42 is attached, a rotor 50 as shown in FIG. 16 is inserted into the opening of the closing housing hole 8 of the valve housing 7 from the through hole 43, and rotates with the locking portion 51 on the end face of the closing member 9. The locked portion 50a of the child 50 is locked, and the closing member 9 and the rotor 50 are rotated together. At this time, a spring 52 is interposed between the rotor 50 and the closing member 9, and the closing member 9 is biased by the spring 52. A motor 10 that rotationally drives the closing member 9 is attached to the mounting plate 42 via the position detector 11, and the closing member 9 is driven to rotate by the motor 10 via the rotor 50. . In this example, the motor 10 is a geared motor, and includes a motor body 10a such as a stepping motor and a speed reduction mechanism 10b. The output shaft 53 of the motor 10 is fitted in the fitting recess 54 of the rotor 50 so that the output shaft 53 and the rotor 50 rotate integrally. Thus, when the motor 10 is rotationally driven, the closing flow 9 is rotationally driven by the motor 10 via the rotor 50 so that the flow rate is adjusted.
[0018]
It said position detector 11 is composed of a housing 15 for accommodating these circuit board 12 and the metal brush 13 and the rotor 14 as shown in FIG. The circuit board 12 has a rectangular shape, and a conductor circuit is formed on an insulating board. The circuit board 12 has through holes 55 corresponding to the four closing members 9 and the four motors 10, and the output shaft 53 is inserted through the through holes 55. The circuit board 12 is provided with a position detection circuit 56 and a motor circuit 16. Around the four through holes 55 of circuit board 12 is provided with a respective contact portion 57, it is brought into conduction one end of the position detecting circuit 56 to the contact portion 57. The other end portion of the position detection circuit 56 Yes by positioning the edge of the circuit board 12, are a connector 58 for position detection in the other end portion is provided. One end of the motor circuit 16 is positioned at the edge of the circuit board 12, and a motor connector 59 is provided at this one end. At the other end of the motor circuit 16, four motor connectors 17 are provided.
[0019]
A disk-shaped rotor 14 is arranged at a position corresponding to each through hole 55 of the circuit board 12, and the output shaft 53 is fitted into a fitting hole 60 provided at the center of the rotor 14. The rotor 14 rotates integrally. A connecting tube 61 provided in a cylindrical shape at the center of the rotor 14 is rotatably inserted into the through hole 55, and a locking claw 62 of the connecting tube 61 is locked to an edge of a through hole 63 of the housing 15 to be described later. 14 is rotatably attached to the circuit board 12 and the housing 15. A brush 13 is attached to the rotor 14. When the rotor 14 rotates, the brush 13 slides against the contact portion 57 of the circuit board 12 to exchange the contact. Thus, the rotational position of the closing member 9 driven by the motor 10 can be detected.
[0020]
The housing 15 is formed in a thin box shape having an open back surface, and the circuit board 12 is accommodated in the housing 15. With the circuit board 12 housed in the housing 15, the through hole 55 of the circuit board 12 and the through hole 63 of the housing 15 are matched, and the connector 17 of the circuit board 12 is inserted through the insertion hole 73 of the housing 15. The fixing protrusion 65b of the housing 15 is inserted into the fixing hole 65a of the substrate 12, and the fixing protrusion 65b is thermally fused to the fixing hole 65a as shown in FIG. The connecting cylinder 61 of the rotor 14 is inserted into the through hole 63, and a locking claw 62 is locked to the edge of the through hole 63. A restricting pin 66 protrudes at an appropriate position around the through hole 63 of the housing 15, the restricting pin 66 is inserted into the inserting hole 67 of the circuit board 12, and the restricting pin 66 is positioned at the contact portion 57. is there. The outer periphery of the rotor 14 is provided with a restriction groove 80 extending over a predetermined angular range in the circumferential direction, and the restriction pin 66 is positioned in the restriction groove 80. The restricting pin 66 and the restricting concave groove 80 constitute restricting means for restricting the rotation range of the rotor 14, and even if the position detector 11 fails, the rotor 14 can be prevented from rotating more than a predetermined angle. 9 overruns of rotation can be prevented. A locking leg 69 protrudes from a flange 68 at the periphery of the housing 15, and the locking leg 69 is inserted into the locking hole 70 of the mounting plate 42 and locked. Further, a positioning pin 71 projects from the flange 68 of the housing 15 and is positioned by fitting the positioning pin 71 into the positioning hole 72 of the mounting plate 42. By attaching the housing 15 to the attachment plate 10, the circuit board 12 is accommodated between the attachment plate 42 and the housing 15.
[0021]
The motor 10 is overlaid on the housing 15, and is attached by screwing a screw 76 from a mounting hole 75 of the mounting piece 74 of the motor 10 into a screw hole 77 of the housing 15. A connector 78 is provided integrally with the motor 10. When the motor 10 is attached, the connector 78 and the connector 17 are connected, and the motor 10 and the motor circuit 16 are connected.
[0022]
In the present invention, the flow rate is adjusted by driving the motor 10 to rotate the closing member 9 via the output shaft 53 and the rotor 50. However, the closing force of the closing member 9 is driven by the motor 10. The flow rate can be easily adjusted with a touch panel or the like. At this time, the rotational position of the closing member 9 can be detected by the position detector 11, and even the one driven by the motor 10 can detect and accurately control the position of the closing member 9. The position detector 11 is composed of the circuit board 12, the brush 13, the rotor 14, and the housing 15 as described above. The brush 13 of the rotor 14 driven by the motor 10 is used as the position detection circuit 56 for the circuit board 12. Since the rotational position of the closing member 9 can be detected by sliding contact with the contact portion 57, the structure for detecting the rotating position of the closing member 9 can be simplified. The circuit board 12 since the position detecting circuit 56 corresponding to a single circuit board 12 in four閉子9 is provided can be easily well in this respect structure one. Since the circuit board 12 is also provided with a motor circuit 16, wiring for supplying power to the motor 10 and controlling the motor 10 can be simplified. In addition, the motor 10 and the motor circuit 16 include a connector 78 and a connector 17. Thus, wiring can be facilitated and wiring errors can be eliminated.
[0023]
The main closing hole 36 of the closing member 9 is composed of a circular hole 36a and a pair of wedge-shaped grooves 36b and 36c communicating with the hole 36a. The small fire closing hole 37 also includes a circular hole portion 37a and a pair of wedge-shaped grooves 37b and 37c communicating with the hole portion 37a. R portions 79 are provided at least on the shoulders on both sides of the wedge-shaped grooves 36b and 36c of the main closing hole 36. When the closing member 9 is rotatably stored in the closing member receiving hole 8 of the valve housing 7, grease is interposed between them, but if the R portion 79 is provided as described above, the closing member 9 It is possible to prevent grease from clogging the wedge-shaped grooves 36b and 36c when rotating. That is, if the shoulders of the wedge-shaped grooves 36b and 36c are edges, the grease is scraped off when the closing member 9 is rotated, and the wedge-shaped grooves 36b and 36c are clogged with grease, and normal flow characteristics cannot be obtained. If the R portion 79 is provided, the grease does not clog the wedge-shaped grooves 3b and 36c, and an accurate flow rate characteristic is obtained.
[0024]
【The invention's effect】
In the first aspect of the present invention, as described above, the plurality of flow rate adjusting parts are separated from one main valve main body, and the flow rate adjusting parts are provided in the valve housing and a closing hole in the valve housing. Since each flow rate adjustment part is detachably attached to the above main valve body separately, even if a defect occurs in the flow rate adjustment part, which is a precision part, the original valve body remains as it is. It is only necessary to replace the flow rate adjustment part for defective parts, which can improve the yield and reduce the cost, and the flow adjustment part even if rotational torque is applied to the main valve body when piping to the gas inlet In this respect, the occurrence of defects can be prevented.
[0025]
Further, the invention according to claim 2 of the present invention is that in claim 1, since the motor and each of the closing members are connected so that the closing member is driven to rotate by the motor, the closing member can be driven by the motor to adjust the flow rate. Can be easily performed with a touch panel, etc., and a position detector that detects the rotational position of the closing element of each flow rate adjustment unit is provided, so that the position of the closing element can be detected and accurately controlled even if it is driven by a motor. It can be done.
[0026]
According to a third aspect of the present invention, in the second aspect, the position detector includes a circuit board, a metal brush that is in sliding contact with the circuit board, a brush attached and fixed, and a unit that rotates integrally with the closing member. And a housing for housing these, the structure for detecting the position can be simplified by detecting the position by sliding the brush against the circuit of the circuit board. Since the rotor is individually provided for a plurality of flow rate adjusting sections and the circuit board is provided with a plurality of circuits integrally, only one circuit board is required, and the structure can be simplified in this respect as well. It is.
[0027]
The circuit board according to claim 4 of the present invention is the circuit board according to claim 3, wherein the circuit board is provided with a motor circuit and a connector connected to the motor. Wiring for supplying power to the motor and controlling the motor can be provided, and the motor circuit on the circuit board and the motor can be connected to each other by a connector so that assembly can be facilitated and wiring errors can be eliminated.
[0028]
According to a fifth aspect of the present invention, in the second to fourth aspects of the present invention, the position detector includes a circuit board, a metal brush that is in sliding contact with the circuit board, and a brush attached and fixed. And a housing for housing these components, and the housing is provided with restricting means for restricting the rotation range of the rotor. Therefore, even if the position detector breaks down, the rotor remains at a predetermined angle or more. The rotation can be prevented and the overrun of the rotation of the closing member can be prevented.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a gas source valve portion as an example of an embodiment of the present invention as viewed from the front.
FIG. 2 is a cross-sectional view seen from the same plane.
FIG. 3 is a plan view of the same.
FIG. 4 is a side view of the above.
FIG. 5 is a schematic system diagram of the entire gas stove.
FIG. 6 is an exploded plan view of the gas main valve portion.
FIG. 7 is an exploded cross-sectional view of the gas main valve portion.
FIG. 8 is an exploded perspective view of the motor and the position detector part.
FIGS. 9A and 9B show the same rotor portion, and FIGS. 9A and 9B are perspective views as seen from different directions. FIGS.
10A is a rear view, FIG. 10B is a plan view, FIG. 10C is a front view, FIG. 10D is a cross-sectional view taken along line HH in FIG. 10E, and FIG. It is the JJ sectional view taken on the line (c).
FIGS. 11A and 11B are cross-sectional views illustrating attachment of a circuit board to a housing.
12A is a plan view, FIG. 12B is a front view, FIG. 12C is a cross-sectional view seen from the front, and FIG. 12D is a cross-sectional view taken along the line KK in FIG. (E) is the LL sectional view taken on the line of (c), (f) is sectional drawing seen from the side surface of (d).
13A and 13B show the same mounting plate, where FIG. 13A is a plan view, FIG. 13B is a front view, and FIG. 13C is a side view.
14A is a plan view, FIG. 14B is a front view, FIG. 14C is a left side view, and FIG. 14D is a right side view.
15A is a plan view, FIG. 15B is a sectional view seen from the front, and FIG. 15C is a side view.
16A and 16B show the rotor of the same, where FIG. 16A is a cross-sectional view seen from the front, FIG. 16B is a left side view, and FIG. 16C is a right side view.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Gas inlet 2 Gas outlet 3a Branch flow path 4 Main valve body 5 Burner 6 Flow rate adjustment part 7 Valve housing 8 Closure accommodation hole 9 Closure 10 Motor 11 Position detector 12 Circuit board 13 Brush 14 Rotor 16 Motor circuit 17 connector

Claims (5)

1つのガス入口と複数のガス出口とを複数の分岐流路で連通させた元弁本体をガス器具に設けると共に各ガス出口を複数のバーナに夫々連通させ、元弁本体の複数の分岐流路に夫々別々に閉子式の流量調整部を設けてガスを供給するようにしたガス器具の流量調整装置おいて、1つの元弁本体に対して上記複数個の流量調整部を別体にし、流量調整部を弁筐体と弁筐体内の閉子収納孔に回転自在に装着した閉子とで形成し、各流量調整部を夫々別々に上記元弁本体に着脱自在に取り付けたことを特徴とするガス器具の流量調整装置。A main valve body in which one gas inlet and a plurality of gas outlets communicate with each other through a plurality of branch flow paths is provided in the gas appliance, and each gas outlet is communicated with a plurality of burners, so that a plurality of branch flow paths in the main valve body are provided. each and separately provided flow rate adjusting section of閉子formula Oite the flow control device of the gas appliance to supply the gas, to separate the plurality of flow rate adjusting portion for one main valve body The flow rate adjusting part is formed by a valve housing and a closing member rotatably attached to a closing hole in the valve case, and each flow rate adjusting part is detachably attached to the original valve body separately. A flow adjustment device for gas appliances. モータで上記閉子が回転駆動されるようにモータと各閉子とを連結し、各流量調整部の閉子の回転位置を検出する位置検出器を設けたことを特徴とする請求項1記載のガス器具の流量調整装置。  2. A position detector for detecting the rotational position of the closing member of each flow rate adjusting unit is provided, wherein the closing member is connected to the motor so that the closing member is driven to rotate by a motor. Gas appliance flow control device. 前記位置検出器は、回路基板と、回路基板に摺接する金属製のブラシと、ブラシが取り付け固定されると共に閉子と一体に回転するロータと、これらを収納するハウジングとで構成され、上記ロータは複数個の流量調整部に対して個々に設けられ、且つ回路基板は複数個分の回路が一体に設けられたことを特徴とする請求項2記載のガス器具の流量調整装置。  The position detector includes a circuit board, a metal brush that is in sliding contact with the circuit board, a rotor that is attached and fixed to the brush, and that rotates integrally with the closing member, and a housing that houses these rotors. 3. The gas appliance flow rate adjusting device according to claim 2, wherein the circuit board is individually provided for a plurality of flow rate adjusting parts, and the circuit board is integrally provided with a plurality of circuits. 前記回路基板にはモータ用回路が形成されると共にモータに接続するコネクターが設けられたことを特徴とする請求項3記載のガス器具の流量調整装置。  4. The gas appliance flow rate adjusting device according to claim 3, wherein a motor circuit is formed on the circuit board and a connector connected to the motor is provided. 前記位置検出器は、回路基板と、回路基板に摺接する金属製のブラシと、ブラシが取り付け固定されると共に閉子と一体に回転するロータと、これらを収納するハウジングとで構成され、ハウジングにはロータの回転範囲を規制する規制手段が設けられたことを特徴とする請求項2乃至請求項4のいずれかに記載のガス器具の流量調整装置。  The position detector includes a circuit board, a metal brush that is in sliding contact with the circuit board, a rotor on which the brush is attached and fixed, and a rotor that rotates integrally with the closing member, and a housing that houses them. 5. The gas appliance flow rate adjusting device according to claim 2, further comprising a regulating means for regulating a rotation range of the rotor.
JP2001017337A 2001-01-25 2001-01-25 Gas appliance flow control device Expired - Fee Related JP4422351B2 (en)

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JP4842228B2 (en) * 2007-08-10 2011-12-21 リンナイ株式会社 Electric valve unit device
CN102080733B (en) * 2010-12-31 2012-05-09 浙江新涛电子机械股份有限公司 Universal electronic-control gas valve for three gases
JP5978534B2 (en) * 2014-02-05 2016-08-24 リンナイ株式会社 Gas stove device

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