Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/zhenxiangba/zhenxiangba.com/public_html/phproxy-improved-master/index.php on line 456
JP4285809B2 - Deicing operation method in ice making machine - Google Patents
[go: Go Back, main page]

JP4285809B2 - Deicing operation method in ice making machine - Google Patents

Deicing operation method in ice making machine Download PDF

Info

Publication number
JP4285809B2
JP4285809B2 JP27368698A JP27368698A JP4285809B2 JP 4285809 B2 JP4285809 B2 JP 4285809B2 JP 27368698 A JP27368698 A JP 27368698A JP 27368698 A JP27368698 A JP 27368698A JP 4285809 B2 JP4285809 B2 JP 4285809B2
Authority
JP
Japan
Prior art keywords
ice making
water
ice
water tray
tray
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP27368698A
Other languages
Japanese (ja)
Other versions
JP2000105037A (en
Inventor
千美 鳥谷
文雄 丸山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoshizaki Electric Co Ltd
Original Assignee
Hoshizaki Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hoshizaki Electric Co Ltd filed Critical Hoshizaki Electric Co Ltd
Priority to JP27368698A priority Critical patent/JP4285809B2/en
Publication of JP2000105037A publication Critical patent/JP2000105037A/en
Application granted granted Critical
Publication of JP4285809B2 publication Critical patent/JP4285809B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25CPRODUCING, WORKING OR HANDLING ICE
    • F25C1/00Producing ice
    • F25C1/04Producing ice by using stationary moulds
    • F25C1/045Producing ice by using stationary moulds with the open end pointing downwards

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Production, Working, Storing, Or Distribution Of Ice (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は製氷機に関し、特に、製氷機における除氷運転方法に関する。
【0002】
【従来の技術】
製氷機の一形式として、例えば、特開昭60−259879号公報に示されているように、下方に開口する複数の製氷室を有する製氷器と、同製氷器の下方にて上下動可能に配置されて前記各製氷室の下端開口部を閉塞する水皿と、同水皿を下動して前記製氷器の各製氷室を開放する駆動手段を備えた形式の製氷機がある。当該形式の製氷機においては、製氷器の各製氷室を水皿にて閉塞した状態で、前記製氷器に冷却媒体を供給しつつ、かつ、前記水皿の各噴出孔から前記各製氷室に製氷用水を供給しつつ製氷運転を行うとともに、製氷運転終了後に除氷運転を行って、生成された氷を製氷機から排出するようになっている。
【0003】
また、製氷運転終了後の除氷運転では、製氷器にホットガスを供給しての各製氷室と水皿間に形成される氷を融解しつつ水皿を駆動手段の作動による下動させて製氷器から引剥がし、製氷器から融解して離脱する氷を引剥がされた水皿上に受承するもので、水皿上に受承された氷は適宜の手段にて水皿上から排出される。
【0004】
【発明が解決しようとする課題】
ところで、当該形式の製氷機においては、水皿は除氷運転開始直後には氷を介して製氷器と凍結状態にあって、水皿を製氷器から引剥がすには駆動手段および水皿に対しては過大な負荷が付与されることになり、かつ、過大な負荷に起因して駆動手段および水皿には損傷が発生し易い。この問題に対処すべく、上記公報に示された製氷機においては、除氷運転開始から所定時間経過した後に駆動手段を作動して水皿を下動する手段を採用し、この間に、ホットガスに起因する氷の融解を促進させて、各製氷室の氷と水皿との凍結状態を緩和することにより、駆動手段および水皿に対する過大な負荷を低減するようにしている。
【0005】
しかしながら、除氷運転方法において、除氷運転開始から所定時間経過した後に駆動手段を作動して水皿を下動する手段を採用する場合には、氷と水皿との凍結状態を緩和させるには多くの時間を必要とし、製氷効率を低下させることになる。また、製氷効率を挙げるべく、除氷運転開始から駆動手段を作動させるまでの時間を短縮すると、駆動手段および水皿に対しては過大な負荷を低減させる効果は大きく低下する。
【0006】
従って、本発明の目的は、多くの時間を要することなく氷と水皿との凍結状態を緩和して、水皿を製氷器からの剥離を容易にすることにある。
【0007】
【課題を解決するための手段】
本発明は、製氷機における除氷運転方法に関し、特に、下方に開口する複数の製氷室をを有する製氷器と、前記各製氷室に製氷用水を供給する複数の噴出孔を有し前記製氷器の下方にて上下動可能に配置されて前記各製氷室の下端開口部を閉塞する水皿と、前記水皿を下動して前記各製氷室を開放する駆動手段を備え、前記製氷器の各製氷室を前記水皿にて閉塞した状態で、前記製氷器に冷却媒体を供給しつつ、かつ、前記水皿の各噴出孔から前記各製氷室に製氷用水を供給しつつ製氷運転を行う形式の製氷機を適用対象とするものである。
【0008】
しかして、本発明は、上記した形式の製氷機における製氷運転終了後に行う除氷運転方法であって、製氷運転終了後に、前記製氷器にホットガスを供給して前記各製氷室と前記水皿間に形成される氷を融解しつつ前記水皿を前記駆動手段の作動により下動させて前記製氷器から引剥がし、前記製氷器から融解して離脱する氷を引剥がされた前記水皿上に受承する除氷運転方法であり、前記製氷器にホットガスを供給して前記各製氷室と前記水皿間に形成される氷の融解を開始すると同時に前記水皿上へ給水するとともに、前記製氷器への製氷用水の供給を継続して、前記水皿を前記駆動手段の作動により下動させて前記製氷器から引剥がすことを特徴とするものである。
【0009】
本発明に係る除氷運転を適用対象とする製氷機においては、前記水皿から流出する水を収容する製氷用水タンクを備え、同製氷用水タンクから前記製氷器に製氷用水供給するように構成されていることが好ましい。
【0010】
【発明の作用・効果】
本発明に係る除氷運転方法によれば、徐氷運転時における水皿22の駆動手段の作動による下動前に、水皿上への供給される水と製氷器へ継続して供給される製氷用水の両水により、製氷器の各製氷室と水皿間に形成される氷の融解が促進されて氷と水皿との凍結状態が早期に緩和され、水皿の製氷器からの剥離が容易になる。このため、除氷運転時における駆動手段および水皿に対する負荷を低減させることができて、過大な負荷に起因する駆動手段および水皿の損傷の発生が防止される。駆動手段に対する負荷の低減は、駆動手段の小型化を可能にし、製氷機のコストの低減を図ることができる。
【0011】
また、本発明に係る除氷運転によれば、水皿上および製氷器に供給された水は氷により冷却されて製氷用水タンクに還流し、これを引続き行われる製氷運転時に製氷用水として使用することができ、製氷機の製氷能力を増大させることができる。
【0012】
【発明の実施の形態】
以下、本発明を図面に基づいて説明すると、図1および図2は、袋詰めされた平板状の氷11を示している。氷11は、図3に示す氷製造装置を構成する製氷機20にて製造され、製氷機20の前側に配設されている袋詰装置30にて袋詰めされたものである。
【0013】
図1および図2に示す氷11は、平板状の連結部11aと、連結部11a上に一体的に形成されて多数のスリット11bにて区画された多数の角氷部11cにて構成されている。氷11は、上下2枚の樹脂フィルム12a,12bからなる透明な袋12に収容されていて、使用時には、氷11は袋12から取出されて、各角氷部11cを各スリット11bに沿って分離して個々に角氷とされる。
【0014】
当該氷製造装置を構成する製氷機20は、図3および図4に示すように、機台のフレームF1の上方部に配設した製氷部20aおよび可動機構部20bと、フレームF1の底部の隅部に配設した製氷用水タンク20cを備えている。
【0015】
製氷部20aは、製氷器21および水皿22を備えているもので、製氷器21は、頂壁部を有して下方へ開口する方形箱状の枠部21aと、枠部21a内に位置して同枠部21a内を多数の製氷室21bに区画する多数の仕切壁21cと、枠部21aの頂壁部に配置した冷却部21dからなり、仕切壁21cは枠部21aの周囲壁部よりわずかに短く形成されている。製氷室21bは、氷11の各角氷部11cに対応する形状を呈している。冷却部21dは、熱伝導性の良好なパイプを多数回屈曲して形成した蒸発器であって、製氷運転時には、内部を流通する冷却媒体にて製氷器21の各製氷室21b内を冷却し、除氷運転時には、内部に供給されるホットガスにて製氷室21の各製氷室21b内の氷を融解させる。
【0016】
水皿22は、後述する可動機構部20bにて支持されて製氷部20aの下方に配置されているもので、上方皿部22aと、上方皿部22aの下面側に配置された複数本の給水通路22bと、上方皿部22aから流下する水を下方の製氷用水タンク20cへ導くロート状の捕集水部22cからなり、上方皿部22aの上面および給水通路22bの上面には、各製氷室21bの下端開口部に対向する噴出孔22dが形成されている。
【0017】
給水通路22bは、製氷用水タンク20cに設けた給水ポンプ23aに連結ホース23bを介して連結されており、給水ポンプ23aの駆動により、製氷用水タンク20c内に貯留する製氷用水が給水通路22bへ給水されるように構成されている。供給された製氷用水は、各噴出孔22dを通して各製氷室21bに供給される。
【0018】
また、上方皿部22aの上面前端部には、複数個のリブ22eが形成されている。各リブ22eは三角形の山形状のもので、前端縁側が漸次高くなるように上方へ突出する山形状を呈しており、左右方向に所定間隔を保持して互いに並列している。
【0019】
水皿22は、上方皿部22aの上面を製氷器21の枠部21aにおける周囲壁部の下端に当接した状態で配設されていて、上方皿部22aの上面と各仕切壁21cの下端との間には、所定の隙間が確保されている。この隙間は、平板状の氷11の連結部11aを形成するもので、この連結部11aには各製氷室21bにて形成される各角氷11bが一体的に結合される。なお、上方皿部22aの上面には、フレームF1に設けた給水管23cを通して図示しない給水源からも給水されるようになっている。
【0020】
可動機構部20bは、駆動アーム24、第1,第2,第3連結アーム25a,25b,25c、テンションスプリング26a、および引張ワイヤ26bを左右一対備えているとともに、押動ロッド27および駆動モータ28を備えている。駆動アーム24は、円形状本体24aと、その外周縁から直交して延びるアーム部24bとからなるもので、左右の両駆動アーム24は回転軸24cを介して互いに連結されている。回転軸24cは、駆動アーム24の円形状本体24aにおける中心部から偏倚した部位に連結されていて、各駆動アーム24をアーム部24bが垂直上方へ突出した状態に起立させ、円形状本体24aの外周の下端縁部を水皿22の左右の各側縁部上に当接させている。これにより、駆動アーム24の円形状本体24aは水皿22を押圧するカムとして機能する。
【0021】
各連結アーム25a,25b,25cのうち、第1連結アーム25aは駆動アーム24と水皿22を連結するもので、その上端部にて駆動アーム24のアーム部24bの上端部に回動可能に連結され、かつ、その下端部にて水皿22の捕集水部22cの側部に連結されている。第1連結アーム25aの下端部には長手方向方向に延びる長穴25a1が形成されていて、捕集水部22cの側部前側に突設した連結ピン22c1が長穴25a1に移動可能に嵌挿されて、第1連結アーム25aと水皿22が連結されている。
【0022】
第2連結アーム25bは、駆動アーム24と第3連結アーム25cとを連結するもので、その一端部にて駆動アーム24の円形状本体24aに回動可能に連結され、かつ、その他端部にてフレームF1に回動可能に支持した第3連結アーム25cの一端部に連結されている。第2連結アーム25bの一端部は、駆動アーム24の円形状本体24aにおける回転軸24cの連結部位より高い部位に連結されている。また、第2連結アーム25bの他端部には、長手方向に延びる長穴25b1が形成されていて、第3連結アーム25cの一端部を捕集水部22cの側部の回動可能に連結する連結ピン25c1が長穴25b1の移動可能に嵌挿されて、第2連結アーム25bが駆動アーム24と第3連結ピン25cとに連結されている。
【0023】
可動機構部20bにおいては、駆動アーム24、第1,第2,第3連結アーム25a,25b,25cにて水皿22を支持して、水皿22を製氷部20aにおける製氷器21の下方に位置させている。
【0024】
押動ロッド27は、水皿22の捕集水部22cにおける左右上端部に移動可能に載置されているもので、押動ロッド27の左右の各端部には、捕集水部22cの後端壁部に掛止した左右一対のテンションスプリング26aが掛止されている。また、押動ロッド27の各端部には、一端をフレームF1の側部に掛止した引張ワイヤ26bの他端が連結されている。引張ワイヤ26bは、押動ロッド27の端部から下降傾斜して、水皿22の捕集水部22cの側部に突設した係合ピン22fの所定量下方を通って前端側へ延びている。
【0025】
当該製氷機20は、図示しない公知の制御装置により、製氷運転、水皿下降、除氷運転、水皿上昇の4工程の作動を制御されるもので、運転停止時においては、製氷部20aおよび可動機構部20bは図4および図5(a)に示す状態にある。この状態では、製氷器21の製氷室21bは水皿22の上方皿部22aにて閉塞されており、製氷運転時には、公知の冷凍装置から冷却部21dへ冷却媒体が循環供給されて製氷室21dが冷却される。この間、給水ポンプ23aの駆動により、製氷用水タンク20c内の製氷用水が水皿22の給水通路22bに供給され、供給された製氷用水は各噴出孔22dから噴出して各製氷室21dに供給される。供給された製氷用水の一部は製氷室21bにて氷結し、残りは捕集水部22cを経て製氷用水タンク20cに還流する。
【0026】
所定時間製氷運転を行うと、製氷室21bと上方皿部22a間で平板状の氷11が形成され、製氷器21に設けた図示しないサーミスタがこれを検知し、製氷完了の検出信号を制御装置に出力する。この結果、制御装置は製氷機20を製氷運転から除氷運転に切替えるとともに、可動機構部20bを駆動させる。
【0027】
除氷運転では、製氷器21の冷却部21dに公知の冷凍装置からホットガスが供給されるとともに、各噴出孔22dからの製氷用水の供給が継続され、同時に給水管23cから製氷用水が水皿22の上方皿部22a上に散水供給される。この間に供給された製氷用水は、捕集水部22cを経て製氷用水タンク20cに還流する。これにより、水皿22の上方皿部22aが製氷室21bに形成された氷11から剥離し易い状態を形成する。
【0028】
製氷用水の製氷用水タンク20cからの供給、および給水管23cからの供給は、制御装置にてタイマ制御されていて所定時間経過後に停止され、その後、可動機構部20bの駆動が開始される。可動機構部20bの駆動開始は駆動モータ28の駆動によりなされる。駆動モータ28の駆動により、駆動アーム24は図示時計方向に回動される。
【0029】
駆動アーム24の回動により、円筒状本体24aは押圧カムとして機能して、図5(b)に示すように回動して水皿22を押下げて、水皿22を製氷器21に凍結している氷11から剥離させる。この間、第1連結アーム25aおよび第2連結アーム25bは、駆動アーム24の回動に伴って回動しつつ下方へ移動しようとするが、水皿22が氷11から剥離するまでは、各連結アーム25a,25bに設けた長穴25a1,25b1と、連結ピン22c1,25c1との作用により、両連結アーム25a,25bの移動は規制される。
【0030】
水皿22が氷11から剥離すると、第1,第2連結アーム25a,25bは、駆動アーム24の回動に伴って回動しつつ下方へ移動して第3連結アーム25cを回動させ、水皿22はこれらの連結アーム25a〜25cに支持されて、水平状態を保持して漸次下降する。この間、駆動アーム24の回転軸24cに設けた突起24dがスイッチsw1に当接し、スイッチsw1は動作して駆動モータ28を停止させ、水皿22を図5(c)に示すように、製氷器21の所定量下方にて水平状態に支持される。
【0031】
また、スイッチsw1の動作により、給水管23cから水皿22の上方皿部22a上へ所定時間給水されて、上方皿部22aの上面に凍結している残氷を溶解して上方皿部22aの上面を清掃する。給水管23から所定時間給水された水は捕集水部22cを経て製氷用水タンク20cに流出される。製氷器21の製氷室21bに凍結している氷11は、冷却部21dに供給されているホットガスの融解作用、各供給水の融解作用にて製氷室21bから離脱して、水皿22の上方皿部22aの上面にゆっくりと落下する。
【0032】
氷11の上方皿部22aの上面への落下は、製氷器21に設けた図示しないサーミスタにより検知され、冷却部21dへのホットガスの供給が停止されて除氷運転が終了し、製氷機20は製氷運転が開始できる状態に切替わる。
【0033】
また、駆動モータ28の駆動が再開されて、駆動アーム24はさらに図示時計方向への回動する。このため、第1,第2連結アーム25a,25bはさらに回動しつつ下方へ移動して、第1連結アーム25aは水皿22の前端側を下方へ押動して水皿22を回動させ、図5(d)に示すように、前方へ下降傾斜する傾斜状態とする。
【0034】
この水皿22の前方への回動動作時には、引張ワイヤ26bが水皿22に設けた係合ピン22fに係合され、引張ワイヤ26bは係合ピン22fにより下方へ引張られる。この結果、両引張ワイヤ26bに連結されている押動ロッド27がテンションスプリング26aに抗して前方へ引張られて、押動ロッド27は図5(d)に示すように、氷11を背部から押動しつつ前方へ所定量移動する。これにより、氷11は平板状の状態で、水皿22の上方皿部22aの上面を滑動して前端縁部の各リブ22e上に乗り上げ、上方皿部22aの上面との間に隙間を形成して非密着状態として滑らかに前方へ移動して、前方に配設した袋詰装置30に搬送される。
【0035】
この時点では、駆動アーム24の突起24dはスイッチsw2に当接して、スイッチsw2を動作して駆動モータ28を一旦停止させ、次いで、駆動モータ28を逆転駆動させて駆動アーム24を図示反時計方向へ回動させる。駆動アーム24が図示反時計方向へ回動して突起24dがスイッチsw3に当接すると、スイッチsw3が動作して駆動モータ28を停止して、駆動アーム24の回動を停止させる。その後、給水ポンプ23aが駆動して、製氷用水を製氷器21の製氷室21bに供給して製氷運転が再開される。
【0036】
駆動アーム24が回動復帰する間、各連結アーム25a,25b,25cは駆動アーム24の回動に伴い、水皿22の下降時とは逆の方向へ回動して上方へ移動し、水皿22を図5(d)に示す下降傾斜状態から同図(c)および(b)に示す水平状態を経て、同図(a)に示す製氷運転可能状態に復帰させる。
【0037】
製氷機20における以上の動作は、図示しない制御装置により制御されるもので、製氷運転から除氷運転終了時までのタイムチャートを図6に示す。
【0038】
なお、袋詰装置30側に搬送された氷11は、押動機構30aに押動されて、両樹脂フィルム12a,12b間に挿入され、シール機構30bにて両樹脂フィルム12a,12bをシールして袋詰めされるとともに、切断機構30cにて袋12の後側シール部の後方を切断されて、図示しない冷凍ストーカへ搬送される。
【0039】
このように、当該製氷機20の除氷運転方法によれば、除氷運転の開始時に水皿22上へ供給される水と製氷器21へ継続して供給される製氷用水の両水により、製氷器21の各製氷室21bと水皿22の上方皿部22a間に形成される氷の融解が促進されて氷と水皿22との凍結状態が早期に緩和され、水皿22の製氷器21からの剥離が容易になる。このため、除氷運転時における可動機構部20bおよび水皿22に対する負荷を低減させることができて、過大な負荷に起因する可動機構部20bおよび水皿22の損傷の発生が防止される。可動機構部20bに対する負荷の低減は、可動機構部20bの小型化を可能にし、製氷機20のコストの低減を図ることができる。
【0040】
また、当該製氷機20の除氷運転によれば、水皿22および製氷器21に供給された水は氷により冷却されて製氷用水タンク20cに還流し、これを引続き行われる製氷運転時に製氷用水として使用することができるため、製氷機20の製氷能力を増大させることができる。
【図面の簡単な説明】
【図1】本発明に係る除氷運転を適用して生成された氷を袋詰めした状態を示す斜視図である。
【図2】同袋詰め氷の縦断面図である。
【図3】同除氷運転を適用する製氷機を構成部とする氷製造装置の概略構成図である。
【図4】同製氷機の概略側面図である。
【図5】同製氷機の除氷運転時における作動を示す側面図(a)〜(d)である。
【図6】同製氷機における製氷運転開始から除氷運転終了までの動作状態を示すタイムチャートである。
【符号の説明】
11…氷、11a…連結部、11b…スリット、11c…角氷部、12…袋、12a,12b…樹脂フィルム、20…製氷機、20a…製氷部、20b…可動機構部、20c…製氷水タンク、21…製氷器、21a…枠部、21b…製氷室、21c…仕切壁、21d…冷却部、22…水皿、22a…上方皿部、22b…給水通路、22c…捕集水部、22c1…連結ピン、22d…噴出孔、22e…リブ、22f…係合ピン、23a…給水ポンプ、23b…連結ホース、23c…給水管、24…駆動アーム、24a…円形状本体、24b…アーム部、24c…回転軸、24d…突起、25a…第1連結アーム、25a1…長穴、25b…第2連結アーム、25b1…長穴、25c…第3連結アーム、25c1…連結ピン、26a…テンションスプリング、26b…引張ワイヤ、27…押動ロッド、28…駆動モータ、F1…フレーム、sw1、sw2、sw3…スイッチ。
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an ice making machine, and more particularly to a deicing operation method in an ice making machine.
[0002]
[Prior art]
As one type of ice making machine, for example, as disclosed in Japanese Patent Application Laid-Open No. 60-259879, an ice making machine having a plurality of ice making chambers opened downward, and can be moved up and down below the ice making machine. There is a type of ice making machine that is provided with a water tray that is disposed and closes a lower end opening of each ice making chamber, and a driving means that moves down the water tray to open each ice making chamber of the ice making machine. In this type of ice making machine, each ice making chamber of the ice making machine is closed with a water dish, while supplying a cooling medium to the ice making machine, and from each ejection hole of the water dish to each ice making room. The ice making operation is performed while supplying ice making water, and the deicing operation is performed after the ice making operation is completed, and the generated ice is discharged from the ice making machine.
[0003]
In addition, in the deicing operation after the ice making operation is completed, the water tray is moved down by the operation of the driving means while melting the ice formed between each ice making chamber and the water tray by supplying hot gas to the ice maker. The ice that is peeled off from the ice maker and melted away from the ice maker is received on the peeled water tray. The ice received on the water tray is discharged from the water tray by appropriate means. Is done.
[0004]
[Problems to be solved by the invention]
By the way, in the ice making machine of this type, the water tray is in a frozen state with the ice maker immediately after the start of the deicing operation, so that the water tray is peeled off from the ice making device with respect to the driving means and the water tray. As a result, an excessive load is applied, and the driving means and the water pan are easily damaged due to the excessive load. To address this problem, in the ice making machine shown in the above publication employs a means for downward movement of water pan by operating the drive means after a predetermined time has elapsed since the deicing operation starts, during which the hot gas by promoting the melting of ice caused by, by relaxing the frozen state of ice and water tray of the ice making compartment, so as to reduce an excessive load against the drive means and the water tray.
[0005]
However, in the deicing operation method, when adopting a means for operating the driving means to lower the water dish after a predetermined time has elapsed from the start of the deicing operation, the frozen state between the ice and the water dish is alleviated. Requires a lot of time and reduces ice making efficiency. Further, if the time from the start of the deicing operation to the operation of the driving means is shortened so as to increase the ice making efficiency, the effect of reducing an excessive load on the driving means and the water pan is greatly reduced.
[0006]
Accordingly, an object of the present invention is to alleviate the frozen state of ice and a water tray without requiring much time, and to facilitate the peeling of the water tray from the ice making device.
[0007]
[Means for Solving the Problems]
The present invention relates to a deicing operation method in an ice making machine, and in particular, an ice making device having a plurality of ice making chambers opening downward, and a plurality of jet holes for supplying ice making water to each ice making chamber. of water dish is movable up and down disposed to close the lower end opening of each of the ice making chamber at the lower, provided with a driving means for opening the respective ice making chamber moves downward the water tray, the ice maker of An ice making operation is performed while supplying a cooling medium to the ice making device and supplying ice making water to each ice making chamber from each ejection hole of the water tray in a state where each ice making chamber is closed with the water tray. Applicable to ice-making machines of the type.
[0008]
Thus, the present invention is a deicing operation method performed after the ice making operation in the ice making machine of the above-described type, and after the ice making operation is completed , hot gas is supplied to the ice making device to each ice making chamber and the water dish. The water tray is moved down by the operation of the driving means while melting the ice formed between the ice maker and peeled off from the ice maker, and the ice that melts away from the ice maker is peeled off on the water tray in a deicing operation method of nest, as well as water supply to the ice maker in the supplying hot gas to initiate melting of the ice formed between the water tray and the respective ice making chamber simultaneously on the water tray, The supply of ice-making water to the ice maker is continued , and the water tray is moved down by the operation of the driving means to be peeled off from the ice maker .
[0009]
The ice making machine to which the deicing operation according to the present invention is applied includes an ice making water tank that stores water flowing out from the water tray, and is configured to supply ice making water from the ice making water tank to the ice making device. It is preferable that
[0010]
[Operation and effect of the invention]
According to the deicing operation method of the present invention , the water supplied onto the water tray and the ice maker are continuously supplied before the water tray 22 is moved down by the operation of the driving means of the water tray 22 during the slow ice operation. Both ice making water promotes the melting of the ice formed between each ice making chamber and the water tray of the ice maker, and the freezing state between the ice and the water tray is eased early, and the water tray is detached from the ice maker. Becomes easier. For this reason, it is possible to reduce the load on the driving means and the water tray during the deicing operation, and it is possible to prevent the driving means and the water tray from being damaged due to an excessive load. The reduction of the load on the drive means enables the drive means to be miniaturized and the cost of the ice making machine can be reduced.
[0011]
Further, according to the deicing operation of the present invention, the water supplied to the water tray and the ice maker is cooled by ice and returned to the ice making water tank, which is used as ice making water during the subsequent ice making operation. The ice making capacity of the ice making machine can be increased.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described with reference to the drawings. FIG. 1 and FIG. 2 show a flat ice 11 packed in a bag. The ice 11 is manufactured by the ice making machine 20 constituting the ice manufacturing apparatus shown in FIG. 3, and is packed in a bag by a bagging apparatus 30 disposed on the front side of the ice making machine 20.
[0013]
The ice 11 shown in FIG. 1 and FIG. 2 is composed of a plate-like connecting portion 11a and a large number of ice cube portions 11c that are integrally formed on the connecting portion 11a and partitioned by a large number of slits 11b. Yes. The ice 11 is accommodated in a transparent bag 12 composed of two upper and lower resin films 12a and 12b. In use, the ice 11 is taken out from the bag 12, and each ice cube 11c is moved along each slit 11b. Separated into individual ice cubes.
[0014]
As shown in FIGS. 3 and 4, the ice making machine 20 constituting the ice making apparatus includes an ice making part 20a and a movable mechanism part 20b disposed above the frame F1 of the machine base, and a corner at the bottom of the frame F1. An ice-making water tank 20c disposed in the section is provided.
[0015]
The ice making unit 20a includes an ice making device 21 and a water tray 22, and the ice making device 21 has a rectangular box-shaped frame portion 21a having a top wall portion and opening downward, and is positioned in the frame portion 21a. And a plurality of partition walls 21c for partitioning the inside of the frame portion 21a into a plurality of ice making chambers 21b, and a cooling portion 21d disposed on the top wall portion of the frame portion 21a. The partition wall 21c is a peripheral wall portion of the frame portion 21a. It is formed slightly shorter. The ice making chamber 21 b has a shape corresponding to each ice cube 11 c of the ice 11. The cooling unit 21d is an evaporator formed by bending a pipe having good thermal conductivity many times, and during ice making operation, the inside of each ice making chamber 21b of the ice making device 21 is cooled by a cooling medium flowing through the inside. During the deicing operation, the ice in each ice making chamber 21b of the ice making chamber 21 is melted by hot gas supplied to the inside.
[0016]
The water tray 22 is supported by a movable mechanism section 20b, which will be described later, and is disposed below the ice making section 20a. The upper dish section 22a and a plurality of water supplies disposed on the lower surface side of the upper dish section 22a. Each of the ice making chambers includes a passage 22b and a funnel-shaped collecting water portion 22c that guides the water flowing down from the upper tray portion 22a to the lower ice-making water tank 20c, and the upper surface of the upper tray portion 22a and the upper surface of the water supply passage 22b. An ejection hole 22d facing the lower end opening of 21b is formed.
[0017]
The water supply passage 22b is connected to a water supply pump 23a provided in the ice making water tank 20c via a connection hose 23b, and the ice making water stored in the ice making water tank 20c is supplied to the water supply passage 22b by driving the water supply pump 23a. It is configured to be. The supplied ice making water is supplied to each ice making chamber 21b through each ejection hole 22d.
[0018]
A plurality of ribs 22e are formed on the front end portion of the upper surface of the upper dish portion 22a. Each rib 22e has a triangular mountain shape, has a mountain shape that protrudes upward so that the front edge side gradually becomes higher, and is parallel to each other while maintaining a predetermined interval in the left-right direction.
[0019]
The water dish 22 is disposed in a state where the upper surface of the upper dish part 22a is in contact with the lower end of the peripheral wall part in the frame part 21a of the ice maker 21, and the upper surface of the upper dish part 22a and the lower end of each partition wall 21c. A predetermined gap is secured between the two. The gap forms a connecting portion 11a of the flat ice 11, and each ice cube 11b formed in each ice making chamber 21b is integrally coupled to the connecting portion 11a. In addition, water is supplied to the upper surface of the upper dish portion 22a from a water supply source (not shown) through a water supply pipe 23c provided in the frame F1.
[0020]
The movable mechanism portion 20b includes a drive arm 24, first, second, and third connection arms 25a, 25b, and 25c, a tension spring 26a, and a tension wire 26b, and a push rod 27 and a drive motor 28. It has. The drive arm 24 includes a circular main body 24a and an arm portion 24b extending orthogonally from the outer peripheral edge thereof. The left and right drive arms 24 are connected to each other via a rotating shaft 24c. The rotating shaft 24c is connected to a part of the circular main body 24a of the drive arm 24 that is deviated from the center, and each drive arm 24 stands upright in a state where the arm portion 24b protrudes vertically upward. The lower end edge of the outer periphery is brought into contact with the left and right side edges of the water dish 22. Thereby, the circular main body 24 a of the drive arm 24 functions as a cam that presses the water tray 22.
[0021]
Of the connecting arms 25a, 25b, and 25c, the first connecting arm 25a connects the driving arm 24 and the water tray 22, and the upper end of the first connecting arm 25a is rotatable to the upper end of the arm 24b of the driving arm 24. And it is connected with the side part of the collection water part 22c of the water tray 22 in the lower end part. A long hole 25a1 extending in the longitudinal direction is formed at the lower end portion of the first connecting arm 25a, and a connecting pin 22c1 protruding in front of the side of the water collecting portion 22c is movably inserted into the long hole 25a1. Thus, the first connecting arm 25a and the water tray 22 are connected.
[0022]
The second connecting arm 25b connects the driving arm 24 and the third connecting arm 25c, and is rotatably connected to the circular main body 24a of the driving arm 24 at one end thereof and to the other end. And is connected to one end of a third connecting arm 25c rotatably supported by the frame F1. One end of the second connecting arm 25b is connected to a portion higher than the connecting portion of the rotary shaft 24c in the circular main body 24a of the drive arm 24. In addition, a long hole 25b1 extending in the longitudinal direction is formed in the other end portion of the second connecting arm 25b, and one end portion of the third connecting arm 25c is rotatably connected to the side portion of the collecting water portion 22c. The connecting pin 25c1 is inserted into the elongated hole 25b1 so as to be movable, and the second connecting arm 25b is connected to the drive arm 24 and the third connecting pin 25c.
[0023]
In the movable mechanism portion 20b, the water tray 22 is supported by the drive arm 24, the first, second, and third connection arms 25a, 25b, and 25c, and the water tray 22 is placed below the ice maker 21 in the ice making portion 20a. It is located.
[0024]
The push rod 27 is movably mounted on the left and right upper end portions of the collected water portion 22c of the water tray 22, and the push rod 27 has left and right ends of the collected water portion 22c. A pair of left and right tension springs 26a hooked on the rear end wall portion are hooked. In addition, the other end of the pulling wire 26b having one end hooked to the side of the frame F1 is connected to each end of the push rod 27. The pulling wire 26b is inclined downward from the end portion of the push rod 27 and extends to the front end side through a predetermined amount below the engaging pin 22f projecting from the side of the water collecting portion 22c of the water tray 22. Yes.
[0025]
The ice making machine 20 is controlled by a known control device (not shown) in four steps of ice making operation, water pan lowering, deicing operation, and water pan rising. When the operation is stopped, the ice making unit 20a and The movable mechanism 20b is in the state shown in FIGS. 4 and 5A. In this state, the ice making chamber 21b of the ice making device 21 is closed by the upper plate portion 22a of the water tray 22, and during the ice making operation, the cooling medium is circulated and supplied from the known refrigeration apparatus to the cooling portion 21d, and the ice making chamber 21d. Is cooled. During this time, the water supply pump 23a is driven to supply the ice making water in the ice making water tank 20c to the water supply passage 22b of the water tray 22, and the supplied ice making water is ejected from each ejection hole 22d and supplied to each ice making chamber 21d. The A part of the supplied ice-making water is frozen in the ice-making chamber 21b, and the rest is returned to the ice-making water tank 20c through the collecting water section 22c.
[0026]
When the ice making operation is performed for a predetermined time, the flat ice 11 is formed between the ice making chamber 21b and the upper dish portion 22a, and a thermistor (not shown) provided in the ice making device 21 detects this, and a detection signal indicating completion of ice making is controlled. Output to. As a result, the control device switches the ice making machine 20 from the ice making operation to the deicing operation and drives the movable mechanism portion 20b.
[0027]
In the deicing operation, hot gas is supplied from a known refrigeration apparatus to the cooling unit 21d of the ice making device 21, and the supply of ice-making water from each of the ejection holes 22d is continued. At the same time, the ice-making water is supplied from the water supply pipe 23c to the water dish. Water is supplied onto the upper dish portion 22a of 22. The ice-making water supplied during this time flows back to the ice-making water tank 20c through the collecting water section 22c. Thereby, the upper dish part 22a of the water dish 22 forms a state in which it is easy to peel off from the ice 11 formed in the ice making chamber 21b.
[0028]
The supply of ice-making water from the ice-making water tank 20c and the supply from the water supply pipe 23c are controlled by a timer by the control device and stopped after a predetermined time has elapsed, and then the driving of the movable mechanism portion 20b is started. The driving of the movable mechanism portion 20b is started by driving the drive motor 28. By driving the drive motor 28, the drive arm 24 is rotated clockwise in the figure.
[0029]
By rotating the drive arm 24, the cylindrical main body 24a functions as a pressing cam, and rotates as shown in FIG. 5B to push down the water tray 22 and freeze the water tray 22 to the ice maker 21. The ice 11 is peeled off. During this time, the first connecting arm 25 a and the second connecting arm 25 b try to move downward while rotating as the drive arm 24 rotates, but until the water tray 22 peels off from the ice 11, The movement of the connecting arms 25a and 25b is restricted by the action of the long holes 25a1 and 25b1 provided in the arms 25a and 25b and the connecting pins 22c1 and 25c1.
[0030]
When the water tray 22 is peeled off from the ice 11, the first and second connection arms 25a and 25b move downward while rotating the drive arm 24 to rotate the third connection arm 25c, The water tray 22 is supported by these connecting arms 25a to 25c and gradually descends while maintaining a horizontal state. During this time, the protrusion 24d provided on the rotating shaft 24c of the drive arm 24 contacts the switch sw1, the switch sw1 operates to stop the drive motor 28, and the water tray 22 is moved to the ice making machine as shown in FIG. 21 is supported in a horizontal state below a predetermined amount.
[0031]
In addition, by the operation of the switch sw1, water is supplied from the water supply pipe 23c onto the upper plate portion 22a of the water tray 22 for a predetermined time, and the remaining ice frozen on the upper surface of the upper plate portion 22a is melted to dissolve the upper plate portion 22a. Clean the top surface. The water supplied from the water supply pipe 23 for a predetermined time flows out to the ice making water tank 20c through the collecting water section 22c. The ice 11 frozen in the ice making chamber 21b of the ice making machine 21 is separated from the ice making chamber 21b by the melting action of the hot gas supplied to the cooling unit 21d and the melting action of each supply water. It slowly falls on the upper surface of the upper plate 22a.
[0032]
The drop of the ice 11 to the upper surface of the upper dish portion 22a is detected by a thermistor (not shown) provided in the ice maker 21, the supply of hot gas to the cooling portion 21d is stopped, the deicing operation is completed, and the ice making machine 20 Switches to a state where ice making operation can be started.
[0033]
Further, the drive of the drive motor 28 is resumed, and the drive arm 24 further rotates clockwise in the figure. For this reason, the first and second connection arms 25a and 25b further move while rotating further, and the first connection arm 25a pushes the front end side of the water dish 22 downward to rotate the water dish 22. Then, as shown in FIG. 5 (d), an inclined state in which the vehicle is inclined downward is formed.
[0034]
When the water pan 22 is rotated forward, the pulling wire 26b is engaged with the engaging pin 22f provided on the water pan 22, and the pulling wire 26b is pulled downward by the engaging pin 22f. As a result, the push rod 27 connected to both the pull wires 26b is pulled forward against the tension spring 26a, and the push rod 27 pulls the ice 11 from the back as shown in FIG. 5 (d). Moves a predetermined amount forward while pushing. As a result, the ice 11 slides on the upper surface of the upper plate portion 22a of the water tray 22 and rides on the ribs 22e on the front edge, forming a gap between the ice 11 and the upper surface of the upper plate portion 22a. Then, it moves forward smoothly as a non-contact state, and is transported to the bagging device 30 disposed forward.
[0035]
At this time, the protrusion 24d of the drive arm 24 comes into contact with the switch sw2, operates the switch sw2, temporarily stops the drive motor 28, and then reversely drives the drive motor 28 to move the drive arm 24 counterclockwise in the figure. Turn to. When the drive arm 24 rotates counterclockwise in the drawing and the protrusion 24d contacts the switch sw3, the switch sw3 operates to stop the drive motor 28 and stop the drive arm 24 from rotating. Thereafter, the water supply pump 23a is driven to supply ice making water to the ice making chamber 21b of the ice making device 21 and the ice making operation is resumed.
[0036]
While the drive arm 24 returns, the connecting arms 25a, 25b, 25c rotate in the direction opposite to that when the water tray 22 is lowered and move upward as the drive arm 24 rotates. The tray 22 is returned to the ice-making operation ready state shown in FIG. 5A through the downward inclined state shown in FIG. 5D through the horizontal state shown in FIGS.
[0037]
The above operation in the ice making machine 20 is controlled by a control device (not shown). FIG. 6 shows a time chart from the ice making operation to the end of the deicing operation.
[0038]
The ice 11 transported to the bagging device 30 side is pushed by the pushing mechanism 30a and inserted between the both resin films 12a and 12b, and both the resin films 12a and 12b are sealed by the sealing mechanism 30b. At the same time, the back of the rear seal portion of the bag 12 is cut by the cutting mechanism 30c and conveyed to a frozen stoker (not shown).
[0039]
Thus, according to the deicing operation method of the ice making machine 20, both the water supplied onto the water tray 22 at the start of the deicing operation and the water for ice making continuously supplied to the ice making device 21, The melting of the ice formed between each ice making chamber 21b of the ice making device 21 and the upper plate portion 22a of the water tray 22 is promoted, and the freezing state between the ice and the water tray 22 is relieved at an early stage. Peeling from 21 becomes easy. For this reason, it is possible to reduce the load on the movable mechanism portion 20b and the water tray 22 during the deicing operation, and the occurrence of damage to the movable mechanism portion 20b and the water tray 22 due to an excessive load is prevented. The reduction of the load on the movable mechanism portion 20b enables the movable mechanism portion 20b to be downsized, and the cost of the ice making machine 20 can be reduced.
[0040]
Further, according to the deicing operation of the ice making machine 20, the water supplied to the water tray 22 and the ice making device 21 is cooled by ice and returned to the ice making water tank 20c, and this is followed by ice making water during the ice making operation. Therefore, the ice making capacity of the ice making machine 20 can be increased.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a state in which ice produced by applying a deicing operation according to the present invention is packed in a bag.
FIG. 2 is a longitudinal sectional view of the ice packed in the bag.
FIG. 3 is a schematic configuration diagram of an ice manufacturing apparatus including an ice making machine to which the deicing operation is applied as a constituent unit.
FIG. 4 is a schematic side view of the ice making machine.
FIG. 5 is a side view (a) to (d) showing an operation during the deicing operation of the ice making machine.
FIG. 6 is a time chart showing an operation state from the start of the ice making operation to the end of the deicing operation in the ice making machine.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 ... Ice, 11a ... Connection part, 11b ... Slit, 11c ... Square ice part, 12 ... Bag, 12a, 12b ... Resin film, 20 ... Ice making machine, 20a ... Ice making part, 20b ... Movable mechanism part, 20c ... Ice making water Tank, 21 ... Ice maker, 21a ... Frame part, 21b ... Ice making chamber, 21c ... Partition wall, 21d ... Cooling part, 22 ... Water dish, 22a ... Upper dish part, 22b ... Water supply passage, 22c ... Collection water part, 22c1 ... connecting pin, 22d ... ejection hole, 22e ... rib, 22f ... engaging pin, 23a ... feed pump, 23b ... connecting hose, 23c ... feed pipe, 24 ... drive arm, 24a ... circular body, 24b ... arm part 24c ... Rotating shaft 24d ... Protrusion 25a ... First connecting arm 25a1 ... Elongated hole 25b ... Second connecting arm 25b1 ... Elongated hole 25c ... Third connecting arm 25c1 ... Connecting pin 26a ... Tension spring 26b ... tension wire, 27 ... push rod, 28 ... drive motor, F1 ... frame, sw1, sw2, sw3 ... switch.

Claims (2)

下方に開口する複数の製氷室を有する製氷器と、前記各製氷室に製氷用水を供給する複数の噴出孔を有し前記製氷器の下方にて上下動可能に配置されて前記各製氷室の下端開口部を閉塞する水皿と、前記水皿を下動して前記各製氷室を開放する駆動手段を備え、前記製氷器の各製氷室を前記水皿にて閉塞した状態で、前記製氷器に冷却媒体を供給しつつ、かつ、前記水皿の各噴出孔から前記各製氷室に製氷用水を供給しつつ製氷運転を行う製氷機における製氷運転終了後に行う除氷運転方法であって、製氷運転終了後に、前記製氷器にホットガスを供給して前記各製氷室と前記水皿間に形成される氷を融解しつつ前記水皿を前記駆動手段の作動により下動させて前記製氷器から引剥がし、前記製氷器から融解して離脱する氷を引剥がされた前記水皿上に受承する除氷運転方法であり、前記製氷器にホットガスを供給して前記各製氷室と前記水皿間に形成される氷の融解を開始すると同時に前記水皿上へ給水するとともに、前記製氷器への製氷用水の供給を継続して、前記水皿を前記駆動手段の作動により下動させて前記製氷器から引剥がすことを特徴とする製氷機における除氷運転方法。An ice making machine having a plurality of ice making chambers opening downward, and a plurality of jet holes for supplying ice making water to each ice making room, and is arranged to be vertically movable below the ice making machine. and water pan for closing the lower end opening, moves downward the water tray provided with a driving means for opening the respective ice making chamber, each ice making chamber of the ice maker in a condition of closing in the water tray, the ice making A deicing operation method that is performed after the ice making operation is completed in an ice making machine that performs ice making operation while supplying ice making water to each ice making chamber from each ejection hole of the water dish while supplying a cooling medium to the container , After completion of the ice making operation , hot ice is supplied to the ice making device to melt the ice formed between the ice making chambers and the water tray, and the water tray is moved down by the operation of the driving means to move the ice making device. Before the ice that has been peeled off and melted away from the ice maker A deicing operation method for nest on water pan, the water supply to the ice maker in the supplying hot gas to initiate melting of the ice formed between the water tray and the respective ice making chamber simultaneously on the water tray In addition, a deicing operation method in the ice making machine, wherein the ice making water is continuously supplied to the ice making device, and the water tray is moved down by the operation of the driving means to be peeled off from the ice making device . 請求項1に記載の製氷機における除氷運転方法において、前記製氷機は前記水皿から流出する水を収容する製氷用水タンクを備え、同製氷用水タンクから前記製氷器に製氷用水供給するようになっていることを特徴とする製氷機における除氷運転方法。2. The deicing operation method for an ice making machine according to claim 1, wherein the ice making machine includes an ice making water tank for storing water flowing out of the water tray, and supplies ice making water from the ice making water tank to the ice making device. A deicing operation method in an ice making machine, characterized in that
JP27368698A 1998-09-28 1998-09-28 Deicing operation method in ice making machine Expired - Fee Related JP4285809B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27368698A JP4285809B2 (en) 1998-09-28 1998-09-28 Deicing operation method in ice making machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27368698A JP4285809B2 (en) 1998-09-28 1998-09-28 Deicing operation method in ice making machine

Publications (2)

Publication Number Publication Date
JP2000105037A JP2000105037A (en) 2000-04-11
JP4285809B2 true JP4285809B2 (en) 2009-06-24

Family

ID=17531145

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27368698A Expired - Fee Related JP4285809B2 (en) 1998-09-28 1998-09-28 Deicing operation method in ice making machine

Country Status (1)

Country Link
JP (1) JP4285809B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5138941B2 (en) * 2007-01-17 2013-02-06 ホシザキ電機株式会社 How to operate a jet ice maker

Also Published As

Publication number Publication date
JP2000105037A (en) 2000-04-11

Similar Documents

Publication Publication Date Title
KR101890939B1 (en) Ice maker
US4614088A (en) Ice piece ejection mechanism for icemaker
US5425248A (en) Ice maker subassembly for a refrigerator freezer
EP1798500B1 (en) Icemaker and method for controlling the same
JPH0611219A (en) Automatic ice maker
JP4285809B2 (en) Deicing operation method in ice making machine
JP4176883B2 (en) Ice machine
CN100356122C (en) Method of controlling a refrigerator
JP4278206B2 (en) Ice bagging machine
JPH0949672A (en) Ice making equipment
KR102799067B1 (en) Refrigerator and method for controlling the same
JP3781470B2 (en) Automatic ice making equipment
KR20050110213A (en) Ice maker
JP4285810B2 (en) Sealing method and sealing mechanism for resin bag containing flat ice
JP2000105039A (en) Cutting mechanism of resin film in ice bagging machine
JPH0537175Y2 (en)
KR100688163B1 (en) Ice detection device
JPH0551832B2 (en)
KR102894895B1 (en) Ice maker and Refrigerator having the same
KR102850862B1 (en) Ice maker and Refrigerator having the same
JP2005114198A (en) Ice tray and refrigerator with automatic ice making machine
CN100417882C (en) refrigerator ice machine
KR102779593B1 (en) Refrigerator and method for controlling the same
JP2002174475A (en) Automatic refrigerator for ice making
KR102783400B1 (en) Refrigerator

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20050901

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20080716

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20080729

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20080926

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20090310

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20090324

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120403

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130403

Year of fee payment: 4

LAPS Cancellation because of no payment of annual fees