JP2658225B2 - Water heater - Google Patents
Water heaterInfo
- Publication number
- JP2658225B2 JP2658225B2 JP63189006A JP18900688A JP2658225B2 JP 2658225 B2 JP2658225 B2 JP 2658225B2 JP 63189006 A JP63189006 A JP 63189006A JP 18900688 A JP18900688 A JP 18900688A JP 2658225 B2 JP2658225 B2 JP 2658225B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- storage tank
- activated carbon
- water storage
- hot water
- 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 - Lifetime
Links
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、水道水等に含まれる残留塩素や有機物質等
の除去機能を備えた電気湯沸し器およびコーヒー湯沸し
器等の湯沸かし装置に関するものである。Description: TECHNICAL FIELD The present invention relates to a water heater such as an electric water heater and a coffee water heater having a function of removing residual chlorine and organic substances contained in tap water and the like.
従来の技術 従来の浄水装置としては、水道水に含まれる残留塩素
や有機物質等を除去するために、第８図に示すような水
道蛇口に取り付ける構造の浄水器が知られている。この
浄水器は浄水装置体１内に水道水が流れる流路２を設け
るとともに、この流路２の途中に活性炭３を装備し、こ
の活性炭３の物理吸着により水道水に含まれる残留塩素
や有機物質等を除去するようにしていた。2. Description of the Related Art As a conventional water purifier, there is known a water purifier having a structure attached to a water tap as shown in FIG. 8 in order to remove residual chlorine and organic substances contained in tap water. This water purifier is provided with a flow path 2 through which tap water flows in a water purification device body 1 and is equipped with activated carbon 3 in the middle of the flow path 2. The substance was removed.
発明が解決しようとする課題 上記従来の浄水器では、活性炭３の物理吸着を利用し
ているもので、この活性炭３の物理吸着量は流速と活性
炭３の量に比例するため、十分な浄水を、また寿命を期
待するためには、多量の活性炭３が必要となり、コスト
高になるという問題点を有していた。Problems to be Solved by the Invention In the above-mentioned conventional water purifier, the physical adsorption of activated carbon 3 is used. Since the amount of physical adsorption of activated carbon 3 is proportional to the flow rate and the amount of activated carbon 3, sufficient water purification is performed. In addition, in order to expect a long service life, a large amount of activated carbon 3 is required, resulting in an increase in cost.
本発明はこのような問題点に鑑み、少量の活性炭で水
道水等に含まれる残留塩素や有機物質等の除去効果を上
げることができる電気湯沸し器およびコーヒー沸し器等
の湯沸かし装置を提供することを目的とするものであ
る。The present invention has been made in view of the above problems, and provides a water heater such as an electric water heater and a coffee water heater capable of improving the effect of removing residual chlorine and organic substances contained in tap water or the like with a small amount of activated carbon. The purpose is to do so.
課題を解決するための手段 上記課題を解決するために本発明の湯沸かし装置は、
貯水槽内の液体が一定方向に循環可能な循環路を設け、
この循環路には前記貯水槽内の液体を加熱する加熱装置
を備えるとともに、循環経路内に活性炭を設けた湯沸か
し装置とする。Means for Solving the Problems In order to solve the above problems, the water heater of the present invention,
Provide a circulation path through which the liquid in the water tank can circulate in a certain direction,
This circulation path is provided with a heating device for heating the liquid in the water storage tank, and a water heater provided with activated carbon in the circulation path.
また、温度検知装置を備えた貯水槽と、この貯水槽の
液体を導入して加熱する加熱装置と、この加熱装置によ
り加熱された液体を前記貯水槽へ戻す循環流路とを有
し、前記循環流路中に活性炭を設けた湯沸かし装置とす
る。Further, a water storage tank equipped with a temperature detection device, a heating device for introducing and heating the liquid in the water storage tank, and a circulation flow path for returning the liquid heated by the heating device to the water storage tank, A water heater provided with activated carbon in the circulation channel.
作用 上記構成によれば、貯水槽内の水が加熱装置により加
熱されて湯となり、この湯が貯水槽の出口水路内に装備
した活性炭に接触するものであるため、この湯が活性炭
を通過する際には、活性炭の物理吸着の他に、触媒反
応、すなわち2Cl2＋2H2O→4HCl＋O2が生じることにな
り、その結果、少量の活性炭で浄水効果を高めることが
できるとともに、触媒反応は吸着ではないため、活性炭
の寿命も増加させることができるものである。Operation According to the above configuration, the water in the water storage tank is heated by the heating device to become hot water, and the hot water comes into contact with the activated carbon provided in the outlet channel of the water storage tank, so that the hot water passes through the activated carbon. In this case, in addition to the physical adsorption of activated carbon, a catalytic reaction, that is, 2Cl 2 + 2H 2 O → 4HCl + O 2 , occurs. As a result, a small amount of activated carbon can enhance the water purification effect, and the catalytic reaction is not absorbed However, the life of the activated carbon can be increased.
実 施 例 以下、本発明の実施例を添付図面に基づいて説明す
る。Embodiments Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
第１図は本発明の一実施例を示す電気湯沸し器の断面
図を示したもので、この第１図において、11は水を収容
する貯水槽で、この貯水槽11は密閉され、かつ下部の外
周面には帯状ヒータよりなる加熱装置12を装備してい
る。13はベローズで、このベローズ13は圧縮空気を前記
貯水槽11内に送り込み、そして貯水槽11内の液面に圧力
をかけることにより、貯水槽11内の湯を昇水パイプ14を
介して出口流路15に導き、その吐出口17より外部に吐出
させるものである。16は前記出口流路15内に装備された
活性炭である。FIG. 1 is a cross-sectional view of an electric water heater showing one embodiment of the present invention. In FIG. 1, reference numeral 11 denotes a water storage tank for storing water. A heating device 12 composed of a belt-shaped heater is provided on the outer peripheral surface of the device. Reference numeral 13 denotes a bellows. The bellows 13 sends compressed air into the water storage tank 11 and applies pressure to the liquid level in the water storage tank 11 so that hot water in the water storage tank 11 is discharged through a rising pipe 14. It is guided to the flow path 15 and discharged from the discharge port 17 to the outside. Reference numeral 16 denotes activated carbon provided in the outlet channel 15.
上記構成において、次にその作用を説明する。まず、
貯水槽11に水を入れ、帯状ヒータよりなる加熱装置12に
通電すると、加熱装置12は発熱し、貯水槽11内の水を加
熱して湯沸しを行なう。そしてこの貯水槽11内の湯を取
り出すために、ベローズ13を押し込んで圧縮させると、
この圧縮空気が前記貯水槽11内に送り込まれて、貯水槽
11内の液面に圧力をかける。これにより、貯水槽11内の
湯は昇水パイプ14を経て出口流路15に導かれ、そしてこ
の出口流路15内に装備した活性炭16を通過して外部に吐
出される。Next, the operation of the above configuration will be described. First,
When water is poured into the water storage tank 11 and a heating device 12 composed of a belt-shaped heater is energized, the heating device 12 generates heat and heats the water in the water storage tank 11 to perform boiling water. And, in order to take out the hot water in this water storage tank 11, when the bellows 13 is pushed in and compressed,
This compressed air is sent into the water storage tank 11 and
Apply pressure to the liquid level in 11. As a result, the hot water in the water storage tank 11 is guided to the outlet channel 15 via the water rising pipe 14, and is discharged outside through the activated carbon 16 provided in the outlet channel 15.
この活性炭16中を水が通過する時に浄水効果が得られ
るが、第２図に示す実験データによると、活性炭16を通
過する湯の温度は高い程、水道水等に含まれる残留塩素
や有機物質等の除去効率は向上するため、より高い浄水
効果が得られるものである。Although a water purification effect is obtained when water passes through the activated carbon 16, according to the experimental data shown in FIG. 2, the higher the temperature of hot water passing through the activated carbon 16, the higher the residual chlorine and organic substances contained in tap water and the like. Since the efficiency of removing water and the like is improved, a higher water purification effect can be obtained.
第３図は本発明の他の実施例を示す循環式の電気湯沸
し器の概略図を示したものである。17は水を収容する貯
水槽で、この貯水槽17の底部には流出方向のみに開口す
る逆止弁18を備えている。19は前記貯水槽17内の水が一
定方向に循環可能となるように設けた循環路で、この循
環路19の下部には加熱装置20を備えており、この加熱装
置20は前記貯水槽17から逆止弁18を介して導入される水
を加熱するものである。21は前記循環路19内に装備した
活性炭で、この活性炭21は加熱装置20の上流側に位置し
ている。22は貯水槽17の下部側壁に設けた湯の取出し口
で、この取出し口22には開閉弁23を設けており、この開
閉弁23を開くことにより、貯水槽17内の湯を外へ出すこ
とができる。FIG. 3 is a schematic view of a circulation type electric water heater showing another embodiment of the present invention. Reference numeral 17 denotes a water storage tank for storing water. The water storage tank 17 has a check valve 18 at the bottom thereof which opens only in the outflow direction. Reference numeral 19 denotes a circulation path provided so that water in the water storage tank 17 can be circulated in a certain direction.A heating device 20 is provided at a lower portion of the circulation path 19, and the heating device 20 To heat the water introduced through the check valve 18. Reference numeral 21 denotes activated carbon provided in the circulation path 19, and the activated carbon 21 is located on the upstream side of the heating device 20. Reference numeral 22 denotes an outlet for hot water provided on a lower side wall of the water storage tank 17, and an opening / closing valve 23 is provided at the outlet 22. By opening the opening / closing valve 23, the hot water in the water storage tank 17 is taken out. be able to.
上記構成において、次にその作用を説明する。まず、
貯水槽17に水を入れ、加熱装置20に通電すると、発熱を
開始し、循環路19内の加熱装置20に接している部分の水
は局部的に沸騰して蒸気を発生する。そしてこの発生し
た蒸気の圧力により循環路19内の湯を循環路19の上端開
口より再び貯水槽17へ押し出す。そして前記蒸気が外部
へ放出された後は循環路19内の圧力が低下し、新たに貯
水槽17より水が循環路19内に流入し、加熱装置20により
加熱されて沸騰するもので、このような作用を繰り返す
ことにより、貯水槽17内の水は循環路19を介して一定方
向に循環するもので、この循環において、加熱装置20に
より加熱された湯は、循環路19内に装備した活性炭21を
通過するため、浄水作用が生じる。この作用は、任意に
加熱装置20への通電を停止するまで湯の循環が繰り返さ
れるため、この湯は複数回活性炭21を通過することにな
り、その結果、活性炭21との接触時間が増えるため、浄
水効果も向上するものである。また水中の残留塩素の濃
度が薄い程浄水効果がよくなることが第４図の実験デー
タより確認されており、したがって複数回活性炭21を通
過させるごとに残留塩素の濃度は通過するごとに小さく
なると考えられ、複数回活性炭21を通過させることは非
常に有効となるものである。Next, the operation of the above configuration will be described. First,
When water is poured into the water storage tank 17 and the heating device 20 is energized, heat is generated, and the water in the portion of the circulation path 19 that is in contact with the heating device 20 is locally boiled to generate steam. Then, the hot water in the circulation path 19 is pushed out again from the upper end opening of the circulation path 19 to the water storage tank 17 by the pressure of the generated steam. Then, after the steam is released to the outside, the pressure in the circulation path 19 decreases, and water newly flows into the circulation path 19 from the water storage tank 17 and is heated by the heating device 20 and boils. By repeating such an operation, the water in the water storage tank 17 is circulated in a certain direction through the circulation path 19, and in this circulation, the hot water heated by the heating device 20 is provided in the circulation path 19 Since the water passes through the activated carbon 21, a water purification action occurs. This effect is that the circulation of the hot water is repeated until the power supply to the heating device 20 is arbitrarily stopped, so that the hot water passes through the activated carbon 21 a plurality of times. As a result, the contact time with the activated carbon 21 increases. The water purification effect is also improved. It has been confirmed from the experimental data in FIG. 4 that the purifying effect becomes better as the concentration of residual chlorine in the water is lower. Therefore, it is considered that the residual chlorine concentration decreases with each passage through the activated carbon 21 a plurality of times. Therefore, passing through the activated carbon 21 a plurality of times is very effective.
第５図〜第７図は本発明のさらに他の実施例を示すコ
ーヒー沸し器を示したもので、図において、24は水を収
容する貯水槽25から逆止弁26を介して水管27に導かれ、
かつヒータよりなる加熱装置28により加熱されて噴出す
る湯および蒸気の圧力を減圧する給湯切換装置で、その
底面には、一端を上面に向かって開口し、かつ他端を水
管27に接続した吐出口29と略筒状の排湯口30を設けてい
る。また排湯口30には湯ガイド31を回動自在に軸支して
おり、この湯ガイド31はばね32により常時濾過室33の方
向、すなわち矢印Ａ方向へ付勢されており、排湯口30か
ら流出する湯を開口部34を介して貯水槽25あるいは濾過
室33のいずれかへ選択的に導くことができる。35は貯水
槽25の底部近傍に配設した熱応動部材で、この熱応動部
材35は形状記憶合金からなり、前記貯水槽25内の水温が
低いときは、バイアスばね36の伸張圧に抗して圧縮状態
となっているが、水温が熱応動温度になると、熱応動部
材35は伸張し、ロッド37を矢印Ｂ方向へ押し上げるもの
である。38は前記貯水槽25の下方に位置する水管27内に
装備された活性炭である。FIGS. 5 to 7 show a coffee kettle according to a further embodiment of the present invention. In the figures, reference numeral 24 denotes a water pipe 27 from a water storage tank 25 containing water via a check valve 26. Led to
A hot water supply switching device that reduces the pressure of hot water and steam that is ejected by being heated by a heating device 28 that is a heater, and has a bottom surface having one end opened toward the upper surface and the other end connected to a water pipe 27. An outlet 29 and a substantially cylindrical drain 30 are provided. A hot water guide 31 is rotatably supported by the hot water outlet 30. The hot water guide 31 is constantly urged by a spring 32 in the direction of the filtration chamber 33, that is, in the direction of arrow A. The flowing hot water can be selectively guided to either the water storage tank 25 or the filtration chamber 33 through the opening 34. Numeral 35 denotes a heat responsive member disposed near the bottom of the water storage tank 25.The heat responsive member 35 is made of a shape memory alloy, and when the water temperature in the water storage tank 25 is low, it resists the extension pressure of the bias spring 36. When the water temperature reaches the heat responsive temperature, the heat responsive member 35 expands and pushes up the rod 37 in the direction of arrow B. Reference numeral 38 denotes activated carbon provided in the water pipe 27 located below the water storage tank 25.
上記構成において、次にその作用を説明する。 Next, the operation of the above configuration will be described.
まず、所要量の粉砕されたコーヒ豆を濾過室33に入
れ、貯水槽25に所定量の水を供給する。加熱装置28に通
電すると、水管27に入り込んだ水は加熱されて、やがて
局部的に沸騰を始めて蒸気を発生する。このとき、水管
27に入り込んでいる水は、発生した蒸気の圧力により、
貯水槽25側には逆止弁26の存在により逆流することな
く、水管27内の活性炭38を通過し、そして吐出口29を通
じて給湯切換装置24内に噴出する。ここで蒸気と湯とに
分離され、湯は排湯口30を通じて湯ガイド31に滴下し、
その開口部34より再び貯水槽25へ還流される。この動作
が連続的に繰り返されると、貯水槽25内の水温は次第に
上昇するとともに、活性炭38の効果により浄化され、か
つ雑菌の除去もなされる。First, a required amount of ground coffee is put into the filtration chamber 33, and a predetermined amount of water is supplied to the water storage tank 25. When power is supplied to the heating device 28, the water that has entered the water pipe 27 is heated, and eventually begins to boil locally to generate steam. At this time, water pipe
The water entering 27 is subject to the pressure of the generated steam,
The water flows into the hot water supply switching device 24 through the discharge port 29 without flowing back to the water storage tank 25 due to the presence of the check valve 26 without flowing back. Here, it is separated into steam and hot water, and the hot water drops on the hot water guide 31 through the hot water outlet 30,
The water is returned to the water storage tank 25 from the opening 34 again. When this operation is continuously repeated, the water temperature in the water storage tank 25 gradually increases, the water is purified by the effect of the activated carbon 38, and various bacteria are removed.
ここで貯水槽25内の湯温が100℃近く沸騰状態になっ
た時の温度を熱応動部材35の動作温度としておけば、沸
騰状態になると、その温度を熱応動部材35が検知し、そ
してこの熱応動部材35はバイアスばね36の力に抵抗して
伸張し、ロッド37を上方に動かす。これにより、湯ガイ
ド31は回動し、その開口部34は濾過室33側へ移動する。
これにより、排湯口30を介して湯ガイド31に流れ込んだ
湯は濾過室33でコーヒーを抽出し、そのコーヒー液は受
け容器39に溜る。このコーヒーは、活性炭38の働きによ
り、トリハロ等の不良成分が除去され、また水中の残留
塩素は、前述したように湯の温度が高い程、浄水効果が
すぐれているため、確実に除去することができ、また前
記湯は循環を繰り返すことによりさらに浄水効果が向上
するもので、コーヒー液抽出時の湯の温度は100℃に近
いため、一般の雑菌も死滅された状態となり、このよう
な湯をコーヒー液の抽出に用いるため、コーヒーの味は
向上するものである。Here, if the temperature of the hot water in the water storage tank 25 becomes a boiling state near 100 ° C. as the operating temperature of the thermoresponsive member 35, when the boiling state occurs, the thermoresponsive member 35 detects the temperature, and The heat responsive member 35 expands against the force of the bias spring 36, and moves the rod 37 upward. Thereby, the hot water guide 31 rotates, and the opening 34 moves to the filtration chamber 33 side.
As a result, the hot water that has flowed into the hot water guide 31 through the hot water outlet 30 extracts coffee in the filtration chamber 33, and the coffee liquid accumulates in the receiving container 39. Defective components such as trihalo are removed from the coffee by the activated carbon 38. Residual chlorine in water must be reliably removed because the higher the temperature of hot water, the better the water purification effect, as described above. In addition, the hot water further improves the water purification effect by repeating the circulation, and since the temperature of the hot water at the time of extracting the coffee liquid is close to 100 ° C., general germs are also killed. Is used for extracting coffee liquor, so that the taste of coffee is improved.
なお、上記各実施例で示した活性炭16,21,38は物理吸
着をなすとともに、触媒反応、すなわち2Cl2＋2H2O→4H
Cl＋O2を起こすため、少量の活性炭で浄水効果を高める
ことができるものである。The activated carbons 16, 21, and 38 shown in each of the above examples perform physical adsorption and catalytic reaction, that is, 2Cl 2 + 2H 2 O → 4H
To cause Cl + O 2, in which it is possible to enhance the water purification effect with a small amount of activated carbon.
発明の効果 上記実施例の説明から明らかなように本発明の湯沸か
し装置は、循環経路内に活性炭を設けているので、加熱
装置により貯水槽内の水は加熱されて湯となり、そして
この湯が貯水槽の出口水路内に装備した活性炭に接触す
るため、湯は活性炭を通過する際に、活性炭の物理吸着
の他に、触媒反応により湯中の遊離塩素を除去するもの
である。このため、活性炭の寿命は長くなる。Effect of the Invention As is clear from the description of the above embodiment, the water heater of the present invention is provided with activated carbon in the circulation path, so that the water in the water storage tank is heated by the heating device to become hot water, and this hot water is heated. The hot water removes free chlorine in the hot water by a catalytic reaction when passing through the activated carbon, in addition to the physical adsorption of the activated carbon, because the hot water comes into contact with the activated carbon provided in the outlet channel of the water storage tank. For this reason, the life of activated carbon is prolonged.
また、温度検知装置を備えた貯水槽と、この貯水槽の
液体を導入して加熱する加熱装置と、この加熱装置によ
り加熱された液体を前記貯水槽へ戻す循環流路とを有
し、前記循環流路中に活性炭を設けた湯沸かし装置とし
ているので、沸騰温度を検知した後に、遊離塩素を除去
された湯を抽出することができる。Further, a water storage tank equipped with a temperature detection device, a heating device for introducing and heating the liquid in the water storage tank, and a circulation flow path for returning the liquid heated by the heating device to the water storage tank, Since the water heater is provided with activated carbon in the circulation channel, it is possible to extract hot water from which free chlorine has been removed after detecting the boiling temperature.
第１図は本発明の湯沸かし装置の一実施例を示す縦断面
図、第２図は同湯沸かし装置に採用した活性炭の温度と
除去率の関係を示すグラフ、第３図は本発明の湯沸かし
装置の他の実施例を示す概略図、第４図は同湯沸かし装
置に採用した活性炭の原水濃度と除去率の関係を示すグ
ラフ、第５図はさらに他の実施例を示す湯沸かし装置の
全体構成断面図、第６図および第７図は第５図における
実施例を示す湯沸かし装置の要部断面図、図８は従来の
浄水器を示す概略図である。 11,17,25……貯水槽、12,20,28……加熱装置、15……出
口流路、19……循環路、16,21,38……活性炭、35……熱
応動部材（温度検知装置）。FIG. 1 is a longitudinal sectional view showing an embodiment of the water heater of the present invention, FIG. 2 is a graph showing the relationship between the temperature and the removal rate of activated carbon employed in the water heater, and FIG. 3 is the water heater of the present invention. FIG. 4 is a schematic diagram showing another embodiment, FIG. 4 is a graph showing the relationship between the raw water concentration and the removal rate of activated carbon employed in the water heater, and FIG. 5 is a cross-sectional view of the entire structure of a water heater showing still another embodiment. FIGS. 6, 6 and 7 are cross-sectional views of a main part of a water heater showing an embodiment in FIG. 5, and FIG. 8 is a schematic view showing a conventional water purifier. 11,17,25… water tank, 12, 20, 28… heating device, 15… outlet channel, 19… circulation circuit, 16, 21, 38… activated carbon, 35… heat-responsive member (temperature Detection device).
Claims (2)
環路を設け、この循環路には前記貯水槽内の液体を加熱
する加熱装置を備えるとともに、循環経路内に活性炭を
設けた湯沸かし装置。1. A circulation path through which liquid in a water storage tank can circulate in a certain direction is provided. The circulation path is provided with a heating device for heating the liquid in the water storage tank, and activated carbon is provided in the circulation path. Water heater.
槽の液体を導入して加熱する加熱装置と、この加熱装置
により加熱された液体を前記貯水槽へ戻す循環流路とを
有し、前記循環流路中に活性炭を設けた湯沸かし装置。2. A water storage tank having a temperature detecting device, a heating device for introducing and heating the liquid in the water storage tank, and a circulation flow path for returning the liquid heated by the heating device to the water storage tank. And a water heater in which activated carbon is provided in the circulation channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63189006A JP2658225B2 (en) | 1988-07-28 | 1988-07-28 | Water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63189006A JP2658225B2 (en) | 1988-07-28 | 1988-07-28 | Water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0236820A JPH0236820A (en) | 1990-02-06 |
| JP2658225B2 true JP2658225B2 (en) | 1997-09-30 |
Family
ID=16233723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63189006A Expired - Lifetime JP2658225B2 (en) | 1988-07-28 | 1988-07-28 | Water heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2658225B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2857241B2 (en) * | 1990-09-14 | 1999-02-17 | 松下電器産業株式会社 | Water heater |
| JP2597249B2 (en) * | 1991-06-10 | 1997-04-02 | タイガー魔法瓶株式会社 | Circulating water type electric hot water storage container |
| JPH0793907B2 (en) * | 1991-07-08 | 1995-10-11 | タイガー魔法瓶株式会社 | Circulation purification type electric hot water storage container |
| JP2669197B2 (en) * | 1991-07-09 | 1997-10-27 | 松下電器産業株式会社 | Water heater |
| JP2638524B2 (en) * | 1994-11-28 | 1997-08-06 | タイガー魔法瓶株式会社 | Circulating water type electric hot water storage container |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5544575Y2 (en) * | 1977-09-06 | 1980-10-20 | ||
| JPS60109538U (en) * | 1983-12-28 | 1985-07-25 | 協永産業株式会社 | Thermos flask with water purification function |
| JPS6342886Y2 (en) * | 1984-10-23 | 1988-11-09 |
-
1988
- 1988-07-28 JP JP63189006A patent/JP2658225B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0236820A (en) | 1990-02-06 |
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