JP3058415B1 - Washing machine for dishes etc. equipped with a regenerative hot water generator - Google Patents
Washing machine for dishes etc. equipped with a regenerative hot water generatorInfo
- Publication number
- JP3058415B1 JP3058415B1 JP11167496A JP16749699A JP3058415B1 JP 3058415 B1 JP3058415 B1 JP 3058415B1 JP 11167496 A JP11167496 A JP 11167496A JP 16749699 A JP16749699 A JP 16749699A JP 3058415 B1 JP3058415 B1 JP 3058415B1
- Authority
- JP
- Japan
- Prior art keywords
- heat
- hot water
- heat exchange
- storage tank
- 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 - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Landscapes
- Washing And Drying Of Tableware (AREA)
Abstract
【要約】
【課題】従来、食器類等洗浄機等の温水生成装置は、電
機設備等の設計変更の負担が大きく、設置も容易でなか
った。またエネルギーを有効に利用していなかった。
【解決手段】加熱ヒータ(20b)からの蓄熱材(20
a)の充填域内に、熱媒体(M)を流通させた熱交換回
路(20c)を配置した蓄熱槽(20)と、該蓄熱槽
(20)の熱交換回路と連通した熱交換回路(21a)
を備え、該熱交換により温水を生成すると共に、洗浄機
構(3)内の噴射ノズル(32)へ給水する温水タンク
(21)と、該温水タンク(21)内で熱交換された熱
媒体(M)を貯留する貯留タンク(23)と、該貯留タ
ンク(23)内の熱媒体(M)を再び蓄熱槽(20)の
熱交換回路(20c)へ送る循環ポンプ(24)とす
る。また熱媒体(M)が水であることが好ましい。Conventionally, a hot water generating apparatus such as a dishwasher or the like has a heavy burden of design change of electric equipment and the like, and has not been easily installed. In addition, energy was not used effectively. A heat storage material (20) from a heater (20b) is provided.
a) a heat storage tank (20) in which a heat exchange circuit (20c) in which a heat medium (M) is circulated is disposed in a filling area of (a); and a heat exchange circuit (21a) communicating with the heat exchange circuit of the heat storage tank (20). )
A hot water tank (21) for generating hot water by the heat exchange and supplying water to an injection nozzle (32) in the washing mechanism (3); and a heat medium (heat exchanged in the hot water tank (21)). M) and a circulation pump (24) for sending the heat medium (M) in the storage tank (23) to the heat exchange circuit (20c) of the heat storage tank (20) again. Preferably, the heat medium (M) is water.
Description
【0001】[0001]
【発明の属する技術分野】本願発明は、食器類等の洗浄
機の技術分野に属し、特に、食器類の濯ぎに用いる温水
を蓄熱式温水生成装置により供給する蓄熱式温水生成装
置を備えた食器類等洗浄機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of washing machines for tableware and the like, and in particular, a tableware provided with a regenerative hot water generator for supplying hot water used for rinsing tableware by a regenerative hot water generator. Related to washing machines.
【0002】[0002]
【従来の技術】食器等の洗浄機で用いる濯ぎ水には、通
常約80度の温水が使用される。従来、この温水生成装
置は洗浄機に組込まれており、いわゆる裸火を使わない
安全性の配慮から加熱手段として電気ヒータが用いられ
ていた。2. Description of the Related Art As rinsing water used in washing machines for dishes and the like, warm water of about 80 degrees is usually used. Conventionally, this hot water generator has been incorporated in a washing machine, and an electric heater has been used as a heating means in consideration of safety without using a so-called open flame.
【0003】[0003]
【発明が解決しようとする課題】しかし、熱源として電
気ヒータを用いることは、例えば、電気容量が3kwで
は、水温約70℃の水6リットルを約90秒間で水温8
0℃に昇温させることはできるが、水温約15℃の水を
約90秒間で約80℃までに昇温させることはできず、
それには10kw以上の電気容量が必要であった。その
ため既存の電気設備を利用する場合には、電気ヒータ加
熱の前段階で温度を他の給湯設備(例えば、石油又はガ
スバーナを用いた湯沸機)を用いて昇温させる必要があ
った。However, when an electric heater is used as a heat source, for example, when the electric capacity is 3 kW, 6 liters of water having a water temperature of about 70 ° C. can be cooled to a water temperature of 8 liters in about 90 seconds.
Although the temperature can be raised to 0 ° C., water at a water temperature of about 15 ° C. cannot be raised to about 80 ° C. in about 90 seconds,
That required an electrical capacity of 10 kW or more. Therefore, when using existing electric equipment, it was necessary to raise the temperature using another hot water supply equipment (for example, a water heater using an oil or gas burner) before heating the electric heater.
【0004】または、大容量の電力供給を行なうために
既存の電気設備等を新たに設計変更する必要があった。
このことは、従来整備を改造するなど煩雑な付帯工事が
必要となるため食器洗浄機導入の障害となっていた。Alternatively, in order to supply a large amount of electric power, it is necessary to newly change the design of existing electric equipment and the like.
This has been an obstacle to the introduction of a dishwasher since complicated auxiliary works such as remodeling the conventional maintenance are required.
【0005】さらに、大量の温水(6リットル/分)を短
時間で供給するためには大熱量のバーナを設置する必要
もあり、熱効率の面から非常に無駄が多く、エネルギー
ロスが大きなものとなっていた。Further, in order to supply a large amount of hot water (6 liters / minute) in a short time, it is necessary to install a burner having a large amount of heat, which is extremely wasteful in terms of thermal efficiency and results in a large energy loss. Had become.
【0006】[0006]
【目的】そこで、本願発明は上述した問題点に鑑みて為
されたものであり、既存の電気設備等の変更などの負担
を少なくして容易に設置することができ、かつエネルギ
ーを有効に利用するために蓄熱式温水生成装置により洗
浄水の昇温を行せることを目的とした新規な蓄熱式温水
生成装置を備えた食器類等洗浄機を提供するものであ
る。 SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above-described problems, and can be easily installed with a reduced burden of changing existing electric facilities and the like, and can effectively use energy. Washing with a regenerative hot water generator
A new regenerative hot water intended to raise the temperature of purified water
It is intended to provide a washing machine for dishes and the like provided with a generator.
You.
【0007】[0007]
【課題を解決するための手段】上記目的を達成するため
に、本願発明にかかる蓄熱式温水生成装置を備えた食器
類等洗浄機は、加熱ヒータ(20b)からの熱を蓄える蓄
熱材(20a)の充填域内に、熱媒体(M)を流通させ
た熱交換回路(20c)を配置した蓄熱槽(20)と、
該蓄熱槽(20)の熱交換回路(20c)と連通した熱
交換回路(21a)を備え、該熱交換回路(21a)に
よる熱交換により貯留水を温水に生成する温水タンク
(21)と、該温水タンク(21)内で熱交換されて凝
縮された熱媒体(M)を一旦貯留する貯留タンク(2
3)と、該貯留タンク(23)内の熱媒体(M)を再び
蓄熱槽(20)の熱交換回路(20c)へ送る循環ポン
プ(24)と、から熱媒体(M)の循環回路を形成した
蓄熱式温水生成機(2)と、該蓄熱式温水生成機(2)
の前記温水タンク(21)に連結した給水管(22)を介
して加圧ポンプ(30)により加圧給水される洗浄機構
(3)内の噴射ノズル(32)と、から構成している。
なお、熱媒体(M)としては、比熱、熱交換効率、又は
蓄熱効率等を考慮して現存する種々の液状の熱媒体が考
えるられるが、水が安価で入手容易性から好ましい。DISCLOSURE OF THE INVENTION In order to achieve the above object, tableware provided with a regenerative hot water generator according to the present invention.
The type washing machine includes a heat storage tank (20) in which a heat exchange circuit (20c) in which a heat medium (M) is circulated is disposed in a filling area of a heat storage material (20a) for storing heat from a heater (20b). ,
A heat exchange circuit (21a) communicating with a heat exchange circuit (20c) of the heat storage tank (20) is provided.
Hot water tank that generates stored water into hot water by heat exchange
(21) and heat exchange in the hot water tank (21) to
Storage tank (2) for temporarily storing the compressed heat medium (M)
3) and the heat medium (M) in the storage tank (23) is again
Circulating pon sent to heat exchange circuit (20c) of heat storage tank (20)
A circulation circuit for the heat medium (M) is formed from the
Regenerative hot water generator (2), and regenerative hot water generator (2)
Via a water supply pipe (22) connected to the hot water tank (21).
Cleaning mechanism in which water is supplied under pressure by a pressure pump (30)
And (3) the injection nozzle (32) .
As the heat medium (M), various existing liquid heat medium can be considered in consideration of specific heat, heat exchange efficiency, heat storage efficiency, and the like. However, water is preferable because it is inexpensive and easily available.
【0008】なお、上記の特許請求の範囲及び課題を解
決する手段の欄で記載した括弧付き符号は、発明の構成
の理解を容易にするため参考として図面符号を付記した
もので、この図面上の形態に限定するものでないことは
もちろんである。[0008] The reference numerals in parentheses described in the claims and in the section of the means for solving the problems are provided with reference numerals for reference to facilitate understanding of the structure of the invention. Needless to say, the present invention is not limited to this form.
【0009】[0009]
【発明の実施の形態】以下、本願発明の実施の形態につ
いて、図面に基づき詳細に説明する。 図1は本願発明
を概念的に示した構成図である。なお、本実施形態の説
明では熱媒体として水を用いた場合について説明する。Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a configuration diagram conceptually showing the present invention. In the description of the present embodiment, a case where water is used as a heat medium will be described.
【0010】図示符号1は食器類等洗浄機(以下「洗浄
機」)であり、温水生成装置2と洗浄機構3の部分から
成る。温水生成装置2の主要構成要素は、蓄熱槽20、
温水タンク21、貯留タンク23、及び循環ポンプ24
である。Reference numeral 1 denotes a dishwashing machine or the like (hereinafter referred to as “washing machine”), which comprises a hot water generator 2 and a washing mechanism 3. The main components of the hot water generator 2 are a heat storage tank 20,
Hot water tank 21, storage tank 23, and circulation pump 24
It is.
【0011】蓄熱槽20は、断熱材で覆って、例えば、
箱状又は円筒状に密封形成し、その内部には蓄熱材20
aを充填配置すると共に、この蓄熱材20aを効率よく
加熱し得るように電気加熱ヒータ20bを配置してい
る。この蓄熱材20aの充填域には、蓄えた熱量を効果
的に熱交換して得るように、例えば、コイル状に又は往
復回路状に配管した熱交換回路20cを配設している。
該熱交換回路20c内には熱媒体としての循環水Mが流
通する。The heat storage tank 20 is covered with a heat insulating material, for example,
It is formed in a box-like or cylindrical shape and has a heat storage material 20 inside.
a, and an electric heater 20b is disposed so as to efficiently heat the heat storage material 20a. In the filling area of the heat storage material 20a, for example, a heat exchange circuit 20c arranged in a coil shape or a reciprocating circuit shape is provided so that the stored heat amount can be effectively exchanged.
Circulating water M as a heat medium flows in the heat exchange circuit 20c.
【0012】温水タンク21は、蓄熱槽20に隣接して
配置し、断熱材で覆って、例えば箱状又は円筒状に水密
形成しており、その内部には前記蓄熱槽20に配置した
熱交換回路20cと連通管25を介して連通させた熱交
換回路21aを配置している。この熱交換回路21a
は、交換効率を考慮した適宜の形状、例えば、コイル
状、往復回路状、又はラジエター状に形成している。該
温水タンク21内には、洗浄のための洗浄水となる温水
Wを所定量蓄える。The hot water tank 21 is disposed adjacent to the heat storage tank 20 and covered with a heat insulating material to form, for example, a box or a cylinder in a water-tight manner. A heat exchange circuit 21a communicated with the circuit 20c via the communication pipe 25 is provided. This heat exchange circuit 21a
Is formed in an appropriate shape in consideration of the exchange efficiency, for example, a coil shape, a reciprocating circuit shape, or a radiator shape. The hot water tank 21 stores a predetermined amount of hot water W serving as cleaning water for cleaning.
【0013】また、温水タンク21には、外部から水を
供給補充するため供給口21bと、洗浄機構3へ温水を
供給する給水管22を連結している。給水管22は、加
圧ポンプ30に連結され、該加圧ポンプ30からは、食
器等31の洗浄手段となる噴射ノズル群32、32、・
・へ連通している。なお、図示符号21cは温水タンク
内の水温と水位を検知するための水位水温センサであ
る。The hot water tank 21 is connected to a supply port 21b for supplying and replenishing water from the outside, and a water supply pipe 22 for supplying hot water to the cleaning mechanism 3. The water supply pipe 22 is connected to a pressure pump 30, and from the pressure pump 30, injection nozzle groups 32, 32,.
・ It is connected to Reference numeral 21c denotes a water level water temperature sensor for detecting the water temperature and the water level in the hot water tank.
【0014】温水タンク21の熱交換回路21aから
は、復水管23aを介して所定容積をもった貯留タンク
23に連通し、該貯留タンク23からは、循環ポンプ2
4を介して前記蓄熱槽20の熱交換回路20cへ連通さ
せる返送管26を配管している。The heat exchange circuit 21a of the hot water tank 21 communicates with a storage tank 23 having a predetermined volume through a condenser pipe 23a.
A return pipe 26 is connected to the heat exchange circuit 20c of the heat storage tank 20 via the pipe 4.
【0015】[0015]
【本実施形態の作用】以上のように構成した本実施形態
は次ぎのように作用する。先ず、加熱ヒータ20bで加
熱された蓄熱材20aは、その蓄熱効果で所定熱量を長
時間保持する。この加熱ヒータ20bへの給電は、例え
ば、電力コストを考慮して深夜電力等を利用して行な
う。The operation of the present embodiment constructed as described above operates as follows. First, the heat storage material 20a heated by the heater 20b retains a predetermined amount of heat for a long time due to its heat storage effect. The power supply to the heater 20b is performed by using late-night power or the like in consideration of the power cost, for example.
【0016】かかる蓄熱材20aが所定の熱量を蓄えた
状態で、貯留タンク23に貯留されていた循環水Mを、
循環ポンプ24により送水管26を介して蓄熱槽20内
の熱交換回路20cに送る(矢印a)。送られた水は、
熱交換により加熱されて水蒸気となって連通管25を介
して、温水タンク21内の熱交換回路21aに送られる
(矢印b)。ここで熱交換されて内部の水Wは所定温度ま
で加熱されて温水となる。With the heat storage material 20a storing a predetermined amount of heat, the circulating water M stored in the storage tank 23 is removed.
The water is sent to the heat exchange circuit 20c in the heat storage tank 20 via the water pipe 26 by the circulation pump 24 (arrow a). The sent water is
It is heated by heat exchange and becomes steam, and is sent to the heat exchange circuit 21 a in the hot water tank 21 via the communication pipe 25.
(Arrow b). Here, heat is exchanged, and the water W inside is heated to a predetermined temperature to become warm water.
【0017】このようにして生成された温水Wは、水位
水温センサ21cが適温である約80℃を検出したとこ
ろで加圧ポンプ30が起動し、給水管22を介して噴射
ノズル32へ供給される(矢印c)。同時に水位水温セン
サ21cによって、温水タンク21の温水の減少を感知
して供給口21bから一定の水が補充される(矢印
d)。The hot water W thus generated is supplied to the injection nozzle 32 via the water supply pipe 22 when the water level water temperature sensor 21c detects an appropriate temperature of about 80 ° C., and the pressurizing pump 30 is started. (Arrow c). At the same time, the water level sensor 21c senses a decrease in hot water in the hot water tank 21 and replenishes a certain amount of water from the supply port 21b (arrow d).
【0018】一方、水蒸気は、温水タンク21内の熱交
換回路21aで熱が奪われ凝集して水に戻り、復水管2
3aを介して貯留タンク23に貯留される(矢印e)。
そして、貯留された水は、水位水温センサ21cからの
情報をもとに制御される循環ポンプ24の作動力で再び
蓄熱槽20の熱交換回路20cに送水管26を介して送
水され、上記した経路で再び温水タンク21の水Wへ熱
量を供給する。On the other hand, the steam is deprived of heat in the heat exchange circuit 21a in the hot water tank 21 and aggregates to return to water.
It is stored in the storage tank 23 via 3a (arrow e).
Then, the stored water is sent again to the heat exchange circuit 20c of the heat storage tank 20 via the water pipe 26 by the operating force of the circulation pump 24 controlled based on the information from the water level water temperature sensor 21c, and Heat is again supplied to the water W in the hot water tank 21 through the route.
【0019】このように、熱媒体M(本実施例では水)
は、蓄熱槽20の熱交換回路20c、温水タンクの熱交
換回路21a、貯留タンク23、及び循環ポンプ24に
より構成した循環経路を循環することとなる。As described above, the heating medium M (water in this embodiment)
Circulates through a circulation path constituted by the heat exchange circuit 20c of the heat storage tank 20, the heat exchange circuit 21a of the hot water tank, the storage tank 23, and the circulation pump 24.
【0020】[0020]
【効果】本願発明は上記した構成を採っているため、温
水タンクに蓄熱槽からの熱量供給により生成した所定温
度の温水を常に必要な量だけ蓄えて置くことができるた
め、食器洗浄作業の必要時に迅速に対応することができ
る。According to the invention of the present application, since a required amount of hot water of a predetermined temperature generated by the supply of heat from the heat storage tank can always be stored in the hot water tank in a required amount, the dishwashing operation is required. Can respond quickly at times.
【0021】また、従来装置であるヒータ加熱式温水生
成装置と同程度の電気容量設備であつても高い昇温能力
を確保することができ、従来装置には必要であったヒー
タ加熱前段でのバーナ加熱による給湯設備が不用とな
り、設備の簡素化と共に、洗浄機の設置コスト(イニシ
ャルコスト)を低く抑えることができる。Further, a high temperature raising capability can be ensured even with the same electric capacity equipment as that of the conventional heater-heating type hot water generator, which is necessary in the conventional apparatus before the heater heating. Hot water supply equipment by the burner heating becomes unnecessary, so that the equipment can be simplified and the installation cost (initial cost) of the washing machine can be reduced.
【0022】さらに、熱源を加熱ヒータによって蓄熱し
た蓄熱材から取出すようにしているため、加熱ヒータへ
の電力供給を低料金の深夜電力を利用するようにすれ
ば,洗浄機の維持コスト(ランニングコスト)も低く抑え
ることができる効果も有する。Further, since the heat source is taken out of the heat storage material stored by the heater, if the power supply to the heater is made of low-priced late-night power, the maintenance cost (running cost) of the washing machine is reduced. ) Is also low.
【図1】 本実施例にかかる蓄熱式温水生成装置を備え
た食器類等洗浄機の概略を示した構成図である。FIG. 1 includes a regenerative hot water generator according to the present embodiment .
It is a lineblock diagram showing the outline of the dishwashers etc. which were used .
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7,DB名) A47L 15/00 - 15/46 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 7 , DB name) A47L 15/00-15/46
Claims (1)
熱材(20a)の充填域内に、熱媒体(M)を流通させ
た熱交換回路(20c)を配置した蓄熱槽(20)と、 該蓄熱槽(20)の熱交換回路(20c)と連通した熱
交換回路(21a)を備え、該熱交換回路(21a)に
よる熱交換により貯留水を温水に生成する温水タンク
(21)と、 該温水タンク(21)内で熱交換されて凝縮された熱媒
体(M)を一旦貯留する貯留タンク(23)と、該貯留タンク(23)内の熱媒体(M)を再び蓄熱槽
(20)の熱交換回路(20c)へ送る循環ポンプ(2
4)と、から熱媒体(M)の循環回路を形成した蓄熱式
温水生成機(2)と、 該蓄熱式温水生成機(2)の前記温水タンク(21)に
連結した給水管(22)を介して加圧ポンプ(30)によ
り加圧給水される洗浄機構(3)内の噴射ノズル(3
2)と、 からなることを特徴とした蓄熱式温水生成装置を備えた
食器類等洗浄機。 1. A heat storage tank (20) in which a heat exchange circuit (20c) in which a heat medium (M) is circulated is arranged in a filled area of a heat storage material (20a) for storing heat from a heater (20b). A heat exchange circuit (21a) communicating with a heat exchange circuit (20c) of the heat storage tank (20) is provided.
Hot water tank that generates stored water into hot water by heat exchange
And (21), heat transfer <br/> body that is condensed by heat exchange with hot water tank (21) in a storage tank for temporarily storing the (M) (23), the heat storage tank (23) in Heat storage tank for medium (M) again
The circulation pump (2) sent to the heat exchange circuit (20c) of (20)
4) and a heat storage type in which a circulation circuit of the heat medium (M) is formed from
The hot water generator (2) and the hot water tank (21) of the regenerative hot water generator (2)
By the pressurized pump (30) through the connected water supply pipe (22)
Nozzle (3) in the cleaning mechanism (3)
2) and a regenerative hot water generator characterized by comprising:
Tableware washing machine.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11167496A JP3058415B1 (en) | 1999-06-14 | 1999-06-14 | Washing machine for dishes etc. equipped with a regenerative hot water generator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11167496A JP3058415B1 (en) | 1999-06-14 | 1999-06-14 | Washing machine for dishes etc. equipped with a regenerative hot water generator |
Publications (2)
Publication Number | Publication Date |
---|---|
JP3058415B1 true JP3058415B1 (en) | 2000-07-04 |
JP2000354580A JP2000354580A (en) | 2000-12-26 |
Family
ID=15850768
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11167496A Expired - Fee Related JP3058415B1 (en) | 1999-06-14 | 1999-06-14 | Washing machine for dishes etc. equipped with a regenerative hot water generator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3058415B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20170056916A (en) * | 2015-11-16 | 2017-05-24 | 송영일 | Hot Water Supply System using Dish Washer |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100824377B1 (en) | 2008-01-22 | 2008-04-23 | 주식회사 포세이돈 | Dish washer for a eating house |
DE102008015796B4 (en) * | 2008-03-26 | 2010-03-18 | Meiko Maschinenbau Gmbh & Co.Kg | Automatic programmer with wastewater heat recovery |
KR101037921B1 (en) * | 2008-11-24 | 2011-05-31 | 한국에너지기술연구원 | Waste-heat withdrawal equipment of Dish washer and Control a method for The Same |
-
1999
- 1999-06-14 JP JP11167496A patent/JP3058415B1/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20170056916A (en) * | 2015-11-16 | 2017-05-24 | 송영일 | Hot Water Supply System using Dish Washer |
KR101868671B1 (en) * | 2015-11-16 | 2018-06-18 | 송영일 | Hot Water Supply System using Dish Washer |
Also Published As
Publication number | Publication date |
---|---|
JP2000354580A (en) | 2000-12-26 |
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