JPH0694031B2 - Water sterilizer - Google Patents
Water sterilizerInfo
- Publication number
- JPH0694031B2 JPH0694031B2 JP61304133A JP30413386A JPH0694031B2 JP H0694031 B2 JPH0694031 B2 JP H0694031B2 JP 61304133 A JP61304133 A JP 61304133A JP 30413386 A JP30413386 A JP 30413386A JP H0694031 B2 JPH0694031 B2 JP H0694031B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- ultraviolet lamp
- ultraviolet
- space
- sterilizer
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 86
- 238000001514 detection method Methods 0.000 claims description 20
- 230000005540 biological transmission Effects 0.000 claims description 13
- 230000000903 blocking effect Effects 0.000 claims description 13
- 230000001954 sterilising effect Effects 0.000 claims description 6
- 238000004659 sterilization and disinfection Methods 0.000 claims description 2
- 239000010453 quartz Substances 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 10
- 241000894006 Bacteria Species 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000011521 glass Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 101000927062 Haematobia irritans exigua Aquaporin Proteins 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 238000003287 bathing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000005365 phosphate glass Substances 0.000 description 2
- 239000005368 silicate glass Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 235000006506 Brasenia schreberi Nutrition 0.000 description 1
- 244000267222 Brasenia schreberi Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 230000009982 effect on human Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
- C02F1/325—Irradiation devices or lamp constructions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/32—Details relating to UV-irradiation devices
- C02F2201/328—Having flow diverters (baffles)
Landscapes
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physical Water Treatments (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、風呂水または飲用水に含まれる各種菌の殺菌
を行う水殺菌装置に関するものである。Description: TECHNICAL FIELD The present invention relates to a water sterilizer for sterilizing various bacteria contained in bath water or drinking water.
従来の技術 従来の水殺菌装置の紫外線ランプは、石英管にて水を遮
断しそのなかに紫外線ランプを格納したもの、もしく
は、ランプを二重構造にし水のなかに直接投入したもの
であり、紫外線ランプの割れによる漏電対策が施されて
いない。2. Description of the Related Art Conventional UV lamps for water sterilizers are those in which water is blocked by a quartz tube and the UV lamp is stored in it, or the lamp has a double structure and is placed directly in the water. No measures have been taken to prevent leakage due to cracking of the UV lamp.
発明が解決しようとする問題点 そのため、従来の水の殺菌装置は、紫外線ランプが破損
した場合でも紫外線ランプへ送電を行うため、それにと
もない水への漏電があり、危険であった。Problems to be Solved by the Invention Therefore, in the conventional water sterilizer, even when the ultraviolet lamp is damaged, power is transmitted to the ultraviolet lamp, and accordingly, there is leakage of water, which is dangerous.
問題点を解決するための手段 従来の問題点を解決するために本発明の水殺菌装置は、
流水路と、前記流水路に設けられ内部に空間部を有する
紫外線透過性水遮断体と、前記水遮断体内の空間部に配
置され前記流水路の水を殺菌する紫外線ランプと、前記
水遮断体内の空間部に配置されており24V以下の電圧の
印加により水の侵入時に導通して前記紫外線ランプへの
送電を停止する一対の検知電極とからなる構成とした。Means for Solving the Problems In order to solve the conventional problems, the water sterilizer of the present invention is
A running water channel, an ultraviolet-transparent water blocking body provided in the running water channel and having a space inside, an ultraviolet lamp disposed in the space within the water blocking body for sterilizing water in the running water channel, and the water blocking body And a pair of detection electrodes which are disposed in the space portion and which conducts when water enters by applying a voltage of 24 V or less and stops power transmission to the ultraviolet lamp.
作用 そのため、水遮断体の破損による異常時には紫外線ラン
プへの送電が停止し、漏電がなくなるので安全である。Action Therefore, in the event of an abnormality due to breakage of the water barrier, power transmission to the ultraviolet lamp is stopped and there is no leakage, which is safe.
実施例 本発明の実施例を第１図〜第３図にて説明する。第１図
は本発明の一実施例である水殺菌装置の断面図，第２図
は第１図のAA′線断面図である。Embodiment An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a sectional view of a water sterilizer which is one embodiment of the present invention, and FIG. 2 is a sectional view taken along the line AA ′ of FIG.
殺菌装置は、流水路１と、この流水路１に設けられ内部
に空間部２を有する水遮断体３と、この水遮断体３内の
空間部２に配置され流水路１の水を殺菌する紫外線ラン
プ４と、水遮断体３内の空間部２に配置され水の浸入時
に導通して紫外線ランプ４への送電を停止する水検知電
極５とからなる。The sterilizer is disposed in the running water channel 1, the water blocking body 3 provided in the running water channel 1 and having the space 2 therein, and the water blocking body 3 arranged in the space 2 inside the water blocking body 3 to sterilize the water in the running water channel 1. It is composed of an ultraviolet lamp 4 and a water detection electrode 5 which is arranged in the space 2 inside the water shield 3 and which conducts when water enters and stops power transmission to the ultraviolet lamp 4.
水は、流入口６から流入し、紫外線ランプ４により殺菌
された後、流出口７から流出する。紫外線ランプ４は、
紫外線反射率が大なる内面を有する金属製容器８にネジ
体９を介して着脱自在に取り付けられ、水遮断体３内の
空間部２の中心部に配置されている。この水遮断体３
は、その上部および下部に落下防止用の突起10および水
もれ防止用シリコンパッキン11を円周方向に配置し、ネ
ジ体９を介して金属製容器８の中心部に着脱自在に取り
付けられている。Water flows in through the inflow port 6, is sterilized by the ultraviolet lamp 4, and then flows out through the outflow port 7. The ultraviolet lamp 4
It is detachably attached to a metal container 8 having an inner surface having a high ultraviolet reflectance via a screw body 9, and is arranged at the center of the space 2 in the water blocking body 3. This water blocker 3
Has a drop-preventing projection 10 and a leak-preventing silicon packing 11 arranged in the upper and lower portions thereof in the circumferential direction, and is detachably attached to the central portion of the metal container 8 via a screw body 9. There is.
紫外線ランプ４は、253.7mmを中心波長とする紫外線を
照射し、この波長をよく透過させる石英もしくは紫外線
透過ガラス（例えば、低Fe2O3含有のケイ酸塩ガラス，
ホウケイ酸低アルカリガラス，りん酸塩ガラス）で照射
部が構成されている。紫外部ランプ４は、その送電をす
るための電気リード線12が設けられているが、この電気
リード線12は紫外線ランプ４の上部および下部から導き
だしたもの、もしくは紫外線ランプ４の片端から導きだ
したもの等の構成が可能である。The ultraviolet lamp 4 irradiates ultraviolet rays having a central wavelength of 253.7 mm, and transmits well this wavelength, such as quartz or ultraviolet transparent glass (for example, silicate glass containing low Fe 2 O 3 ,
The irradiation part is composed of borosilicate low-alkali glass and phosphate glass. The ultraviolet lamp 4 is provided with an electric lead wire 12 for power transmission. The electric lead wire 12 is led from the upper and lower parts of the ultraviolet lamp 4, or is led from one end of the ultraviolet lamp 4. It is possible to configure the ones that are used.
水遮断体３の材質は、石英，フッ素樹脂，紫外線透過ガ
ラス（例えば、低Fe2O3含有のケイ酸塩ガラス，ホウケ
イ酸低アルカリガラス，りん酸塩ガラス）の群より選択
した１種以上であるが、好ましくは石英もしくはフッ素
樹脂を流水路側にコートした石英である。石英もしくは
フッ素樹脂は紫外線の透過が特に優れているため殺菌が
効果的に行なわれる。The material of the water blocker 3 is at least one selected from the group consisting of quartz, fluororesin, and ultraviolet transparent glass (for example, silicate glass containing low Fe 2 O 3 , borosilicate low alkali glass, phosphate glass). However, it is preferably quartz or quartz with a fluororesin coated on the running water channel side. Quartz or fluororesin is particularly excellent in ultraviolet light transmission, so that sterilization is effectively performed.
水検知電極10は、チタン，ステンレス，銅，白金メッキ
のチタン等の電極を２本離して設置したものであり、交
流24V以下の電源を常時付与している。そのため、水の
浸入時に導通し、紫外線ランプ４への送電を停止する回
路を作動させる。この水検知電極10は、ステンレス棒を
低コストである理由より使用し、交流12Vを付与した。
交流12Vは、交流にすることにより水検知用電極10の寿
命が長くなること、12Vにすることにより導通時の水の
漏電にともなう人体への影響が少ないことの理由により
選定した。The water detection electrode 10 is one in which two electrodes made of titanium, stainless steel, copper, platinum-plated titanium, or the like are separated from each other, and a power source of 24 V AC or less is constantly applied. Therefore, when water enters, the circuit is activated, and the circuit that stops the power transmission to the ultraviolet lamp 4 is activated. For this water detection electrode 10, a stainless steel rod was used because of its low cost, and 12 V AC was applied.
The alternating current of 12 V was selected for the reason that the life of the water detection electrode 10 is extended by changing the alternating current and that the influence on the human body due to the leakage of water during conduction is small by changing the alternating current to 12 V.
水検知用電極10は、電気リード線13で制御回路部（第３
図）と導通している。The water detection electrode 10 is connected to the control circuit portion (third part) by an electric lead wire 13.
(Fig.)
なお、この水殺菌装置は、金属製容器８の内側に水遮断
体３を配置し、水がこの遮断体３の周囲360度を移動す
るようにした。そのため、紫外線ランプ４の光は360度
利用され、効率よく殺菌する。In this water sterilizer, the water blocking body 3 is arranged inside the metal container 8 so that water moves around 360 degrees around the blocking body 3. Therefore, the light of the ultraviolet lamp 4 is used 360 degrees, and sterilizes efficiently.
また、この水遮断体３を金属製容器８の片端に配置し、
紫外線ランプ４の片側のみを水に照射する構成も可能で
ある。In addition, the water blocking body 3 is arranged at one end of the metal container 8,
A configuration in which only one side of the ultraviolet lamp 4 is irradiated onto water is also possible.
第３図は、本発明の水の殺菌装置で用いている電気回路
図である。トランス14により100Vより交換された交流12
Vが、水検知電極５にかかっている。一方、交流12Vは、
ダイオード15により直流に交換され、コンパレータ16に
入力される。コンパレータ16は、水検知電極５の導通が
ない時（水遮断体３内の空間部２への水の浸入なし）の
電位と、導通のある時（空間部３への水の浸入あり）と
の電位を比較するものであり、導通のある異常時のみに
トランジスター17への入力を行い、これによりリレー18
が作動して紫外線ランプ４の送電を停止する。一方、水
検知電極５への導通のない正常な使用状態では、コンパ
レータ16はトランジスター17への入力を行わないためリ
レー18が作動せず紫外線ランプ18への送電に支障を生じ
ない。FIG. 3 is an electric circuit diagram used in the water sterilizer of the present invention. AC 12 exchanged from 100V by transformer 14
V is on the water detection electrode 5. On the other hand, AC 12V is
It is converted to direct current by the diode 15 and input to the comparator 16. The comparator 16 has a potential when there is no conduction of the water detection electrode 5 (no entry of water into the space 2 inside the water blocker 3) and a potential when there is conduction (with entry of water into the space 3). The potential of the relay 18 is compared, and the input to the transistor 17 is performed only when there is an abnormality with conduction.
Is activated and the power transmission of the ultraviolet lamp 4 is stopped. On the other hand, in a normal use state in which there is no conduction to the water detection electrode 5, the comparator 16 does not input to the transistor 17, so that the relay 18 does not operate and power transmission to the ultraviolet lamp 18 is not hindered.
紫外線ランプ４は、スイッチ19の開閉により点灯もしく
は消灯がおこなわれる。スイッチ19を「入」にすると、
グローランプ20が点灯しその後紫外線ランプ４が点灯す
る。紫外線ランプ４の点灯と同時にグローランプ20は消
灯するが、これらの制御は安定器21にて行なわれる。The ultraviolet lamp 4 is turned on or off by opening and closing the switch 19. When switch 19 is turned on,
The glow lamp 20 is turned on, and then the ultraviolet lamp 4 is turned on. The glow lamp 20 is turned off at the same time when the ultraviolet lamp 4 is turned on, but the ballast 21 controls these.
第１図・第２図の水殺菌装置と第３図の電気回路を試作
し、本発明の効果を判定した。The water sterilizer shown in FIGS. 1 and 2 and the electric circuit shown in FIG. 3 were prototyped and the effects of the present invention were determined.
この殺菌装置は、1.5lの内容積をもつステンレス製金属
容器の中心部に、本遮断体である石英管を配置し、さら
に石英管の内の空間部の中心部に13W出力の紫外線ラン
プを配置したものである。水は、金属容器の内側と石英
管の外側の間に形成される流水路に滞留する。石英管の
内部の空間部には、ステンレス棒を２本離して配置した
水検知電極が取り付けられており、常に交流12Vが付与
されている。この水検知電極は、水の浸入時には導通
し、紫外線ランプへの送電を停止するようにした。This sterilizer has a quartz tube, which is the main blocker, placed in the center of a stainless steel metal container with an internal volume of 1.5 liters, and a 13 W output UV lamp in the center of the space inside the quartz tube. It is arranged. Water stays in a running channel formed between the inside of the metal container and the outside of the quartz tube. A water detection electrode, in which two stainless steel rods are arranged apart from each other, is attached to the space inside the quartz tube, and 12 V AC is constantly applied. The water detection electrode was made conductive when water entered, and power transmission to the ultraviolet lamp was stopped.
この殺菌装置内に一般細菌数105個/mlの水を流入して紫
外線を20分照射したところ８個/mlまで減少した。一
方、この水遮断体を強制的に破損し、水遮断体内の空間
部に水を強制的に流入したところ、紫外線ランプへの送
電が瞬時に停止し、紫外線ランプは消灯した。このた
め、水への漏電がなかった。When water containing 10 5 bacteria / ml of general bacteria was introduced into this sterilizer and irradiated with ultraviolet rays for 20 minutes, the number of bacteria decreased to 8 bacteria / ml. On the other hand, when the water shutoff body was forcibly damaged and water was forced to flow into the space inside the water shutoff body, power transmission to the ultraviolet lamp was instantaneously stopped and the ultraviolet lamp was turned off. Therefore, there was no leakage of water.
発明の効果 以上のように本発明の水殺菌装置は、流水路と、流水路
に設けられ内部に空間部を有する紫外線透過性遮断体
と、水遮断体内の空間部に配置され流水路の水を殺菌す
る紫外線ランプと、水遮断体内の空間部に配置されてお
り24V以下の電圧の印加により水の侵入時に導通して紫
外線ランプへの送電を停止する一対の水検知電極２本と
を備えた構成としたので、 （１）水のなかに含まれる各種菌の殺菌が行なわれる。Effects of the Invention As described above, the water sterilizer of the present invention has a flowing water channel, an ultraviolet-transparent blocker provided in the flowing water channel and having a space therein, and a water in the flowing water channel arranged in the space of the water blocker. It is equipped with an ultraviolet lamp for sterilizing water, and a pair of water detection electrodes that are placed in the space inside the water shutoff body and that conduct electricity when water enters by applying a voltage of 24 V or less and stop power transmission to the ultraviolet lamp. With the above configuration, (1) various bacteria contained in water are sterilized.
（２）水遮断体の破損による異常時には紫外線ランプへ
の送電を停止するので、漏電なくなり安全である。(2) Since power transmission to the ultraviolet lamp is stopped in the event of an abnormality due to breakage of the water blocker, it is safe because there is no leakage.
（３）紫外線ランプを水遮断体の中に配置した構成であ
るので紫外線ランプが水遮断体で保護され安全性が高ま
る。そのため風呂水の殺菌に用いた場合、浴槽内で人が
入浴しているときに紫外線ランプが万が一破損しても、
水遮断体により水が遮断されるため浴槽内で入浴してい
る人は感電することがない。飲用の場合も同様であり、
人への影響がない。(3) Since the ultraviolet lamp is arranged in the water blocking body, the ultraviolet lamp is protected by the water blocking body and the safety is enhanced. Therefore, when it is used for sterilizing bath water, even if the ultraviolet lamp should be damaged while people are bathing in the bathtub,
Since the water is cut off by the water blocker, a person taking a bath in the bathtub does not get an electric shock. The same applies when drinking,
There is no effect on people.
（４）一対の水検知電極に印加する電圧を24V以下とし
たため、本検知電極の導通の際に浴槽内で人が入浴して
いても、水検知電極の導通による人への影響はない。ま
た、水検知電極の長寿命化が図れる。(4) Since the voltage applied to the pair of water detection electrodes is 24 V or less, even if a person is bathing in the bath when the detection electrodes are conducted, the conduction of the water detection electrodes does not affect the person. In addition, the life of the water detection electrode can be extended.
（５）水遮断体内に一対の水検知電極が配置されている
ため、暗電流により水検知電極間が誤導通してもその誤
導通の電流は水にリークしないため、人への影響はな
い。(5) Since the pair of water detection electrodes are arranged in the water shut-off body, even if the water detection electrodes are erroneously conducted due to the dark current, the erroneous conduction current does not leak to water, so that there is no effect on humans.
第１図は本発明の一実施例である水殺菌装置の断面図、
第２図は第１図のAA′線断面図、第３図は同水殺菌装置
の電気回路図である。 １……流水路、２……空間部、３……水遮断体、４……
紫外線ランプ、５……水検知電極。FIG. 1 is a cross-sectional view of a water sterilizer which is one embodiment of the present invention,
2 is a sectional view taken along the line AA 'of FIG. 1, and FIG. 3 is an electric circuit diagram of the water sterilizer. 1 ... running water channel, 2 ... space part, 3 ... water blocker, 4 ...
UV lamp, 5 ... Water detection electrode.
Claims (1)
間部を有する紫外線透過性水遮断体と、前記水遮断体内
の空間部に配置され前記流水路の水を殺菌する紫外線ラ
ンプと、前記水遮断体内の空間部に配置されており24V
以下の電圧の印加により水の侵入時に導通して前記紫外
線ランプへの送電を停止する一対の水検知電極とを備え
た水殺菌装置。1. A running water channel, an ultraviolet-transparent water blocker provided in the running water channel and having a space inside, and an ultraviolet lamp arranged in the space in the water blocking body to sterilize the water in the running water channel. 24V is installed in the space inside the water block
A water sterilization apparatus comprising: a pair of water detection electrodes that conducts when water enters and stops power transmission to the ultraviolet lamp by application of the following voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61304133A JPH0694031B2 (en) | 1986-12-19 | 1986-12-19 | Water sterilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61304133A JPH0694031B2 (en) | 1986-12-19 | 1986-12-19 | Water sterilizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63156589A JPS63156589A (en) | 1988-06-29 |
| JPH0694031B2 true JPH0694031B2 (en) | 1994-11-24 |
Family
ID=17929436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61304133A Expired - Lifetime JPH0694031B2 (en) | 1986-12-19 | 1986-12-19 | Water sterilizer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0694031B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01151896U (en) * | 1988-03-25 | 1989-10-19 | ||
| JPH02129297U (en) * | 1989-03-31 | 1990-10-24 | ||
| JPH0537389U (en) * | 1991-10-28 | 1993-05-21 | 株式会社日本フオトサイエンス | Light irradiation device |
| AU1869499A (en) * | 1997-12-29 | 1999-08-02 | Povl Kass | A lamp device and a lamp tube as well as a method of regulating the lamp device |
| KR100714649B1 (en) * | 2006-07-14 | 2007-05-07 | 유동주 | Lt type ultraviolet disinfector |
| US7883619B2 (en) * | 2007-11-13 | 2011-02-08 | Access Business Group International Llc | Water treatment system with moisture detector |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5296997U (en) * | 1976-01-20 | 1977-07-20 | ||
| JPS57152994U (en) * | 1981-03-19 | 1982-09-25 |
-
1986
- 1986-12-19 JP JP61304133A patent/JPH0694031B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63156589A (en) | 1988-06-29 |
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