JPH0451918Y2 - - Google Patents
Info
- Publication number
- JPH0451918Y2 JPH0451918Y2 JP1987192739U JP19273987U JPH0451918Y2 JP H0451918 Y2 JPH0451918 Y2 JP H0451918Y2 JP 1987192739 U JP1987192739 U JP 1987192739U JP 19273987 U JP19273987 U JP 19273987U JP H0451918 Y2 JPH0451918 Y2 JP H0451918Y2
- Authority
- JP
- Japan
- Prior art keywords
- filter
- bathtub
- bacteria
- bathtub water
- solution
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 50
- 241000894006 Bacteria Species 0.000 claims description 25
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 22
- 239000000356 contaminant Substances 0.000 claims description 21
- 238000000746 purification Methods 0.000 claims description 18
- 239000005708 Sodium hypochlorite Substances 0.000 claims description 9
- 239000003344 environmental pollutant Substances 0.000 claims 2
- 231100000719 pollutant Toxicity 0.000 claims 2
- 239000000243 solution Substances 0.000 description 25
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 9
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000003287 bathing Methods 0.000 description 4
- 230000001580 bacterial effect Effects 0.000 description 3
- 230000002401 inhibitory effect Effects 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- BZSXEZOLBIJVQK-UHFFFAOYSA-N 2-methylsulfonylbenzoic acid Chemical compound CS(=O)(=O)C1=CC=CC=C1C(O)=O BZSXEZOLBIJVQK-UHFFFAOYSA-N 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000009422 growth inhibiting effect Effects 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000000346 sugar Nutrition 0.000 description 1
- 150000008163 sugars Chemical class 0.000 description 1
Landscapes
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Details Of Fluid Heaters (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、浴槽水浄化装置に係り、特に入浴後
の浴槽水の汚れを除去すると共に細菌の増殖を防
止することができる浴槽水浄化装置に関する。[Detailed description of the invention] [Field of industrial application] The present invention relates to a bathtub water purification device, and in particular, a bathtub water purification device that can remove stains from bathtub water after bathing and prevent the growth of bacteria. Regarding.
一般に入浴後の浴槽に溜められた浴槽水は、人
の汚れ具合、入浴人数等により差異はあるもの
の、脂質、タンパク、油脂、糖及び細菌といつた
ミクロ的な汚れ（10μ以下の粒子）と、毛髪及び
垢等から成るマクロ的な汚れとにより汚染されて
いる。
In general, the bath water collected in the bathtub after taking a bath contains microscopic dirt (particles of 10 microns or less) such as lipids, proteins, oils, sugars, and bacteria, although it varies depending on how dirty the person is, the number of people taking the bath, etc. , macroscopic dirt consisting of hair, dirt, etc.
これらの汚染物は、時間的な経過により、細菌
がミクロ的な汚れを栄養源として増殖し、かつ一
部は死滅することにより菌塊を形成する。この時
間経過と細菌数の増加の関係を第４図に示し、細
菌数と浴槽水の状態を第５図に示す。図に示す如
く、浴槽水は、入浴直後の細菌数が10〜102個／
mlであつたものが、約４時間経過後では103から
104個／mlとなつて濁りが生じ、約12時間経過後
では、ぬめり、濁り及び汚臭が生じてしまう。更
に、熱交換器内部と浴槽とを温水が自然循環を行
なう自然循環式の風呂釜では、熱交換器内部にぬ
めり等の汚染物が溜り、剥離した際に浴槽水を汚
染してしまう。 These contaminants form bacterial masses as bacteria multiply using the microscopic dirt as a nutrient source and some of them die over time. The relationship between the passage of time and the increase in the number of bacteria is shown in FIG. 4, and the number of bacteria and the condition of the bath water are shown in FIG. As shown in the figure, the number of bacteria in the bathtub water immediately after bathing is 10 to 10 2 /
ml is hot, but after about 4 hours, it becomes 10 3
When the concentration reaches 104 particles/ml, it becomes cloudy, and after about 12 hours, it becomes slimy, cloudy, and has a foul odor. Furthermore, in natural circulation type bathtubs in which hot water is naturally circulated between the inside of the heat exchanger and the bathtub, contaminants such as slime accumulate inside the heat exchanger and contaminate the bathwater when they come off.
この汚染物を除去するため、従来技術において
は、浴槽水をポンプで吸引し、該浴槽水を例えば
10μ以上の孔径のフイルターによつて濾過した後
浴槽に戻すフイルター浄化装置が提案されてい
る。また、従来技術の他の例としては、浴槽水に
オゾンを供給することにより、浴槽水中の細菌の
増殖を抑制するオゾン発生器を用いた浄化装置も
知られている（実開昭61−111514号公報参照）。 In order to remove this contaminant, in the prior art, the bath water is sucked in by a pump, and the bath water is e.g.
A filter purification device has been proposed in which water is filtered through a filter with a pore size of 10μ or more and then returned to the bathtub. In addition, as another example of the prior art, there is also known a purification device using an ozone generator that suppresses the growth of bacteria in bathtub water by supplying ozone to the bathwater (Utility Model Publication No. 61-111514). (see publication).
前記フイルター浄化装置は、フイルターの孔径
が比較的大きいため、毛髪等のマクロ的な汚染物
は捕捉できるものの、細菌等の約0.1〜0.3μ径程
度のミクロ的な汚染物は捕捉できず、濁り及びぬ
めり等を防止することができないと言う問題点が
ある。なお、このフイルター装置に、更に小孔径
のフイルターを使用することも考えられるが、こ
の場合、毛髪等のマクロ的な汚染物によつて、フ
イルター目詰りが頻繁に起こり、実用に耐えられ
るものではない。
The filter purification device has a relatively large pore size, so although it can capture macroscopic contaminants such as hair, it cannot capture microscopic contaminants such as bacteria with a diameter of about 0.1 to 0.3μ, resulting in turbidity. There is also a problem that it is not possible to prevent slime and the like. It is also possible to use a filter with a smaller pore diameter in this filter device, but in this case, the filter would frequently become clogged with macroscopic contaminants such as hair, making it impractical. do not have.
また、前記オゾン発生器を用いた浄化装置は、
前記フイルターのみによる浄化装置に比べれば汚
濁を少なくすることが出来るものの、充分な菌増
殖抑制効果を達成することができず、逆にオゾン
特有の臭いによつて入浴者に不快感を与えると言
う問題点がある。これを具体的に述べれば、第６
図に示す如く、例えば４人が入浴した直後からオ
ゾンを24時間連続的に0.32ｇ／ｈ注入した場合、
細菌数が103〜104個／mlと増殖抑制効果が少な
く、しかもオゾン臭いが大きい。細菌増殖抑制効
果を上げるために、オゾン発生量を１ｇ／ｈ注入
した場合は、細菌数を102〜103個／mlに抑えられ
るものの、オゾン臭いが極めて大きくなり、とて
も入浴に耐えられるものではない。 Moreover, the purification device using the ozone generator is
Although it is possible to reduce contamination compared to the above-mentioned purification device using only a filter, it is unable to achieve a sufficient effect of inhibiting bacterial growth, and on the contrary, it is said that the ozone-specific odor causes discomfort to bathers. There is a problem. To put this concretely, the 6th
As shown in the figure, for example, when 0.32 g/h of ozone is continuously injected for 24 hours immediately after four people take a bath,
The number of bacteria is 10 3 to 10 4 per ml, which means that the growth-inhibiting effect is low, and the ozone odor is strong. If ozone generation is injected at 1g/h to increase the effect of inhibiting bacterial growth, the number of bacteria can be suppressed to 10 2 - 10 3 cells/ml, but the ozone odor becomes extremely strong, making it difficult to take a bath. isn't it.
本考案の目的は、前記従来技術による問題点を
改善し、入浴後所定時間が経過しても浴槽水を衛
生的に保つことができる浴槽水浄化装置を提供す
ることである。 An object of the present invention is to provide a bathtub water purification device that can improve the problems caused by the prior art and can maintain bathtub water sanitary even after a predetermined period of time has passed after bathing.
本考案は、前記の目的を達成するため、浴槽中
の浴槽水を循環ポンプによりフイルターを介して
浴槽中に循環させ、該フイルターにより浴槽水中
の汚染物を濾過する浴槽水浄化装置において、次
亜塩素酸ナトリウム溶液を溜める溶液タンクと、
その溶液タンク中の次亜塩素酸ナトリウム溶液を
前記循環する浴槽水とフイルターとに供給する機
構を備え、浴槽水を循環ポンプによりフイルター
を介して浴槽中に循環させてフイルター中に浴槽
水中の汚染物および細菌などを濾過付着させた
後、フイルター中に次亜塩素酸ナトリウムを供給
するように構成したことを特徴とする。
In order to achieve the above-mentioned object, the present invention provides a bathtub water purification device that circulates bathwater in the bathtub through a filter using a circulation pump, and uses the filter to filter contaminants in the bathwater. A solution tank for storing a sodium chlorate solution,
A mechanism is provided to supply the sodium hypochlorite solution in the solution tank to the circulating bath water and the filter, and the bath water is circulated into the bath via the filter by a circulation pump, thereby contaminating the bath water in the filter. It is characterized in that it is configured to supply sodium hypochlorite into the filter after filtering and adhering substances, bacteria, etc.
本考案の浴槽水浄化装置は、前記の如き構成よ
りなるので、浴槽水をポンプによりフイルターを
介して浴槽中に循環させると、浴槽水中のマクロ
的な汚染物がフイルターに吸着濾過され、そのフ
イルターおよびマクロ的な汚染物にさらにミクロ
的な細菌などが付着されてフイルター中の細菌の
濃度が最も高くなり、その状態のフイルター中に
次亜塩素酸ナトリウム溶液が供給されるので、フ
イルター中の細菌は効果的に殺菌されて細菌の増
殖を抑制し、入浴後の浴槽水を衛生的に保つこと
ができる。
The bathtub water purification device of the present invention has the above-described configuration, so that when the bathtub water is circulated through the filter by the pump into the bathtub, macroscopic contaminants in the bathtub water are adsorbed and filtered by the filter. Furthermore, microscopic bacteria etc. are attached to the macroscopic contaminants, and the concentration of bacteria in the filter becomes the highest.As sodium hypochlorite solution is supplied to the filter in this state, the bacteria in the filter is effectively sterilized and inhibits the growth of bacteria, keeping the bathtub water sanitary after bathing.
以下、本考案による浴槽水浄化装置の一実施例
を図面を用いて詳細に説明する。第１図は本考案
による浴槽水浄化装置を浴槽に接続した状態を示
す図、第２図及び第３図は次亜塩素酸ナトリウム
（NaClO）溶液を浴槽及びフイルターケースに注
入する状態を説明するための図である。
EMBODIMENT OF THE INVENTION Hereinafter, one embodiment of the bathtub water purification device according to the present invention will be described in detail using the drawings. Figure 1 shows the bathtub water purification device according to the present invention connected to the bathtub, and Figures 2 and 3 illustrate the injection of sodium hypochlorite (NaClO) solution into the bathtub and filter case. This is a diagram for
本考案による浴槽水浄化装置は、第１図に示す
如く、殺菌作用を持つ次亜塩素酸ナトリウム溶液
（以下NaClO溶液と呼ぶ）を溜める溶液タンク２
と、浴槽１００内の浴槽水１０１を往路管８を介
して吸入し、フイルターケース１内のフイルター
１１に供給し、復路管９を介して浴槽１００内に
循環させる循環ポンプ５と、溶液タンク２に溜め
られたNaClO溶液を定量供給する定量ポンプ３
と、該定量ポンプ３により供給されたNaClO溶
液をフイルター１１又は復路管９に供給する様に
モータ４３により切替えられる三方バルブ４と、
リモコン７の指示によりモータ４３、定量ポンプ
３及び循環ポンプ５を駆動する制御部６とを備え
る。 As shown in Fig. 1, the bathtub water purification device according to the present invention consists of a solution tank 2 that stores a sodium hypochlorite solution (hereinafter referred to as NaClO solution) that has a sterilizing effect.
, a circulation pump 5 that sucks bathtub water 101 in the bathtub 100 through an outgoing pipe 8, supplies it to a filter 11 in the filter case 1, and circulates it into the bathtub 100 via a returning pipe 9; and a solution tank 2. Metering pump 3 that supplies a fixed amount of NaClO solution stored in
and a three-way valve 4 that is switched by a motor 43 to supply the NaClO solution supplied by the metering pump 3 to the filter 11 or the return pipe 9;
It includes a control unit 6 that drives a motor 43, metering pump 3, and circulation pump 5 according to instructions from a remote controller 7.
また、前記三方バルブ４は、モータ４３の駆動
によつて、その内部の三方向の貫通孔が第２図に
示す如く定量ポンプ３を介したNaClO溶液を復
路管９と連結する溶液注入パイプ４１に供給する
位置と、第３図に示す如く、NaClO溶液をフイ
ルター１１の内部と連結した溶液注入パイプ４２
に供給する位置とに回動可能に構成されている。 The three-way valve 4 is driven by a motor 43 so that the three-way through-holes therein become a solution injection pipe 41 which connects the NaClO solution via the metering pump 3 to the return pipe 9, as shown in FIG. As shown in FIG.
It is configured so that it can be rotated to a position where it is supplied.
この様に構成された浴槽水浄化装置は、入浴者
が入浴後にリモコン７のスイツチをオンすること
により、まず制御部６が、循環ポンプ５を駆動し
て浴槽水１０１を吸引し、フイルターケース１内
のフイルター１１の内部に供給する。フイルター
１１は略円筒形状をしており、内部に流入された
浴槽水１０１を外周部分の流出する際にマクロ的
な汚染物を濾過する。従つて前記フイルター１１
の内部に供給された浴槽水１０１は、フイルター
１１によつてマクロ的な汚染物が除去された後、
復路管９を介して再び浴槽１００内に戻され、以
後、このフイルター１１を介した循環を所定時間
（例えば、循環流量が、15〜20／minでは約１
時間）行なわれ、これによつてマクロ的な汚染物
がフイルター１１の内部に吸着濾過されると共
に、そのマクロ的な汚染物に細菌などのミクロ的
な汚染物も付着される。また、制御部６は、前記
所定時間の浴槽水の循環の停止前に、モータ４３
を駆動して貫通孔がパイプ４１に通じる様に三方
バルブ４を回動するとともに、定量ポンプ３を駆
動する。これにより、前記循環ポンプ５の駆動に
よつて濾過された復路管９を流通する浴槽水１０
１に溶液注入パイプ４１を介した所定量の
NaClO溶液が混合される。 In the bathtub water purification device configured in this way, when a bather turns on the switch on the remote control 7 after taking a bath, the control unit 6 first drives the circulation pump 5 to suck the bathtub water 101, and the filter case 1 It is supplied to the inside of the filter 11 inside. The filter 11 has a substantially cylindrical shape, and filters macroscopic contaminants from the outer peripheral portion of the bathtub water 101 that has flowed into the inside. Therefore, the filter 11
After macroscopic contaminants are removed from the bathtub water 101 supplied to the inside of the bathtub by a filter 11,
It is returned to the bathtub 100 via the return pipe 9, and then circulated through the filter 11 for a predetermined time (for example, when the circulation flow rate is 15 to 20/min, the flow rate is about 1
As a result, macroscopic contaminants are adsorbed and filtered into the filter 11, and microscopic contaminants such as bacteria are also attached to the macroscopic contaminants. Further, the control unit 6 controls the motor 43 before stopping the circulation of the bathtub water for the predetermined time.
is driven to rotate the three-way valve 4 so that the through hole communicates with the pipe 41, and at the same time, the metering pump 3 is driven. Thereby, the bathtub water 10 that is filtered by the driving of the circulation pump 5 and flows through the return pipe 9
1 through the solution injection pipe 41.
NaClO solution is mixed.
本考案による浴槽水浄化装置は、前記浴槽水１
０１の浄化に次いで、前記三方バルブ４を回転さ
せ、定量ポンプ３を駆動してNaClO溶液をフイ
ルター１１の内部に溶液注入パイプ４２を通して
注入する。このようにすると、前記の如くしてフ
イルター１１の内面に付着した細菌にNaClO溶
液が直接作用して細菌を殺菌すると共にその増殖
が効果的に抑制される。 The bathtub water purification device according to the present invention includes the bathtub water 1
01, the three-way valve 4 is rotated, the metering pump 3 is driven, and the NaClO solution is injected into the filter 11 through the solution injection pipe 42. In this way, the NaClO solution acts directly on the bacteria adhering to the inner surface of the filter 11 as described above, sterilizing the bacteria and effectively inhibiting their growth.
なお、前記循環ポンプ５の駆動による浴槽水の
フイルター濾過は、ポンプ５の流量が15〜20／
minの場合は約１時間、10〜15／minの場合は
約1.5時間程度で浴槽水の汚染物を除去すること
ができるが、例えばコンプレツサー、エジエクタ
ーポンプ等により流水中に空気を混合させて浴槽
に気泡噴流を噴出することにより、汚染物の循環
を促して循環時間を短縮させることもできる。ま
た、前記浴槽水及びフイルターに注入する
NaClO溶液の濃度は、注入直後に約5ppm以上に
なる量が望ましい。 Note that the filter filtration of the bathtub water by driving the circulation pump 5 is performed when the flow rate of the pump 5 is 15 to 20/
Contaminants from the bathtub water can be removed in about 1 hour if the speed is 10 min or about 1.5 hours if the speed is 10 to 15 min. Bubbling jets into the bathtub can also encourage circulation of contaminants and reduce circulation time. Also, inject into the bathtub water and filter
The concentration of the NaClO solution is preferably about 5 ppm or more immediately after injection.
実験の結果によると、浴槽水を循環させてフイ
ルター中にマクロ的な汚染物および細菌を付着さ
せると共に、そのフイルター中にNaClO溶液を
直接注入すると、入浴後の浴槽水を24時間後にお
いても細菌数が102〜103個／ml程度で、ぬめり、
濁り及び汚臭のない状態に保つことができること
を確認した。 Experiments have shown that circulating bath water to trap macroscopic contaminants and bacteria in a filter, and injecting NaClO solution directly into the filter, removes bacteria from the bath water even after 24 hours. The number is about 10 2 to 10 3 / ml, slimy,
It was confirmed that it was possible to maintain a state free of turbidity and foul odor.
以上述べた如く、本考案によれば、フイルター
によつてマクロ的な汚染物を濾過すると共に、そ
の汚染物に細菌などを付着させ、この状態でフイ
ルター中にNaClO溶液を注入することにより殺
菌すると共に細菌の増殖を抑制し、浴槽水を長期
にわたつて衛生的に保つことができる効果があ
る。
As described above, according to the present invention, macroscopic contaminants are filtered through a filter, bacteria, etc. are attached to the contaminants, and in this state, NaClO solution is injected into the filter to sterilize the contaminants. At the same time, it has the effect of suppressing the growth of bacteria and keeping the bath water sanitary over a long period of time.
第１図は本考案による浴槽水浄化装置の一実施
例を示す図、第２図及び第３図はNaClO溶液の
注入状態を説明するための図、第４図は時間経過
による浴槽水中の細菌数の増加状態を示す図、第
５図は浴槽水中の細菌数と浴槽水の状態を示す
図、第６図は浴槽水中に供給するオゾンの量と浴
槽水等の状態を示す図である。
１……フイルターケース、２……NaClO溶液
タンク、３……定量ポンプ、４……三方バルブ、
５……循環ポンプ、６……制御部、７……リモコ
ン、８……往路管、９……復路管、１１……フイ
ルター、４１及び４２……溶液注入パイプ。
Figure 1 is a diagram showing an embodiment of the bathtub water purification device according to the present invention, Figures 2 and 3 are diagrams for explaining the injection state of NaClO solution, and Figure 4 is a diagram showing bacteria in the bathtub water over time. FIG. 5 is a diagram showing the number of bacteria in the bathtub water and the condition of the bathtub water. FIG. 6 is a diagram showing the amount of ozone supplied to the bathtub water and the condition of the bathtub water. 1... Filter case, 2... NaClO solution tank, 3... Metering pump, 4... Three-way valve,
5... Circulation pump, 6... Control unit, 7... Remote control, 8... Outgoing pipe, 9... Returning pipe, 11... Filter, 41 and 42... Solution injection pipe.
Claims (1)
を介して浴槽中に循環させ、該フイルターにより
浴槽水中の汚染物を濾過する浴槽水浄化装置にお
いて、次亜塩素酸ナトリウム溶液を溜める溶液タ
ンクと、その溶液タンク中の次亜塩素酸ナトリウ
ム溶液を前記循環する浴槽水とフイルターとに供
給する機構を備え、浴槽水を循環ポンプによりフ
イルターを介して浴槽中に循環せさてフイルター
中に浴槽水中の汚染物および細菌などを濾過付着
させた後、フイルター中に次亜塩素酸ナトリウム
溶液を供給するように構成したことを特徴とする
浴槽水浄化装置。 A bathtub water purification device that circulates bathwater in a bathtub through a filter using a circulation pump and filters contaminants in the bathwater using the filter, and includes a solution tank for storing a sodium hypochlorite solution, and a solution tank for storing a sodium hypochlorite solution. A mechanism is provided to supply the sodium hypochlorite solution in the tank to the circulating bath water and the filter, and the bath water is circulated through the filter by a circulation pump into the bathtub, and the pollutants and pollutants in the bath water are removed from the filter. A bathtub water purification device characterized in that it is configured to supply a sodium hypochlorite solution into a filter after bacteria and the like are filtered and adhered thereto.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987192739U JPH0451918Y2 (en) | 1987-12-21 | 1987-12-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987192739U JPH0451918Y2 (en) | 1987-12-21 | 1987-12-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0199498U JPH0199498U (en) | 1989-07-04 |
| JPH0451918Y2 true JPH0451918Y2 (en) | 1992-12-07 |
Family
ID=31483579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987192739U Expired JPH0451918Y2 (en) | 1987-12-21 | 1987-12-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0451918Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03161090A (en) * | 1989-11-21 | 1991-07-11 | Rinnai Corp | Sterilization device in bath tub |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52149853A (en) * | 1976-06-07 | 1977-12-13 | Mitsubishi Gas Chemical Co | Methof of purifying irrigation system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0331376Y2 (en) * | 1984-12-24 | 1991-07-03 |
-
1987
- 1987-12-21 JP JP1987192739U patent/JPH0451918Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52149853A (en) * | 1976-06-07 | 1977-12-13 | Mitsubishi Gas Chemical Co | Methof of purifying irrigation system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0199498U (en) | 1989-07-04 |
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