JPH0345256A - Jet device for bathtub - Google Patents
Jet device for bathtubInfo
- Publication number
- JPH0345256A JPH0345256A JP17995789A JP17995789A JPH0345256A JP H0345256 A JPH0345256 A JP H0345256A JP 17995789 A JP17995789 A JP 17995789A JP 17995789 A JP17995789 A JP 17995789A JP H0345256 A JPH0345256 A JP H0345256A
- Authority
- JP
- Japan
- Prior art keywords
- discharge
- pressure
- valve
- ultrasonic
- nozzle
- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000001514 detection method Methods 0.000 claims description 9
- 239000011148 porous material Substances 0.000 claims description 9
- 238000012423 maintenance Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 abstract description 8
- 239000006260 foam Substances 0.000 abstract 6
- 239000007789 gas Substances 0.000 description 30
- 239000012530 fluid Substances 0.000 description 13
- 239000007788 liquid Substances 0.000 description 7
- 230000001737 promoting effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 101100324822 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) fes-4 gene Proteins 0.000 description 1
- 101150115605 atm1 gene Proteins 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
Landscapes
- Percussion Or Vibration Massage (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は微細気泡混合水の吐出と超音波発生噴流水の吐
出とを１個の切替弁の切替で自由に選択できる浴用の噴
出装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an ejection device for a bath that can freely select between ejection of fine bubble mixed water and ejection of ultrasonic-generated jet water by switching one switching valve. It is something.
（従来の技術）
浴槽に微細気泡と通常気泡とを切替えて供給できるよう
にしたものとしては特開昭６２−９４１６０号公報が知
られている。(Prior Art) Japanese Patent Laid-Open No. 62-94160 is known as a device that can switchably supply fine bubbles and normal bubbles to a bathtub.
（発明が解決しようとする問題点）
上記公報に開示されている浴槽は、４個のバルブの切り
替え操作をしなければ微細気泡と通常気泡とを選択でき
ないので手数がかかるという問題があり、また疲労の回
復、健康の増進には超音波が極めて有効であるので、本
発明においては、１個の切替弁の弁操作によって浴槽内
水中に超音波と微細気泡とが簡単に得られるように考え
られたものである。(Problems to be Solved by the Invention) The bathtub disclosed in the above publication has the problem that it is time-consuming because it is not possible to select between fine bubbles and normal bubbles without switching between four valves. Since ultrasonic waves are extremely effective in recovering from fatigue and promoting health, the present invention is designed to easily generate ultrasonic waves and microbubbles in the water in the bathtub by operating a single switching valve. It is something that was given.
（問題点を解決するための手段）
本発明は、浴槽本体内へ微細気泡混合水を吐出する一定
圧保持弁を有する微細気泡吐出用ノズルと、超音波を発
生せしめる超音波発生ノズルとを切替弁を介して分岐連
結し、浴槽本体内の水を循環させるポンプの吸引側管路
に、極く小さい気体吸入細孔を絞り部分に有する気体吸
入装置を設け、ポンプの吐出側管路に、前記切替弁を微
細気泡ポ吐出ノズル側に切替えたとき、吐出側管路の内
圧によって弁が開かれて前記気体吸入装置の細孔へ空気
を送入する圧力検知装置を設け、前記切替弁の切替え操
作によって微細気泡の吐出と超音波の発生とが簡易に選
択できるように構成したものである。(Means for solving the problem) The present invention switches between a fine bubble discharge nozzle having a constant pressure holding valve that discharges fine bubble mixed water into the bathtub body and an ultrasonic generation nozzle that generates ultrasonic waves. A gas suction device having extremely small gas suction pores in the constriction part is provided in the suction side pipe of the pump which is branched and connected via a valve and circulates water in the bathtub body, and a gas suction device having extremely small gas suction pores in the constriction part is installed in the discharge side pipe of the pump. When the switching valve is switched to the micro-bubble discharge nozzle side, the valve is opened by the internal pressure of the discharge side conduit to send air into the pores of the gas suction device. The configuration is such that the discharge of fine bubbles and the generation of ultrasonic waves can be easily selected by a switching operation.
（作用）
切替弁を微細気泡吐出用ノズル側に切替えた状態におい
て、図示省略のスイッチをＯＮとしポンプを駆動させる
と、浴槽本体の吸込口から水を吸引する。微細気泡吐出
用ノズルには吐出寸前までポンプ吐出圧を一定圧（５ｋ
ｇ ／ ａｎ’ 〜９ ｋｇ／ａｎ２）以上に保持する
保持弁を有しているから圧力検知装置の弁装置が第３図
に示す如く押し上げられ、該装置の孔から吸入された空
気は矢印で示すように通路を通り、連結パイプを介して
気体吸入装置の気体吸入細孔へと送気される。そして、
該気体は、気体吸入装置の絞り部分で急激に速く通過中
の水に除圧によって引き込まれてポンプに入り、ポンプ
によって高圧に高められることにより水中に溶解する。(Function) When the switching valve is switched to the fine bubble discharge nozzle side, a switch (not shown) is turned on to drive the pump, and water is sucked from the suction port of the bathtub body. For the fine bubble discharge nozzle, the pump discharge pressure is kept at a constant pressure (5k) until just before discharge.
g/an' ~ 9 kg/an2), the valve device of the pressure sensing device is pushed up as shown in Fig. 3, and the air sucked through the hole in the device is drawn in as shown by the arrow. As shown, the air passes through the passage and is delivered to the gas suction pores of the gas suction device via the connecting pipe. and,
The gas is rapidly and rapidly drawn into the passing water by depressurization at the constriction part of the gas suction device, enters the pump, and is dissolved in the water by being raised to a high pressure by the pump.
また、更に気液混合器で混合溶解し、未溶解の空気は気
液分離槽の自動排気弁から排出して、微細気泡を吐出寸
前までの水圧を一定圧以上に保つ保持弁を有する微細気
泡吐出孔から水中に１０〜２０μｍの微細な気泡として
浴槽本体内へ吐出される。In addition, the fine bubbles are further mixed and dissolved in a gas-liquid mixer, and the undissolved air is discharged from the automatic exhaust valve of the gas-liquid separation tank, which has a holding valve that keeps the water pressure above a certain level until the fine bubbles are about to be discharged. Fine bubbles of 10 to 20 μm are discharged into the bathtub body from the discharge hole into the water.
切替弁を超音波発生ノズル側へ切替えると、ポンプの吐
出圧は４ ｋｇ／ａｎ２〜６ ｋｇ／ａｎ２程度となる
ので圧力検知装置の弁装置が閉鎖され孔からの空気の流
入は遮断されるから気体吸入細孔への送気はない。従っ
て、ポンプによって吸引された水は、超音波発生ノズル
側に流れ、該ノズルの流体流出口端部に設けられた共鳴
穴上部の内径上端面部に衝突して一次乱流を起して該共
鳴穴内に流入した水と、該共鳴穴を通り越して段付き部
分に衝突した流体が二次乱流となって共鳴穴内へ流入し
、縦振動を生ぜしめる。この縦振動によって空気柱の共
鳴（閉管の共鳴）と同様の水中における水柱の共鳴が生
じ、後記する公式による周波数の水中超（３）
音波が発生して超音波発生ノズルから浴槽本体内へ伝播
される。When the switching valve is switched to the ultrasonic generating nozzle side, the discharge pressure of the pump will be about 4 kg/an2 to 6 kg/an2, so the valve device of the pressure detection device will be closed and the inflow of air from the hole will be blocked. There is no air supply to the gas inlet pores. Therefore, the water sucked by the pump flows toward the ultrasonic generation nozzle and collides with the inner diameter upper end surface of the upper part of the resonance hole provided at the end of the fluid outlet of the nozzle, causing primary turbulence and causing the resonance. The water that has flowed into the hole and the fluid that has passed through the resonance hole and collided with the stepped portion become secondary turbulence and flow into the resonance hole, producing longitudinal vibration. This longitudinal vibration causes a resonance in the water column in the water similar to the resonance in the air column (resonance in a closed pipe), and an underwater ultrasonic wave of frequency (3) according to the formula described below is generated and propagates from the ultrasonic generation nozzle into the bathtub body. be done.
（実施例）
本発明の一実施例について説明すると、本発明は、ポン
プ２によって浴槽本体１内の水を吸込口３から吸引し、
吸入側管路４、吐出側管路５を経て浴槽本体１内へ吐出
される強制循環式浴槽システムにおいて使用されるもの
であって、ポンプ２の手前の吸入側管路４には気体吸入
袋Ｂ６が設けられ、ポンプ２に近い吐出側管路５−には
圧力検知装置７が設けられて、該圧力検知装置７と前記
気体吸入装置６とは連結パイプ８を介して連結されてい
る。そＩノて、前記気体吸入袋＠６は絞り部分６Ａの直
径を吸入側管路の直径より約１／２〜２７３程度細い４
〜８印程度に設定し、該絞り部分の通路に該通路６Ａの
直径より約１／２０〜１／１０ はど細い直径０．４
〜０．８印程度の極めて小さな気体吸入細孔９を穿設し
ている。尚前記ポンプ２は吸入圧−５〜−１５ｃｍｌＴ
ｇ で吐出圧が６〜１０感ら！に設定されている。前記
圧力検知装置７には、空（４）
気膜入孔１０と、該孔１０から前記連結パイプ８へ通じ
る通路１１を有し、ポンプ吐出圧が一定圧以上の場合は
該通路１１を開口し、一定圧以下の場合は閉鎖する弁装
置１２が設けられている。浴槽本体１内へ導く吐出側管
路５の終端部には、切替弁１３を介して一方には微細気
泡を浴槽本体内へ吐出する微細気泡吐出用ノズル１４が
、他方の先端には超音波発生ノズル１５が取付けられて
いる。該微細気泡吐出用ノズル１４にはポンプ吐出圧を
一定圧（５〜９ ｋｇ／ａｎ’ ）以上に保つ一定圧保
持弁１６を有しているので、切替弁１３を微細気泡吐出
用ノズル１４側に切替えるとポンプ圧が５〜９ ｋｇ／
ａｎに高まり、前記圧力検知装置１の弁装置１２が開き
、該装置から取入れられた気体は気体吸入装置６の気体
吸入細孔９から吸入側管路４内へ送り出されてポンプ内
に入ってからポンプによって高圧５ ｋｇ／ａｎ２以上
に水圧が高められるため、該空気の大部分は水の中に溶
解し、溶解しなかった一部の気体は気液分離槽２２及び
自動排気弁２３によって外部に排出して前記微細気泡吐
出用ノズル１４から噴出する。その時、水圧が解放され
て低圧に下ると液体に溶解していた気体は、直径１０〜
３０μｍの微細気泡となって槽内に拡散し充満する。尚
この溶解していた気体が液体中で高圧から低圧に変化す
ると微細気泡に変化するのはヘンリーの法則によるもの
である。(Example) To explain one example of the present invention, the present invention sucks water in the bathtub body 1 from the suction port 3 by the pump 2,
This is used in a forced circulation bathtub system in which gas is discharged into the bathtub body 1 through a suction side pipe 4 and a discharge side pipe 5, and a gas suction bag is provided in the suction side pipe 4 before the pump 2. A pressure detection device 7 is provided in the discharge side conduit 5- near the pump 2, and the pressure detection device 7 and the gas suction device 6 are connected via a connecting pipe 8. Therefore, in the gas suction bag @6, the diameter of the constricted portion 6A is about 1/2 to 273 times smaller than the diameter of the suction side conduit4.
The diameter of the constricted passage is approximately 1/20 to 1/10 smaller than the diameter of the passage 6A.
Extremely small gas suction pores 9 of about 0.8 mark are bored. The pump 2 has a suction pressure of -5 to -15 cmT.
The discharge pressure is 6 to 10 at g! is set to . The pressure detection device 7 has an empty (4) membrane inlet hole 10 and a passage 11 communicating from the hole 10 to the connection pipe 8, and when the pump discharge pressure is above a certain pressure, the passage 11 is opened. However, a valve device 12 is provided which closes when the pressure is below a certain level. At the terminal end of the discharge pipe 5 leading into the bathtub body 1, there is a fine bubble discharge nozzle 14 for discharging fine bubbles into the bathtub body through a switching valve 13, and an ultrasonic wave discharge nozzle 14 for discharging fine bubbles into the bathtub body at the other end. A generating nozzle 15 is attached. Since the fine bubble discharge nozzle 14 has a constant pressure holding valve 16 that keeps the pump discharge pressure above a constant pressure (5 to 9 kg/an'), the switching valve 13 is connected to the fine bubble discharge nozzle 14 side. When switching to
an, the valve device 12 of the pressure sensing device 1 opens, and the gas taken in from the device is sent out from the gas suction hole 9 of the gas suction device 6 into the suction side pipe line 4 and enters the pump. Since the water pressure is increased to over 5 kg/an2 by the pump, most of the air is dissolved in the water, and some of the undissolved gas is discharged to the outside by the gas-liquid separation tank 22 and the automatic exhaust valve 23. The fine bubbles are discharged from the nozzle 14 for discharging fine bubbles. At that time, when the water pressure is released and falls to a low pressure, the gas dissolved in the liquid will be
The mixture becomes fine bubbles of 30 μm and diffuses into the tank, filling it. The fact that this dissolved gas changes into fine bubbles when the pressure changes from high to low in a liquid is based on Henry's law.
ヘンリーの法則による空気の水への溶解は、比較的溶解
し難い気体に対しては一般にヘンリーの法則が成立する
。空気の水への溶解の場合はこれに相当する。Regarding the dissolution of air into water according to Henry's law, Henry's law generally holds true for gases that are relatively difficult to dissolve. This is the case when air is dissolved in water.
ヘンリーの法則は次のように表わされる。Henry's law is expressed as follows.
ｐ＝Ｅｘ
ここに、
Ｘ：液相中の溶質ガスのモル分率ｍｏｌ ａｉｒ／ｍｏ
ｌ水ｐ：この液体と平衡状態にある気相の圧力ａｔｍＥ
＝ヘンリー常数 ａｔｍ１モル分率
水に含まれる空気は、Ｈｅｎｒｙ−Ｄａｌｔｏｎの法則
によれば、一定温度の下では液体はそれに接している気
体の一定体積を吸収する。p=Ex where, X: molar fraction of solute gas in the liquid phase mol air/mo
l water p: pressure of the gas phase in equilibrium with this liquid atmE
=Henry constant atm1 mole fraction of air contained in water According to the Henry-Dalton law, at a constant temperature, a liquid absorbs a constant volume of gas in contact with it.
１ ａｔｍの下における水の１ｍｌが含む空気量従って
水は、一定温度の下では常に一定体積の空気を含んでい
る。そして温度が異なれば、上表のように含まれる空気
の体積も異なるのである。Amount of air contained in 1 ml of water under 1 atm Therefore, water always contains a certain volume of air at a certain temperature. And if the temperature differs, the volume of air included will also differ as shown in the table above.
しかるに空気の体積は圧力が変化すれば、それに反比例
して変化する。従って、水に吸収される空気の体積が一
定であるためには、吸収される空気の重量は異なること
になる。このために、水が高圧の所から低圧の所へ移る
場合、空気の一部は水から遊離して直径１０〜３０μｍ
の微細気泡となって水中に拡散する。However, if the pressure changes, the volume of air changes inversely. Therefore, if the volume of air absorbed by water is constant, the weight of air absorbed will be different. For this reason, when water moves from a high pressure place to a low pressure place, some of the air is liberated from the water and has a diameter of 10 to 30 μm.
becomes microscopic bubbles and diffuses into the water.
而して、前記切替弁１３を超音波発生ノズル１５側に切
替えると、ポンプ吐出圧が４ ｋｇ／ａｎ〜６ ｋｇ／
ａｎ２程度となるので圧力検知装置７の弁装置１２は閉
鎖し空気の取入れは遮断される。従って、吸入側管路４
内への気体の供給は停止する。前記超音波発生ノズル１
５は、流体流入側が大径で流（７）
伴流出側が小径のテーパー孔に形成された流体流入路１
７と該流体流入路１７の下流に位置して該流体流入路１
７の流体流出口端部と連通の流体流出路１８と前記流体
流入路１７の流出側の先端部下端に流出側口端部の内寸
りとほぼ同寸の内寸Ｄ′を有し、且つ該内寸りの深さＬ
は超音波帯域波長の少なくとも半波長に相当する長さと
した共鳴穴１９を有し、該共鳴穴１９の上部開口端面部
は流体流入路１７の底面部の略延長線上に位置するよう
にカット２０され、また該共鳴穴１９に近接せる流体流
出路１Ｂ端部に該流体流出路よりも大径の段付き部２１
が形成されている。この段付き部は、流体に二次乱流を
発生させ且つ反転して共鳴穴１９に流入しやすい形状、
好ましくは第６図に示すようなＪ求而がよいが球面形状
に限定されるものではない。また超音波の周波数ｆは、
水中音速Ｃｗ、共鳴穴の深さＬとすると、ｆ＝ｏｗ／２
Ｌの公式によって求められる。Then, when the switching valve 13 is switched to the ultrasonic generation nozzle 15 side, the pump discharge pressure changes from 4 kg/an to 6 kg/an.
Since the pressure becomes about an2, the valve device 12 of the pressure detection device 7 is closed and the intake of air is cut off. Therefore, the suction side pipe line 4
The supply of gas to the inside is stopped. The ultrasonic generation nozzle 1
5 is a fluid inflow passage 1 formed with a large diameter on the fluid inflow side (7) and a tapered hole with a small diameter on the outflow side.
7 and the fluid inflow path 1 located downstream of the fluid inflow path 17.
A fluid outlet passage 18 communicating with the fluid outlet end of No. 7 and a lower end of the outlet end of the fluid inlet passage 17 have an inner dimension D' that is approximately the same as the inner dimension of the outlet end on the outlet side; And the depth L of the inner dimension
has a resonance hole 19 with a length corresponding to at least a half wavelength of the ultrasonic band wavelength, and a cut 20 is formed such that the upper opening end surface of the resonance hole 19 is located approximately on an extension of the bottom surface of the fluid inflow channel 17. Furthermore, a stepped portion 21 having a larger diameter than the fluid outflow path is provided at the end of the fluid outflow path 1B that is close to the resonance hole 19.
is formed. This stepped portion has a shape that generates secondary turbulence in the fluid and makes it easy to reverse and flow into the resonance hole 19.
A J shape as shown in FIG. 6 is preferable, but the shape is not limited to a spherical shape. Also, the frequency f of the ultrasonic wave is
If the underwater sound speed is Cw and the depth of the resonance hole is L, then f=ow/2
It is determined by the L formula.
例えば、水中音速は約１５００ｍ／ｓ であるからＬ
＝２耕とすればｆ＝１５００／（２Ｘ０．０２）（）
＝３７５００Ｈｚ ＝３７．５ＫＨｚとなる。For example, the speed of sound underwater is approximately 1500 m/s, so L
If = 2 plowing, then f = 1500/(2X0.02) () = 37500Hz = 37.5KHz.
一般に厚生省では、浴用超音波装置に関する超音波発生
基準は２０ＫＨｚ 以上の帯域で２０ ｄＢ以上の音
圧と規定しているので、この基準にあてはまる超音波と
なる。In general, the Ministry of Health and Welfare stipulates that the ultrasonic generation standard for bath ultrasonic devices is a sound pressure of 20 dB or more in a band of 20 KHz or more, so the ultrasonic waves that meet this standard.
（発明の効果）
本発明によれば前記の如く、切替弁１３を微細気泡吐出
用ノズル側又は超音波発生ノズル側のいずれかへ切替え
操作するだけで微細気泡浴又は超音波浴が簡易に得られ
るという特徴を有し、身体のこりの治療、健康の維持増
進のために使用される浴用の噴出装置として極めて有効
であると共に従来品に比して構成が簡単であるから安価
に提供できる。(Effects of the Invention) According to the present invention, as described above, a fine bubble bath or an ultrasonic bath can be easily obtained by simply switching the switching valve 13 to either the fine bubble discharge nozzle side or the ultrasonic generation nozzle side. It is extremely effective as a bath squirt device used for treating body stiffness and maintaining and promoting health, and because it has a simpler structure than conventional products, it can be provided at a lower cost.
図面は本発明の一実施例を示したものであって、第１図
は本発明の概略構成図、第２図は圧力検知装置と気体吸
入装置部分の拡大断面図、第３図は圧力検知装置の弁が
開口した状態における断面図、第４図は微細気泡吐出用
ノズルの保持弁の閉鎖している状態における断面図、第
５図は微細気泡吐出用ノズルの保持弁が開口している状
態における断面図、第６図は超音波発生ノズルの断面図
である。
１・・・浴槽本体、 ２・・・ポンプ、４・・・
吸入側管路、 ５・・・吐出側管銘、６・・・気体
吸入装置、 １・・・圧力検知装置、９・・・気体吸
入細孔、 １０・・・気体吸入孔、１２・・・弁装置
、 １３・・・切替弁、１４・・・微細気泡吐出
用ノズル、
１５・・・超音波発生ノズル、
１６・・・一定圧保持弁、
（
１
）The drawings show an embodiment of the present invention, in which Fig. 1 is a schematic configuration diagram of the invention, Fig. 2 is an enlarged sectional view of the pressure detection device and gas suction device, and Fig. 3 is the pressure detection device. A cross-sectional view of the device with the valve open, Figure 4 is a cross-sectional view of the nozzle for discharging fine bubbles with the holding valve closed, and Figure 5 is a nozzle for discharging fine bubbles with the holding valve open. FIG. 6 is a sectional view of the ultrasonic generation nozzle. 1... Bathtub body, 2... Pump, 4...
Suction side pipe line, 5...Discharge side pipe name, 6...Gas suction device, 1...Pressure detection device, 9...Gas suction pore, 10...Gas suction hole, 12...・Valve device, 13... Switching valve, 14... Fine bubble discharge nozzle, 15... Ultrasonic generation nozzle, 16... Constant pressure maintenance valve, (1)
Claims (1)
微細気泡吐出用ノズルと、超音波を発生せしめる超音波
発生ノズルとを切替弁を介して分岐連結し、浴槽本体内
の水を循環させるポンプの吸引側管路に、極く小さい気
体吸入細孔を絞り部分に有する気体吸入装置を設け、ポ
ンプの吐出側管路に、前記切替弁を微細気泡吐出ノズル
側に切替えたとき、吐出側管路の内圧により弁が開かれ
て前記気体吸入装置の細孔へ空気を送入する圧力検知装
置を設けてなるを特徴とする浴用の噴出装置。A fine bubble discharge nozzle having a constant pressure maintenance valve that discharges fine bubbles into the bathtub body and an ultrasonic generation nozzle that generates ultrasonic waves are branched and connected via a switching valve to circulate water within the bathtub body. A gas suction device having extremely small gas suction pores in the throttle part is provided in the suction side pipe of the pump, and when the switching valve is switched to the fine bubble discharge nozzle side, the discharge side is installed in the pump discharge pipe. An ejection device for a bath, characterized in that it is provided with a pressure detection device that causes a valve to be opened by the internal pressure of the pipe line to feed air into the pores of the gas suction device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17995789A JPH0345256A (en) | 1989-07-12 | 1989-07-12 | Jet device for bathtub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17995789A JPH0345256A (en) | 1989-07-12 | 1989-07-12 | Jet device for bathtub |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0345256A true JPH0345256A (en) | 1991-02-26 |
Family
ID=16074921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17995789A Pending JPH0345256A (en) | 1989-07-12 | 1989-07-12 | Jet device for bathtub |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0345256A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100674567B1 (en) * | 2006-02-20 | 2007-01-30 | 박종후 | Fine bubble generating apparatus |
| JP2007054655A (en) * | 2006-11-24 | 2007-03-08 | National Institute Of Advanced Industrial & Technology | Method and device for utilizing nano-bubbles |
-
1989
- 1989-07-12 JP JP17995789A patent/JPH0345256A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100674567B1 (en) * | 2006-02-20 | 2007-01-30 | 박종후 | Fine bubble generating apparatus |
| JP2007054655A (en) * | 2006-11-24 | 2007-03-08 | National Institute Of Advanced Industrial & Technology | Method and device for utilizing nano-bubbles |
| JP4538612B2 (en) * | 2006-11-24 | 2010-09-08 | 独立行政法人産業技術総合研究所 | Cleaning device |
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