Micro Bubble
Development Background of Micro Bubble Bathtub
"Micro Bubble"
Visitors to Japan's famous Nyuto hot spring for the first time will witness a stunning sight.
The whole bathtub looks white, as if milk had been dissolved in water.
The inside of the bath is actually filled with naturally generated micro bubbles.
Even more surprising is how the simple ultra-fine bubbles exert various positive effects on the human body and health.
The Japanese call it a ‘milk-bath’. The common saying is, " Korea has ginseng, Japan has white bubble hot spring water."
Development background of microbubble generator
For the generation of micro bubbles,
a state-of-the-art technology is required to cut and disassemble the bubble mass into sub-micron size.
This technology was finally localized in 2006 by domestic researchers.
In particular, the bubble generating device, which is the core of this technology, did not adopt the Japanese pressurization method. It was developed and patented using our own technology. We developed a vacuum pressurized bubble generating device that is more advanced than the existing method and does not require an air control valve, a fact which surprised the Japanese technical team. In addition, we developed hydrodynamic control device technology as well as a micro bubble generating device with strong power, so our device has excellent operational stability.
What are microbubbles?
Principle of negative ion generation
When water is dropped from above to hit the surface of water or rocks, it causes an instantaneous blockade phenomena of water molecules.
When water droplets are generated, the air around them forms an electric layer. Therefore, the surrounding air layer generates negative ions with negative weak current.
In addition, many negative ions are released in the process of making oxygen by the absorption of carbon dioxide by the trees in dense forests.
Microbubbles!
10 times more negative ions generation than natural waterfalls!
| The number of negative ions in normal forest |
500~800 ions/cm2 |
| The number of negative ions around the waterfall |
5,000~10,000 ions/cm2 |
| The number of negative ions in Milky Spa |
100,000~200,000 ions/cm2 |
Comparative data for micro bubble of other companies
| Contents |
WNL |
Other Companies |
| Bubble generation item |
Vacuum pressurized method |
Bubble generation method |
| Pressurized pump |
Diaphragm method |
Pressurized pump |
| Power supply method |
DC supply method is used and there is no risk of electric shock. |
In the case of AC supply method, there is a risk of electric shock in a humid bathroom. |
| Power consumption |
90W energy saving type |
500W or more energy consumption type |
| Self-absorbing structure |
Since the pump has self-absorption power, it is not required to hold water to drive the pump inside the bubble device. |
Since the pump has no self-absorption power, it is necessary to hold water to drive the pump inside the bubble device. |
| Hygiene problem |
It is possible to maintain device hygienically since all water is discharged after operation of the bubble device is finished. |
It is not possible to maintain hygienically since all water cannot be discharged after operation of the bubble device is finished. A certain amount of contaminated water remains after bath. |
| Bubble discharge amount |
4 liters/minute |
6 liters/minute |
| Bubble size |
Average 4.7 microns |
More than 30 microns on average |
| Number of effective bubbles |
Average 4.7 microns |
25% of bubbles under 10 microns |
| Invention patent |
We hold 5 invention patents on the principle of generating fine bubbles by vacuum pressurization |
Do not hold a patent on the principle of micro bubble generation and are infringing on the patented technology of White Spa's Patent No. 10-674567. |
| Water temperature change |
Since the pump structure is made of a synthetic rubber molding material, it does not affect the change of water temperature. |
Since the pump structure is made of brass, a lot of heat is generated, which causes water temperature to rise. |
