KR101010908B1 - Drying apparatus comprising a filter - Google Patents

Drying apparatus comprising a filter Download PDF

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Publication number
KR101010908B1
KR101010908B1 KR1020087018243A KR20087018243A KR101010908B1 KR 101010908 B1 KR101010908 B1 KR 101010908B1 KR 1020087018243 A KR1020087018243 A KR 1020087018243A KR 20087018243 A KR20087018243 A KR 20087018243A KR 101010908 B1 KR101010908 B1 KR 101010908B1
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KR
South Korea
Prior art keywords
filter
liquid
unit
drying
sump
Prior art date
Application number
KR1020087018243A
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Korean (ko)
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KR20080080225A (en
Inventor
네이든 찰스 브라운
토비 제임스 사빌
Original Assignee
다이슨 테크놀러지 리미티드
Priority date (The priority date 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 date listed.)
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Priority to GB0602075.4 priority Critical
Priority to GB0602075A priority patent/GB2434745A/en
Application filed by 다이슨 테크놀러지 리미티드 filed Critical 다이슨 테크놀러지 리미티드
Publication of KR20080080225A publication Critical patent/KR20080080225A/en
Application granted granted Critical
Publication of KR101010908B1 publication Critical patent/KR101010908B1/en

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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47KSANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K10/00Body-drying implements; Toilet paper; Holders therefor
    • A47K10/48Drying by means of hot air

Abstract

SUMMARY OF THE INVENTION The present invention provides a drying apparatus comprising an outer case, part of which forms a cavity in which an article can be dried, an outlet disposed at a lower end of the cavity, and a filter unit disposed downstream of the outlet, wherein The filter unit includes a particle filter and a sterile filter. By having a filter unit comprising a particle filter and a sterile filter, solid matter and bacteria can be removed from the waste liquid. This allows the sanitary and clean liquid to be discharged from the filter unit.

Description

Drying unit with filter {DRYING APPARATUS COMPRISING A FILTER}

The present invention relates to a drying apparatus, and more particularly to a drying apparatus comprising a filter unit for removing particles and bacteria from waste liquid such as water.

Conventional devices for collecting and removing wastewater from drying devices such as hand dryers are well known from US 5,459,944, for example. Wastewater is collected via conduits or the like and sent to a drip collector for subsequent manual removal. The storage of such waste water is unsanitary, can spread bacteria, and requires regular maintenance to empty the drain collector and maintain a hygienic environment.

It is known from JP 11-18999 A to add an antibacterial water absorbing sheet with a large surface to accelerate evaporation. This solves some of the problems of bacterial invasion, reducing the number of emptying water collectors. However, this sheet deposits particulate matter, which adversely affects the performance of the machine over time and requires frequent cleaning.

It is an object of the present invention to provide a drying apparatus which can filter and sterilize liquid more effectively and reliably than prior art apparatus.

The present invention provides a drying apparatus comprising an outer case in which a cavity into which an article can be dried is formed, a outlet disposed at a lower end of the cavity, and a filter unit disposed downstream of the outlet. Silver particle filters and sterile filters. By having a filter unit comprising a particle filter and a sterile filter, solid matter and bacteria can be removed from the waste liquid. This allows the sanitary and clean liquid to be discharged from the filter unit.

Preferably, the sterile filter is located downstream of the particle filter. With this arrangement, the particle filter can remove some solid matter and large particles from the waste liquid to prevent the sterile filter from clogging.

Preferably, the filter unit further comprises flow guide means for guiding the liquid through the filter unit. By providing flow guide means, the liquid can be flowed through the sterile filter. The flow guide means makes it possible to effectively use the sterilizing filter so that the water passing through the filter unit is sufficiently treated.

1a is a perspective view of a hand dryer according to the invention.

FIG. 1B is a side view of the hand dryer of FIG. 1A. FIG.

FIG. 2 is a cross-sectional view illustrating the filter unit in the hand dryer of FIG. 1A.

3 is a partially enlarged view of FIG. 2 showing the internal operation of the hand dryer and the filter unit in more detail.

4 is a perspective view of a liquid treatment module including a filter unit removed from the hand dryer of FIG. 1A.

FIG. 5A is a top perspective view of the hand dryer of FIG. 1A, showing the liquid treatment module partially removed from the hand dryer. FIG.

FIG. 5B is a bottom perspective view of the hand dryer of FIG. 1A, showing the liquid treatment module partially removed from the hand dryer. FIG.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

1a and 1b show a hand dryer 10 according to the invention. The hand dryer 10 includes an outer case 12, a front wall 14a, a rear wall 14b, two side walls 14c and 14d, and a cavity 16. The back wall 14b may comprise a member suitable for attaching the hand dryer 10 to a wall or other suitable fastening structure. It may also include a member for connecting the hand dryer 10 to a power source.

The cavity 16 is formed of opposing arcuate front walls 16a and rear walls 16b. The cavity 16 opens at the top 18 and the size of the opening is sufficient to allow the user's hand (not shown) to be easily inserted into the cavity 16 for drying. High speed airflow is generated by a motor with a fan (not shown). The motor unit and the fan are located in the outer case 12. In order to dry the user's hand, a high velocity air stream is expelled through the two slotted openings 20 arranged in the upper end 18 of the cavity 16. These features are not important to the present invention and will not be described further. The cavity 16 is open laterally as shown in FIGS. 1A and 1B.

As can be seen from FIG. 2, the drain channel 22 is located at the lower end 24 of the cavity 16. The drain channel 22 is formed by the lower edges of the front wall 16a and the rear wall 16b of the cavity 16 and slopes downward toward one side of the cavity 16. The outlet 26 is located in the drain channel 22. The outlet 26 can have any suitable shape. In this embodiment, the outlet 26 comprises a circular aperture with a central plug 26a. The outlet 26 and plug 26a form a narrow annular opening.

2 and 3, the chamber 40 is formed under the outer case 12 below the cavity 16. The chamber 40 is formed by a plurality of chamber walls 40a and has an open lower end. The liquid processing module 30 is located in the chamber 40 and fixed in place by clips, quarter turn fastenings, or other fastening means (not shown).

3 and 4, the liquid treatment module 30 includes a filter unit 200. The filter unit 200 is designed to filter particles and impurities from water and to sterilize bacteria in the water. At the upper end of the filter unit 200, a filter inlet 202 is located and in communication with the outlet 206. A sump 204 is located downstream of the filter inlet 202. The sump 204 has a base 204a. The wall of the sump 206 forms a weir 206a. The height of the via 206a determines the maximum level of liquid that can be contained within the sump 204. The filter outlet 208 is formed by the via 206a, the wall 206 of the sump 204, and the outer wall 210 of the filter unit 200. Filter outlet 208 has an outlet for water overflowing via 206a.

The partition 212 extends from the top of the filter unit 200 to the sump 204 adjacent the filter inlet 202. The partition 212 extends partially into the sump 204 such that the distal end 212a of the partition 212 is spaced apart from the base 204a of the sump 204. The partition 212 is arranged such that the volume of the first region 204b of the sump 204 below the filter inlet 202 is larger than the second region 204c of the sump 204 adjacent the via 206a. .

The sterile filter 214 is located at the base 204a of the sump 204. The sterilizing filter 214 is made of particles of resin containing iodine. The resin is contained at a concentration of 500 g / l. In this embodiment, the sterile filter 214 has a volume of 50 ml. Iodine-containing resins act as a sterile compound that sterilizes any bacteria present in water. The particles of sterile filter 214 are substantially spherical and have dimensions of 0.1 mm to 2 mm (average particle size 0.8 mm). The sterile filter 214 is dimensioned such that the distal end 212a of the partition 212 extends in part to the sterile filter 214.

Particle filter 216 is positioned above sterile filter 214 and includes glass beads 4 mm in diameter. The particle filter 216 is located above the sterile filter 214 in the first region 204b below the filter inlet 202 formed by the partition 212 and the sump 204. Particle filter 216 has a volume of 10 ml. Particle filter 216 also acts as a prefilter, preventing large particles of solid material (particularly soap) from clogging the sterile filter 214. To improve performance, the bed area of particle filter 216 and sterile filter 214 is maximized. The large bed area reduces the pressure drop in the filter and increases its resistance to clogging.

Sterile filter 214 and particle filter 216 are both located within sump 204 below the maximum level of liquid that can be contained within sump 204. This means that when the liquid level in the sump 204 reaches a maximum, the sterilizing filter 214 and the particle filter 216 are completely submerged. This is preferable because the sterilizing filter 214 is wet and dried, since it tends to crack and form bubbles. By keeping the sterile filter 214 always wet, this problem is avoided. This configuration also allows the water flow to be well dispersed. In addition, the maximum liquid level must be sufficiently above particle filter 216 to allow the head to pressurize the bed of the filter.

The liquid treatment module 30 further includes a liquid dispersion unit 35 positioned below the filter unit 200. The liquid dispersion unit 35 is arranged to receive water from the filter outlet 208. The exhaust conduit 37 located in the liquid dispersion unit 35 has a communication path from the liquid dispersion unit 35 to the outside of the outer case 12 of the hand dryer 10. The liquid dispersion unit 35 also includes a collector 100 for collecting water from the filter outlet 208. Collector 100 has a base 100a. A high frequency stirrer in the form of a piezoelectric device 102 is located in the base 100a. The fan 104 is supported on one of the chamber walls 40a. The fan 104 is located outside the chamber 40, which is separated from the liquid processing module 30. The fan 104 allows air to flow into the collector 100 through an aperture 38 provided in the liquid processing module 30.

In use, the water removed from the user's hand during the drying process flows down along the front wall 16a and the rear wall 16b of the cavity 16 and is located at the lower end 24 of the cavity 16. Enter channel 22. The drain channel 22 collects water and directs it toward the outlet 26.

Upon entering the outlet 26, water enters the filter unit 200 through the filter inlet 202 (arrow A). Water falls into the particle filter 216 (arrow B) and spreads evenly over the surface of the particle filter 216 (arrow C). As water moves downward through the glass beads of the particle filter 216 by gravity, large particles of dirt and debris remain behind the particle filter 216. When water reaches the sterile filter 214 (arrow C), most of the solid particles in the water are removed by the particle filter 216.

The sterilization filter 214 sterilizes water by neutralizing the bacteria in the water. Iodine-containing resins release iodine in water at 1 to 5 ppm. Iodine is a strong oxidizer and therefore acts as a broad antimicrobial agent. Water flowing down through the sterilization filter 214 is sterilized and accumulated at the bottom of the sump 204. This process continues and the water collected in the sump 204 increases in volume until the maximum liquid level allowed by the via 206a is reached. Up to this point, both levels of the partition 212 are subjected to the same force due to atmospheric pressure. However, as more water is introduced through the filter inlet 202, the head of the first region 204b is increased, resulting in an imbalance in the force acting on the liquid level on both sides of the partition wall 212. As a result, a downward force is applied to the water in the sump 204 by the mass of the added water. This causes the water to move in the direction indicated by the arrow D. The septum 212 sends the water down towards the base 204 of the sump 204, and downwards through a portion of the sterile filter 214 located in the first region 204b of the sump 204, It is sent up to the via 206a through another portion of the sterile filter 214 located in the second region 204c of the sump 204. Therefore, partition 212 allows water to follow a convoluted path from filter inlet 202 to via 206a. In this embodiment, the convoluted path is in the form of a U-shaped path. If the partition 212 is not present, water entering the sump 204 will flow through the via 206a without passing through the sterilization filter 214 so that sterilization will not occur.

The sterile excess water now overflows via 206a (arrow E) and flows down towards filter outlet 208. Water is collected in the base 100a of the collector 100 in communication with the piezoelectric device 102. The piezoelectric device 102 is set to vibrate at a predetermined frequency and amplitude so that sufficient vibration energy is imparted to the water molecules at the water surface in the collector 100 to overcome the surface tension effect. Therefore, the water turns into fine mist in the interior space of the collector 100.

The fan 104 directs the airflow down into the collector 100. This directs the fine mist down towards the exhaust conduit 37, which is connected out of the outer case 12. This process continues until all the water contained in the collector 100 has been removed from the collector 100 efficiently and sanitarily.

5A and 5B illustrate the removal of the liquid treatment module 30 from the outer case 12 for maintenance or replacement. The liquid treatment module 30 is removed downward from the hand dryer 10. In this embodiment, the filter 200 forms part of the liquid processing module 30 and is removable from the outer case 12 together with the liquid processing module 30.

The present invention is not limited to the above detailed description. Other variations and modifications will be apparent to those skilled in the art.

For example, the drying device need not be in the form of a hand dryer. The drying apparatus may be a laundry dryer in the form of a condenser. In such a laundry dryer, water evaporated from the wet fabric in the drum (cavity) of the laundry dryer can be condensed, filtered by a filter unit and then removed by stirring or evaporation.

The invention may also be used in other types of drying apparatus, for example in other types of household or commercial drying apparatus such as washer-dryers, ventilated laundry dryers or full-length body dryers. Can be.

In addition, other types of liquid dispersing units can be used to disperse the collected liquid, for example, ultrasonic generators, fans, heating elements or electrolyzers. Any of these devices may be used instead of piezoelectric devices to agitate, evaporate or electrolyze water (or other liquids) as needed.

The liquid treatment module need not be located in a chamber present in the drying apparatus. Other arrangements are also possible, for example the module can form part of the outer case, or can be mounted on the outer case of the drying apparatus or outside the outer case.

In addition, the liquid treatment module does not need to be removed from the bottom of the drying apparatus. The liquid treatment module may form part of the top or top of the drying apparatus and may be removed laterally or upwards depending on the conditions of the drying apparatus. In addition, the liquid treatment module can be fixedly maintained inside the drying apparatus without having to be removed.

As a further variant, other types of airflow generators are possible. For example, air outflow or exhaust airflow can be generated from the motor unit. For example, the motor unit for performing the drying process of the hand dryer has a fan. Such a fan can be used in place of an additional fan to generate an air stream to drain the evaporated water out of the drying apparatus.

In addition, the glass beads need not be 4 mm in size. These dimensions can vary from 1 mm to 6 mm in size. In addition, other types of particulate filter media can be used, for example glass fiber brushes, plastic brushes, porous ceramics, plastic beads or small stones. Importantly, the particle filter is formed of an inert material whose density is greater than 1 g / l. The size of the particle filter can be varied and can be of any size suitable to ensure that most of the particles from the water are filtered and removed, thereby clogging the sterile filter.

As a further variant, multiple particle filters may be provided. These particle filters can be placed outside the sump, for example at the filter inlet to pre-filter the water before the water reaches the sump.

The sterile filter need not be formed of a resin of substantially spherical particles having a dimension of 0.1 mm to 2 mm. Other particle shapes and sizes may be used, for example ground. Alternatively, one porous resin block can be used. In addition, the sterilizing filter need not be formed of a resin. Other inorganic media may be used, for example, inorganic poly and may be metal chelates, metal complexes, or crystal structures.

The content of iodine need not be 500 g / l, and may preferably range from 300 g / l to 600 g / l. In addition, the concentration of iodine released in the water may also be out of 1 to 5ppm. Importantly, the concentration is low enough to avoid discoloration of the water and high enough to sterilize the bacteria in the water. In addition, the volume of the sterilization filter may vary in a range sufficient to sterilize the water.

In addition, the antimicrobial agent in the sterile filter need not be iodine and may include other sterile media such as, for example, halogen-containing materials or precursors of halogen-containing materials. These include, but are not limited to, for example, chlorine, bromine, iodine, hypochlorite, or hypobromide. Alternatively, other sterilization methods may be envisioned, for example using silver dioxide particles operated by titanium dioxide or UV radiation.

In addition, the particle filter and the sterilizing filter need not be located entirely in the sump, but may be located partially submerged in water over the sump, outside the water in the sump, or within the sump.

As another variant, the particle filtration medium and the sterilization medium need not be formed in separate steps in the filter, but can be combined to form one unit.

As another variant, the filter need not be removable from the drying apparatus and may remain inside the casing of the drying apparatus when the liquid treatment module is removed. The filter may be removed separately from the liquid treatment module or may be permanently fixed inside the casing of the drying apparatus.

Claims (29)

  1. An outer case in which a cavity into which the article can be dried is formed, the outlet disposed at a lower end of the cavity, and a filter unit disposed downstream of the outlet,
    The filter unit comprises a particle filter and a sterilization filter,
    Drying device.
  2. The method of claim 1,
    And the sterilizing filter is located downstream of the particle filter.
  3. The method according to claim 1 or 2,
    The filter unit further comprises a sump capable of containing a filter inlet, a filter outlet, and a liquid at a constant maximum liquid level.
  4. The method of claim 3,
    The sterilizing filter is located in the sump.
  5. The method of claim 4, wherein
    The sterilizing filter is located below the maximum liquid level.
  6. The method of claim 3,
    And the particle filter is located within the sump.
  7. The method of claim 6,
    And the particle filter is located below the maximum liquid level.
  8. The method of claim 3,
    And the filter outlet includes a portion that determines the maximum liquid level.
  9. The method of claim 3,
    The filter unit further comprises a flow guide means for guiding a liquid through the filter unit.
  10. 10. The method of claim 9,
    The flow guide means further comprises a partition for guiding a liquid through the filter unit.
  11. The method of claim 10,
    The partition forming a convoluted path from the filter inlet to the filter outlet.
  12. The method of claim 11,
    A portion of the partition located inside the sump is arranged to guide the liquid along a U-shaped path.
  13. The method of claim 10,
    And the partition is arranged to separate at least a portion of the sterile filter.
  14. The method of claim 3,
    Wherein the sterilizing filter comprises a material with an antimicrobial agent.
  15. The method of claim 14,
    And the material is a resin.
  16. The method of claim 15,
    And the resin comprises particles having a dimension of at least 0.1 mm.
  17. The method of claim 15,
    And the resin comprises particles having a dimension of 2 mm or less.
  18. The method of claim 14,
    And the antimicrobial agent comprises a halogen containing material or a precursor of a halogen containing material.
  19. The method of claim 18,
    And the halogen-containing material comprises a component selected from the group comprising chlorine, bromine, iodine, hypochlorite, or hypobromide.
  20. The method of claim 15,
    And the resin is arranged to release the antimicrobial agent in the liquid at a concentration of at least 1 ppm.
  21. The method of claim 15,
    And the resin is arranged to release the antimicrobial agent in the liquid at a concentration of 5 ppm or less.
  22. The method of claim 1,
    And the particle filter comprises a layer of beads.
  23. The method of claim 22,
    The diameter of the said beads, 1 mm or more, the drying apparatus.
  24. The method of claim 22 or 23,
    The diameter of the said beads is 6 mm or less, The drying apparatus.
  25. The method according to claim 1 or 2,
    And the filter unit forms part of a liquid processing module that is removable from the drying apparatus.
  26. The method of claim 25,
    The liquid processing unit module further comprises a liquid dispersion unit comprising a collector located downstream of the filter unit, and an evaporation unit in communication with the collector to evaporate the liquid collected in the collector.
  27. The method of claim 26,
    And the evaporation unit is a high frequency stirrer.
  28. The method according to claim 1 or 2,
    And the drying device is a hand dryer and the cavity is dimensioned to receive a user's hand.
  29. delete
KR1020087018243A 2006-02-02 2006-12-14 Drying apparatus comprising a filter KR101010908B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB0602075.4 2006-02-02
GB0602075A GB2434745A (en) 2006-02-02 2006-02-02 Drying apparatus with waste water filter

Publications (2)

Publication Number Publication Date
KR20080080225A KR20080080225A (en) 2008-09-02
KR101010908B1 true KR101010908B1 (en) 2011-01-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020087018243A KR101010908B1 (en) 2006-02-02 2006-12-14 Drying apparatus comprising a filter

Country Status (10)

Country Link
US (1) US20080317448A1 (en)
EP (1) EP1978857A1 (en)
JP (1) JP2009525105A (en)
KR (1) KR101010908B1 (en)
CN (1) CN101336086B (en)
AU (1) AU2006337428B2 (en)
CA (1) CA2641182A1 (en)
GB (1) GB2434745A (en)
TW (1) TW200744514A (en)
WO (1) WO2007088318A1 (en)

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Also Published As

Publication number Publication date
TW200744514A (en) 2007-12-16
AU2006337428B2 (en) 2011-04-07
AU2006337428A1 (en) 2007-08-09
GB0602075D0 (en) 2006-03-15
CN101336086B (en) 2011-05-11
JP2009525105A (en) 2009-07-09
GB2434745A (en) 2007-08-08
CN101336086A (en) 2008-12-31
EP1978857A1 (en) 2008-10-15
US20080317448A1 (en) 2008-12-25
WO2007088318A1 (en) 2007-08-09
CA2641182A1 (en) 2007-08-09
KR20080080225A (en) 2008-09-02

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