CA1083474A - Water pick-up device for humidifier - Google Patents
Water pick-up device for humidifierInfo
- Publication number
- CA1083474A CA1083474A CA272,139A CA272139A CA1083474A CA 1083474 A CA1083474 A CA 1083474A CA 272139 A CA272139 A CA 272139A CA 1083474 A CA1083474 A CA 1083474A
- Authority
- CA
- Canada
- Prior art keywords
- slit
- pad
- sidewalls
- water pick
- free ends
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F6/00—Air-humidification, e.g. cooling by humidification
- F24F6/02—Air-humidification, e.g. cooling by humidification by evaporation of water in the air
- F24F6/06—Air-humidification, e.g. cooling by humidification by evaporation of water in the air using moving unheated wet elements
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Humidification (AREA)
Abstract
WATER PICK-UP DEVICE FOR HUMIDIFIER
ABSTRACT OF THE DISCLOSURE
A water pick-up device of the rotating drum type has a longitudinal slit in the sidewalls of the drum. The free ends of a strip of porous material, such as open pore polyurethane, are inserted into this slit and the strip is held in position on the sidewalls of the drum by virtue of the fact that the slit is narrower than twice the thickness of the strip. Thus the free ends of the strip are slightly compressed against and frictionally engage each other in the slit.
ABSTRACT OF THE DISCLOSURE
A water pick-up device of the rotating drum type has a longitudinal slit in the sidewalls of the drum. The free ends of a strip of porous material, such as open pore polyurethane, are inserted into this slit and the strip is held in position on the sidewalls of the drum by virtue of the fact that the slit is narrower than twice the thickness of the strip. Thus the free ends of the strip are slightly compressed against and frictionally engage each other in the slit.
Description
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BACKGROUND OF THE_ INVENTION
This invention relates to water pick~up devices for humidifiers. More particularly, this invention relates to water pick-up devices of the so-called rotating drum type.
Humidifiers of the rotating drum type are well known.
For example, reference may be made to Canadian Patent No. 858,924 issued December 22, 1970 and assigned to Electrohome Limited.
Humidifiers of this type may be portable, room humidifiers having air moving fans incorporated therein or may be so-called furnace 10 humidifiers which are installed in association with a hot air 1 furnace and which rely for air movement therethrough on the air circulating fan of the furnace.
A typical, prior art, rotating drum type, water pick-up device consists of a cylindrical drum having an open end, a closed end and open sidewalls on which is mounted an annulus of porous material such as open pore polyurethane sold under the trade mark SCOTTFOAM.
The ring or belt of porous material typically is made i by butting together the free ends of a strip of SCOTTFOAM and securing the free ends to each other by a suitable adhesive or by stitching. In either case it has been found that deterioration ; of the belt takes place most frequently at the joint. Moreover, I belts of this type are mounted on the sidewalls of the drum by I pulling the belt onto th~ drum over one end thereof and then are removed by pulling the belt off the drum over one end thereof.
The latter operation is difficult to perform ~hen the belt has become encrusted with mineral deposits. Also the belt usually is of such a size that it needs to be stretched to install or remove it. Consequently, force is exerted on the drum by the belt during installation and removal and this sometimes causes the drum to break, particularly if the drum is made of a plastics material.
,~
BACKGROUND OF THE_ INVENTION
This invention relates to water pick~up devices for humidifiers. More particularly, this invention relates to water pick-up devices of the so-called rotating drum type.
Humidifiers of the rotating drum type are well known.
For example, reference may be made to Canadian Patent No. 858,924 issued December 22, 1970 and assigned to Electrohome Limited.
Humidifiers of this type may be portable, room humidifiers having air moving fans incorporated therein or may be so-called furnace 10 humidifiers which are installed in association with a hot air 1 furnace and which rely for air movement therethrough on the air circulating fan of the furnace.
A typical, prior art, rotating drum type, water pick-up device consists of a cylindrical drum having an open end, a closed end and open sidewalls on which is mounted an annulus of porous material such as open pore polyurethane sold under the trade mark SCOTTFOAM.
The ring or belt of porous material typically is made i by butting together the free ends of a strip of SCOTTFOAM and securing the free ends to each other by a suitable adhesive or by stitching. In either case it has been found that deterioration ; of the belt takes place most frequently at the joint. Moreover, I belts of this type are mounted on the sidewalls of the drum by I pulling the belt onto th~ drum over one end thereof and then are removed by pulling the belt off the drum over one end thereof.
The latter operation is difficult to perform ~hen the belt has become encrusted with mineral deposits. Also the belt usually is of such a size that it needs to be stretched to install or remove it. Consequently, force is exerted on the drum by the belt during installation and removal and this sometimes causes the drum to break, particularly if the drum is made of a plastics material.
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~ 83474 , . . .
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In accordance with this invention there is provided a rotating drum type water pick-up device in which the strip of porous material does not have its free ends joined together and which is mounted on the drum in such a way that the free ends of the strip are slightly compressed against and frictionally engage each other. Such an arrangement avoids the belt deterioration problem that also is inherent in rotating drum type water pick-up devices where some form of wedge is used to compress the free ends of the belt against the drum to hold the belt in place.
SUMMARY OF THE INVENTION
, -- . .
In accordance with this invention there is provided a water pick-up device for a humidifier~comprising a hollow member rotatable about its longitudinal axis and having an open end, a closed end and open sidewalls, a pad of porous material mounted on said sidewalls, said sidewalls having a slit therein extending from at least adjacent one of said ends to at least adjacent the ~ ;
i other of said ends, said pad having a thickness such that double the thickness thereof is greater than the width of said slit, said pad being held in position on said sidewalls by having the free ends thereof inserted in said slit, said free ends being
.
~ 83474 , . . .
~::: .
In accordance with this invention there is provided a rotating drum type water pick-up device in which the strip of porous material does not have its free ends joined together and which is mounted on the drum in such a way that the free ends of the strip are slightly compressed against and frictionally engage each other. Such an arrangement avoids the belt deterioration problem that also is inherent in rotating drum type water pick-up devices where some form of wedge is used to compress the free ends of the belt against the drum to hold the belt in place.
SUMMARY OF THE INVENTION
, -- . .
In accordance with this invention there is provided a water pick-up device for a humidifier~comprising a hollow member rotatable about its longitudinal axis and having an open end, a closed end and open sidewalls, a pad of porous material mounted on said sidewalls, said sidewalls having a slit therein extending from at least adjacent one of said ends to at least adjacent the ~ ;
i other of said ends, said pad having a thickness such that double the thickness thereof is greater than the width of said slit, said pad being held in position on said sidewalls by having the free ends thereof inserted in said slit, said free ends being
3. compressed against and frictionally engaging each other within - said slit by virtue of the double thickness of said pad in said slit, when in uncompressed state, being thicker than the width of said slit.
BRIEF DESCRIPTION OF THE DRAWINGS
This invention will become more apparent from the fol~owing detailed description, taken in conjunction with the appended drawings, in which:
Figure 1 is a perspective view, partly broken away, of a water pick-up device embodying this invention; and Figure 2 ls a section taken along line 2-2 in Figure 1.
DETAILED DESCRIPTION OF THE INVENTION
INCLUDING THE PREFERRED EMBODIMENT
. .
Referring to the drawings, a water pick-up device 10 '' , , ; . . . .. ...
., , , , , , " , . .. .
1~83474 embodying this invention consists of a rotatable drum composed of two end plates 11 and 12, a shaft 13 interconnecting the end plates and secured thereto, the shaft being located on the longitudinal and rotary axis of the drum, an open mesh cylindrical screen 14 extending between end plates 11 and 12 and constituting the open sidewalls of the drum and a pad or strip 15 of open pore material, such as polyurethane of the aforementioned type, for example, mounted on screen 14.
End plate 11 is of spoked configuration and thus is open to permit air to be blown into the hollow interior of the drum. End plate 12, on the other hand, closes the end of the ; drum where it is located so that air blown into the interior of the drum is forced to pass through screen 14 and pad 15.
The framework of the drum consisting of the two end plates and the screen may be fabricated of a plastics material, for example, or the screen may be a metal that is or that is treated to be corrosion resistant. Any suitable means may be employed to secure screen 14 to end plates 11 and 12.
End plate 12 is formed with a gear 16 on its exterior surface. This is not essential to the invention but provides a - means whereby the drum can be rotated by a drive gear (not shown) engaging gear 16.
Formed in screen 14 and extending between end plates 11 and 12 is a slit 17 that runs parallel to the longitudinal ` axis of the drum. The width of slit 17 and the thickness of pad 15 are selected such that the width of slit 17 is less than double the thickness of pad 15.~ For example, slit 17 may be 3/4"
wide, while pad 15 may be 1/2" thick.
Pad 15 is held in position on the sidewalls of the drum by having its free ends inserted into slit 17. As a result of the slit width - pad thickness relationship previously noted, the free ends of pad 15 are slightly compressed against and :. .' ' . . :
1~83~74 frictionally engage each other within slit 17. On the other hand pad 15 may be readily removed simply by pulling the free `, ends of the pad out of the slit.
As shown in Figure 2, slit 17 may be defined by two spaced-apart members such as rods 18 which extend the length of ; the slit. ~creen 14 is formed around rods 18 creating knuckles , along the rods that serve to assist in resisting removal of the ;~ free ends of pad 15 from slit 17.
In operation, the drum is mounted in the housing of a humidifier with the free ends of shaft 13 journalled in bearings and with a drive gear engaging gear 16 and rotating the drum.
The lower part of the drum dips into water in a water reservoir , within the humidifier housing. In this manner pad 15 picks up water. Air is blown into the interior of the drum through open ., .
end plate 11 and passes through the open sidewalls of the drum ~, and the pores of pad 15 evaporating water retained within pad 15.
While a preferred embodiment of this invention has been described and illustrated herein, those skilled in the art will appreciate that changes and modifications may be made therein without departing from the spirit and scope of this invention as defined in the appended claims.
~ ', ' ' .
"' ', " .
' . , . ' : '
BRIEF DESCRIPTION OF THE DRAWINGS
This invention will become more apparent from the fol~owing detailed description, taken in conjunction with the appended drawings, in which:
Figure 1 is a perspective view, partly broken away, of a water pick-up device embodying this invention; and Figure 2 ls a section taken along line 2-2 in Figure 1.
DETAILED DESCRIPTION OF THE INVENTION
INCLUDING THE PREFERRED EMBODIMENT
. .
Referring to the drawings, a water pick-up device 10 '' , , ; . . . .. ...
., , , , , , " , . .. .
1~83474 embodying this invention consists of a rotatable drum composed of two end plates 11 and 12, a shaft 13 interconnecting the end plates and secured thereto, the shaft being located on the longitudinal and rotary axis of the drum, an open mesh cylindrical screen 14 extending between end plates 11 and 12 and constituting the open sidewalls of the drum and a pad or strip 15 of open pore material, such as polyurethane of the aforementioned type, for example, mounted on screen 14.
End plate 11 is of spoked configuration and thus is open to permit air to be blown into the hollow interior of the drum. End plate 12, on the other hand, closes the end of the ; drum where it is located so that air blown into the interior of the drum is forced to pass through screen 14 and pad 15.
The framework of the drum consisting of the two end plates and the screen may be fabricated of a plastics material, for example, or the screen may be a metal that is or that is treated to be corrosion resistant. Any suitable means may be employed to secure screen 14 to end plates 11 and 12.
End plate 12 is formed with a gear 16 on its exterior surface. This is not essential to the invention but provides a - means whereby the drum can be rotated by a drive gear (not shown) engaging gear 16.
Formed in screen 14 and extending between end plates 11 and 12 is a slit 17 that runs parallel to the longitudinal ` axis of the drum. The width of slit 17 and the thickness of pad 15 are selected such that the width of slit 17 is less than double the thickness of pad 15.~ For example, slit 17 may be 3/4"
wide, while pad 15 may be 1/2" thick.
Pad 15 is held in position on the sidewalls of the drum by having its free ends inserted into slit 17. As a result of the slit width - pad thickness relationship previously noted, the free ends of pad 15 are slightly compressed against and :. .' ' . . :
1~83~74 frictionally engage each other within slit 17. On the other hand pad 15 may be readily removed simply by pulling the free `, ends of the pad out of the slit.
As shown in Figure 2, slit 17 may be defined by two spaced-apart members such as rods 18 which extend the length of ; the slit. ~creen 14 is formed around rods 18 creating knuckles , along the rods that serve to assist in resisting removal of the ;~ free ends of pad 15 from slit 17.
In operation, the drum is mounted in the housing of a humidifier with the free ends of shaft 13 journalled in bearings and with a drive gear engaging gear 16 and rotating the drum.
The lower part of the drum dips into water in a water reservoir , within the humidifier housing. In this manner pad 15 picks up water. Air is blown into the interior of the drum through open ., .
end plate 11 and passes through the open sidewalls of the drum ~, and the pores of pad 15 evaporating water retained within pad 15.
While a preferred embodiment of this invention has been described and illustrated herein, those skilled in the art will appreciate that changes and modifications may be made therein without departing from the spirit and scope of this invention as defined in the appended claims.
~ ', ' ' .
"' ', " .
' . , . ' : '
Claims (6)
1. A water pick-up device for a humidifier comprising a hollow member rotatable about its longitudinal axis and having an open end, a closed end and open sidewalls, a pad of porous material mounted on said sidewalls, said sidewalls having a slit therein extending from at least adjacent one of said ends to at least adjacent the other of said ends, said pad having a thickness such that double the thickness thereof is greater than the width of said slit, said pad being held in position on said sidewalls by having the free ends thereof inserted in said slit, said free ends being compressed against and frictionally engaging each other within said slit by virtue of the double thickness of said pad in said slit, when in uncompressed-state, being thicker than the width of said slit.
2. A water pick-up device according to claim 1 wherein said hollow member is cylindrical in configuration.
3. A water pick-up device according to claim 2 wherein said pad is open pore polyurethane.
4. A water pick-up device according to any one of claims 1, 2 or 3 wherein said slit extends parallel to said longitudinal axis.
5. A water pick-up device according to any one of claims 1, 2 or 3 wherein said open sidewalls are fabricated of screen-ing, said slit being defined by spaced-apart members extending along the length of said slit, said screening being formed around said members and thus creating knuckles along said members that serve to assist in resisting removal of said free ends of said pad from said slit.
6. A water pick-up device according to any one of claims 1, 2 or 3 wherein said open sidewalls are fabricated of metal screening, said slit being defined by spaced-apart members extending along the length of said slit, said screening being formed around said members and thus creating knuckles along said members that serve to assist in resisting removal of said free ends of said pad from said slit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA272,139A CA1083474A (en) | 1977-02-18 | 1977-02-18 | Water pick-up device for humidifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA272,139A CA1083474A (en) | 1977-02-18 | 1977-02-18 | Water pick-up device for humidifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1083474A true CA1083474A (en) | 1980-08-12 |
Family
ID=4107961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA272,139A Expired CA1083474A (en) | 1977-02-18 | 1977-02-18 | Water pick-up device for humidifier |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1083474A (en) |
-
1977
- 1977-02-18 CA CA272,139A patent/CA1083474A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |