U.S. patent number 3,823,922 [Application Number 05/128,351] was granted by the patent office on 1974-07-16 for humidifier.
This patent grant is currently assigned to Ultimatic Products, Inc.. Invention is credited to Elmer J. McElreath.
United States Patent |
3,823,922 |
McElreath |
July 16, 1974 |
**Please see images for:
( Certificate of Correction ) ** |
HUMIDIFIER
Abstract
A humidifier adapted for mounting on an air conduit to add water
vapor to air flowing through the conduit. The humidifier includes a
flexible resilient plastic tank for holding water. A plurality of
screen discs is rotatably mounted in the tank. Each of the discs
has a plurality of holes, which holes are aligned to allow air to
flow through the discs. The discs are rotated by a motor to pick up
water in the tank and place the water in an air stream. The tank is
secured to an air conduit by a frame which has a plurality of
fingers which extend through apertures in the tank. Wedges in the
fingers hold the tank in position. The tank has a hose connected to
its bottom to provide a drain for the tank. A transparent tube is
connected to one end of the hose, which tube acts as a sight glass
for the tank when the tube is mounted in a stored position and
through which the tank may be drained when the tube and hose are
lowered. The tank also has a pair of windows near the upper portion
thereof to allow inspection of the interior of the tank while the
humidifier is in operation.
Inventors: |
McElreath; Elmer J.
(Northbrook, IL) |
Assignee: |
Ultimatic Products, Inc.
(Rosemont, IL)
|
Family
ID: |
22434916 |
Appl.
No.: |
05/128,351 |
Filed: |
March 25, 1971 |
Current U.S.
Class: |
261/92;
261/DIG.15; 248/311.2; 261/DIG.46; 411/354 |
Current CPC
Class: |
F24F
6/06 (20130101); Y10S 261/15 (20130101); Y10S
261/46 (20130101) |
Current International
Class: |
F24F
6/06 (20060101); F24F 6/02 (20060101); B01f
003/04 () |
Field of
Search: |
;85/7
;261/92,83,DIG.15,34,46 ;85/7 ;248/311 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Miles; Tim R.
Assistant Examiner: Markowitz; Steven H.
Attorney, Agent or Firm: Zummer; Anthony S.
Claims
What is claimed is:
1. A humidifier comprising, a flexible resilient nonmetallic tank
for holding water, said tank having a drain aperture, a motor
support connected to the tank, a drive motor mounted in the motor
support, a drive shaft having one end connected to and supported by
the motor and the other end rotatably supported by the tank, a
plurality of mounting blocks non-rotatably mounted on the drive
shaft, a flat screen disc nonrotatably mounted on each of the
mounting blocks, each of said screen discs having a plurality of
apertures contained therein aligned with the apertures of the other
discs to allow air to flow through the discs, said tank having a
flange extending outwardly from the upper portion thereof, a frame
for supporting the tank, said frame having a plurality of U-shaped
fingers fixed thereto, said flange having an aperture registerable
with each of the U-shaped fingers, each of said U-shaped fingers
having one end fixed to the frame and the other end being free, a
flexible hose having one end connected to the drain aperture, a
translucent tube having one end connected to the other end of the
hose, and means for releasably securing the other end of the
translucent tube to the tank at a level above the level of the
water in the tank.
2. A humidifier comprising, a tank for holding water, said tank
having an outwardly-extending flange, a water carrier movably
mounted in the tank for picking up water in the tank and carrying
water on the water carrier into an air stream, means for driving
the water carrier, a frame positioned adjacent to the flange, said
flange having a plurality of apertures, and a plurality of U-shaped
fingers fixed to the frame and positioned in registry with the
apertures in the flange, each of said fingers having one end fixed
to the frame and the other end being free.
3. A humidifier comprising, a tank for holding water, said tank
having a drain aperture, a water carrier movably mounted in the
tank for picking up water in the tank and carrying water into an
air stream, means for driving the water carrier, a flexible hose
having one end connected to the drain aperture, said hose having a
translucent portion, and means for releasably holding the other end
of the hose at a level above the level of water in the tank.
4. A humidifier comprising, a tank, said tank having a drain
aperture, a plurality of discs rotatably mounted in the tank, means
for rotating the discs in the tank, a float valve for controlling
the level of water in the tank, a flexible hose having one end
connected to the drain aperture of the tank, a translucent tube
connected to the other end of the flexible hose, and means for
holding the open end of the tube near the upper portion of the
tank, whereby the translucent tube provides a view for the level of
water in the tank and release of the tube provides a drain for the
tank.
5. A humidifier comprising, a plurality of screen discs, means for
rotating the screen discs, each of the screen discs is a
substantially flat screen disc having a plurality of large
apertures, means aligning the large apertures to allow air to flow
through the discs; a flexible resilient non-metallic tank means for
supporting said screen discs and for containing water through which
the discs rotate, said tank has a drain aperture in its bottom, a
flexible hose having one end connected to the drain aperture in the
bottom of the tank, said hose having a translucent portion, and
means releasably securing the other end of the hose to the tank at
a level above the level of water in the tank.
6. A humidifier comprising, a frame adapted for mounting adjacent
to a humidifier support, a tank, said tank having a flange adapted
for mounting adjacent to a humidifier support, a plurality of discs
rotatably mounted in the tank for carrying water from the tank into
an air stream, means for rotating the discs, the flange having a
plurality of mounting apertures, and said frame having a plurality
of U-shaped fingers fixed thereto and positioned in registry with
the mounting apertures in the flange, each of said U-shaped fingers
having one end fixed to the frame and the other end being free.
7. A humidifier construction as defined in claim 6, including a
tapered wedge positioned in each of the U-shaped fingers.
8. A humidifier as defined in claim 6 wherein the tank has a drain
aperture in its bottom portion, and including a flexible hose
having one end connected to the drain aperture, a transparent tube
having one end connected to the other end of the hose, and means
for releasably securing the other end of the transparent tube at a
level above the level of the water in the tank.
Description
BACKGROUND OF THE INVENTION
The use of humidifiers in buildings during the winter season is
well-accepted in view of the fact that medical authorities
generally agree that is more healthful if the relative humidity in
a building were kept at a selected level rather than the
practically desert conditions which occur when cold air from the
outside is raised to a normal room temperature. In the ordinary
operation of a humidifier, such as that disclosed in U.S. Pat. No.
3,190,624, water is added to a tank. A water carrier is provided
for lifting the water from the tank and passing air through or near
the carrier so that the water is evaporated into the air stream.
Customarily, the water which is used in a humidifier is ordinary
tap water. In many localities, especially where the tap water is
well water, the water has an extremely high mineral content. As the
water is evaporated from the water carrier, the minerals are left
behind so that the minerals are left on the water carrier and in
the tank which holds the water. After a season's use of a
humidifier, the water carrier is often encrusted with minerals and
the tank is also filled with the minerals. If the humidifier is not
cleaned for a substantial period, the tank and water carrier become
so encrusted with minerals that the humidifier is no longer
efficient in adding water vapor to an air stream.
A humidifier which may be used in a home installation must be
compact, that is, it must be able to add a substantial amount of
water vapor to an air stream, but it must not take up much space.
This is especially true for installations in a home central heating
system where the home does not have a basement. In many homes
without a basement, a forced hot air system is installed in a
closet or small utility room wherein space is at a premium and it
is difficult to add a humidifier to an existing installation. Thus,
the humidifier, though compact, must be highly efficient in order
to add a sufficient quantity of water vapor.
The humidifier which is added to an existing system must be easy to
install and to be removed easily for cleaning. As was mentioned
above, humidifiers customarily collect a substantial amount of
minerals over a heating season so that in order to remove the
minerals, the humidifier must be partially disassembled easily for
cleaning. Along with the disassembly, the humidifier must be easily
drained. The common method of securing a humidifier onto a duct is
to use sheet metal screws or nuts and bolts. However, these screws
or nuts and bolts are difficult to install in a blind location, and
it is difficult to attach such a humidifier without assistance.
SUMMARY OF THE INVENTION
The present humidifier is one which is particularly adapted for
installation for domestic use. It is compact and delivers a large
amount of water vapor to an air stream. It is known to use a
rotating screen disc to raise the water from a water tank and place
the water into an air stream. It has been observed that the maximum
amount of evaporation occurs at the raw edges of a screen. In order
to provide an additional amount of raw edges in the present device,
apertures are formed in the screen discs. The apertures in the
screen discs are aligned so that air may flow through the
apertures, picking up additional water vapor. Even when the flow is
parallel to the planes of the screens, the amount of water which is
evaporated from the raw edges is increased.
The use of apertures in a screen disc provides an effective solid
screen for the water carried on the screen. It may be appreciated
that the screen could be a disc having radial slots from the outer
periphery to the center. However, water droplets along the edge of
a radial slot tends to run down along the edge toward the center of
rotation, thereby removing the water on the raw edge without
evaporating. Furthermore, the disc is substantially weakened by the
slots since there is very little material at the center where the
slots converge. By the use of apertures in the body of the screen,
there is no opportunity for water to run along an edge toward a
drive shaft. Rather, the water droplets are held on a raw edge of
the screen or on the main body thereof in an air stream to achieve
maximum vaporization.
Cleaning of the present humidifier is greatly simplified by making
the humidifier readily removable. The main portion of the
humidifier may be removed from a supporting surface by first
removing a plurality of wedge fingers, which wedges hold the
humidifier in place, to allow the humidifier to drop down. It may
be appreciated that reassembly of the humidifier is facilitated by
the use of these fingers since the fingers are simply pushed into
the apertures. Then, the wedges are driven into the fingers to
provide a tight seal between the humidifier and a supporting
portion. This may be contrasted with the customary method of
supporting a device on a sheet metal duct or other support, whereby
sheet metal screws or bolts are used with a nut. It is very
difficult to align a nut initially, especially when the humidifier
is being mounted by a person without assistance. The operator must
hold up the humidifier, align the nut, and drive the screw or bolt
at the same time.
The subject humidifier arrangement also facilitates cleaning of the
humidifier. A thorough cleaning may be performed once the
humidifier is removed; however, intermittent cleaning is
accomplished by periodic draining. Once the humidifier is removed
from its mount, it is a relatively simple matter to remove the
minerals which have collected in the humidifier. The humidifier
tank is constructed in such a manner that the screen discs may be
easily lifted out of the tank so that the discs remain as a unit.
The minerals which adhere to the tank are simply removed by flexing
the tank to break the minerals and release the minerals from the
tank. A reasonable amount of minerals on the screen discs promotes
evaporation from the discs. When the mineral build-up is too great,
so that evaporation is impeded; the inexpensive screen discs are
discarded.
As a convenience for draining the tank, the instant humidifier has
a hose connected to a drain aperture in the bottom of the tank. A
transparent tube is connected to the free end of the hose, which
tube is removably connected to the tank at a point above the level
of the water in the tank. This transparent tube provides a sight
glass for ready viewing of the level of the water in the tank to
see that the tank has sufficient water and to inspect the condition
of the water to determine whether the water should be drained and
replaced with fresh water.
It is therefore a principal object of the present invention to
provide an improved humidifier construction which is compact and
provides a high volume of water vapor.
It is another object of this invention to provide an improved
construction of a humidifier wherein the humidifier may be readily
cleaned and maintained.
It is still another object of the instant invention to provide a
humidifier construction which allows inspection of the interior of
the humidifier during operation of the humidifier.
It is a further object of the herein-disclosed invention to provide
an improved construction for a humidifier, which humidifier may be
easily installed, removed and reinstalled.
It is a still further object of the present invention to provide a
humidifier construction which may be readily installed in an
existing heating installation.
It is still another object of this invention to provide a
humidifier construction which is economical to manufacture.
Other objects and uses of the present invention will become readily
apparent to those skilled in the art upon a perusal of the
following specification in light of the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view showing a humidifier embodying the
present invention suspended from the bottom of an air plenum;
FIG. 2 is an exploded view of the humidifier shown in FIG. 1 in
order to show the interior construction of the humidifier and the
interrelationship of the several parts;
FIG. 3 is a cross-sectional view taken on Line 3--3 of FIG. 1,
showing the interrelationship of the plenum, a gasket, a support
finger extending through an aperture in a tank flange, and a
wedge;
FIG. 4 is an enlarged perspective view of a finger and wedge
construction;
FIG. 5 is an enlarged fragmentary portion of one of the screen
discs, showing some of the apertures contained in the discs and
showing the raw edge construction;
FIG. 6 is a cross-sectional view through the humidifier shown in
FIG. 1, but with the hose removed;
FIG. 7 is a cross-sectional view taken on Line 7--7 of FIG. 6,
showing a disc and a disc support construction;
FIG. 8 is a cross-sectional view taken on Line 8--8 of FIG. 6,
showing the interrelationship of a valve float and an end lock for
the discs;
FIG. 9 is a cross-sectional view taken on Line 9--9 of FIG. 6,
showing the interrelationship of the drive shaft and a bearing
support of the tank;
FIG. 10 is an exploded view, showing the interrelationship of a
screen disc, a screen disc mount, and the drive shaft, and the
mount is partially broken away to show its interior
construction;
FIG. 11 is a partial exploded view, showing the humidifier of FIG.
1 mounted on the side of an air plenum; and
FIG. 12 is a perspective view of the humidifier shown in FIG. 1,
showing the humidifier of FIG. 1 mounted on a circular duct.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now to the drawings, and especially to FIG. 1, a
humidifier generally indicated by numeral 20 is shown mounted on a
duct 22. FIG. 2 shows the general construction of the humidifier
20. The humidifier 20 includes a generally rectangular high
temperature, medium impact anti-leach polypropylene molded tank 24,
a drive housing 26 made of the same material as the tank removably
mounted on the tank, and a drive motor 28 mounted in the housing
and removably connected to a drive shaft 30. A water carrier 32 is
mounted on the drive shaft 30 to rotate in the tank. A tank mount
34 supports the tank on the duct 22. A water drain 36 is mounted on
the tank 24 to provide a convenient means for removing the water
from the tank. As may be best seen in FIG. 6, a water level control
38 is mounted on the side of the tank for regulating the level of
the water in the tank.
The tank 24 is molded in a single piece so that there is no
opportunity for water leaks to occur at seams or joints and the
tank may be manufactured economically. The tank has a pair of side
walls 40, each of which has a window 42 mounted therein to allow
inspection of the water carrier 32 and to determine whether the
water carrier is operating when the humidifier is mounted on the
duct. Formed integral with the side walls 40 is a bearing end wall
44. The bearing end wall includes a shaft support 46 formed
integral therein, which has a shaft slot 48 formed therein to
receive one end of drive shaft 30. On the end opposite the bearing
wall, there is a drive end wall 50 formed integral with the side
walls 40. The wall 50 has a drive shaft opening 52 formed therein
to receive the drive shaft 30. A pair of mounting apertures 54 is
formed in the end wall 50 for receiving a portion of the drive
housing. A bottom 56 is formed integral with the side walls and the
end walls. The bottom has a slope toward one end, with a drain
spout 58 formed integral with the bottom at the lowest part of the
bottom. Surrounding the outer periphery of the upper portion of the
tank, there is a mounting flange 60. The mounting flange 60
cooperates with the tank mount 34 to hold the tank in position. The
mounting flange has a lip 61 formed integral therewith, which lip
61 provides a positioning device for a flexible sponge rubber
gasket 62 between the mounting flange and the duct 22. A ridge 63
is formed integral with the flange to improve the seal between the
gasket 62 and the flange. The mounting flange has three mounting
apertures 64 on each side to receive the tank mount 34. The two
side walls have hose supports 65 formed integral with the side
walls and the flange 60. The supports 65 each have a T-slot 66 to
receive a T-hook 68 connected to the drain 36.
The drive housing 26 consists of two parts, a molded container 70
and a cover 72 removably and slideably mounted on the container.
The container 70 includes a front wall 74, which has a pair of
mounts 76 formed integral therewith. Each of the mounts includes a
pair of resilient prongs 78 which are positionable in their
respective apertures 54 to hold the container 70 in position. The
front wall 74 also has a pair of mounting grooves 80 formed
interiorly therein to receive and to support the drive motor 28.
Formed integral with the front wall is a pair of side walls 82.
Each of the side walls has a cover slot 84 formed integral
therewith to receive slideably the cover 72. A rear wall 86 is
formed integral with the side walls 82. The cover 72 is
substantially flat and has a stop bead 88 formed integral with one
edge thereof. The cover 72 is slideably receiveable in the slots
84, and the bead 88 provides a stop to stop the cover and to
provide a convenient means for grasping the cover for sliding the
cover.
The drive motor 28 is a conventional electric motor having a motor
housing 90 fixed thereto. The motor housing has a pair of mounting
ears 92 extending outwardly therefrom and slideably mountable in
the mounting grooves 80 of the front wall. The drive shaft 30 has a
drive end 94 which slideably and mateably engages the drive motor
to be driven thereby. The other end of the drive shaft 30 is a
bearing end 96 which is rotatably mounted in the shaft slot 48 of
the shaft support 46. Between the two ends of the drive shaft,
there is the carrier portion 96, which supports and drives the
water carrier 32.
The water carrier 32 includes a plurality of flat screen discs 100
drivingly connected to the drive shaft 30 by mounting blocks 102.
Each of the flat screen discs is, in this instance, an 18 mesh
aluminum screen wire, although a different size mesh such as 16
mesh may be used instead of an 18 mesh. Each of the screens has an
irregular undulating outer edge 104, which edge is raw. Each of the
screens has a plurality of circular apertures 106 formed therein.
The edges of the circular apertures are also raw. In the center of
each of the screens, there is a mounting aperture 108 which
receives mounting block 102.
Each mounting block 102 is made of a molded polypropylene material
and includes a hollow square base 110 having a hollow square screen
support 112 formed integral with the base 110. The support 112 has
a square shaft aperture 113 formed therein and in registry with a
square shaft tube 114 formed integral with the support 112. The
tube 114 slideably receives the drive shaft 30. The tube 114 is
wholly contained within the base 110 and terminates within the base
to allow a distance between the end of the tube and the plane of
the base to be greater than the thickness of the support 112. The
interior of the base 110 defines a square recess 116 which mateably
receives an adjacent support 112. Each square screen support 112 is
mateably positioned in the respective mounting aperture 108 of the
respective screen disc. As may be seen in FIG. 6, the screen
support 112 of a mounting block is positioned in an aperture 108 of
the respective screen, and the adjacent mounting block is then
positioned over the square screen support 112 to sandwich a portion
of the screen disc between the blocks and thereby provide support
for the screen. An end fastener 118 holds the last mounting block
on the shaft at one end. A pair of support fingers 120 is mounted
on the drive shaft in engagement with the last screen to hold the
screen upright, and a fastener 122 secures the fingers in place.
The support fingers 120 prevent the last screen disc from being
bent over and into possible engagement with the water level control
38. It is evident that the mounting blocks are held between the two
fasteners 118 and 122.
The water level control 38 is mounted on side wall 40. The water
level control includes a valve 124 which is connected to a
conventional source of water, which source is not shown herein. The
valve is connected to a stem 126, which is in turn connected to a
float 128. The float regulates the level of water in the tank 24 in
a conventional manner.
The tank mount 34 includes a wire frame 130, which is rectangular
in shape and conforms to the shape of the mounting flange 60 of the
tank. Six U-shaped spring fingers 132 are mounted on the frame 130.
Each of the spring fingers 132 has a fixed arm 134, which is fixed
to the frame 130, and a resilient free arm 136. A wedge 138 is
positionable in each of the spring fingers 132 to force the flange
60 toward the plenum.
The drain 36 includes a flexible hose 142, which is attached to the
drain spout 58 at one end. A transparent tube 144 is attached at
one end to the other end of the hose and the other end of the tube
is open. The T-hook 68 is secured to the open end of the
transparent tube 144, and the T-hook is mounted in the T-slot 66 to
hold the open end of the tube above the level of the drive shaft
opening 52. The level of the water in the tank may be readily
observed from a distance by noting the level of water in the
transparent tube 144.
The humidifier is mounted on the duct 22 simply and conveniently.
An aperture is cut into the sheet metal duct. The aperture is
slightly smaller than the aperture defined by the mounting flange
60. Six holes are drilled into the duct, which holes register with
the mounting apertures 64 in the flange. The tank mount 34 is then
positioned inside the duct, and the spring fingers 132 are pushed
through the holes in the duct. In order to mount the tank on the
duct, it is necessary only to push the spring fingers 132 into
their respective mounting apertures 64. To secure the humidifier,
wedges 138 are driven into the space between the fixed and free
arms of the respective spring fingers to drive the tank upward,
thereby compressing the gasket 62 between the mounting flange 60
and the duct. Since the gasket 62 is made of sponge material, it
accommodates any slight irregularities which may exist in the duct.
The resilience of the tank also allows the tank to accommodate
itself to most irregularities in the duct. The valve 124 is
connected to a convenient water supply, and the float 128 acts as a
regulator to keep the level of the water below the drive shaft
opening 52.
The drive motor 28 is connected to a convenient source of
electrical power to turn the drive shaft 30 and thereby rotate the
discs 100. As the discs 100 rotate, a portion of the discs rotate
through the water in the tank. As the screen discs pass through the
water, water adheres to the screen discs and the water is carried
on the discs into the air stream which flows in the plenum. The
holes 106 in the discs are aligned so that air may flow parallel to
the drive shaft through the discs. It is important to note that the
discs have a plurality of raw edges, that is, the outer periphery
of the discs has a raw edge; and the apertures in the discs also
have a raw edge which allows the water to be evaporated from the
edges of the discs in a greater quantity since there are numerous
raw edges on each disc. The discs have a large length of raw edge
on the periphery and a large amount of raw edge in the interior of
the disc. However, as the discs rotate, the water does not have a
tendency to run off the raw edges of the disc since the outer
periphery is a continuous edge; and the apertures in the discs are
closed figures so that the water can only run onto the main body of
each of the discs. Since the main body of the disc is a continuous
screen, the water is held in position on the disc; and the discs
operate as a highly efficient water carrier to carry water into the
air stream for evaporation. The window 42 allows an operator to
observe the operation of the discs to make certain that the discs
are rotating properly.
During the operation of the humidifier, an operator may observe the
condition of the water and the interior of the tank to determine
the amount of mineral build-up in the tank. As the water is
evaporated, the minerals in the water are left behind. The operator
may note the condition of the water by observing the water in the
transparent tube 144. By a periodic draining of the tank, a
substantial amount of the minerals which are suspended in the water
are removed from the tank to reduce the build-up of minerals. The
operator need only detach the T-hook 68 from its slot and lower the
transparent tube 144 to allow the water to drain from the tank into
a container or a sewer. Once the tank is drained, the hook is
replaced in its slot, holding the transparent tube at the proper
level. The tank is refilled automatically with clear water.
Periodic draining of the tank reduces the build-up of minerals on
the tank wall and the screen discs.
In order to give a thorough cleaning of the humidifier, the source
of water to the valve 124 is interrupted and the drive motor is
disconnected from its source of power. The tank 24 is drained in
the manner described above. Once the water is drained out of the
tank, the wedges 138 are removed, allowing the tank to be lowered.
If necessary, the drive housing may be readily removed from the
tank by squeezing together the prongs 78 and pushing the prongs
through their respective openings 54. The water carrier is removed
from the tank simply by lifting the bearing end 96 out of the slot
48, thus removing the discs from the tank. The minerals which
adhere to the tank 24 are removed simply by pushing in the walls
and bottom of the tank, which breaks up the minerals and releases
them from the tank since the polypropylene provides a soapy or
non-adhesive surface. The drive motor 28 is removed from the
container 70 and oiled for maintenance.
The humidifier is reassembled simply. Prongs 78 are placed into
openings 54 to secure the drive housing to the tank and the motor
is replaced in the housing. The water carrier is placed back into
the tank. The tank is again placed into engagement with the spring
fingers 132 as described above, and the wedges 138 are replaced to
remount the humidifier. The transparent tube is then resuspended by
the T-hook. The water and electrical connections are
re-established, and the humidifier is back in operation. Thus, the
humidifier may be quickly and conveniently serviced and put back
into operation with a minimum of difficulty.
The humidifier described above may be mounted on a vertical plenum
by use of a side adapter 200. Looking now to FIG. 11, which shows a
vertical plenum 202, the vertical plenum has an opening 204 cut
therein. A chassis 206 is mounted on the plenum. The chassis has a
pair of side bars 208, a bottom bar 210, and a top bar 212. A pair
of ears 214 is formed integral with the top bar 212 and extends
outwardly therefrom. The side adapter 200 includes a housing 216,
which has a top wall 218. A pair of side walls 220 is fixed to the
top wall, and one of the side walls has an aperture 222. A frame
224 is mounted in engagement with the side walls and the top wall.
A mounting frame 226 is connected to the side walls and the frame,
and connects the housing to the humidifier 20. The humidifier is
mounted on the housing 216 by sliding the flange into a pair of
grooves in the side wall 220.
The chassis 206 is attached to the plenum 202 by a plurality of
screws, and the housing is simply attached to the chassis by
positioning the ears 214 in a pair of apertures 228 in the housing.
The frame 224 is positioned between the end of the housing and the
aperture 228 so that when the housing is placed into position, the
housing is supported by the frame 224, which abuts the chassis 206.
The housing is held in position by the weight of the humidifier,
which is mounted on the housing. Air flows through the opening 204
into the housing and then out of the housing into the aperture 222
to a cold air return duct through associated duct work, none of
which is shown herein. The side adapter 200 may be easily removed
from the vertical plenum for cleaning by rotating the side adapter
about the ears and lifting the adapter and humidifier.
Another construction for mounting of the humidifier 20 is shown in
FIG. 12 wherein the humidifier is mounted on a circular duct 300.
The circular duct is slit to form a pair of flaps 302. The flaps
are opened to form an aperture in the duct. A pair of end walls 306
is mounted on the ends of the flaps. Corners 308 are positioned
between the end walls and the edges of the flaps to form a seal
therebetween. A mounting frame 310 is sealingly connected to the
flaps and the end walls, and the humidifier 20 is secured to the
mounting frame in the manner described above. The operation of the
humidifier is the same as that described above.
From the foregoing description, it is readily apparent that the
instant humidifier may be easily installed and maintained. It is
also important to note that the humidifier is simply constructed so
that it is economical to manufacture. Although a specific
embodiment of the present humidifier has been described in detail
above, it is readily apparent that those skilled in the art may
make various modifications and changes without departing from the
spirit and scope of the present invention. It is to be expressly
understood that the instant invention is limited only by the
appended claims.
* * * * *