AU2002248465A1 - Drying assembly and method of drying for a flooded enclosed space - Google Patents

Description

DRYING ASSEMBLY AND METHOD OF DRYING FOR A FLOODED ENCLOSED SPACE

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to drying assemblies, and in

particular, to a portable drying assembly for drying out

businesses and residences that have been subjected to flooding.

2. Description of the Prior Art

Residences and businesses are oftentimes subjected to

flooding, sometimes of a natural occurrence and sometimes the

result of a broken water pipe. The water so introduced into the residence or business permeates everything which it contacts up

to the level of the flood water and additionally generates a

relatively high humidity within the residence or business which can affect walls and ceilings significantly higher than the flood line.

The only recourse in such a situation was to strip off and

discard the affected floor coverings, remove the damaged furniture, and dismantle the damaged wall coverings and ceilings.

Then portable dryers would be positioned in the affected area to

circulate air in an effort to dry out the water soaked floor

boards, wall studs and ceiling joists. These drying units were

relatively small and capable of being transported by hand and positioned at various locations within the residence or business .

While these devices did affect the drying out of the flooded area,, they did not do so efficiently or efficaciously. In fact,

they took significant time to effectuate the drying process and in doing so allowed for mold to form on the interior framing of

the residence or business. If this mold was not noticed and not

removed, it would be covered up when the interior walls were re-

sheet rocked and then such mold would then present a health

hazard once the residence or business was reinhabited.

Therefore there was a need for a drying unit which could dry

out a damaged residence or business more efficaciously and more

quickly. Applicant's novel drying unit addresses and solves this

problem. There is still the necessity to remove water soaked

floor coverings, furniture and sheetrock, however, Applicant's unit supplies extremely dry, hot air in sufficient volumetric

quantity to dry a comparable residence or business in

approximately 10% of the time, thereby preventing the growth of

mold and further permitting the inhabitant of the residence or

business earlier access to the premises to effect repairs and redecorating.

OBJECTS OF THE INVENTION

An object of the present invention is to provide for a novel

drying assembly to dry out a residence or business subjected to

flooding wherein the drying assembly introduces heated, ambient, low humidity air into the dwelling unit and removes moisture

laden air from the flooded unit.

. Another object of the present invention is to provide a

novel drying assembly for drying a residence or business subjected to flooding in which the moisture laden air is utilized

to preheat the ambient air in a heat exchanger prior to its

introduction to the residence or business.

Another object of the present invention is to provide a

novel drying assembly for the drying of a residence or business

subjected to flooding in which preheated low humidity ambient air

is introduced into the residence or business in sufficient volume

to prevent the growth of mold.

A still further object of the present invention is to

provide for a novel drying assembly which is portable and self-

contained on its own trailer and can travel to a flooded

residence or business and be positioned externally from the

flooded area . SUMMARY OF THE INVENTION

A portable, trailer mounted drying assembly for the drying

of a residence or business which has been subjected to flooding, the drying assembly having an inlet path for the introduction of

ambient air into the residence or business, the drying assembly

further having an outlet path for the evacuation of moisture

laden air from the residence or business, each path having associated therewith a variable speed blower to insure the

desired volumetric capacity regardless of the lengths of the

paths, the inlet path and the outlet path both passing through a common preheat exchanger wherein the moisture laden air

preheats the ambient air, the preheated ambient air being further

subjected to heating in a heater, the heater being in

communication with a fuel source, the conduits extending from

said heater into said residence or business, and the conduit

extending from the residence or business back to the preheat

exchanger for moisture laden air, both being flexible conduits

of a sufficient diameter to achieve the desired volumetric flow

rate. BRIEF DESCRIPTION OF THE DRAWINGS

These and other objects of the present invention will become

evident particularly when taken in light of the following

illustrations wherein:

Figure 1 is a schematic diagram of the drying assembly of

the present invention;

Figure 2 is a top planar view of the drying assembly with

the portable trailer roof removed and a residence having been

subjected to flooding with its roof removed. DETAILED DESCRIPTION OF THE DRAWINGS

Figure 1 is a schematic drawing of the drying assembly 10.

The drying assembly 10 is comprised of several essential elements, the first being a plate heat exchanger 12 which

preheats the ambient air as more fully described hereafter.

There is • also included a first variable speed blower 14 in the

inlet path and a second variable speed blower 16 in the outlet

path. The inlet path also includes a heater 18. Heater 18 is

in communication with a fuel source 20.

In the preferred embodiment as will be illustrated in Figure

2 , these elements would be mounted on an enclosed trailer

providing portability of the assembly and its ability to

proximate itself to the residence or business which has been

subjected to flooding. At steady state operation with heater 18

at the desired temperature and both variable speed motors 14 and

16 operational, ambient air would be drawn in via conduit 22 and inlet port and introduced into flat plate heat exchanger 12 where

it would pass through discrete passageways. Moisture laden air

drawn from the residence or business 19, via conduit 24 by means

of variable speed blower 16 would be introduced into a flat plate

heat exchange 12 in counterflow to the ambient air through

separate discrete passageways. The moisture laden air from the

residence or business would serve to preheat the ambient air in

flat plate exchange 12 prior to the moisture laden air being

evacuated to the atmosphere via conduit 26 through outlet port

27. The preheated ambient air is then communicated via variable

speed blower 14 to heater 18 where its temperature is increased to approximately 125 degrees Fahrenheit at which time it is then

introduced into the residence or business 19 having been

subjected to flooding by means of conduit 28 at the approximate

rate of 2,000 cubic feet per minute. The fuel source 20 for the

heater 18 is preferably a plurality of propane tanks which would

be mounted exteriorly to the trailer.

One of the advantages of the design of this assembly is that

the ambient air drawn into the assembly can be ambient air of any

meteorological condition since its subjection to a preheater and

heater results in an air flow introduced into the residence or

business which is of extremely low humidity and at a temperature of approximately 125 degrees . The volumetric amount of flow

results in extremely fast drying and the development of a high humidity evacuation flow stream.

In the present operation, the furnace or heating unit 18 is

rated at 175,000 btu. The variable speed blowers are rated at

2,000 cubic feet per minute. The heat exchanger is also rated

for 2,000 cubic feet per minute and has 1,500 square feet of heat exchange surface with the plates being spaced .25 inches apart.

Inlet conduit 28 and return conduit 24 having been utilized with

lengths of up to 300 feet and still have achieved the optimum drying .

As an example of steady state operation, the unit was

operating on a residence when the ambient temperature was 30° F. The moisture laden air being returned from the building was 85°

F and the temperature of the inlet air after passing through the

heat, exchanger was raised from 30° F to 79° F. It was then

heated with the furnace to a temperature of 125° F and introduced

into the residence with a relative humidity of less than 5%.

The conduits 28 and 24 as illustrated in Figure 2 can be

introduced into the space to be dried via a door or window with

the remainder of the window or door opening taped over to insure

a sealing affect within. The ends 32 and 34 of conduits 24 and

28 may be positioned within the residence or business in accordance with where the most serious flooding took place.

Additionally, fans 36 may be positioned within the residence or

business to help circulate the heated incoming air.

Conduits 24 and 28 are preferably a reinforced, flexible

conduit and a diameter of 14 inches has been found suitable to

achieve the desired flow rate. They can be snaked about the room

layouts of the residence or business and can from time to time

be repositioned. The same holds true for the circulating fans

36. In the design, all the conduit connections within the

trailer 30 would be fixed sheet metal connections. Preferably

conduits 24 and 28 would be engaged and secured about the return

port 40 and outlet port 42 respectively. Figure 3 is a side view

of the trailer further illustrating one possible layout of these

ports. Further, the layout of the interior of the trailer is designed such that conduits 24 and 28 may be stored therein when

the trailer 30 is traveling from site to site.

. The design of the assembly and its portability allows it to

be positioned proximate the flooded building and to operate at steady state unattended with the exception of insuring an

adequate supply of fuel to the furnace .

While the present invention has been described with respect

to the exemplary embodiments thereof, it will be recognized by those of ordinary skill in the art that many modifications and

changes can be made without departing from the spirit and scope

of the invention. Therefore it is manifestly intended that the

invention be limited only be the claims and the equivalence thereof .

Claims (9)

I claim:

1. A portable assembly for drying an enclosed space comprising:

an energy exchange unit, said energy exchange unit

having, an ambient air inlet for the introduction of

ambient air;

an exhaust air inlet for the introduction of

moisture laden exhaust air from an enclosed space, said moisture

laden exhaust air having thermal energy;

a heat exchanger accepting said ambient air from

said ambient air inlet and said moisture laden exhaust air from

said exhaust air inlet, said heat exchanger having a plurality

of first discrete channels for the passage of said ambient air

and a plurality of second discrete channels in alternating arrangement with said first discrete channels for the passage of

said moisture laden exhaust air in counterflow to said ambient

air, thereby preheating said ambient air, said heat exchanger having an exhaust air outlet for venting said moisture laden air

to the atmosphere and an ambient air outlet;

a furnace means for further heating said ambient air;

fuel source for said furnace;

conduit means for directing said heated ambient air to

said enclosed space; a first propulsion means for transporting said ambient

air from said ambient air inlet to said enclosed space;

. conduit means directing said exhaust air to said

atmosphere; and a second propulsion means for transporting said exhaust

air from said enclosed space to said atmosphere.

2. The portable assembly for drying an enclosed space in

accordance with Claim 1 wherein said energy exchange unit, said

furnace means, said propulsion means, and said fuel source means

are mounted on a portable trailer.

3. The portable assembly for drying an enclosed space in

accordance with Claim 1 wherein said heat exchanger is a flat

plate heat exchanger.

4. The portable assembly for drying an enclosed space in

accordance with Claim 3 wherein said flat plate heat exchanger

has the capacity of 2,000 cubic feet per minute.

5. The portable assembly for drying an enclosed space in

accordance with Claim 1 wherein said first propulsion means and

said second propulsion means comprise variable speed blowers.

6. The portable assembly for drying an enclosed space in

accordance with Claim 1 wherein said conduit means for directed

said heated ambient air to said enclosed space comprises flexible

reinforced tubing.

7. The portable assembly for drying an enclosed space in accordance with Claim 6 wherein said flexible reinforced tubing

is of a diameter of at least 3 feet.

,

8. -The portable assembly for drying an enclosed space in

accordance with Claim 1 wherein said furnace means has a rated

capacity sufficient to heat said ambient air to a temperature of

125° F.

9. A method of drying an enclosed space which has been

subjected to flooding, said method comprising: mounting an energy exchange unit on a trailer, said

energy exchange unit having an ambient air inlet and an exhaust

air inlet, a heat exchanger having a plurality of first discrete channels and a plurality of second discrete channels in

alternating arrangement with said first discrete channels and

exhaust air outlet and an ambient air outlet; mounting a furnace means on said trailer in

communication with said heat exchanger;

mounting a fuel source on said trailer in communication with said furnace;

mounting a first propulsion means and a second

propulsion means on said trailer in communication with said heat exchanger;

positioning said trailer proximate said enclosed space;

providing conduit means from said furnace means to said

enclosed space; providing conduit means from said enclosed space to

said energy exchange unit ;

• activating said first propulsion means and said second

propulsion means;

activating said furnace means;

introducing said ambient air into said heat exchanger

through said first discrete channels,-

introducing said exhaust air into said heat exchanger

through said second discrete channels; preheating said ambient air with said exhaust air in said heat exchanger;

venting said exhaust air to said atmosphere;

introducing said preheated ambient air to said furnace; heating said preheated ambient air and introducing same

into said enclosed space.