U.S. patent application number 10/855006 was filed with the patent office on 2005-08-25 for microprocessor controlled evaporative cooler.
Invention is credited to Marquez, Jess, McMillan, Robert B..
Application Number | 20050183430 10/855006 |
Document ID | / |
Family ID | 34862167 |
Filed Date | 2005-08-25 |
United States Patent
Application |
20050183430 |
Kind Code |
A1 |
McMillan, Robert B. ; et
al. |
August 25, 2005 |
Microprocessor controlled evaporative cooler
Abstract
An air cooling apparatus comprised of an injector cabinet fitted
with a plurality electric solenoid operated injector valves, or
standard nozzles which are controlled by an advanced computerized
system which regulates the amount of moisture added to the air
stream by activating the injectors based on direct measurement of
indoor and outdoor dry bulb and wet bulb temperatures, mass flow
through the apparatus and the thermostat setting. This water
injection module may be located either upstream or downstream of
any air-moving device. The device is also adaptable for use with
existing coolers as a retrofit kit.
Inventors: |
McMillan, Robert B.; (El
Paso, TX) ; Marquez, Jess; (Canutillo, TX) |
Correspondence
Address: |
ROBERT B. McMILLAN
337 LA MIRADA
EL PASO
TX
79932
US
|
Family ID: |
34862167 |
Appl. No.: |
10/855006 |
Filed: |
June 24, 2003 |
Current U.S.
Class: |
62/171 ;
62/304 |
Current CPC
Class: |
Y02B 30/545 20130101;
Y02B 30/54 20130101; F24F 6/14 20130101; F24F 11/0008 20130101;
F24F 5/0035 20130101 |
Class at
Publication: |
062/171 ;
062/304 |
International
Class: |
F28D 003/00; F28D
005/00 |
Claims
Having thus fully described our invention, what we claim as new and
novel; and desire to secure by Letters of Patent is:
1. An apparatus for cooling air by means of the latent heat of
evaporation of water comprised of a cabinet containing a new and
novel plurality of electric solenoid operated injectors, or
standard nozzles whose injection rate is controlled by a
microprocessor that senses mass flow, inside and ambient wet and
dry bulb temperatures and the set temperature of the thermostat,
determines the relative humidity of the ambient and inside air and
properly adjusts the amount of water injected into the inlet air
stream as well as optionally controlling the speed of the air
moving device.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] Not Applicable.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
[0002] Not Applicable.
REFERENCE TO A "MICROFICHE APPENDIX." (SEE 37 CFR 1.96 (c)).
[0003] Not Applicable.
BACKGROUND OF THE INVENTION
[0004] The present invention relates to air-cooling and
particularly to evaporative air conditioning, in which the air is
cooled through the latent heat of evaporation of water. This
invention provides for precise control of the evaporated water,
which allows precise control of the outlet temperature and utilizes
only the required amount of water to achieve the set temperature,
thus conserving water.
BRIEF SUMMARY OF THE INVENTION
[0005] The principal object of the invention is to provide an
apparatus for evaporative air conditioning in which exact control
of the outlet temperature and the cooling efficiency is increased
through enhanced control of the amount of water added to the inlet
air stream, and to eliminate the use of a water reservoir, wetted
pads, circulation pump, float valve and the necessity of bleeding
water.
[0006] The invention is carried out by temperature sensors
measuring the wet and dry bulb temperatures of the ambient air,
which signals received by the microprocessor which calculates the
amount of moisture contained in the ambient air. A second pair of
temperature sensors measure the wet and dry bulb temperatures of
the area to be cooled, feeding their signals to the microprocessor
which calculates the amount of moisture in the interior air. These
values along with a signal from a mass flow sensor are compared in
the microprocessor which determines the amount of moisture to be
added to the inlet air stream for optimum cooling. The speed of the
air moving device and the amount of moisture to be added to the
inlet air may also controlled by the microprocessor based on the
set temperature of the thermostat. The moisture is added to the air
stream by electrically operated solenoid injector valves, or
control of a water pump, that cycle based on signals from the
microprocessor.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING
[0007] The object and attendants advantages of this invention will
become readily apparent to anyone familiar with the field of the
invention following the detailed description taken in conjunction
with the accompanying drawing in which:
[0008] FIG. 1 is a diagram of the control system.
[0009] FIG. 2 is a cross-sectional view of the injector section and
control sensor locations.
DETAILED DESCRIPTION OF THE INVENTION
[0010] In the exemplary embodiment of the invention a substantially
cubic or cylindrical injector nozzle cabinet 10 is fitted with a
water manifold 12, which is provided with a plurality of electric
solenoid injector valves, or other nozzles 11, which receive water
from a filtration system 13 which is fed from a domestic water
source 14.
[0011] The ambient air wet bulb temperature is measured by a sensor
1, and the ambient dry bulb temperature is measured by a sensor 2.
As an alternative, a humidity sensor can replace devices 1 and 2.
These signals are fed to a microprocessor 7, which calculates the
ambient relative humidity and the grains of moisture per pound of
ambient air. The inside wet bulb temperature is measured by a
sensor 3, and the indoor dry bulb temperature is measured by a
sensor 4. These signals are fed to a microprocessor 7, which
calculates the indoor relative humidity and the grains of moisture
per pound of air. The amount of inlet air is measured by the mass
flow sensor 6, which sends a signal to the microprocessor 7, which
in turn calculates the amount of moisture to add to the ambient air
stream and the dwell time for the water injectors 8, and may
further control the speed of the air moving device 9.
* * * * *