U.S. patent application number 11/753944 was filed with the patent office on 2007-10-04 for air conditioning system with interior and exterior assemblies.
This patent application is currently assigned to DOMETIC ENVIRONMENTAL CORPORATION. Invention is credited to Kendall E. Allen, Ralph G. Bailey.
Application Number | 20070227693 11/753944 |
Document ID | / |
Family ID | 34922744 |
Filed Date | 2007-10-04 |
United States Patent
Application |
20070227693 |
Kind Code |
A1 |
Allen; Kendall E. ; et
al. |
October 4, 2007 |
AIR CONDITIONING SYSTEM WITH INTERIOR AND EXTERIOR ASSEMBLIES
Abstract
Vehicles are provided with a first air conditioning system
adapted to condition at least air in the driver compartment and a
second air conditioning system distinct from the first air
conditioning system and adapted to operate independently of the
first air conditioning system. The second air conditioning system
is adapted to condition at least air in the sleeper compartment and
includes an exterior assembly mounted to a location outside the
interior area and an interior assembly operably connected with the
exterior assembly and mounted within the interior area. The
exterior assembly includes an auxiliary condenser coil and an
auxiliary condenser fan and the interior assembly includes an
auxiliary evaporator coil, an auxiliary evaporator fan and an
auxiliary compressor.
Inventors: |
Allen; Kendall E.; (Ruther
Glen, VA) ; Bailey; Ralph G.; (Richmond, VA) |
Correspondence
Address: |
PEARNE & GORDON LLP
1801 EAST 9TH STREET
SUITE 1200
CLEVELAND
OH
44114-3108
US
|
Assignee: |
DOMETIC ENVIRONMENTAL
CORPORATION
2000 N. Andrews Avenue, Ext.
Pompano Beach
FL
33069-1497
|
Family ID: |
34922744 |
Appl. No.: |
11/753944 |
Filed: |
May 25, 2007 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
11411165 |
Apr 25, 2006 |
7234315 |
|
|
11753944 |
May 25, 2007 |
|
|
|
10927937 |
Aug 27, 2004 |
7171822 |
|
|
11411165 |
Apr 25, 2006 |
|
|
|
60551694 |
Mar 10, 2004 |
|
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Current U.S.
Class: |
165/43 |
Current CPC
Class: |
B60H 1/3226 20130101;
B60H 1/323 20130101; B60H 1/00378 20130101 |
Class at
Publication: |
165/043 |
International
Class: |
B61D 27/00 20060101
B61D027/00 |
Claims
1. A vehicle comprising: an interior area including a driver
compartment and a sleeper compartment; a first air conditioning
system adapted to condition at least air in the driver compartment;
the first air conditioning system comprising a compressor, a
condenser, and an evaporator; a ground-engaging wheel; a power
source adapted to power the first air conditioning system and the
ground-engaging wheel; and a second air conditioning system adapted
to condition at least air in the sleeper compartment, the second
air conditioning system further comprising an exterior assembly and
an interior assembly, the exterior assembly mounted to a location
outside the interior area, the interior assembly mounted within the
interior area and to be operably connected with the exterior
assembly, wherein the assemblies include a precharge of refrigerant
fluid, the precharged refrigerant fluid of the exterior assembly is
isolated from the precharged refrigerant fluid of the interior
assembly until subsequent operable connection of the exterior
assembly with the interior assembly.
2. The vehicle of claim 1, wherein the second air conditioning
system is distinct from the first air conditioning system and
adapted to operate independently of the first air conditioning
system.
3. The vehicle of claim 1, the exterior assembly comprising an
auxiliary condenser coil precharged with the refrigerant fluid and
an auxiliary condenser fan, and the interior assembly comprising an
auxiliary evaporator coil precharged with the refrigerant fluid, an
auxiliary evaporator fan and an auxiliary compressor.
4. The vehicle of claim 1, wherein the exterior assembly is mounted
so as to not increase a profile of the vehicle when viewed from the
front of the vehicle.
5. The vehicle of claim 4, wherein the exterior assembly is mounted
to a rear side of the interior area.
6. The vehicle of claim 1, wherein the interior assembly is mounted
in the sleeper compartment.
7. The vehicle of claim 6, wherein the interior assembly is mounted
so as to not substantially decrease interior room that a passenger
can occupy.
8. The vehicle of claim 7, wherein the interior assembly is mounted
underneath a bed in the sleeper compartment.
9. The vehicle of claim 3, wherein the auxiliary condenser coil is
mounted so as to be offset from a support surface adjacent to the
interior area to permit circulation of air between the auxiliary
condenser coil and the support surface.
10. The vehicle of claim 1, wherein the exterior assembly is
mounted underneath the interior area.
11. The vehicle of claim 1, wherein the second air conditioning
system is not powered by the power source.
12. The vehicle of claim 1, the exterior assembly further including
a quick connect inlet port and a quick connect outlet port, the
interior assembly further including a quick connect inlet port and
a quick connect outlet port; the vehicle further comprising first
and second quick connect lines for operably connecting the exterior
assembly and the interior assembly, the first quick connect line
for connection between the quick connect inlet port of the exterior
assembly and the quick connect outlet port of the interior
assembly, and the second quick connect line for connection between
the quick connect inlet port of the interior assembly and the quick
connect outlet port of the exterior assembly.
13. The vehicle of claim 12, wherein the quick connect inlet port
and the quick connect outlet port of the exterior assembly and the
quick connect inlet port and the quick connect outlet port of the
interior assembly are low loss quick connect ports, wherein the
first and second quick connect lines are low loss quick connect
lines, and wherein the low loss quick connect ports and the low
loss quick connect lines removably connect so that connection and
disconnection can take place multiple times with low loss of the
refrigerant fluid.
14. The vehicle of claim 1, wherein the driver compartment is at
least partially segregated from the sleeper compartment.
15. The vehicle of claim 14, wherein the driver compartment is
segregated from the sleeper compartment.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation application of
application Ser. No. 11/411,165, filed Apr. 25, 2006, which is a
divisional application of application Ser. No. 10/927,937, filed
Aug. 27, 2004, which claims the benefit of U.S. Provisional
Application No. 60/551,694, filed Mar. 10, 2004, the entire
disclosures of which are hereby incorporated herein by
reference.
FIELD OF THE INVENTION
[0002] The present invention is directed in general to an air
conditioning system, and is particularly directed to an air
conditioning system including an exterior assembly and an interior
assembly.
BACKGROUND OF THE INVENTION
[0003] Motor vehicles, such as a long distance or over the road
trucks may not be configured to readily provide heating,
ventilating, and air conditioning (HVAC) needs when parked.
Specifically, such vehicles may not provide for a desired air
handling, such as air conditioning, when the vehicles are not being
driven. For example, if the vehicle is parked and conditioned air
is desired, the engine of the vehicle, which drives the associated
engine driven air-conditioning unit, may need to be operated. This
results in air pollution, sound pollution, and engine wear
concerns. As such, there is some need to address issues concerning
air conditioning which is typically used when the vehicle is
stationary.
[0004] Reconfiguring a vehicle to include HVAC equipment may be
labor intensive and may require cutting, fitting, or other
modification of existing parts. Space constraints within the
vehicle may also be problematic.
SUMMARY OF THE INVENTION
[0005] In accordance with one aspect, the present invention
provides a vehicle comprising an interior area, a first air
conditioning system, a ground-engaging wheel, a power source, and a
second air conditioning system. The interior area includes a driver
compartment and a sleeper compartment. The first air conditioning
system is adapted to condition at least air in the driver
compartment and comprises a compressor, a condenser, and an
evaporator. The power source is adapted to power the first air
conditioning system and the ground-engaging wheel. The second air
conditioning system is adapted to condition at least air in the
sleeper compartment, and further comprises an exterior assembly and
an interior assembly. The exterior assembly is mounted to a
location outside the interior area, and the interior assembly is
mounted within the interior area and is to be operably connected
with the exterior assembly. The assemblies include a precharge of
refrigerant fluid, and the precharged refrigerant fluid of the
exterior assembly is isolated from the precharged refrigerant fluid
of the interior assembly until subsequent operable connection of
the exterior assembly with the interior assembly.
[0006] In accordance with another aspect, the second air
conditioning system is distinct from the first air conditioning
system and is adapted to operate independently of the first air
conditioning system.
[0007] In accordance with still another aspect, the vehicle of
claim 1, the exterior assembly comprises an auxiliary condenser
coil precharged with the refrigerant fluid and an auxiliary
condenser fan, and the interior assembly comprises an auxiliary
evaporator coil precharged with the refrigerant fluid, an auxiliary
evaporator fan and an auxiliary compressor.
[0008] In accordance with still another aspect, the exterior
assembly is mounted so as to not increase a profile of the vehicle
when viewed from the front of the vehicle.
[0009] In accordance with still another aspect, the exterior
assembly is mounted to a rear side of the interior area.
[0010] In accordance with still another aspect, the interior
assembly is mounted in the sleeper compartment.
[0011] In accordance with still another aspect, the interior
assembly is mounted so as to not substantially decrease interior
room that a passenger can occupy.
[0012] In accordance with still another aspect, the interior
assembly is mounted underneath a bed in the sleeper
compartment.
[0013] In accordance with still another aspect, the auxiliary
condenser coil is mounted so as to be offset from a support surface
adjacent to the interior area to permit circulation of air between
the auxiliary condenser coil and the support surface.
[0014] In accordance with still another aspect, the exterior
assembly is mounted underneath the interior area.
[0015] In accordance with still another aspect, the second air
conditioning system is not powered by the power source.
[0016] In accordance with still another aspect, the exterior
assembly further includes a quick connect inlet port and a quick
connect outlet port, and the interior assembly further includes a
quick connect inlet port and a quick connect outlet port. The
vehicle further comprises first and second quick connect lines for
operably connecting the exterior assembly and the interior
assembly, the first quick connect line for connection between the
quick connect inlet port of the exterior assembly and the quick
connect outlet port of the interior assembly, and the second quick
connect line for connection between the quick connect inlet port of
the interior assembly and the quick connect outlet port of the
exterior assembly.
[0017] In accordance with still another aspect, the quick connect
inlet port and the quick connect outlet port of the exterior
assembly and the quick connect inlet port and the quick connect
outlet port of the interior assembly are low loss quick connect
ports, the first and second quick connect lines are low loss quick
connect lines, and the low loss quick connect ports and the low
loss quick connect lines removably connect so that connection and
disconnection can take place multiple times with low loss of the
refrigerant fluid.
[0018] In accordance with still another aspect, the driver
compartment is at least partially segregated from the sleeper
compartment.
[0019] In accordance with still another aspect, the driver
compartment is permanently segregated from the sleeper
compartment.
BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The foregoing and other features and advantages of the
present invention will become apparent to those skilled in the art
to which the present invention relates upon reading the following
description with reference to the accompanying drawings, in
which:
[0021] FIG. 1 is an elevational view of a truck with portions
broken away to depict features of the present invention;
[0022] FIG. 2 is an elevational view of an exterior assembly in
accordance with exemplary embodiments of the present invention;
[0023] FIG. 3 is a perspective view of an interior assembly in
accordance with exemplary embodiments of the invention;
[0024] FIG. 4 is a schematic illustration of a second air
conditioning system in accordance with the present invention that
is distinct from a first air conditioning system; and
[0025] FIG. 5 is a schematic illustration of a wiring diagram of a
second air conditioning system of the present invention.
DETAILED DESCRIPTION OF EXAMPLE EMBODIMENTS
[0026] Certain terminology is used herein for convenience only and
is not to be taken as a limitation on the present invention.
Further, in the drawings, the same reference numerals are employed
for designating the same elements, and in order to clearly and
concisely illustrate the present invention, certain features may be
shown in somewhat schematic form.
[0027] FIG. 1 depicts a vehicle 10 with portions broken away to
depict features of an exemplary embodiment of the present
invention. The vehicle 10 includes interior compartments for
distinct air conditioning systems. As shown, the vehicle 10
includes an interior area 12 with a driver compartment 14 and a
sleeper compartment 16. In particular embodiments, the vehicle 10
might comprise a truck with a driver cab 13 including the driver
compartment 14 and a sleeper cab 15 including the sleeper
compartment 16. A wide range of vehicles, in addition to trucks,
might comprise driver and sleeper compartments. For example, a
vehicle might comprise a recreational vehicle wherein the driver
compartment comprises the front seat area of the recreational
vehicle and the sleeper compartment comprises a rear living area of
the recreational vehicle. Vehicles might also comprise an
automobile where the driver compartment comprises the front seat
area and the sleeper compartment comprises a rear seat or rear area
of the automobile. Other vehicles including a driver compartment
and one or more additional compartments might also incorporate
concepts of the present invention.
[0028] The vehicle 10 can include a first air conditioning system
that can comprise a wide variety of systems. As shown in FIGS. 1
and 4, the first air conditioning system 20 might include a
compressor 21, a condenser coil 27, a condenser fan 26, an
expansion valve 23, an evaporator coil 28 and an evaporator fan 29.
The first air conditioning system 20 is adapted to condition (i.e.,
heat and/or cool) air at least in the driver compartment 14 of the
vehicle. For example, the first air conditioning system 20 is
adapted to produce conditioned air 22 that is directed into the
driver compartment 14.
[0029] In certain embodiments, the driver compartment 14 is
segregated from the sleeper compartment 16. For example, the
compartments might be independent compartments that are permanently
segregated from one another, or might comprise compartments or
rooms that are selectively segregated from one another with a
closure, such as doors, drapes, or the like. In embodiments where
the driver compartment 14 is segregated from the sleeper
compartment 16, the first air conditioning system 20 might only or
substantially be adapted to condition air in the driver compartment
14. In other examples, the first air conditioning system 20 might
condition air in the sleeper compartment 16 in addition to the
driver compartment 14. For instance, in the absence of segregation
between the driver compartment 14 and sleeper compartment 16,
conditioned air 22 may diffuse into the sleeper compartment 16 or
there might be significant heat transfer between the sleeper
compartment 16 and driver compartment 14.
[0030] The vehicle further includes an engine adapted to power a
ground engaging wheel and the first air conditioning system. For
example, as apparent in partial schematic layout in FIG. 1, the
exemplary vehicle 10 includes front pair of ground engaging wheels
80 and a power source 82 adapted to power the first air
conditioning system 20 and the ground engaging wheels 80. While the
illustrated power source 82 is adapted to power a pair of ground
engaging wheels 80, the power source 82 might alternatively power a
single wheel or three or more wheels in further embodiments.
[0031] A power source 82, such as a combustion engine, electric
motor, or the like, can be used to power the ground engaging wheels
80 and can also simultaneously power the first air conditioning
system 20. In one example, a battery provides direct power to the
first air conditioning system 20 and the power source 82 recharges
the battery such that the power source 82 indirectly provides power
to the first air conditioning system 20. Fuel, such as electricity
or combustible fuel or the like may be used to operate the power
source 82. In a parked condition, the power source 82 is not needed
to power the ground engaging wheels 80 but must remain in operation
for continued operation of the first air conditioning system 20.
For example, the power source 82 may be needed to recharge a
battery providing direct power to the first air conditioning system
20. In certain applications, idle running of a power source when
the vehicle is parked can cause excessive wear and tear, require
undue fuel consumption, and/or present an environmental
concern.
[0032] In order to provide comfort in the sleeper compartment 16, a
second air conditioning system 30 is provided that does not
necessarily rely on the power source 82 for power. Accordingly, air
in the sleeper compartment 16 may be conditioned without running
the power source 82 used to power the ground engaging wheels
80.
[0033] As shown in schematic form in FIGS. 1 and 4, the second air
conditioning system 30 is distinct from the first air conditioning
system 20 in that the air conditioning systems can include separate
refrigeration circuits. Therefore, in exemplary embodiments, the
refrigeration circuit of the first air conditioning system 20 may
not be necessary to operate the second air conditioning system 30.
Providing distinct air conditioning systems simplifies retrofit of
existing vehicles to add a second air conditioning system for
conditioning air at least in a sleeper compartment of the
vehicle.
[0034] The second air conditioning system 30 is also adapted to
operate independently of the first air conditioning system 20.
Therefore, the second air conditioning system 30 can function
without any input or assistance from the first air conditioning
system 20. Accordingly, independent operation of the air
conditioning systems allows the second air conditioning system 30
to operate whether or not any part of the first air conditioning
system 20 is functioning. Independent operation provides advantages
because one air conditioning system can be used without operating
the other air conditioning system, thereby reducing power
consumption and wear of components.
[0035] As shown schematically in FIG. 1, the second air
conditioning system 30 is adapted to condition air at least in the
sleeper compartment 16. For example, the second air conditioning
system 30 includes conditioned air 52 that might be directed into
the sleeper compartment 16. In situations where a closure
segregates the driver compartment 14 from the sleeper compartment
16, the second air conditioning system 30 might only condition air
in the sleeper compartment 16. In other examples, the second air
conditioning system 30 might condition air in the driver
compartment 14 in addition to the sleeper compartment 16. For
example, in the absence of a closure, conditioned air 22 may
diffuse into the driver compartment 14 or might cause heat transfer
between the driver compartment 14 and sleeper compartment 16.
[0036] As further illustrated in FIG. 1, the second air
conditioning system 30 includes an exterior assembly 32 and an
interior assembly 50. The exterior assembly 32 can be mounted to a
location outside the interior area 12 of the vehicle 10. For
example, as shown in FIG. 1, the exterior assembly 32 can be
mounted to a rear side of the sleeper cab 15. Although not shown,
the exterior assembly 32 might be mounted to another side surface,
a top surface or a bottom surface of the sleeper cab 15 or might be
mounted at another location outside the interior area 12 of the
vehicle 10.
[0037] As shown in FIGS. 2 and 4, the exterior assembly 32
comprises an auxiliary condenser coil 36 and an auxiliary condenser
fan 34. The auxiliary condenser coil 36 may be positioned within an
interior area of a housing 38. A portion of the housing 38 is
broken away in FIG. 2 to illustrate the auxiliary condenser coil 36
located within the housing. One or more offset brackets 35 may be
provided mount the auxiliary condenser coil 36 and auxiliary
condenser fan 34 to a support surface 33 while offsetting the
auxiliary condenser coil 36 from the support surface 33. Offsetting
the auxiliary condenser coil 36 from the support surface 33
provides an offset space 39 that permits circulation of air between
the auxiliary condenser coil 36 and the support surface 33.
[0038] The interior area of a vehicle is often limited and it is
often desired to reduce components within the interior area to
enlarge the available space within the vehicle. Accordingly,
locating the auxiliary condenser coil 36 and the auxiliary
condenser fan 34 outside the interior area 12, reduces interior
area required to house the second air conditioning system.
Therefore, a second air conditioning system might be installed in
applications where the limited interior area available would
otherwise prohibit installation of a secondary air conditioning
system. Reducing the interior space requirements also frees
additional interior space for other vehicle components that might
not otherwise be installed due to excessive space requirements of a
second air conditioning system mounted entirely within the interior
area of the vehicle. Still further, a condenser fan can present a
significant noise concern for the driver and other vehicle
occupants. Therefore, locating the auxiliary condenser fan 34
outside the interior area 12 can significantly reduce the noise
pollution within the interior area 12 of the vehicle.
[0039] The interior assembly 50 can be mounted within driver
compartment 14 or the sleeper compartment 16 of the interior area
12 of the vehicle 10. In one particular embodiment, the interior
assembly 50 might be mounted underneath a bed located in the
sleeper compartment 16. A perspective view of an interior assembly
50 is shown in FIG. 3 and certain elements of the interior assembly
50 is shown in schematic form in FIG. 4. The interior assembly 50
includes an auxiliary compressor 76, an auxiliary evaporator coil
60 and an auxiliary evaporator fan 58. The evaporator fan 58 is
designed to draw air through an inlet 62 and disperse conditioned
air 52 through an outlet 64. An expansion device 37 such as an
expansion valve, expansion capillary tube or the like is also
provided. The expansion device 37 can be considered part of the
auxiliary evaporator coil 60.
[0040] In certain embodiments, it can also be beneficial to provide
the auxiliary evaporator coil 60, the auxiliary evaporator fan 58
and the compressor 76 as part of the interior assembly 50 to
prevent an oversized exterior assembly. Indeed, including the
evaporator coil 60, the evaporator fan 58 or the compressor 76 as
part of the exterior assembly may result in an oversized exterior
assembly that can not be incorporated in certain vehicle
applications. In order to apply the second air conditioning system
to a wide variety of vehicle applications, it can be important not
to oversize the exterior assembly. Oversized exterior assemblies
may present various installation obstacles and can increase air
resistance of the vehicle. For example, an oversized exterior
assembly may not fit underneath the lower wall of a sleeper cab 15.
Locating an oversized exterior assembly on the roof of the sleeper
cab 15 may increase the overall height of the truck above a maximum
regulated height and can increase the air resistance of the
vehicle. Moreover, it may not be possible to locate an oversized
exterior assembly behind the sleeper cab 15 due to interference
with other portions of the vehicle (e.g., a truck trailer).
[0041] The interior assembly 50 can further comprise an optional
heating element 66, such as an electric heater, to allow the second
air conditioning system 30 to provide heat without requiring waste
heat from the power source 82. As shown in FIG. 3, a compressor
housing 72 might be provided to protect the compressor and other
components of the interior assembly 50. An electric box 74 may also
be provided to house certain electrical components of the second
air conditioning system 30. The electric box 74 may be attached to
other components of the second air conditioning system 30, such as
the compressor housing 72. Alternatively, the electric box 74 might
be mounted at an alternative location away from other components of
the second air conditioning system 30. A schematic illustration of
a wiring diagram of components of the second air conditioning
system is illustrated in FIG. 5. As further shown in FIG. 3, the
interior assembly 50 can include a drip pan 68 with a drain 70 to
collect and appropriately dispense condensed water from the
evaporator coil 60.
[0042] In order to simplify installation, the interior and/or
exterior assembly can comprise low loss quick connect inlet and
outlet ports. A low loss quick connect port can comprise any joint,
fitting or portion thereof that facilitates fluid connection and/or
disconnection between two conduits without significant leakage of
fluid to and/or from the conduits during the connection and/or
disconnection process. As shown in FIG. 4, the exterior assembly 32
can comprise a first low loss quick connect inlet port 40a and a
first low loss quick connect outlet port 40b. Similarly, the
interior assembly 50 can comprise a second low loss quick connect
inlet port 41a and a second low loss quick connect outlet port
41b.
[0043] A low loss quick connect line can also be used to operably
connect the exterior assembly to the interior assembly. A low loss
quick connect line can comprise any conduit adapted to connect with
at least two fluid ports without significant leakage of fluid
during connection and/or disconnection of the low loss quick
connect line with the ports. For example, the second air
conditioning system 30 can include a first low loss quick connect
line 56a and a second low loss quick connect line 56b to operably
connect the exterior assembly 32 to the interior assembly 50. The
first low loss quick connect line 56a can operably connect the
first low loss quick connect inlet port 40a of the exterior
assembly 32 with the second low loss quick connect outlet port 41b
of the interior assembly 50. Similarly, the second low loss quick
connect line 56b can operably connect the second low loss quick
connect inlet port 41a of the interior assembly 50 with the first
low loss quick connect outlet port 40b of the exterior assembly
32.
[0044] In further embodiments, the first low loss quick connect
line 56a and the second low loss quick connect line 56b can
comprise a single overall line, the exterior assembly can comprise
an overall port including both the low loss quick connect inlet and
outlet ports of the exterior assembly, and the interior assembly
can comprise an overall port including both the low loss quick
connect inlet and outlet ports of the interior assembly. In one
particular exemplary embodiment, the single overall line can
comprise a coaxial line with the first low loss quick connect line
being coaxially aligned with the second quick connect line.
Providing a single overall line may simplify operable connection of
the interior assembly and the exterior assembly while minimizing
the chance of potential refrigerant fluid loss. Indeed, a single
overall line would only involve two connection steps, rather than
four connection steps in applications where the first and second
low loss quick connect lines are separate from one another.
[0045] Installation of the second air conditioning system 30 may be
further simplified by providing the exterior and interior assembly
as a kit with respective condenser and evaporator coils including
precharged refrigerant fluid. Precharging the coils with
refrigerant fluid reduces installation time and possible
environmental spills during installation procedures. Prior to
installation, the second air conditioning system may also be tested
and optimized without requiring discharge of refrigerant material
that might otherwise be necessary in applications that do not
include precharged coils. Discharge of refrigerant material also
requires additional preparation time and increases the likelihood
of inadvertent leakage to the environment.
[0046] An exemplary method of preparing an exemplary air
conditioning kit will now be described. An exterior assembly 32 is
provided with a condenser fan 34 and a condenser coil 36. An
interior assembly 50 is also provided with an evaporator fan 58, a
compressor 76 and an evaporator coil 60. The condenser coil 36 and
the evaporator coil 60 can then be independently or simultaneously
charged with refrigerant fluid prior to operable connections of the
interior and exterior assemblies. Alternatively, the exterior
assembly 32 may be operably connected to the interior assembly 50
prior to charging the system with refrigerant fluid. Once operably
connected, the evaporator coil 60 and the condenser coil 36 may be
simultaneously charged with a single charging step. If desired, the
second air conditioning system 30 may then be tested and optimized
to obtain the desired specifications. The exterior assembly 32 and
the interior assembly 50 may then be disconnected from one another
while the respective condenser coil 36 and evaporator coil 60
remains charged. The use of low loss quick connect inlet and outlet
ports and low loss quick connect lines may also further simplify
providing a kit with precharged condenser and evaporator coils such
that the precharged refrigerant fluid of the condenser coil is
isolated from the precharged refrigerant fluid of the evaporator
coil until subsequent operable connection of the exterior assembly
with the interior assembly during installation procedures.
[0047] From the above description of the invention, those skilled
in the art will perceive improvements, changes and modifications.
Such improvements, changes and modifications within the skill of
the art are intended to be covered by the appended claims.
* * * * *