U.S. patent application number 13/454438 was filed with the patent office on 2013-10-24 for non idle air condition system.
The applicant listed for this patent is Barbara RUHLAND-LINDNER. Invention is credited to Nicholas Joseph ANTONUCCI, Bjoern Gerd LINDNER, Steven Joseph SCHURIG.
Application Number | 20130276470 13/454438 |
Document ID | / |
Family ID | 49378837 |
Filed Date | 2013-10-24 |
United States Patent
Application |
20130276470 |
Kind Code |
A1 |
LINDNER; Bjoern Gerd ; et
al. |
October 24, 2013 |
NON IDLE AIR CONDITION SYSTEM
Abstract
A non idle air condition system, especially for a vehicle, is
provided that includes a blower, a main evaporator, an auxiliary
evaporator for a non idle mode and a heater core. The non idle air
condition system needs less space by a high airflow performance,
and uses the same condensate drains by the main evaporator and the
auxiliary evaporator.
Inventors: |
LINDNER; Bjoern Gerd;
(Schiltach, DE) ; ANTONUCCI; Nicholas Joseph;
(Romeo, MI) ; SCHURIG; Steven Joseph; (Flint,
MI) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
RUHLAND-LINDNER; Barbara |
|
|
US |
|
|
Family ID: |
49378837 |
Appl. No.: |
13/454438 |
Filed: |
April 24, 2012 |
Current U.S.
Class: |
62/276 |
Current CPC
Class: |
B60H 1/00542
20130101 |
Class at
Publication: |
62/276 |
International
Class: |
F25B 39/02 20060101
F25B039/02; F25D 21/14 20060101 F25D021/14 |
Claims
1. A non idle air condition system for a vehicle, the system
comprising: a blower; a main evaporator; an auxiliary evaporator
for a non idle mode; and a heater core, wherein the same condensate
drains are used by the main evaporator and the auxiliary
evaporator.
2. The non idle air condition system according to claim 1, wherein
the main evaporator and the auxiliary evaporator are assembled face
to face with a direct touching between the main evaporator and the
auxiliary evaporator.
3. The non idle air condition system according to claim 2, wherein
the main evaporator is mounted in a correct airflow direction while
the auxiliary evaporator is mounted in an incorrect airflow
direction.
4. The non idle air condition system according to claim 1, wherein
the main evaporator and the auxiliary evaporator are integrated in
one heat exchanger.
5. The non idle air condition system according to claim 4, wherein
the refrigerant loop of the main evaporator and the refrigerant
loop of the auxiliary evaporator are combined in the heat
exchanger.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The invention refers to a non idle air condition system. The
non idle air condition system, especially for a vehicle, comprises
a blower, a main evaporator, an auxiliary evaporator for a non idle
mode and a heater core.
[0003] 2. Description of the Background Art
[0004] Especially commercial trucks use non idle air condition
system having a conventional refrigeration system driven by a
combustion engine and one refrigeration system operated by an
electric compressor for cooling the cabin by stopped combustion
engine. Every refrigeration system requires other oil for its
refrigeration loop. Consequently, two evaporators are needed.
[0005] Conventional HVAC modules are shown in FIG. 3 and FIG. 4. A
first non idle air condition system 9 of FIG. 3 shows a blower 10,
a main evaporator 11, an auxiliary evaporator 12 and a heater core
13. The main evaporator 11 is driven by the combustion engine while
the auxiliary evaporator is operated by an electric compressor.
Main evaporator 11 and auxiliary evaporator 12 are placed at
different locations in the non idle air condition system 9. Every
evaporator 11, 12 needs a separate condensate drains. For this
arrangement a lot of space is necessary for the air condition
system.
[0006] FIG. 2 depicts a second embodiment of a conventional non
idle air condition system 14 where the main evaporator 15 and the
auxiliary evaporator 16 are arranged in series because the
auxiliary evaporator 16 is smaller as the main evaporator 15. Even
if the auxiliary evaporator 15 requires not as much air
conditioning performance as the main evaporator 15 two separate
condensate drains are necessary. Furthermore, pressure drop
increases extremely wherefore the airflow is less and a higher
noise level is generated.
SUMMARY OF THE INVENTION
[0007] The problem addressed in this invention is to indicate a non
idle air condition system, which needs less space by a high airflow
performance.
[0008] Therefore, in an embodiment of the present invention, the
same condensate drains can be used by the main evaporator and the
auxiliary evaporator. Application of only one condensate drains for
both the main evaporator and the auxiliary evaporator demands to
bring the evaporators closely together for which reason space is
reduced in the air condition system. Furthermore, airflow
performance reduction is minimized and costs are decreased because
of economy of one condensate drains.
[0009] In another aspect of invention, the main evaporator and the
auxiliary evaporator are assembled face to face with a direct
touching between the main evaporator and the auxiliary evaporator.
Hence, the space for the HVAC module is reduced more.
[0010] In addition, the main evaporator can be mounted in a correct
airflow direction while the auxiliary evaporator is mounted in an
incorrect airflow direction. The advantage of this arrangement is
in a better airflow and a reduced noise level because the pressure
drop only minor increases.
[0011] Furthermore, the main evaporator and the auxiliary
evaporator can be integrated in one heat exchanger. By equal
dimensions of the main evaporator and the auxiliary evaporator a
compact unit is created which handling during the assembling
process is simplified.
[0012] In another aspect of the invention, the refrigerant loop of
the main evaporator and the refrigerant loop of the auxiliary
evaporator can be combined in the heat exchanger. This could be
achieved by sizing the individual circuits according to performance
requirements. Because of this embodiment retrofit capability of the
only one heat exchanger is improved.
[0013] Further scope of applicability of the present invention will
become apparent from the detailed description given hereinafter.
However, it should be understood that the detailed description and
specific examples, while indicating preferred embodiments of the
invention, are given by way of illustration only, since various
changes and modifications within the spirit and scope of the
invention will become apparent to those skilled in the art from
this detailed description.
BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The present invention will become more fully understood from
the detailed description given hereinbelow and the accompanying
drawings which are given by way of illustration only, and thus, are
not limitive of the present invention, and wherein:
[0015] FIG. 1 illustrates a first embodiment of non idle air
condition system according to the invention,
[0016] FIG. 2 illustrates a further embodiment of non idle air
condition system according to the invention,
[0017] FIG. 3 illustrates a first embodiment of non idle air
condition system according to the conventional art,
[0018] FIG. 4 illustrates a second embodiment of non idle air
condition system according to the conventional art.
DETAILED DESCRIPTION
[0019] FIG. 1 shows a first embodiment of non idle air condition
system according to the invention. The non idle air condition
system 1 has a blower 2. The blower 2 absorbs air from the outside
and leads the air to a main evaporator 3 or an auxiliary evaporator
4. The auxiliary evaporator 4 is positioned face to face on the
main evaporator 3. The sizes of both the main evaporator 3 and the
auxiliary evaporator 4 are equal. It is not necessary, that the
auxiliary evaporator 4 requires the same air conditioning
performance as the main evaporator 3. Considering the tubes 6 the
main evaporator 3 is mounted in correct airflow direction.
Contrary, the auxiliary evaporator 4 is mounted in incorrect
airflow direction with a minor loss in performance. Both
evaporators 3, 4 lead the air from the blower to the same heater
core 5 during heating mode. Because the main evaporator 3 is driven
by a combustion engine it is used if the vehicle is travelling. Is
the combustion engine stopped and the vehicle parked the auxiliary
evaporator 4 is used for cooling the cabin.
[0020] Another embodiment of the invention is depicted in FIG. 2.
The non idle air condition system 7 comprises a main evaporator 3
and an auxiliary evaporator 4 which are integrated in one heat
exchanger 8. The both refrigerant loops of the main evaporator 3
and the auxiliary evaporator 4 are combined in the one heat
exchanger 8. This could be achieved by sizing the individual
refrigerant loops according to performance requirements.
[0021] Both discussed embodiments of the invention have the
advantage that only one condensate drains is required for the main
evaporator 3 and the auxiliary evaporator 4. An only minor increase
of pressure drop allows a better airflow and a reduced noise level.
Both systems are retrofit.
[0022] The invention being thus described, it will be obvious that
the same may be varied in many ways. Such variations are not to be
regarded as a departure from the spirit and scope of the invention,
and all such modifications as would be obvious to one skilled in
the art are to be included within the scope of the following
claims.
* * * * *