U.S. patent application number 14/033006 was filed with the patent office on 2014-04-03 for cooling system for a motor vehicle or for a stationary internal combustion engine.
This patent application is currently assigned to Voith Patent GmbH. The applicant listed for this patent is Voith Patent GmbH. Invention is credited to Jurgen Dossner, Roland Schmid.
Application Number | 20140090800 14/033006 |
Document ID | / |
Family ID | 49290385 |
Filed Date | 2014-04-03 |
United States Patent
Application |
20140090800 |
Kind Code |
A1 |
Dossner; Jurgen ; et
al. |
April 3, 2014 |
COOLING SYSTEM FOR A MOTOR VEHICLE OR FOR A STATIONARY INTERNAL
COMBUSTION ENGINE
Abstract
A cooling system for a motor vehicle or for an internal
combustion engine includes: at least one heat exchanger, having an
inlet and an outlet for a medium to be cooled and an inlet and an
outlet for coolant air; at least one fan connected upstream of the
heat exchanger; and a connection channel, which is arranged between
the fan and heat exchanger, for conveying coolant air to the heat
exchanger. A branch line is connected to the connection line or
between the individual heat exchangers and removes a partial flow
of the coolant air therefrom. The combustion air supplied to the
engine is filtered. A Venturi nozzle is connected in the branch
line and a suction line is connected to a constriction of the
Venturi nozzle and suctions out the filtered particles of the air
filter.
Inventors: |
Dossner; Jurgen; (Bachhagel,
DE) ; Schmid; Roland; (Konigsbronn, DE) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Voith Patent GmbH |
Heidenheim |
|
DE |
|
|
Assignee: |
Voith Patent GmbH
Heidenheim
DE
|
Family ID: |
49290385 |
Appl. No.: |
14/033006 |
Filed: |
September 20, 2013 |
Current U.S.
Class: |
165/41 |
Current CPC
Class: |
F01P 11/10 20130101;
F01P 3/20 20130101; F02M 35/06 20130101; F01P 1/06 20130101; F02M
35/086 20130101 |
Class at
Publication: |
165/41 |
International
Class: |
F01P 1/06 20060101
F01P001/06 |
Foreign Application Data
Date |
Code |
Application Number |
Sep 20, 2012 |
DE |
10 2012 018 571.5 |
Claims
1. A cooling system for a motor vehicle or an internal combustion
engine, the cooling system comprising: at least one heat exchanger
having an inlet and an outlet for a medium to be cooled and and
inlet and an outlet for a stream of coolant air; at least one fan
upstream of said at least one heat exchanger; a connection channel
for conveying pressurized coolant air to said at least one heat
exchanger, said connection channel being arranged between said fan
and said at least one heat exchanger; a branch line taking a
partial flow of said coolant air from and connected to said
connection channel or between individual said heat exchangers if
said at least one heat exchanger is a plurality of heat exchangers;
a plurality of filters connected upstream from the internal
combustion engine or an engine of the motor vehicle, for filtration
of a combustion air; a Venturi nozzle connected to said branch line
and having a constriction; and a suction line connected to a
constriction of said Venturi nozzle, for suctioning out a plurality
of filtered particles of said air filters.
2. The cooling system according to claim 1, wherein said at least
one heat exchanger is at least two heat exchangers connected in
series and said branch line is arranged between said two adjacent
of said at least two heat exchangers.
3. The cooling system according to claim 2, further comprising a
shutoff element assigned to one of said branch line and said
suction line.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to a cooling system for a
motor vehicle, for example, a road vehicle or a rail vehicle. In
the present case, it relates to a tractor having a diesel engine.
The present invention also relates to stationary internal
combustion engines.
[0003] 2. Description of the Related Art
[0004] DE 43 05 237 A1 describes a cooling system for a
water-cooled internal combustion engine having a water-air heat
exchanger for cooling the coolant. A compressing fan is connected
upstream of the heat exchanger. Further cooling systems are known
from Patent Application Nos. DE 102 02 533 A1, DE 41 09 406 C1, and
EP 1 541 855 B1.
[0005] Internal combustion engines and further assemblies of the
drivetrain must be cooled. Air cooling or liquid cooling (water)
come into consideration here. The cooling apparatus comprises one
or more heat exchangers. An exchange of thermal energy occurs in
the heat exchanger. The thermal energy contained in the coolant
water is discharged to coolant air. The air can be supplied to the
heat exchanger by way of a compressing or suctioning fan. One or
the other principle comes into consideration, depending on the
structural conditions.
[0006] Combustion air is supplied to the engine. The combustion air
must be free of contaminants. Therefore, it is filtered by an air
filter before it is supplied to the engine. The filtered particles
of all types accumulate in the air filter. These particles must be
removed continuously or from time to time, to ensure the function
of the air filter. This removal of dirt particles is generally
performed by suctioning them out. A partial vacuum is required for
this purpose, which generates a suction flow.
[0007] In some cases, however, no partial vacuum is present, for
example, for reasons of the design construction of the engine.
Therefore, a suction pressure must be generated separately for
cleaning the air filter, for example, by means of a suction pump.
This is complex, occupies structural space, and increases the
investment costs.
[0008] What is need in the art is a combination of a cooling system
with an air filter in such a manner that construction effort and
construction space and also the investment costs are kept within
narrow limits.
SUMMARY OF THE INVENTION
[0009] The present invention provides, contrary to all rules, a
compressing radiator fan is provided. A partial flow is branched
off therefrom. The partial flow is guided through a Venturi nozzle.
A suction line, which provides the partial vacuum necessary for
cleaning the air filter, is connected to the constriction of the
Venturi nozzle. A separate suction pump is therefore avoided.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010] The above-mentioned and other features and advantages of
this invention, and the manner of attaining them, will become more
apparent and the invention will be better understood by reference
to the following description of embodiments of the invention taken
in conjunction with the accompanying drawings, wherein:
[0011] FIG. 1 shows a first embodiment of a cooling system having a
single heat exchanger; and
[0012] FIG. 2 shows a cooling system similar to that according to
FIG. 1, but with two heat exchangers connected in series.
[0013] Corresponding reference characters indicate corresponding
parts throughout the several views. The exemplifications set out
herein illustrate embodiments of the invention and such
exemplifications are not to be construed as limiting the scope of
the invention in any manner.
DETAILED DESCRIPTION OF THE INVENTION
[0014] Referring now to the drawings, and more particularly to FIG.
1, there is shown a heat exchanger 1, also called a radiator
section. Heat exchanger 1 has an inlet and an outlet for a medium
to be cooled, and also an inlet and an outlet for coolant air. The
medium is in general a liquid, for example, water. The medium to be
cooled is charged with thermal energy, transferred from the
internal combustion engine. The coolant medium is generally air. It
absorbs thermal energy from the medium to be cooled. The heated air
is discharged into the surroundings.
[0015] A fan 2 generates the discharged coolant air flow, which is
pressurized. A suction nozzle 2.1 is connected upstream of fan 2,
and connection channel 3 is connected downstream. Connection
channel 3 therefore produces a conductive connection between fan 2
and heat exchanger 1. The coolant air flow generated by fan 2
therefore reaches heat exchanger 1 via connection line 3. The
connection line 3 widens in the present case. However, it can also
have an arbitrary cross section, for example, a uniform cross
section.
[0016] Instead of a single heat exchanger 1, a plurality of heat
exchangers can also be provided, from which a plurality of fans 2
are connected upstream. It is also conceivable to connect one
single fan 2 downstream from a plurality of heat exchangers.
[0017] A partial flow is branched off from the air flow flowing in
the connection line 3. A branch line 4 is provided for this
purpose. A Venturi nozzle 5 is connected downstream of branch line
4. It includes a constriction (throttle) 5.1 and a Venturi
expansion 5.2.
[0018] A suction line 6 is connected at the constriction 5.1. Air
filter 7 is provided at the inlet of the suction line. Combustion
air is supplied to the air filter by supply line 8. The air passes
through air filter 7 and reaches engine 9 in the purified state.
The particles held back by the air filter are suctioned out. They
reach the outside through suction line 6, through constriction 5.1,
and through Venturi expansion 5.2. Different structures come into
consideration as air filters. Thus, there are air filters having a
filter screen. A special form is an air filter without filter
medium; for example, it can operate according to the principle of
centrifugal force.
[0019] Referring now to FIG. 2, there is shown a cooling system
having two heat exchangers, specifically a first heat exchanger 1
and a second heat exchanger 10.
[0020] The system according to FIG. 2 differs from that according
to FIG. 1 also in that the branch line intended for the Venturi
nozzle is tapped between the two heat exchangers 1 and 10. The
branch line 4 is therefore connected to the space between the two
heat exchangers 1 and 10. A shutoff element (not shown here) can be
assigned to branch line 4. The suction power of Venturi nozzle 5
may thus be set.
[0021] While this invention has been described with respect to at
least one embodiment, the present invention can be further modified
within the spirit and scope of this disclosure. This application is
therefore intended to cover any variations, uses, or adaptations of
the invention using its general principles. Further, this
application is intended to cover such departures from the present
disclosure as come within known or customary practice in the art to
which this invention pertains and which fall within the limits of
the appended claims.
LIST OF REFERENCE NUMERALS
[0022] 1 heat exchanger [0023] 2 fan [0024] 2.1 suction nozzle
[0025] 3 connection line [0026] 4 branch line [0027] 5 Venturi
nozzle [0028] 5.1 constriction [0029] 5.2 Venturi expansion [0030]
6 suction line [0031] 7 air filter [0032] 8 air supply line [0033]
9 engine [0034] 10 heat exchanger
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