Total cooling assembly for I.C. engine-powered vehicles

• US 5,660,149 A
• Filed: 12/21/1995
• Issued: 08/26/1997
• Est. Priority Date: 12/21/1995
• Status: Expired due to Term

• Current Assignee: Siemens Electric Limited
• Original Assignee: Siemens Electric Limited
• Inventors: Lakerdas, Andrew, Kershaw, Peter A., Joseph, Alexander
• Primary Examiner(s): Kamen, Noah P.
• Application Number:
  US08/576,390
• Time in Patent Office: 614 Days
• Field of Search: 123/41.01, 123/41.11, 123/41.44, 123/41.49, 165/DIG. 306, 165/DIG. 316
• US Class Current: 123/41.44
• CPC Class Codes: B60K 11/00 Arrangement in connection with cooling of propulsion units heating the interior space B60H; cooling internal combustion engines per se F01P
• CPC Class Codes: B60K 11/04 Arrangement or mounting of radiators, radiator shutters, or radiator blinds B60K11/085 takes precedence
• CPC Class Codes: F01P 11/00 Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
• CPC Class Codes: F01P 11/10 Guiding or ducting cooling-air, to, or from, liquid-to-air heat exchangers
• CPC Class Codes: F01P 2005/025 using two or more air pumps
• CPC Class Codes: F01P 2005/046 with electrical pump drive
• CPC Class Codes: F01P 2005/105 Using two or more pumps
• CPC Class Codes: F01P 2005/125 Driving auxiliary pumps electrically
• CPC Class Codes: F01P 2025/52 Heat exchanger temperature
• CPC Class Codes: F01P 2050/30 Circuit boards
• CPC Class Codes: F01P 2060/02 Intercooler
• CPC Class Codes: F01P 2060/10 Fuel manifold
• CPC Class Codes: F01P 2070/50 mounting fans to heat-exchangers
• CPC Class Codes: F01P 5/06 Guiding or ducting air to, or from, ducted fans
• CPC Class Codes: F01P 5/10 Pumping liquid coolant; Arrangements of coolant pumps
• CPC Class Codes: F01P 7/10 by throttling amount of air flowing through liquid-to-air heat exchangers
• CPC Class Codes: F28D 1/0435 Combination of units extending one behind the other F28D1/0452 takes precedence
• CPC Class Codes: Y10S 165/306 Located at heat-exchange housing outlet
• CPC Class Codes: Y10S 165/316 Axial impeller located at heat-exchange housing inlet

Abstract

A heat exchanger module, a cooling fan module, a pump/fan module, and an electronics system control module are joined together in assembly to form a total cooling assembly for an automotive vehicle that is powered by an internal combustion engine. The cooling fan module is disposed directly behind the rear face of the radiator, and contains an electric motor-driven fan that draws ambient air across the radiator. At time of installation in a vehicle, the assembly is "dropped into" the vehicle engine compartment and secured in place. An electric motor-driven coolant pump module that pumps engine coolant through the engine and radiator, and an electronics system control module that controls the operation of the fan and pump motors also mount on the cooling fan module. When the vehicle has an air conditioning system, and/or turbo-charged engine, one and/or two additional heat exchangers form part of the heat exchanger module. The cooling fan module may comprise an axial flow fan or a ducted radial flow fan.

Claims

1. A total cooling assembly adapted for installation in an engine compartment of an automotive vehicle containing an internal combustion engine comprising means defining an air flow path through the assembly, and said assembly further comprising:

a heat exchanger module for transferring heat from fluid to air entering said flow path and comprising front and rear faces via which air can pass in heat exchange relation across said heat exchanger module to absorb heat from fluid flowing through said heat exchanger module thereby creating an effluent;

a cooling fan module disposed downstream of said heat exchanger module and comprising a fan/motor combination for drawing air across said heat exchanger module from said front face to said rear face of said heat exchanger module to create the effluent, said fan/motor combination comprising a fan and a first electric motor for operating said fan;

means joining said cooling fan module and said heat exchanger module together preparatory to installation of the assembly in an engine compartment of an automotive vehicle;

said assembly further comprising prior to its installation in an engine compartment of an automotive vehicle, a) a pump/motor combination comprising a fluid pump and a second electric motor for operating said pump, b) a fluid passage providing fluid communication between said heat exchanger module and said pump for fluid flow, and c) a controller for controlling operation of said first and second electric motors.

2. A total cooling assembly as set forth in claim 1 in which said cooling fan module comprises panel structure that comprises a walled through-passage within which said fan is disposed such that operation of said fan by said first electric motor causes effluent to be drawn through said through-passage.

3. A total cooling assembly as set forth in claim 2 in which said walled through-passage comprises a circular walled opening concentric with an axis of rotation of said fan, and said panel structure comprising a panel portion forming a motor mount mounting said first electric motor.

4. A total cooling assembly as set forth in claim 3 in which said panel portion comprises a configuration of struts disposed transverse to said circular walled opening and said motor mount is disposed centrally of said configuration of struts, and in which said configuration of struts, said motor mount, are said panel portion are an integral one-piece construction.

5. A total cooling assembly as set forth in claim 2 in which said controller is also disposed on said panel structure, and electric wiring extends from said controller to each of said first and second electric motors.

6. A total cooling assembly as set forth in claim 2 in which said panel structure comprises a panel portion confronting said rear face of said heat exchanger module, said panel portion comprises a walled opening circumscribing said through-passage and means mounting said pump/motor combination and said controller on said panel portion laterally of said walled opening.

7. A total cooling assembly as set forth in claim 6 in which said panel portion further includes flapper door means disposed on said panel portion spaced from said walled opening.

8. A total cooling assembly as set forth in claim 2 in which said panel structure has an expanse corresponding generally to that of said heat exchanger module and comprises a perimeter flange having a substantially sealed fit to said heat exchanger module.

9. A total cooling assembly as set forth in claim 1 in which said pump comprises an inlet and an outlet, and said fluid passage couples an outlet of said heat exchanger module to said pump inlet.

10. A total cooling assembly as set forth in claim 1 further including such an internal combustion engine having a coolant passage system, a second fluid passage providing fluid communication between said coolant passage system and said heat exchanger module, and a third fluid passage providing fluid communication between said pump and said coolant passage system.

11. A total cooling assembly as set forth in claim 10 in which said heat exchanger module comprises a radiator that is fluid-communicated to said engine and said pump by said second and third fluid passages respectively, and said heat exchanger module further comprises a heat exchanger disposed in assembly relation with said radiator, and said radiator and heat exchanger are disposed in tandem such that said fan draws ambient air across both said radiator and said heat exchanger.

12. A total cooling assembly as set forth in claim 1 in which said cooling fan module comprises duct means, and in which said fan is a radial flow fan disposed within said duct means.

13. In a front engine compartment of an automotive vehicle powered by an internal combustion engine, a total cooling assembly comprising means defining an air flow path through the assembly, and further comprising:

a heat exchanger module for transferring heat from fluid to air comprising front and rear faces via which air can pass in heat exchange relation across said heat exchanger module to absorb heat from fluid flowing through said heat exchanger module thereby creating an effluent;

a cooling fan module disposed proximal of said heat exchanger module and comprising a fan/motor combination for drawing air across said heat exchanger module from said front face to said rear face of said heat exchanger module to create the effluent, said fan/motor combination comprising a fan and a first electric motor for operating said fan;

said assembly further comprising a) a pump/motor combination comprising a fluid pump and a second electric motor for operating said pump, b) a fluid passage providing fluid communication between said heat exchanger module and said pump for fluid flow, and c) a controller for controlling operation of said first and second electric motors.

14. A cooling assembly as set forth in claim 13 in which said cooling fan module comprises panel structure that comprises a walled through-passage within which said fan is disposed such that operation of said fan by said first electric motor causes effluent to be drawn through said through-passage.

15. A cooling assembly as set forth in claim 14 in which said walled through-passage comprises a circular walled opening concentric with an axis of rotation of said fan, and said panel structure comprising a panel portion forming a motor mount mounting said first electric motor.

16. A cooling assembly as set forth in claim 15 in which said controller is disposed on said panel structure, and electric wiring extends from said controller to each of said first and second electric motors.

17. A cooling assembly as set forth in claim 15 in which in which said panel structure comprises a panel portion confronting said rear face of said heat exchanger module, said panel portion comprises a walled opening circumscribing said through-passage and means mounting said pump/motor combination and said controller on said panel portion laterally of said walled opening.

18. A cooling assembly as set forth in claim 14 in which said panel structure has an expanse corresponding generally to that of said heat exchanger module and comprises a perimeter flange having a substantially sealed fit to said heat exchanger module.

19. A cooling assembly as set forth in claim 13 further including such an internal combustion engine having a coolant passage system, a second fluid passage providing fluid communication between said coolant passage system and said heat exchanger module, and a third fluid passage providing fluid communication between said pump and said coolant passage system.

20. A cooling assembly as set forth in claim 13 in which said cooling fan module comprises duct means, and in which said fan is a radial flow fan disposed within said duct means.

21. A cooling fan module for use in a front engine compartment of an automotive vehicle powered by an internal combustion engine in association with a heat exchanger module having front and rear faces via which air can pass in heat exchange relation across such heat exchanger module to absorb heat from fluid flowing through such heat exchanger module, said cooling fan module comprising:

panel structure for disposition in confrontation to a rear face of such heat exchanger module;

a fan/motor combination mounted on said panel structure for drawing air across such heat exchanger module to create the effluent that passes through said panel structure, said fan/motor combination comprising a fan and a first electric motor for operating said fan;

a pump/motor combination mounted on said panel structure and comprising a pump having a port for fluid communication with such heat exchanger module and a second electric motor for operating said pump; and

a controller disposed on said panel structure for controlling operation of said first and second electric motors.

22. A cooling fan module as set forth in claim 21 in which said panel structure comprises duct means, and in which said fan is a radial flow fan disposed within said duct means.

23. A cooling fan module as set forth in claim 22 in which said panel structure further comprises second duct means laterally adjacent said first duct means and a second radial flow fan disposed within said second duct means and driven by a third electric motor under the control of said controller.

24. A cooling fan module as set forth in claim 21 in which said panel structure comprises a circular walled opening concentric with an axis of rotation of said fan, and within which said fan is disposed as an axial flow fan.

25. A method of assembling an internal combustion engine and a cooling system for such an engine comprising:

first, making a total cooling assembly that defines an air flow path through the assembly by assembling together,

     1) a heat exchanger module for transferring heat from fluid to air entering said air flow path and that comprises front and rear faces via which air can pass in heat exchange relation across said heat exchanger module to absorb heat from fluid flowing through said heat exchanger module thereby creating an effluent,

     2) a cooling fan module disposed proximal of said heat exchanger module and comprising a fan/electric motor combination for drawing air across said heat exchanger module from said front face to said rear face of said heat exchanger module to create the effluent,

     3) a pump/electric motor combination,

     4) a fluid conduit for placing said heat exchanger module and said pump in fluid communication, and

     5) a controller for controlling operation of said electric motors; and

then,

operatively associating said total cooling module with an internal combustion engine by,

     1) assembling a second fluid conduit to place said heat exchanger module and a coolant passage system of said engine in fluid communication, and

     2) assembling a third fluid conduit to place said pump and the coolant passage system of said engine in fluid communication.

26. A method of assembling an internal combustion engine and a cooling system for such an engine in an engine compartment of an automotive vehicle comprising:

first, making a total cooling assembly that defines an air flow path through the assembly by assembling together,

     1) a heat exchanger module for transferring heat from fluid to air entering said flow path and that comprises front and rear faces via which air can pass in heat exchange relation across said heat exchanger module to absorb heat from fluid flowing through said heat exchanger module thereby creating an effluent,

     2) a cooling fan module disposed proximal of said heat exchanger module and comprising a fan/electric motor combination for drawing air across said heat exchanger module from said front face to said rear face of said heat exchanger module to create the effluent,

     3) a pump/electric motor combination,

     4) a fluid conduit for placing said heat exchanger module and said pump in fluid communication, and

     5) a controller for controlling operation of said electric motors;

then,

assembling said total cooling module into an engine compartment of such a vehicle, and operatively associating said total cooling module with said internal combustion engine by,

     1) assembling a second fluid conduit to place said heat exchanger module and a coolant passage system of said engine in fluid communication, and

     2) assembling a third fluid conduit to place said pump and the coolant passage system of said engine in fluid communication.