Radial venting axial fan for a power machine
First Claim
1. A heat exchange system for a power machine having an engine compartment and a heat exchanger compartment, comprising:
- a fan housing located between the heat exchanger compartment and the engine compartment;
a fan assembly positioned within the fan housing, the fan assembly including a center shaft with an axial fan and a radial fan coupled thereto and wherein the fan assembly has a longitudinal axis that extends lengthwise through the center shaft;
a fan drive mechanism operably coupled to the fan assembly and configured to cause the fan assembly to rotate about the longitudinal axis in a first direction and a second direction; and
a controller operably coupled to the fan drive mechanism and configured to provide a first control signal to the fan drive mechanism to cause the fan drive mechanism to rotate in the first direction and a second control signal to the fan drive mechanism to cause the fan drive mechanism to rotate in the second direction.
4 Assignments
0 Petitions
Accused Products
Abstract
A heat exchange system for a power machine that has an engine compartment and a heat exchanger compartment is discussed. The heat exchange system includes a fan housing located between the heat exchanger compartment and the engine compartment. A fan assembly that includes an axial fan and a radial fan coupled to a center shaft having a longitudinal axis extending through the center shaft is positioned within the fan housing. The fan assembly is operably coupled to a fan drive mechanism that is configured to cause the fan assembly to rotate about the longitudinal axis in a first direction and a second direction. First and second control signals from a controller cause the drive mechanism to rotate in the first and second directions, respectively.
37 Citations
20 Claims
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1. A heat exchange system for a power machine having an engine compartment and a heat exchanger compartment, comprising:
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a fan housing located between the heat exchanger compartment and the engine compartment; a fan assembly positioned within the fan housing, the fan assembly including a center shaft with an axial fan and a radial fan coupled thereto and wherein the fan assembly has a longitudinal axis that extends lengthwise through the center shaft; a fan drive mechanism operably coupled to the fan assembly and configured to cause the fan assembly to rotate about the longitudinal axis in a first direction and a second direction; and a controller operably coupled to the fan drive mechanism and configured to provide a first control signal to the fan drive mechanism to cause the fan drive mechanism to rotate in the first direction and a second control signal to the fan drive mechanism to cause the fan drive mechanism to rotate in the second direction. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A power machine having a engine located in an engine compartment and a heat exchanger located in a heat exchanger compartment, the power machine comprising:
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a fan housing having a fan assembly located therein positioned between the engine compartment and the heat exchanger compartment, the fan assembly configured to be rotated in a first direction and a second direction; a sensor configured to provide a sensor signal indicative of an operational condition; a fan override device capable of being manipulated by the operator and configured to provide an override signal indicative of the status of the fan override device; and a controller operably coupled to the fan assembly and configured to receive the sensor signal and the fan override signal wherein the controller is further configured to control rotation of the fan assembly based on the sensor signal and the operator signal. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A method of exchanging heat in a power machine, comprising:
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providing a fan housing between an engine compartment and a heat exchanger compartment having a fan assembly with an axial fan operably coupled to a radial fan capable of being rotated in two different directions located therein; receiving a first signal indicative of a status of a fan override input; receiving a second signal indicative of a status of an operating condition of the power machine; and controlling the direction of rotation of the fan assembly in response to the first and second signals. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification