Externally programmable fan

• US 9,982,681 B2
• Filed: 06/06/2014
• Issued: 05/29/2018
• Est. Priority Date: 10/10/2013
• Status: Active Grant

• Current Assignee: Comair Rotron US, LLC
• Original Assignee: Gentherm Automotive Systems (China) Ltd. (Gentherm Incorporated)
• Inventors: Brown, Fred A., Hoffman, Kenneth
• Primary Examiner(s): Kraft, Logan
• Assistant Examiner(s): Fountain, Jason
• Application Number:
  US14/298,075
• Publication Number:
  US 20150104311A1
• Time in Patent Office: 1,453 Days
• CPC Class Codes: F04D 19/002 Axial flow fans
• CPC Class Codes: F04D 25/08 the working fluid being air, e.g. for ventilation
• CPC Class Codes: F04D 27/007 Conjoint control of two or more different functions
• CPC Class Codes: G05D 23/24 the sensing element having a resistance varying with temperature, e.g. a thermistor
• CPC Class Codes: H02P 23/0077 Characterised by the use of a particular software algorithm

Abstract

A fan comprising: (a) an impeller, (b) a motor connected to the impeller so that during operation the motor drives the impeller to move a fluid; (c) an instrumentation assembly that includes one or more components for controlling one or more operations of the fan; (d) an interface in communication with the instrumentation assembly; wherein the interface is configured so that one or more programs, one or more signals, or both can be input into the fan after a final assembly of the fan so that the fan can be configured to perform a desired function at the time of installation into a final product, reconfigured for a different purpose than originally programmed, or both.

Claims

1. A method comprising:

a. assembling a fan comprising;

i. an impeller,

ii. a motor,

iii. an instrumentation assembly including;

1. one or more printed circuit boards;

2. memory connected to the one or more printed circuit boards;

3. a microprocessor connected to the one or more printed circuit boards;

4. a thermal control circuit, a speed control circuit, or both;

iv. an interface in communication with the memory, the microprocessor, or both;

v. a housing that receives the impeller, the motor, the instrumentation assembly, and the interface; and

vi. a power connector that extends into the housing, wherein the power connector and the interface are spaced apart;

b. completing assembly of the fan and packaging the fan;

c. connecting a programming device to the completely assembled fan via the interface and programming the fan, reprogramming the fan, or both;

d. directly inputting one or more programs, one or more signals, or both directly into the memory, the microprocessor, or both through the interface; and

e. controlling the fan based upon one or more measured conditions of the thermal control circuit, the speed control circuit, or both;

f. removing a portion of the interface from a sealed containment, and

g. resealing a portion of the fan after the fan is programmed and/or reprogrammed.

2. The method of claim 1, wherein the method includes a step of disconnecting the programming device from the fan before the fan is placed into operation.

3. The method of claim 2, wherein the step of programming includes inputting control of one or more of:

speed of the impeller, speed of a blade, alarm failure threshold, temperature versus flow, volume of flow per unit time, safety functions, power saving operations, stand by modes, stand by verses temperature, performance settings, or a combination thereof.

4. The method of claim 3, wherein the instrumentation assembly includes memory, a microprocessor, or both and the interface is in communication with the memory, the microprocessor, or both so that the one or more programs, the one or more signals, or both are directly input in and stored for later use in controlling the fan.

5. The method of claim 4, wherein the method includes a step of inserting a portion of the programming device into a sealed containment.

6. The method of claim 1, wherein the fan is pre-programmed with a predetermined program and the method includes a step of connecting a programming device to the interface and reprogramming a partially rewriteable portion of the memory by inputting settings for one or more of:

inputting control of speed of the impeller, speed of a blade, alarm failure threshold, temperature versus flow, volume of flow per unit time, safety functions, power saving operations, stand by modes, stand by versus temperature, or performance settings.

7. The method of claim 1, wherein the printed circuit board has a printed circuit board interface for connecting the interface to the memory, the microprocessor, or both.

8. The method of claim 7, wherein the one or more programs are changed based upon the one or more measured conditions, and the program speed, control method, output signal, or a combination thereof are reconfigured based upon the one or more monitored conditions.

9. The method of claim 8, wherein the instrumentation assembly includes one or more thermistors, one or more temperature sensors, or both that are connected to the printed circuit board and the one or more thermistors, one or more temperature sensors, or both provide feedback, an output signal or both to the microprocessor, the speed control circuit, or both to execute a program based upon feedback received from the one or more thermistors, one or more temperature sensors, or both.

10. The method of claim 9, wherein the memory includes a standard fan speed program and the fan is reprogrammed with a second fan speed program based upon monitored conditions that are stored within the memory.

11. The method of claim 1, wherein the method includes a step of changing the one or more programs based upon the one or more measured conditions, and the program speed, control method, output signal, or a combination thereof are reconfigured based upon the one or more monitored conditions.

12. The method of claim 11, wherein the instrumentation assembly includes one or more thermistors, one or more temperature sensors, or both that are connected to the printed circuit board and the one or more thermistors, one or more temperature sensors, or both, and the method includes a step of providing feedback, an output signal or both to the microprocessor, the speed control circuit, or both to execute a program based upon feedback received from the one or more thermistors, one or more temperature sensors, or both.

13. The method of claim 1, wherein the memory includes a standard fan speed program and the method includes a step of reprogramming the memory with a second fan speed program based upon monitored conditions.

14. The method of claim 1, wherein the includes a step of programming multiple of the fans to work in unison, and the step of programming includes programming the speed control circuit of the multiple fans so that the multiple fans work together to achieve a predetermined condition.