The present invention relates to air compressor systems, and more particularly to air inlet control valves for air compressor systems.
In one aspect, the invention provides an air compressor system operably coupled to a power supply including an air storage tank and an air pump including an air manifold having an inlet configured to receive ambient air. The air pump is fluidly coupled to the air storage tank. The air compressor system also includes a motor having a first current level provided by the power supply to operate the air pump, a valve member in fluid communication with the inlet of the air manifold, and a controller operable to move the valve member to either increase or decrease a rate of ambient air traveling into the manifold. The controller monitors the first current level of the motor to change the rate of ambient air traveling into the manifold.
In another aspect, the invention provides an air compressor system operably coupled to a power supply including an air storage tank and an air pump including an air manifold having an inlet configured to receive ambient air. The air pump is fluidly coupled to the air storage tank. The air compressor system also includes a motor having a first angular velocity corresponding to a current level of the power supply to operate the air pump, a valve member in fluid communication with the inlet of the air manifold, and a controller operable to move the valve member to either increase or decrease a rate of ambient air traveling into the manifold. The controller monitors the first angular velocity of the motor to change the rate of ambient air traveling into the manifold.
In yet another aspect, the invention provides an air compressor system operably coupled to a power supply including an air storage tank and an air pump including an air manifold having an inlet configured to receive ambient air. The air pump is fluidly coupled to the air storage tank. The air compressor system also includes a motor operable at a first parameter corresponding to a current level of the power supply to operate the air pump, a valve member in fluid communication with the inlet of the air manifold, and a controller including a determined parameter of the motor to operate the air pump. The controller is coupled to the valve member, and the controller is configured to monitor the first parameter of the motor, compare the first parameter and the determined parameter of the motor, and move the valve member to change a rate of ambient air traveling into the air manifold.
Before any embodiments of the invention are explained in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings. The invention is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting.
The illustrated air pump 18 includes a piston head (not shown) located within a cylinder head 36 with the piston head coupled to the crank shaft 30 by a piston rod 37. With reference to
With reference to
With reference to
An inner diameter 84 of the sealing member 74 defined between the surfaces 78, 82 is sized to receive an outer diameter 85 of a valve member 86. In the illustrated embodiment, the valve member 86 rotates about a first axis 90 by a shaft 94, which is also known as a butterfly valve. The shaft 94 is received through the sealing member 74 by apertures 98 (
Referring back to
In another embodiment of the air inlet control valve 58 as illustrated in
The illustrated controller 126 is in electrical communication with other components of the air compressor system 10 to monitor a performance parameter of the component. For example, the controller 126 may monitor a rotational velocity of the motor 14 that drives the air pump 18, and/or the controller 126 may monitor an amount of electrical current traveling through the motor 14 that is provided by the power supply 28 to operate the air pump 18. In other embodiments, the controller 126 may monitor other performance parameters of the air compressor system 10.
In operation, the air inlet control valve 58 can be adjusted in a plurality of positions to regulate an airflow rate of ambient air from the filter housing 66 into the air intake manifold 38.
With reference to
In the embodiment of the air inlet control valve 58 including the gearing system, the second drive gear 122 rotates in a direction to rotate the first drive gear 106, through the intermediate gears 110, 118 and the clutch 112, to rotate the valve member 86. In the illustrated embodiment, the controller 126 moves the valve member 86 at a velocity inversely proportional (i.e., a quadratic relationship) to a rate of the angular velocity change of the motor 14. In other embodiments, the controller 126 may move the valve member 86 at a velocity that is linear to a rate of the angular velocity change of the motor 14. In further embodiments, the valve member 86 remains in the closed position (
However, if the angular velocity of the motor 14 is decreasing away from the maximum angular velocity of the motor 14 (step 150), the controller 126 begins to rotate the valve member 86 back towards the closed position (step 154). In some embodiments, the angular velocity of the motor 14 decreases because a current level of the power supply 28 supplied to the motor 14 decreases. However, as the valve member 86 moves back towards the closed position, the load on the motor 14 produced by the air pump 18 decreases. With the load on the motor 14 decreased, less electrical current is needed to operate the motor 14 at the maximum angular velocity. In other words, the illustrated air inlet control valve 58 regulates the rate of ambient air traveling into the air intake manifold 38 to control the load on the motor 14, and ultimately the amount of electrical current needed to power the air pump 18, to match the available electrical current provided by the power supply 28.
When the motor 14 is turned off after operation, the air inlet control valve 58 automatically moves back into the closed position (
Similarly to how the controller 126 monitors the angular velocity of the motor 14 to regulate the air inlet control valve 58, in another embodiment, the controller 126 monitors an amount of electrical current traveling through the motor 14 to regulate the air inlet control valve 58. After initial startup of the motor 14, the current level of the motor 14 to operate the air pump 18 decreases as the current spike decreases. With reference to
Accordingly, the air inlet control valve 58 regulates the airflow rate by rotating the valve member 86 towards the open position or the closed position to maximize the performance of the air compressor system 10 dependent upon the available electrical current from the power supply 28. In other words, the controller 126 is continuously monitoring (e.g., a closed loop feedback system) the angular velocity of the motor 14, the current level traveling through the motor 14, or both to regulate the air flow traveling into the air intake manifold 38 by the valve member 86.
In other embodiments, the valve member 86 may be moveable in two positions, e.g., a partially closed position and an open position (
With reference to
If the motor 14 is not rotating at the maximum operating velocity (e.g., rotating below the maximum operating velocity) and the current traveling through the motor 14 is at or about zero amperes (amps), then the controller 126 moves the valve member 86 in a partially open position (step 214). In the illustrated embodiment, the partially open position of the valve member 86 is an intermediate position between the positions of the valve member 86 illustrated in
Step 218 illustrates that the controller 126 indicates an operating status of the motor 14 to the operator when the motor 14 is not rotating at the maximum operating velocity and the electrical current traveling through the motor 14 is greater than the maximum current level of the motor 14. In the illustrated embodiment, the controller 126 visually or audibly alerts the operator that the motor 14 is operating above the maximum current level and below the maximum operating velocity. After the controller 126 alerts the operator, the method 186 returns to step 194 to maintain the valve member 86 in the closed position or to move the valve member 86 into the closed position. In another embodiment, the operator or the controller 126 may turn off the air compressor system 10 after the controller 126 alerts the operator to stop and protect the motor 14 from operating above the maximum current level and below the maximum operating velocity.
In addition, if the motor is not rotating at the maximum operating velocity, and the electrical current passing through the motor 14 is less than the maximum current level of the motor 14, the controller 126 moves the valve member 86 into the closed position (step 194).
However, if the motor 14 is rotating at the maximum operating velocity, but the electrical current traveling through the motor 14 is less than the minimum amps, then the controller 126 moves the valve member 86 to increase the ambient air traveling into the air manifold 38 (step 222). The method 186 then returns to step 198 to again monitor the current passing through the motor 14. In another embodiment, the method 186 may proceed to step 222 when the motor 14 is less than a target ampere level that is between the minimum and maximum amps levels. The target ampere level of the motor 14 is the amperage of maximum performance of the motor 14.
If the motor 14 is rotating at the maximum operating velocity, but the electrical current traveling through the motor 14 is greater than the maximum current level of the motor 14, then the controller 126 moves the valve member 86 to decrease the ambient air traveling into the air manifold 38 (step 226). The method 186 again returns to step 198 to monitor the current passing through the motor 14.
In addition, if the motor 14 is rotating at the maximum operating velocity, and the electrical current traveling through the motor 14 is above the minimum amps level but below the maximum amps level of the motor 14, the controller 126 maintains the position of the valve member 86 and returns to step 198 (e.g., a steady state operating condition). In another embodiment, if the motor 14 is rotating at the maximum operating velocity, and the electrical current traveling through the motor 14 is above the target ampere level but below the maximum amps level of the motor 14, the controller 126 maintains the position of the valve member 86 and returns to step 198.
Although the invention has been described in detail with reference to certain preferred embodiments, variations and modifications exist within the scope and spirit of one or more independent aspects of the invention as described.
This applications claims benefit of and priority to U.S. Provisional Patent Application No. 62/116,793, filed Feb. 16, 2015, and U.S. Provisional Patent Application No. 62/205,439, filed Aug. 14, 2015, the entire contents of which are hereby incorporated by reference herein.
Number | Name | Date | Kind |
---|---|---|---|
3594093 | Lukacs | Jul 1971 | A |
3778695 | Bauer, Jr. | Dec 1973 | A |
4060340 | Yanik et al. | Nov 1977 | A |
4558994 | Viola et al. | Dec 1985 | A |
4664601 | Uchida | May 1987 | A |
4968221 | Noll | Nov 1990 | A |
4975024 | Heckel | Dec 1990 | A |
5046928 | Peterson | Sep 1991 | A |
5388967 | Firnhaber et al. | Feb 1995 | A |
5411375 | Bauer | May 1995 | A |
5456582 | Firnhaber et al. | Oct 1995 | A |
5540558 | Harden | Jul 1996 | A |
5556271 | Zuercher et al. | Sep 1996 | A |
5694682 | Zuercher et al. | Dec 1997 | A |
RE36274 | Zuercher et al. | Aug 1999 | E |
RE36281 | Zuercher et al. | Aug 1999 | E |
6027315 | Hogan | Feb 2000 | A |
6056516 | Schoenfeld | May 2000 | A |
6120260 | Jirele | Sep 2000 | A |
6254358 | Merz | Jul 2001 | B1 |
6336797 | Kazakis et al. | Jan 2002 | B1 |
6676388 | Lee et al. | Jan 2004 | B2 |
6811384 | Virgilio | Nov 2004 | B2 |
7086841 | Cornwell | Aug 2006 | B2 |
7153106 | Cornwell | Dec 2006 | B2 |
7648343 | Cornwell | Jan 2010 | B2 |
7704052 | Iimura | Apr 2010 | B2 |
7811067 | Dietzsch et al. | Oct 2010 | B2 |
8740013 | Elberson | Jun 2014 | B2 |
8920133 | Bosua | Dec 2014 | B2 |
20040141862 | Cornwell | Jul 2004 | A1 |
20040213679 | Cornwell | Oct 2004 | A1 |
20070065302 | Schmitz | Mar 2007 | A1 |
20070154335 | Cornwell | Jul 2007 | A1 |
20100290929 | Ohi | Nov 2010 | A1 |
20100329898 | Dunn et al. | Dec 2010 | A1 |
20110194901 | Carlson | Aug 2011 | A1 |
20110277625 | Deikmeyer et al. | Nov 2011 | A1 |
20110311382 | Berwanger | Dec 2011 | A1 |
20130139535 | Nares | Jun 2013 | A1 |
Number | Date | Country |
---|---|---|
07293477 | Nov 1995 | JP |
2000045957 | Feb 2000 | JP |
2001082380 | Mar 2001 | JP |
2008116565 | May 2008 | JP |
WO-2014047377 | Mar 2014 | WO |
Entry |
---|
European Search Report for Application No. 16155955 dated Jun. 13, 2016 (1 page). |
Number | Date | Country | |
---|---|---|---|
20160238000 A1 | Aug 2016 | US |
Number | Date | Country | |
---|---|---|---|
62205439 | Aug 2015 | US | |
62116793 | Feb 2015 | US |