CENTRAL VACUUM CONTROL UNIT
First Claim
1. A central vacuum cleaning system comprising:
- a vacuum unit,a plurality of inlet valves,an exhaust,a cleaning air path from the inlet valves through the vacuum unit to the exhaust,a control unit comprising;
a power input,a power output,motor control circuitry to control application of power from the power input to the power output,a first port,a second port,a conduit providing a conduit air path between the first port and the second,a heat sink in thermal contact with the conduit airpath and a component of the motor control circuitry, wherein the control unit is connected through the first port and the second port in the cleaning air flow path between one of the plurality of inlet valves and the exhaust, and the power output is connected to a power input of the vacuum unit.
3 Assignments
0 Petitions
Accused Products
Abstract
A central vacuum cleaning system can include a vacuum unit, a plurality of inlet valves, an exhaust, a cleaning air path from the inlet valves through the vacuum unit to the exhaust, and a control unit. An example control unit can include a power input, a power output, motor control circuitry to control application of power from the power input to the power output, a first port, a second port, a conduit providing a conduit air path between the first port and the second, a heat sink in thermal contact with the conduit air path and a component of the motor control circuitry, wherein the control unit is connected through the first port and the second port in the cleaning air flow path between the inlets and the exhaust, and the power output is connected to a power input of the vacuum unit.
11 Citations
18 Claims
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1. A central vacuum cleaning system comprising:
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a vacuum unit, a plurality of inlet valves, an exhaust, a cleaning air path from the inlet valves through the vacuum unit to the exhaust, a control unit comprising; a power input, a power output, motor control circuitry to control application of power from the power input to the power output, a first port, a second port, a conduit providing a conduit air path between the first port and the second, a heat sink in thermal contact with the conduit air path and a component of the motor control circuitry, wherein the control unit is connected through the first port and the second port in the cleaning air flow path between one of the plurality of inlet valves and the exhaust, and the power output is connected to a power input of the vacuum unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A central vacuum cleaning system control unit for installation in a central vacuum cleaning system having a vacuum unit, a plurality of inlet valves, an exhaust, and a cleaning air path from the inlet valves through the vacuum unit to the exhaust, the control unit comprising:
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a power input, a power output, motor control circuitry to control application of power from the power input to the power output, a first port, a second port, conduit providing a conduit air path between the first port and the second, a heat sink in thermal contact with the conduit air path and a component of the motor control circuitry. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method of cooling motor control circuitry in a central vacuum cleaning system, the method comprising:
generating a vacuum to create air flow in a cleaning air path from one of a plurality of inlet valves through a vacuum unit to an exhaust, wherein the cleaning air path includes a conduit air path of a control unit connected between one of the plurality of inlet valves and the exhaust and the control unit comprising a power input, a power output, motor control circuitry to control application of power from the power input to the power output, a first port, a second port, a conduit providing the conduit air path between the first port and the second port, and a heat sink in thermal contact with the conduit air path and a component of the motor control circuitry. - View Dependent Claims (16, 17, 18)
Specification