1. A dust collecting apparatus detachably coupled with a vacuum cleaner, the dust collecting apparatus comprising:
a dust canister body comprising:
an exposed side exposed outside the vacuum cleaner upon mounting in the vacuum cleaner;
a first dust separating chamber for separating heavy dirt from air flowed in through an inlet port formed at one side of the first dust separating chamber using inertia and gravity;
a second dust separating chamber and a third dust separating chamber, the second dust separating chamber and the third dust separating chamber being isolated from the first dust separating chamber, the second dust separating chamber and the third dust separating chamber collecting fine dust from the air passing through the first dust separating chamber;
a first cyclone body and a second cyclone body having first and second cyclone chambers, respectively, which are respectively communicated with the first dust separating chamber, the first and second cyclone bodies separating the fine dust from the air passing through the first dust separating chamber using centrifugal force generated when the air is rotated; and
first and second outlet pipes which are respectively protruded from lower surfaces of the first and second cyclone bodies to upper sides of the first and second cyclone chambers, wherein the first and second cyclone bodies are eccentrically disposed in the first and second dust separating chambers so as to form a protruded portion which is exposed from the exposed side of the dust canister body, and wherein at least the protruded portion is made of a transparent material, and
wherein the first dust separating chamber comprises an inertia blocking plate arranged at a position corresponding to the inlet port of the dust canister body so that the dirt flowing through the inlet port in the first dust separating chamber collides with the inertia blocking plate at an early stage of the air flow and is pulled downward by gravity.
2. The apparatus according to claim 1, wherein all of the first and second cyclone bodies are made of the transparent material.
3. The apparatus according to claim 1, wherein the first dust separating chamber and the second and third dust separating chambers are isolated from each other by a first partition wall and the second and third dust separating chambers are isolated from each other by a second partition wall, and at least a part of each of the first and second partition walls is made of the transparent material.
4. The apparatus according to claim 1, wherein the first and second cyclone chambers further comprise first and second spiral guides, respectively, for increasing rotational force of the air flowed in the first and second cyclone chambers, the first and second spiral guides being tinted with a brighter color than the first and second cyclone bodies in order to clearly see the dirt flowing in the first and second cyclone chambers.
5. The apparatus according to claim 1, wherein the inertia blocking plate protrudes from an inner circumference of the first dust separating chamber and is bent downward.
6. The apparatus according to claim 1, wherein the inertia blocking plate is protruded to an outside of the first dust separating chamber, and the inlet port is formed at a side of the inertia blocking plate.
7. A dust collecting apparatus detachably coupled with a vacuum cleaner, the dust collecting apparatus comprising:
a dust canister body comprising:
an exposed side exposed outside the vacuum cleaner upon mounting in the vacuum cleaner;
a first dust separating chamber separating heavy dirt from air flowed in through an inlet port formed at one side of the first dust separating chamber using inertia and gravity;
a second dust separating chamber and a third dust separating chamber, which are isolated from the first dust separating chamber, the second dust separating chamber and the third dust separating chamber collecting fine dust from the air passing through the first dust separating chamber;
first and second cyclone bodies having first and second cyclone chambers, respectively, which are respectively communicated with the first dust separating chamber the first and second cyclone bodies separating the fine dust from the air passing through the first dust separating chamber by using centrifugal force generated when the air is rotated; and
first and second outlet pipes which are respectively protruded from lower surfaces of the first and second cyclone bodies to upper sides of the first and second cyclone chambers,
wherein the first and second cyclone bodies are eccentrically disposed in the first and second dust separating chambers so that a portion of each of the first and second cyclone bodies has a common portion contacted with a portion of the exposed side of the dust canister body, and wherein at least the common portion is made of a transparent material, and
wherein the first dust separating chamber is provided with an inertia blocking plate arranged at a position corresponding to the inlet port of the dust canister body so that the dirt flowing through the inlet port in the first dust separating chamber collides with the inertia blocking plate at an early stage of the air flow and is pulled downward by gravity.
8. The apparatus according to claim 7, wherein all of the first and second cyclone bodies are made of the transparent material.
9. The apparatus according to claim 7, wherein the first dust separating chamber and the second and third dust separating chambers are isolated from each other by a first partition wall and the second and third dust separating chambers are isolated from each other by a second partition wall, and at least a part of each of the first and second partition walls is made of the transparent material.
10. The apparatus according to claim 7, wherein the first and second cyclone chambers further comprise first and second spiral guides for increasing rotational force of the air flowed in the first and second cyclone chambers, and the first and second spiral guides are tinted with a brighter color than the first and second cyclone bodies in order to clearly see the dirt flowed in the first and second cyclone chambers.
11. The apparatus according to claim 7, wherein the inertia blocking plate protrudes from an inner circumference of the first dust separating chamber and is bent in a downward direction.
12. The apparatus according to claim 7, wherein the inertia blocking plate is protruded to an outside of the first dust separating chamber, and the inlet port is formed at a side of the inertia blocking plate.
13. A dust collecting apparatus detachably coupled with a vacuum cleaner, the dust collecting apparatus comprising:
a dust canister body comprising:
an exposed side exposed outside the vacuum cleaner upon mounting in the vacuum cleaner;
a first dust separating chamber separating heavy dirt from air flowed in through an inlet port formed at one side of the first dust separating chamber using inertia and gravity;
a second dust separating chamber and a third dust separating chamber, which are isolated from the first dust separating chamber, the second dust separating chamber and the third dust separating chamber collecting fine dust from the air passing through the first dust separating chambers, wherein the second and third dust separating chambers are made of a transparent material;
first and second cyclone bodies having first and second cyclone chambers, respectively, which are respectively communicated with the first dust separating chamber, the first and second cyclone chambers separating fine dust from the air passing through the first dust separating chamber using centrifugal force generated when the air is rotated, wherein the first and second cyclone chambers are made of a transparent material; and
first and second outlet pipes which are respectively protruded from lower surfaces of the first and second cyclone bodies to upper sides of the first and second cyclone chambers,
wherein the first dust separating chamber is provided with an inertia blocking plate arranged at a position corresponding to the inlet port of the dust canister body so that the dirt flowing through the inlet port in the first dust separating chamber collides with the inertia blocking plate at an early stage of the air flow and is pulled downward by gravity.
14. The apparatus according to claim 13, wherein the first and second cyclone chambers further comprise first and second spiral guides, respectively, for increasing rotational force of the air flowed in the first and second cyclone chambers, the first and second spiral guides being tinted with a brighter color than the first and second cyclone bodies in order to clearly see the dirt flowing in the first and second cyclone chambers.
15. The apparatus according to claim 13, wherein the inertia blocking plate is protruded from an inner circumference of the first dust separating chamber and then bent in a downward direction.
16. The apparatus according to claim 13, wherein the inertia blocking plate is protruded to an outside of the first dust separating chamber, and the inlet port is formed at a side of the inertia blocking plate.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A power system that powers an electric machine, comprising:
a converter operable to convert alternating current (AC) power received from the electric machine into direct current (DC) power when the electric machine is operating in a generation mode;
a high voltage direct current (HVDC) bus configured to receive DC power from the converter;
at least one component that enables operation of the power system; and
a backup power supply operable to receive a status signal corresponding to an operating condition of the component, operable to receive a signal corresponding to a detected operating voltage of the HVDC bus, and operable to communicate a signal to the power converter when both the detected operating voltage is greater than a threshold voltage and when the component is not operational.
2. The system of claim 1 wherein the power converter is operable to cause a plurality of terminals of the electric machine to be shorted together in response to the signal.
3. The system of claim 1 wherein the power converter comprises a plurality of transistor devices, and wherein the signal communicated from the backup power supply to the power converter causes an operational state of the plurality of transistor devices to be set such that the plurality of terminals of the electric machine are shorted together.
4. The system of claim 1 wherein communicating a signal to the power converter further comprises communicating a plurality of gating signals to a plurality of transistor devices such that when the transistor devices are gated, the plurality of terminals of the electric machine are shorted together.
5. The system of claim 1 wherein the component comprises:
a system controller operable to control operation of the power converter.
6. The system of claim 1 wherein the component comprises:
a housekeeping power supply operable to supply power to at least a system controller, wherein the system controller is operable to control the operation of the power converter.
7. The system of claim 6 wherein the power produced by the backup power supply is electrically isolated from the power produced by the housekeeping power supply.
8. The system of claim 1 further comprising:
a system controller operable to control operation of the power converter;
a first connection configured to communicate a test signal generated by the system controller to the backup power supply to cause a testing of the backup power supply; and
a second connection configured to communicate a feedback signal generated by the backup power supply to the system controller in response to the received test signal.
9. The system of claim 8 wherein the system controller is further operable to execute a protective routine in response to the feedback signal.
10. The system of claim 9 wherein executing the protective routine comprises:
prohibiting the electric power system from starting.
11. The system of claim 9 wherein executing the protective routine comprises:
alerting the operator of the electric machine.
12. The system of claim 8 further comprising:
an output interface operable to decouple the backup power supply from the power converter in response to the received test signal.
13. The system of claim 8 wherein the test signal is generated in response to the initiation of a device wherein the power system resides.
14. The system of claim 8 wherein the test signal is generated in response to an event that occurs during operation of the electrical system.
15. The system of claim 1, further comprising:
a memory that stores at least logic to analyze the received status signal and the received voltage signal, determine when both the detected operating voltage is greater than a threshold voltage and when the component is not operational, and generate the signal to the power converter; and
a processor operable to retrieve and execute the logic.
16. A power system that powers an electric machine, comprising:
a converter operable to convert alternating current (AC) power received from the electric machine into direct current (DC) power when the electric machine is operating in a generation mode;
a high voltage direct current (HVDC) bus configured to receive DC power from the converter;
at least one component that enables operation of the power system; and
a backup power supply operable to receive a status signal corresponding to an operating condition of the component, and operable to communicate a signal to the power converter when the component is not operational.
17. A method for preventing over voltages in a power system coupled to a permanent magnet electric machine, comprising:
detecting an operating voltage on a high voltage direct current (HVDC) bus;
determining if at least one component of the power system is operational;
communicating a signal to a power converter of the power system when the detected operating voltage is greater than a threshold voltage and when the component is not operational; and
shorting together a plurality of terminals of the electric machine.
18. The method of claim 17, further comprising:
comparing the detected operating voltage to the threshold voltage.
19. The method of claim 17, further comprising:
communicating a test signal to a backup power system;
testing operation of the backup power system; and
receiving a feedback signal in response to the communicated test signal, wherein the feedback signal corresponds to test results of the testing, and wherein shorting together the plurality of terminals of the electric machine is omitted at least during testing of the backup power system.
20. The method of claim 19, further comprising:
communicating the test signal from a system controller to the backup power system; and
transmitting the feedback signal from the backup power system to the system controller.
21. The method of claim 19, further comprising:
initiating operation of a device wherein the power system resides; and
communicating the test signal in response to the initiation of the device.
22. The method of claim 19, further comprising:
communicating the test signal in response to an event that occurs during operation of the electrical system.
23. The method of claim 17 wherein determining if the component is operational further comprises determining if a house keeping power supply is operational such that the signal is communicated to the power converter when the detected operating voltage is greater than the threshold voltage and when the house keeping power supply is not operational.
24. The method of claim 17 wherein determining if the component is operational further comprises determining if a system controller is operational such that the signal is communicated to the power converter when the detected operating voltage is greater than the threshold voltage and when the system controller is not operational.
25. The method of claim 17 wherein determining if the component is operational further comprises:
determining if a system controller is operational; and
determining if a house keeping power supply is operational,
wherein the signal is communicated to the power converter when the detected operating voltage is greater than the threshold voltage and when either of the system controller and the house keeping power supply is not operational.
26. The method of claim 25 wherein the signal is communicated to the power converter when the detected operating voltage is greater than the threshold voltage and when both of the system controller and the house keeping power supply are not operational.
27. The method of claim 17, wherein communicating the signal to the power converter further comprises communicating a plurality of gating signals to a plurality of transistor devices such that when the transistor devices are gated, the plurality of terminals of the electric machine are shorted together.
28. A system preventing over voltages in a power system coupled to an electric machine, comprising:
means for detecting an operating voltage on a high voltage direct current (HVDC) bus;
means for determining if at least one component of the power system is operational;
means for communicating a signal to a power converter of the power system when the detected operating voltage is greater than a threshold voltage and when the component is not operational; and
means to short a plurality of terminals of the electric machine together when the signal is communicated.
29. The system of claim 28, further comprising means for comparing the detected operating voltage to the threshold voltage.
30. The system of claim 28 wherein the means for determining if the component is operational further comprises:
means for determining if a house keeping power supply is operational wherein the signal is communicated to the power converter when the detected operating voltage is greater than the threshold voltage and when the house keeping power supply is not operational.
31. The system of claim 28 wherein the means for determining if the component is operational further comprises:
means for determining if a system controller is operational wherein the signal is communicated to the power converter when the detected operating voltage is greater than the threshold voltage and when the system controller is not operational.
32. The system of claim 28 wherein the means for determining if the component is operational further comprises:
means for determining if a system controller is operational; and
means for determining if a house keeping power supply is operational,
wherein the signal is communicated to the power converter when the detected operating voltage is greater than the threshold voltage and when either of the system controller and the house keeping power supply is not operational.
33. The system of claim 32 wherein the signal is communicated to the power converter when the detected operating voltage is greater than the threshold voltage and when both of the system controller and the house keeping power supply are not operational.
34. The method of claim 28, further comprising:
means for communicating a test signal to the backup power system;
means for testing operation of the backup power system; and
means for receiving a feedback signal in response to the communicated test signal, wherein the feedback signal corresponds to test results of the testing, and wherein shorting together the plurality of terminals of the electric machine is omitted at least during testing of the backup power system.
35. The method of claim 34, further comprising:
means for communicating the test signal from a system controller to the backup power system; and
means for transmitting the feedback signal from the backup power system to the system controller.
36. The method of claim 34, further comprising:
means for initiating operation of a device wherein the power system resides; and
means for communicating the test signal in response to the initiation of the device.
37. The method of claim 34, further comprising:
means for communicating the test signal in response to an event that occurs during operation of the electrical system.
38. A processor-readable medium storing instructions for causing a processor to prevent over voltages in a power system coupled to an electric machine by:
determining an operating voltage on a high voltage direct current bus;
determining if at least one component of the power system is operational; and
generating a signal that is communicated to a power converter of the power system when the determined operating voltage is greater than a threshold voltage and when the component is not operational, to cause shorting together of a plurality of terminals of the electric machine.
39. The medium of claim 38, further comprising instructions for comparing the detected operating voltage to the threshold voltage.
40. The medium of claim 38 wherein the instructions for determining if the component is operational further comprises instructions for determining if a house keeping power supply is operational such that the signal is communicated to the power converter when the detected operating voltage is greater than the threshold voltage and when the house keeping power supply is not operational.
41. The medium of claim 38 wherein the instructions for determining if the component is operational further comprises instructions for determining if a system controller is operational such that the signal is communicated to the power converter when the detected operating voltage is greater than the threshold voltage and when the system controller is not operational.
42. The medium of claim 38 wherein the instructions for determining if the component is operational further comprises:
instructions for determining if a system controller is operational; and
instructions for determining if a house keeping power supply is operational,
wherein the signal is communicated to the power converter when the detected operating voltage is greater than the threshold voltage and when either of the system controller and the house keeping power supply is not operational.
43. The medium of claim 38 wherein the instructions for determining if the component is operational further comprises:
instructions for determining if a system controller is operational; and
instructions for determining if a house keeping power supply is operational,
wherein the signal is communicated to the power converter when the detected operating voltage is greater than the threshold voltage and when both of the system controller and the house keeping power supply are not operational.