LIAN YEO PENG (MY)
CN201439940U | 2010-04-21 | |||
CN2136351Y | 1993-06-16 | |||
CN201991798U | 2011-09-28 |
CLAIMS 1. A fan system (100) comprising: a rotating arrangement of vanes; a direct current motor for driving the rotating arrangement of vanes; a rechargeable power storage unit (10) electrically connected and functioning as a secondary power supply to the motor; an alternating current to direct current (AC-to-DC) converter (20) which is capable of converting alternating current (AC) of a primary power supply to direct current (DC) for charging the power storage unit (10) and powering the motor; and a master controlling unit (200) communicated with the motor to control operation of the motor, wherein the operation of the motor can be switched from being powered by the primary power supply to the secondary power supply during outage of primary power supply. 2. A fan system (100) according to claim 1, further comprising a light assembly disposed underneath the arrangement of the vanes and being controlled through the controlling unit. 3. A fan system (100) according to claim 1 or 2, wherein the master controlling unit includes a power supply switching unit (30) electrically connected to the AC- to-DC converter (20) and the rechargeable power storage unit (10) for carrying out power switching in between the primary and secondary power supply. 4. A fan system (100) according to claim 1 or 2, wherein the master controlling unit (200) includes a fan controlling circuit unit (40) for controlling the speed of the DC motor. 5. A fan system (100) according to claim 1 or 2, wherein the master controlling unit 5 (200) includes a light controlling circuit unit (50) for switching the light assembly between on and off status. 6. A fan system (100) according to claim 1 or 2, further comprising a charging unit (20) channeling power from the primary power supply through the AC to DC converter to charge the rechargeable power storage unit (10). 10 7. A fan system (100) according to claim 1 or 2, the master controlling unit (200) further includes a signal receiving unit (70) for wirelessly receiving a control signal from a remote controller (95). 8. A fan system (100) according to claim 1 or 2, wherein the master controlling unit (200) further includes a voltage stabilizing unit (80) for stabilizing the direct 15 current. 9. A fan system (100) according to claim 2, wherein the light assembly is LED lights. 10. A fan system (100) according to claim 1 or 2, wherein the rechargeable power storage unit (10) is a battery. 20 11. A fan system (100) according to claim 1 or 2, wherein the fan system (100) is ceiling fan. |
SUPPLY
FIELD OF INVENTION
The present invention relates to a fan system having an emergency power supply from a power storage unit when an input alternating current (AC) is failed. More particularly, the present invention relates to a fan system with light assembly a power supply switching unit which switches power supply from direct power supply to power storage unit for operating the fan system when an input AC is failed.
BACKGROUND OF INVENTION
With the advancement of technology, various types of fans with additional features are devised and produced. Commercial fans are designed to be cost effective and save more energy. However, when there is power outage, these fans will not able to function. Some areas especially rural areas are still facing the problem of frequent power outages, hence causing a lot of inconveniences to the end users.
Accordingly, there is a need for a fan system having a rechargeable power storage unit which charging by direct current (DC) to provide a backup power for the fan. Furthermore, there is a need for a power supply switching unit which switches power supply from an direct power supply to a power storage unit for operating the fan whenever there is an electrical power outage.
SUMMARY OF INVENTION
Accordingly, to solve the disadvantages and drawbacks of the prior art, there is provided a fan system comprises a rotating arrangement of vanes, a direct current motor for driving the rotating arrangement of vanes, a rechargeable power storage unit electrically connected and functioning as a secondary power supply to the motor, an alternating current to direct current (AC-to-DC) converter which is capable of converting alternating current (AC) of a primary power supply to direct current (DC) for charging the power storage unit and powering the motor; and a master controlling unit communicated with the motor to control operation of the motor, wherein the operation of the motor can be switched from being powered by the primary power supply to the secondary power supply during outage of primary power supply.
Preferably, the fan system further comprises a light assembly disposed underneath the arrangement of the vanes and being controlled through the controlling unit.
Preferably, the master controlling unit comprises a power supply switching unit (40) electrically connected to the AC-to-DC converter (10) and the power storage unit (30) for carrying out power switching in between the primary and secondary power supply. Preferably, the master controlling unit includes a fan controlling circuit unit , for controlling the speed of the DC motor.
Preferably, the fan system further comprises a charging unit (20) channeling power from the primary power supply through the AC-to-DC converter to charge the rechargeable power storage unit.
Other objects and advantages of the present invention will become apparent from the detailed description provided hereinafter. It should be understood however that the detailed description and specific examples, while indicating preferred embodiments of the invention, are intended for purposes of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.
BRIEF DESCRIPTION OF DRAWINGS
Figure 1 shows a block diagram of a fan system having an emergency power supply from a rechargeable power storage unit in a preferred embodiment of the invention. DETAILED DESCRIPTION OF INVENTION
The present invention is to provide a fan system (100) having an emergency power supply. A fan system (100) comprises a rotating arrangement of vanes, a direct current motor powered by a direct current supply (12) for driving the rotating arrangement of vanes, a rechargeable power storage unit (10) electrically connected and functioning as a second power supply to the motor, an alternating current to direct current (AC-to-DC) converter (20) which is capable of converting alternating current (AC) of a primary power supply to direct current (DC) for charging the power storage unit (10) and powering the motor, and a master controlling unit (200) communicated with the motor to control operation of the motor, wherein the operation of the motor can be switched from being powered by the primary power supply to the secondary power supply during outage of primary power supply. The master controlling unit (200) includes a power supply switching unit (30) electrically connected to the AC-to-DC converter (20) and the power storage unit (10), for automatically carrying out power switching in between the primary power supply and secondary power supply.
Referring to Figure 1, the fan system (100) comprises an AC-to-DC converter (20) electrically connected to a power supply (12) for receiving an input alternating current (AC) from the power supply (12) and converting the alternating current (AC) to direct current (DC). The AC-to-DC converter (20) having a power supply on/off switch to switch on or off the power supply. When the AC-to-DC converter (20) is ON and the input AC is supplied, the AC-to-DC converter (20) will automatically convert the input AC to a stable output DC. As shown in Figure 1 , a charging unit (60) is electrically connected to the AC-to-DC converter (20). The charging unit (60) receives the converted output DC from the AC-to-DC converter (10) to charge a rechargeable power storage unit (10) which is electrically connected to the voltage charging unit (20). The charging unit (20) channeling power from the primary power supply through the AC-to-DC converter to charge the rechargeable power storage unit (30). The power storage unit (30) will provide a backup power for the fan (100) whenever there is an electrical power outage.
Referring to Figure 1, there is shown a power supply switching unit (30) electrically connected to the AC-to-DC converter (20) and the power storage unit (10) for carrying out power switching in between the primary power supply and secondary power supply. When the input AC is supplied, the switching unit (30) will automatically switch the connection to the AC-to-DC converter (20) side to receive the converted output DC from the AC-to-DC converter (20) for operating the direct current motor and the light assembly by powering the circuit units connected therewith. On the other hand, when the input AC voltage is failed, the switching unit (30) will automatically switch the connection to the power storage unit (10) to receive the storing voltage of the power storage unit (10) for operating the direct current motor and the light assembly by powering the circuit units connected therewith. The switching unit (30) monitoring the constant power supply to the circuit units of the fan system to ensure the fan system (100) operating continuously even there is a power outage. The switching unit (30) itself being powered by the output DC from the AC-to-DC converter (20) when the input AC is supplied. In another way, the switching unit (30) itself being powered by the voltage storage of the power storage unit (10) whenever the input AC is failed. Preferably, the power storage unit (10) is a battery.
Preferably, the master controlling unit (200) includes a voltage stabilizing unit (80) which is electrically connected to the power supply switching unit (30) for stabilizing and supplying the direct current to the circuits units of the fan system (100) at an input terminal of the voltage stabilizing unit (80). Preferably, the voltage stabilizing unit (80) is also electrically connected to a control unit (90) and a signal receiving unit (70) at two output terminals thereof respectively for powering the control unit (60) and the signal receiving unit (70). The signal receiving unit (70) wirelessly receiving a control signal from a remote controller (95). The control unit (60) electrically connected to the signal receiving unit (70) for controlling the operation of the fan system by processing the wireless signal from the remote controller (95). The remote controller (95) is powered by its own battery.
Further referring to the Figure 1 , there is shown the master controlling unit (200) includes a fan controlling circuit unit (70) electrically connected to the control unit (60) for controlling an DC motor to drive the fan. Preferably, the master controlling unit includes a light controlling circuit unit (80) which is electrically connected to the control unit (60) for controlling light board of the light assembly to drive the light assembly. The remote controller (95) generates a control signal to the signal receiving unit (70) whereby the received control signal being sent to the master control unit (60) for processing and provide the execution signal to the fan controlling circuit unit (40) and the light controlling circuit unit (50). The remote controller (95) generates a control signal to the signal receiving unit (90) and subsequently control at least on/off status, speed and direction of rotation of the fan through the control unit (60). Furthermore, the remote controller (95) generates a control signal to the signal receiving unit (70) to control the light intensity of the light assembly through the control unit (90). The fan controlling circuit unit (70) controls an DC motor to drive the fan. Preferably, the DC motor is low voltage DC motor. The fan controlling circuit unit (40) and the light controlling circuit unit (50) are also electrically connected to the power supply switching unit (30) for powering the fan controlling circuit unit (40) and the light controlling circuit unit (50). In use, preferably the emergency fan (100) is a ceiling fan.
While several particularly preferred embodiments of the present invention have been described and illustrated, it should now be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention. Accordingly, the following claims are intended to embrace such changes, modifications, and areas of application that are within the spirit and scope of this invention.