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Fan system and seriate starting module and delayed starting unit thereofRelated Patent Categories: Pumps, Condition Responsive Control Of Pump Drive Motor, Plural Pumps Having Separate Drive Motors, Supply Sources, Or Delivery Destinations, Pumps In Parallel Flow Paths With Common Inflow Or Outflow, Having Means Sensing Condition In Common Inflow Or Outflow Line, With Control Of Plural Pump Drive Motors, Sequential Starting Or Stopping Of PumpsFan system and seriate starting module and delayed starting unit thereof description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070116577, Fan system and seriate starting module and delayed starting unit thereof. Brief Patent Description - Full Patent Description - Patent Application Claims
CROSS REFERENCE TO RELATED APPLICATIONS [0001] This Non-provisional application claims priority under 35 U.S.C. .sctn.119(a) on Patent Application No(s). 094140585 filed in Taiwan, Republic of China on Nov. 18, 2005, the entire contents of which are hereby incorporated by reference. BACKGROUND OF THE INVENTION [0002] 1. Field of Invention [0003] The invention relates to a fan system and a seriate starting module and a delayed starting unit thereof, and, in particular, to a fan system having a plurality of fan modules, and a seriate starting module and a delayed starting unit of the fan system. [0004] 2. Related Art [0005] Generally speaking, a large electronic system is always equipped with a fan system to ensure that the electronic system can be kept at the normal working temperature such that the electronic system can operate normally. [0006] FIG. 1 is a schematic illustration showing a conventional fan system 1 disposed in an electronic system (not shown). The fan system 1 receives an input voltage V.sub.in from exterior to serve as an operation voltage. The fan system 1 mainly has a starting module 11 and a plurality of fan modules 12a to 12n. After the starting module 11 receives the input voltage V.sub.in, the fan modules 12a to 12n are started simultaneously to dissipate the heat. However, when the fan modules 12a to 12n are started simultaneously, an extremely large start-up current and inrush current are generated at the moment of starting. Thus, the electronic system or the fan system 1 may crash or have unpredictable malfunction, or even the electronic system or the fan system 1 may be damaged. [0007] As shown in FIG. 2, another conventional fan system 1' has a plurality of starting modules 11a to 11n corresponding to the fan modules 12a to 12n so as to start the fan modules 12a to 12n, respectively. [0008] In view of the above-mentioned problems, the prior art adopts an analog starting control chip for starting the fan modules 12a to 12n in sequential, or a software module to control the starting sequence of the fan modules 12a to 12n. Thus, the prior art provides a protection mechanism for respectively starting the fan modules 12a to 12n at different time instants so as to avoid the malfunction caused when the fan modules 12a to 12n are simultaneously started. However, the analog starting control chip has a high price, and the software module has a complicated architecture. Thus, the overall manufacturing cost of the conventional fan system 1 is too high. In addition, the analog starting control chip only can delay the starting time of each of the fan modules 12a to 12n and cannot provide the function of soft-start. [0009] Thus, it is an important subject of the invention to provide a fan system and a seriate starting module and a delayed starting unit thereof to overcome the above-mentioned problems. SUMMARY OF THE INVENTION [0010] In view of the foregoing, the invention is to provide a fan system and a seriate starting module and a delayed starting unit thereof for starting a plurality of fan modules at different time instants in a seriate manner so as to avoid the malfunction caused when the fan modules are started simultaneously. [0011] In addition, the invention is also to provide a fan system and a seriate starting module and a delayed starting unit thereof having the resetting effect to discharge the residual charges in the fan system and thus avoid the malfunction. [0012] To achieve the above, a fan system of the invention is for receiving an input voltage from exterior. The fan system includes a first fan module, a second fan module and a seriate starting module. The seriate starting module, which is electrically connected with the first fan module and the second fan module, receives the input voltage, starts the first fan module according to the input voltage, and starts the second fan module according to the input voltage after the first fan module is started for a predetermined time. [0013] Furthermore, the invention also discloses a method of resetting a delaying circuit, which is coupled with an input voltage from exterior and has a capacitor and a switch element. The switch element receives the input voltage and is electrically connected with the capacitor and grounded. The method includes the steps of: separating the delaying circuit from the input voltage, turning on the switch element, and forming a discharge path from the capacitor to the switch element so as to perform a discharging operation. [0014] As mentioned above, the fan system and the seriate starting module and the delayed starting unit thereof according to the invention can sequentially start a plurality of fan modules at different time instants so as to avoid the malfunction caused by the extremely large start-up current and inrush current, which are generated by instantaneously starting the fan modules. The fan modules are started in a time-sharing manner to ensure that the fan system can operate normally, prevent the electronic system and the fan system from being damaged, and replace the analog starting control chip to reduce the overall manufacturing cost. In addition, the invention further possesses the reset function of discharging the charges remained in the fan system so as to prevent the malfunction from occurring. BRIEF DESCRIPTION OF THE DRAWINGS [0015] The invention will become more fully understood from the detailed description given herein below illustration only, and thus is not limitative of the present invention, and wherein: [0016] FIG. 1 is a schematic illustration showing a conventional fan system; [0017] FIG. 2 is a schematic illustration showing another conventional fan system; [0018] FIG. 3 is a schematic illustration showing a fan system according to a preferred embodiment of the invention; and [0019] FIG. 4 is a circuit diagram showing a fan system according to the preferred embodiment of the invention. DETAILED DESCRIPTION OF THE INVENTION Continue reading about Fan system and seriate starting module and delayed starting unit thereof... Full patent description for Fan system and seriate starting module and delayed starting unit thereof Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Fan system and seriate starting module and delayed starting unit thereof patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. 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