Patent Publication Number: US-2013230411-A1

Title: Cooling system

Description:
BACKGROUND 
     1. Technical Field 
     The present disclosure relates to a cooling system. 
     2. Description of Related Art 
     Manufacturers usually have more than one supplier for the same item. This minimizes downtime when one supplier runs out of the item being supplied. However there is a downsize to this strategy. When a manufacturer of servers have more than one cooling fan supplier, the fans will, most of the time, have different actual performance parameters due to differences in manufacturing technique, skills etc. Such differences can be difficult for designers of the servers to accommodate such as when they are designing fan speed control curves. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Many aspects of the embodiments can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present embodiments. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the views. 
         FIG. 1  is a block diagram of an exemplary embodiment of a cooling system, the cooling system including a control chip, a cable, and a connector. 
         FIG. 2  is a block diagram of the control chip, the cable, and the connector of  FIG. 1 . 
     
    
    
     DETAILED DESCRIPTION 
     The disclosure, including the accompanying drawings, is illustrated by way of examples and not by way of limitation. It should be noted that references to “an” or “one” embodiment in this disclosure are not necessarily to the same embodiment, and such references mean at least one. 
     Referring to  FIG. 1 , an exemplary embodiment of a cooling system for a server includes a cooling fan  10  and a BIOS (Basic Input Output System) chip  20  set on a motherboard  50 . 
     The cooling fan  10  includes fan blades  100 , a driver  110 , a control chip  120 , a cable  150 , and a connector  160 . The control chip  120  receives control signals from the BIOS chip  20  through the cable  150  and the connector  160 , and controls the driver  110  according to the control signals. The driver  110  drives the fan blades  100 . The control chip  120  further transmits working parameters of the cooling fan  10  to the BIOS chip  20 . The control chip  120  stores a manufacturer&#39;s name and/or a manufacturer&#39;s code of the cooling fan  10 . 
     Referring to  FIG. 2 , the cable  150  includes a speed wire, a power wire, a ground wire, a pulse wire, and an information wire. The connector  160  includes first to fifth pins. The first pin is a speed pin TACH. The second pin is a power pin +12V. The third pin is a ground pin GND. The fourth pin is a pulse pin PWM. The fifth pin is an information pin INFO. First terminals of the five wires of the cable  150  are connected to the control chip  120 . Second terminals of the five wires of the cable  150  are respectively connected to the five pins of the connector  160 . The connector  160  connects to the motherboard  50 . The speed wire transmits speed data of the cooling fan  10  to the BIOS chip  20 . The power wire and the ground wire transmit power to the control chip  120 . The pulse wire transmits pulse width modulation signal to the control chip  120  for controlling the cooling fan  10 . The information wire transmits information of the cooling fan  10 , such as the manufacturer&#39;s name and/or the manufacturer&#39;s code of the cooling fan  10 , to the control chip  120 . 
     The BIOS chip  20  stores a plurality of different manufacturers&#39; names and/or manufacturers&#39; codes, and a plurality of control curves. Each manufacturer&#39;s name and/or manufacturer&#39;s code corresponds to a control curve. For example, the manufacturer&#39;s name of A corresponds to a first control curve, and the manufacturer&#39;s name of B corresponds to a second control curve. Each control curve includes a plurality of duty cycles and a plurality of temperatures. Each duty cycle corresponds to a temperature. For example, when the temperature is 50 degrees Celsius, the duty cycle is 50%. When the temperature is 60 degrees Celsius, the duty cycle is 60%. 
     When the cooling fan  10  is mounted in the server, the BIOS chip  20  acquires the manufacturer&#39;s name and/or the manufacturer&#39;s code of the cooling fan  10  stored in the control chip  120  through the cable  150  and the connector  160 . After that, the BIOS chip  20  obtains a control curve according to the manufacturer&#39;s name and/or the manufacturer&#39;s code, and transmits the control curve to the control chip  120 . The control chip  120  controls the cooling fan  10  according to the control curve. 
     The foregoing description of the exemplary embodiments of the disclosure has been presented only for the purposes of illustration and description and is not intended to be exhaustive or to limit the disclosure to the precise forms disclosed. Many modifications and variations are possible in light of everything above. The embodiments were chosen and described in order to explain the principles of the disclosure and their practical application so as to enable others of ordinary skill in the art to utilize the disclosure and various embodiments and with various modifications as are suited to the particular use contemplated. Alternative embodiments will become apparent to those of ordinary skills in the art to which the present disclosure pertains without departing from its spirit and scope. Accordingly, the scope of the present disclosure is defined by the appended claims rather than the foregoing description and the exemplary embodiments described therein.