Patent Publication Number: US-2023142124-A1

Title: Dual-voltage door operator control system

Description:
BACKGROUND OF THE INVENTION 
     Field of the Invention 
     The present invention relates to a dual-voltage door operator control system compatible with two different voltages at the same time. 
     DESCRIPTION OF THE RELATED ART 
     Generally, power supply systems in many countries around the world can be roughly classified into single-phase electricity and three-phase electricity, and the single-phase electricity and the three-phase electricity in many countries each have different voltages. Taking the United States as an example, single-phase electricity has two different voltage specifications, i.e. a high voltage and a low voltage, wherein the low voltage is 115V, and the high voltage is 230V; on the other hand, three-phase electricity also has two different voltage specifications, i.e. a high voltage and a low voltage, wherein the low voltage is 230V and the high voltage is 460V. 
     In other words, the U.S. power supply system has four voltage specifications. However, for a long time, various voltage specifications have caused considerable trouble for door operator suppliers because the suppliers must develop and produce door operator systems for these four voltage specifications. Moreover, attention must also be paid to the power supply specifications of the site during installation. Once the installed door operator system does not meet the power supply specifications of the site, the door operator system may be unable to operate, and at worst, the door operator system may be burned down and even harm the personnel. 
     Accordingly, a dual-voltage door operator control system which is safe, reliable and compatible with at least two voltages is expected in the industry. 
     SUMMARY OF THE INVENTION 
     The main purpose of the present invention is to provide a dual-voltage door operator control system, which is compatible with at least two different voltages, is integrated with a brake, reduces development, manufacturing and inventory costs, simplifies installation procedures, and reduces the risk of installation failures. 
     In order to achieve the above object, the present invention provides a dual-voltage door operator control system, which mainly comprises a contactor, a high-voltage connector, a low-voltage connector, a rectifier and a brake. The contactor includes a power source side and a load side, and the power source side is electrically coupled to an external power source; the high-voltage connector, the low-voltage connector and the rectifier are electrically connected to the contactor; the brake is electrically connected to at least one of the contactor, the rectifier, the high-voltage connector and the low-voltage connector. A door operator motor is selectively coupled to the high-voltage connector or the low-voltage connector according to the external power source. When the door operator motor is electrically coupled to the low-voltage connector, the low-voltage connector enables the rectifier to full-wave rectify the external power source and then to electrically energize the brake; when the door operator motor is electrically coupled to the high-voltage connector, the high-voltage connector enables the rectifier to half-wave rectify the external power source and then to electrically energize the brake. 
     The door operator control system of the present invention can be compatible with the high voltage and the low voltage. The user can connect the motor to the corresponding high-voltage connector or low-voltage connector according to the voltage specification of the external power source provided at the site so that the external power source can electrically energize the entire system. Moreover, the system is also further integrated with a brake of a single specification, and no matter whether the external power source is a high-voltage power source or a low-voltage power source, the brake can be electrically energized through the rectifier. 
     Furthermore, when the external power source is a single-phase AC power source, the single-phase door operator motor includes a first running winding, a second running winding and a starting winding; the load side of the contactor includes a first connection terminal, a second connection terminal, a third connection terminal and a fourth connection terminal. If the external power source is a lower-voltage power source, the door operator motor is electrically coupled to the low-voltage connector, and the low-voltage connector connects the first running winding in parallel with the second running winding to form a running winding pair, electrically couples the first connection terminal and the second connection terminal to two ends of the starting winding respectively, and electrically couples the third connection terminal and the fourth connection terminal to two ends of the running winding pair. If the external power source is a high-voltage power source, the door operator motor is electrically coupled to the high-voltage connector, and the high-voltage connector connects the first running winding in series with the second running winding to form a running winding string, electrically couples the first connection terminal to one end of the starting winding, electrically couples the other end of the starting winding between the first running winding and the second running winding, and electrically couples the third connection terminal and the fourth connection terminal to two ends of the running winding string respectively. 
     Also, when the external power source is a three-phase AC power source, the three-phase door operator motor includes a plurality of windings; the load side of the contactor includes a first connection terminal, a second connection terminal and a third connection terminal. If the external power source is a low-voltage power source, the door operator motor is electrically coupled to the low-voltage connector, and the low-voltage connector enables the plurality of windings of the door operator motor to form a Y-Y connection and electrically couples the first connection terminal, the second connection terminal and the third connection terminal to three outer connection terminals of the Y-Y connection respectively. On the other hand, if the external power source is a high-voltage power source, the door operator motor is electrically coupled to the high-voltage connector, and the high-voltage connector enables the plurality of windings of the door operator motor to form a Y connection and electrically couples the first connection terminal, the second connection terminal and the third connection terminal to three outer connection terminals of the Y connection respectively. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    is a block diagram of a system according to the present invention. 
         FIG.  2    is a circuit diagram of a single-phase system according to a preferred embodiment of the present invention. 
         FIG.  3 A  is an equivalent circuit diagram of the windings of a door operator motor powered by a single-phase power source with a low-voltage. 
         FIG.  3 B  is an equivalent circuit diagram of the windings of the door operator motor powered by a single-phase power source with a high-voltage. 
         FIG.  4    is a circuit diagram of a three-phase system according to a preferred embodiment of the present invention. 
         FIG.  5 A  is an equivalent circuit diagram of the windings of a door operator motor powered by a three-phase power source with a low-voltage. 
         FIG.  5 B  is an equivalent circuit diagram of the windings of the door operator motor powered by a three-phase power source with a high-voltage. 
     
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Before a dual-voltage door operator control system according to the present invention is described in detail in the embodiments, it should be noted that in the following description, similar components will be designated by the same reference numerals. Furthermore, the drawings of the present invention are for illustrative purposes only, they are not necessarily drawn to scale, and not all details are necessarily shown in the drawings. 
     Reference is made to  FIG.  1   , which is a block diagram of the system according to the present invention. The dual-voltage door operator control system of this embodiment includes two subsystems, which are adapted to a single-phase alternating current and a three-phase alternating current respectively. The single-phase subsystem or the three-phase subsystem of the present invention can be selected according to different power supply specifications, and each subsystem is compatible with at least two external power sources Po having different voltages, such as a high voltage and a low voltage. 
     Reference is made to  FIG.  1    and  FIG.  2    at the same time.  FIG.  2    is a circuit diagram of the single-phase system according to a preferred embodiment of the present invention. The single-phase system will be described below. As shown in the figure, the single-phase system of this embodiment mainly comprises a contactor  2 , a high-voltage connector  3 , a low-voltage connector  4 , a rectifier  5  and a brake  6 . The contactor  2  includes a power source side  21  and a load side  22 , wherein the power source side  21  is electrically coupled to an external power source Po, and the load side  22  includes a first connection terminal T 1 , a second connection terminal T 2 , a third connection terminal T 3  and a fourth connection terminal T 4 . 
     Furthermore, the rectifier  5  in this embodiment is a bridge rectifier, which includes two AC voltage input ends IA 1  and IA 2  electrically connected to the fourth connection terminal T 4  and the third connection terminal T 3  respectively; one DC voltage output end OD 1  of the rectifier  5  is electrically connected to the high-voltage connector  3  and the low-voltage connector  4 , and the other DC voltage output end OD 2  is electrically connected to the brake  6 . The arrangements of connection lines will be described in detail later. In addition, one end of the brake  6  is electrically connected to the third terminals of the high-voltage connector  3  and the low-voltage connector  4 , and the other end is electrically connected to the DC voltage output end OD 2  of the rectifier  5 . 
     Moreover, the high-voltage connector  3  includes a female socket  32 , the low-voltage connector  4  includes a female socket  42 , and a male plug  34  is disposed on a door operator motor M. Furthermore, the male plug  34  includes a winding terminal part Wm and a power source jumper part Pm, and the winding terminal part Wm is electrically connected to the connection terminals of each winding of the door operator motor M. 
     The door operator motor M of this embodiment includes a first running winding  61 , a second running winding  62  and a starting winding  63 . As shown in  FIG.  2   , two connection terminals BK and WH of the first running winding  61  are electrically connected to the ninth terminal and the tenth terminal of the winding terminal part Wm of the male plug  34  respectively; two connection terminals O and Y of the second running winding  62  are electrically connected to the twelfth terminal and the seventh terminal of the winding terminal part Wm respectively; two connection terminals BR and R of the starting winding  63  are electrically connected to the fifteenth terminal and the thirteenth terminal of the winding terminal part Wm respectively. 
     On the other hand, in the power source jumper part Pm of the male plug  34 , the first terminal and the fourth terminal are connected to each other, and the third terminal and the sixth terminal are connected to each other. Its purpose will be described in detail later. 
     Next, the female socket  42  of the low-voltage connector  4  will be described below, which includes a connection terminal part Lm and a power source terminal part Lp. In the connection terminal part Lm, the fifteenth terminal is electrically coupled to the first connection terminal T 1  of the load side  22  of the contactor  2 ; the thirteenth terminal is electrically coupled to the second connection terminal T 2  of the load side  22  of the contactor  2 ; the twelfth terminal is connected in parallel with the ninth terminal and then electrically coupled to the third connection terminal T 3  of the load side  22  of the contactor  2 ; the tenth terminal is connected in parallel with the seventh terminal and then electrically coupled to the fourth connection terminal T 4  of the load side  22  of the contactor  2 . 
     Reference is made to  FIG.  2    and  FIG.  3 A .  FIG.  3 A  is an equivalent circuit diagram of the windings of the door operator motor powered by a single-phase power source with a low-voltage (115V). After the male plug  34  of the door operator motor M is inserted into the female socket  42 , by means of the fact that the twelfth terminal is connected in parallel to the ninth terminal in the female socket  42  and the fact that the tenth terminal is connected in parallel to the seventh terminal in the female socket  42 , the corresponding windings connected to these terminals of the male plug  34  are connected in parallel accordingly. That is, as shown in the equivalent circuit diagram of  FIG.  3 A , the first running winding  61  is connected in parallel with the second running winding  62  to form a running winding pair PW 1 . 
     In addition, after the male plug  34  of the door operator motor M is inserted into the female socket  42 , the first connection terminal T 1  and the second connection terminal T 2  are electrically coupled to the two connection terminals BR and R of the starting winding  63  through the fifteenth terminals and the thirteenth terminals of the male plug  34  and the female socket  42  respectively. Similarly, the third connection terminal T 3  and the fourth connection terminal T 4  are electrically coupled to two ends of the running winding pair PW 1  (i.e. the terminals BK-O and WH-Y) through the ninth terminals and the seventh terminals of the male plug  34  and the female socket  42  respectively. 
     Besides, with regard to the power source terminal part Lp of the female socket  42 , the sixth terminal is electrically connected to the end V− of the external power source Po, which is connected to the third terminal through a corresponding jumper connection of the male plug  34 , and one terminal of the brake  6  is also connected to the third terminal. Moreover, the first terminal is electrically connected to the end AC_IN of the external power source Po, which is connected to the fourth terminal through a corresponding jumper connection of the male plug  34  and then to the input end AC 110  of a power supply transformer (not shown in the figure) so as to electrically energize the entire system. 
     On the other hand, as shown in  FIG.  2   , the DC voltage output end OD 1  of the rectifier  5  is electrically coupled to the end V− of the external power source Po through the sixth terminal of the female socket  42  of the low-voltage connector  4 , and the other DC voltage output end OD 2  is electrically coupled to the brake  6 . Accordingly, the power obtained after performing full-wave rectification by the rectifier  5  will be applied to the brake  6 . In this embodiment, the input voltage of the AC power source is 115V, and the output voltage of the power outputted by the rectifier  5  is about 103.5V. 
     After the male plug  34  of the door operator motor M is inserted into the female socket  42  (i.e. the connection of the low-voltage connector  4  is completed), the external power source Po electrically energizes the entire door operator system, wherein the ends AC 110  and V− of the external power source Po are electrically connected to the contactor  2 , the rectifier  5  and brake  6 . 
     Reference is made to  FIG.  2    and  FIG.  3 B .  FIG.  3 B  is an equivalent circuit diagram of the windings of the door operator motor powered by a single-phase power source with a high voltage. The configuration relevant to the single-phase power source with a high voltage (e.g. 230V) in this embodiment will be described below. Briefly, the main difference between the present embodiment and the aforementioned embodiment only lies in the connection configurations of the female sockets  32  and  42 . 
     The female socket  32  of this embodiment also includes a connection terminal part Lm and a power source terminal part Lp. In the connection terminal part Lm, the fifteen terminal is electrically coupled to the first connection terminal T 1  of the load side  22  of the contactor  2 ; the thirteen terminal, the twelfth terminal, the eleventh terminal and the tenth terminal are electrically connected to one another. Furthermore, the ninth terminal is electrically coupled to the third connection terminal T 3  of the load side  22  of the contactor  2 ; the seventh terminal is electrically coupled to the fourth connection terminal T 4  of the load side  22  of the contactor  2 . 
     Accordingly, after the male plug  34  of the door operator motor M is inserted into the female socket  32 , by means of the fact that the thirteen terminal, the twelfth terminal and the tenth terminal of the female socket  32  are electrically connected to each other, the first running winding  61  of the motor M is connected in series with the second running winding  62  to form a running winding string PW 2 , that is, the connection terminal WH of the first running winding  61  and the connection terminal O of the second running winding  62  are connected to each other, and the connection terminal R of the starting winding  63  is electrically connected to the connection terminal WH of the first running winding  61  and the connection terminal O of the second running winding  62 , as shown in the equivalent circuit diagram of  FIG.  3 B . 
     When the male plug  34  of the door operator motor M is inserted into the female socket  32 , the first running winding  61  of the door operator motor M is connected in series with the second running winding  62  to form the running winding string PW 2 , the first terminal T 1  is electrically coupled to the connection terminal BR of the starting winding  63 , the other connection terminal R of the starting winding  63  is electrically coupled between the first running winding  61  and the second running winding  62 , and the third connection terminal T 3  and the fourth connection terminal T 4  are electrically coupled to two ends of the running winding string PW 2  (i.e. the connection terminal BK of the first running winding  61  and the connection terminal Y of the second running winding  62 ), respectively. 
     Furthermore, with regard to the power source terminal part Lp of the female socket  32 , the sixth terminal is electrically connected to the end AC 2  of the external power source Po, which is connected to the third terminal through a jumper connection of the male plug  34 , and one terminal of the brake  6  is also connected to the third terminal. In addition, the first terminal is electrically connected to the end AC_IN of the external power source Po, which is connected to the fourth terminal through a jumper connection of the male plug  34  and then to the input end AC 230  of a power supply transformer (not shown in the figure) so as to electrically energize the entire system. 
     On the other hand, as shown in  FIG.  2   , as the AC voltage input end IA 2  of the rectifier  5  is electrically coupled to the end AC 2  of the external power source Po, after the male plug  34  of the door operator motor M is inserted into the female socket  32 , the external power source Po electrically energizes the entire door operator system, and the rectifier  5  performs half-wave rectification. In this embodiment, the voltage of the output power obtained by performing half-wave rectification on the 230V AC power source by the rectifier  5  is about 103.5V. 
     Reference is made to  FIG.  1    and  FIG.  4   .  FIG.  4    is a circuit diagram of a three-phase system according to a preferred embodiment of the present invention. As shown in the figure, the three-phase system of this embodiment is similar to the aforementioned single-phase system and also comprises a contactor  2 , a high-voltage connector  3 , a low-voltage connector  4 , a rectifier  5  and a brake  6 . The difference lies in that the load side  22  of the contactor  2  has only three connection terminals, namely the first connection terminal T 1 , the second connection terminal T 2  and the third connection terminal T 3 . 
     In addition, the rectifier  5  of this embodiment is also slightly different from that of the aforementioned single-phase system in connection pattern. The two AC voltage input ends IA 1  and IA 2  of the rectifier  5  in this embodiment are electrically connected to a three-phase AC power source (an external power source Po), the DC voltage output end OD 1  of the rectifier  5  is electrically connected to the end V− of the external power source Po through the sixth terminal of the female socket  42  of the low-voltage connector  4 , and the other DC voltage output end OD 2  of the rectifier  5  is electrically connected to the power source side  21  of the contactor  2  (e.g. the terminal L 4 ) while the corresponding terminal (e.g. the terminal T 4 ) of the load side  22  of the contactor  2  is electrically connected to the brake  6 . Briefly, in this embodiment, the brake is electrically energized through the contactor  2 . 
     Moreover, the door operator motor M of this embodiment is a three-phase induction motor and mainly includes a first winding M 11 , a second winding M 12 , a third winding M 13 , a fourth winding M 14 , a fifth winding M 15  and a sixth winding M 16 . Also, as shown in  FIG.  4   , one connection terminal GY of the first winding M 11  is electrically connected to the eleventh terminal of the winding terminal part Wm of the male plug  34 , and the other connection terminal of the first winding M 11  is connected to the fourth winding M 14  and the fifth winding M 15 ; the two connection terminals WH and O of the second winding M 12  are electrically connected to the fourteenth terminal and the eighth terminal of the winding terminal part Wm of the male plug  34  respectively. 
     On the other hand, the two connection terminals BL and R of the third winding M 13  are electrically connected to the seventh terminal and the thirteenth terminal of the winding terminal part Wm of the male plug  34  respectively; one connection terminal P of the fourth winding M 14  is electrically connected to the tenth terminal of the winding terminal part Wm, and the other connection terminal of the fourth winding M 14  is connected to the first winding M 11  and the fifth winding M 15 ; one connection terminal BR of the fifth winding M 15  is electrically connected to the twelfth terminal of the winding terminal part Wm, and the other connection terminal is connected to the first winding M 11  and the fourth winding M 14 ; and two connection terminals Y and BK of the sixth winding M 16  are electrically connected to the ninth terminal and the fifteenth terminal of the winding terminal part Wm respectively. 
     Similarly, in the power source jumper part Pm of the male plug  34  of the present embodiment, the first terminal and the fourth terminal are connected, and the third terminal and the sixth terminal are connected so that the jumper connections for the power supply can be made. Its purpose will be described in detail later. 
     Next, the female socket  42  of the low-voltage connector  4  of the three-phase system will be illustrated below, wherein the fifteenth terminal of the connection terminal part Lm is connected in parallel to the twelfth terminal and then electrically couple to the first connection terminal T 1  of the load side  22  of the contactor  2 ; the fourteenth terminal of the connection terminal part Lm is connected in parallel to the eleventh terminal and then electrically coupled to the second connection terminal T 2  of the load side  22  of the contactor  2 ; the thirteenth terminal of the connection terminal part Lm is connected in parallel to the tenth terminal and then electrically coupled to the third connection terminal T 3  of the load side  22  of the contactor  2 ; the ninth terminal, the eighth terminal and the seventh terminal of the connection terminal part Lm are connected in parallel to each other. 
     Reference is made to  FIG.  5 A , which is an equivalent circuit diagram of the windings of the door operator motor powered by a three-phase power source with a low-voltage (e.g. 230V). After the male plug  34  of the door operator motor M is inserted into the female socket  42  (i.e. the connection of the low-voltage connector  4  is completed), through the configuration of the jumper connections of the tenth terminal to the fifteenth terminal in the female socket  42 , the windings of the male plug  34  corresponding to these terminals of the female socket  42  are connected in parallel. That is, as shown in the equivalent circuit diagram of  FIG.  5 A , the first winding M 11  is connected in parallel with the second winding M 12 , the third winding M 13  is connected in parallel with the fourth winding M 14 , and the fifth winding M 15  is connected in parallel with the sixth winding M 16 . 
     In fact, one of the main objects of the low-voltage connector  4  of this embodiment is to enable the six windings M 1  of the door operator motor M to form a Y-Y connection and to electrically couple the first connection terminal T 1 , the second connection terminal T 2  and the third connection terminal T 3  to the three outer connection terminals M 2 , M 3  and M 4  of the Y-Y connection respectively. 
     Moreover, regarding the power source terminal part Lp of the female socket  42 , the sixth terminal is electrically connected to the end V− of the external power source Po, which is connected to the third terminal through a corresponding jumper connection of the male plug  34 , and one terminal of the brake  6  is also connected to the third terminal. In addition, the first terminal is electrically connected to the end AC_IN of the external power source Po, which is connected to the fourth terminal through a corresponding jumper connection of the male plug  34  and then to the input end AC 220  of a power supply transformer (not shown in the figure) so as to electrically energize the entire system. 
     On the other hand, as shown in  FIG.  4   , the DC voltage output end OD 1  of the rectifier  5  is electrically coupled to the end V− of the external power source Po, and the other DC voltage output end OD 2  of the rectifier  5  is electrically coupled to the brake  6  through the contactor  2 . Accordingly, the power obtained after performing full-wave rectification by the rectifier  5  is applied to the brake  6 . In this embodiment, the voltage of the output power obtained by performing full-wave rectification on the 230V AC power source by the rectifier  5  is about 207V. 
     As in the embodiment of the single-phase system described above, after the male plug  34  of the door operator motor M is inserted into the female socket  42  (i.e. the connection of the low-voltage connector  4  is completed), the external power source Po electrically energizes the entire door operator system, wherein the ends AC 220  and V− of the external power source Po are electrically connected to the contactor  2 , the rectifier  5  and the brake  6 . 
     Reference is made to  FIG.  4    and  FIG.  5 B .  FIG.  5 B  is an equivalent circuit diagram of the windings of the door operator motor powered by a three-phase power source with a high-voltage. The configuration relevant to the three-phase power source with a high-voltage (e.g. 460V) in this embodiment will be described below. The main difference between the present embodiment and the aforementioned embodiment only lies in the connection configurations of the female sockets  32  and  42 . 
     In the connection terminal part Lm of the female socket  32 , the thirteen terminal to the fifteen terminal are electrically coupled to the first connection terminal T 1 , the second connection terminal T 2  and the third connection terminal T 3  of the load side  22  of the contactor  2  respectively; the twelfth terminal is connected to the ninth terminal through a jumper connection; the eleventh terminal is connected to the eighth terminal through a jumper connection; the tenth terminal is connected to the seven terminal through a jumper connection. 
     Accordingly, after the male plug  34  of the door operator motor M is inserted into the female socket  32 , the first winding M 11  is connected in series with the second winding M 12 , the third winding M 13  is connected in series with the fourth winding M 14 , and the fifth winding M 15  is connected in series with the sixth winding M 16  to form a Y connection through the jumper configuration of the connection terminal part Lm of the female socket  32 . The first connection terminal T 1 , the second connection terminal T 2  and the third connection terminal T 3  are electrically coupled to the three outer connection terminals M 2 , M 3  and M 4  of the Y connection respectively. 
     Furthermore, regarding the power source terminal part Lp of the female socket  32 , the sixth terminal is electrically connected to the end AC 2  of the external power source Po, which is connected to the third terminal through a jumper configuration of the male plug  34 , and one terminal of the brake  6  is also connected to the third terminal. In addition, the first terminal is electrically connected to the end AC_IN of the external power source Po, which is connected to the fourth terminal through a jumper configuration of the male plug  34  and then to the input end AC 460  of a power supply transformer (not shown in the figure) so as to electrically energize the entire system. 
     On the other hand, as shown in  FIG.  4   , in order to enable the brake  6  to be adapted to the three-phase high-voltage AC power source and the three-phase low-voltage AC power source, when the system is connected to the three-phase high-voltage AC power source, the rectifier  5  performs a half-wave rectification, that is, the AC voltage input end IA 2  of the rectifier  5  is electrically coupled to the end AC 2  of the external power source Po. In this embodiment, the voltage of the output power obtained by performing half-wave rectification on the 460V AC power source by the rectifier  5  is about 207V. 
     In summary, the above embodiments provide a single-phase door operator control system and a three-phase door operator control system for a single-phase external power source and a three-phase external power source respectively, and each system is at least compatible with two different voltages, namely a high voltage and a low voltage. The user only needs to insert the male plug  34  of the door operator motor M into the female socket  32  for the high voltage or into the female socket  42  for the low voltage according to the power supply provided at the installation site. 
     Furthermore, after the connection is completed, the external power source Po can electrically energize the entire system. Through the jumper configuration of the female socket  32  or  42 , the windings in the door operator motor M can be connected in a specific way so that the door operator motor M can be powered by the external power source of a high voltage or a low voltage. Moreover, in the present invention, the voltage of the external power supply Po is full-wave rectified or half-wave rectified by the rectifier  5  depending on the connection to the low-voltage connector  3  or the high-voltage connector  4  so that only a brake of a single power supply specification needs to be arranged. It is not necessary to arrange various brakes with different power supply specifications for different input voltages. 
     The preferred embodiments of the present invention are illustrative only, and the claimed inventions are not limited to the details disclosed in the drawings and the specification. Accordingly, it is intended that it have the full scope permitted by the language of the following claims.