CN112628131B - Booster pump variable frequency drive controller - Google Patents

Abstract

The invention discloses a booster pump variable frequency drive controller, which comprises: the shell is cylindrical, and the bottom of the shell is fixedly connected with a plurality of vertical plates which are arranged at equal intervals; the control panel is provided with a control circuit and a screw, and the control circuit comprises a power circuit, a main control circuit, an interface circuit, a protection circuit and a three-phase full-bridge inverter circuit; the power circuit is respectively and electrically connected with the interface circuit, the three-phase inversion full-bridge circuit and the main control circuit, and the main control circuit is respectively and electrically connected with the protection circuit and the three-phase inversion full-bridge circuit; wherein, the casing bottom is equipped with the screw hole with screw assorted, and the control panel passes through the screw and the heat dissipation is glued to be fixed in the casing. The booster pump variable frequency drive controller provided by the invention is matched with the shell through the control panel, so that the requirement of realizing variable frequency drive control on a booster water pump in a space with the size space of less than 77mm in outer diameter and 46mm in height is met, and meanwhile, the efficiency of the controller exceeds 95%. The high-efficiency, energy-saving and variable-frequency control in the field of booster pumps is really realized.

Description

Booster pump variable frequency drive controller

Technical Field

The invention relates to the technical field of variable frequency drive controllers, in particular to a variable frequency drive controller of a booster pump.

Background

In recent years, the trend of energy conservation, environmental protection, intelligence and health of global household appliances is more and more obvious, and the energy-saving, environmental protection, frequency conversion and health household appliances become inevitable choices for the development of the household appliances and gradually serve as a middle-high-end market leading role. First, the market size is further expanded. The energy consumption of household appliances is a main component of the total energy consumption of the household. Under the trend of energy conservation and environmental protection globalization, the high efficiency, energy conservation and environmental protection of household appliances become important indexes concerned by household appliance manufacturers, and the market share of the high efficiency, energy conservation and household appliances is continuously increased. The energy-saving frequency conversion of the household appliance not only saves electricity and saves water and reduces emission in use, but also represents the whole life cycle of design, manufacture, use, scrapping and recovery.

Among the present water pump variable frequency drive controller, still there are following problems:

1. the energy utilization rate is low, and the working efficiency is not good;

2. the size of the variable frequency drive controller is large, which is not beneficial to the structural integration of the motor;

3. the whole machine of the water pump motor has poor heat dissipation performance and short service life.

Based on the above situation, the invention provides a variable frequency drive controller of a booster pump, which can effectively solve the above problems.

Disclosure of Invention

The invention aims to provide a variable-frequency driving controller of a booster pump. The booster pump variable frequency drive controller is simple in structure and convenient to use, and the requirement of realizing variable frequency drive control on a booster water pump in a space with the outer diameter smaller than 77mm and the height of 46mm in size space is met through the matching arrangement of the control plate and the shell. The full-automatic frequency control system not only meets the wide power supply voltage input range of input voltage 85V-265VAC, but also realizes the stepless variable frequency speed regulation of the highest 1950Rpm under the pressure of 0-150Psi, the maximum input power is less than 150W, the complete machine meets the requirement of being randomly used within the range of the highest temperature of 105 degrees, and meanwhile, the efficiency of the controller exceeds 95 percent. The high-efficiency, energy-saving and variable-frequency control in the field of booster pumps is really realized.

The invention is realized by the following technical scheme:

a booster pump variable frequency drive controller comprising:

the shell is cylindrical, and the bottom of the shell is fixedly connected with a plurality of vertical plates which are arranged at equal intervals;

the control circuit comprises a power circuit, a main control circuit, an interface circuit, a protection circuit and a three-phase full-bridge inverter circuit; the main control circuit comprises a single chip circuit, a temperature sampling circuit, a current sampling circuit and a voltage sampling circuit; the single chip microcomputer circuit is respectively and electrically connected with the temperature sampling circuit, the current sampling circuit and the voltage sampling circuit, the power supply circuit is respectively and electrically connected with the interface circuit, the three-phase inversion full-bridge circuit and the main control circuit, and the main control circuit is respectively and electrically connected with the protection circuit and the three-phase inversion full-bridge circuit; the three-phase full-bridge inverter circuit comprises three combined tubes, and each combined tube is tightly arranged on the control board;

the bottom of the shell is provided with a threaded hole matched with the screw, and the control panel is fixed in the shell through the screw and the heat dissipation glue.

The invention aims to provide a variable-frequency driving controller of a booster pump. The booster pump variable frequency drive controller is simple in structure and convenient to use, and the requirement of realizing variable frequency drive control on a booster water pump in a space with the outer diameter smaller than 77mm and the height of 46mm in size space is met through the matching arrangement of the control plate and the shell. The full-automatic frequency control system not only meets the wide power supply voltage input range of input voltage 85V-265VAC, but also realizes the stepless variable frequency speed regulation of the highest 1950Rpm under the pressure of 0-150Psi, the maximum input power is less than 150W, the complete machine meets the requirement of being randomly used within the range of the highest temperature of 105 degrees, and meanwhile, the efficiency of the controller exceeds 95 percent. The high-efficiency, energy-saving and variable-frequency control in the field of booster pumps is really realized.

Preferably, the controller has an outer diameter of 77mm and a height of 46 mm.

Preferably, the heat dissipation glue is an electronic special glue with a bearing temperature range of-60 ℃ to 250 ℃.

Preferably, the power circuit includes an ac/dc converter U1, a first tab terminal N1, a second tab terminal N2, a third tab terminal N3, a fuse F1, a magnetic ring L1, a rectifier DB1, a precision voltage stabilization module Q1, an optocoupler P1, a transformer T1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R12, a fourteenth resistor R12, a fifteenth resistor R12, a sixteenth resistor R12, a seventeenth resistor R12, a first capacitor C12, a second capacitor C12, a third capacitor C12, a fourth capacitor C12, a sixth capacitor C12, a seventh capacitor C12, a ninth capacitor C12, a twelfth capacitor C12, a seventh capacitor C12, a twelfth capacitor C12, a seventh capacitor C12, a, A thirteenth capacitor C13, a fourteenth capacitor C14, a fifteenth capacitor C15, a first diode D1, a second diode D2, a third diode D3, and a fourth diode D4;

the first insert terminal N1 is electrically connected to one end of a fuse F1, the other end of the fuse F1 is electrically connected to one end of a first capacitor C1 and a 4-pin of a magnetic ring L1, the second insert terminal N2 is electrically connected to the other end of a first capacitor C1 and a 1-pin of a magnetic ring L1, a 3-pin of the magnetic ring L1 is electrically connected to one end of a second capacitor C2 and a 2-pin of a rectifier DB1, the other end of the second capacitor C2 is electrically connected to one end of a third capacitor C3 and a third insert terminal N3, a 2-pin of the magnetic ring L1 is electrically connected to the other end of a third capacitor C3 and a 3-pin of a rectifier DB1, a 1-pin of the rectifier DB1 is electrically connected to a fourth capacitor C4, a fifth capacitor C4, a sixth capacitor C4, a seventh capacitor C4, a first resistor R4 and a 1-pin of a transformer T4, and a fourth capacitor C4, the other ends of the sixth capacitor C6 and the first resistor R1 are electrically connected to one end of a first diode D1, the other end of the first diode D1 is electrically connected to one end of a third resistor R3, the other end of the third resistor R3 is electrically connected to the 3-pin of a transformer T1 and the 5-pin and 6-pin of an ac/dc converter U1, respectively, the 1-pin of the ac/dc converter U1 is electrically connected to one end of a tenth resistor R10, the other end of the tenth resistor R10 is electrically connected to one end of a ninth resistor R9, one end of a twelfth capacitor C12 and the 2-pin of an ac/dc converter U1, the other end of the ninth resistor R9 is electrically connected to one end of a fourth diode D4, the other end of the fourth diode D4 is electrically connected to the 7-pin of the transformer T1, the 3-pin of the ac/dc converter U1 is electrically connected to one end of a thirteenth capacitor C13 and the 4-pin of an optocoupler P1, respectively, and the other end of the thirteenth capacitor C13 is electrically connected to the 3-pin of a P1, the 4 feet of the alternating current-direct current converter U1 are respectively and electrically connected with one end of an eleventh resistor R11 and one end of a twelfth resistor R12, the other end of the eleventh resistor R11 is electrically connected with the other end of a twelfth resistor R12, the 2 feet of the transformer T1 are respectively and electrically connected with one end of an eighth capacitor C8 and one end of a second diode D2, the other end of an eighth capacitor C8 is electrically connected with one end of a second resistor R2, the other end of the second resistor R2 is respectively and electrically connected with the other ends of a second diode D2, a seventh capacitor C7, a ninth capacitor C9, a fourth resistor R4, a fifth resistor R5 and one end of a sixth resistor R6, the 4 feet of the transformer T1 are respectively and electrically connected with one end of a ninth capacitor C9, a fourth resistor R4, a fifth resistor R5 and the other end of a sixth resistor R6, the 6 feet of the transformer T1 are respectively and electrically connected with one end of a third diode D3 and one end of a tenth capacitor C10, the other end of a tenth capacitor C10 is electrically connected with an eighteen R18, the other ends of the third diode D3 and the eighteenth resistor R18 are respectively and electrically connected with one ends of an eleventh capacitor C11, a seventh resistor R7, an eighth resistor R8 and a fourteenth resistor R14, the pin 8 of the transformer T1 is electrically connected with the other ends of the eleventh capacitor C11 and the eighth resistor R8 respectively, the other end of the seventh resistor R7 is respectively and electrically connected with pin 1 of the optocoupler P1 and one end of the thirteenth resistor R13, the 2 pins of the optical coupler P1 are respectively and electrically connected with the other end of the thirteenth resistor R13, one end of a thirteenth capacitor C13 and a fourteenth capacitor C14, and the 1 pin of the precision voltage stabilizing module Q1, the 2 pins of the precision voltage stabilizing module Q1 are respectively and electrically connected with the other ends of the fourteenth resistor R14, the fifteenth resistor R15, the sixteenth resistor R16 and the seventeenth resistor R17, and the pin 3 of the precision voltage stabilizing module Q1 is electrically connected with the other ends of the sixteenth resistor R16 and the seventeenth resistor R17 respectively.

Preferably, the single chip microcomputer circuit comprises a single chip microcomputer U2, a sixteenth capacitor C16, a seventeenth capacitor C17, an eighteenth capacitor C18 and a nineteenth capacitor C19;

the pin 9 of the single chip microcomputer U2 is electrically connected with one end of a sixteenth capacitor C16, the other end of the sixteenth capacitor C16 is electrically connected with the pin 10 of the single chip microcomputer U2 and one end of a seventeenth capacitor C17 respectively, the other end of the seventeenth capacitor C17 is electrically connected with the pin 11 of the single chip microcomputer U2, the pin 13 of the single chip microcomputer U2 is electrically connected with a nineteenth capacitor C19, and the pin 23 of the single chip microcomputer U2 is electrically connected with an eighteenth capacitor C18.

Preferably, the temperature sampling circuit comprises an eighteenth resistor R18, a nineteenth resistor R19 and a twentieth capacitor C20;

the eighteenth resistor R18 is electrically connected with the nineteenth resistor R19 and the twentieth capacitor C20 respectively.

Preferably, the current sampling circuit comprises an operational amplifier A1, a twentieth resistor R20, a twenty-first resistor R21, a twenty-second resistor R22, a twenty-third resistor R23, a twenty-fourth resistor R24, a twenty-first capacitor C21, a twenty-second capacitor C22, a twenty-third capacitor C23 and a twenty-fourth capacitor C24;

the operational amplifier A1 has a pin 1 electrically connected to one end of a twenty-first resistor R21, a twenty-second resistor R22 and a twenty-first capacitor C21, the operational amplifier A1 has a pin 3 electrically connected to the other ends of the twenty-first capacitor C21, the twenty-second resistor R22 and the twentieth resistor R20, the twentieth resistor R20 has the other end electrically connected to a twenty-third capacitor C23, the operational amplifier A1 has a pin 2 electrically connected to one ends of a twenty-third resistor R23 and a twenty-fourth resistor R24, the twenty-third resistor R23 has the other end electrically connected to one end of a twenty-second capacitor C22, the twenty-second capacitor C22 has the other end electrically connected to the other end of the twenty-first resistor R21, and the twenty-fourth resistor R24 has the other end electrically connected to a twenty-fourth capacitor C24.

Preferably, the voltage sampling circuit comprises a twenty-fifth resistor R25, a twenty-sixth resistor R26 and a twenty-fifth capacitor C25;

the twenty-fifth resistor R25 is electrically connected with the twenty-sixth resistor R26 and the twenty-fifth capacitor C25 respectively.

Preferably, the three-phase full-bridge inverter circuit comprises a fourth blade terminal N4, a fifth blade terminal N5, a sixth blade terminal N6, a first dc motor driving chip U3, a second dc motor driving chip U4, a third dc motor driving chip U5, a fifth diode D5, a sixth diode D6, a seventh diode D7, an eighth diode D8, a twenty-seventh resistor R27, a twenty-eighth resistor R28, a twenty-ninth resistor R29, a thirty-sixth resistor R30, a twenty-seventh capacitor C26, a twenty-seventh capacitor C27, a twenty-eighth capacitor C28, a twenty-ninth capacitor C29, a thirty capacitor C30, a thirty-eleventh capacitor C31 and a thirty-second capacitor C32;

the first direct current motor driving chip U3 has a pin 1 electrically connected to one end of a thirty-first capacitor C30, an eighth diode D8 and a twenty-seventh resistor R27, the other end of the eighth diode D8 is electrically connected to the other end of a thirty-first capacitor C30, the other end of the twenty-seventh resistor R27 is electrically connected to one end of a fifth diode D5, the other end of the fifth diode D5 is electrically connected to one end of a 17 pin and a twenty-seventh capacitor C27 of the first direct current motor driving chip U3, the other end of the twenty-seventh capacitor C27 is electrically connected to a 9, 10, 11, 12 pins and a fourth tab terminal N4 of the first direct current motor driving chip U3, the 16 pin of the first direct current motor driving chip U3 is electrically connected to 13, 14, 15, 16 pins of the first direct current motor driving chip U3, the 13, 14, 15, 16 pins of the second direct current motor driving chip U4, and the third direct current motor driving chip U5, 14. 15, 16 pins and a twenty-sixth capacitor C26, wherein a pin 17 of the second dc motor driving chip U4 is electrically connected to one end of a sixth diode D6 and one end of a twenty-eighth capacitor C28, respectively, the other end of the sixth diode D6 is electrically connected to one end of a twenty-eighth resistor R28, the other end of the twenty-eighth resistor R28 is electrically connected to pins 1 of a thirty-eleventh capacitor C31 and a second dc motor driving chip U4, respectively, the other end of the twenty-eighth capacitor C28 is electrically connected to pins 9, 10, 11, 12 and a fifth blade terminal N5 of the second dc motor driving chip U4, respectively, the pin 17 of the third dc motor driving chip U5 is electrically connected to one end of a twenty-ninth capacitor C29 and one end of a seventh diode D7, the other end of the seventh diode D7 is electrically connected to one end of a twenty-ninth resistor R29, the other end of the twenty-ninth resistor R29 is electrically connected to a thirty-second capacitor C32 and one end of the third dc motor driving chip U5, the other end of the twenty-ninth resistor R29 is respectively electrically connected with pins 9, 10, 11 and 12 of a third direct current motor driving chip U5 and a sixth plug terminal N6, and pins 6, 7 and 8 of the third direct current motor driving chip U5 are electrically connected with a thirty-second resistor R30.

Compared with the prior art, the invention has the following advantages and beneficial effects:

the booster pump variable frequency drive controller is simple in structure and convenient to use, and the requirement of realizing variable frequency drive control on a booster water pump in a space with the outer diameter smaller than 77mm and the height of 46mm in size space is met through the matching arrangement of the control plate and the shell. The full-automatic frequency control system not only meets the wide power supply voltage input range of input voltage 85V-265VAC, but also realizes the stepless variable frequency speed regulation of the highest 1950Rpm under the pressure of 0-150Psi, the maximum input power is less than 150W, the complete machine meets the requirement of being randomly used within the range of the highest temperature of 105 degrees, and meanwhile, the efficiency of the controller exceeds 95 percent. The high-efficiency, energy-saving and variable-frequency control in the field of booster pumps is really realized.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the housing of the present invention;

FIG. 3 is a schematic structural diagram of the circuit board of the present invention;

FIG. 4 is a schematic bottom view of the circuit board of the present invention;

FIG. 5 is a schematic block diagram of the control circuit of the present invention;

FIG. 6 is a schematic circuit diagram of the power circuit of the present invention;

FIG. 7 is a schematic circuit diagram of the single chip circuit of the present invention;

FIG. 8 is a schematic circuit diagram of the temperature sampling circuit of the present invention;

FIG. 9 is a circuit schematic of the current sampling circuit of the present invention;

FIG. 10 is a circuit schematic of the voltage sampling circuit of the present invention;

fig. 11 is a schematic circuit diagram of the three-phase full-bridge inverter circuit according to the present invention.

Detailed Description

In order that those skilled in the art will better understand the technical solutions of the present invention, the following description of the preferred embodiments of the present invention is provided in conjunction with specific examples, but it should be understood that the drawings are for illustrative purposes only and should not be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.

Technical features (constituent units/elements of the present invention) of the ac-dc converter, the single chip microcomputer, the dc motor driving chip, etc., are all obtained from conventional commercial sources or manufactured by a conventional method if no special description is made, and specific structures, working principles, control modes and spatial arrangement modes that may be involved adopt conventional choices in the field, which should not be regarded as innovative points of the present invention, and will be understood by those skilled in the art, and the patent of the present invention will not be further specifically described.

Example 1:

as shown in fig. 1 to 11, the present invention provides a variable frequency drive controller of a booster pump, comprising:

the shell body 1 is cylindrical, and the bottom of the shell body 1 is fixedly connected with a plurality of vertical plates 11 which are arranged at equal intervals;

the control circuit comprises a control panel 2, wherein a control circuit 21 and a screw 22 are arranged on the control panel 2, and the control circuit 21 comprises a power circuit, a main control circuit, an interface circuit, a protection circuit and a three-phase full-bridge inverter circuit; the main control circuit comprises a single chip circuit, a temperature sampling circuit, a current sampling circuit and a voltage sampling circuit; the single chip microcomputer circuit is respectively and electrically connected with the temperature sampling circuit, the current sampling circuit and the voltage sampling circuit, the power supply circuit is respectively and electrically connected with the interface circuit, the three-phase inversion full-bridge circuit and the main control circuit, and the main control circuit is respectively and electrically connected with the protection circuit and the three-phase inversion full-bridge circuit; the three-phase full-bridge inverter circuit comprises three combined tubes 211, and each combined tube 211 is tightly arranged on the control board 2;

the power circuit comprises an alternating current-to-direct current circuit and a voltage conversion switch power circuit, and the voltage conversion switch power circuit can provide an auxiliary power circuit with 24V/1A and 15V/0.3A outputs.

The main control circuit comprises a PWM input and VSP input interface circuit, the interface circuit can simultaneously meet 2 speed regulation modes of PWM input and VSP speed regulation for simultaneous selection, the PWM input meets the 10% -100% PWM input duty ratio for speed regulation, and the VSP voltage speed regulation meets the 0-5V input voltage range for speed regulation. The protection of overvoltage, over-temperature, over-current, overload, phase loss, step loss and the like of the water pump motor is realized through the temperature sampling circuit, the current sampling circuit and the voltage sampling circuit. The three combined tubes 211 are composed of 6 MOSFETs of the three-phase full-bridge circuit.

The control circuit does not need to adopt Hall components for positioning, and the main control circuit carries out angle estimation of the initial position in a non-inductive FOC control mode.

The bottom of the shell 1 is provided with a threaded hole 12 matched with the screw 22, and the control panel 2 is fixed in the shell 1 through the screw 22 and the heat dissipation glue. The three-phase inverter full-bridge circuit, the main control circuit and the overcurrent, overvoltage, overtemperature, overload and other protection circuits form a main circuit of the frequency conversion controller. Especially, the three-phase inverter full-bridge circuit is a heating source of the whole controller, and the dissipation power design and the heat dissipation design of the three-phase inverter full-bridge circuit determine the heat dissipation of the whole product.

Example 2:

as shown in fig. 1 to 11, the present invention provides a variable frequency drive controller of a booster pump, comprising:

the shell body 1 is cylindrical, and the bottom of the shell body 1 is fixedly connected with a plurality of vertical plates 11 which are arranged at equal intervals;

the control circuit comprises a control panel 2, wherein a control circuit 21 and a screw 22 are arranged on the control panel 2, and the control circuit 21 comprises a power circuit, a main control circuit, an interface circuit, a protection circuit and a three-phase full-bridge inverter circuit; the main control circuit comprises a single chip circuit, a temperature sampling circuit, a current sampling circuit and a voltage sampling circuit; the single chip microcomputer circuit is respectively and electrically connected with the temperature sampling circuit, the current sampling circuit and the voltage sampling circuit, the power supply circuit is respectively and electrically connected with the interface circuit, the three-phase inversion full-bridge circuit and the main control circuit, and the main control circuit is respectively and electrically connected with the protection circuit and the three-phase inversion full-bridge circuit; the three-phase full-bridge inverter circuit comprises three combined tubes 211, and each combined tube 211 is tightly arranged on the control board 2;

the power circuit comprises an alternating current-to-direct current circuit and a voltage conversion switch power circuit, and the voltage conversion switch power circuit can provide an auxiliary power circuit with 24V/1A and 15V/0.3A outputs.

The main control circuit comprises a PWM input and VSP input interface circuit, the interface circuit can simultaneously meet 2 speed regulation modes of PWM input and VSP speed regulation for simultaneous selection, the PWM input meets the 10% -100% PWM input duty ratio for speed regulation, and the VSP voltage speed regulation meets the 0-5V input voltage range for speed regulation. The protection of overvoltage, over-temperature, over-current, overload, phase loss, step loss and the like of the water pump motor is realized through the temperature sampling circuit, the current sampling circuit and the voltage sampling circuit. The three combined tubes 211 are composed of 6 MOSFETs of the three-phase full-bridge circuit.

The control circuit does not need to adopt Hall components for positioning, and the main control circuit carries out angle estimation of the initial position in a non-inductive FOC control mode.

The bottom of the shell 1 is provided with a threaded hole 12 matched with the screw 22, and the control panel 2 is fixed in the shell 1 through the screw 22 and the heat dissipation glue. The three-phase inverter full-bridge circuit, the main control circuit and the overcurrent, overvoltage, overtemperature, overload and other protection circuits form a main circuit of the frequency conversion controller. Especially, the three-phase inverter full-bridge circuit is a heating source of the whole controller, and the dissipation power design and the heat dissipation design of the three-phase inverter full-bridge circuit determine the heat dissipation of the whole product.

Further, in another embodiment, the controller has an outer diameter of 77mm and a height of 46 mm.

Due to the circuit arrangement and the structure integrated design of the circuit board, the integral size of the variable frequency drive controller is controlled within the range of 77mm in outer diameter and 46mm in height on the premise of not influencing heat dissipation, and the integral integration of a motor of the booster pump is facilitated.

Further, in another embodiment, the heat dissipation glue is an electronic special glue with a temperature range of-60 ℃ to 250 ℃.

Further, in another embodiment, the power circuit includes an ac/dc converter U1, a first tab terminal N1, a second tab terminal N2, a third tab terminal N3, a fuse F1, a magnetic ring L1, a rectifier DB1, a precision voltage stabilizing module Q1, an optocoupler P1, a transformer T1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, a fifteenth resistor R14, a sixteenth resistor R14, a seventeenth resistor R14, a first capacitor C14, a second capacitor C14, a third capacitor C14, a fourth capacitor C14, a fifth capacitor C14, a sixth capacitor C14, a ninth capacitor C, A twelfth capacitor C12, a thirteenth capacitor C13, a fourteenth capacitor C14, a fifteenth capacitor C15, a first diode D1, a second diode D2, a third diode D3, and a fourth diode D4;

the first insert terminal N1 is electrically connected to one end of a fuse F1, the other end of the fuse F1 is electrically connected to one end of a first capacitor C1 and a 4-pin of a magnetic ring L1, the second insert terminal N2 is electrically connected to the other end of a first capacitor C1 and a 1-pin of a magnetic ring L1, a 3-pin of the magnetic ring L1 is electrically connected to one end of a second capacitor C2 and a 2-pin of a rectifier DB1, the other end of the second capacitor C2 is electrically connected to one end of a third capacitor C3 and a third insert terminal N3, a 2-pin of the magnetic ring L1 is electrically connected to the other end of a third capacitor C3 and a 3-pin of a rectifier DB1, a 1-pin of the rectifier DB1 is electrically connected to a fourth capacitor C4, a fifth capacitor C4, a sixth capacitor C4, a seventh capacitor C4, a first resistor R4 and a 1-pin of a transformer T4, and a fourth capacitor C4, the other ends of the sixth capacitor C6 and the first resistor R1 are electrically connected to one end of a first diode D1, the other end of the first diode D1 is electrically connected to one end of a third resistor R3, the other end of the third resistor R3 is electrically connected to the 3-pin of a transformer T1 and the 5-pin and 6-pin of an ac/dc converter U1, respectively, the 1-pin of the ac/dc converter U1 is electrically connected to one end of a tenth resistor R10, the other end of the tenth resistor R10 is electrically connected to one end of a ninth resistor R9, one end of a twelfth capacitor C12 and the 2-pin of an ac/dc converter U1, the other end of the ninth resistor R9 is electrically connected to one end of a fourth diode D4, the other end of the fourth diode D4 is electrically connected to the 7-pin of the transformer T1, the 3-pin of the ac/dc converter U1 is electrically connected to one end of a thirteenth capacitor C13 and the 4-pin of an optocoupler P1, respectively, and the other end of the thirteenth capacitor C13 is electrically connected to the 3-pin of a P1, the 4 feet of the alternating current-direct current converter U1 are respectively and electrically connected with one end of an eleventh resistor R11 and one end of a twelfth resistor R12, the other end of the eleventh resistor R11 is electrically connected with the other end of a twelfth resistor R12, the 2 feet of the transformer T1 are respectively and electrically connected with one end of an eighth capacitor C8 and one end of a second diode D2, the other end of an eighth capacitor C8 is electrically connected with one end of a second resistor R2, the other end of the second resistor R2 is respectively and electrically connected with the other ends of a second diode D2, a seventh capacitor C7, a ninth capacitor C9, a fourth resistor R4, a fifth resistor R5 and one end of a sixth resistor R6, the 4 feet of the transformer T1 are respectively and electrically connected with one end of a ninth capacitor C9, a fourth resistor R4, a fifth resistor R5 and the other end of a sixth resistor R6, the 6 feet of the transformer T1 are respectively and electrically connected with one end of a third diode D3 and one end of a tenth capacitor C10, the other end of a tenth capacitor C10 is electrically connected with an eighteen R18, the other ends of the third diode D3 and the eighteenth resistor R18 are respectively and electrically connected with one ends of an eleventh capacitor C11, a seventh resistor R7, an eighth resistor R8 and a fourteenth resistor R14, the pin 8 of the transformer T1 is electrically connected with the other ends of the eleventh capacitor C11 and the eighth resistor R8 respectively, the other end of the seventh resistor R7 is respectively and electrically connected with pin 1 of the optocoupler P1 and one end of the thirteenth resistor R13, the 2 pins of the optical coupler P1 are respectively and electrically connected with the other end of the thirteenth resistor R13, one end of a thirteenth capacitor C13 and a fourteenth capacitor C14, and the 1 pin of the precision voltage stabilizing module Q1, the 2 pins of the precision voltage stabilizing module Q1 are respectively and electrically connected with the other ends of the fourteenth resistor R14, the fifteenth resistor R15, the sixteenth resistor R16 and the seventeenth resistor R17, and the pin 3 of the precision voltage stabilizing module Q1 is electrically connected with the other ends of the sixteenth resistor R16 and the seventeenth resistor R17 respectively.

Further, in another embodiment, the single chip microcomputer circuit comprises a single chip microcomputer U2, a sixteenth capacitor C16, a seventeenth capacitor C17, an eighteenth capacitor C18 and a nineteenth capacitor C19;

the pin 9 of the single chip microcomputer U2 is electrically connected with one end of a sixteenth capacitor C16, the other end of the sixteenth capacitor C16 is electrically connected with the pin 10 of the single chip microcomputer U2 and one end of a seventeenth capacitor C17 respectively, the other end of the seventeenth capacitor C17 is electrically connected with the pin 11 of the single chip microcomputer U2, the pin 13 of the single chip microcomputer U2 is electrically connected with a nineteenth capacitor C19, and the pin 23 of the single chip microcomputer U2 is electrically connected with an eighteenth capacitor C18.

Further, in another embodiment, the temperature sampling circuit includes an eighteenth resistor R18, a nineteenth resistor R19, and a twentieth capacitor C20;

the eighteenth resistor R18 is electrically connected with the nineteenth resistor R19 and the twentieth capacitor C20 respectively.

Further, in another embodiment, the current sampling circuit includes an operational amplifier a1, a twentieth resistor R20, a twenty-first resistor R21, a twenty-second resistor R22, a twenty-third resistor R23, a twenty-fourth resistor R24, a twenty-first capacitor C21, a twenty-second capacitor C22, a twenty-third capacitor C23, and a twenty-fourth capacitor C24;

the operational amplifier A1 has a pin 1 electrically connected to one end of a twenty-first resistor R21, a twenty-second resistor R22 and a twenty-first capacitor C21, the operational amplifier A1 has a pin 3 electrically connected to the other ends of the twenty-first capacitor C21, the twenty-second resistor R22 and the twentieth resistor R20, the twentieth resistor R20 has the other end electrically connected to a twenty-third capacitor C23, the operational amplifier A1 has a pin 2 electrically connected to one ends of a twenty-third resistor R23 and a twenty-fourth resistor R24, the twenty-third resistor R23 has the other end electrically connected to one end of a twenty-second capacitor C22, the twenty-second capacitor C22 has the other end electrically connected to the other end of the twenty-first resistor R21, and the twenty-fourth resistor R24 has the other end electrically connected to a twenty-fourth capacitor C24.

Further, in another embodiment, the voltage sampling circuit includes a twenty-fifth resistor R25, a twenty-sixth resistor R26, and a twenty-fifth capacitor C25;

the twenty-fifth resistor R25 is electrically connected with the twenty-sixth resistor R26 and the twenty-fifth capacitor C25 respectively.

Further, in another embodiment, the three-phase full-bridge inverter circuit includes a fourth blade terminal N4, a fifth blade terminal N5, a sixth blade terminal N6, a first dc motor driving chip U3, a second dc motor driving chip U4, a third dc motor driving chip U5, a fifth diode D5, a sixth diode D6, a seventh diode D7, an eighth diode D8, a twenty-seventh resistor R27, a twenty-eighth resistor R28, a twenty-ninth resistor R29, a thirty-sixth resistor R30, a twenty-seventh capacitor C26, a twenty-seventh capacitor C27, a twenty-eighth capacitor C28, a twenty-ninth capacitor C29, a thirty-seventh capacitor C30, a thirty-eleventh capacitor C31, and a thirty-second capacitor C32;

the first direct current motor driving chip U3 has a pin 1 electrically connected to one end of a thirty-first capacitor C30, an eighth diode D8 and a twenty-seventh resistor R27, the other end of the eighth diode D8 is electrically connected to the other end of a thirty-first capacitor C30, the other end of the twenty-seventh resistor R27 is electrically connected to one end of a fifth diode D5, the other end of the fifth diode D5 is electrically connected to one end of a 17 pin and a twenty-seventh capacitor C27 of the first direct current motor driving chip U3, the other end of the twenty-seventh capacitor C27 is electrically connected to a 9, 10, 11, 12 pins and a fourth tab terminal N4 of the first direct current motor driving chip U3, the 16 pin of the first direct current motor driving chip U3 is electrically connected to 13, 14, 15, 16 pins of the first direct current motor driving chip U3, the 13, 14, 15, 16 pins of the second direct current motor driving chip U4, and the third direct current motor driving chip U5, 14. 15, 16 pins and a twenty-sixth capacitor C26, wherein a pin 17 of the second dc motor driving chip U4 is electrically connected to one end of a sixth diode D6 and one end of a twenty-eighth capacitor C28, respectively, the other end of the sixth diode D6 is electrically connected to one end of a twenty-eighth resistor R28, the other end of the twenty-eighth resistor R28 is electrically connected to pins 1 of a thirty-eleventh capacitor C31 and a second dc motor driving chip U4, respectively, the other end of the twenty-eighth capacitor C28 is electrically connected to pins 9, 10, 11, 12 and a fifth blade terminal N5 of the second dc motor driving chip U4, respectively, the pin 17 of the third dc motor driving chip U5 is electrically connected to one end of a twenty-ninth capacitor C29 and one end of a seventh diode D7, the other end of the seventh diode D7 is electrically connected to one end of a twenty-ninth resistor R29, the other end of the twenty-ninth resistor R29 is electrically connected to a thirty-second capacitor C32 and one end of the third dc motor driving chip U5, the other end of the twenty-ninth resistor R29 is respectively electrically connected with pins 9, 10, 11 and 12 of a third direct current motor driving chip U5 and a sixth plug terminal N6, and pins 6, 7 and 8 of the third direct current motor driving chip U5 are electrically connected with a thirty-second resistor R30.

According to the description and the drawings of the invention, a person skilled in the art can easily manufacture or use the variable frequency drive controller of the booster pump, and can generate the positive effects recorded in the invention.

Unless otherwise specified, in the present invention, if there is an orientation or positional relationship indicated by terms of "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.

Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass, for example, being fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.

Claims (8)

1. A booster pump variable frequency drive controller, comprising:

the shell (1), the said shell (1) is cylindrical, and the bottom connects with several risers (11) set up equidistantly fixedly;

the control circuit comprises a control board (2), wherein a control circuit (21) and a screw (22) are arranged on the control board (2), and the control circuit (21) comprises a power circuit, a main control circuit, an interface circuit, a protection circuit and a three-phase full-bridge inverter circuit; the main control circuit comprises a single chip circuit, a temperature sampling circuit, a current sampling circuit and a voltage sampling circuit; the single chip microcomputer circuit is respectively and electrically connected with the temperature sampling circuit, the current sampling circuit and the voltage sampling circuit, the power supply circuit is respectively and electrically connected with the interface circuit, the three-phase inversion full-bridge circuit and the main control circuit, and the main control circuit is respectively and electrically connected with the protection circuit and the three-phase inversion full-bridge circuit; the three-phase full-bridge inverter circuit comprises three combined tubes (211), and each combined tube (211) is tightly arranged on the control board (2);

the bottom of the shell (1) is provided with a threaded hole (12) matched with the screw (22), and the control panel (2) is fixed in the shell (1) through the screw (22) and the heat dissipation glue;

the three-phase full-bridge inverter circuit comprises a fourth blade terminal N4, a fifth blade terminal N5, a sixth blade terminal N6, a first direct-current motor driving chip U3, a second direct-current motor driving chip U4, a third direct-current motor driving chip U5, a fifth diode D5, a sixth diode D6, a seventh diode D7, an eighth diode D8, a twenty-seventh resistor R27, a twenty-eighth resistor R28, a twenty-ninth resistor R29, a thirty resistor R30, a twenty-sixth capacitor C26, a twenty-seventh capacitor C27, a twenty-eighth capacitor C28, a twenty-ninth capacitor C29, a thirty capacitor C30, a thirty-eleventh capacitor C31 and a thirty-second capacitor C32;

the first direct current motor driving chip U3 has a pin 1 electrically connected to one end of a thirty-first capacitor C30, an eighth diode D8 and a twenty-seventh resistor R27, the other end of the eighth diode D8 is electrically connected to the other end of a thirty-first capacitor C30, the other end of the twenty-seventh resistor R27 is electrically connected to one end of a fifth diode D5, the other end of the fifth diode D5 is electrically connected to one end of a 17 pin and a twenty-seventh capacitor C27 of the first direct current motor driving chip U3, the other end of the twenty-seventh capacitor C27 is electrically connected to a 9, 10, 11, 12 pins and a fourth tab terminal N4 of the first direct current motor driving chip U3, the 16 pin of the first direct current motor driving chip U3 is electrically connected to 13, 14, 15, 16 pins of the first direct current motor driving chip U3, the 13, 14, 15, 16 pins of the second direct current motor driving chip U4, and the third direct current motor driving chip U5, 14. 15, 16 pins and a twenty-sixth capacitor C26, wherein a pin 17 of the second dc motor driving chip U4 is electrically connected to one end of a sixth diode D6 and one end of a twenty-eighth capacitor C28, respectively, the other end of the sixth diode D6 is electrically connected to one end of a twenty-eighth resistor R28, the other end of the twenty-eighth resistor R28 is electrically connected to pins 1 of a thirty-eleventh capacitor C31 and a second dc motor driving chip U4, respectively, the other end of the twenty-eighth capacitor C28 is electrically connected to pins 9, 10, 11, 12 and a fifth blade terminal N5 of the second dc motor driving chip U4, respectively, the pin 17 of the third dc motor driving chip U5 is electrically connected to one end of a twenty-ninth capacitor C29 and one end of a seventh diode D7, the other end of the seventh diode D7 is electrically connected to one end of a twenty-ninth resistor R29, the other end of the twenty-ninth resistor R29 is electrically connected to a thirty-second capacitor C32 and one end of the third dc motor driving chip U5, the other end of the twenty-ninth capacitor C29 is electrically connected to pins 9, 10, 11 and 12 of a third dc motor driving chip U5 and a sixth tab terminal N6, and pins 6, 7 and 8 of the third dc motor driving chip U5 are electrically connected to a thirty-second resistor R30.

2. A booster pump variable frequency drive controller as claimed in claim 1, wherein: the controller has an outer diameter of 77mm and a height of 46 mm.

3. A booster pump variable frequency drive controller as claimed in claim 1, wherein: the heat dissipation glue is a special glue for electronics, and the bearing temperature range of the glue is-60-250 ℃.

4. A booster pump variable frequency drive controller as claimed in claim 1, wherein: the power supply circuit comprises an alternating current-direct current converter U1, a first insert terminal N1, a second insert terminal N2, a third insert terminal N3, a fuse F1, a magnetic ring L1, a rectifier DB1, a precision voltage stabilizing module Q1, an optocoupler P1, a transformer T1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R10, a twelfth resistor R10, a thirteenth resistor R10, a fourteenth resistor R10, a fifteenth resistor R10, a sixteenth resistor R10, a seventeenth resistor R10, a first capacitor C10, a second capacitor C10, a third capacitor C10, a fourth capacitor C10, a fifth capacitor C10, a sixth capacitor C72, a seventh capacitor C10, a ninth capacitor C10, a twelfth capacitor C10, a ninth capacitor C10, a eleventh capacitor C10, a twelfth capacitor C10, a eleventh capacitor C10, a twelfth capacitor C10, a, A fourteenth capacitor C14, a fifteenth capacitor C15, a first diode D1, a second diode D2, a third diode D3 and a fourth diode D4;

the first insert terminal N1 is electrically connected to one end of a fuse F1, the other end of the fuse F1 is electrically connected to one end of a first capacitor C1 and a 4-pin of a magnetic ring L1, the second insert terminal N2 is electrically connected to the other end of a first capacitor C1 and a 1-pin of a magnetic ring L1, a 3-pin of the magnetic ring L1 is electrically connected to one end of a second capacitor C2 and a 2-pin of a rectifier DB1, the other end of the second capacitor C2 is electrically connected to one end of a third capacitor C3 and a third insert terminal N3, a 2-pin of the magnetic ring L1 is electrically connected to the other end of a third capacitor C3 and a 3-pin of a rectifier DB1, a 1-pin of the rectifier DB1 is electrically connected to a fourth capacitor C4, a fifth capacitor C4, a sixth capacitor C4, a seventh capacitor C4, a first resistor R4 and a 1-pin of a transformer T4, and a fourth capacitor C4, the other ends of the sixth capacitor C6 and the first resistor R1 are electrically connected to one end of a first diode D1, the other end of the first diode D1 is electrically connected to one end of a third resistor R3, the other end of the third resistor R3 is electrically connected to the 3-pin of a transformer T1 and the 5-pin and 6-pin of an ac/dc converter U1, respectively, the 1-pin of the ac/dc converter U1 is electrically connected to one end of a tenth resistor R10, the other end of the tenth resistor R10 is electrically connected to one end of a ninth resistor R9, one end of a twelfth capacitor C12 and the 2-pin of an ac/dc converter U1, the other end of the ninth resistor R9 is electrically connected to one end of a fourth diode D4, the other end of the fourth diode D4 is electrically connected to the 7-pin of the transformer T1, the 3-pin of the ac/dc converter U1 is electrically connected to one end of a thirteenth capacitor C13 and the 4-pin of an optocoupler P1, respectively, and the other end of the thirteenth capacitor C13 is electrically connected to the 3-pin of a P1, the 4 feet of the alternating current-direct current converter U1 are respectively and electrically connected with one end of an eleventh resistor R11 and one end of a twelfth resistor R12, the other end of the eleventh resistor R11 is electrically connected with the other end of a twelfth resistor R12, the 2 feet of the transformer T1 are respectively and electrically connected with one end of an eighth capacitor C8 and one end of a second diode D2, the other end of an eighth capacitor C8 is electrically connected with one end of a second resistor R2, the other end of the second resistor R2 is respectively and electrically connected with the other ends of a second diode D2, a seventh capacitor C7, a ninth capacitor C9, a fourth resistor R4, a fifth resistor R5 and one end of a sixth resistor R6, the 4 feet of the transformer T1 are respectively and electrically connected with one end of a ninth capacitor C9, a fourth resistor R4, a fifth resistor R5 and the other end of a sixth resistor R6, the 6 feet of the transformer T1 are respectively and electrically connected with one end of a third diode D3 and one end of a tenth capacitor C10, the other end of a tenth capacitor C10 is electrically connected with an eighteen R18, the other ends of the third diode D3 and the eighteenth resistor R18 are respectively and electrically connected with one ends of an eleventh capacitor C11, a seventh resistor R7, an eighth resistor R8 and a fourteenth resistor R14, the pin 8 of the transformer T1 is electrically connected with the other ends of the eleventh capacitor C11 and the eighth resistor R8 respectively, the other end of the seventh resistor R7 is respectively and electrically connected with pin 1 of the optocoupler P1 and one end of the thirteenth resistor R13, the 2 pins of the optical coupler P1 are respectively and electrically connected with the other end of the thirteenth resistor R13, one end of the fifteenth capacitor C15 and one end of the fourteenth capacitor C14, and the 1 pin of the precision voltage stabilizing module Q1, the 2 pins of the precision voltage stabilizing module Q1 are respectively and electrically connected with the other ends of the fourteenth resistor R14, the fifteenth resistor R15, the sixteenth resistor R16 and the seventeenth resistor R17, and the pin 3 of the precision voltage stabilizing module Q1 is electrically connected with the other ends of the sixteenth resistor R16 and the seventeenth resistor R17 respectively.

5. A booster pump variable frequency drive controller as claimed in claim 1, wherein: the single chip microcomputer circuit comprises a single chip microcomputer U2, a sixteenth capacitor C16, a seventeenth capacitor C17, an eighteenth capacitor C18 and a nineteenth capacitor C19;

the pin 9 of the single chip microcomputer U2 is electrically connected with one end of a sixteenth capacitor C16, the other end of the sixteenth capacitor C16 is electrically connected with the pin 10 of the single chip microcomputer U2 and one end of a seventeenth capacitor C17 respectively, the other end of the seventeenth capacitor C17 is electrically connected with the pin 11 of the single chip microcomputer U2, the pin 13 of the single chip microcomputer U2 is electrically connected with a nineteenth capacitor C19, and the pin 23 of the single chip microcomputer U2 is electrically connected with an eighteenth capacitor C18.

6. A booster pump variable frequency drive controller as claimed in claim 1, wherein: the temperature sampling circuit comprises an eighteenth resistor R18, a nineteenth resistor R19 and a twentieth capacitor C20;

the eighteenth resistor R18 is electrically connected with the nineteenth resistor R19 and the twentieth capacitor C20 respectively.

7. A booster pump variable frequency drive controller as claimed in claim 1, wherein: the current sampling circuit comprises an operational amplifier A1, a twentieth resistor R20, a twenty-first resistor R21, a twenty-second resistor R22, a twenty-third resistor R23, a twenty-fourth resistor R24, a twenty-first capacitor C21, a twenty-second capacitor C22, a twenty-third capacitor C23 and a twenty-fourth capacitor C24;

the operational amplifier A1 has a pin 1 electrically connected to one end of a twenty-first resistor R21, a twenty-second resistor R22 and a twenty-first capacitor C21, the operational amplifier A1 has a pin 3 electrically connected to the other ends of the twenty-first capacitor C21, the twenty-second resistor R22 and the twentieth resistor R20, the twentieth resistor R20 has the other end electrically connected to a twenty-third capacitor C23, the operational amplifier A1 has a pin 2 electrically connected to one ends of a twenty-third resistor R23 and a twenty-fourth resistor R24, the twenty-third resistor R23 has the other end electrically connected to one end of a twenty-second capacitor C22, the twenty-second capacitor C22 has the other end electrically connected to the other end of the twenty-first resistor R21, and the twenty-fourth resistor R24 has the other end electrically connected to a twenty-fourth capacitor C24.

8. A booster pump variable frequency drive controller as claimed in claim 1, wherein: the voltage sampling circuit comprises a twenty-fifth resistor R25, a twenty-sixth resistor R26 and a twenty-fifth capacitor C25;

the twenty-fifth resistor R25 is electrically connected with the twenty-sixth resistor R26 and the twenty-fifth capacitor C25 respectively.

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