CN217508627U - Two-phase soft cabinet for central air conditioner - Google Patents
Two-phase soft cabinet for central air conditioner Download PDFInfo
- Publication number
- CN217508627U CN217508627U CN202123243694.6U CN202123243694U CN217508627U CN 217508627 U CN217508627 U CN 217508627U CN 202123243694 U CN202123243694 U CN 202123243694U CN 217508627 U CN217508627 U CN 217508627U
- Authority
- CN
- China
- Prior art keywords
- phase
- cabinet
- soft
- thyristor
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Motor And Converter Starters (AREA)
Abstract
The utility model relates to a motor starting cabinet technical field specifically is a double-phase soft cabinet that rises of central air conditioning. The integral structure of the traditional soft starter is broken up, the traditional soft starter is divided into a thyristor, a radiator, a mutual inductor and a soft start cabinet control panel, a transformer, a secondary circuit and a fan are integrated, and the transformer, the secondary circuit and the fan are dispersedly arranged in the cabinet body, so that the size of the cabinet body can be reduced, and the cabinet body is more compact and flexible in arrangement; a keyboard display screen is not equipped, the communication with the unit control PLC and the display screen is realized through an RS485 communication circuit, the parameters of the soft start cabinet are set on the unit display screen for operation, and the cost of the soft start cabinet is reduced; the starting power module is reduced from a three-phase thyristor to a two-phase thyristor, the number of the thyristors is reduced, the size of the cabinet body is further reduced, and the overall cost of the soft-start cabinet is further saved.
Description
Technical Field
The utility model relates to a motor starting cabinet technical field specifically is a double-phase soft cabinet that rises of central air conditioning.
Background
In industrial applications, it is often necessary to use a starting cabinet for starting the motor. The commonly used motor starting cabinet scheme comprises: 1. a star-delta starting cabinet consisting of contactors is used; 2. a frequency conversion starting cabinet using a frequency converter; 3. a soft start cabinet using a soft starter. The star-delta starting cabinet driving motor has secondary current impact in the starting process, and is high in cost, complex in structure and high in failure rate; although the scheme of the variable-frequency starting cabinet driving motor has no secondary current impact in the starting process, the starting current is small, and the starting is smooth, the scheme has high cost; the scheme of the driving motor of the soft start cabinet has the advantages of low cost, simple structure and no impact during starting, and is widely applied.
The traditional soft starting cabinet generally adopts a three-phase thyristor soft starter, the whole soft starter is a whole, the size of the whole soft starter is large, and the size of the electric cabinet is influenced; meanwhile, the three-phase thyristor soft starter has higher outsourcing cost and is inconvenient to popularize.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the two-phase soft cabinet for the central air conditioner is provided, the number of thyristors is reduced, the size of the cabinet body is more compact, and the cost is lower.
In order to solve the technical problem, the utility model adopts the technical scheme that: a two-phase soft start cabinet for a central air conditioner is used for starting a motor 11 of an air conditioner compressor and comprises a circuit breaker 1, a mutual inductor 2, a thyristor 3, a secondary circuit 5, a transformer 6, a soft start cabinet control panel 7, a cabinet body 8 and a fan 9, wherein the thyristor 3 is a two-phase thyristor, a three-phase power distribution incoming line is introduced into the circuit breaker 1, an L1 of the circuit breaker 1 penetrates through a CT1 of the mutual inductor 2 by using a copper bar 10 and then is connected with a first phase of the thyristor 3, and the first phase of the thyristor 3 is connected with a U phase of the motor 11; the L2 of the circuit breaker 1 penetrates through the CT2 of the transformer 2 by using a copper bar 10 and then is connected with the V phase of the motor 11; the L3 of the circuit breaker 1 penetrates through a CT3 of a transformer 2 by using a copper bar 10 and then is connected with a second phase of a thyristor 3, and the second phase of the thyristor 3 is connected with a W phase of a motor 11;
a high-speed signal processor is arranged on the soft start cabinet control board 7, the input end of the high-speed signal processor is electrically connected with a current detection circuit and a voltage detection circuit, and the output end of the high-speed signal processor is electrically connected with a driving and absorbing circuit; the input end of the current detection circuit is electrically connected with the mutual inductor 2; the input end of the voltage detection circuit is electrically connected with a voltage sensor arranged at the wire inlet end of the motor 11; the output of the drive and snubber circuit is electrically connected to the drive pole of the thyristor 3.
Preferably, the system also comprises a unit control PLC and a display screen; the high-speed signal processor is electrically connected with the external terminal circuit and is communicated with the external terminal circuit; the output end of the external terminal circuit is electrically connected with the input end of the secondary circuit 5; the output end of the secondary loop 5 is electrically connected with the input ends of the unit control PLC and the display screen; the unit control PLC and the display screen are electrically connected with the RS485 communication circuit and are communicated with each other; and the RS485 communication circuit is electrically connected with the high-speed signal processor and is communicated with the high-speed signal processor.
Preferably, the bottom of the thyristor 3 is provided with a radiator 4, and the radiator 4 is provided with a temperature sensor; the input end of the high-speed signal processor is electrically connected with a temperature detection circuit, and the input end of the temperature detection circuit is electrically connected with the temperature sensor.
Preferably, the device further comprises an internal power supply circuit; the input of the internal power circuit is connected with the lower end of the breaker 1 and outputs 20V and 10V voltage to the soft start cabinet control board 7 through the transformer 6.
Preferably, the secondary circuit 5 is mounted at the lower part in the cabinet 8.
Preferably, the soft start cabinet control board 7 is installed on the right side in the cabinet body 8.
Preferably, the transformer 6 is mounted at the right upper part in the cabinet 8.
Preferably, the circuit breaker 1, the mutual inductor 2, the thyristor 3 and the soft start cabinet control panel 7 are all arranged in the cabinet body 8.
Preferably, the fan 9 comprises a fan and an air inlet fan, the fan is arranged at the upper left of the cabinet body 8, and the air inlet fan is arranged at the lower right of the cabinet body 8.
Compared with the prior art, the utility model following main advantage has:
1. the utility model provides a double-phase soft cabinet that rises of central air conditioning breaks up traditional soft starter's overall structure, and the split is thyristor, radiator, mutual-inductor, soft start cabinet control panel, and transformer, secondary circuit and fan are integrated again to the split, and the dispersed arrangement is internal in the cabinet, can reduce cabinet body size, makes the cabinet body arrange compacter, nimble.
2. The soft start cabinet is not provided with a keyboard display screen, but is communicated with the unit control PLC and the display screen through an RS485 communication circuit, and the parameter setting of the soft start cabinet is operated on the unit display screen, so that the cost of the soft start cabinet is reduced.
3. The two-phase soft-start cabinet reduces the starting power module from a three-phase thyristor into a two-phase thyristor, the number of the thyristors is reduced, the size of the cabinet body is further reduced, and meanwhile, the overall cost of the soft-start cabinet is further saved.
Drawings
Fig. 1 is an electrical connection diagram of a two-phase soft-start cabinet for a central air conditioner according to the present invention;
fig. 2 is the structural schematic diagram of the two-phase soft cabinet for central air conditioning of the present invention.
In the figure: 1. a circuit breaker; 2. a mutual inductor; 3. a thyristor; 4. a heat sink; 5. a secondary loop; 6. a transformer; 7. A soft start cabinet control panel; 8. a cabinet body; 9. a fan; 10. copper bars; 11. an electric motor.
Detailed Description
In order to make the technical solution of the present invention better understood, the present invention is described in detail below with reference to the accompanying drawings, and the description of the present invention is only exemplary and explanatory, and should not be construed as limiting the scope of the present invention.
Soft cabinet structure
The utility model discloses a double-phase soft cabinet that rises of central air conditioning for start central air conditioning compressor's motor 11, as shown in fig. 1 ~ 2, including circuit breaker 1, mutual-inductor 2, thyristor 3, secondary circuit 5, transformer 6, soft start cabinet control panel 7, the cabinet body 8 and fan 9.
The thyristor 3 is a two-phase thyristor, a three-phase power distribution incoming line is introduced into the circuit breaker 1, an L1 of the circuit breaker 1 penetrates through a CT1 of the transformer 2 by using a copper bar 10 and then is connected with a first phase of the thyristor 3, and the first phase of the thyristor 3 is connected with a U phase of a motor 11; the L2 of the circuit breaker 1 penetrates through the CT2 of the transformer 2 by using a copper bar 10 and then is connected with the V phase of the motor 11; the L3 of the circuit breaker 1 penetrates through a CT3 of a transformer 2 by using a copper bar 10 and then is connected with a second phase of a thyristor 3, and the second phase of the thyristor 3 is connected with a W phase of a motor 11;
a high-speed signal processor is arranged on the soft start cabinet control board 7, the input end of the high-speed signal processor is electrically connected with a current detection circuit and a voltage detection circuit, and the output end of the high-speed signal processor is electrically connected with a driving and absorbing circuit; the input end of the current detection circuit is electrically connected with the mutual inductor 2; the input end of the voltage detection circuit is electrically connected with a voltage sensor arranged at the wire inlet end of the motor 11; the output of the drive and snubber circuit is electrically connected to the drive pole of the thyristor 3.
Furthermore, the two-phase soft lifting cabinet for the central air conditioner of the utility model also comprises a set control PLC and a display screen; the high-speed signal processor is electrically connected with the external terminal circuit and is communicated with the external terminal circuit; the output end of the external terminal circuit is electrically connected with the input end of the secondary circuit 5; the output end of the secondary loop 5 is electrically connected with the input ends of the unit control PLC and the display screen; the unit control PLC and the display screen are electrically connected with the RS485 communication circuit and are communicated with each other; and the RS485 communication circuit is electrically connected with the high-speed signal processor and is communicated with the high-speed signal processor.
Further, a radiator 4 is installed at the bottom of the thyristor 3, the radiator 4 is tightly attached to the bottom of the thyristor 3, and a temperature sensor is arranged on the radiator 4; the input end of the high-speed signal processor is electrically connected with a temperature detection circuit, and the input end of the temperature detection circuit is electrically connected with the temperature sensor.
Furthermore, the two-phase soft-start cabinet for the central air conditioner of the utility model also comprises an internal power circuit; the input of the internal power circuit is connected with the lower end of the breaker 1 and outputs 20V and 10V voltage to the soft start cabinet control panel 7 through the transformer 6.
Furthermore, in the two-phase soft lifting cabinet for the central air conditioner of the present invention, the secondary loop 5 is installed at the lower part inside the cabinet body 8; the soft start cabinet control board 7 is arranged on the right side in the cabinet body 8; the transformer 6 is arranged at the right upper part in the cabinet body 8; the circuit breaker 1, the mutual inductor 2, the thyristor 3 and the soft start cabinet control panel 7 are all arranged in the cabinet body 8.
In addition, fan 9 comprises a fan and an air inlet fan, it installs in the 8 upper left sides of the cabinet body to go out the fan, the air inlet fan is installed in the 8 right side below of the cabinet body, from the cabinet body right side air inlet, the air-out of left side takes away the cabinet body heat.
Second, the working principle
The utility model discloses a two-phase soft cabinet that plays of central air conditioning, the theory of operation as follows:
the used thyristor component is formed by connecting a pair of thyristors in an anti-parallel mode and is respectively connected with each phase of alternating current, the trigger angle of the thyristor is changed, the voltage of the motor is stably increased, the starting current and the starting torque are limited, the generation of instantaneous peak current is avoided, after the starting is finished, the thyristor is completely opened and equivalently is in a straight-through mode, three-phase alternating current passes through the circuit breaker, the thyristor is completely loaded to the motor end, and the motor normally operates.
Current imbalance control in the two-phase soft start control starting process:
because the V phase is not controlled, in the starting process, the voltage applied to the motor is slightly larger in the positive half shaft of the V phase, the output voltage of U, W phases is synchronously increased (by adjusting the conduction angle of a thyristor), the neutral point potential of the motor winding can be increased, the amplitude of the V-phase current is reduced, the voltage applied to the motor is slightly smaller in the negative half shaft of the V phase, the output voltage of U, W phases is synchronously reduced (by adjusting the conduction angle of the thyristor), the neutral point potential of the motor winding can be reduced, the amplitude of the V-phase current is reduced, and the current imbalance control in the starting process is realized.
In summary, the two-phase soft cabinet for the central air conditioner is adopted:
1. the soft starting cabinet breaks up the overall structure of the traditional soft starter, the soft starting cabinet is split into a thyristor, a radiator, a mutual inductor and a soft starting cabinet control panel, a transformer, a secondary circuit and a fan are integrated, the cabinet body is dispersedly arranged in the cabinet body, the size of the cabinet body can be reduced, and the cabinet body is more compact and flexible in arrangement.
2. The soft start cabinet is not provided with a keyboard display screen, but is communicated with the unit control PLC and the display screen through an RS485 communication circuit, and the parameter setting of the soft start cabinet is operated on the unit display screen, so that the cost of the soft start cabinet is reduced.
3. The two-phase soft-start cabinet reduces the starting power module from a three-phase thyristor into a two-phase thyristor, the number of the thyristors is reduced, the size of the cabinet body is further reduced, and meanwhile, the overall cost of the soft-start cabinet is further saved.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the spirit and scope of the present invention, and these changes and modifications fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The utility model provides a two-phase soft cabinet that rises of central air conditioning for start air condition compressor's motor (11), including circuit breaker (1), mutual-inductor (2), thyristor (3), secondary circuit (5), transformer (6), soft start cabinet control panel (7), the cabinet body (8) and fan (9), its characterized in that: the thyristor (3) is a two-phase thyristor, a three-phase power distribution incoming line is introduced into the circuit breaker (1), an L1 of the circuit breaker (1) penetrates through a CT1 of the transformer (2) by using a copper bar (10) and then is connected with a first phase of the thyristor (3), and the first phase of the thyristor (3) is connected with a U phase of a motor (11); the L2 of the circuit breaker (1) penetrates through the CT2 of the transformer (2) by using a copper bar (10) and then is connected with the V phase of the motor (11); the L3 of the circuit breaker (1) penetrates through a CT3 of a transformer (2) by using a copper bar (10) and then is connected with a second phase of a thyristor (3), and the second phase of the thyristor (3) is connected with a W phase of a motor (11);
a high-speed signal processor is arranged on the soft start cabinet control board (7), the input end of the high-speed signal processor is electrically connected with a current detection circuit and a voltage detection circuit, and the output end of the high-speed signal processor is electrically connected with a driving and absorbing circuit; the input end of the current detection circuit is electrically connected with the mutual inductor (2); the input end of the voltage detection circuit is electrically connected with a voltage sensor arranged at the wire inlet end of the motor (11); the output end of the driving and absorbing circuit is electrically connected with the driving pole of the thyristor (3).
2. The two-phase soft-start cabinet for the central air conditioner as claimed in claim 1, wherein: the device also comprises a unit control PLC and a display screen; the high-speed signal processor is electrically connected with the external terminal circuit and is communicated with the external terminal circuit; the output end of the external terminal circuit is electrically connected with the input end of the secondary loop (5); the output end of the secondary loop (5) is electrically connected with the input ends of the unit control PLC and the display screen; the unit control PLC and the display screen are electrically connected with the RS485 communication circuit and are communicated with each other; and the RS485 communication circuit is electrically connected with the high-speed signal processor and is communicated with the high-speed signal processor.
3. The two-phase soft-start cabinet for the central air conditioner as claimed in claim 1, wherein: a radiator (4) is installed at the bottom of the thyristor (3), and a temperature sensor is arranged on the radiator (4); the input end of the high-speed signal processor is electrically connected with a temperature detection circuit, and the input end of the temperature detection circuit is electrically connected with the temperature sensor.
4. The two-phase soft-start cabinet for the central air conditioner as claimed in claim 1, wherein: also includes an internal power supply circuit; the input of the internal power circuit is connected with the lower end of the breaker (1) and outputs 20V and 10V voltages to the soft start cabinet control panel (7) through the transformer (6).
5. The two-phase soft-start cabinet for the central air conditioner as claimed in claim 1, wherein: the secondary loop (5) is arranged at the lower part in the cabinet body (8).
6. The two-phase soft-start cabinet for the central air conditioner as claimed in claim 1, wherein: the soft start cabinet control panel (7) is arranged on the right side in the cabinet body (8).
7. The two-phase soft-start cabinet for the central air conditioner as claimed in claim 1, wherein: the transformer (6) is arranged at the right upper part in the cabinet body (8).
8. The two-phase soft-start cabinet for the central air conditioner as claimed in claim 1, wherein: the circuit breaker (1), the mutual inductor (2), the thyristor (3) and the soft start cabinet control panel (7) are all arranged in the cabinet body (8).
9. The two-phase soft-start cabinet for the central air conditioner as claimed in claim 1, wherein: fan (9) comprise air-out fan and air inlet fan, it installs in cabinet body (8) upper left side to go out the fan, air inlet fan installs in cabinet body (8) right side below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123243694.6U CN217508627U (en) | 2021-12-22 | 2021-12-22 | Two-phase soft cabinet for central air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123243694.6U CN217508627U (en) | 2021-12-22 | 2021-12-22 | Two-phase soft cabinet for central air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217508627U true CN217508627U (en) | 2022-09-27 |
Family
ID=83337431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123243694.6U Active CN217508627U (en) | 2021-12-22 | 2021-12-22 | Two-phase soft cabinet for central air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217508627U (en) |
-
2021
- 2021-12-22 CN CN202123243694.6U patent/CN217508627U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103399228A (en) | Total power aging test circuit for current transformer or frequency transformer | |
| CN100376853C (en) | Compressor unit and refrigerator using the unit | |
| CN101814873B (en) | Soft starter used for continuous frequency conversion and voltage transformation of motor | |
| CN109039205A (en) | SiC device current source type double three-phase permanent-magnetic Synchromous machine drive system and method | |
| KR20230011906A (en) | Anti-dragging system and wind generator set | |
| CN105610351B (en) | A kind of double-motor driving device | |
| CN101378244B (en) | High-voltage motor parallel connection chopping and double-inversion speed-governing energy-saving controller | |
| CN217508627U (en) | Two-phase soft cabinet for central air conditioner | |
| CN112297894A (en) | Integrated vehicle-mounted charger with wide-range output | |
| CN102185399A (en) | Multipolar electric excitation frequency-conversion power generator | |
| CN114584037A (en) | Energy conversion device and vehicle | |
| CN201690400U (en) | Frequency-conversion soft-start hybrid power cabinet | |
| CN207069918U (en) | Static Electro minor voltage-stabilized power supply | |
| CN102832872A (en) | Multi-level matrix frequency converter based speed-regulating control system of mine hoist | |
| CN201690395U (en) | Soft starter for continuous frequency conversion and voltage transformation of motor | |
| CN105471338B (en) | The starter of brushless double-fed motor | |
| CN210958141U (en) | Regulating circuit for reducing loss of two-stage power supply power tube | |
| CN210807129U (en) | Rectifier and low-voltage inverter array power supply system | |
| CN112468056A (en) | Magnetic pole coil excitation adjusting device, system and magnetic pole coil system | |
| CN104270012B (en) | A kind of multiphase frequency converter | |
| CN207184328U (en) | The power-supply system and power cell of a kind of power cell | |
| CN101499757B (en) | Novel speed regulating apparatus for 3 phase high voltage switch reluctance motor | |
| CN214330958U (en) | Direct current brushless fan control system | |
| CN202475351U (en) | High power cross parallel frequency conversion soft-start device | |
| CN211296514U (en) | Automatic switching single-phase and three-phase power conversion device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |