CN210107825U - Refrigerator control panel with power supply phase sequence detection function - Google Patents
Refrigerator control panel with power supply phase sequence detection function Download PDFInfo
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- CN210107825U CN210107825U CN201920921752.XU CN201920921752U CN210107825U CN 210107825 U CN210107825 U CN 210107825U CN 201920921752 U CN201920921752 U CN 201920921752U CN 210107825 U CN210107825 U CN 210107825U
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- contactor
- control panel
- phase sequence
- sequence detection
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Abstract
The utility model relates to a refrigerator control technical field specifically is a take refrigerator control panel of power phase sequence detection function, including circuit breaker, three phase current, contactor and control panel, the contactor includes contactor main contact and contactor coil, the output and the contactor main contact and the control panel electric connection of circuit breaker, contactor main contact is connected to thermorelay's last mouthful, thermorelay's end opening is connected to three phase compressor's input, and the control panel includes phase sequence detection circuit module, MCU controller and switching value output circuit module, is connected with the contactor coil on the contactor main contact, the contactor coil is connected with switching value output circuit module, still is connected with the transformer between circuit breaker and the control panel. This control panel guarantees that the three-phase compressor is in the power-off state when the power phase sequence is wrong, avoids the compressor mistake to start and causes mechanical damage, protection equipment.
Description
Technical Field
The utility model relates to a refrigerator machine control technical field specifically is a take refrigerator control panel of power phase sequence detection function.
Background
A three-phase ac asynchronous motor is an electric drive device that converts electrical energy into mechanical energy. It is mainly composed of stator, rotor and air gap between them. And after the stator winding is led to a three-phase alternating current power supply, a rotating magnetic field is generated and the rotor is cut to obtain torque. The three-phase alternating current asynchronous motor has the advantages of simple structure, reliable operation, low price, strong overload capacity, convenient use, installation and maintenance and the like, and is widely applied to various fields.
The three-phase alternating current asynchronous motor is widely applied to the market due to the advantages of high efficiency, simple structure, low cost, reliable operation, convenient maintenance and the like, and an industrial refrigerator also commonly uses a three-phase compressor. However, the compressor is not allowed to reverse, which may affect the performance of the compressor, damage components and even burn out the motor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a take refrigerator control panel of power phase sequence detection function to solve the problem of proposing among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a take refrigerator control panel of power phase sequence detection function, includes circuit breaker, three phase current, contactor and control panel, and the contactor includes contactor main contact and contactor coil, the output and the contactor main contact and the control panel electric connection of circuit breaker, the contactor main contact is connected to thermorelay's last mouthful, thermorelay's end opening is connected to three phase compressor's input, and the control panel includes phase sequence detection circuit module, MCU controller and switching value output circuit module, is connected with the contactor coil on the contactor main contact, the contactor coil is connected with switching value output circuit module, still is connected with the transformer between circuit breaker and the control panel.
As a further aspect of the present invention: one output of the transformer is connected to the contactor coil.
As a further aspect of the present invention: and the circuit breaker is connected with a U interface, a V interface and a W interface of a three-phase power supply.
As a further aspect of the present invention: and the phase sequence detection circuit module and the switching value output circuit module are electrically connected with the MCU controller.
As a further aspect of the present invention: the circuit breaker is connected with the phase sequence detection circuit module.
Compared with the prior art, the beneficial effects of the utility model are that: the control panel ensures that the three-phase compressor is in a power-off state when the phase sequence of the power supply is wrong, avoids mechanical damage caused by the false start of the three-phase compressor and protects equipment; the phase sequence detection function is integrated on the control panel, and the space and the cost are saved compared with a connection mode of a single phase sequence detector and the control panel without the phase sequence detection function; the control panel can also transmit the phase sequence detection result to a user in a signal mode, thereby saving the troubleshooting time caused by the fact that the refrigerator cannot normally run due to the misconnection of the power phase sequence of the user and improving the working efficiency.
Drawings
Fig. 1 is a schematic structural diagram of the device.
The system comprises a circuit breaker 1, a contactor 2, a contactor main contact 3, a contactor coil 4, a thermal relay 5, a three-phase compressor 6, a transformer 7, a control board 8, a phase sequence detection circuit module, a MCU (micro control unit) controller 9 and a switching value output circuit module 10.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example one
Referring to fig. 1, the embodiment of the utility model provides a take refrigerator control panel of power phase sequence detection function, including circuit breaker 1, three-phase power, contactor and control panel 7, the contactor includes contactor main contact 2 and contactor coil 3, and circuit breaker 1's output and contactor main contact 2 and control panel 7 electric connection, contactor main contact 2 is connected to thermorelay 4's last mouthful, thermorelay 4's end opening is connected to three-phase compressor 5's input, and control panel 7 includes phase sequence detection circuit module 8, MCU controller 9 and switching value output circuit module 10, is connected with contactor coil 3 on the contactor main contact 2, contactor coil 3 is connected with switching value output circuit module 10, still is connected with transformer 6 between circuit breaker 1 and the control panel 7.
One output end of the transformer 6 is connected to the contactor coil 3, and the phase sequence detection circuit module 8 and the switching value output circuit module 10 are both electrically connected with the MCU controller 9. The circuit breaker 1 is connected with a phase sequence detection circuit module 8. The circuit breaker 1 provides overcurrent protection for the whole circuit, the contactor main contact 2 controls the starting and stopping of the three-phase compressor 5 through on-off, and the transformer 6 converts the three-phase power supply voltage to a voltage level suitable for a control panel to provide working power supply for the three-phase compressor. While one of the output terminals V-of the transformer 6 is connected to the contactor coil 3.
After the control board 7 of the refrigerator receives a start command, the control board 7 first detects whether the phase sequence of the power supply is correct by the phase sequence detection circuit module 8, and the detection result is transmitted to the MCU controller 9. If the phase sequence is correct, the MCU controller 9 controls the switching value output circuit module 10 to be closed, so that the contactor coil 3 is connected to the output V + of the transformer 6 through the switching value output circuit module 10, the contactor coil 3 is electrified at the moment, the main contact 2 of the contactor is driven to be closed, and the three-phase compressor 5 is electrified and started; if the phase sequence is wrong, the MCU controller 9 controls the switching value output circuit module 10 to be switched off, so that the contactor coil 3 is in a power-off state, the main contact 2 of the contactor is kept in a switched-off state, and the three-phase compressor 5 cannot be started when being powered on. The control panel ensures that the three-phase compressor is in a power-off state when the power supply phase sequence is wrong, avoids mechanical damage caused by the wrong starting of the compressor and protects equipment; the phase sequence detection function is integrated on the control panel, and the space and the cost are saved compared with a connection mode of a single phase sequence detector and the control panel without the phase sequence detection function; the control panel can also transmit the phase sequence detection result to a user in a signal mode, thereby saving the troubleshooting time caused by the fact that the refrigerator cannot normally run due to the misconnection of the power phase sequence of the user and improving the working efficiency.
The control board 7 ensures that the three-phase compressor is in a power-off state when the power supply phase sequence is wrong, mechanical damage caused by mistaken starting of the three-phase compressor 5 is avoided, and equipment is protected; the phase sequence detection function is integrated on the control board 7, and compared with a connection mode of a single phase sequence detector and a control board without the phase sequence detection function, the space and the cost are saved; the control panel 7 can also transmit the phase sequence detection result to a user in a signal mode, thereby saving the troubleshooting time caused by the fact that the refrigerator cannot normally run due to the misconnection of the power phase sequence of the user and improving the working efficiency.
Example two
On the basis of the first embodiment, the circuit breaker 1 is connected with a U interface, a V interface and a W interface of a three-phase power supply, so that power can be supplied to the device conveniently.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A refrigerator control panel with a power supply phase sequence detection function comprises a circuit breaker (1), a three-phase power supply, a contactor and a control panel (7), wherein the contactor comprises a contactor main contact (2) and a contactor coil (3), the output end of the circuit breaker (1) is electrically connected with the contactor main contact (2) and the control panel (7), characterized in that the main contact (2) of the contactor is connected to the upper port of the thermal relay (4), the lower port of the thermal relay (4) is connected to the input end of the three-phase compressor (5), the control panel (7) comprises a phase sequence detection circuit module (8), an MCU controller (9) and a switching value output circuit module (10), a contactor coil (3) is connected to the main contact (2) of the contactor, the contactor coil (3) is connected with the switching value output circuit module (10), and a transformer (6) is further connected between the circuit breaker (1) and the control panel (7).
2. Refrigerator control board with mains phase sequence detection function according to claim 1, characterized by that one output of the transformer (6) is connected to the contactor coil (3).
3. The refrigerator control board with power supply phase sequence detection function according to claim 1 or 2, wherein the circuit breaker (1) is connected with a U interface, a V interface and a W interface of a three-phase power supply.
4. The refrigerator control board with the power supply phase sequence detection function according to claim 1, wherein the phase sequence detection circuit module (8) and the switching value output circuit module (10) are electrically connected with the MCU controller (9).
5. The refrigerator control board with power supply phase sequence detection function according to claim 1 or 4, characterized in that the circuit breaker (1) is connected with the phase sequence detection circuit module (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920921752.XU CN210107825U (en) | 2019-06-19 | 2019-06-19 | Refrigerator control panel with power supply phase sequence detection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920921752.XU CN210107825U (en) | 2019-06-19 | 2019-06-19 | Refrigerator control panel with power supply phase sequence detection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210107825U true CN210107825U (en) | 2020-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920921752.XU Active CN210107825U (en) | 2019-06-19 | 2019-06-19 | Refrigerator control panel with power supply phase sequence detection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210107825U (en) |
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2019
- 2019-06-19 CN CN201920921752.XU patent/CN210107825U/en active Active
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