CN214411814U - Control cabinet - Google Patents
Control cabinet Download PDFInfo
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- CN214411814U CN214411814U CN202022752818.2U CN202022752818U CN214411814U CN 214411814 U CN214411814 U CN 214411814U CN 202022752818 U CN202022752818 U CN 202022752818U CN 214411814 U CN214411814 U CN 214411814U
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- control
- frequency converter
- cabinet
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- electric
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/242—Home appliances
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/242—Home appliances
- Y04S20/244—Home appliances the home appliances being or involving heating ventilating and air conditioning [HVAC] units
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Abstract
The utility model provides a control cabinet, includes the cabinet body and cabinet door, sets up and is used for gathering and handle feedback signal and output control signal at the internal control scheme of cabinet, control scheme includes weak electric control scheme and forceful electric power control scheme, installs display operation module on the cabinet door the internal first mounting panel and the second mounting panel that are used for installing control scheme of installing install weak electric control scheme on the first mounting panel install strong electric control scheme on the second mounting panel the display operation module that sets up on the cabinet door includes converter panel and smart electric meter, smart electric control module is connected with converter, smart electric meter respectively to accessible smart gateway and external control system communication, and then realize the remote control to the converter operation. The utility model discloses concentrate strong electric control circuit and weak current control circuit and set up at same cabinet internally, make strong electric control circuit and the high-efficient cooperation in coordination of weak current control circuit to but free frequency conversion has reduced the power consumption.
Description
Technical Field
The utility model relates to a central air conditioning control field, concretely relates to switch board.
Background
The central air conditioner is an essential component of modern life, and along with the development of intellectualization and energy conservation of a central air conditioning system, the requirement on the control of a water circulation system is higher and higher, and the requirement on the integration and intelligent control is stronger and stronger. The traditional central air-conditioning circulating water system is controlled by separating strong and weak electricity, power control is provided by a strong cabinet, logic control is provided by a weak electricity cabinet, and a water pump only meets full-power operation and cannot be adjusted by self-frequency conversion no matter how the load is, and the traditional control mode has the defects that firstly, the strong and weak electricity is divided into work, the cooperativity is poor, and the responsibility is not clear; secondly, two sets of control cabinets are needed for one set of water circulation system, the matching degree is poor, and the engineering quantity is large; thirdly, the full-power operation is realized, the energy consumption is large, and the waste is more; fourthly, the fine control performance is low.
Disclosure of Invention
An object of the utility model is to overcome prior art's defect, provide a collect strong and weak electric switch board in an organic whole.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a control cabinet comprises a cabinet body and a cabinet door, wherein a control circuit is installed in the cabinet body and used for collecting and processing feedback signals and outputting control signals, the control circuit comprises a weak electric control circuit and a strong electric control circuit, a display operation module used for operating the control circuit in the cabinet body is installed on the cabinet door, a first installation plate and a second installation plate used for installing the control circuit are installed in the cabinet body, the weak electric control circuit is installed on the first installation plate, the strong electric control circuit is installed on the second installation plate, and the strong electric control circuit comprises a frequency converter; the display operation module arranged on the cabinet door comprises a frequency converter panel and an intelligent electric meter; the intelligent control module is respectively connected with the frequency converter and the intelligent electric meter, and the intelligent control module can communicate with an external control system through an intelligent gateway arranged in the intelligent control module, so that the remote control of the operation of the frequency converter is realized.
Furthermore, the weak electric control circuit also comprises a single-phase circuit breaker, an intelligent control module, a direct-current power supply and a relay;
the single-phase circuit breaker is used for providing power supply protection, the intelligent control module is used for providing logic control and is powered by a direct-current power supply, and the relay is used for controlling starting and stopping of the frequency converter and switching of feedback signals.
Further, the strong electric control circuit further comprises a three-phase circuit breaker, a current transformer and a reactor;
the three-phase circuit breaker is used for providing power supply protection for the frequency converter, and the frequency converter provides variable power supply for electric equipment under the control of the intelligent control module; the current transformer is used for inducing current change, and the reactor is used for eliminating variable frequency harmonic waves.
Further, a display operation module arranged on the cabinet door comprises a frequency converter panel, a knob, an indicator light and an emergency stop button; the frequency converter panel is used for displaying the frequency of the frequency converter; the knob is used for switching a remote control mode and a manual control mode of the frequency converter; the indicator light is used for feeding back the running state; the scram button is quickly turned off in an emergency state.
Further, control scheme is still including installing the maintenance circuit on first mounting panel, first mounting panel sets up on the upper portion of the cabinet body, and single-phase circuit breaker and DC power supply install the upper portion at first mounting panel, the middle part at first mounting panel is installed to intelligent control module and relay, the relay is located intelligent control module's below, is provided with the maintenance socket in fuse, binding post and the maintenance circuit in the below of relay.
Further, the second mounting panel sets up in the lower part of the cabinet body, three-phase circuit breaker figure is a plurality of, and a plurality of three-phase circuit breakers set up on the upper portion of second mounting panel, and current transformer sets up between a plurality of three-phase circuit breakers, and the converter setting is at the middle part of second mounting panel the below of converter sets up the reactor.
Further, smart electric meter sets up on the upper portion of cabinet door, is provided with emergency stop button in smart electric meter's below, the converter panel sets up in the middle part of cabinet door be provided with pilot lamp and knob between converter panel and the emergency stop button, the knob is located the below of pilot lamp.
Furthermore, the frequency converter is switched from a remote control mode to a local control mode by operating the knob, and the knob is matched with the frequency converter panel to carry out the local control.
Furthermore, the intelligent electric meter is in communication connection with the intelligent gateway, and the intelligent gateway is in communication with an external control system through a CH-BUS communication interface or an Ethernet interface and receives and sends operation parameters and instructions.
Further, during remote control, the control circuit realizes automatic control, at the moment, a knob used for switching the control mode of the frequency converter in the display operation module is switched to a remote control position, and a single-phase breaker in the weak electric control circuit is switched on, so that a direct current power supply in the weak electric control circuit outputs direct current to supply power to the intelligent control module and enable the intelligent control module to start working; a three-phase circuit breaker in a strong electric control circuit is in a switching-on position to supply power to a frequency converter, and the frequency converter outputs working voltage to electric equipment; the intelligent control module outputs a control signal to the frequency converter after processing the acquired analog signal, and the frequency converter drives the electric equipment to operate according to the control signal.
The utility model discloses a switch board concentrates strong electric control circuit and weak electric control circuit to set up at same cabinet internally for strong electric control circuit in the cabinet body makes strong electric control circuit and the high-efficient cooperation in coordination of weak electric control circuit by single weak electric control circuit control, and strong and weak electric exclusive cooperation, exclusive linkage, the function is accurate, has realized the control that becomes more meticulous.
In addition, the intelligent electric meter can feed back the power utilization condition of the electric equipment outwards through the intelligent gateway of the intelligent control module, and the remote monitoring of the service condition of the electric equipment can be realized.
Drawings
Fig. 1 is a schematic structural diagram of a control cabinet of the present invention;
fig. 2 is a schematic structural diagram of a control cabinet of the present invention.
Detailed Description
The following describes a specific embodiment of a control cabinet according to the present invention with reference to the embodiments shown in fig. 1 to 2. The present invention is not limited to the description of the following embodiments.
A control cabinet comprises a cabinet body 1 and a cabinet door 2, wherein a control circuit is installed in the cabinet body 1 and used for collecting and processing feedback signals and outputting control signals, the control circuit comprises a weak electric control circuit and a strong electric control circuit, a display operation module used for operating the control circuit in the cabinet body 1 is installed on the cabinet door 2, a first installation plate 11 and a second installation plate 12 used for installing the control circuit are installed in the cabinet body 1, the weak electric control circuit is installed on the first installation plate 11, the strong electric control circuit is installed on the second installation plate 12, and the strong electric control circuit comprises a frequency converter 43; the display operation module arranged on the cabinet door 2 comprises a frequency converter panel 55 and an intelligent electric meter 51; the intelligent control module 33 is respectively connected with the frequency converter 43 and the intelligent electric meter 51, and the intelligent control module 33 can communicate with an external control system through an intelligent gateway 331 arranged in the intelligent control module 33, so as to realize remote control of the operation of the frequency converter 43. The utility model discloses a control cabinet, concentrate strong current control circuit and weak current control circuit and set up in same cabinet body, make the strong current control circuit in the cabinet body control by the single weak current control circuit, make strong current control circuit and weak current control circuit high-efficient cooperative fit, and strong and weak current exclusive cooperation, exclusive linkage, the function is accurate, has realized the fine control; meanwhile, the intelligent control module 33 is configured to realize logic control, so that the frequency can be freely changed, and the energy consumption is reduced.
An embodiment is provided with reference to fig. 1-2, where the control cabinet includes a cabinet body 1 and a cabinet door 2, a control circuit is installed in the cabinet body 1, the control circuit can collect and process signals related to operating parameters fed back by the electrical equipment, and the control circuit can also output control signals to the electrical equipment according to the signals fed back by the electrical equipment and commands input by an external system, and the embodiment is applied to a circulating water system of a central air conditioner, and the electrical equipment is a pump in the system.
The control circuit includes strong electric control circuit, weak current control circuit and maintenance circuit be equipped with the demonstration operation module that is used for operating the internal control circuit of cabinet 1 on cabinet door 2 cabinet 1 is internal to install first mounting panel 11 and second mounting panel 12, and preferred first mounting panel 11 sets up the upper portion at the cabinet body 1, and second mounting panel 12 sets up the lower part at the cabinet body 1, and wherein the weak electric control circuit and the maintenance circuit of control circuit set up on first mounting panel 11, weak electric control circuit includes single-phase circuit breaker 31, relay 34, intelligent control module 33 and for the DC power supply 32 of intelligent control module 33 power supply, and strong electric control circuit includes converter 43, three-phase circuit breaker 41, current transformer 42 and reactor 44 the demonstration operation module that sets up on cabinet door 2 includes converter panel 55, knob 54, smart electric meter 51, An indicator light 53 and an emergency stop button 52.
As shown in fig. 1-2, the single-phase circuit breaker 31 and the dc power supply 32 in the weak electric control line are disposed on the upper portion of the first mounting plate 11, the single-phase circuit breaker 31 is used to provide power protection for the dc power supply 32 and other control circuits, and control the dc power supply 32 to supply power to the intelligent control module 33, in this embodiment, the dc power supply 32 provides 24V dc current for the intelligent control module 33; intelligent control module 33 and relay 34 install the middle part at first mounting panel 11, relay 34 is located intelligent control module 33's below, relay 34 is arranged in the opening of controlling converter 43 and carries out feedback signal's switching under intelligent control module 33's effect, is provided with fuse 35, binding post 36 and maintenance socket 6 in the maintenance circuit in relay 34's below, wherein, fuse 35 takes place when transshipping at the electric current, the fusing is with protection circuit, binding post 36 is used for the external connection, maintenance socket 6 can be for debugging equipment power supply when debugging or overhauing.
The heavy current control circuit of the control circuit is installed on the second installation plate 12, in this embodiment, the number of the three-phase circuit breakers 41 is three, the number of the frequency converters 43 is two, the three-phase circuit breakers 41 are arranged on the upper portion of the second installation plate 12, the two frequency converters 43 are arranged in parallel in the middle of the second installation plate 12, the two frequency converters 43 are connected into the three-phase power circuit through the three-phase circuit breakers 41, the current transformer 42 is arranged between the three-phase circuit breakers 41 for inducing current change, the reactors 44 are arranged below the frequency converters 43, the number of the reactors 44 is two, the reactors 44 are correspondingly arranged below each frequency converter 43, and the reactors 44 are used for eliminating frequency conversion harmonic waves so as to ensure the stability of the power grid. The intelligent control module 33 is respectively connected with the frequency converter 43 and the intelligent electric meter 51, the intelligent control module 33 has the functions of collecting and processing analog signals and digital signals, the intelligent control module 33 is connected with the frequency converter 43 and used for realizing signal exchange, the intelligent control module 33 can communicate with an external control system through the intelligent gateway 331 arranged in the intelligent control module 33, under the control of the external control system, the intelligent control module 33 transmits the collected analog signals and digital signals to the frequency converter 43 after processing, the frequency converter 43 outputs corresponding control signals to the electric equipment, the remote control of the operation of the electric equipment is realized, namely, the control signals are input by the external control system, and the operation is automatically controlled by a control circuit in the cabinet body 1. The frequency converter panel 55 arranged on the cabinet door 2 is used for displaying the frequency of the frequency converter 43, the frequency converter 43 can be switched from a remote control mode to a local control mode by operating the knob 54, and the operation of the electric equipment can be locally controlled by the frequency converter 43 by operating the knob 54 and the frequency converter panel 55; the smart electric meter 51 is used for recording the power consumption and the voltage current value of the control cabinet, that is, the power consumption information of the electric equipment and the control cabinet is recorded and displayed, the smart electric meter 51 can provide the power consumption information of the electric equipment and the control cabinet through the smart gateway 331, so that a system upper computer can look up the power consumption condition of the electric equipment and the control cabinet, preferably, the smart electric meter 51 is in communication connection with the smart gateway 331 through a 485 communication mode, and the power consumption information of the electric equipment provided by the smart electric meter 51 comprises current, voltage and the power consumption of the electric equipment.
The intelligent electric meter 51 is arranged at the upper part of the cabinet door 2, an emergency stop button 52 is arranged below the intelligent electric meter 51, and the emergency stop button 52 is used for stopping the operation of the whole control cabinet when a fault occurs; the frequency converter panel 55 is arranged in the middle of the cabinet door 2, an indicator lamp 53 and a knob 54 are arranged between the frequency converter panel 55 and the emergency stop button 52, the indicator lamp 53 is used for feeding back an operation state, for example, the control cabinet is in a normal operation state, and the indicator lamp 53 is on; when the control cabinet stops operating, the indicator lamp 53 is turned off, and when the control cabinet is in a fault state, the indicator lamp 53 is turned on; the knob 54 is located below the indicator lamp 53, the knob 54 is used for realizing a remote control mode and a local control mode of the control line, and after the knob 54 switches the control line into the local control mode, the knob 54 and the frequency converter panel 55 cooperate to operate the frequency converter 43 to realize local control of the control line.
The specific working process is as follows:
during remote control, the control circuit realizes automatic control, at the moment, the knob 54 is switched to a remote control position, the single-phase circuit breaker 31 is switched on, and the direct current power supply 32 outputs 24V direct current to supply power for the intelligent control module 33 and enable the intelligent control module to start working. The three-phase circuit breaker 41 is in the on position to supply power to the frequency converter 43, and the frequency converter 43 outputs working voltage to the electric equipment. At this time, the intelligent control module 33 may obtain analog signals such as external temperature, humidity, or pipe network pressure through the sensors disposed therein, the analog signals are processed by the intelligent control module 33 and then output optimal control signals to the frequency converter 43, and the frequency converter 43 drives the electric devices to operate according to the control signals. Signals such as operation and fault of the frequency converter 43 and frequency conversion operation of the electric equipment are also accessed to the intelligent control module 33, and all operation/fault signals and pipe network pressure parameters can be transmitted to an external control system through the intelligent gateway 331 of the intelligent control module 33, so that higher-level management is facilitated.
Manual frequency conversion mode
The knob 54 is manually operated to switch to a local control position, the frequency of the frequency converter 43 is adjusted by the knob 54, the frequency converter panel 55 displays the adjusted frequency of the frequency converter 43 and various parameters, and the frequency converter 43 outputs the adjusted frequency to drive the electric equipment, in this example, a pump, to operate.
This scheme adopts the complementary design of two frequency conversion, and unable energy-saving control when avoiding the power frequency each other for the protection, and the simpler power equipment of structure can not break away from control, and the simpler trouble risk rate of electric loop is lower.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (8)
1. The utility model provides a control cabinet, includes the cabinet body (1) and cabinet door (2) install control scheme in the cabinet body (1), control scheme is used for gathering and handles feedback signal and output control signal, control scheme includes weak electric control circuit and strong electric control circuit install the demonstration operation module that is used for operating control scheme in the cabinet body (1) on cabinet door (2), its characterized in that:
a first mounting plate (11) and a second mounting plate (12) for mounting control circuits are mounted in the cabinet body (1), weak electric control circuits are mounted on the first mounting plate (11), the weak electric control circuits comprise intelligent control modules (33), strong electric control circuits are mounted on the second mounting plate (12), and the strong electric control circuits comprise frequency converters (43); the display operation module arranged on the cabinet door (2) comprises a frequency converter panel (55) and an intelligent electric meter (51);
the intelligent control module (33) is respectively connected with the frequency converter (43) and the intelligent electric meter (51), and the intelligent control module (33) can communicate with an external control system through an intelligent gateway (331) arranged in the intelligent control module (33), so that the remote control of the operation of the frequency converter (43) is realized;
the weak electric control circuit further comprises a single-phase circuit breaker (31), a direct current power supply (32) and a relay (34);
the single-phase circuit breaker (31) is used for providing power supply protection, the intelligent control module (33) is used for providing logic control and is powered by the direct-current power supply (32), and the relay (34) is used for controlling the starting and stopping of the frequency converter (43) and switching a feedback signal;
the strong electric control circuit further comprises a three-phase circuit breaker (41), a current transformer (42) and a reactor (44);
the three-phase circuit breaker (41) is used for providing power supply protection for the frequency converter (43), and the frequency converter (43) provides variable power supply for electric equipment under the control of the intelligent control module (33); the current transformer (42) is used for inducing current change, and the reactor (44) is used for eliminating variable frequency harmonic waves.
2. The control cabinet of claim 1, wherein: the display operation module arranged on the cabinet door (2) comprises a frequency converter panel (55), a knob (54), an indicator lamp (53) and an emergency stop button (52); the frequency converter panel (55) is used for displaying the frequency of the frequency converter (43); the knob (54) is used for switching a remote control mode and a manual control mode of the frequency converter (43); the indicator lamp (53) is used for feeding back the running state; the emergency stop button (52) is quickly turned off in an emergency state.
3. The control cabinet of claim 1, wherein: the control scheme is still including installing the maintenance circuit on first mounting panel (11), first mounting panel (11) set up on the upper portion of the cabinet body (1), and single-phase circuit breaker (31) and DC power supply (32) are installed on the upper portion of first mounting panel (11), the middle part in first mounting panel (11) is installed in intelligent control module (33) and relay (34), relay (34) are located the below of intelligent control module (33), are provided with maintenance socket (6) in fuse (35), binding post (36) and the maintenance circuit in relay (34).
4. The control cabinet of claim 1, wherein: the utility model discloses a cabinet, including cabinet body (1), second mounting panel (12) set up the lower part at cabinet body (1), three-phase circuit breaker (41) figure is a plurality of, and a plurality of three-phase circuit breaker (41) set up the upper portion at second mounting panel (12), and current transformer (42) set up between a plurality of three-phase circuit breaker (41), and converter (43) set up the middle part at second mounting panel (12) reactor (44) are set up to the below of converter (43).
5. The control cabinet of claim 2, wherein: the intelligent electric meter (51) is arranged on the upper portion of the cabinet door (2), the emergency stop button (52) is arranged below the intelligent electric meter (51), the frequency converter panel (55) is arranged in the middle of the cabinet door (2), the indicating lamp (53) and the knob (54) are arranged between the frequency converter panel (55) and the emergency stop button (52), and the knob (54) is located below the indicating lamp (53).
6. The control cabinet of claim 2, wherein: the frequency converter (43) is switched from a remote control mode to a local control mode by operating the knob (54), and the local control is carried out by the cooperation of the knob (54) and the frequency converter panel (55).
7. The control cabinet of any one of claims 1-6, wherein: the intelligent electric meter (51) is in communication connection with the intelligent gateway (331), and the intelligent gateway (331) is in communication with an external control system through a CH-BUS communication interface or an Ethernet interface and receives and sends operation parameters and instructions.
8. The control cabinet of claim 7, wherein: during remote control, the control circuit realizes automatic control, at the moment, a knob (54) used for switching the control mode of a frequency converter (43) in the display operation module is switched to a remote control position, a single-phase circuit breaker (31) in the weak electric control circuit is switched on, and a direct current power supply (32) in the weak electric control circuit outputs direct current to supply power to the intelligent control module (33) and enable the intelligent control module to start working; a three-phase circuit breaker (41) in a strong electric control circuit is in a switching-on position to supply power to a frequency converter (43), and the frequency converter (43) outputs working voltage to electric equipment; the intelligent control module (33) processes the acquired analog signals and outputs control signals to the frequency converter (43), and the frequency converter (43) drives the electric equipment to operate according to the control signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022752818.2U CN214411814U (en) | 2020-11-24 | 2020-11-24 | Control cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022752818.2U CN214411814U (en) | 2020-11-24 | 2020-11-24 | Control cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214411814U true CN214411814U (en) | 2021-10-15 |
Family
ID=78035193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022752818.2U Active CN214411814U (en) | 2020-11-24 | 2020-11-24 | Control cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214411814U (en) |
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2020
- 2020-11-24 CN CN202022752818.2U patent/CN214411814U/en active Active
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