CN117279323B - Cabinet cooling system - Google Patents
Cabinet cooling system Download PDFInfo
- Publication number
- CN117279323B CN117279323B CN202311237713.5A CN202311237713A CN117279323B CN 117279323 B CN117279323 B CN 117279323B CN 202311237713 A CN202311237713 A CN 202311237713A CN 117279323 B CN117279323 B CN 117279323B
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- Prior art keywords
- resistor
- operational amplifier
- control unit
- photodiode
- heat dissipation
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- 238000001816 cooling Methods 0.000 title description 6
- 230000017525 heat dissipation Effects 0.000 claims abstract description 31
- 238000005086 pumping Methods 0.000 claims description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20209—Thermal management, e.g. fan control
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Amplifiers (AREA)
Abstract
The invention discloses a cabinet heat dissipation system, which relates to the field of cabinets and comprises cabinets, heat dissipation devices, a control unit and a main control module, wherein the heat dissipation devices and the control unit are arranged in each cabinet according to the number of the cabinets, each heat dissipation device is connected with the control unit and the main control module, the control unit is used for detecting the temperature of the cabinet and feeding back signals to the main control module, and the main control module controls the heat dissipation devices to start. The invention can reduce occupation, and automatically compensate and indicate the temperature signal of the cabinet.
Description
Technical Field
The invention relates to the field of cabinets, in particular to a cabinet heat dissipation system.
Background
Patent publication number CN204466073U discloses a heat dissipation type informatization rack, through being provided with a plurality of crossbeams in the cabinet body, the crossbeam is cut apart the cabinet body inside into corresponding a plurality of parts to set up the roller shutter device on the preceding terminal surface of the cabinet body, cool down through the control roller shutter, but when controlling a plurality of racks, because of every rack need use a plurality of pins to realize when realizing functions such as detecting and heat dissipation, the cost is higher, and can't the temperature deviation revises when detecting, this is the problem that needs to solve urgently.
Disclosure of Invention
The invention aims to solve the technical problems, and provides a cabinet heat dissipation system which comprises cabinets, heat dissipation devices, a control unit and a main control module, wherein the heat dissipation devices and the control unit are arranged in each cabinet according to the number of the cabinets, each heat dissipation device is connected with the control unit and the main control module, the control unit is used for detecting the temperature of the cabinets and feeding back signals to the main control module, and the main control module controls the heat dissipation devices to start.
Further, the control unit includes a first operational amplifier U1, a second operational amplifier U2, a first resistor R1, a second thermistor R2, a third potentiometer R3, a fourth resistor R4, a first diode D1, and a first input terminal IN1, one end of the first resistor R1 is connected to the power supply, the other end of the first resistor R1 is connected to one end of the second thermistor R2, the same-phase end of the first operational amplifier U1, the inverting end of the first operational amplifier U1 is connected to one end of the third potentiometer R3, one end of the fourth resistor R4, the other end of the fourth resistor R4 is connected to the anode of the first diode D1, the output end of the first operational amplifier U1, the cathode of the first diode D1 is connected to the same-phase end of the second operational amplifier U2, the first input terminal IN1 is connected to the main control module, the other end of the second resistor R2, the other end of the third potentiometer R3 is connected to the drain end of the third potentiometer R3, and the ground end is connected to the drain end of the third potentiometer R3.
Further, the control unit further comprises a third photodiode U3, a fourth photodiode U4, a fifth resistor R5, a sixth resistor R6, a first MOS tube Q1 and a first output end OUT1, wherein the grid electrode of the first MOS tube Q1 is connected with the output end of the second operational amplifier U2, the drain electrode of the first MOS tube Q1 is connected with one end of the fifth resistor R5, one end of the sixth resistor R6 and the inverting end of the second operational amplifier U2 are connected, the other end of the fifth resistor R5 is connected with a power supply, the source electrode of the first MOS tube Q1 is connected with the anode of the third photodiode U3, the other end of the third photodiode U3 and the other end of the sixth resistor R6 are connected with a grounding end, the collector electrode of the fourth photodiode U4 is connected with the power supply, the emitter electrode of the fourth photodiode U4 is connected with the first output end OUT1, and the first output end OUT1 is connected with the main control module.
Further, the control unit further includes a fifth operational amplifier U5, a sixth photodiode U6, a seventh resistor R7, an eighth resistor R8, a second MOS transistor Q2, a third transistor Q3, a fourth transistor Q4, and a second input terminal IN2, where the IN-phase terminal of the fifth operational amplifier U5 is connected to one end of the fourth resistor R4, the output terminal of the fifth operational amplifier U5 is connected to the gate of the second MOS transistor Q2, the drain of the second MOS transistor Q2 is connected to the power supply, the source of the second MOS transistor Q2 is connected to the collector of the fourth transistor Q4, one end of the eighth resistor R8, the base of the third transistor Q3, one end of the seventh resistor R7, one end of the eighth resistor R8, the anode of the sixth photodiode U6, the collector of the third transistor Q3 is connected to the base of the fourth transistor Q4, the second input terminal IN2 is connected to the master control module, and the emitter of the fourth transistor Q4, the sixth photodiode U6 is connected to the ground.
Further, the control unit further comprises a ninth resistor R9, a tenth resistor R10 and a second diode D2, one end of the ninth resistor R9 is connected with a power supply, the other end of the ninth resistor R9 is connected with the anode of the second diode D2 and one end of the tenth resistor R10, the cathode of the second diode D2 is connected with the drain electrode of the second MOS tube Q2, and the other end of the tenth resistor R10 is connected with a grounding end.
Further, the control unit further comprises an eleventh resistor R11 and a twelfth resistor R12, one end of the eleventh resistor R11 is connected with a power supply, and the other end of the eleventh resistor R11 is connected with the same-phase end of the second operational amplifier U2 and the other end of the twelfth resistor R12.
Further, the control unit further comprises a thirteenth resistor R13, a fourteenth resistor R14 and a fifteenth resistor R15, one end of the thirteenth resistor R13 is connected with the output end of the fifth operational amplifier U5, one end of the fourteenth resistor R14 is connected with the inverting end of the fifth operational amplifier U5 and one end of the fifteenth resistor R15, the other end of the fourteenth resistor R14 is connected with a power supply, and the other end of the thirteenth resistor R13 and the other end of the fifteenth resistor R15 are connected with a grounding end.
Further, the control unit further comprises a sixteenth resistor R16, one end of the sixteenth resistor R16 is connected with the grid electrode of the first MOS tube Q1, and the other end of the first MOS tube Q16 is connected with the grounding end.
Further, the heat dissipating device is composed of an air cooling fan and a motor.
Further, the main control module comprises an MCU chip.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the heat dissipation of the control cabinet can be realized through reducing the use ports, the cost is reduced, and the collected temperature signals are compensated and indicated in the heat dissipation process of the cabinet, so that the adjustment of patrol workers is facilitated.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly explain the drawings needed in the prior art and the embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of an overall structure provided by the present invention.
Fig. 2, 3 and 4 are schematic diagrams of the control unit.
Detailed Description
In order that the objects and advantages of the invention will become more readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings, it being understood that the following text is only intended to describe one or more specific embodiments of the invention and is not intended to limit the scope of the invention as defined in the appended claims.
Referring to the drawings, the invention relates to a cabinet heat dissipation system, which comprises cabinets, heat dissipation devices, a control unit and a main control module, wherein the heat dissipation devices and the control unit are arranged in each cabinet according to the number of the cabinets, each heat dissipation device is connected with the control unit and the main control module, the control unit is used for detecting the temperature of the cabinet and feeding back signals to the main control module, and the main control module controls the heat dissipation devices to start.
Specifically, the control unit includes a first operational amplifier U1, a second operational amplifier U2, a first resistor R1, a second thermistor R2, a third potentiometer R3, a fourth resistor R4, a first diode D1, and a first input terminal IN1, one end of the first resistor R1 is connected to a power supply, the other end of the first resistor R1 is connected to one end of the second thermistor R2, the same-phase end of the first operational amplifier U1, the inverting end of the first operational amplifier U1 is connected to one end of the third potentiometer R3, one end of the fourth resistor R4, the other end of the fourth resistor R4 is connected to the anode of the first diode D1, the output end of the first operational amplifier U1, the cathode of the first diode D1 is connected to the same-phase end of the first input terminal IN1, the second operational amplifier U2, the output end of the first input terminal IN1 is connected to a master control module, the other end of the second resistor R2, the other end of the third potentiometer R3, and the pumping and grounding end of the third potentiometer R3.
Specifically, the control unit further comprises a third photodiode U3, a fourth photodiode U4, a fifth resistor R5, a sixth resistor R6, a first MOS tube Q1 and a first output end OUT1, wherein the grid electrode of the first MOS tube Q1 is connected with the output end of the second operational amplifier U2, the drain electrode of the first MOS tube Q1 is connected with one end of the fifth resistor R5, one end of the sixth resistor R6 and the inverting end of the second operational amplifier U2 are connected, the other end of the fifth resistor R5 is connected with a power supply, the source electrode of the first MOS tube Q1 is connected with the anode of the third photodiode U3, the other end of the third photodiode U3 and the other end of the sixth resistor R6 are connected with a grounding end, the collector electrode of the fourth photodiode U4 is connected with the power supply, the emitter electrode of the fourth photodiode U4 is connected with the first output end OUT1, and the first output end OUT1 is connected with the main control module.
Specifically, the control unit further includes a fifth operational amplifier U5, a sixth photodiode U6, a seventh resistor R7, an eighth resistor R8, a second MOS transistor Q2, a third transistor Q3, a fourth transistor Q4, and a second input terminal IN2, where the IN-phase terminal of the fifth operational amplifier U5 is connected to one end of the fourth resistor R4, the output terminal of the fifth operational amplifier U5 is connected to the gate of the second MOS transistor Q2, the drain of the second MOS transistor Q2 is connected to a power supply, the source of the second MOS transistor Q2 is connected to the collector of the fourth transistor Q4, one end of the eighth resistor R8, the base of the third transistor Q3, one end of the seventh resistor R7, one end of the eighth resistor R8, the anode of the sixth photodiode U6, the collector of the third transistor Q3 is connected to the base of the fourth transistor Q4, the second input terminal IN2 is connected to the master control module, and the emitter of the fourth transistor Q4, the sixth photodiode U6 is connected to the ground.
Specifically, the control unit further comprises a ninth resistor R9, a tenth resistor R10 and a second diode D2, one end of the ninth resistor R9 is connected with a power supply, the other end of the ninth resistor R9 is connected with the anode of the second diode D2 and one end of the tenth resistor R10, the cathode of the second diode D2 is connected with the drain electrode of the second MOS tube Q2, and the other end of the tenth resistor R10 is connected with a grounding end.
Specifically, the control unit further comprises an eleventh resistor R11 and a twelfth resistor R12, one end of the eleventh resistor R11 is connected with a power supply, and the other end of the eleventh resistor R11 is connected with the same-phase end of the second operational amplifier U2 and the other end of the twelfth resistor R12.
Specifically, the control unit further includes a thirteenth resistor R13, a fourteenth resistor R14, and a fifteenth resistor R15, where one end of the thirteenth resistor R13 is connected to the output end of the fifth operational amplifier U5, one end of the fourteenth resistor R14 is connected to the inverting end of the fifth operational amplifier U5, one end of the fifteenth resistor R15 is connected to one end of the fourteenth resistor R14, the other end of the fourteenth resistor R14 is connected to a power supply, and the other end of the thirteenth resistor R13, and the other end of the fifteenth resistor R15 is connected to a ground terminal.
Specifically, the control unit further includes a sixteenth resistor R16, one end of the sixteenth resistor R16 is connected to the gate of the first MOS transistor Q1, and the other end of the first MOS transistor Q16 is connected to the ground.
Specifically, the heat dissipating device is composed of an air cooling fan and a motor.
Specifically, the main control module comprises an MCU chip.
Specifically, the heat dissipation device is arranged in each cabinet, the control unit detects the temperature in the cabinet, the main control module sends a threshold value signal to the control unit, and if the actual temperature exceeds the threshold value, the control unit returns to the main control module, and the main control module starts the heat dissipation device to cool.
The first resistor R1 and the second thermistor R2 are used for detecting temperature, converting voltage signals to the first operational amplifier U1, setting a third potentiometer R3, a fourth resistor R4 and the first operational amplifier U1 to form negative feedback to correct gain of signals output by the first operational amplifier U1, wherein the third potentiometer R3 is used for correcting and adjusting, the signals output by the first operational amplifier U1 are fed back to the second operational amplifier U2, the first diode D1 is used for isolating and clamping, the first input end IN1 is used for inputting correction signals of a standard origin, the second operational amplifier U2 fails to output when the first operational amplifier U1 outputs low correction gain signals, the inverting end of the second operational amplifier U2 is provided with temperature threshold signals, and the feedback signals are fed back to the main control module to start the heat sink when the second operational amplifier U2 outputs low correction gain signals.
Considering the setting of the cooling parameters after the actual temperature reaches the threshold value, the second operational amplifier U2 feeds back a signal to the first MOS tube Q1 during output, the threshold value signal set at the inverting terminal of the second operational amplifier U2 is set through the fifth resistor R5 and the sixth resistor R6, the purpose of the first MOS tube Q1 is to reduce the potential of the connecting end of the fifth resistor R5 and the sixth resistor R6 when the second operational amplifier U2 outputs, so that the inverting terminal of the second operational amplifier U2 has the change of two temperature threshold value signal quantities, the third photodiode U3 is conducted when the first MOS tube Q1 outputs, the third photodiode U3 is coupled with the fourth photodiode U4, the main control module controls the heat dissipation device to dissipate heat through the first output end OUT1, and if the temperature after heat dissipation is lower than the potential after the inverting terminal is reduced after the inverting terminal of the second operational amplifier U2, the second operational amplifier U2 stops outputting, and the circuit resets.
Considering that if the use is IN the scene that the difference IN temperature is great, can make the signal that outputs the correction appear chopping, let the output end signal feedback of first operational amplifier U1 to fifth operational amplifier U5, the inverting terminal of fifth operational amplifier U5 sets up the chopping threshold line, when the correction signal that first operational amplifier U1 output is close to the chopping output IN a certain period of time, fifth operational amplifier U5 output makes second MOS transistor Q2 switch on, the signal is through eighth resistance R8, sixth photodiode U6 arrives the ground terminal, sixth photodiode U6 switches on, third triode Q3 and fourth triode Q4 are used for preventing the output of first operational amplifier U1 from closing the signal closed loop when the chopping output is again through the cooling back, when the sixth photodiode U6 switches on, the output of second MOS transistor Q2 makes third triode Q3 bias and makes seventh resistance R7 end power pass through sixth photodiode U6, the ground terminal carries out the return circuit, make the sixth photodiode U6 end potential be less than third photodiode Q3, the potential is through the eighth photodiode U6, when the reset potential is controlled to the fourth triode Q4, when the reset potential is controlled to the third triode Q3, the signal is cut off, when the fourth triode Q4 switches on, the reset potential is accomplished to the third triode Q4, the signal is cut off, the current end is cut off, the signal is cut off to the end is cut off to the ground, when the third triode Q4 is IN the end is closed, the control is passed through the third photodiode Q6, the positive potential is cut off.
When the control units of the cabinets are connected with the main control module, the second input ends IN2 of the control units are connected IN parallel and connected with one I/O port of the MCU chip of the main control module for control. The sixth photodiode U6 and the seventh phototransistor U7 can be coupled and packaged, and fed back to the main control module through the second output end OUT2, which is represented as an upper-level indication signal of the cabinet group, and the second output ends OUT2 of the plurality of control units are connected in parallel with one I/O port of the MCU chip of the main control module.
The eleventh resistor R11 and the twelfth resistor R12 are used for replacing the correction signal of the standard origin input by the first input end IN1, the fourteenth resistor R14 and the fifteenth resistor R15 are used for supplying power to the inverting end of the fifth operational amplifier U5, the thirteenth resistor R13 and the sixteenth resistor R16 are used for signal pull-up, and it should be noted that if the circuit is used IN the occasion without inspection, the third potentiometer R3 can be replaced by a digital potentiometer, the digital potentiometer DIN and the CLK pin are connected with the MCU chip of the main control module, the four-season temperature change point is obtained during assembly, and the third potentiometer R3 is automatically adjusted.
The above description is only of the preferred embodiments of the present invention; the scope of the invention is not limited in this respect. Any person skilled in the art, within the technical scope of the present disclosure, may apply to the present invention, and the technical solution and the improvement thereof are all covered by the protection scope of the present invention.
Claims (3)
1. The cabinet heat dissipation system comprises cabinets, heat dissipation devices, a control unit and a main control module, and is characterized in that the heat dissipation devices and the control unit are arranged in each cabinet according to the number of the cabinets, each heat dissipation device is connected with the control unit and the main control module, and the control unit is used for detecting the temperature of the cabinets and feeding back signals to the main control module;
The control unit comprises a first operational amplifier, a second operational amplifier, a first resistor, a second thermistor, a third potentiometer, a fourth resistor, a first diode and a first input end, wherein one end of the first resistor is connected with a power supply, the other end of the first resistor is connected with one end of the second thermistor and the same-phase end of the first operational amplifier, the inverting end of the first operational amplifier is connected with one end of the third potentiometer and one end of the fourth resistor, the other end of the fourth resistor is connected with the anode of the first diode and the output end of the first operational amplifier, the cathode of the first diode is connected with the first input end and the same-phase end of the second operational amplifier, the output end of the second operational amplifier is connected with a main control module, and the other end of the second thermistor, the other end of the third potentiometer, the pumping end of the third potentiometer and the grounding end are connected;
The control unit further comprises a third photodiode, a fourth photodiode, a fifth resistor, a sixth resistor, a first MOS tube and a first output end, wherein the grid electrode of the first MOS tube is connected with the output end of the second operational amplifier, the drain electrode of the first MOS tube is connected with one end of the fifth resistor, one end of the sixth resistor and the inverting end of the second operational amplifier, the other end of the fifth resistor is connected with a power supply, the source electrode of the first MOS tube is connected with the anode of the third photodiode, the cathode of the third photodiode and the other end of the sixth resistor are connected with a grounding end, the third photodiode is coupled and packaged with the fourth photodiode, the collector electrode of the fourth photodiode is connected with the power supply, the emitter electrode of the fourth photodiode is connected with the first output end, and the first output end is connected with the main control module;
The control unit further comprises a fifth operational amplifier, a sixth photodiode, a seventh resistor, an eighth resistor, a second MOS tube, a third triode, a fourth triode and a second input end, wherein the in-phase end of the fifth operational amplifier is connected with the other end of the fourth resistor, the output end of the fifth operational amplifier is connected with the grid electrode of the second MOS tube, the source electrode of the second MOS tube is connected with the collector electrode of the fourth triode, one end of the eighth resistor and the base electrode of the third triode, the emitter electrode of the third triode is connected with one end of the seventh resistor, the other end of the eighth resistor and the anode of the sixth photodiode, the collector electrode of the third triode is connected with the base electrode of the fourth triode and the second input end of the fourth triode, the cathode of the fourth triode is connected with the ground end, and the other end of the seventh resistor is connected with a power supply;
The control unit further comprises a ninth resistor, a tenth resistor and a second diode, one end of the ninth resistor is connected with a power supply, the other end of the ninth resistor is connected with the anode of the second diode and one end of the tenth resistor, the cathode of the second diode is connected with the drain electrode of the second MOS tube, and the other end of the tenth resistor is connected with the grounding end;
The control unit further comprises an eleventh resistor and a twelfth resistor, one end of the eleventh resistor is connected with the power supply, one end of the twelfth resistor is connected with the tap end of the third potentiometer, and the other end of the eleventh resistor is connected with the same-phase end of the second operational amplifier and the other end of the twelfth resistor;
The control unit further comprises a thirteenth resistor, a fourteenth resistor and a fifteenth resistor, one end of the thirteenth resistor is connected with the output end of the fifth operational amplifier, one end of the fourteenth resistor is connected with the inverting end of the fifth operational amplifier and one end of the fifteenth resistor, the other end of the fourteenth resistor is connected with a power supply, and the other end of the thirteenth resistor and the other end of the fifteenth resistor are connected with a grounding end;
The control unit further comprises a sixteenth resistor, one end of the sixteenth resistor is connected with the grid electrode of the first MOS tube, and the other end of the sixteenth resistor is connected with the grounding end.
2. The cabinet heat dissipation system of claim 1, wherein the heat dissipation device is comprised of an air-cooled fan and a motor.
3. The cabinet heat dissipation system of claim 1, wherein the master control module comprises an MCU chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311237713.5A CN117279323B (en) | 2023-09-25 | 2023-09-25 | Cabinet cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311237713.5A CN117279323B (en) | 2023-09-25 | 2023-09-25 | Cabinet cooling system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117279323A CN117279323A (en) | 2023-12-22 |
| CN117279323B true CN117279323B (en) | 2024-05-14 |
Family
ID=89217305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311237713.5A Active CN117279323B (en) | 2023-09-25 | 2023-09-25 | Cabinet cooling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117279323B (en) |
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| CN203378183U (en) * | 2013-06-19 | 2014-01-01 | 山东朗进科技股份有限公司 | Heat dissipation device for frequency converter |
| CN104168729A (en) * | 2013-05-20 | 2014-11-26 | 天津市慧然网络科技有限公司 | Network equipment cabinet capable of automatic temperature control and air circulation |
| CN104345754A (en) * | 2013-08-05 | 2015-02-11 | 天津昌正帛升科技有限公司 | Humiture autoregulation network monitoring system |
| CN207678157U (en) * | 2017-11-08 | 2018-07-31 | 广东雅达电子股份有限公司 | A kind of data cabinet adjusts wind-powered electricity generation road automatically |
| CN208025718U (en) * | 2018-02-09 | 2018-10-30 | 北京子铭时代科技发展有限公司 | A kind of computer room temperature regulating system |
| CN209594136U (en) * | 2018-11-07 | 2019-11-05 | 成都鸿堒电子机械有限公司 | A kind of multifunctional intellectual cabinet |
| CN217761410U (en) * | 2022-06-22 | 2022-11-08 | 扬州永旭电气设备有限公司 | Fan control circuit for cooling electric cabinet |
| CN115808943A (en) * | 2022-12-28 | 2023-03-17 | 中泉万汇环境科技有限公司 | Intelligent control device for environment in greenhouse |
| CN116749811A (en) * | 2023-08-10 | 2023-09-15 | 湖南艾德迅电气科技股份有限公司 | Intelligent charger for new energy automobile |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104168729A (en) * | 2013-05-20 | 2014-11-26 | 天津市慧然网络科技有限公司 | Network equipment cabinet capable of automatic temperature control and air circulation |
| CN203378183U (en) * | 2013-06-19 | 2014-01-01 | 山东朗进科技股份有限公司 | Heat dissipation device for frequency converter |
| CN104345754A (en) * | 2013-08-05 | 2015-02-11 | 天津昌正帛升科技有限公司 | Humiture autoregulation network monitoring system |
| CN207678157U (en) * | 2017-11-08 | 2018-07-31 | 广东雅达电子股份有限公司 | A kind of data cabinet adjusts wind-powered electricity generation road automatically |
| CN208025718U (en) * | 2018-02-09 | 2018-10-30 | 北京子铭时代科技发展有限公司 | A kind of computer room temperature regulating system |
| CN209594136U (en) * | 2018-11-07 | 2019-11-05 | 成都鸿堒电子机械有限公司 | A kind of multifunctional intellectual cabinet |
| CN217761410U (en) * | 2022-06-22 | 2022-11-08 | 扬州永旭电气设备有限公司 | Fan control circuit for cooling electric cabinet |
| CN115808943A (en) * | 2022-12-28 | 2023-03-17 | 中泉万汇环境科技有限公司 | Intelligent control device for environment in greenhouse |
| CN116749811A (en) * | 2023-08-10 | 2023-09-15 | 湖南艾德迅电气科技股份有限公司 | Intelligent charger for new energy automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117279323A (en) | 2023-12-22 |
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