CN110989725A - Thermal management control method of cross-axle type photovoltaic power generation combiner box - Google Patents
Thermal management control method of cross-axle type photovoltaic power generation combiner box Download PDFInfo
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- CN110989725A CN110989725A CN201911254191.3A CN201911254191A CN110989725A CN 110989725 A CN110989725 A CN 110989725A CN 201911254191 A CN201911254191 A CN 201911254191A CN 110989725 A CN110989725 A CN 110989725A
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- thermal management
- power generation
- combiner box
- photovoltaic power
- temperature sensor
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- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000010248 power generation Methods 0.000 title claims abstract description 30
- 238000009825 accumulation Methods 0.000 claims abstract description 12
- 238000007689 inspection Methods 0.000 claims abstract description 9
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000007726 management method Methods 0.000 description 20
- 238000012423 maintenance Methods 0.000 description 4
- 230000000875 corresponding effect Effects 0.000 description 3
- 238000013024 troubleshooting Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1917—Control of temperature characterised by the use of electric means using digital means
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/40—Thermal components
- H02S40/42—Cooling means
- H02S40/425—Cooling means using a gaseous or a liquid coolant, e.g. air flow ventilation, water circulation
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a thermal management control method of a cross shaft type photovoltaic power generation combiner box, which comprises the following steps of: performing servo self-checking; self-checking the fan; self-checking of a temperature sensor; associating heat source positions; performing daily inspection; positioning a heat source; establishing a negative pressure air duct; heat source accumulation control; and repeatedly executing the operation of the step five. By the mode, the invention provides the thermal management control method of the cross-axle type photovoltaic power generation combiner box, aiming at the problem that the photovoltaic power generation combiner box is lack of effective thermal management, and a set of simple and efficient thermal management control method is designed on the basis of cross-axle type combiner box hardware, so that the working performance of electrical elements in the combiner box can be obviously improved, the service life of internal elements is prolonged, and the potential safety hazard under the high-load working condition is reduced.
Description
Technical Field
The invention relates to the field of thermal management of photovoltaic power generation combiner boxes, in particular to a thermal management control method of a cross-axle type photovoltaic power generation combiner box.
Background
The junction box is a wiring device for ensuring the orderly connection and junction functions of photovoltaic modules in a photovoltaic power generation system. The device can ensure that the photovoltaic system is easy to cut off the circuit during maintenance and inspection, and reduces the power failure range when the photovoltaic system breaks down.
The junction box is characterized in that a user can connect photovoltaic cells with a certain number and the same specification in series to form photovoltaic strings, then the photovoltaic strings are connected into the photovoltaic junction box in parallel, and after the photovoltaic junction box is internally connected with a junction box, the photovoltaic junction box is matched with a controller, a direct-current power distribution cabinet, a photovoltaic inverter and an alternating-current power distribution cabinet to form a complete photovoltaic power generation system, so that grid connection with a mains supply is realized.
When the assembly flows backward, the special direct current fuse for photovoltaic can cut off the fault group string in time. The direct current fuse used by the photovoltaic module is a special fuse specially designed for a photoelectric system, and is installed by adopting a special closed base, so that the phenomenon that the components are burnt down due to reverse flow of current between the strings is avoided. When current flows backwards, the direct current fuse rapidly withdraws the fault string from the system operation, other normally working strings are not affected, and the photovoltaic string and the conductor thereof can be safely protected from being threatened by reverse overload current.
The special direct current fuse of photovoltaic is the emergency protection subassembly when acting on the trouble and taking place, and in order to guarantee the normal operating of various safety protection subassemblies in daily use, when the design collection flow box safety structure, the inside thermal management defect problem of collection flow box becomes the first-line problem that needs to solve urgently.
Disclosure of Invention
The invention mainly solves the technical problem of providing a heat management control method of a cross shaft type photovoltaic power generation combiner box, aiming at the problem that the photovoltaic power generation combiner box is lack of effective heat management, and designing a set of simple and efficient heat management control method based on cross shaft type combiner box hardware can obviously improve the working performance of electrical elements in the combiner box, prolong the service life of internal elements and reduce potential safety hazards under high-load working conditions.
In order to solve the technical problems, the invention adopts a technical scheme that: the provided thermal management control method for the cross shaft type photovoltaic power generation combiner box comprises the following steps:
step one, servo self-checking;
step two, self-checking the fan;
step three, self-checking the temperature sensor;
step four, associating the positions of the heat sources;
step five, daily inspection;
sixthly, positioning a heat source;
step seven, establishing a negative pressure air duct;
step eight, heat source accumulation control;
and step nine, repeatedly executing the operation of the step five.
In a preferred embodiment of the invention, the servo self-checking process is to establish a control signal of the PLC and the servo, otherwise, a fault alarm record is generated at the PLC end.
In a preferred embodiment of the invention, the fan self-checking process is to establish PWM signals of the PLC and the vortex centrifugal fan, otherwise, an alarm record is generated at the PLC end.
In a preferred embodiment of the invention, the temperature sensor self-checking process is to establish data signals of the PLC and the temperature sensor, otherwise, an alarm record is generated at the PLC end.
In a preferred embodiment of the present invention, the heat source position association includes fan and temperature sensor association and servo and temperature sensor association.
In a preferred embodiment of the present invention, the fan and the temperature sensor are associated by associating the fan and the temperature sensor with the physically adjacent temperature sensor and the vortex centrifugal fan as the corresponding basis;
in a preferred embodiment of the present invention, the association between the servo and the temperature sensor is based on the sliding table moving to a position closest to the temperature sensor.
In a preferred embodiment of the invention, the routine inspection is that the PLC controls the vortex centrifugal fan to rotate and work under low-voltage industrial control through a relay, and the PLC controls the vortex centrifugal fan to sweep at fixed time and fixed point within the sliding table travelling range through a servo.
In a preferred embodiment of the present invention, the heat source locating process is that the PLC searches the data returned by the temperature sensor, marks the heat source data for the temperature data exceeding the set threshold, and finds the associated vortex centrifugal fan in step four.
In a preferred embodiment of the present invention, the heat source accumulation control is that the servo control sliding table moves the vortex centrifugal fan to a relevant position, and applies a high voltage to the vortex centrifugal fan to form an air channel to reduce heat source accumulation.
The invention has the beneficial effects that: according to the thermal management control method of the cross-axle type photovoltaic power generation combiner box, provided by the invention, aiming at the problem that the photovoltaic power generation combiner box is lack of effective thermal management, a set of simple and efficient thermal management control method is designed on the basis of cross-axle type combiner box hardware, so that the working performance of electrical elements in the combiner box can be obviously improved, the service life of internal elements is prolonged, and the potential safety hazard under a high-load working condition is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a flow chart of a preferred embodiment of a thermal management control method for a cross-axis photovoltaic power generation combiner box according to the present invention;
fig. 2 is a structural diagram of a preferred embodiment of a thermal management control method of a cross-axle type photovoltaic power generation combiner box according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-2, an embodiment of the present invention includes:
a thermal management control method of a cross-axle type photovoltaic power generation combiner box comprises the following steps:
step one, servo self-checking;
step two, self-checking the fan;
step three, self-checking the temperature sensor;
step four, associating the positions of the heat sources;
step five, daily inspection;
sixthly, positioning a heat source;
step seven, establishing a negative pressure air duct;
step eight, heat source accumulation control;
and step nine, repeatedly executing the operation of the step five.
The servo self-checking process is to establish control signals of the PLC001 and the servo 002, otherwise, a fault alarm record is generated at the PLC001 end.
Further, the self-checking process of the fan 003 is to establish PWM signals of the PLC001 and the vortex centrifugal fan 003, otherwise, an alarm record is generated at the PLC001 end.
Further, the self-checking process of the temperature sensor 004 is to establish data signals of the PLC001 and the temperature sensor 004, otherwise, an alarm record is generated at the PLC001 end.
Further, the heat source position association includes association of the fan 003 with the temperature sensor 004 and association of the servo 002 with the temperature sensor 004.
Further, the association between the fan 003 and the temperature sensor 004 is based on the physically adjacent temperature sensor 004 and the vortex centrifugal fan 003, and the association between the fan 003 and the temperature sensor 004 is performed;
further, the association between the servo 002 and the temperature sensor 004 is based on the sliding table 005 moving to the position closest to the temperature sensor 004, and the servo 002 and the temperature sensor 004 are associated.
Further, daily patrol and examine that PLC001 passes through relay 006 control vortex centrifugal fan 003 and rotate the work with same operation under the low-voltage industry control, PLC001 passes through servo 002 control vortex centrifugal fan 003 and sweeps at the fixed point of timing in the slip table 005 range of passing through.
Further, in the heat source positioning process, the PLC001 retrieves data returned by the temperature sensor 004, marks heat source data on the temperature data exceeding a set threshold, and searches for the associated vortex centrifugal fan 003 in step four.
Further, the heat source accumulation control is that the servo 002 controls the sliding table 005 to move the vortex centrifugal fan 003 to a relevant position, and applies high voltage to the vortex centrifugal fan 003 to form an air duct to reduce heat source accumulation.
Based on the control method, the specific implementation manner provided by the application is as follows:
as shown in the figure, the system comprises a PLC001 controller, a servo 002 motor, a lead screw sliding table 005, a centrifugal fan 003, a relay 006, a photovoltaic combiner box electrical component 007, and a temperature sensor 004. Two servo 002 motors are connected to PLC001 controller, lead screw slip table 005, every are driven respectively to servo 002 motor all install vortex centrifugal fan 003 on the lead screw slip table 005, and every vortex centrifugal fan 003 turns to and the rotational speed via independent relay 006 control, relay 006 connects PLC001 control, be provided with two at least temperature sensor 004 that distribute in different positions on the photovoltaic conflux box body electrical component 007, temperature sensor 004 all independently inserts PLC001 controller. The two vortex centrifugal fans 003 are respectively arranged at different side positions of the electrical element 007 of the photovoltaic combiner box body and used for constructing an immersive heat dissipation air duct, namely a curve diagram in the drawing.
Based on the above embodiments, the thermal management control method of the present application specifically executes the following process:
servo 002 self-checking establishes PLC001 controller and servo 002's control signal, and servo 002 motor is with one section of slip table 005 of the position homing value lead screw slip table 005 this moment, if the in-process breaks down, can't realize the homing operation promptly, then generates the fault alarm record at PLC001 end for after-sales maintainer carries out follow-up repair operations such as troubleshooting.
The next step is self-checking of the fan 003, PWM signals of the PLC001 controller and the vortex centrifugal fan 003 are established, and the signals are established for adjusting mechanical states of the fan 003 such as rotating speed and the like in a standby state, so that the fan 003 can continuously keep the standby operation under the working condition of low power consumption, and the energy consumption is excessive in the standby process. If the PWM signal cannot be transmitted back in real time, an alarm record is generated at the PLC001 end and is used for after-sales maintenance personnel to carry out follow-up repair operations such as troubleshooting.
The next step is self-checking of the temperature sensor 004, data signals of the PLC001 controller and the temperature sensor 004 are established, the temperature sensor 004 can be installed at different positions of the electric element 007, such as the entrance and the exit, or the front and the back, and the like, which are opposite, more temperature sensors 004 are added to facilitate more accurate heat management due to different local heat productivity of the electric element 007, and if the data signals of the temperature sensor 004 cannot be returned normally, an alarm record is generated at the PLC001 end for after-sales maintenance personnel to perform subsequent repair operations such as troubleshooting.
Wherein the heat source position association comprises association of the fan 003 with the temperature sensor 004 and association of the servo 002 with the temperature sensor 004.
The association between the fan 003 and the temperature sensor 004 is based on the correspondence between the physically adjacent temperature sensor 004 and the vortex centrifugal fan 003, and the association between the fan 003 and the temperature sensor 004 is performed; for example, if the temperature sensor 004 near the back surface of the electrical component 007 is closer to the eddy current centrifugal fan 003 disposed on the back surface of the electrical component 007 than the temperature sensor 004 on the front surface of the electrical component 007, the eddy current centrifugal fan 003 and the temperature sensor 004 on the back surface of the electrical component 007 will be correlated. The use thereof will be discussed further in the subsequent control.
In addition, the association between the servo 002 and the temperature sensor 004 is based on the sliding table 005 moving to the position closest to the temperature sensor 004, and the servo 002 and the temperature sensor 004 are associated. For example, when the sliding table 005 moves to the position a, the vortex centrifugal fan 003 is closest to the third temperature sensor 004, and the third temperature sensor 004 is associated with the operation data of the position state reached by the servo 002 in the operating condition at this time. The use thereof will be discussed further in the subsequent control.
Based on aforementioned earlier stage preparation, next carry out daily inspection, PLC001 controller passes through relay 006 control vortex centrifugal fan 003 under the low voltage low rotational speed operating mode with minimum rotational speed steady job that lasts, for photovoltaic power generation collection flow box establishes stable and low energy consumption's circulation of air and low heat exchange management. PLC001 controller accessible servo 002 motor control vortex centrifugal fan 003 sweep regularly fixed point in the slip table 005 range of passing through, realize the even immersive cover of all points that generate heat of electrical component 007.
In an emergency, for example, under a high-load working condition, the heat source positioning process starts to execute operation, the PLC001 controller acquires data returned by the temperature sensor 004 in real time, and the temperature data exceeding a set threshold (a high-temperature corresponding threshold is preset in the PLC001 controller and can be set to 80 ℃) is marked as heat source data for recording and recording the subsequent maintenance and inspection of forming a log file in the PLC001 controller. At this time, the PLC001 controller checks the centrifugal vortex fan 003 and the corresponding servo 002 motor associated with the temperature sensor 004, performs the operation of adjusting the air duct, that is, the servo 002 motor operates, and operates the sliding table 005 to the associated position closest to the temperature sensor 004, so that the electric element 007 with the accumulated heat is immersed in the newly-built air duct.
Finally, when the heat source accumulation control is started, the servo 002 controls the sliding table 005 to move the vortex centrifugal fan 003 to a relevant position, and applies high voltage to the vortex centrifugal fan 003 to keep the vortex centrifugal fan 003 running at high speed and full speed, so that a negative pressure air channel is formed in a short time to reduce heat source accumulation.
In summary, the invention provides a thermal management control method for a cross-axle type photovoltaic power generation combiner box, and aims to solve the problem that the photovoltaic power generation combiner box is lack of effective thermal management, and a set of simple and efficient thermal management control method is designed on the basis of cross-axle type combiner box hardware, so that the working performance of an electrical element 007 in the combiner box can be obviously improved, the service life of internal components is prolonged, and potential safety hazards under a high-load working condition are reduced.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A thermal management control method of a cross shaft type photovoltaic power generation combiner box is characterized by comprising the following steps:
step one, servo self-checking;
step two, self-checking the fan;
step three, self-checking the temperature sensor;
step four, associating the positions of the heat sources;
step five, daily inspection;
sixthly, positioning a heat source;
step seven, establishing a negative pressure air duct;
step eight, heat source accumulation control;
and step nine, repeatedly executing the operation of the step five.
2. The thermal management control method of the cross-axle type photovoltaic power generation combiner box of claim 1, wherein the servo self-checking process is to establish a control signal between a PLC and a servo, otherwise, a fault alarm record is generated at a PLC end.
3. The method for controlling the thermal management of the cross-axle type photovoltaic power generation combiner box according to claim 1, wherein the fan self-checking process is to establish PWM signals of a PLC and an eddy centrifugal fan, and otherwise, an alarm record is generated at the PLC end.
4. The method for controlling the thermal management of the cross-axle type photovoltaic power generation combiner box according to claim 1, wherein the temperature sensor self-checking process is to establish data signals of a PLC and the temperature sensor, and otherwise, an alarm record is generated at a PLC end.
5. The method for thermal management control of a cross-axis photovoltaic power generation combiner box of claim 1, wherein the heat source location associations comprise fan to temperature sensor associations and servo to temperature sensor associations.
6. The method for controlling the thermal management of the cross-axis type photovoltaic power generation combiner box of claim 5, wherein the association between the fan and the temperature sensor is based on the physically adjacent temperature sensor and the vortex centrifugal fan as corresponding bases.
7. The method for controlling the thermal management of the cross-axle type photovoltaic power generation combiner box according to claim 5, wherein the association between the servo and the temperature sensor is based on that the sliding table runs to a position closest to the temperature sensor.
8. The thermal management control method of the cross-axle type photovoltaic power generation combiner box of claim 1, wherein the daily inspection is that a PLC controls a vortex centrifugal fan to rotate and work in the same operation mode under low-voltage industrial control through a relay, and the PLC controls the vortex centrifugal fan to perform fixed-point scanning at fixed time within a sliding table passing range through a servo control.
9. The method for controlling the thermal management of the cross-axis photovoltaic power generation combiner box of claim 1, wherein the heat source positioning process comprises the steps of retrieving data returned by the temperature sensors by the PLC, marking the temperature data exceeding a set threshold value by heat source data, and searching for the associated vortex centrifugal fan in the fourth step.
10. The thermal management control method of the cross-axle type photovoltaic power generation combiner box of claim 1, wherein the heat source accumulation control is that a servo control sliding table operates a vortex centrifugal fan to a relevant position, and high voltage is applied to the vortex centrifugal fan to form an air channel to reduce heat source accumulation.
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| CN201911254191.3A CN110989725A (en) | 2019-12-07 | 2019-12-07 | Thermal management control method of cross-axle type photovoltaic power generation combiner box |
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| CN201911254191.3A CN110989725A (en) | 2019-12-07 | 2019-12-07 | Thermal management control method of cross-axle type photovoltaic power generation combiner box |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102374182A (en) * | 2010-08-24 | 2012-03-14 | 联想(北京)有限公司 | Equipment cabinet and fan system thereof |
| CN106050718A (en) * | 2016-07-12 | 2016-10-26 | 邦彦技术股份有限公司 | Intelligent fan control method and system |
| CN106357215A (en) * | 2016-11-09 | 2017-01-25 | 天津开合电力科技有限公司 | Intelligent photovoltaic convergence box |
| CN206361861U (en) * | 2016-12-13 | 2017-07-28 | 湖南软件职业学院 | The removable fan in one kind teaching classroom |
| CN207098370U (en) * | 2017-06-19 | 2018-03-13 | 东莞市华开电气设备有限公司 | A kind of high efficiency and heat radiation rainproof distribution box |
| CN207801180U (en) * | 2017-12-29 | 2018-08-31 | 深圳市深电电气有限公司 | A kind of power distribution cabinet convenient for adjusting |
| CN208078467U (en) * | 2018-02-09 | 2018-11-09 | 贾天萌 | A kind of radiator of electric power cabinet |
| CN109002152A (en) * | 2018-09-25 | 2018-12-14 | 刘会 | A kind of reciprocating deflecting heat radiating type main frame |
| CN208445927U (en) * | 2018-08-03 | 2019-01-29 | 宁波矩阵电子有限公司 | A kind of Multi sectional temperature adjustment cabinet |
| CN109473892A (en) * | 2018-11-30 | 2019-03-15 | 广东求精电气有限公司 | A kind of intelligent cooling distribution box |
| CN110043499A (en) * | 2019-04-11 | 2019-07-23 | 曙光信息产业(北京)有限公司 | A kind of intelligent fan speed regulation device |
| CN209659852U (en) * | 2019-01-11 | 2019-11-19 | 长春诺信自动化科技有限公司 | A kind of radiator of servo controller |
| CN209659839U (en) * | 2018-12-19 | 2019-11-19 | 广州银谷电子科技有限公司 | Electrical control cabinet temperature control system |
-
2019
- 2019-12-07 CN CN201911254191.3A patent/CN110989725A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102374182A (en) * | 2010-08-24 | 2012-03-14 | 联想(北京)有限公司 | Equipment cabinet and fan system thereof |
| CN106050718A (en) * | 2016-07-12 | 2016-10-26 | 邦彦技术股份有限公司 | Intelligent fan control method and system |
| CN106357215A (en) * | 2016-11-09 | 2017-01-25 | 天津开合电力科技有限公司 | Intelligent photovoltaic convergence box |
| CN206361861U (en) * | 2016-12-13 | 2017-07-28 | 湖南软件职业学院 | The removable fan in one kind teaching classroom |
| CN207098370U (en) * | 2017-06-19 | 2018-03-13 | 东莞市华开电气设备有限公司 | A kind of high efficiency and heat radiation rainproof distribution box |
| CN207801180U (en) * | 2017-12-29 | 2018-08-31 | 深圳市深电电气有限公司 | A kind of power distribution cabinet convenient for adjusting |
| CN208078467U (en) * | 2018-02-09 | 2018-11-09 | 贾天萌 | A kind of radiator of electric power cabinet |
| CN208445927U (en) * | 2018-08-03 | 2019-01-29 | 宁波矩阵电子有限公司 | A kind of Multi sectional temperature adjustment cabinet |
| CN109002152A (en) * | 2018-09-25 | 2018-12-14 | 刘会 | A kind of reciprocating deflecting heat radiating type main frame |
| CN109473892A (en) * | 2018-11-30 | 2019-03-15 | 广东求精电气有限公司 | A kind of intelligent cooling distribution box |
| CN209659839U (en) * | 2018-12-19 | 2019-11-19 | 广州银谷电子科技有限公司 | Electrical control cabinet temperature control system |
| CN209659852U (en) * | 2019-01-11 | 2019-11-19 | 长春诺信自动化科技有限公司 | A kind of radiator of servo controller |
| CN110043499A (en) * | 2019-04-11 | 2019-07-23 | 曙光信息产业(北京)有限公司 | A kind of intelligent fan speed regulation device |
Non-Patent Citations (2)
| Title |
|---|
| 李伯成 等: "《IBM PC微机应用系统设计》", 31 March 1994, 西安电子科技大学出版社 * |
| 蒋秀欣 等: "《空调器检修技术快易通》", 31 December 2006 * |
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Application publication date: 20200410 |