CN207650284U - A kind of condensation test device - Google Patents
A kind of condensation test device Download PDFInfo
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- CN207650284U CN207650284U CN201721301193.XU CN201721301193U CN207650284U CN 207650284 U CN207650284 U CN 207650284U CN 201721301193 U CN201721301193 U CN 201721301193U CN 207650284 U CN207650284 U CN 207650284U
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Abstract
The utility model discloses a kind of condensation test devices comprising：Chamber is equipped with detection unit；Aqua storage tank is connect by diversion pipe with chamber, and is equipped with heating device, ultrasonic atomization module and air-breather；Control unit is connect with detection unit, heating device, ultrasonic atomization module and air-breather respectively；To control the working condition of the heating device, the ultrasonic atomization module and the air-breather according to the testing result of the detection unit.The condensation test device of the utility model to electronic electric equipment, it can be achieved that carry out condensation test.The process that it is tested is simple and quick, efficient；Condensation test can be completed at normal temperatures, the phenomenon that object under test is not in frosting；Compressor need not be used to reduce the temperature of object under test, on the one hand reduce power consumption, on the other hand reduce cost.It not will produce toxic and harmful gas or dust during operation simultaneously, meet environment protection requirement.
Description
Technical field
The utility model is related to test equipment technical field more particularly to a kind of condensation test devices.
Background technology
When condensation refers to the dew-point temperature that body surface temperature is less than surrounding air, water vapor in air is cold in body surface
The phenomenon that congealing into droplet.This phenomenon is very common in northern China and coastal area, also happens occasionally in southern area.
Condensation can bring harm to electric and electronic product, in hot humid place because device burn into caused by condensation is climbed
The accidents such as lighting network, short-circuit aircraft bombing occur again and again.In order to avoid the generation of this kind of accident, electric and electronic product leads to before manufacture
Often need to first pass through condensation test.
Currently, the common practice of condensation test is：It is tested using high-low temperature test chamber, is first positioned over determinand
Then determinand is transferred to constant temperature (room temperature) environment by deep colling under low temperature in low-temperature test chamber, it is allowed to generate condensation effect.It is this kind of
Test method is no doubt feasible, but there is also some disadvantages or limitations, main as follows：
1, experiment process is relatively cumbersome, and duration of test runs is long, needs a few hours, inefficiency.
2, determinand surface is likely to occur frosting, to carry out drying and processing to determinand after the test.
3, temperature-fall period needs compressor operating to freeze, and equipment cost is higher.
Utility model content
Technical problem to be solved in the utility model is how to provide that a kind of testing efficiency is high, equipment cost is low and can
The condensation test device tested at normal temperatures.
To solve the above-mentioned problems, the utility model provides a kind of condensation test device comprising：
Chamber, the interior detection unit being equipped with for detecting experimental enviroment parameter in the chamber；
Aqua storage tank is connect by diversion pipe with the chamber, interior to be equipped with for heating the water in the aqua storage tank
Heating device, the ultrasonic atomization module for the water mist in the aqua storage tank to be turned to water mist and for the aqua storage tank
Inside it is passed through the air-breather of gas；And
Control unit, respectively with the detection unit, the heating device, the ultrasonic atomization module and described logical
Device of air connection with controlled according to the testing result of the detection unit heating device, the ultrasonic atomization module with
And the working condition of the air-breather.
Its further technical solution is：Further include：
Water level sensor, to detect the liquid level of the water in the aqua storage tank in the aqua storage tank；And
Priming apparatus is set in the aqua storage tank and adds water in the previous aqua storage tank；
Wherein, described control unit is connect with the water level sensor and the priming apparatus with according to the water respectively
The testing result of level sensor controls the working condition of the priming apparatus.
Its further technical solution is：Further include：
Water temperature sensor, to detect the temperature of the water in the aqua storage tank in the aqua storage tank；
Wherein, described control unit is connect with the water temperature sensor with according to the testing result control of the water temperature sensor
Make the working condition of the heating device.
Its further technical solution is：The detection unit includes：
Temperature sensor is connect with the detection unit, to detect the temperature in the chamber；And
Humidity sensor is connect with the detection unit, to detect the humidity in the chamber.
Its further technical solution is：Described control unit passes through first control circuit and the ultrasonic atomization module
Connection；The first control circuit includes：
First controllable switch, first controllable switch include input, output end and control terminal, and described first is controllable
For being connect with power supply, the output end of first controllable switch is connect the input terminal of switch with the ultrasonic atomization module,
The control terminal of first controllable switch is connect with described control unit.
Its further technical solution is：The first control circuit further includes：
First switch power supply unit, the first switch power supply unit include input, output end and control terminal, described
For the input terminal of first switch power supply for being connect with city's electric unit, the output end of the first switch power supply is controllable with described first
The input terminal of switch connects, and the control terminal of the first switch power supply is connect with described control unit.
Its further technical solution is：Described control unit is connect by second control circuit with the heating device；
The second control circuit includes：
Second controllable switch, second controllable switch include input, output end and control terminal, and described second is controllable
For being connect with power supply, the output end of second controllable switch is connect the input terminal of switch with the heating device, and described the
The control terminal of two controllable switches is connect with described control unit.
Its further technical solution is：The second control circuit further includes：
Second switch power supply unit, the second switch power supply unit include input, output end and control terminal, described
For the input terminal of second switch power supply for being connect with city's electric unit, the output end of the second switch power supply is controllable with described second
The input terminal of switch connects, and the control terminal of the second switch power supply is connect with described control unit.
Its further technical solution is：Further include analog-digital converter, wherein described control unit is turned by the modulus
Parallel operation is connect with the water level sensor, the water temperature sensor, the temperature sensor and the humidity sensor respectively.
Its further technical solution is：Further include human-computer interaction interface, the human-computer interaction interface is single with the control
Member connection.
The condensation test device that the present embodiment proposes to electronic electric equipment (such as frequency converter), it can be achieved that carry out condensation examination
It tests.The process of experiment is simple and quick, efficient；Condensation test can be completed at normal temperatures, object under test is not in frosting
Phenomenon；Compressor need not be used to reduce the temperature of object under test, on the one hand reduce power consumption, on the other hand reduce cost.
It not will produce toxic and harmful gas or dust during operation simultaneously, meet environment protection requirement.
Description of the drawings
It is required in being described below to embodiment to make in order to illustrate more clearly of the utility model embodiment technical solution
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is some embodiments of the utility model, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is a kind of structural schematic diagram for condensation test device that the utility model embodiment provides；
Fig. 2 is a kind of schematic block diagram for condensation test device that the utility model embodiment provides；
Fig. 3 is the schematic block diagram of detection unit in Fig. 2；
Fig. 4 is a kind of another schematic block diagram for condensation test device that the utility model embodiment provides；
Fig. 5 is the schematic block diagram of first control circuit in Fig. 4；
Fig. 6 is the schematic block diagram of second control circuit in Fig. 4；
Fig. 7 is a kind of another schematic block diagram for condensation test device that the utility model embodiment provides.
Reference numeral
1, aqua storage tank；2, chamber；3, control unit；4, diversion pipe；5, detection unit；6, analog-digital converter；7, man-machine
Interactive interface；11, heating device；12, ultrasonic atomization module；13, air-breather；14, priming apparatus；15, water level sensor；
16, water temperature inductor；17, first control circuit；18, second control circuit；51, temperature sensor；52, humidity sensor；
171, the first controllable switch；172, first switch power supply；181, the second controllable switch；182, second switch power supply.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, the technical solution in embodiment is carried out it is clear, complete
Ground describes, and similar reference numerals represent similar component in attached drawing.Obviously, will be described below embodiment is only this practicality
Novel a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The every other embodiment that member is obtained without creative efforts belongs to the model of the utility model protection
It encloses.
It should be appreciated that ought use in this specification and in the appended claims, term " comprising " and "comprising" instruction
Described feature, entirety, step, operation, the presence of element and/or component, but one or more of the other feature, whole is not precluded
Body, step, operation, element, component and/or its presence or addition gathered.
It is also understood that specific merely for the sake of describing in this utility model embodiment term used in the description
The purpose of embodiment and be not intended to limit the utility model embodiment.Such as in the utility model embodiment specification and appended power
As used in sharp claim, other situations unless the context is clearly specified, otherwise " one " of singulative, "one"
And "the" is intended to include plural form.
Referring to Fig. 1-2, the utility model proposes a kind of condensation test devices comprising chamber 2, aqua storage tank 1 and control
Unit 3 processed.Each component is described below：
Chamber 2, internal is condensation test area, and the condensation test of object under test carries out in chamber 2.In order to make
Article to be measured has preferable condensation effect, has certain requirement (predominantly temperature and wet to the experimental enviroment in chamber 2
The requirement of degree), for this purpose, the detection unit 5 for detecting experimental enviroment parameter in chamber 2 is equipped in chamber 2, with detection
Whether the experimental enviroment in chamber 2 meets test requirements document.
Aqua storage tank 1 is connect by diversion pipe 4 with chamber 2, interior to be equipped with heating device 11, ultrasonic atomization module 12
And air-breather 13.Wherein, heating device 11 can heat the water in aqua storage tank 1, can play the role of preheating water.It is super
Water mist in aqua storage tank 1 can be turned to water mist by sound wave atomizing module 12.It should be noted that ultrasonic atomization module 12 is to utilize
The water mist of certain temperature is turned to ultramicron (grain size is 1-5 microns) by the principle of ultrasonic wave high frequency oscillation, and obtains water mist.
Air-breather 13 can be passed through gas into aqua storage tank 1, increase the air pressure in aqua storage tank 1 so that between aqua storage tank 1 and chamber 2
There are pressure differences, so that the gas in aqua storage tank 1 is flowed into chamber 2.
Control unit 3 connects with detection unit 5, heating device 11, ultrasonic atomization module 12 and air-breather 13 respectively
It connects.Control unit 3 is the control core of condensation test device, plays the role of the above-mentioned each component of control.Control unit 3 can receive
And the detection data of detection unit 5 is analyzed, and control opening for heating device 11, ultrasonic atomization module 12 and air-breather 13
It opens and closes.Heating device 11 can realize the preheating to water in aqua storage tank 1；Ultrasonic atomization module 12 can will be in aqua storage tank 1
Water mist turns to water mist；Air-breather 13 can be passed through gas into aqua storage tank 1, which can drive water mist to flow into chamber 2.
In specific implementation, control unit 3 receives the detection data that detection unit 5 is fed back, and is judged according to the detection data
Whether the experimental enviroment in chamber 2 reaches default experimental enviroment requirement.Default experimental enviroment require be so that object under test most
The fast environmental requirement for generating dew condensation phenomenon, those skilled in the art can be by empirically determined, such as default experimental enviroment requirement
Can be：40 DEG C of temperature, relative humidity 100%.
If the not up to default experimental enviroment requirement of experimental enviroment in the chamber 2, control unit 3 control ultrasonic fog
Change module 12 to open so that the water mist in aqua storage tank 1 is turned to water mist, and control air-breather 13 is opened into aqua storage tank 1 to lead to
Enter gas, to drive water mist to be flowed into chamber 2 by diversion pipe 4.It, can be on object under test after water mist enters chamber 2
Condensation is formed, condensation test is carried out so as to measuring targets.Since the water in sink is pre-heated so that the temperature of water mist
Degree is higher than room temperature, therefore condensation test can be completed in object under test at room temperature, is done at cooling without measuring targets
Reason.
Since the water mist that ultrasonic atomization module 12 generates is smaller, and the mobility of water mist is bad, therefore it flows to experiment
Speed in case 2 is slower.In order to improve the speed that water mist flows into chamber 2, the present embodiment is by being arranged air-breather 13
It is passed through gas into aqua storage tank 1, under the drive of gas, water mist can be flowed into quickly through diversion pipe 4 in chamber 2, to
The speed for generating dew condensation phenomenon in object under test is accelerated, the time of condensation test is reduced.
If the experimental enviroment in chamber 2 reaches default experimental enviroment requirement, control unit 3 controls ultrasonic atomization module
12 and air-breather 13 close.
The condensation test device that the present embodiment proposes to electronic electric equipment (such as frequency converter), it can be achieved that carry out condensation examination
It tests.The process of experiment is simple and quick, efficient；Condensation test can be completed at normal temperatures, object under test is not in frosting
Phenomenon；Compressor need not be used to reduce the temperature of object under test, on the one hand reduce power consumption, on the other hand reduce cost.
It not will produce toxic and harmful gas or dust during operation simultaneously, meet environment protection requirement.
Referring to Fig. 3, in some embodiments, such as the present embodiment, detection unit 5 includes temperature sensor 51 and humidity
Sensor 52, temperature sensor 51 and humidity sensor 52 are connect with control unit 3 respectively, and are controlled by control unit 3.
The experimental enviroment of condensation test can be determined by the temperature and humidity of environment, therefore be respectively set in chamber 2
Temperature sensor 51 and humidity sensor 52 detect the temperature and humidity in chamber 2.
Referring to Fig. 4, in some embodiments, such as the present embodiment, it is additionally provided with water level sensor 15 in aqua storage tank 1 and adds
Water installations 14.Water level sensor 15 can detect the liquid level of the water in aqua storage tank 1.Priming apparatus 14 can add water into sink.
Water level sensor 15 is connect with control unit 3 respectively with priming apparatus 14, and is controlled by control unit 3.
Control unit 3 is used to maintain the stabilization of the water level in aqua storage tank 1.Specifically, control unit 3 receives water level sensor
The detection data of 15 feedbacks, and judge whether the liquid level of the water in aqua storage tank 1 reaches pre-set level according to the detection data
Highly.Pre-set level height is the best liquid level needed for the generation water mist of ultrasonic atomization module 12, can be by art technology
Personnel are empirically determined, are not specifically limited herein.
If the liquid level of the water in aqua storage tank 1 is not up to pre-set level height, control unit 3 controls priming apparatus 14 and opens
It opens, to add water into aqua storage tank 1；If the liquid level of the water in aqua storage tank 1 has reached pre-set level height, control unit 3 is controlled
Priming apparatus 14 processed is closed.Thus the liquid level of the water in aqua storage tank 1 may make to maintain pre-set level height always so that
Ultrasonic atomization module 12 always works in best liquid level, it is ensured that the nebulization efficiency of ultrasonic atomization module 12.
Referring to Fig. 4, in some embodiments, such as the present embodiment, water temperature sensor 16 is additionally provided in aqua storage tank 1.Water temperature
Sensor 16 can detect the temperature of water in aqua storage tank 1.Water temperature sensor 16 is connect with control unit 3, and is controlled by control unit
3。
Control unit 3 is used to maintain the stabilization of the water temperature in aqua storage tank 1.Specifically, control unit 3 receives water temperature sensor
The detection data of 16 feedbacks, and judge whether the temperature of the water in aqua storage tank 1 reaches default water temperature according to the detection data.It is default
Water temperature is the optimum water temperature needed for the generation water mist of ultrasonic atomization module 12, can be empirically determined by those skilled in the art,
It is not specifically limited herein.For example, can be 50~55 DEG C.
If the not up to default water temperature of the temperature of the water in aqua storage tank 1, control unit 3 control the startup of the heating device 11,
To heat the water in the aqua storage tank 1；If the temperature of the water in aqua storage tank 1 has reached default water temperature, control unit 3 closes institute
State heating device 11.Thus the temperature of the water in aqua storage tank 1 may make to maintain default water temperature always so that ultrasonic atomization mould
Block 12 always works in best water temperature, it is ensured that the nebulization efficiency of ultrasonic atomization module 12.
Referring to Fig. 4 and Fig. 5, in some embodiments, such as the present embodiment, control unit 3 passes through first control circuit 17
It is connect with ultrasonic atomization module 12.First control circuit 17 includes the first controllable switch 171.First controllable switch 171 includes
Input, output end and control terminal；The input terminal of first controllable switch 171 with power supply for connecting, the first controllable switch 171
Output end connect with ultrasonic atomization module 12, the control terminal of the first controllable switch 171 connect and is controlled by with control unit 3
Control unit 3.The open and close of ultrasonic atomization module 12 can be flexibly realized by the first controllable switch 171.
Further, first control circuit 17 further includes first switch power supply Unit 172.First switch power supply Unit 172
Including input, output end and control terminal, for being connect with city's electric unit, first opens the input terminal of first switch power supply 172
The output end in powered-down source 172 is connect with the input terminal of the first controllable switch 171, the control terminal of first switch power supply 172 with it is described
Control unit 3 connects and is controlled by control unit 3.The alternating current that city's electric unit provides can be turned by first switch power supply 172
It is changed to the direct current needed for ultrasonic atomization module 12, and a steady dc voltage output can be provided, ensure that super
The stability that sound wave atomizing module 12 works.
Referring to Fig. 4 and Fig. 6, in some embodiments, such as the present embodiment, described control unit 3 passes through the second control electricity
Road 18 is connect with the heating device 11.Second control circuit 18 includes the second controllable switch 181.Second controllable switch 181 wraps
Include input, output end and control terminal；For the input terminal of second controllable switch 181 for being connect with power supply, described second is controllable
The output end of switch 181 is connect with the heating device 11, the control terminal and described control unit of second controllable switch 181
3 connect and are controlled by control unit 3.The open and close of heating device 11 can be flexibly realized by the second controllable switch 181.
Further, the second control circuit 18 further includes second switch power supply Unit 182.Second switch power supply 182
Unit includes input, output end and control terminal, and the input terminal of second switch power supply 182 is used to connect with city's electric unit, the
The output end of two Switching Power Supplies 182 is connect with the input terminal of second controllable switch 181, the control of second switch power supply 182
End is connect with described control unit 3.The alternating current that can be provided city's electric unit by second switch power supply 182 is converted to heating dress
The direct current needed for 11 is set, and a steady dc voltage output can be provided, ensure that heating device 11 works steady
It is qualitative.
Further, the heating device 11 can be specially heater.
Referring to Fig. 7, in some embodiments, such as the present embodiment, the utility model proposes condensation test device also wrap
Include analog-digital converter 6.Wherein, described control unit 3 by the analog-digital converter 6 respectively with the water level sensor 15, institute
Water temperature sensor 16, the temperature sensor 51 and the humidity sensor 52 is stated to connect.Analog-digital converter 6 can pass water level
Sensor 15, water temperature sensor 16, temperature sensor 51, humidity sensor 52 the analog signal detected be converted to digital letter
Number, to realize the visualization of measurement data.
Further, the utility model proposes condensation test device further include human-computer interaction interface 7.Human-computer interaction interface
7 connect with control unit 3.Human-computer interaction interface 7 can receive parsing and come from 3 digital signal of control unit, and show water level respectively
The measurement data of sensor 15, water temperature sensor 16, temperature sensor 51 and humidity sensor 52.To facilitate user real-time
The situation inside condensation test device is grasped, the manipulation of user is facilitated.
In some embodiments, such as the present embodiment, control unit 3 can be specially PLC (programmable logic controller (PLC)), control
Unit 3 processed can be by carrying out configuration realization to the manipulation process of each device to PLC, and the configuration process of PLC is people in the art
Known to member, this is repeated no more.
In some embodiments, such as the present embodiment, air-breather 13 can be specially can air control valve, can air control valve include gas
Body input terminal, gas output end and control terminal.Can air control valve gas input for being connect with air supply source, can air control valve
Gas output end is placed in the inside of aqua storage tank 1, can the control terminal of air control valve connect with control unit 3.
Further, priming apparatus 14 can be specially controllable water valve, and controllable water valve includes fluid input port, fluid output port
And control terminal.For the fluid input port of controllable water valve for being connect with watering, the fluid output port of controllable water valve is placed in water storage
The control terminal of the inside of slot 1, controllable water valve is connect with control unit 3.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, is not described in some embodiment
Part, may refer to the associated description of other embodiment.
The above is specific embodiment of the present utility model, but the scope of protection of the utility model is not limited to
This, any one skilled in the art within the technical scope disclosed by the utility model, can readily occur in various etc.
The modifications or substitutions of effect, these modifications or substitutions should be covered within the scope of the utility model.Therefore, this practicality is new
The protection domain of type should be subject to the protection scope in claims.
Claims (10)
1. a kind of condensation test device, which is characterized in that including：
Chamber, the interior detection unit being equipped with for detecting experimental enviroment parameter in the chamber；
Aqua storage tank is connect by diversion pipe with the chamber, the interior heating being equipped with for heating the water in the aqua storage tank
Device, the ultrasonic atomization module for the water mist in the aqua storage tank to be turned to water mist and for into the aqua storage tank lead to
Enter the air-breather of gas；And
Control unit is filled with the detection unit, the heating device, the ultrasonic atomization module and the ventilation respectively
Connection is set to control the heating device, the ultrasonic atomization module and institute according to the testing result of the detection unit
State the working condition of air-breather.
2. condensation test device as described in claim 1, which is characterized in that further include：
Water level sensor, to detect the liquid level of the water in the aqua storage tank in the aqua storage tank；And
Priming apparatus is set in the aqua storage tank and adds water in the previous aqua storage tank；
Wherein, described control unit is connect respectively with the water level sensor and the priming apparatus to be passed according to the water level
The testing result of sensor controls the working condition of the priming apparatus.
3. condensation test device as claimed in claim 2, which is characterized in that further include：
Water temperature sensor, to detect the temperature of the water in the aqua storage tank in the aqua storage tank；
Wherein, described control unit is connect with the water temperature sensor to control institute according to the testing result of the water temperature sensor
State the working condition of heating device.
4. condensation test device as claimed in claim 3, which is characterized in that the detection unit includes：
Temperature sensor is connect with the detection unit, to detect the temperature in the chamber；And
Humidity sensor is connect with the detection unit, to detect the humidity in the chamber.
5. condensation test device as described in claim 1, which is characterized in that described control unit by first control circuit with
The ultrasonic atomization module connection；The first control circuit includes：
First controllable switch, first controllable switch include input, output end and control terminal, first controllable switch
Input terminal for being connect with power supply, the output end of first controllable switch is connect with the ultrasonic atomization module, described
The control terminal of first controllable switch is connect with described control unit.
6. condensation test device as claimed in claim 5, which is characterized in that the first control circuit further includes：
First switch power supply unit, the first switch power supply unit include input, output end and control terminal, and described first
The input terminal of Switching Power Supply with city's electric unit for connecting, the output end of the first switch power supply and first controllable switch
Input terminal connection, the control terminal of the first switch power supply connect with described control unit.
7. condensation test device as described in claim 1, which is characterized in that described control unit by second control circuit with
The heating device connection；The second control circuit includes：
Second controllable switch, second controllable switch include input, output end and control terminal, second controllable switch
Input terminal for being connect with power supply, the output end of second controllable switch is connect with the heating device, and described second can
The control terminal of control switch is connect with described control unit.
8. condensation test device as claimed in claim 7, which is characterized in that the second control circuit further includes：
Second switch power supply unit, the second switch power supply unit include input, output end and control terminal, and described second
The input terminal of Switching Power Supply with city's electric unit for connecting, the output end of the second switch power supply and second controllable switch
Input terminal connection, the control terminal of the second switch power supply connect with described control unit.
9. condensation test device as claimed in claim 4, which is characterized in that further include analog-digital converter, wherein the control
Unit by the analog-digital converter respectively with the water level sensor, the water temperature sensor, the temperature sensor and
The humidity sensor connection.
10. condensation test device as claimed in claim 9, which is characterized in that further include human-computer interaction interface, the man-machine friendship
Mutual interface is connect with described control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721301193.XU CN207650284U (en) | 2017-09-30 | 2017-09-30 | A kind of condensation test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721301193.XU CN207650284U (en) | 2017-09-30 | 2017-09-30 | A kind of condensation test device |
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| CN207650284U true CN207650284U (en) | 2018-07-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109541429A (en) * | 2018-12-28 | 2019-03-29 | 佛山科学技术学院 | A kind of photo-thermal electricity THM coupling device testing apparatus |
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2017
- 2017-09-30 CN CN201721301193.XU patent/CN207650284U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109541429A (en) * | 2018-12-28 | 2019-03-29 | 佛山科学技术学院 | A kind of photo-thermal electricity THM coupling device testing apparatus |
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