CN202075910U - AC frequency conversion multi-connected air conditioner integrated control system teaching instrument - Google Patents

AC frequency conversion multi-connected air conditioner integrated control system teaching instrument Download PDF

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Publication number
CN202075910U
CN202075910U CN2011201756770U CN201120175677U CN202075910U CN 202075910 U CN202075910 U CN 202075910U CN 2011201756770 U CN2011201756770 U CN 2011201756770U CN 201120175677 U CN201120175677 U CN 201120175677U CN 202075910 U CN202075910 U CN 202075910U
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CN
China
Prior art keywords
control system
billboard
air conditioner
integrated circuit
automatically controlled
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Expired - Lifetime
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CN2011201756770U
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Chinese (zh)
Inventor
陈粟宋
郑兆志
吴卓
李东洺
殷少有
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Shunde Vocational and Technical College
Shunde Polytechnic
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Shunde Vocational and Technical College
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Priority to CN2011201756770U priority Critical patent/CN202075910U/en
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Abstract

The present utility model discloses an AC frequency conversion multi-connected air conditioner integrated control system teaching instrument. The teaching instrument comprises an air conditioner host, an electric control system and a teaching instrument board. The electric control system comprises an electric control component, a sensor, an outdoor unit integrated circuit board, an indoor set integrated circuit board, an executive mechanism driven by the outdoor unit integrated circuit board and the indoor set integrated circuit board, a lightening proof module and a frequency conversion module. The teaching instrument board comprises a circuit principle board and an electric control mechanism board, a circuit schematic diagram of the air conditioner host is printed on the circuit principle board, an electric control system wiring diagram is printed on the front side of the electric control mechanism board, and the electric control component, the lightening proof module, the frequency conversion module, the outdoor unit integrated circuit board, and the indoor set integrated circuit board are arranged correspondingly on the front side of the electric control mechanism board. Conducting wires are connected on the back side of the electric control mechanism board according to the electric control system wiring diagram, thus the outdoor unit integrated circuit board and the indoor set integrated circuit board on the electric control mechanism board can be electrically connected with the executive mechanism. The experiment method of the teaching instrument is visual in principle and abundant in content, and the teaching instrument is especially suitable for having experiment teaching of the AC frequency conversion multi-connected air conditioner integrated control system for students majored in refrigeration, electricity and household electrical appliance, etc.

Description

A kind of AC frequency conversion multi-connected air conditioner integrated control system teaching appliance
Technical field
The utility model relates to the instruments used for education field, more particularly, relates to a kind of AC frequency conversion multi-connected air conditioner integrated control system teaching appliance.
Background technology
The AC frequency conversion multi-connected air conditioner uses the variable frequency adjustment technology; its cooling and warming speed is fast; indoor having a narrow range of temperature, comfortableness is good, and is energy-conservation again; and compressor can frequent starting; also prolonged serviceable life, noise is little, during winter heating; can under non-stop-machine situation, realize automatic defrosting, thereby be used widely.But the electric control system of converter technique and cooperate the refrigeration piping control system relative complex of frequency conversion capacity adjustment, and along with the increase of tenure of use, the complete machine performance also and then descends, and its hidden fault also rises greatly.At present, it also is not the grasp that very ripe, most service technician lacks core skills that the maintenance technique of AC frequency conversion multi-connected air conditioner is grasped, and its hidden fault can't be got rid of, and causes refrigeration/thermal effect variation.Decline also lacks the systematic study technology and enterprise is to performance.On the other hand, because the electric control system complexity makes the teaching of AC frequency conversion combined air conditioners machine technology have certain difficulty, knowledge such as operation mechanism study, electric assembly manipulation, fault diagnosis and maintenance are difficult to grasp, and lack visual and understandable educational aid.
Application number is that 200310116011.8 Chinese invention patent discloses portable ultra-thin passive Analogic Electronic Circuits experimental box, and structure comprises casing, bread board, the test jack that is lined with the shielded metal layer in it; Case bottom side rear panel is equipped with oscillograph wiring bayonet socket, function signal generator wiring bayonet socket, power supply wiring bayonet socket and ac millivoltmeter wiring bayonet socket, is electrically connected with oscillograph patch jack, function signal generator patch jack, power supply wiring jack and the ac millivoltmeter patch jack of front plate at the bottom of the case respectively; The loam cake of casing is connected respectively with identical self-locking device with the bottom surface with front at the bottom of the case; Case bottom side rear panel have be equipped with in the casing potentiometer and-5V~+ the 5V dc signal source.This invention adopts ultra-thin portable design also to have buckling and locking device, make things convenient for the student to preview after class or contrived experiment and storage transportation and Electro Magnetic Compatibility good.But this technical scheme only is applicable on some contrived experiments small-sized, relatively simple for structure, and the control system synthesis of AC frequency conversion multi-connected air conditioner converter technique, Refrigeration Technique, anti-lightning strike technology, principle of work, row's barrier maintenance skills be more complicated all, grasps also relatively difficulty.Some are as above-mentioned teaching small-sized, that simple teaching experimental tool can not solve large-scale complicated system, we need be with the circuit structure of mode display systems very intuitively, can allow the principle of work of student, the easier grasp AC frequency conversion of maintenance technique waiter multi-connected air conditioner, improve the maintenance skills level.
The utility model content
The utility model is at the deficiencies in the prior art, a kind of electric-control system teaching appliance that is used for integrated control principle teaching of AC frequency conversion multi-connected air conditioner and maintenance skills combined training is provided, can realize series training and experimental design functions such as the study of direct viewing type operation mechanism, assembly manipulation, running status indication, real time demonstration, performance follow-up study, to solve the problem that above-mentioned prior art exists.
The technical solution adopted in the utility model is: a kind of AC frequency conversion multi-connected air conditioner integrated control system teaching appliance comprises the air conditioner main frame, electric-control system and teaching appliance billboard, described electric-control system comprises, sensor, the off-premises station surface-mounted integrated circuit, the indoor set surface-mounted integrated circuit, topworks by described off-premises station surface-mounted integrated circuit and the driving of indoor set surface-mounted integrated circuit, described electric-control system also comprises anti-lightning strike module and frequency-variable module, described teaching appliance billboard comprises circuit theory billboard and automatically controlled mechanism billboard, on described circuit theory billboard, be printed with the circuit theory diagrams of air conditioner main frame, be printed with the electric-control system wiring diagram in the front of automatically controlled mechanism billboard and correspondence is equipped with automatically controlled components and parts, anti-lightning strike module, frequency-variable module, off-premises station surface-mounted integrated circuit and indoor set surface-mounted integrated circuit are pressed the electric-control system wiring diagram and are connected lead so that off-premises station surface-mounted integrated circuit on the automatically controlled mechanism billboard and indoor set surface-mounted integrated circuit are electrically connected with topworks at the back side of automatically controlled mechanism billboard.
Above-mentioned AC frequency conversion multi-connected air conditioner integrated control system teaching appliance is equipped with change-over panel in the front of automatically controlled mechanism billboard, and described change-over panel is electrically connected with the delivery outlet of surface-mounted integrated circuit, and described change-over panel is electrically connected with topworks.
Above-mentioned AC frequency conversion multi-connected air conditioner integrated control system teaching appliance is provided with a plurality of check points that are used to detect the electric signal parameter of place circuit on the front of circuit theory billboard and automatically controlled mechanism billboard.
Above-mentioned AC frequency conversion multi-connected air conditioner integrated control system teaching appliance is provided with the topworks status display area on automatically controlled mechanism billboard, be provided with in the described topworks status display area a plurality of respectively with the display lamp of different topworks's parallel connection.
Above-mentioned AC frequency conversion multi-connected air conditioner integrated control system teaching appliance, also comprise the module of placing obstacles, the described module of placing obstacles is by a plurality of automatically controlled components and parts of placing obstacles and the switch of placing obstacles of connecting with the automatically controlled components and parts that described experiment is placed obstacles, and the described switch of placing obstacles comprises closure in normality, disconnects, puts 0, puts 1 four kinds of states.
Above-mentioned AC frequency conversion multi-connected air conditioner integrated control system teaching appliance also is provided with the oscillograph that is used for gathering in real time the frequency-variable module frequency signal on automatically controlled mechanism billboard.
Compared with prior art, the utlity model has following advantage:
1) AC frequency conversion multi-connected air conditioner integrated control system teaching appliance of the present utility model, after the integral control circuit schematic diagram of complexity and electric-controlled parts connection mode carried out improvement and design, more directly perceived, clearly retouching can be on billboard, duty demonstration, live signal collection and the demonstration of electric-control system parts on billboard, have been increased simultaneously, the pcb board weak electric signal is measured and electric-control system parts forceful electric power signal measurement, more effectively improves AC frequency conversion multi-connected air conditioner integrated control system teaching efficiency.
2) this teaching appliance also is provided with fault functional module is set on billboard, and fault can be set artificially, more helps the real training exercise of fault detect and eliminating.
3) this teaching appliance is simple in structure, principle is directly perceived, is specially adapted to the experimental teaching of carrying out at general students of science and technology.
Description of drawings
Fig. 1 is the connection diagram of AC frequency conversion multi-connected air conditioner integrated control system teaching appliance of the present utility model;
Fig. 2 is the electric-control system wiring schematic diagram of automatically controlled mechanism billboard;
Fig. 3 is one of off-premises station surface-mounted integrated circuit principle of work circuit diagram of circuit theory billboard;
Fig. 4 be the circuit theory billboard off-premises station surface-mounted integrated circuit principle of work circuit diagram two;
Fig. 5 be the circuit theory billboard off-premises station surface-mounted integrated circuit principle of work circuit diagram three;
Fig. 6 is the anti-lightning strike module principle of work circuit diagram of circuit theory billboard;
Fig. 7 is an AC frequency conversion multi-connected air conditioner integrated control system teaching appliance billboard structural representation.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
The refrigeration work flow process of AC frequency conversion multi-connected air conditioner of the present utility model is as follows: in refrigeration cycle, invariable frequency compressor and frequency-changeable compressor suck the low-temperature low-pressure refrigerant steam that produces in the evaporator respectively, and the low-pressure state of maintenance evaporator, thereby created the condition that evaporator inner refrigerant liquid constantly seethes with excitement at low temperatures.Cold-producing medium is through compressor operating, and its temperature, pressure raise, and have created the condition that cold-producing medium can be liquefied at normal temperatures.The steam of High Temperature High Pressure is concentrated and to be discharged to oil separator and to converge, by main four-way valve and auxiliary four-way valve, enter condenser, under the situation that pressure remains unchanged, because the cooling heat dissipation effect of fan, emit heat, temperature reduces, and further condenses into liquid, discharge from condenser, enter fluid reservoir, to every indoor set electric expansion valve, condensed refrigerant liquid enters and carries out the throttling step-down in the electric expansion valve, because hindering refrigerant liquid flows, so its pressure descends, therefore just created condition for the vaporization in evaporator, refrigerant liquid is under the situation that pressure remains unchanged, absorption be cooled medium the heat that is cooled off (promptly producing cold) and vaporize, be accompanied by the transfer of heat, promptly by the extraneous the supply system cryogen latent heat of vaporization, the result is that evaporator external and ambient air are cooled.After cold-producing medium came out from evaporator, the steam that forms low-temp low-pressure was got back to gas-liquid separator, was siphoned away by compressor again, and so constantly circulation reaches refrigeration.
The AC frequency conversion multi-connected air conditioner heats workflow: when heating, the change of hot and cold function in system of air-conditioning is that the solenoid operated 4-way valve in the dependence system carries out, the inverse process when the cold-producing medium trend is refrigeration.When heating state, the indoor set electric expansion valve is in full-gear, does not do throttling, and the throttling step-down in the heating and the degree of superheat of regulating system are finished jointly by two electric expansion valves of off-premises station.
Each parts of AC frequency conversion air conditioner refrigeration system such as compressor, four-way valve and the valve body of each control refrigerant flow direction, the drive controlling of frequency-variable module are finished by integrated control system, teaching for AC frequency conversion combined air conditioners machine cooling system principle can be by the process flow diagram of drawing system structure and pipeline trend, make its principle of work of student's visual understanding, and the annexation of each cooling module.But, the investigation of the drive controlling method of AC frequency conversion multi-connected air conditioner, the circuit theory of integrated control system, the system failure and the teaching of diagnosis just need the teaching appliance of the special electric-control system of design to finish, thereby allow the student read by study practice voluntarily and judge, cultivate students'ability for practice, promote technical ability, be familiar with device structure, the principle of work and the electric control principle of AC frequency conversion multi-connected air conditioner carried out more deep research.
As shown in Figure 1, the AC frequency conversion multi-connected air conditioner is divided into refrigeration control system and two parts of electric control system, is made into two teaching appliance billboard (3,2) respectively, and two billboard are connected with air conditioner main frame 1.A billboard carries out improvement and design at electric control system, the wiring diagram of the electric hookup of air conditioner main frame 1, circuit theory diagrams, automatically controlled components and parts and the various experimental design devices that increase is printed on the facade and the plane of structure of aforesaid teaching appliance billboard 2 respectively.Again AC frequency conversion combined air conditioners machine host refrigerant system configurations is depicted as analogous diagram and is printed on the refrigeration piping system billboard 3, connect by operation circuit between two billboard.AC frequency conversion multi-connected air conditioner integrated control system teaching appliance of the present utility model carries out design of Simulation to electrical control system structure characteristics, operation logic and flow process, electric control system, circuit board schematic diagram to be drawn, and is printed on respectively on the circuit theory billboard 20 and 10 two billboard of automatically controlled mechanism billboard of teaching appliance.AC frequency conversion multi-connected air conditioner integrated control system teaching appliance comprises air conditioner main frame 1, electric-control system and teaching appliance billboard 2 (comprising circuit theory billboard 20 and automatically controlled mechanism billboard 10), the electric-control system topworks that comprises automatically controlled components and parts, sensor, off-premises station surface-mounted integrated circuit 11, indoor set surface-mounted integrated circuit 17, drive by described off-premises station surface-mounted integrated circuit 11 and indoor set surface-mounted integrated circuit 17 wherein, and electric-control system also comprises anti-lightning strike module 8 and frequency-variable module 9.In order to allow the student learn electric-control system intuitively, on the circuit theory billboard, be printed with the circuit theory diagrams of air conditioner, the wiring diagram and the correspondence that are printed with automatically controlled components and parts in the front of automatically controlled mechanism billboard are equipped with automatically controlled components and parts, frequency-variable module 9, anti-lightning strike module 8 and off-premises station surface-mounted integrated circuit 11, indoor set surface-mounted integrated circuit 17, and on the billboard circuit of each parts connect and plate on each parts (comprise off-premises station surface-mounted integrated circuit 11, indoor set surface-mounted integrated circuit 17) with the compressor of air conditioner main frame 1, four-way valve, on the back side of billboard, carrying out being connected all of each valve body of control cold-producing medium and heating, cooperate the display lamp of reflection air conditioner main frame critical component duty and the oscillograph that reflects the frequency real-time parameter of AC frequency conversion multi-connected air conditioner, make the structure and the principle of work of the easier grasp AC frequency conversion of student multi-connected air conditioner integrated control system, reach the purpose of being convenient to impart knowledge to students.
See Fig. 2 and Fig. 7, on the front of automatically controlled mechanism billboard 10 outside the printing office automatically controlled components and parts such as surface-mounted integrated circuit 11, indoor set surface-mounted integrated circuit 17 and transformer, blower fan electric capacity, relay, A.C. contactor be connected wiring diagram, comprise that wiring schematic diagram, the off-premises station surface-mounted integrated circuit 11 of the temperature sensing circuit that is connected with off-premises station surface-mounted integrated circuit 11 input ports is connected wiring diagram etc. with compressor, blower fan; And on corresponding position, off-premises station surface-mounted integrated circuit 11 and indoor set surface-mounted integrated circuit 17 are installed, the corresponding automatically controlled components and parts that correspondence is installed in automatically controlled components and parts installing zone 12, above the positive right side of face of billboard, oscillograph 15 is housed, other at oscillograph is topworks status display area 14 (topworks status display area 14 also can be located at oscillographic below), in this zone, frequency-changeable compressor is housed, the quota compressor, main four-way valve, auxiliary four-way valve, a plurality of solenoid valves, the duty display lamp of critical components such as suction pump motor makes the real-time running state of each parts very clear.The circuit theory diagrams of printing AC frequency conversion multi-connected air conditioner on circuit theory billboard 20 fronts, circuit theory diagrams are consistent with wiring diagram on automatically controlled mechanism billboard 10 fronts, when lecturing the electric-control system of AC frequency conversion multi-connected air conditioner, can explain in conjunction with peripheral wiring of the automatically controlled components and parts that indicated on automatically controlled mechanism billboard 10 and the circuit theory billboard 20 and internal circuit principle simultaneously, can improve the effect of giving lectures greatly, make teaching more vivid, visual and understandable.And are wire areas of electric-control system at the back side of automatically controlled mechanism billboard 10 and the bottom surface of circuit theory billboard 20, finish the connection of each element on the billboard, and being connected in the wire harness groove that lead can be inserted in 1 in teaching appliance billboard 2 and air conditioner main frame of the parts on element and the main frame on the billboard.Simultaneously, for the driving that makes the topworkies such as compressor on surface-mounted integrated circuit and the air conditioner main frame on the teaching appliance billboard 2 is connected more convenient, on automatically controlled mechanism billboard 10 change-over panel 13 is housed, change-over panel is connected with topworkies such as the delivery outlet of surface-mounted integrated circuit, compressor, blower fan, four-way valves respectively.And illustrate the check point 18 that also is provided with a plurality of electric signal parameters at the back side of automatically controlled mechanism billboard 10 and the printing of circuit theory billboard 20, check point on the circuit theory billboard 20 is connected with the circuit lead of automatically controlled mechanism billboard 10, by check point being carried out voltage, the isoparametric measurement of resistance, can check, judge the real-time working state of check point place circuit, help the working mechanism of the dynamo-electric control of learning and communication multi-evaporator inverter air conditioner system.The utility model also is provided with the functional module that fault is provided with on teaching appliance billboard 2, the module of placing obstacles is placed in the drawer 30 of teaching appliance billboard 2, the connection lead is drawn from the back of drawer and is connected with the circuit of automatically controlled mechanism billboard 10, automatically controlled components and parts that the module of placing obstacles is placed obstacles by a plurality of experiments and the switch of placing obstacles that is connected with automatically controlled components and parts are formed, the switch of placing obstacles is closed under normal conditions, under the state of placing obstacles, manually open, the circuit that connects these automatically controlled components and parts of placing obstacles is disconnected, the phenomenon of fault artificially is set.The module of placing obstacles is divided into placing obstacles of strong power system and placing obstacles of weak electricity system, the weak current part experiment place obstacles as: anti-phase horse driver to SV16 open circuit, rp-drive to the RY9 relay open circuit, the SV1 relay damaged of solenoid valve, A detect the resistance damage mutually, level pressure machine exhaust temperature sensor opens circuit, fault settings such as transformation machine exhaust temperature sensor opens circuit, frequency-variable module damage, indoor temperature transmitter damage, the damage of evaporator outlet temperature sensor.
The utility model has carried out the control mechanism displaying according to emulation electrical control wiring system, two parts of artificial circuit principle system to AC frequency conversion combined air conditioners machine technology, and can gather frequency variation signal in real time and demonstrate its oscillogram.Inserted crucial weak electric signal and typical forceful electric power electrical measurement point, the typical most common failure of light current and forceful electric power has been designed integrated fault setting device.Adopt actual situation in conjunction with design, material objects such as circuit board that whole electric control system comprised, electric components are carried out true wiring connect on emulation electrical control wiring system figure, realized the perfect adaptation that true operation of electric control system and emulation mechanism are demonstrated.Realized the dry run indication of all electric topworkies.
Fig. 3 to Fig. 6 is the sub-circuit schematic diagram of AC frequency conversion multi-connected air conditioner, wherein, Fig. 3 is one of off-premises station surface-mounted integrated circuit principle of work circuit diagram, Fig. 4 is two of an off-premises station surface-mounted integrated circuit principle of work circuit diagram, Fig. 5 is three of an off-premises station surface-mounted integrated circuit principle of work circuit diagram, and Fig. 6 is anti-lightning strike module principle of work circuit diagram.
On refrigeration piping system billboard 3, a plurality of key position operation thermal parameter collection demonstrations and the electrical parameter that are provided with the air conditioner main frame show, have inserted all kinds of operation valve indications and signal measurement point in the simulation flow control.Electric expansion valve can be true to nature the demonstration aperture.And on-line execute and simulation run conversion equipment have been designed.Control section to service system is provided with failed equipment.Make teaching appliance of the present utility model can on billboard, carry out simulation operations, Long-distance Control and truly move two kinds of patterns.And realize system synthesis study, training and experimental design functions such as running status indication, signal measurement, fault setting, signals collecting and real time demonstration, performance indication.

Claims (6)

1. AC frequency conversion multi-connected air conditioner integrated control system teaching appliance, comprise air conditioner main frame (1), electric-control system and teaching appliance billboard (2), described electric-control system comprises automatically controlled components and parts, sensor, off-premises station surface-mounted integrated circuit (11), indoor set surface-mounted integrated circuit (17), topworks by described off-premises station surface-mounted integrated circuit (11) and indoor set surface-mounted integrated circuit (17) driving, described electric-control system also comprises anti-lightning strike module (8) and frequency-variable module (9), it is characterized in that: described teaching appliance billboard (2) comprises circuit theory billboard (20) and automatically controlled mechanism billboard (10), on described circuit theory billboard (20), be printed with the circuit theory diagrams of air conditioner main frame (1), be printed with the electric-control system wiring diagram in the front of automatically controlled mechanism billboard (10) and correspondence is equipped with automatically controlled components and parts, anti-lightning strike module (8), frequency-variable module (9), off-premises station surface-mounted integrated circuit (11) and indoor set surface-mounted integrated circuit (17) are pressed the electric-control system wiring diagram and are connected lead so that off-premises station surface-mounted integrated circuit (11) on the automatically controlled mechanism billboard (10) and indoor set surface-mounted integrated circuit (17) are electrically connected with topworks at the back side of automatically controlled mechanism billboard (10).
2. AC frequency conversion multi-connected air conditioner integrated control system teaching appliance according to claim 1, it is characterized in that: change-over panel (13) is housed in the front of automatically controlled mechanism billboard, described change-over panel (13) is electrically connected with the delivery outlet of off-premises station surface-mounted integrated circuit (11), and described change-over panel (13) is electrically connected with topworks.
3. AC frequency conversion multi-connected air conditioner integrated control system teaching appliance according to claim 1 is characterized in that: be provided with a plurality of check points (18) that are used to detect the electric signal parameter of place circuit on the front of automatically controlled mechanism billboard (10) and circuit theory billboard (20).
4. according to claim 2 or 3 described AC frequency conversion multi-connected air conditioner integrated control system teaching appliances, it is characterized in that: on automatically controlled mechanism billboard, be provided with topworks status display area (14), be provided with in described topworks status display area (14) a plurality of respectively with the display lamp of different topworks's parallel connection.
5. AC frequency conversion multi-connected air conditioner integrated control system teaching appliance according to claim 4, it is characterized in that: also comprise the module of placing obstacles, the switch of placing obstacles that the described module of placing obstacles is connected by the automatically controlled node that a plurality of automatically controlled nodes of placing obstacles reach with described experiment is placed obstacles, the described switch of placing obstacles comprises closure, disconnects, puts 0, puts 1 four kinds of states.
6. AC frequency conversion multi-connected air conditioner integrated control system teaching appliance according to claim 5 is characterized in that: also be provided with the oscillograph (15) that is used for gathering in real time the frequency-variable module frequency signal on automatically controlled mechanism billboard (10).
CN2011201756770U 2011-05-27 2011-05-27 AC frequency conversion multi-connected air conditioner integrated control system teaching instrument Expired - Lifetime CN202075910U (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102194363A (en) * 2011-05-27 2011-09-21 顺德职业技术学院 Teaching instrument for alternating-current variable-frequency multi-unit air conditioner integrated control system
CN102214408A (en) * 2011-05-28 2011-10-12 顺德职业技术学院 Integrated control system teaching instrument of digital intelligent vortex multi-connection air conditioner
CN103473979A (en) * 2013-09-11 2013-12-25 广东交通职业技术学院 Teaching practical training platform for air conditioner comprehensive performance test
CN103745623A (en) * 2013-12-25 2014-04-23 柳州城市职业学院 Frequency conversion air conditioner computer board training bench
CN104091510A (en) * 2014-06-27 2014-10-08 顺德职业技术学院 Household air conditioner microcomputer control technology combined training equipment
CN104821115A (en) * 2015-05-14 2015-08-05 广州番禺职业技术学院 Multifunctional optical fiber tester
CN104827453A (en) * 2015-05-14 2015-08-12 广州番禺职业技术学院 FTTH (Fiber To The Home)-based optical fiber engineering toolbox
CN105513488A (en) * 2016-02-29 2016-04-20 常州机电职业技术学院 Experimental teaching instrument equipment for electrical system of excavator
CN106128274A (en) * 2016-06-24 2016-11-16 张湘粤 A kind of separate type air conditioner skills practice training device

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102194363A (en) * 2011-05-27 2011-09-21 顺德职业技术学院 Teaching instrument for alternating-current variable-frequency multi-unit air conditioner integrated control system
CN102194363B (en) * 2011-05-27 2013-02-13 顺德职业技术学院 Teaching instrument for alternating-current variable-frequency multi-unit air conditioner integrated control system
CN102214408A (en) * 2011-05-28 2011-10-12 顺德职业技术学院 Integrated control system teaching instrument of digital intelligent vortex multi-connection air conditioner
CN103473979A (en) * 2013-09-11 2013-12-25 广东交通职业技术学院 Teaching practical training platform for air conditioner comprehensive performance test
CN103473979B (en) * 2013-09-11 2016-06-01 广东交通职业技术学院 Air conditioner comprehensive performance test practice teaching platform
CN103745623A (en) * 2013-12-25 2014-04-23 柳州城市职业学院 Frequency conversion air conditioner computer board training bench
CN104091510A (en) * 2014-06-27 2014-10-08 顺德职业技术学院 Household air conditioner microcomputer control technology combined training equipment
CN104091510B (en) * 2014-06-27 2016-05-18 顺德职业技术学院 A kind of domestic air conditioning microcomputerized control technological synthesis exercise equipment
CN104821115A (en) * 2015-05-14 2015-08-05 广州番禺职业技术学院 Multifunctional optical fiber tester
CN104827453A (en) * 2015-05-14 2015-08-12 广州番禺职业技术学院 FTTH (Fiber To The Home)-based optical fiber engineering toolbox
CN105513488A (en) * 2016-02-29 2016-04-20 常州机电职业技术学院 Experimental teaching instrument equipment for electrical system of excavator
CN106128274A (en) * 2016-06-24 2016-11-16 张湘粤 A kind of separate type air conditioner skills practice training device

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