CN102930774A - Experiment bench circuit for demonstrating working of automotive air conditioning electromagnetic clutch - Google Patents
Experiment bench circuit for demonstrating working of automotive air conditioning electromagnetic clutch Download PDFInfo
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- CN102930774A CN102930774A CN2012104271836A CN201210427183A CN102930774A CN 102930774 A CN102930774 A CN 102930774A CN 2012104271836 A CN2012104271836 A CN 2012104271836A CN 201210427183 A CN201210427183 A CN 201210427183A CN 102930774 A CN102930774 A CN 102930774A
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- switch
- electromagnetic clutch
- air conditioning
- air conditioner
- evaporator temperature
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- Air-Conditioning For Vehicles (AREA)
Abstract
The invention discloses an experiment bench circuit for demonstrating the working of an automotive air conditioning electromagnetic clutch. The experiment bench circuit comprises a storage battery, an ignition switch, an air conditioning switch, a low-voltage switch, a high-voltage switch, an evaporator temperature switch, an environment temperature switch and an electromagnetic clutch working indicator. A positive electrode of the storage battery is connected with the ignition switch; and the ignition switch, the air conditioning switch, the low-voltage switch, the high-voltage switch, the evaporator temperature switch, the environment temperature switch and the electromagnetic clutch working indicator are sequentially connected in series. The experiment bench circuit can be used for simulating the working process of the automotive air conditioning electromagnetic clutch. The working principle and working process of the automotive air conditioning electromagnetic clutch can be clearly displayed by using the experiment bench circuit through the operation of teachers or students on the switches.
Description
Technical field
The present invention relates to teaching and use experimental circuit, particularly relate to a kind of automobile air conditioner electromagnetic clutch work lecture experiment stand circuit.
Background technology
At present, automobile air conditioner electromagnetic clutch work lecture experiment stand is general to adopt real parts to make, and can not intuitively reflect its principle of work and the course of work when experiment, causes the student to be difficult to correct understanding and grasps relevant knowledge technical ability; And whole experimental stand is bulky, and cost of manufacture is very expensive, and safety, environmental protection during on experiment also have certain impact.
Summary of the invention
For above-mentioned prior art, the technical problem to be solved in the present invention provides a kind of automobile air conditioner electromagnetic clutch work lecture experiment stand circuit, with the advantage that realizes that experiment effect is good, simple in structure, cost is low and security is good.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of automobile air conditioner electromagnetic clutch work lecture experiment stand circuit comprises accumulator, ignition switch, air-conditioning switch, low tension switch, high-voltage switch gear, evaporator temperature switch, ambient thermostatic switch and electromagnetic clutch relay indicating light; Wherein, the positive pole of described accumulator is connected with ignition switch; Ignition switch, air-conditioning switch, low tension switch, high-voltage switch gear, evaporator temperature switch, ambient thermostatic switch, electromagnetic clutch relay indicating light are connected in series successively.
As improvement of the present invention, the low tension switch of this experimental stand, high-voltage switch gear, evaporator temperature switch, ambient thermostatic switch adopt rotary switch to simulate.
As a further improvement on the present invention, rotary switch is marked with the critical data scale, and "+" expression numerical value increases, and "-" expression numerical value reduces.
A kind of automobile air conditioner electromagnetic clutch work lecture experiment stand circuit of the present invention, owing to comprising accumulator, ignition switch, air-conditioning switch, low tension switch, high-voltage switch gear, evaporator temperature switch, ambient thermostatic switch, electromagnetic clutch relay indicating light, the display automobile air conditioner electric magnet clutch course of work that can be directly perceived, eye-catching; The low tension switch of this experimental stand, high-voltage switch gear, evaporator temperature switch, ambient thermostatic switch adopt rotary switch to simulate, thereby realize that experiment effect is good, simple in structure, cost is low, advantage that security and the feature of environmental protection are good.
Description of drawings
Fig. 1 is control circuit of electromagnetic clutch for automotive air conditioner figure;
Fig. 2 is the experiment rack circuit schematic diagram.
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing the specific embodiment of the present invention is described in detail.
As shown in Figure 1, a kind of automobile air conditioner electromagnetic clutch work lecture experiment stand circuit comprises accumulator 1, ignition switch 2, air-conditioning switch 3, low tension switch 4, high-voltage switch gear 5, evaporator temperature switch 6, ambient thermostatic switch 7, electromagnetic clutch relay indicating light 8.Wherein, the positive pole of accumulator 1 is connected with ignition switch 2; Ignition switch 2, air-conditioning switch 3, low tension switch 4, high-voltage switch gear 5, evaporator temperature switch 6, ambient thermostatic switch 7 and electromagnetic clutch relay indicating light 8 are connected in series successively.
As shown in Figure 2, the low tension switch 4 of experimental stand, high-voltage switch gear 5, evaporator temperature switch 6, ambient thermostatic switch 7 all adopt rotary switch to simulate.Rotary switch is marked with the critical data scale, and "+" expression numerical value increases, and "-" expression numerical value reduces.
In the above-described embodiments, the automobile air conditioner electromagnetic clutch working environment obtains by the switch simulation.Automobile air conditioner electromagnetic clutch is subjected to the controls such as air-conditioning switch, temperature detect switch (TDS), pressure switch, switches on or off the transmission of power between engine and the compressor in needs.In addition, when overload of compressor, it can also play certain protective effect.Automobile air conditioner electromagnetic clutch is comparatively typical electromechanical integrated product.Wherein, solenoid is fixed on the shell of compressor, and driving-disc is connected with the main shaft of compressor, and belt pulley is installed in compressor head by bearing and covers, and can freely rotate.When air-conditioning switch was connected, electric current was by the solenoid of electromagnetic clutch, and solenoid produces electromagnetic attraction, and the driving-disc of compressor is combined with belt pulley, and the moment of torsion of engine is passed to compressor main shaft, and compressor main shaft is rotated.When disconnecting air-conditioning switch, the suction of solenoid disappears, and driving-disc and belt pulley break away under the spring leaf effect, and compressor quits work.According to above-mentioned automobile air conditioner electromagnetic clutch work principle of work, low tension switch, high-voltage switch gear all are installed on the pressure duct of refrigeration system of air conditioning for automobiles, low tension switch is closed more than 0.2MPa, disconnects below 0.2MPa, prevents that refrigeration system from working without under the refrigerant condition; High-voltage switch gear is closed below 3MPa, disconnects more than 3MPa, prevents the refrigeration system hypertonia and makes pipelines from bursting, and they all play the safeguard protection effect to system.The evaporator temperature switch is installed near the evaporator, and the evaporator temperature switch is closed more than 0 ℃, and the evaporator temperature switch disconnects below 0 ℃, and its effect is that the device surface that avoids evaporating freezes.Ambient thermostatic switch testing environment temperature, closed in time more than 7 ℃, disconnect in time below 7 ℃, prevent from when temperature is low, also opening air-conditioning, play energy-conserving action., other switch closed in ignition switch and air-conditioning switch satisfies closure condition, be the refrigeration system high pressure end pressure between 0.2MPa to 3MPa, evaporator temperature more than 0 ℃, environment temperature is more than 7 ℃ the time, the adhesive of air conditioner electric magnet clutch, compressor of air conditioner work.As long as one of them and above switch do not satisfy condition and disconnect, then not adhesive of air conditioner electric magnet clutch, compressor is not worked.
In the above-described embodiments, as shown in Figure 2, the low tension switch of this experimental stand, high-voltage switch gear, evaporator temperature switch, ambient thermostatic switch all adopt rotary switch to simulate, and put on the critical data scale at switch, "+" expression numerical value increases, and "-" expression numerical value reduces.As the critical scale of simulating low tension switch is 0.2MPa, and below 0.2MPa, switch disconnects, and then is closed at the above switch of 0.2MPa; The critical scale of simulated high-pressure switch is 3MPa, and below 3MPa, switch is closed, then disconnects at the above switch of 3MPa; The critical scale of simulation evaporator temperature switch is 0 ℃, and below 0 ℃, switch disconnects, and then is closed at switch more than 0 ℃; The critical scale of simulated environment temperature switch is 7 ℃, and below 7 ℃, switch disconnects, and then is closed at switch more than 7 ℃.Electromagnetic clutch replaces with relay indicating light, the adhesive of the bright expression electromagnetic clutch of pilot lamp, and compressor of air conditioner work, pilot lamp does not work, and then represents not adhesive of electromagnetic clutch, and compressor of air conditioner is not worked.
A kind of automobile air conditioner electromagnetic clutch work lecture experiment stand circuit of above-described embodiment, real time status by each switch simulation air conditioning for automobiles condition of work in the circuit, as long as one of them and above switch do not satisfy condition and disconnect, then not adhesive of air conditioner electric magnet clutch, compressor is not worked, so clearly principle of work and the course of work of display automobile air conditioner electric magnet clutch.
The above has done detailed description to embodiments of the present invention by reference to the accompanying drawings, but the present invention is not limited to above-mentioned embodiment, in the ken that those of ordinary skills possess, can also not break away under the prerequisite of aim of the present invention and make various variations.
Claims (3)
1. automobile air conditioner electromagnetic clutch work lecture experiment stand circuit, it is characterized in that: this circuit comprises accumulator (1), ignition switch (2), air-conditioning switch (3), low tension switch (4), high-voltage switch gear (5), evaporator temperature switch (6), ambient thermostatic switch (7), electromagnetic clutch relay indicating light (8); Wherein, the positive pole of described accumulator (1) is connected with ignition switch (2); Described ignition switch (2), air-conditioning switch (3), low tension switch (4), high-voltage switch gear (5), evaporator temperature switch (6), ambient thermostatic switch (7) and electromagnetic clutch relay indicating light (8) are connected in series successively.
2. a kind of automobile air conditioner electromagnetic clutch work lecture experiment stand circuit according to claim 1, it is characterized in that, the low tension switch of experimental stand (4), high-voltage switch gear (5), evaporator temperature switch (6), ambient thermostatic switch (7) all adopt rotary switch to simulate.
3. a kind of automobile air conditioner electromagnetic clutch work lecture experiment stand circuit according to claim 2 is characterized in that, described rotary switch is marked with the critical data scale, and "+" expression numerical value increases, and "-" expression numerical value reduces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104271836A CN102930774A (en) | 2012-10-31 | 2012-10-31 | Experiment bench circuit for demonstrating working of automotive air conditioning electromagnetic clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104271836A CN102930774A (en) | 2012-10-31 | 2012-10-31 | Experiment bench circuit for demonstrating working of automotive air conditioning electromagnetic clutch |
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| Publication Number | Publication Date |
|---|---|
| CN102930774A true CN102930774A (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012104271836A Pending CN102930774A (en) | 2012-10-31 | 2012-10-31 | Experiment bench circuit for demonstrating working of automotive air conditioning electromagnetic clutch |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202093732U (en) * | 2011-06-08 | 2011-12-28 | 龚文资 | Analog circuit capable of controlling condenser fan via automobile air conditioner switch and water temperature switch |
| CN202871178U (en) * | 2012-10-31 | 2013-04-10 | 无锡商业职业技术学院 | Experiment bench circuit for work demonstration of automobile air-conditioning electromagnetic clutch |
-
2012
- 2012-10-31 CN CN2012104271836A patent/CN102930774A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202093732U (en) * | 2011-06-08 | 2011-12-28 | 龚文资 | Analog circuit capable of controlling condenser fan via automobile air conditioner switch and water temperature switch |
| CN202871178U (en) * | 2012-10-31 | 2013-04-10 | 无锡商业职业技术学院 | Experiment bench circuit for work demonstration of automobile air-conditioning electromagnetic clutch |
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Application publication date: 20130213 |