CN203163166U - Control system for outdoor fan of single refrigeration air conditioner - Google Patents
Control system for outdoor fan of single refrigeration air conditioner Download PDFInfo
- Publication number
- CN203163166U CN203163166U CN 201320092134 CN201320092134U CN203163166U CN 203163166 U CN203163166 U CN 203163166U CN 201320092134 CN201320092134 CN 201320092134 CN 201320092134 U CN201320092134 U CN 201320092134U CN 203163166 U CN203163166 U CN 203163166U
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- Prior art keywords
- compressor
- outdoor fan
- bidirectional thyristor
- pressure
- outdoor
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Abstract
Disclosed is a control system for an outdoor fan of a single refrigeration air conditioner. A pressure sensor and a gate pole (G) of a bidirectional thyristor are respectively connected to a control board of the outdoor fan, the outdoor fan is connected onto an electric power circuit through main terminals (T1 and T2) of the bidirectional thyristor, and the pressure at an exhaust port of a compressor is detected in real time by the pressure sensor and serves as operating pressure of the compressor. When the operating pressure of the compressor is normal, the bidirectional thyristor is conducted forward, the outdoor fan is constantly operated, and an outdoor heat exchanger can sufficiently exchange heat. When the operating pressure of the compressor is excessive, the bidirectional thyristor is reversely conducted, the outdoor fan is powered off and is in an off state, the heat exchange capacity of the outdoor heat exchanger is rapidly reduced, the requirement of the air conditioner for capacity of the compressor is lowered, the operating pressure of the compressor drops, so that an internal protection switch of the compressor no longer frequently acts, frequent start and stop of the compressor are avoided, and the compressor is protected.
Description
Technical field
The utility model relates to a kind of control system of the outdoor fan for single refrigeration air-conditioner, belongs to the overvoltage protection field of compressor of air conditioner.
Background technology
At present, the course of work of refrigerant is in single refrigeration air-conditioner: compressor compresses gas coolant, discharge high temperature and high pressure gas; Refrigerant flows to outdoor heat exchanger, and outdoor fan is opened, and carries out heat exchange by outdoor heat exchanger and outdoor environment air, discharges the heat in the cold-producing medium, and refrigerant becomes high temperature high pressure liquid; Refrigerant becomes the low-temp low-pressure gas-liquid mixture through capillary-compensated by high temperature high pressure liquid; Refrigerant arrives indoor heat exchanger again, evaporates heat in the absorption chamber, becomes the gas of low-temp low-pressure; Refrigerant is got back to compressor.
During the hypertonia of the high temperature and high pressure gas that aforementioned compressor is got rid of, the built-in protection switch of compressor just can stop compressor operating, the overvoltage protection of Here it is compressor.If the reason of untimely eliminating hypertonia, thereby compressor just can damage the phenomenon of compressors because of overvoltage protection frequent start-stop meeting bad student burn-down of electric motor, lubricated destruction etc.
The utility model content
The utility model is to solve the frequent start-stop problem that above-mentioned compressor causes because of overvoltage protection.
For this reason, the utility model provides a kind of control system of the outdoor fan for single refrigeration air-conditioner, comprise compressor, off-premises station control panel, outdoor fan, it is characterized in that: also comprise bidirectional thyristor, be installed in the pressure sensor of the exhaust ports of compressor; The gate pole of aforementioned pressure sensor, bidirectional thyristor is connected respectively on the off-premises station control panel; Aforementioned outdoor fan is connected on the power circuit through the main terminal of bidirectional thyristor.
The control system of the outdoor fan for single refrigeration air-conditioner of the present utility model, pressure sensor implements to detect the pressure at expulsion of compressor; When the pressure at expulsion of compressor was less than or equal to the maximum allowable working pressure of compressor, the off-premises station control panel sent positive triggering signal to the gate pole of bidirectional thyristor, bidirectional thyristor direction forward conduction, outdoor fan operation; When the pressure at expulsion of compressor during greater than the maximum allowable working pressure of compressor, the off-premises station control panel sends negative triggering signal to the gate pole of bidirectional thyristor, the conducting of bidirectional thyristor direction, and outdoor fan stops.
Bidirectional thyristor claims bidirectional triode thyristor again, and it belongs to NPNPN five layer devices, has gate pole, anode, three electrodes of negative electrode.The forward and reverse characteristic curve of the C-V characteristic of bidirectional thyristor has symmetry, so but its two-way admittance, main terminal is no longer distinguished, is referred to as to anode, negative electrode sometimes.When adding positive triggering signal on the gate pole, the main terminal forward conduction of bidirectional thyristor; Add when bearing triggering signal the bidirectional thyristor reverse-conducting on the gate pole.
By analysis, causing the high efficiency heat exchange of outdoor heat exchanger owing to outdoor environment temperature is too high, cause air-conditioning that the ability need of compressor is raise, is the too high main cause of Compressor Discharge Pressure.
The utility model wonderful characteristic of bidirectional thyristor of having utilized ingeniously comes the switch outdoor fan: the exhaust ports pressure that detects compressor in real time with pressure sensor is used as the operating pressure of compressor; When the operating pressure of compressor just often, bidirectional thyristor forward conduction, outdoor fan are in running status all the time, outdoor heat exchanger is able to abundant heat exchange; When the operating pressure of compressor is too high; the bidirectional thyristor reverse-conducting; outdoor fan is turned off power supply and is in closed condition; the exchange capability of heat of outdoor heat exchanger reduces rapidly; air-conditioning reduces the ability need of compressor; the operating pressure of compressor descends, thus the built-in protection switch of compressor no longer frequent movement cause the high frequent start and stop, like this compressor is protected.
In addition, the bidirectional thyristor in this utility model is as the switch of outdoor fan, and is more superior than mechanical switch.Because only need very low control power, just can control sizable electric current, there is not the contact chatter problem in it, and responsiveness is exceedingly fast, and also arc phenomenon can not occur when turn-offing.
Description of drawings
Further specify the utility model below in conjunction with the drawings and specific embodiments.
Fig. 1 is the control system of the outdoor fan for single refrigeration air-conditioner of the present utility model;
Fig. 2 is the control method of the control system of the outdoor fan for single refrigeration air-conditioner shown in Figure 1.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
As shown in Figure 1, should be used for the control system of the outdoor fan of single refrigeration air-conditioner, and comprise compressor, off-premises station control panel, outdoor fan, blower fan electric capacity, bidirectional thyristor, be installed in the pressure sensor of the exhaust ports of compressor.Wherein, compressor is connected on the power circuit between live wire L and zero line N; The gate pole G of pressure sensor, bidirectional thyristor is connected respectively on the off-premises station control panel; Gate pole G and main terminal T1 are close, and T2 is far away apart from main terminal; Outdoor fan is connected on the zero line N through the main terminal T1 of bidirectional thyristor, and main terminal T2 is connected on the outdoor fan, is connected on the live wire L after outdoor fan and the parallel connection of blower fan electric capacity.
As shown in Figure 2, be somebody's turn to do the control method of the control system of the outdoor fan that is used for single refrigeration air-conditioner, the off-premises station control panel is according to the operating condition control outdoor fan of compressor, and the concrete operations step is as follows:
Step 1: single refrigeration air-conditioner start operation;
Step 2: pressure sensor implements to detect the pressure at expulsion of compressor;
Does step 3: the off-premises station control panel judge that the pressure at expulsion of compressor sets up greater than the maximum allowable working pressure of compressor? if enter step 7; If not, enter next step.
Step 4: the off-premises station control panel sends positive triggering signal to the gate pole G of bidirectional thyristor;
Step 5: the bidirectional thyristor forward conduction, namely conducting direction is main terminal T2-main terminal T1;
Step 6: the outdoor fan operation, and return above-mentioned steps 3 and continue circulation;
Step 7: the off-premises station control panel sends negative triggering signal to the gate pole G of bidirectional thyristor;
Step 8: the conducting of bidirectional thyristor direction, namely conducting direction is main terminal T1-main terminal T2; Because bidirectional thyristor commutation conducting is passed through and there is no the current of commutation in the circuit, so the power circuit between outdoor fan place live wire L and zero line N is turned off;
Step 9: outdoor fan stops, and returns above-mentioned steps 3 and continue circulation; After outdoor fan stopped, the exchange capability of heat of outdoor heat exchanger descended rapidly, and air-conditioning reduces the ability need of compressor, and the operating pressure of compressor descends.
As from the foregoing, the utility model ingeniously the wonderful characteristic of bidirectional thyristor of having utilized come the switch outdoor fan: the exhaust ports pressure that detects compressor in real time with pressure sensor is used as the operating pressure of compressor; When the operating pressure of compressor just often, bidirectional thyristor forward conduction, outdoor fan are in running status all the time, outdoor heat exchanger is able to abundant heat exchange; When the operating pressure of compressor is too high; the bidirectional thyristor reverse-conducting; outdoor fan is turned off power supply and is in closed condition; the exchange capability of heat of outdoor heat exchanger reduces rapidly; air-conditioning reduces the ability need of compressor; the operating pressure of compressor descends, thus the built-in protection switch of compressor no longer frequent movement cause the high frequent start and stop, like this compressor is protected.
In addition, the bidirectional thyristor in this utility model is as the switch of outdoor fan, and is more superior than mechanical switch.Because only need very low control power, just can control sizable electric current, there is not the contact chatter problem in it, and responsiveness is exceedingly fast, and also arc phenomenon can not occur when turn-offing.
More than be one of embodiment of the present utility model, for those skilled in the art, do not spend performing creative labour, on the basis of above-described embodiment, can do multiple variation, can realize the purpose of this utility model equally.But this variation obviously should be in the protection domain of claims of the present utility model.
Claims (1)
1. be used for the control system of the outdoor fan of single refrigeration air-conditioner, comprise compressor, off-premises station control panel, outdoor fan, it is characterized in that: also comprise bidirectional thyristor, be installed in the pressure sensor of the exhaust ports of compressor; The gate pole of aforementioned pressure sensor, bidirectional thyristor (G) is connected respectively on the off-premises station control panel; Aforementioned outdoor fan is connected on the power circuit through the main terminal (T1, T2) of bidirectional thyristor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320092134 CN203163166U (en) | 2013-02-28 | 2013-02-28 | Control system for outdoor fan of single refrigeration air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320092134 CN203163166U (en) | 2013-02-28 | 2013-02-28 | Control system for outdoor fan of single refrigeration air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203163166U true CN203163166U (en) | 2013-08-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320092134 Expired - Lifetime CN203163166U (en) | 2013-02-28 | 2013-02-28 | Control system for outdoor fan of single refrigeration air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203163166U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148562A (en) * | 2013-02-28 | 2013-06-12 | 宁波奥克斯空调有限公司 | Control system for outdoor blower of single refrigeration air conditioner and control method thereof |
-
2013
- 2013-02-28 CN CN 201320092134 patent/CN203163166U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148562A (en) * | 2013-02-28 | 2013-06-12 | 宁波奥克斯空调有限公司 | Control system for outdoor blower of single refrigeration air conditioner and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170615 Address after: 315191 Yinzhou District Province, Ningbo City, Jiang Shan town on the village of summer ho Patentee after: AUX AIR CONDITIONING LIMITED BY SHARE Ltd. Address before: 315191 Zhejiang city of Ningbo province Jiangshan town Yinzhou District Mingguang Road No. 1166 Patentee before: NINGBO AUX AIR-CONDITION Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130828 |