CN201740809U - Detection circuit for detecting operating voltage of air conditioner - Google Patents
Detection circuit for detecting operating voltage of air conditioner Download PDFInfo
- Publication number
- CN201740809U CN201740809U CN2010202603890U CN201020260389U CN201740809U CN 201740809 U CN201740809 U CN 201740809U CN 2010202603890 U CN2010202603890 U CN 2010202603890U CN 201020260389 U CN201020260389 U CN 201020260389U CN 201740809 U CN201740809 U CN 201740809U
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- air conditioner
- voltage
- heq
- operating voltage
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Abstract
The utility model discloses a detection circuit for detecting operating voltage of an air conditioner, which comprises a voltage transformer HEQ and a rectification filter circuit (1). The primary coil of the voltage transformer HEQ is connected with the mains power, and the secondary coil of the voltage transformer HEQ is connected with the input end of the rectification filter circuit (1); and the output end of the rectification filter circuit (1) is connected with a microprocessor of an air conditioner through signals. The utility model can detect the voltage in a power grid, transmit the voltage to the microprocessor and judge whether to start the compressor via the microprocessor according to detection signals, thereby realizing the purpose of protecting the compressor.
Description
Technical field
The utility model relates to the air conditioner technical field, specifically is a kind of testing circuit of air conditioner operating voltage.
Background technology
Along with the raising of people's living standard, and the go to the countryside enforcement of policy of national household electrical appliances, air conditioner has been come among the huge numbers of families.Along with popularizing of air-conditioning, it is used in the various abominable power utilization environments such as rural area, building site more and more.As in the rural area, because the relative imperfection of construction of electrical network, so the fluctuation range of line voltage is bigger.If the air conditioner long-term work is in the bigger environment of this scope range of the fluctuation of voltage, owing to can't guarantee that compressor of air conditioner is operated in the rated operational voltage scope, therefore must cause the frequent start-stop of compressor, and frequent start and stop can cause the frequent impact that is subjected to big electric current of compressor interior loop, and then cause shorten the serviceable life of compressor, even damage the coil of compressor.Therefore, demand needing a kind of voltage detecting circuit urgently, the voltage of this circuit in can detection of grid is given microprocessor with this voltage then, and then is judged whether to open compressor by microprocessor according to detection signal, thereby reaches the purpose of protection compressor.
The utility model content
The technical problems to be solved in the utility model is; overcome the defective of above prior art; a kind of testing circuit of air conditioner operating voltage is provided; the voltage of this circuit in can detection of grid; give microprocessor with this voltage then; and then judge whether to open compressor according to detection signal, thereby reach the purpose of protection compressor by microprocessor.
The technical solution of the utility model is, a kind of testing circuit of air conditioner operating voltage is provided, it comprises voltage transformer (VT) HEQ and current rectifying and wave filtering circuit, the primary winding of described voltage transformer (VT) HEQ is electrically connected with the city, and the secondary coil of described voltage transformer (VT) HEQ is connected with the input end of current rectifying and wave filtering circuit; The output terminal of described current rectifying and wave filtering circuit is connected with the microprocessor signals of air conditioner.
After adopting above structure, the utility model compared with prior art has the following advantages:
The voltage that the testing circuit of the utility model air conditioner operating voltage is mainly used in the input air conditioner detects in real time, send the microprocessor of air conditioner by the voltage signal that detects to by signal wire, judge whether to open compressor by microprocessor according to detection signal again.Therefore work as the air conditioner long-term work in the bigger environment of this scope range of the fluctuation of voltage, can guarantee that to the judgement of detection signal compressor of air conditioner is operated in the rated operational voltage scope by microprocessor, thereby avoided causing the problem of the frequent impact that is subjected to big electric current of compressor interior loop because of the frequent start-stop of compressor, thereby the serviceable life of compressor and the serviceable life of compressor coil have been guaranteed.
Description of drawings
Accompanying drawing is the circuit theory diagrams of the testing circuit of the utility model air conditioner operating voltage.
Shown in the figure 1, current rectifying and wave filtering circuit.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in drawings, the testing circuit of a kind of air conditioner operating voltage of the utility model, it comprises voltage transformer (VT) HEQ and current rectifying and wave filtering circuit 1, the primary winding of described voltage transformer (VT) HEQ is electrically connected with the city, the secondary coil of described voltage transformer (VT) HEQ is connected with the input end of current rectifying and wave filtering circuit 1, voltage transformer (VT) HEQ and current rectifying and wave filtering circuit all are circuit that industry those of ordinary skill is all known, in the present embodiment, current rectifying and wave filtering circuit is made up of D10, D11, D12, D13, E1, C1.The primary winding of voltage transformer (VT) HEQ is connected with civil power (L, N), and the secondary coil of voltage transformer (VT) HEQ is connected with the negative electrode of D10, the anode of D11, the anode of D12, the negative electrode of D13 respectively.
The output terminal of described current rectifying and wave filtering circuit 1 is connected with the microprocessor signals of air conditioner, and wherein, microprocessor is not shown in the accompanying drawings.E1 positive pole in the current rectifying and wave filtering circuit 1, the utmost point of C1 are connected with an A/D mouth of microprocessor.
The testing circuit of described air conditioner operating voltage also comprises the diode D1 that overvoltage protection is used, and the negative electrode of described diode D1 is connected with the positive pole of direct supply in the air conditioner, and the anode of described diode D1 is connected with the output terminal of current rectifying and wave filtering circuit 1.In the present embodiment, the anode of diode D1 is connected with the utmost point of E1 positive pole, C1, and the negative electrode of diode D1 (is generally+5v) be connected with the positive pole of the interior direct supply of air conditioner.
L, N link to each other with live wire with zero line in the user family, promptly represent the civil power virtual voltage in the user family, behind voltage transformer (VT) HGQ, High Level AC Voltage is the alternating current of low pressure by pressure drop, passes through D10 again, D11, D12, the bridge rectifier circuit that D13 forms becomes the direct current of low pressure, pass through electric capacity E1 and C1 filtering again after, d. c. voltage signal is sent into the A/D mouth of single-chip microcomputer.Diode D1 plays clamped effect, prevents the too high damage Chip Microcomputer A of dc voltage value/D mouth.Chip Microcomputer A/D mouth by the program that in advance single-chip microcomputer is write, is judged current magnitude of voltage in the user family according to dc voltage value, and controls the running status of air conditioner in view of the above.
Below only be described, but can not be interpreted as it is restriction claim with regard to most preferred embodiment of the present utility model.The utility model is not limited only to above embodiment, and its concrete structure allows variation.In every case the various variations of being done in the protection domain of the utility model independent claims are all in protection domain of the present utility model.
Claims (2)
1. the testing circuit of an air conditioner operating voltage, it is characterized in that: it comprises voltage transformer (VT) HEQ and current rectifying and wave filtering circuit (1), the primary winding of described voltage transformer (VT) HEQ is electrically connected with the city, and the secondary coil of described voltage transformer (VT) HEQ is connected with the input end of current rectifying and wave filtering circuit (1); The output terminal of described current rectifying and wave filtering circuit (1) is connected with the microprocessor signals of air conditioner.
2. the testing circuit of air conditioner operating voltage according to claim 1; it is characterized in that: the testing circuit of described air conditioner operating voltage also comprises the diode D1 that overvoltage protection is used; the negative electrode of described diode D1 is connected with the positive pole of direct supply in the air conditioner, and the anode of described diode D1 is connected with the output terminal of current rectifying and wave filtering circuit (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202603890U CN201740809U (en) | 2010-07-12 | 2010-07-12 | Detection circuit for detecting operating voltage of air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202603890U CN201740809U (en) | 2010-07-12 | 2010-07-12 | Detection circuit for detecting operating voltage of air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201740809U true CN201740809U (en) | 2011-02-09 |
Family
ID=43556087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202603890U Expired - Lifetime CN201740809U (en) | 2010-07-12 | 2010-07-12 | Detection circuit for detecting operating voltage of air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201740809U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829529A (en) * | 2012-09-24 | 2012-12-19 | 宁波奥克斯空调有限公司 | Control device and control method for air conditioner auxiliary electrical heating |
| CN105864007A (en) * | 2015-01-23 | 2016-08-17 | 广东美的制冷设备有限公司 | Protection device for compressor control circuit and control method thereof |
| CN106286257A (en) * | 2016-09-14 | 2017-01-04 | 珠海格力电器股份有限公司 | Compressor control method and device and air conditioner |
-
2010
- 2010-07-12 CN CN2010202603890U patent/CN201740809U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829529A (en) * | 2012-09-24 | 2012-12-19 | 宁波奥克斯空调有限公司 | Control device and control method for air conditioner auxiliary electrical heating |
| CN102829529B (en) * | 2012-09-24 | 2015-06-10 | 宁波奥克斯空调有限公司 | Control device and control method for air conditioner auxiliary electrical heating |
| CN105864007A (en) * | 2015-01-23 | 2016-08-17 | 广东美的制冷设备有限公司 | Protection device for compressor control circuit and control method thereof |
| CN106286257A (en) * | 2016-09-14 | 2017-01-04 | 珠海格力电器股份有限公司 | Compressor control method and device and air conditioner |
| CN106286257B (en) * | 2016-09-14 | 2017-12-08 | 珠海格力电器股份有限公司 | Compressor control method and device and air conditioner |
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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 |
Effective date of registration: 20170526 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:AUX International Industrial Park Patentee before: Ningbo AUX Group. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110209 |