CN201569690U - Current detection device for air conditioner controller - Google Patents
Current detection device for air conditioner controller Download PDFInfo
- Publication number
- CN201569690U CN201569690U CN2009201937232U CN200920193723U CN201569690U CN 201569690 U CN201569690 U CN 201569690U CN 2009201937232 U CN2009201937232 U CN 2009201937232U CN 200920193723 U CN200920193723 U CN 200920193723U CN 201569690 U CN201569690 U CN 201569690U
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- voltage
- current
- power transformer
- detector
- power
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Abstract
The utility model relates to the technical field of the air conditioner, in particular to a current detection device for an air conditioner controller, which comprises a voltage regulator, a power transformer, a mutual inductor, a first voltage detector, a second voltage detector, a current detector and a diode. The power transformer comprises a secondary coil and a secondary framework in sequence. The connection of the current detection device is as follows: the voltage regulator is connected with the primary of the power transformer, the voltage detector is connected with the voltage regulator in parallel, the secondary of the power transformer is connected with the current detector in series and is then connected with the mutual inductor, and the mutual inductor is connected with the diode, the second voltage detector and a main chip in parallel. The secondary coil of the power transformer is substituted through winding a power wire, and the power wire is wound on the secondary framework. When the utility model is used in detection of the air conditioner, the high-current signal can be obtained without any external load, and the whole control system can normally detect in the safe and reliable state.
Description
Technical field
The utility model relates to air-conditioning technical field, relates in particular to the pick-up unit of air-conditioner controller electric current.
Technical background
Increase in the new technology of compressor current check at air-conditioner controller, check this function, must there be big electric current to flow through the mutual inductor of controller, thereby whether decision circuitry work is normal, when air-conditioner controller need detect big electric current, need connect the high-power resistance dish as fictitious load, the existence of this state, brought several problems of testing:
(1) load that need meet 1KW-3KW produces big electric current
(2) fluctuation of the size adjustment of current value is big, can not satisfy step-less adjustment, and difference is big, and measuring accuracy is poor.
(3) fictitious load easily causes high temperature, electric shock.
When (4) many frocks are checked simultaneously, the load capacity that provides of power supply is had higher requirements.
From as can be seen above-mentioned, in existing compressor current detection technique, the reliability of serious threat controller.
The utility model content
The utility model provides a kind of current sensing means that is used for air-conditioner controller, is used for solving prior art, when carrying out the big current detecting of air-conditioner controller, needs to insert the technical matters of high-power resistance dish as fictitious load.
For achieving the above object, the technical solution of the utility model is: a kind of current sensing means that is used for air-conditioner controller, comprise pressure regulator, power transformer, mutual inductor, first voltage-level detector, second voltage-level detector, current detector and diode, power transformer comprise secondary coil and sub-frame, and pressure regulator is connected with the elementary of power transformer, voltage-level detector and pressure regulator are connected in parallel, secondary and the current detector series connection back of power transformer is connected with mutual inductor, mutual inductor and diode, and second voltage-level detector and master chip are connected in parallel.
The secondary coil of power transformer wherein is connected on the sub-frame with the power supply wire-wound.
Withstand voltage 〉=the 220V of this power lead, split conductor or single-core line all can, line footpath is selected according to the electric current of output.This device also can be realized with enameled wire, but consideration magnet wire insulation cracky does not advise using.
As a kind of preferred version, first voltage-level detector wherein and second voltage-level detector are the digital display voltage tables, and current detector is a pincerlike meter.
The range of regulation of pressure regulator wherein is 0V-250V, and the rated voltage of power transformer is 220V/12V, and rated current is 350mA.
As preferred version further, power transformer around sub-frame, produces big electric current as current signal to utilize secondary coil short circuit with 2.5 squares of power leads.Power lead can adopt 1.5 squares～4 squares power leads, comprises 1.5 squares of power leads, 2.5 squares of power leads, 4 squares of power leads etc.
As further preferred version again, power transformer is advisable with 2 circles around sub-frame 1～3 circle.
The utility model provides a kind of safe air-conditioner controller current sensing means, when it can make air-conditioning be in detected state, need not external load and can obtain big current signal, and The whole control system can normally detect safety and the reliable state of being in again.
Description of drawings
Accompanying drawing 1 is a circuit system figure of the present utility model
Embodiment
As shown in Figure 1, the utility model comprises pressure regulator 1, power transformer 2, and mutual inductor 3, the first voltage-level detectors 4, the second voltage-level detectors 5, split-core type meter 6 and diode 7, power transformer 2 comprises secondary coil and sub-frame, its connected mode is:
The secondary coil of power transformer 2 wherein substitutes with 2.5 squares of power lead solderless wrapped connections, and 2.5 squares of power leads are regulated the power transformer primary voltage around sub-frame two circles, utilize secondary coil short circuit to produce big electric current as current signal.
Workflow of the present utility model is as follows:
Claims (6)
1. current sensing means that is used for air-conditioner controller, comprise pressure regulator, power transformer, mutual inductor, first voltage-level detector, second voltage-level detector, current detector and diode, power transformer comprise secondary coil and sub-frame, it is characterized in that, pressure regulator is connected with the elementary of power transformer, voltage-level detector and pressure regulator are connected in parallel, and the secondary and current detector series connection back of power transformer is connected mutual inductor and diode with mutual inductor, second voltage-level detector and master chip are connected in parallel, and the secondary coil of described power transformer is connected on the sub-frame with the power supply wire-wound.
2. current sensing means according to claim 1 is characterized in that, described power lead is the power lead of withstand voltage 〉=220V.
3. current sensing means according to claim 1 is characterized in that, described first voltage-level detector is the digital display voltage table, and described second voltage-level detector is the digital display voltage table, and described current detector is a pincerlike meter.
4. current sensing means according to claim 1 is characterized in that the range of regulation of described pressure regulator is 0V-250V, and the rated voltage of described power transformer is 220V/12V, and rated current is 350mA.
5. current sensing means according to claim 1 is characterized in that, described power lead is 1.5 squares～4 squares power leads.
6. current sensing means according to claim 1 is characterized in that, the number of turns of described power lead solderless wrapped connection on sub-frame is 1～3 circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201937232U CN201569690U (en) | 2009-08-31 | 2009-08-31 | Current detection device for air conditioner controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201937232U CN201569690U (en) | 2009-08-31 | 2009-08-31 | Current detection device for air conditioner controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201569690U true CN201569690U (en) | 2010-09-01 |
Family
ID=42661984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201937232U Expired - Fee Related CN201569690U (en) | 2009-08-31 | 2009-08-31 | Current detection device for air conditioner controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201569690U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102457054A (en) * | 2010-10-22 | 2012-05-16 | 中兴通讯股份有限公司 | Surge protection device and method for current sampling circuit |
-
2009
- 2009-08-31 CN CN2009201937232U patent/CN201569690U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102457054A (en) * | 2010-10-22 | 2012-05-16 | 中兴通讯股份有限公司 | Surge protection device and method for current sampling circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100901 Termination date: 20130831 |