CN203522142U - Motor integrated protector for cold chain - Google Patents
Motor integrated protector for cold chain Download PDFInfo
- Publication number
- CN203522142U CN203522142U CN201320451714.5U CN201320451714U CN203522142U CN 203522142 U CN203522142 U CN 203522142U CN 201320451714 U CN201320451714 U CN 201320451714U CN 203522142 U CN203522142 U CN 203522142U
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- China
- Prior art keywords
- module
- motor integrated
- microprocessor
- protector
- cold chain
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- Expired - Fee Related
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Abstract
The utility model discloses a motor integrated protector for a cold chain, and belongs to the technical field of motor integrated protection. The motor integrated protector for the cold chain is composed of a microprocessor, a three-phase current signal sampling module, a digital tube display module, an output control module, a sound-light alarm output module and a key input module, wherein the microprocessor adopts a singlechip; the three-phase current signal sampling module, the digital tube display module, the output control module, the sound-light alarm output module and the key input module are all connected with the singlechip, thereby forming the motor integrated protector. Compared with a traditional protector, the motor integrated protector disclosed by the utility model can greatly reduce accidental loss caused by mistaken alarming, missed alarming and efficacy losing because the number of peripheral components is small and the reliability is high, and correspondingly reduce the brought environment treatment pressure.
Description
Technical field
The utility model relates to a kind of cold chain integrated protector for electric motor, belongs to refrigeration industry integrated protector for electric motor.
Background technology
The numerous producers of freezer industry still adopt the electronic motor protector that simulation, digital circuit form at present; although this kind of protector has feature simple in structure, easy for installation; but it is less to control parameter; versatility (interchangeability) is poor; failure rate, rate of false alarm are higher; in refrigeration control, if refrigeration compressor motor is taked counter-measure not in time after breaking down, can lead to freezer major accident especially.Though part Intelligent Integration Protector of Motor function is more complete, because cost is higher, cause market price higher, restricted to a certain extent in the application of refrigeration industry and universal.
Summary of the invention
For overcoming the above-mentioned deficiency of prior art, the utility model provides a kind of cold chain integrated protector for electric motor, is the comprehensive protection device of the lower but powerful freezer motor of a kind of price.
The utility model is realized with following technical scheme: a kind of cold chain integrated protector for electric motor, and it comprises microprocessor; Be connected with microprocessor for gathering the sampling module of three-phase current signal; The keyboard input module being connected with microprocessor; The charactron display module being connected with microprocessor; The sound and light alarm output module being connected with microprocessor; The output control module for drive compression machine A.C. contactor being connected with microprocessor; Single-chip microcomputer converts current value to the motor three-phase current signal of three-phase current signal sampling module collection, and calculate three-phase average current value, when surveyed three-phase average current value is greater than setting current value, and reach the overload of setting during operate time, output control module disconnecting consumers, forms overload protection; When three-phase imbalance rate is greater than the three-phase imbalance operating point of setting, and the duration be greater than three-phase imbalance during operate time, output control module is controlled A.C. contactor action, cuts off air compressor motor power supply, forms three-phase imbalance protection; When three-phase imbalance rate is greater than 50%, treat as phase shortage, carry out open-phase protection.
Described microprocessor adopts single-chip microcomputer.
The electronic protector that this protector replaces simulation, digital circuit to form with single-chip microcomputer, periphery circuit is simple, and cost is low, stable performance.Powerful because of function of the MCU, by program compilation, the function of traditional analog, digital circuit be can replace completely, and the expansion of practical function and the upgrading of system are easy to.
The protector consisting of the utility model, because peripheral component is few, reliability strengthens, and compares traditional protection device and can significantly reduce the accidental loss of misrepresenting deliberately, failing to report, lost efficacy and cause, also the corresponding environmental treatment pressure bringing thus that reduced.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the utility model electricity theory diagram.
Fig. 2 is control flow chart.
Embodiment
As shown in Figure 1, cold chain consists of microprocessor, three-phase current signal sampling module, charactron display module, output control module, sound and light alarm output module and keyboard input module with integrated protector for electric motor.Microprocessor adopts single-chip microcomputer.Three-phase current signal sampling module, charactron display module, output control module, sound and light alarm output module and keyboard input module are connected with single-chip microcomputer respectively.Its control flow is shown in Fig. 2, single-chip microcomputer constantly detects by the next three-phase electricity flow valuve of three-phase current signal sampling module collection, and calculate three-phase average current value, when the three-phase average current value calculating is greater than setting current value, and reach the overload of setting during operate time, protective circuit action, disconnecting consumers, forms overload protection; Maximum number in the absolute value of arbitrary phase current and three-phase average current difference, divided by three-phase average current, obtains three-phase imbalance rate.When three-phase imbalance rate is greater than the three-phase imbalance operating point of setting, and the duration be greater than three-phase imbalance during operate time, relay disconnects, and cuts off motor power, forms three-phase imbalance protection; When three-phase imbalance rate is greater than 50%, treat as phase shortage, form open-phase protection.By software programming, allow single-chip microcomputer adopt dynamic driving mode to control LED charactron, not only brought into play charactron price low, the advantage that the life-span is long, power consumption is little, has further reduced the power consumption of charactron.
Claims (1)
1. a cold chain integrated protector for electric motor, is characterized in that, it comprises microprocessor; Be connected with microprocessor for gathering the sampling module of three-phase current signal; The keyboard input module being connected with microprocessor; The charactron display module being connected with microprocessor; The sound and light alarm output module being connected with microprocessor; The output control module for drive compression machine A.C. contactor being connected with microprocessor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320451714.5U CN203522142U (en) | 2013-07-26 | 2013-07-26 | Motor integrated protector for cold chain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320451714.5U CN203522142U (en) | 2013-07-26 | 2013-07-26 | Motor integrated protector for cold chain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203522142U true CN203522142U (en) | 2014-04-02 |
Family
ID=50381017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320451714.5U Expired - Fee Related CN203522142U (en) | 2013-07-26 | 2013-07-26 | Motor integrated protector for cold chain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203522142U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107332492A (en) * | 2017-07-12 | 2017-11-07 | 广州视源电子科技股份有限公司 | Compressor protection method, device and computer readable storage medium |
-
2013
- 2013-07-26 CN CN201320451714.5U patent/CN203522142U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107332492A (en) * | 2017-07-12 | 2017-11-07 | 广州视源电子科技股份有限公司 | Compressor protection method, device and computer readable storage medium |
| CN107332492B (en) * | 2017-07-12 | 2019-11-12 | 广州视源电子科技股份有限公司 | Compressor protection method, device and computer readable storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20140726 |
|
| EXPY | Termination of patent right or utility model |