CN203233147U - Low voltage frequency converter with overheating protection function - Google Patents
Low voltage frequency converter with overheating protection function Download PDFInfo
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- CN203233147U CN203233147U CN 201220635750 CN201220635750U CN203233147U CN 203233147 U CN203233147 U CN 203233147U CN 201220635750 CN201220635750 CN 201220635750 CN 201220635750 U CN201220635750 U CN 201220635750U CN 203233147 U CN203233147 U CN 203233147U
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- voltage frequency
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Abstract
The utility model discloses a low voltage frequency converter with overheating protection function; the low voltage frequency converter comprises the following elements: a temperature detection module for detecting temperature of the low voltage frequency converter and outputting temperature signals; a signal conversion module for receiving the temperature signals and converting the temperature signals to voltage signals for output; a signal comparison module for receiving the voltage signals, comparing the voltage signals with reference voltage signals, and outputting overheating signals; and a main control module for receiving the overheating signals and controlling power output of the low voltage frequency converter. The temperature detection module, the signal conversion module, the signal comparison module and the main control module are electrically connected in sequence. The temperature detection module is arranged to automatically detect overheating fault of the frequency converter; the main control module is employed to interrupt power output of the frequency converter when overheating fault happens; and simultaneously alarm signals are sent out to automatically protect the frequency converter and external equipment, thereby preventing generation of production accident.
Description
Technical field
The utility model relates to a kind of low voltage frequency converter, is specifically related to a kind of low voltage frequency converter with overheat protective function.
Background technology
Along with developing rapidly of modern power electronics technology and Computer Control Technology, promoted the technological revolution of electric drive.AC speed regulating replaces DC speed regulation, computer numerical control (CNC) replaces simulation control has become development trend.Frequency conversion and speed regulation of AC motor is current saves energy, improve the technological process of production, improve the quality of products and improve a kind of main means of running environment.Frequency control is with its high efficiency, High Power Factor and excellent speed governing and open plurality of advantages such as braking ability and be known as the most rising mode of speed regulation both at home and abroad.
Frequency converter (VFD) is along with the needs of frequency control arise at the historic moment, it is to use converter technique and microelectric technique, frequency by changing the machine operation power supply and the mode of amplitude are controlled the Electric Drive element of alternating current motor, are to utilize the on-off action of power semiconductor device power frequency supply to be transformed to the electric energy control device of another frequency.
In the low voltage frequency converter running, regular meeting is too high because of ambient temperature, fan damages or the frequency converter overheating fault appears in reason such as air channel obstruction.When overheating fault appears in low voltage frequency converter, if can not find the very first time and handle, will damage frequency converter and external equipment, production accident takes place.For protection low voltage frequency converter and external equipment, avoid the generation of production accident, a kind of low voltage frequency converter with overheat protective function need be provided.
Summary of the invention
The utility model purpose provides a kind of low voltage frequency converter with overheat protective function, detect the frequency converter overheating fault automatically, interrupt frequency converter output, send alarm signal simultaneously, protect frequency converter and external equipment automatically, avoid the generation of production accident.
For achieving the above object, the technical solution adopted in the utility model is: a kind of low voltage frequency converter with overheat protective function comprises:
Detect the temperature of described low voltage frequency converter and the temperature detecting module of output temperature signal;
Receive described temperature signal and convert described temperature signal to signal conversion module that voltage signal is exported;
Receive described voltage signal, and this voltage signal and reference voltage signal compared, export the signal fusing module of heat alarm;
Receive the master control module of described heat alarm, the described low voltage frequency converter power output of control;
Described temperature detecting module, signal conversion module, signal fusing module and master control module are electrically connected successively.
Preferably, described temperature detecting module is temperature sensor.
Further technical scheme, this low voltage frequency converter also comprises control panel, and described control panel is provided with LCDs, and the function code of described heat alarm and content are shown on this LCDs.
Further technical scheme, this low voltage frequency converter also comprise the warning device that is electrically connected, receives the alarm signal that described master control module sends with the master control module.
Job step of the present utility model is as described below:
(1) utilize temperature detecting module that the operating temperature of low voltage frequency converter is detected;
(2) utilize signal conversion module to convert the temperature signal that obtains in the step (1) to voltage signal;
(3) utilize the signal fusing module that the voltage signal and the reference voltage signal that obtain in the step (2) are compared, when described voltage signal greater than reference voltage signal time output heat alarm;
(4) heat alarm of the master control module receiving step (3) of low voltage frequency converter is interrupted the power output of low voltage frequency converter, and low voltage frequency converter quits work;
(5) alarm module receives the alarm signal that the master control module is sent, caution staff low voltage frequency converter generation overheating fault.
Because technique scheme is used, the advantage that the utility model compared with prior art has is:
1, because the utility model being provided with can be detected the temperature detecting module of frequency converter overheating fault automatically; and when taking place, overheating fault utilize the master control module to interrupt the power output of frequency converter; send alarm signal simultaneously, protect frequency converter and external equipment automatically, avoid the generation of production accident.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment one;
Fig. 2 is the operation principle block diagram of embodiment one;
Wherein: 1, frequency converter casing; 2, panel; 20, control panel; 200, LCDs; 3, frequency conversion input port; 4, frequency conversion output port.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described:
Embodiment one: referring to shown in Figure 1; a kind of low voltage frequency converter with overheat protective function; the panel 2, the frequency conversion input port 3 of being located at frequency converter casing 1 one ends and the frequency conversion output port 4 that comprise frequency converter casing 1, be connected with described frequency converter casing 1, described panel 2 is provided with control panel 20.
Be provided with in the described frequency converter casing 1:
Detect the temperature of described low voltage frequency converter and the temperature detecting module of output temperature signal;
Receive described temperature signal and convert described temperature signal to signal conversion module that voltage signal is exported;
Receive described voltage signal, and this voltage signal and reference voltage signal compared, export the signal fusing module of heat alarm;
Receive the master control module of described heat alarm, the described low voltage frequency converter power output of control;
Be electrically connected, receive the warning device of the alarm signal that described master control module sends with the master control module;
Described temperature detecting module, signal conversion module, signal fusing module and master control module are electrically connected successively.
In the present embodiment, described temperature detecting module is temperature sensor.
Described control panel 20 is provided with LCDs 200, and the function code of described heat alarm and content are shown on this LCDs 200.
This have overheat protective function low voltage frequency converter low voltage frequency converter the operation principle block diagram as shown in Figure 2, its job step is as described below:
(1) utilize temperature detecting module that the operating temperature of low voltage frequency converter is detected;
(2) utilize signal conversion module to convert the temperature signal that obtains in the step (1) to voltage signal;
(3) utilize the signal fusing module that the voltage signal and the reference voltage signal that obtain in the step (2) are compared, when described voltage signal greater than reference voltage signal time output heat alarm;
(4) heat alarm of the master control module receiving step (3) of low voltage frequency converter is interrupted the power output of low voltage frequency converter, and low voltage frequency converter quits work;
(5) alarm module receives the alarm signal that the master control module is sent, caution staff low voltage frequency converter generation overheating fault.
Claims (3)
1. low voltage frequency converter with overheat protective function comprises:
Detect the temperature of described low voltage frequency converter and the temperature detecting module of output temperature signal;
Receive described temperature signal and convert described temperature signal to signal conversion module that voltage signal is exported;
Receive described voltage signal, and this voltage signal and reference voltage signal compared, export the signal fusing module of heat alarm;
Receive the master control module of described heat alarm, the described low voltage frequency converter power output of control;
Described temperature detecting module, signal conversion module, signal fusing module and master control module are electrically connected successively; It is characterized in that this low voltage frequency converter also comprises the warning device that is electrically connected, receives the alarm signal that described master control module sends with the master control module.
2. the low voltage frequency converter with overheat protective function according to claim 1 is characterized in that, described temperature detecting module is temperature sensor.
3. the low voltage frequency converter with overheat protective function according to claim 1; it is characterized in that; this low voltage frequency converter also comprises control panel, and described control panel is provided with LCDs, and the function code of described heat alarm and content are shown on this LCDs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220635750 CN203233147U (en) | 2012-11-26 | 2012-11-26 | Low voltage frequency converter with overheating protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220635750 CN203233147U (en) | 2012-11-26 | 2012-11-26 | Low voltage frequency converter with overheating protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203233147U true CN203233147U (en) | 2013-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220635750 Expired - Fee Related CN203233147U (en) | 2012-11-26 | 2012-11-26 | Low voltage frequency converter with overheating protection function |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104104058A (en) * | 2014-07-22 | 2014-10-15 | Tcl通讯（宁波）有限公司 | Temperature protection device of power management chip and mobile terminal |
| EP3389024A1 (en) * | 2017-04-12 | 2018-10-17 | Vestel Elektronik Sanayi ve Ticaret A.S. | Network-enabled eletronic device, system and method |
| CN109066585A (en) * | 2018-08-14 | 2018-12-21 | 台州市菱士达电器有限公司 | A kind of frequency converter with overheat protecting system |
| CN109255931A (en) * | 2018-09-29 | 2019-01-22 | 石狮市酷瑞电气有限责任公司 | A kind of frequency converter failure warning device and alarm system |
| CN112268637A (en) * | 2020-09-23 | 2021-01-26 | 北京首钢自动化信息技术有限公司 | Temperature fault early warning device for frequency conversion equipment |
| CN117782340A (en) * | 2024-02-26 | 2024-03-29 | 深圳安森德半导体有限公司 | Over-temperature detection circuit |
-
2012
- 2012-11-26 CN CN 201220635750 patent/CN203233147U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104104058A (en) * | 2014-07-22 | 2014-10-15 | Tcl通讯（宁波）有限公司 | Temperature protection device of power management chip and mobile terminal |
| CN104104058B (en) * | 2014-07-22 | 2017-08-08 | Tcl通讯（宁波）有限公司 | The temperature protective device and mobile terminal of a kind of power management chip |
| EP3389024A1 (en) * | 2017-04-12 | 2018-10-17 | Vestel Elektronik Sanayi ve Ticaret A.S. | Network-enabled eletronic device, system and method |
| CN109066585A (en) * | 2018-08-14 | 2018-12-21 | 台州市菱士达电器有限公司 | A kind of frequency converter with overheat protecting system |
| CN109255931A (en) * | 2018-09-29 | 2019-01-22 | 石狮市酷瑞电气有限责任公司 | A kind of frequency converter failure warning device and alarm system |
| CN112268637A (en) * | 2020-09-23 | 2021-01-26 | 北京首钢自动化信息技术有限公司 | Temperature fault early warning device for frequency conversion equipment |
| CN117782340A (en) * | 2024-02-26 | 2024-03-29 | 深圳安森德半导体有限公司 | Over-temperature detection circuit |
| CN117782340B (en) * | 2024-02-26 | 2024-05-03 | 深圳安森德半导体有限公司 | Over-temperature detection circuit |
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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: 20131009 Termination date: 20151126 |