CN103986376A - Multi-gear power source interface circuit of fan coil - Google Patents
Multi-gear power source interface circuit of fan coil Download PDFInfo
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- CN103986376A CN103986376A CN201410140585.7A CN201410140585A CN103986376A CN 103986376 A CN103986376 A CN 103986376A CN 201410140585 A CN201410140585 A CN 201410140585A CN 103986376 A CN103986376 A CN 103986376A
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Abstract
The invention discloses a multi-gear power source interface circuit of a fan coil. The multi-gear power source interface circuit of the fan coil is composed of a sampling circuit, an amplification module and a shaping module. A 220-V power source is supplied to the sampling circuit through a wind speed adjusting switch. The sampling circuit outputs a 220-V alternating current, collects a wind speed gear signal and outputs the wind speed gear signal to the amplification module. A signal of the amplification module is output to the shaping module and a control signal is output by the shaping module. The sampling circuit is composed of two current transformers; when the wind speed adjusting switch is in the first gear, no current signal is output to the amplification module; when the wind speed adjusting switch is in the second gear, one current transformer detects that a current signal is output to the amplification module; when the wind speed adjusting switch is in the third gear, the other current transformer detects that a current signal is output to the amplification module. The multi-gear power source interface circuit has the advantages that a power source interface of a synchronous motor can simulate the mode of speed adjustment of a tap of a single-phase alternating current asynchronous motor and an interface is provided for the synchronous motor to be applied to the general fan coil.
Description
Affiliated technical field
The present invention relates to power interface circuit, is mainly many grades of power interface circuits of a kind of fan coil, especially can identify the gear signal of fan coil wind speed adjuster, and converts thereof into the signal that can control permanent magnet AC synchronous machine rotating speed.
Background technology
The motor that existing general room conditioning fan coil is used is generally single-phase ac asynchronous motor (hereinafter to be referred as asynchronous machine), it relies on the method for tapping to carry out speed change, each gear can not all run on best efficiency point, therefore overall efficiency is low, generally can only reach 25-40%, and when operation power frequency electromagnet noise also more outstanding.So the numerous and confused research of industry is energy-conservation, efficient with (hereinafter to be referred as synchronous machines) such as permagnetic synchronous motors, the motor of low noise substitutes asynchronous machine.But general fan coil units is to adopt the method for machinery or electric gear change to the different winding power supplies of asynchronous machine (hereinafter to be referred as many grades of power supplys), reach speed governing object, and synchronous motor is controlled rotating speed by changing supply voltage or frequency.The original speed regulating method of fan coil units is not suitable for the speed control of synchronous machine.
Summary of the invention
In order not change under the prerequisite of the original speed regulating method of fan coil units, realize the application of synchronous machine in fan coil, the invention provides a kind of simple, efficient many grades of power interface circuits of fan coil, can convert many grades of power supplys of fan coil to speed control signal that control system for permanent-magnet synchronous motor can be identified.
The technical solution adopted for the present invention to solve the technical problems is: many grades of power interface circuits of this fan coil, formed by sample circuit, amplification module and Shaping Module, wind speed by-pass cock is sent 220V power supply into sample circuit, sample circuit is output AC 220V on one side, become the power supply of electric system, collect wind-speed gear signal simultaneously and export to amplification module, the signal of amplification module outputs to Shaping Module, Shaping Module output control signal; Wherein sample circuit is made up of two current transformers, and when wind speed by-pass cock is during at 1 grade, no signal current is exported to amplification module; When wind speed by-pass cock is during at 2 grades, current transformer detects that current signal exports to amplification module; When wind speed by-pass cock is during at 3 grades, another current transformer detects that current signal exports to amplification module.
Add a power interface circuit at synchronous motor system, its function is: no matter which gear delivered to by 220V alternating current by wind speed by-pass cock, all pass through certain current sampling circuit, this gear power on signal that sample circuit obtains, after amplification, shaping, be processed into the speed controling signal that synchronous motor control system can be identified, carry out.
The invention has the beneficial effects as follows: make the power interface of synchronous machine can simulate the form of single-phase ac asynchronous motor tap speed-regulating, for the application of synchronous machine in general fan coil, solved interface problem.
Brief description of the drawings
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is theory diagram of the present invention.
Fig. 2 is the circuit diagram of one embodiment of the invention.
In figure: 1. wind speed by-pass cock, 2. sample circuit, 3. amplification module, 4. Shaping Module.
Embodiment
In Fig. 1, many grades of power interface circuits are made up of sample circuit 2, amplification module 3 and Shaping Module 4.Wind speed by-pass cock 1 is sent 220V power supply into sample circuit 2, sample circuit 2 is output AC 220V on one side, become the power supply of electric system, collect wind-speed gear signal simultaneously and export to amplification module 3, the signal of amplification module 3 outputs to Shaping Module 4, and Shaping Module 4 is exported control signal
In Fig. 2, be adjusted to example with 3 grades of wind speed.Sample circuit 2 is made up of two current transformers, to wherein two, two circuits of third gear examinations of whether switching on.When certain grade of circuit energising, the current transformer on this circuit just detects current signal, and this signal output signal s after amplification, shaping is high level, otherwise is low level.The relation of wind-speed gear and output signal s is as following table:
| Wind-speed gear | s 1 | s 2 |
| 1 | 0 | 0 |
| 2 | 0 | 1 |
| 3 | 1 | 0 |
Claims (1)
1. many grades of power interface circuits of a fan coil, it is characterized in that: formed by sample circuit, amplification module and Shaping Module, wind speed by-pass cock is sent 220V power supply into sample circuit, sample circuit is output AC 220V on one side, become the power supply of electric system, collect wind-speed gear signal simultaneously and export to amplification module, the signal of amplification module outputs to Shaping Module, Shaping Module output control signal; Wherein sample circuit is made up of two current transformers, and when wind speed by-pass cock is during at 1 grade, no signal current is exported to amplification module; When wind speed by-pass cock is during at 2 grades, current transformer detects that current signal exports to amplification module; When wind speed by-pass cock is during at 3 grades, another current transformer detects that current signal exports to amplification module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410140585.7A CN103986376A (en) | 2014-04-09 | 2014-04-09 | Multi-gear power source interface circuit of fan coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410140585.7A CN103986376A (en) | 2014-04-09 | 2014-04-09 | Multi-gear power source interface circuit of fan coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103986376A true CN103986376A (en) | 2014-08-13 |
Family
ID=51278227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410140585.7A Pending CN103986376A (en) | 2014-04-09 | 2014-04-09 | Multi-gear power source interface circuit of fan coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103986376A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104538930A (en) * | 2014-11-25 | 2015-04-22 | 珠海格力电器股份有限公司 | Motor automatic fault detection system and method |
| CN114294251A (en) * | 2021-12-14 | 2022-04-08 | 宁波方太厨具有限公司 | Fan system and range hood with same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101325344A (en) * | 2008-07-18 | 2008-12-17 | 徐剑雄 | Low wind velocity charging controller for minitype wind power generator |
| CN101640423A (en) * | 2009-09-08 | 2010-02-03 | 西安交通大学 | Generator system for wind power generation and variable speed control method |
| CN203387366U (en) * | 2013-06-03 | 2014-01-08 | 浙江桐庐电机厂 | A one-body structure which integrates a permanent magnetism alternating current synchronization motor and a driver and which is used for a blower fan coil pipe |
| CN203387450U (en) * | 2013-06-03 | 2014-01-08 | 浙江桐庐电机厂 | A permanent magnetism alternating current synchronization motor system used for a blower fan coil pipe |
-
2014
- 2014-04-09 CN CN201410140585.7A patent/CN103986376A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101325344A (en) * | 2008-07-18 | 2008-12-17 | 徐剑雄 | Low wind velocity charging controller for minitype wind power generator |
| CN101640423A (en) * | 2009-09-08 | 2010-02-03 | 西安交通大学 | Generator system for wind power generation and variable speed control method |
| CN203387366U (en) * | 2013-06-03 | 2014-01-08 | 浙江桐庐电机厂 | A one-body structure which integrates a permanent magnetism alternating current synchronization motor and a driver and which is used for a blower fan coil pipe |
| CN203387450U (en) * | 2013-06-03 | 2014-01-08 | 浙江桐庐电机厂 | A permanent magnetism alternating current synchronization motor system used for a blower fan coil pipe |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104538930A (en) * | 2014-11-25 | 2015-04-22 | 珠海格力电器股份有限公司 | Motor automatic fault detection system and method |
| CN104538930B (en) * | 2014-11-25 | 2017-11-10 | 珠海格力电器股份有限公司 | Motor automatic fault detecting system and method |
| CN114294251A (en) * | 2021-12-14 | 2022-04-08 | 宁波方太厨具有限公司 | Fan system and range hood with same |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140813 |