CN201878002U - Main power supply circuit for air conditioner - Google Patents
Main power supply circuit for air conditioner Download PDFInfo
- Publication number
- CN201878002U CN201878002U CN2010205129868U CN201020512986U CN201878002U CN 201878002 U CN201878002 U CN 201878002U CN 2010205129868 U CN2010205129868 U CN 2010205129868U CN 201020512986 U CN201020512986 U CN 201020512986U CN 201878002 U CN201878002 U CN 201878002U
- Authority
- CN
- China
- Prior art keywords
- power supply
- air conditioner
- ptc thermistor
- packet mode
- main circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The utility model provides a main power supply circuit for air conditioner, wherein a welding bag type PTC thermistor is used for current overload protection, so as to constantly and effectively inhibit the peak value of charging current of an electrolytic capacitor and to protect the stable operation of an air conditioner control system in the power supply beginning period of time that the voltage is instable. A silicon rectifying bridge and an electrolytic capacitor parallel connection set are sequentially connected between the input end of an alternating current power supply and a post-stage load in series, the welding bag type PTC thermistor is connected between the input end of the alternating current power supply and the silicon rectifying bridge in series, and the welding bag type PTC thermistor is connected with a relay in parallel.
Description
Technical field
The utility model provides a kind of main circuit power supply that is applied to transducer air conditioning, adopts weldering packet mode PTC thermistor to carry out the current overload protection at ac power input end specifically, belongs to household appliance technical field.
Background technology
Existing transducer air conditioning is effective and have energy-conservation characteristics because of its refrigerating/heating, and has obtained being extensive use of in family and business scope.
Because the structure and the performance characteristics of transducer air conditioning self control system, initially can cause higher surge current powering on, therefore the alternating voltage of some areas or time period and unstable in addition in addition requires that design has the protecting component that suppresses power supply initial current overload in the air conditioner control system.Structural design is the charging current peak value at electrochemical capacitor in the major loop (capacitance generally is not less than 470uF) at large, is in series with reed-type PTC ceramic thermal resistance in the one side.
Fault of construction and use problem that above-mentioned this type of existing air conditioner control system major loop exists are:
Load the main circuit power supply of reed-type PTC ceramic thermal resistance, enter operate condition regularly, thereby cause the resistance of reed-type PTC ceramic thermal resistance to be exponential growing trend, the result causes weakening or even disappearing at the charging current peak value inhibitory action of electrochemical capacitor ground.
The body intensification scope of reed-type PTC ceramic thermal resistance is bigger, causes main circuit power supply local temperature rise higher (the highest can to more than 130 ℃), uses and heat radiation has in time brought big negative effect to security appliance.
When reed-type PTC ceramic thermal resistance was higher because of change in resistance causes heating up, its bulk material volume also sharply increased, and therefore must adopt necessary, fastening structure reliably, therefore had influence on the structural design and the manufacturing cost of main circuit power supply.
The utility model content
Air conditioner main circuit power supply described in the utility model is to take parts alternate modification targetedly according to above-mentioned existing issue, promptly adopts a kind of semistor to realize that main circuit power supply always works in non-action status.
Purpose of design of the present utility model is; adopt weldering packet mode PTC thermistor to carry out the current overload protection; realization effectively suppresses at the charging current peak value of electrochemical capacitor all the time, and the protection air conditioner control system runs on the power supply current peak time period in beginning reposefully.
Another purpose of design is, the body intensification scope of weldering packet mode PTC thermistor is less, helps security appliance and circuit board in time dispels the heat.
Purpose of design is that also the volume of weldering packet mode PTC thermistor can not need not to take similar fastening syndeton because of intensification sharply increases, and helps reducing circuit design difficulty and manufacturing cost.
For achieving the above object, described air conditioner main circuit power supply primary structure is:
Between ac power input end and back level load, be in series with rectification silicon bridge, electrochemical capacitor and joint group successively,
The weldering packet mode PTC thermistor of between ac power input end and rectification silicon bridge, connecting,
A weldering packet mode PTC thermistor relay in parallel.
As above-mentioned basic scheme, the weldering packet mode PTC thermistor that is adopted, its surface scribbles encapsulating material-organic siliconresin, and its pin can directly be welded on the chip of air conditioner control system by scolder, need not to take corresponding fastening structure.
Compare with existing current reed-type or other forms of PTC thermistor, weldering packet mode PTC thermistor can work in non-action status all the time, be more suitable for carrying out the current peak inhibitory action, be adapted to the ac power supply current overload protection in beginning especially in rectification circuit at main circuit power supply.
For further improving the variable frequency control precision of power termination in the air-conditioner system, the corrective measure that can take is, an active PFC (POWER FACTOR CORRECTION writes a Chinese character in simplified form, i.e. power factor correction) module in parallel between rectification silicon bridge and electrochemical capacitor and joint group.
Current overload protection by above-mentioned weldering packet mode PTC thermistor is realized can detect to determine the startup operation of PFC module by current protection, also can detect and control closing of PFC module with voltage protection and zero cross signal.
For at the beginning of ac power supply, further improve filtering and the anti-effect of vibrating, at least one inductance coil of can between rectification silicon bridge and electrochemical capacitor and joint group, connecting at electrochemical capacitor.
Based on similar principle, also can take following prioritization scheme, i.e. at least one inductance coil of series connection between weldering packet mode PTC thermistor and rectification silicon bridge.
As mentioned above, the utility model air conditioner main circuit power supply has following advantage and beneficial effect:
1, adopt semistor-weldering packet mode PTC thermistor to carry out the current overload protection; can be under the state in power supply beginning all the time the charging current peak value at electrochemical capacitor effectively suppress, the protection air conditioner control system can run on the time period of current peak reposefully.
2, the intensification of weldering packet mode PTC thermistor itself is less, helps security appliance and circuit board in time dispels the heat.
3, the volume of weldering packet mode PTC thermistor can be because of intensification sharply increase, and need not to design in main circuit power supply has fastening structure, helps reducing design difficulty and manufacturing cost.
Description of drawings
Now in conjunction with the accompanying drawings the utility model is described further
Fig. 1 is the schematic diagram of described air conditioner main circuit power supply;
Fig. 2 is the main circuit power supply schematic diagram of another execution mode;
Extremely shown in Figure 2 as Fig. 1, ac power input end 1, active PFC control section 2, weldering packet mode PTC thermistor 3, relay 4, rectification silicon bridge 5, inductance coil 6, active PFC module 7, electrochemical capacitor 8, back level load 9.
Embodiment
Weldering packet mode PTC thermistor 3 relays 4 in parallel,
An active PFC module 7 in parallel between rectification silicon bridge 5 and electrochemical capacitor and joint group,
At least one inductance coil 6 of series connection between rectification silicon bridge 5 and electrochemical capacitor and joint group.
Compare with existing reed-type or other forms of PTC thermistor, weldering packet mode PTC thermistor 3 can work in non-action status all the time.
In the power supply beginning of AC power, weldering packet mode PTC thermistor 3 more effectively carries out the inhibition of current peak to rectification silicon bridge 5 because of the characteristic that possesses positive temperature coefficient, thereby prevents the current overload of major loop in moment.
Weldering packet mode PTC thermistor 3 relays 4 in parallel,
At least one inductance coil 6 of series connection between rectification silicon bridge 5 and electrochemical capacitor and joint group,
At least one inductance coil 6 of series connection between weldering packet mode PTC thermistor 3 and rectification silicon bridge 5.
Claims (4)
1. an air conditioner main circuit power supply is in series with rectification silicon bridge, electrochemical capacitor and joint group successively between ac power input end and back level load, it is characterized in that:
The weldering packet mode PTC thermistor of between ac power input end and electrochemical capacitor, connecting,
A weldering packet mode PTC thermistor relay in parallel.
2. air conditioner main circuit power supply according to claim 1 is characterized in that: an active PFC module in parallel between rectification silicon bridge and electrochemical capacitor and joint group.
3. air conditioner main circuit power supply according to claim 1 and 2 is characterized in that: at least one inductance coil of series connection between rectification silicon bridge and electrochemical capacitor and joint group.
4. air conditioner main circuit power supply according to claim 1 and 2 is characterized in that: at least one inductance coil of series connection between weldering packet mode PTC thermistor and rectification silicon bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205129868U CN201878002U (en) | 2010-09-01 | 2010-09-01 | Main power supply circuit for air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205129868U CN201878002U (en) | 2010-09-01 | 2010-09-01 | Main power supply circuit for air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201878002U true CN201878002U (en) | 2011-06-22 |
Family
ID=44165910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205129868U Expired - Fee Related CN201878002U (en) | 2010-09-01 | 2010-09-01 | Main power supply circuit for air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201878002U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103185323A (en) * | 2011-12-29 | 2013-07-03 | 上海柏宜照明电子有限公司 | Self-ballasted light-emitting diode (LED) lamp tube |
| CN108322035A (en) * | 2018-03-07 | 2018-07-24 | 奥克斯空调股份有限公司 | A kind of charging control circuit and its control method |
| CN109713767A (en) * | 2017-10-20 | 2019-05-03 | 奥克斯空调股份有限公司 | A kind of charging circuit and convertible frequency air-conditioner with overvoltage crowbar |
| CN109936202A (en) * | 2017-12-18 | 2019-06-25 | 奥克斯空调股份有限公司 | A kind of air-conditioning charging circuit, charge control method and air-conditioning with the circuit |
-
2010
- 2010-09-01 CN CN2010205129868U patent/CN201878002U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103185323A (en) * | 2011-12-29 | 2013-07-03 | 上海柏宜照明电子有限公司 | Self-ballasted light-emitting diode (LED) lamp tube |
| CN109713767A (en) * | 2017-10-20 | 2019-05-03 | 奥克斯空调股份有限公司 | A kind of charging circuit and convertible frequency air-conditioner with overvoltage crowbar |
| CN109936202A (en) * | 2017-12-18 | 2019-06-25 | 奥克斯空调股份有限公司 | A kind of air-conditioning charging circuit, charge control method and air-conditioning with the circuit |
| CN108322035A (en) * | 2018-03-07 | 2018-07-24 | 奥克斯空调股份有限公司 | A kind of charging control circuit and its control method |
| CN108322035B (en) * | 2018-03-07 | 2020-03-13 | 奥克斯空调股份有限公司 | Charging control circuit and control method thereof |
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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: 20110622 Termination date: 20170901 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |