CN204391734U - Control circuit and air-conditioner set - Google Patents
Control circuit and air-conditioner set Download PDFInfo
- Publication number
- CN204391734U CN204391734U CN201420832861.1U CN201420832861U CN204391734U CN 204391734 U CN204391734 U CN 204391734U CN 201420832861 U CN201420832861 U CN 201420832861U CN 204391734 U CN204391734 U CN 204391734U
- Authority
- CN
- China
- Prior art keywords
- circuit
- control circuit
- input
- optical coupler
- discharge resistance
- 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.)
- Active
Links
Landscapes
- Electronic Switches (AREA)
Abstract
The utility model provides a kind of control circuit and air-conditioner set.According to control circuit of the present utility model, comprise input circuit and output circuit, be connected with electric capacity between the two poles of the earth of output circuit, control circuit also comprises capacitor discharging circuit, and capacitor discharging circuit comprises: discharge resistance, arranges with Capacitance parallel connection; ON-OFF control circuit, the conducting of controlled discharge resistance and electric capacity and disconnection; Input detecting circuit, detect the off-position of input circuit, and when input circuit is off-position, control switch control circuit makes discharge resistance and capacitors conductive.The utility model is by arranging the discharge resistance with Capacitance parallel connection, and the ON-OFF control circuit to coordinate with discharge resistance and input detecting circuit, when input circuit power-off, input detecting circuit control switch control circuit makes discharge resistance and capacitors conductive, from the electric charge that can consume the storage electric capacity rapidly, thus reduce electric shock risk, convenient debugging and maintenance.
Description
Technical field
The utility model relates to field of air conditioning, in particular to a kind of control circuit and air-conditioner set.
Background technology
Shown in composition graphs 1, in prior art, the business air conditioner unit overwhelming majority adopts Switching Power Supply design, high-voltage capacitance C3 is adopted to carry out energy storage to reach power supply object, particularly blower fan adopts DC driven unit, adopts Large Copacity high-voltage capacitance C3, after unit power down, generally need could being discharged completely of more than 15S, unit quits work.
Because power down time is long, think by mistake after easily causing power-off and discharged, can touch with hand, and reality unit within power-off 15S is in high pressure conditions always, once staff touching, cause Danger Electric shock risk.Particularly in the development phase, need manually constantly to carry out the test of power-off power-up routine, cause the situation of too much waiting for and touching by mistake and getting an electric shock; Simultaneously because unit power down time is long, cause difficulty to problem investigation after sale, once power-off time falls short of, cause unit to reset.
Utility model content
The utility model aim to provide a kind of can the control circuit of repid discharge and air-conditioner set.
The utility model provides a kind of control circuit, comprises input circuit and output circuit, and be connected with electric capacity between the two poles of the earth of output circuit, control circuit also comprises capacitor discharging circuit, and capacitor discharging circuit comprises: discharge resistance, arranges with Capacitance parallel connection; ON-OFF control circuit, the conducting of controlled discharge resistance and electric capacity and disconnection; Input detecting circuit, detect the off-position of input circuit, and when input circuit is off-position, control switch control circuit makes discharge resistance and capacitors conductive.
Further, input detecting circuit comprises isolating device, and the input of isolating device is connected with input circuit, the output control switch control circuit of isolating device.
Further, input detecting circuit also comprises bleeder circuit, and bleeder circuit is connected between the two poles of the earth of input circuit; Bleeder circuit has been arranged in series the first divider resistance and the second divider resistance, the input of isolating device is in parallel with the first divider resistance.
Further, isolating device is optical coupler, and the input of optical coupler is in parallel with the first divider resistance, the output control switch control circuit of optical coupler.
Further, optical coupler is triode output type optical coupler, and the emitter of optical coupler is connected with ON-OFF control circuit, and the collector electrode of optical coupler is connected with DC power supply.
Further, ON-OFF control circuit comprises the relay of switch and driving switch, and switch and discharge resistance are arranged in series; The first end ground connection of relay, the second end of relay is connected with the emitter of optical coupler.
The utility model additionally provides a kind of air-conditioner set, comprises aforesaid control circuit.
According to control circuit of the present utility model and air-conditioner set, by arranging the discharge resistance with Capacitance parallel connection, and the ON-OFF control circuit to coordinate with discharge resistance and input detecting circuit, when input circuit power-off, input detecting circuit control switch control circuit makes discharge resistance and capacitors conductive, from the electric charge that can consume the storage electric capacity rapidly, reduce electric shock risk, convenient debugging and maintenance.
Accompanying drawing explanation
The accompanying drawing forming a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the principle schematic of control circuit of the prior art;
Fig. 2 is the principle schematic according to control circuit of the present utility model.
Embodiment
Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
As shown in Figure 2, according to control circuit of the present utility model, comprise input circuit and output circuit, electric capacity C3 is connected with between the two poles of the earth of output circuit, control circuit also comprises capacitor discharging circuit, and capacitor discharging circuit comprises: discharge resistance R3, is arranged in parallel with electric capacity C3; ON-OFF control circuit, the conducting of controlled discharge resistance and electric capacity and disconnection; Input detecting circuit, detect the off-position of input circuit, and when input circuit is off-position, control switch control circuit makes discharge resistance and capacitors conductive.
Shown in composition graphs 2, input detecting circuit comprises isolating device, the input of isolating device is connected with input circuit, the output control switch control circuit of isolating device, namely isolating device passes through off-position or the power-up state control switch control circuit of input circuit, thus realizes access or the disconnection of discharge resistance R3.
Preferably, input detecting circuit also comprises bleeder circuit, and bleeder circuit is connected between the two poles of the earth of input circuit; Bleeder circuit has been arranged in series the first divider resistance R4 and the second divider resistance R5, the input of isolating device is in parallel with the first divider resistance R4, and the resistance of the first divider resistance R4 and the second divider resistance R5 can be selected as required.Bleeder circuit is set, the requirement of withstand voltage of isolating device input can be reduced, thus reduce costs, also can improve the fail safe of isolating device.
Particularly, isolating device is optical coupler U1, and the input of optical coupler U1 is in parallel with the first divider resistance R4, the output control switch control circuit of optical coupler.
More specifically, optical coupler U1 is triode output type optical coupler, the emitter of optical coupler is connected with ON-OFF control circuit, the collector electrode of optical coupler is connected with DC power supply, when input circuit is off-position, the collector electrode of optical coupler U1 and emitter disconnect, when input circuit is power-up state, the collector electrode of optical coupler U1 and emitter conducting, thus by DC power control ON-OFF control circuit.DC power supply can be 12V DC power supply, also can be the direct voltage of the 12V of the output pin output of other controllers etc.
Shown in composition graphs 2, ON-OFF control circuit comprises the relay of K switch 1 and driving switch K1, and switch and discharge resistance R3 are arranged in series; The first end ground connection of relay, the second end of relay is connected with the emitter of optical coupler.When collector electrode and the emitter conducting of optical coupler U1, DC power supply acts on relay, thus driving switch K1 action, discharge resistance R3 and electric capacity C3 is disconnected; When collector electrode and emitter disconnect, make discharge resistance R3 and electric capacity C3 conducting, thus make electric capacity C3 repid discharge.
The operation principle of control circuit of the present utility model is illustrated below in conjunction with Fig. 2.
When input circuit obtains electric, by the first divider resistance R4 and the second divider resistance R5 dividing potential drop, the voltage of an about 1.2V is obtained in the diode side (input) of optical coupler U1, optical coupler U1 is made to be in conducting state, thus the triode side (output) of optical coupler U1 is in conducting state (i.e. collector electrode and emitter conducting), thus mainboard there being the voltage supply relay of 12V, after relay obtains 12V voltage, by magnetic force, shell fragment is shifted onto top (relay is switched to top), automatic control switch K1 disconnects the discharge resistance R3 accessed, avoid unnecessary energy resource consumption, realize when unit normally works, in the non-place in circuit of discharge resistance R3, without the need to consuming electric energy, play energy-conservation object,
When input circuit power-off, the voltage of the diode side of optical coupler U1 is zero, diode is in cut-off state, thus the triode side CE level no current of optical coupler U1 is passed through, the upper terminal voltage of R2 resistance will be 0V, the control end voltage of relay is made also to be 0V voltage, i.e. Control end power-off, shell fragment in relay automatically returns to lower end (relay is switched to below), automatically in automatic for discharge resistance R3 place in circuit, consumed fast from the electricity being stored in jumbo electric capacity C3 by the form of heating, guarantee that unit is within 5S, the voltage of forceful electric power side is down to below 42V, avoid the problems such as artificial electric shock.
The utility model additionally provides a kind of air-conditioner set, comprises aforesaid control circuit, thus realizes at air-conditioner set after a power failure, and the powerful discharge resistance R3 of access, is consumed the electricity stored in electric capacity C3 fast by heating form automatically.When unit normally works, optical coupler U1 conducting, relay (relay is switched to top) is supplied mainboard there being the voltage of 12V, therefore automatic control switch K1 disconnects the discharge resistance R3 of access, avoid unnecessary energy resource consumption, play energy-conservation object, realize unit and normally work; During unit power-off, optical coupler U1 not conducting, the power-off of Control end, relay switches to the other end (relay is switched to below) automatically, in discharge resistance R3 place in circuit, consumes the electricity in electric capacity C3 fast, reduce electric shock risk, convenient debugging.
As can be seen from the above description, the utility model the above embodiments achieve following technique effect:
According to control circuit of the present utility model and air-conditioner set, by arranging the discharge resistance with Capacitance parallel connection, and the ON-OFF control circuit to coordinate with discharge resistance and input detecting circuit, when input circuit power-off, input detecting circuit control switch control circuit makes discharge resistance and capacitors conductive, from the electric charge that can consume the storage electric capacity rapidly, thus reduce electric shock risk, convenient debugging and maintenance.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (7)
1. a control circuit, comprises input circuit and output circuit, is connected with electric capacity, it is characterized in that between the two poles of the earth of described output circuit, and described control circuit also comprises capacitor discharging circuit, and described capacitor discharging circuit comprises:
Discharge resistance, is arranged with described Capacitance parallel connection;
ON-OFF control circuit, controls conducting and the disconnection of described discharge resistance and described electric capacity;
Input detecting circuit, detects the off-position of described input circuit, and when described input circuit is off-position, controls described ON-OFF control circuit and make described discharge resistance and described capacitors conductive.
2. control circuit according to claim 1, is characterized in that,
Described input detecting circuit comprises isolating device, and the input of described isolating device is connected with described input circuit, and the output of described isolating device controls described ON-OFF control circuit.
3. control circuit according to claim 2, is characterized in that,
Described input detecting circuit also comprises bleeder circuit, and described bleeder circuit is connected between the two poles of the earth of described input circuit;
Described bleeder circuit has been arranged in series the first divider resistance and the second divider resistance, the input of described isolating device is in parallel with described first divider resistance.
4. control circuit according to claim 3, is characterized in that,
Described isolating device is optical coupler, and the input of described optical coupler is in parallel with described first divider resistance, and the output of described optical coupler controls described ON-OFF control circuit.
5. control circuit according to claim 4, is characterized in that,
Described optical coupler is triode output type optical coupler, and the emitter of described optical coupler is connected with described ON-OFF control circuit, and the collector electrode of described optical coupler is connected with DC power supply.
6. control circuit according to claim 5, is characterized in that,
Described ON-OFF control circuit comprises switch and drives the relay of described switch, and described switch and described discharge resistance are arranged in series;
The first end ground connection of described relay, the second end of described relay is connected with the emitter of described optical coupler.
7. an air-conditioner set, comprises control circuit, it is characterized in that, the control circuit of described control circuit according to any one of claim 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420832861.1U CN204391734U (en) | 2014-12-23 | 2014-12-23 | Control circuit and air-conditioner set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420832861.1U CN204391734U (en) | 2014-12-23 | 2014-12-23 | Control circuit and air-conditioner set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204391734U true CN204391734U (en) | 2015-06-10 |
Family
ID=53364421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420832861.1U Active CN204391734U (en) | 2014-12-23 | 2014-12-23 | Control circuit and air-conditioner set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204391734U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578031A (en) * | 2014-12-23 | 2015-04-29 | 珠海格力电器股份有限公司 | Control circuit and air conditioner unit |
| CN114502862A (en) * | 2019-09-19 | 2022-05-13 | 大金工业株式会社 | Heat pump device |
-
2014
- 2014-12-23 CN CN201420832861.1U patent/CN204391734U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578031A (en) * | 2014-12-23 | 2015-04-29 | 珠海格力电器股份有限公司 | Control circuit and air conditioner unit |
| CN114502862A (en) * | 2019-09-19 | 2022-05-13 | 大金工业株式会社 | Heat pump device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103928958B (en) | A kind of charging and discharging lithium battery management circuit and lithium battery management system | |
| CN203734374U (en) | Switching circuit for main power supply and stand-by power supply | |
| CN203883692U (en) | Power board and energy release circuit thereof | |
| CN104505888A (en) | Mobile terminal and charging device | |
| CN104505890A (en) | Mobile terminal | |
| CN105048422B (en) | Switching transistor pressure drop holding circuit and application have the lithium battery protection circuit of the pressure drop holding circuit | |
| CN203366159U (en) | Digital temperature control system | |
| CN102999143A (en) | Intelligent control circuit of power adapter of notebook computer | |
| CN204391734U (en) | Control circuit and air-conditioner set | |
| CN202363962U (en) | DC power supply device capable of switching into stand-by power source | |
| CN201725734U (en) | Time-controlled power switch | |
| CN203084643U (en) | Double-power-supply power-on reset circuit for single chip microcomputer | |
| CN204376458U (en) | A kind of mobile terminal and charging device | |
| CN204810138U (en) | Terminal equipment's automation start shooting circuit and terminal equipment | |
| CN104578031A (en) | Control circuit and air conditioner unit | |
| CN203387480U (en) | Automatic reset device | |
| CN205142167U (en) | Time delay outage reset circuit | |
| CN209402490U (en) | A kind of delay electrification circuit | |
| CN204721326U (en) | A kind of hardware time-delay reset circuit and electronic product | |
| CN208508520U (en) | Discharge circuit, driving plate, controller and air-conditioning | |
| CN204012767U (en) | A kind of charging and discharging lithium battery management circuit and lithium battery management system | |
| CN107465247B (en) | Faraday capacitor delay power-off circuit suitable for intelligent cabinet control system | |
| CN105444351A (en) | Safe power-failure circuit and method of variable-frequency outdoor unit | |
| CN203352268U (en) | Bus capacitor charging/discharging circuit | |
| CN205070780U (en) | Power supply switch circuit and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |