CN202229359U - PTC auxiliary electric heating control circuit of air conditioner - Google Patents
PTC auxiliary electric heating control circuit of air conditioner Download PDFInfo
- Publication number
- CN202229359U CN202229359U CN2011203524049U CN201120352404U CN202229359U CN 202229359 U CN202229359 U CN 202229359U CN 2011203524049 U CN2011203524049 U CN 2011203524049U CN 201120352404 U CN201120352404 U CN 201120352404U CN 202229359 U CN202229359 U CN 202229359U
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- ptc
- auxiliary electric
- ptc auxiliary
- control circuit
- electric heater
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- 238000005485 electric heating Methods 0.000 title abstract 2
- 238000010438 heat treatment Methods 0.000 claims description 21
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
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Abstract
Air conditioner PTC auxiliary electric heating control circuit, adopt the control mode of timesharing power supply, PTC auxiliary electric heater divide into the parallelly connected unit module of a plurality of promptly, supplies power in proper order to all unit module timesharing to reduce the impulse current that produces when going up effectively, treat all unit modules and all supply power the back, provide heat energy by PTC auxiliary electric heater wholly again. The control circuit comprises a PTC auxiliary electric heater connected with the MCU chip, the PTC auxiliary electric heater is provided with at least 2 groups of unit modules which are connected in parallel and supply power in a time-sharing manner, each group of unit modules is connected with a relay and a relay driving device IC2, and each group of unit modules is respectively connected with an I/O port of the MCU. Each group of unit modules of the PTC auxiliary electric heater is respectively connected with an MCU chip signal pin which sequentially outputs power supply signals according to time intervals.
Description
Technical field
The utility model is a kind of control circuit that air-conditioner PTC electrical auxiliary heater is supplied power at times that is applied to, and belongs to household appliance technical field.
Background technology
In the winter of cold, air-conditioner mainly is to adopt electric heater under heating mode.Existing electric heater mainly contains pipe type heating mode, but tubular type electrical heating surface loading has restriction, and promptly in limited installing space, it is too big that the power of electric heater can't be done, especially the fixed frequency air conditioner device.The auxiliary electrical heating power accounts for the winter complete machine and heats more than 50% of electricity consumption, considers that from the angle that improves heating effect electric heater adopts the High-Power PTC auxiliary heater at large at present.
Ptc heater starts dash current phenomenon of moment existence in power supply, and power large impact electric current more is big along with more.Shown in the accompanying drawing 1 of back, the auxiliary heater of current floor air conditioner is to reach more than 2000 watts, when opening heating mode; To relay output power supply signal, also directly supply power to ptc heater, at this powered on moment by relay closes through driver IC 2 for the MCU chip; The above greater impact electric current of 15 peaces will appear; Combining complete machine self-operating electric current again, add up to appointment the above rush of current of 30 peaces to occur, will be big peak surge for the controller switching equipment that uses the air-conditioner environment; Therefore inevitably controller switching equipment is had a negative impact, long-time use can cause controller switching equipment to damage or tripping operation.
In view of this, the special present patent application that proposes.
The utility model content
The described air-conditioner PTC of the utility model auxiliary electrical heating control circuit; Its purpose is to solve the problem that above-mentioned prior art exists and adopts the control mode of time sharing power supply; Be that the PTC electrical auxiliary heater is divided into several parallelly connected unit modules, to the power supply successively at times of all unit modules, to reduce the dash current that produces when powering on effectively; After treating that whole unit modules are all supplied power, by the PTC electrical auxiliary heater heat energy is provided integrally again.
For realizing above-mentioned purpose of design, described air-conditioner PTC auxiliary electrical heating control circuit mainly includes:
Be connected in the PTC electrical auxiliary heater of MCU chip, the difference with the prior art part is,
Described PTC electrical auxiliary heater has the unit module of the parallel connection of at least 2 groups, time sharing power supply, and every group of unit module connects a relay.
For improving the power supply control to each unit module, the corrective measure that can take is that every group of unit module of PTC electrical auxiliary heater connects the MCU chip of exporting power supply signal by at times, successively through relay driver respectively.
In sum; Advantage and beneficial effect that the utility model air-conditioner PTC auxiliary electrical heating control circuit has are; Through mode to a plurality of unit module time sharing power supplies; Dash current is reduced in the controlled range, with the damage of avoiding causing controller switching equipment, avoid the tripping operation phenomenon of cutting off the power supply taking place because of starting the heating of PTC auxiliary electrical because of dash current is excessive.
Description of drawings
Combine following accompanying drawing that the utility model is done further explanation and explanation at present.
Fig. 1 is the PTC auxiliary electrical heating control circuit figure that prior art is used;
Fig. 2 is the air-conditioner PTC auxiliary electrical heating control circuit figure that the utility model proposes.
The specific embodiment
Embodiment 1, and is as shown in Figure 2, and the air-conditioner PTC auxiliary electrical heating control circuit that present embodiment provides includes:
Be connected in the PTC electrical auxiliary heater of MCU chip and relay driver IC2, the PTC electrical auxiliary heater has 2 groups of parallel connections, the unit module L1 of time sharing power supply, L2.
Unit module L1 is through the signal pins P1 of relay R Y2 and relay driver IC2 connection MCU chip, and unit module L2 connects the signal pins P2 of MCU chip through relay R Y3 and relay driver IC2.
When starting heating mode in the winter time, employing be PTC auxiliary electrical heating at times, power supply mode successively, promptly in power supply process at times, the MCU chip through relay driver IC2 in turn to one group of unit module output power supply signal wherein.
The PTC electrical auxiliary heater is divided into 2 parallelly connected unit according to its power bracket of 2000 watts.Dash current by the PTC electrical auxiliary heater is 1.5 times of calculating of current value under the specified stable state, 1000 watts dash current than high 2.3 peaces of rated current about, and 2000 watts of dash currents exceed 4.6 peaces than specified.
When the High-Power PTC electrical auxiliary heater is divided into 2 lower-powered unit modules; Adopt the time sharing power supply mode; After the dash current of first unit module L1 disappears, give another unit module L2 power supply again, promptly each dash current all can be controlled in than about high 2.3 peaces of rated value.
Particularly, the signal pins 3C through MCU chip and relay driver IC2 controls closing relay RY1, RY2 in advance, is that the unit module L1 to the PTC electrical auxiliary heater supplies power separately at this moment;
According to the dash current time cycle; After 1.5 minutes, pass through the signal pins 4C of MCU chip and relay driver driver IC 2 again; Control closing relay RY3; Be the unit module L2 power supply to the PTC electrical auxiliary heater at this moment, unit module L2 also produces identical, controllable dash current.
In the process of unit module L2 power supply, unit module L1 is still at power supplying and heating.
When closing when heating state, send 2 control signals by the MCU chip simultaneously through driver IC 2, break off all relay R Y1, RY2 and RY3 with control, thereby withdraw from the electrical heating mode of operation.
Claims (2)
1. air-conditioner PTC auxiliary electrical heating control circuit; Include the PTC electrical auxiliary heater that is connected in the MCU chip; It is characterized in that: described PTC electrical auxiliary heater has the unit module of the parallel connection of at least 2 groups, time sharing power supply, and every group of unit module connects a relay.
2. air-conditioner PTC auxiliary electrical heating control circuit according to claim 1 is characterized in that: every group of unit module of PTC electrical auxiliary heater connects the MCU chip of exporting power supply signal by at times, successively through relay driver (IC2) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203524049U CN202229359U (en) | 2011-09-20 | 2011-09-20 | PTC auxiliary electric heating control circuit of air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203524049U CN202229359U (en) | 2011-09-20 | 2011-09-20 | PTC auxiliary electric heating control circuit of air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202229359U true CN202229359U (en) | 2012-05-23 |
Family
ID=46079944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203524049U Expired - Fee Related CN202229359U (en) | 2011-09-20 | 2011-09-20 | PTC auxiliary electric heating control circuit of air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202229359U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103024951A (en) * | 2011-09-20 | 2013-04-03 | 海信（山东）空调有限公司 | Control circuit and method of PTC (Positive Temperature Coefficient) auxiliary electric heating of air conditioner |
| CN105423486A (en) * | 2015-11-05 | 2016-03-23 | 珠海格力电器股份有限公司 | Method and device for controlling starting of electric heater |
-
2011
- 2011-09-20 CN CN2011203524049U patent/CN202229359U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103024951A (en) * | 2011-09-20 | 2013-04-03 | 海信（山东）空调有限公司 | Control circuit and method of PTC (Positive Temperature Coefficient) auxiliary electric heating of air conditioner |
| CN105423486A (en) * | 2015-11-05 | 2016-03-23 | 珠海格力电器股份有限公司 | Method and device for controlling starting of electric heater |
| CN105423486B (en) * | 2015-11-05 | 2018-04-13 | 珠海格力电器股份有限公司 | Method and device for controlling starting of electric heater |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 Termination date: 20170920 |