CN215498772U - Refrigerator starter circuit with auxiliary winding starting-free function - Google Patents
Refrigerator starter circuit with auxiliary winding starting-free function Download PDFInfo
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- CN215498772U CN215498772U CN202121462595.4U CN202121462595U CN215498772U CN 215498772 U CN215498772 U CN 215498772U CN 202121462595 U CN202121462595 U CN 202121462595U CN 215498772 U CN215498772 U CN 215498772U
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Abstract
The utility model is suitable for the field of refrigerator starters, and provides a refrigerator starter circuit with no auxiliary starting of a secondary winding, which comprises a bidirectional thyristor TR1, a relay RY1, a refrigerator compressor unit, a main control unit and a resistor R5 and aims to solve the technical problems that in the prior art, a refrigerator compressor needs a starting device to participate in starting, the circuit cost is increased, a refrigerator starter without auxiliary starting is not needed, the running power of the compressor cannot be adjusted, and the cost of an overload protector is high, so that the price of the refrigerator starter is high.
Description
Technical Field
The utility model belongs to the field of refrigerator starters, and particularly relates to a refrigerator starter circuit with no auxiliary starting of an auxiliary winding.
Background
At present, the common secondary winding of the refrigerator compressor on the market needs resistance, PTC or starting capacitor for auxiliary starting, so that the refrigerator compressor needs a starting device to participate in starting, the circuit cost is increased, in addition, the running power of the refrigerator compressor can not be controlled, an expensive overload protector is still adopted in the overload protection function, and the refrigerator starter which does not need auxiliary starting is not arranged at present, the running power of the compressor can not be adjusted, in addition, the overload protector is high in cost, and the price of the refrigerator starter is high.
Disclosure of Invention
The utility model aims to provide a refrigerator starter circuit with no auxiliary starting of a secondary winding, and aims to solve the technical problems that in the prior art, a refrigerator compressor needs a starting device to participate in starting, the circuit cost is increased, a refrigerator starter without auxiliary starting is not needed, the running power of the compressor cannot be adjusted, and the price of the refrigerator starter is high due to the fact that an overload protector is high in cost.
The utility model is realized in such a way that the refrigerator starter circuit with no auxiliary starting of the secondary winding comprises a bidirectional thyristor TR1, a relay RY1, a refrigerator compressor unit, a main control unit and a resistor R5, wherein the T2 end of the bidirectional thyristor TR1 is connected with one end of a power supply AC, the T1 end of the bidirectional thyristor TR1 is connected with the main control unit, the 3 end of the relay PY1 and the refrigerator compressor unit, the T3 end of a control electrode are connected with the main control unit, the 4 end of the relay RY1 is connected with the refrigerator compressor unit, the 1 end and the 2 end of the relay RY1 are connected with the main control unit, the refrigerator compressor unit is respectively connected with the other end of the power supply AC and one end of the resistor R5, and the other end of the resistor R5 is respectively connected with the main control unit, the refrigerator compressor unit and GND.
The further technical scheme of the utility model is as follows: the main control unit comprises a processor MCU, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a capacitor C1, a triode T1, a triode T2 and a diode D1, wherein a pin A0 of the processor MCU is connected with a base electrode of the triode T1 through the resistor R3, a collector electrode of the triode T1 is respectively connected with a control electrode T3 end of the bidirectional triode TR1, one end of the resistor R1 and one end of the capacitor C1 through a resistor R2, the other end of the resistor R1 and the other end of the capacitor C1 are both connected with a1 end of the bidirectional triode TR1, a pin A1 of the processor MCU is connected with a base electrode of the triode T2 through the resistor R4, a collector electrode of the triode T2 is respectively connected with an anode of the diode D1 and a 2 end of the relay PY1, a cathode of the diode D1 is connected with a1 end of the PY1, and a power supply pin A3 and one end of the other end of the MCU 5 are respectively connected with an AC 5, the other end of the resistor R5, the emitter of the transistor T1 and the emitter of the transistor T2 are all connected to GND.
The further technical scheme of the utility model is as follows: the refrigerator compressor unit comprises a compressor M and an operating capacitor CF1, wherein the 1 end of the compressor M is connected with the other end of the resistor R5, the 2 end of the compressor M is respectively connected with one end of the operating capacitor CF1, the 1 end of the bidirectional triode thyristor TR1, and the 3 end of the bidirectional triode thyristor TR1 are respectively connected with the 4 end of the relay PY1 and the other end of the operating capacitor CF 1.
The further technical scheme of the utility model is as follows: the refrigerator starter circuit further comprises a fuse PUSE, wherein the 1 end of the fuse PUSE is connected with the other end of the power supply AC, and the 2 end of the fuse PUSE is respectively connected with the A3 pin of the processor MCU and one end of the resistor R5.
The utility model has the beneficial effects that: this kind of refrigerator starter circuit passes through treater MCU control bidirectional thyristor TR1 and relay RY1 conduction time interval, realize that compressor M starts, adjust bidirectional thyristor TR1 conduction angle through treater MCU, can control compressor M's operating power, through treater MCU detection resistance R5 both ends pressure drop, judge compressor M operating current, prevent overpower phenomenon, this kind of refrigerator starter circuit simple structure in addition, save conventional PTC and overload protector, greatly reduced circuit cost, and working property is stable.
Drawings
Fig. 1 is an electrical schematic diagram of a refrigerator starter circuit with no auxiliary start of a secondary winding according to an embodiment of the present invention.
Detailed Description
Fig. 1 shows a refrigerator starter circuit with no auxiliary start of a secondary winding, which is provided by the utility model, and the refrigerator starter circuit comprises a bidirectional thyristor TR1, a relay RY1, a refrigerator compressor unit, a main control unit and a resistor R5, wherein a T2 end of the bidirectional thyristor TR1 is connected with an AC end of a power supply, a T1 end is connected with the main control unit, a3 end of the relay PY1, the refrigerator compressor unit and a control electrode T3 end are connected with the main control unit, a 4 end of the relay RY1 is connected with the refrigerator compressor unit, 1 end and 2 end are both connected with the main control unit, the refrigerator compressor unit is respectively connected with the other end of the power supply AC and one end of the resistor R5, and the other end of the resistor R5 is respectively connected with the main control unit, the refrigerator compressor unit and GND.
The main control unit comprises a processor MCU, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a capacitor C1, a triode T1, a triode T2 and a diode D1, wherein a pin A0 of the processor MCU is connected with a base electrode of the triode T1 through the resistor R3, a collector electrode of the triode T1 is respectively connected with a control electrode T3 end of the bidirectional triode TR1, one end of the resistor R1 and one end of the capacitor C1 through a resistor R2, the other end of the resistor R1 and the other end of the capacitor C1 are both connected with a1 end of the bidirectional triode TR1, a pin A1 of the processor MCU is connected with a base electrode of the triode T2 through the resistor R4, a collector electrode of the triode T2 is respectively connected with an anode of the diode D1 and a 2 end of the relay PY1, a cathode of the diode D1 is connected with a1 end of the PY1, and a power supply pin A3 and one end of the other end of the MCU 5 are respectively connected with an AC 5, the other end of the resistor R5, the emitter of the transistor T1 and the emitter of the transistor T2 are all connected to GND.
The refrigerator compressor unit comprises a compressor M and an operating capacitor CF1, wherein the 1 end of the compressor M is connected with the other end of the resistor R5, the 2 end of the compressor M is respectively connected with one end of the operating capacitor CF1, the 1 end of the bidirectional triode thyristor TR1, and the 3 end of the bidirectional triode thyristor TR1 are respectively connected with the 4 end of the relay PY1 and the other end of the operating capacitor CF 1.
The refrigerator starter circuit further comprises a fuse PUSE, wherein the 1 end of the fuse PUSE is connected with the other end of the power supply AC, and the 2 end of the fuse PUSE is respectively connected with the A3 pin of the processor MCU and one end of the resistor R5.
When the refrigerator starter circuit works, the processor MCU controls the conduction of the bidirectional thyristor TR1 and the relay RY1 through the triode T1 and the triode T2, controls the conduction time interval of the bidirectional thyristor TR1 and the relay RY1, realizes the starting of the compressor M, and controls the triode T2 to be turned off after the starting of the compressor M is finished, and the relay RY1 is in a turn-off state; the processor MCU controls the triode T1 to lead the bidirectional triode TR1 to be conducted at different conduction angles, thus realizing the power control of the compressor M; the processor MCU judges the running current of the compressor M by detecting the voltage drop at two ends of the resistor R5, if the running current exceeds the set current, the bidirectional thyristor TR1 is turned off, the protection purpose is achieved, and the cost of the controller can be reduced by adopting a common FUSE FUSE.
This kind of refrigerator starter circuit passes through treater MCU control bidirectional thyristor TR1 and relay RY1 conduction time interval, realize that compressor M starts, adjust bidirectional thyristor TR1 conduction angle through treater MCU, can control compressor M's operating power, through treater MCU detection resistance R5 both ends pressure drop, judge compressor M operating current, prevent overpower phenomenon, this kind of refrigerator starter circuit simple structure in addition, save conventional PTC and overload protector, greatly reduced circuit cost, and working property is stable.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (4)
1. A refrigerator starter circuit with auxiliary winding starting without assistance is characterized in that: refrigerator starter circuit includes triac TR1, relay RY1, refrigerator compressor unit, main control unit and resistance R5, triac TR 1's T2 end is connected power AC one end, T1 end and is connected the main control unit, relay PY 1's 3 ends and refrigerator compressor unit, control pole T3 end connect the main control unit, relay RY 1's 4 end is connected the main control unit is all connected to refrigerator compressor unit, 1, 2 ends, the refrigerator compressor unit is connected power AC other end and resistance R5's one end respectively, the resistance R5 other end is connected respectively the main control unit, refrigerator compressor unit and GND.
2. The refrigerator starter circuit according to claim 1, wherein the main control unit comprises a processor MCU, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a capacitor C1, a transistor T1, a transistor T2 and a diode D1, wherein a0 pin of the processor MCU is connected to a base of the transistor T1 through the resistor R3, a collector of the transistor T1 is connected to a control terminal T3 of the triac TR1, one end of the resistor R1 and one end of the capacitor C1 through a resistor R2, the other end of the resistor R1 and the other end of the capacitor C1 are both connected to a terminal 1 of the triac TR1, a1 pin of the processor MCU is connected to a base of the transistor T1 through the resistor R1, a collector of the transistor T1 is connected to an anode of the diode D1 and a terminal 2 of the relay PY1, a cathode of the diode D1 is connected to a cathode of the relay PY1, the pin A3 of the processor MCU is respectively connected with the other end of a power supply AC and one end of the resistor R5, and the other end of the resistor R5, the emitter of the triode T1 and the emitter of the triode T2 are all connected with GND.
3. The refrigerator starter circuit as claimed in claim 2, wherein the refrigerator compressor unit includes a compressor M and a running capacitor CF1, wherein a1 terminal of the compressor M is connected to the other terminal of the resistor R5, a 2 terminal of the compressor M is connected to one terminal of the running capacitor CF1, and a1 terminal and a3 terminal of the triac TR1 are connected to a 4 terminal of the relay PY1 and the other terminal of the running capacitor CF1, respectively.
4. The refrigerator starter circuit according to claim 3, further comprising an over-fuse PUSE, wherein a1 terminal of the fuse PUSE is connected to the other terminal of the power source AC, and a 2 terminal of the fuse PUSE is connected to the A3 pin of the processor MCU and one terminal of the resistor R5, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121462595.4U CN215498772U (en) | 2021-06-29 | 2021-06-29 | Refrigerator starter circuit with auxiliary winding starting-free function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121462595.4U CN215498772U (en) | 2021-06-29 | 2021-06-29 | Refrigerator starter circuit with auxiliary winding starting-free function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215498772U true CN215498772U (en) | 2022-01-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121462595.4U Active CN215498772U (en) | 2021-06-29 | 2021-06-29 | Refrigerator starter circuit with auxiliary winding starting-free function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215498772U (en) |
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2021
- 2021-06-29 CN CN202121462595.4U patent/CN215498772U/en active Active
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