CN106329890A - Variable-frequency refrigeration equipment and low-power control circuit for same - Google Patents
Variable-frequency refrigeration equipment and low-power control circuit for same Download PDFInfo
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- CN106329890A CN106329890A CN201611069706.9A CN201611069706A CN106329890A CN 106329890 A CN106329890 A CN 106329890A CN 201611069706 A CN201611069706 A CN 201611069706A CN 106329890 A CN106329890 A CN 106329890A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0032—Control circuits allowing low power mode operation, e.g. in standby mode
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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
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- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses variable-frequency refrigeration equipment and a low-power control circuit for the same. The low-power control circuit comprises a switch power circuit, a controllable switch circuit, a variable-frequency board circuit and a main control board circuit. The switch power circuit comprises a first power output unit and a second power output unit, a first-branch power supply is outputted by the switch power circuit via the first power output unit and is supplied to the main control board circuit, and a second-branch power supply is outputted via the second power output unit and is supplied to the variable-frequency board circuit; the first power output unit is connected with the main control board circuit, the second power output unit is connected with the variable-frequency board circuit by the controllable switch circuit, and the controllable switch circuit can be opened or closed under the control of the main control board circuit. The variable-frequency refrigeration equipment and the low-power control circuit have the advantages that the controllable switch circuit is in a closed state under the control of the main control board circuit when the variable-frequency refrigeration equipment is in a standby state, so that power supply channels for the variable-frequency board circuit can be cut off, power consumption of the variable-frequency refrigeration equipment on standby can be reduced, and energy wastage can be prevented.
Description
Technical field
The present invention relates to technical field of refrigeration equipment, particularly to a kind of low power consumption control electricity for frequency conversion refrigeration plant
Road and a kind of frequency conversion refrigeration plant.
Background technology
Along with the enforcement of new " household electric refrigerator power consumption limit value and efficiency grade " mandatory efficiency national standard, by
Have obvious advantage in converter technique at the energy-conservation aspect of product, the accounting of frequency conversion refrigeration plant such as frequency conversion household refrigerator-freezer with
And be significantly increased.
At present, the circuit board of frequency conversion household refrigerator-freezer mainly has two kinds of designs, and one is that master control borad divides with frequency conversion plate
Designing from formula, another kind is master control borad and frequency conversion plate unitary design, and wherein unitary design scheme is in assembly technology, cost control
The aspects such as system have obvious advantage.But the product of current unitary design scheme also exists bigger than normal the asking of stand-by power consumption
Topic, predominantly after frequency conversion plate receives the shutdown command of master control borad, frequency conversion plate enters holding state, though now compressor drives
The power-off of galvanic electricity road, but signal receiving circuit, discharge circuit, driving control chip etc. are still powered by supply unit, even if driving
Dynamic control chip can enter park mode, and it needs for consuming a part of electric energy.The stand-by power consumption of general frequency conversion plate is
About 0.5W～1W, accumulates over a long period or can cause substantial amounts of energy waste.
Summary of the invention
It is contemplated that one of technical problem solved the most to a certain extent in above-mentioned technology.To this end, the present invention
One purpose is to propose a kind of low power consumpting controling circuit for frequency conversion refrigeration plant, it is possible to be substantially reduced frequency conversion refrigeration plant
Power consumption time standby, it is to avoid energy waste.
Further object is that a kind of frequency conversion refrigeration plant of proposition.
For reaching above-mentioned purpose, a kind of low-power consumption control for frequency conversion refrigeration plant that one aspect of the present invention embodiment proposes
Circuit processed, including switching power circuit, gate-controlled switch circuit, frequency conversion plate circuit and master control borad circuit, wherein, described Switching Power Supply
Circuit includes the first power output unit and second source output unit, and described switching power circuit is defeated by described first power supply
Go out unit output first via power supply supply described master control borad circuit, and export the by described second source output unit
Two-way power supply power supply is to supply described frequency conversion plate circuit；Described first power output unit is connected with described master control borad circuit, institute
Stating second source output unit to be connected with described frequency conversion plate circuit by described gate-controlled switch circuit, described master control borad circuit is used for
Control being opened or closed of described gate-controlled switch circuit, wherein, when described frequency conversion refrigeration plant is in holding state, described master
Control plate circuit controls described gate-controlled switch circuit and is off, to cut off the supply access of described frequency conversion plate circuit.
The low power consumpting controling circuit for frequency conversion refrigeration plant according to embodiments of the present invention, switching power circuit is by the
One power output unit output first via power supply is supply master control borad circuit, and exports the by second source output unit
Two-way power supply power supply is to supply frequency conversion plate circuit, thus the master control borad of frequency conversion refrigeration plant and frequency conversion plate share a set of Switching Power Supply
Circuit, so when frequency conversion refrigeration plant is without refrigeration demand, frequency conversion plate circuit gets final product out of service and enters holding state, i.e. becomes
Frequently, when refrigeration plant is in holding state, master control borad circuit controls gate-controlled switch circuit and is off, to cut off frequency conversion plate
The supply access of circuit, it is achieved the purpose of frequency conversion plate circuit zero-power in the standby state, greatly reduces frequency conversion refrigeration plant
Power consumption time standby, it is to avoid energy waste, energy-conserving and environment-protective.
According to one embodiment of present invention, described switching power circuit use reverse excitation circuit design, wherein, described in open
Pass power circuit farther includes: transformer unit, and described transformer unit is for the first unidirectional current output the according to input
Two unidirectional currents and the 3rd unidirectional current, wherein, described first power output unit is for according to described second unidirectional current output
First via power supply, described second source output unit is for exporting described two-way power supply electricity according to described 3rd unidirectional current
Source；Feedback unit, described feedback unit is used for the voltage to described first via power supply and/or the electricity of the second road power supply
Pressure carries out feeding back with output voltage feedback information；Control unit, described control unit is for raw according to described voltage feedback information
Become modulated signal, so that described first unidirectional current is modulated so that described transformer unit export described second unidirectional current and
3rd unidirectional current.
Specifically, described gate-controlled switch circuit is control relay circuit, and described control relay circuit includes: the first electricity
Resistance, one end of described first resistance is connected with the control output end of the main control chip in described master control borad circuit；First audion,
The base stage of described first audion is connected with the other end of described first resistance, and the emitter stage of described first audion connects the first ginseng
Examine ground；Second resistance, described second resistance is connected to the base stage and described first of described first audion with reference between ground；Relay
Device, one end of described relay coil is connected with the colelctor electrode of described first audion, the other end of described relay coil with
Described first via power supply be connected, one end of described relay switch is connected with described second source output unit, described in continue
The other end of electric switch is connected with described frequency conversion plate circuit；Protection diode, the anode of described protection diode continues with described
One end of electric apparatus coil is connected, and the negative electrode of described protection diode is connected with the other end of described relay coil.
According to one embodiment of present invention, when described feedback unit, the voltage of described first via power supply is carried out instead
During feedback, described feedback unit includes: the 3rd resistance, and one end of described 3rd resistance is connected with described first via power supply；Frequently
Rate compensates electric capacity, and one end of described frequency compensation capacitance is connected with the other end of described 3rd resistance, described frequency compensation capacitance
The other end be connected with described control unit；4th resistance, one end of described 4th resistance and the other end of described 3rd resistance
Be connected, the other end of described 4th resistance with described first with reference to be connected；Reference power supply chip, described reference power supply chip
First end is connected with the other end of described frequency compensation capacitance, the second end of described reference power supply chip and described first reference ground
Be connected, the 3rd end of described reference power supply chip respectively with the other end of described 3rd resistance, one end of described 4th resistance and
One end of described frequency compensation capacitance is connected；Soft start capacitor, the positive terminal of described soft start capacitor is electric with described benchmark respectively
First end of source chip is connected with the other end of described frequency compensation capacitance, the negative pole end of described soft start capacitor and described first
It is connected with reference to ground.
Further, according to one embodiment of present invention, described control unit includes: switching power source chip, described in open
The modulation outfan closing power supply chip is connected with the armature winding of described transformer unit；Feedback diode, described feedback two pole
The anode of pipe is connected with the third time level winding of described transformer unit；5th electric capacity, one end of described 5th electric capacity is with described
The negative electrode of feedback diode be connected, the other end of described 5th electric capacity and second with reference to be connected；Optocoupler, the first of described optocoupler
End is connected with the feedback end of described switching power source chip, the second end of described optocoupler respectively with one end and the institute of described 5th electric capacity
The negative electrode stating feedback diode is connected, and the 3rd end of described optocoupler passes through the 5th resistance and described first power output unit phase
Even, the 4th end of described optocoupler is connected with the other end of described frequency compensation capacitance, the 3rd end of described optocoupler and the 4th end it
Between connect have the 6th resistance.
According to one embodiment of present invention, described first power output unit includes: the first diode, the described 1st
The anode of pole pipe is connected with the first secondary windings of described transformer unit；First inductance, one end of described first inductance is respectively
It is connected with the negative electrode of described first diode and described 5th resistance, the other end of described first inductance and described 3rd resistance
One end is connected；First electric capacity, the positive terminal of described first electric capacity is connected with the other end of described first inductance, described first electric capacity
Negative pole end with described first with reference to be connected, the positive terminal of described first electric capacity is defeated as described first power output unit
Go out end；3rd electric capacity, described 3rd electric capacity is in parallel with described first electric capacity.
According to one embodiment of present invention, described second source output unit includes: the second diode, the described 2nd 2
The anode of pole pipe is connected with the second subprime winding of described transformer unit；Second electric capacity, the positive terminal of described second electric capacity with
The negative electrode of described second diode be connected, the negative pole end of described second electric capacity and second with reference to be connected, described second electric capacity
Positive terminal is as the outfan of described second source output unit；4th electric capacity, described 4th electric capacity is with described second electric capacity also
Connection.
According to one embodiment of present invention, described frequency conversion refrigeration plant can be frequency conversion household refrigerator-freezer.
According to one embodiment of present invention, described frequency conversion plate circuit and described master control borad circuit integrate design.
Additionally, the embodiment of the present invention also proposed a kind of frequency conversion refrigeration plant, it includes above-mentioned setting for frequency conversion refrigeration
Standby low power consumpting controling circuit.
The frequency conversion refrigeration plant of the embodiment of the present invention, by above-mentioned low power consumpting controling circuit, it is possible to be substantially reduced standby
Time power consumption, it is to avoid energy waste, energy-conserving and environment-protective.
Accompanying drawing explanation
Fig. 1 is the block diagram of the low power consumpting controling circuit for frequency conversion refrigeration plant according to embodiments of the present invention；
And
Fig. 2 be according to an embodiment of the invention for frequency conversion refrigeration plant low power consumpting controling circuit circuit signal
Figure.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, the most from start to finish
Same or similar label represents same or similar element or has the element of same or like function.Below with reference to attached
The embodiment that figure describes is exemplary, it is intended to is used for explaining the present invention, and is not considered as limiting the invention.
The low power consumpting controling circuit for frequency conversion refrigeration plant according to embodiments of the present invention is described with reference to the accompanying drawings
And there is the frequency conversion refrigeration plant of this low power consumpting controling circuit.Wherein, frequency conversion refrigeration plant can be frequency conversion household refrigerator-freezer.
Shown in Fig. 1 and Fig. 2, the low power consumpting controling circuit for frequency conversion refrigeration plant of the embodiment of the present invention includes out
Close power circuit 100, gate-controlled switch circuit 300, frequency conversion plate circuit 400 and master control borad circuit 200.
Wherein, as in figure 2 it is shown, switching power circuit 100 includes that the first power output unit 101 and second source output are single
Unit 102, switching power circuit 100 exports first via power supply VCC1 to supply master control by the first power output unit 101
Plate circuit 200, and export the second road power supply VCC2 to supply frequency conversion plate circuit 400 by second source output unit 102.
First power output unit 101 is connected with master control borad circuit 200, and second source output unit 102 is by gate-controlled switch circuit 300
Being connected with frequency conversion plate circuit 400, master control borad circuit 200 is used for controlling being opened or closed of gate-controlled switch circuit 300, and, when
When frequency conversion refrigeration plant is in holding state, master control borad circuit 200 controls gate-controlled switch circuit 300 and is off, to cut
The supply access of disconnected frequency conversion plate circuit 400 so that frequency conversion plate circuit 400 zero-power in the standby state.
It is to say, in an embodiment of the present invention, master control borad circuit 200 and frequency conversion plate circuit 400 share a set of switch
Power circuit 100, after civil power after filtering rectification, the first unidirectional current access switch power circuit that high voltage direct current is the most following
100, switching power circuit 100 can use reverse excitation circuit to design, and switching power circuit 100 has two-way insulating power supply to export, the
One road power supply supply master control borad circuit 200 i.e. master control borad and peripheral interlock circuit, the second road power supply is opened by controlled
Frequency conversion plate circuit 400 i.e. frequency conversion drive plate and peripheral interlock circuit is supplied after closing circuit 300.Wherein, in frequency conversion refrigeration plant example
When having refrigeration demand such as frequency conversion household refrigerator-freezer, master control borad circuit 200 controls gate-controlled switch circuit 300 and closes, and such frequency conversion is driven
Dynamic plate and peripheral interlock circuit obtain electric after enter normal operating conditions, frequency conversion refrigeration plant such as frequency conversion household refrigerator-freezer is just being carried out
Often work；When such as frequency conversion household refrigerator-freezer is without refrigeration demand for frequency conversion refrigeration plant, frequency conversion plate circuit 400 i.e. frequency conversion drive plate
And periphery interlock circuit gets final product out of service and enters holding state, now gate-controlled switch can be controlled by master control borad circuit 200
Circuit 300 disconnects, and cuts off the power supply of supply frequency conversion plate circuit 400, thus reaches frequency conversion plate circuit 400 zero power in the standby state
The purpose of consumption.
According to one embodiment of present invention, as in figure 2 it is shown, switching power circuit 100 can use reverse excitation circuit to design,
This switching power circuit 100 farther includes: transformer unit 103, feedback unit 104 and control unit 105.Transformer unit
103 include armature winding, the first secondary windings, second subprime winding and third time level winding, and transformer unit 103 is for basis
First unidirectional current of input exports the second unidirectional current and the 3rd unidirectional current, and wherein, the first power output unit 101 is for according to the
Two unidirectional current output first via power supply VCC1, second source output unit 102 is for according to the 3rd unidirectional current output second
Road power supply VCC2.Feedback unit 104 is used for the voltage to first via power supply VCC1 and/or the second road power supply
The voltage of VCC2 carries out feeding back and feeds back to control unit 105 with output voltage, and control unit 105 is for according to Voltage Feedback
Information generates modulated signal, to be modulated the first unidirectional current, so that transformer unit 103 exports the second unidirectional current and the 3rd
Unidirectional current, wherein, control unit 105 internal can integrated power switching tube such as MOSFET, such control unit 105 is according to voltage
Feedback information adjusts the output to the dutycycle of the control signal of power switch pipe, it is achieved be modulated the first unidirectional current, from
And make transformer unit 103 export the second unidirectional current according to the first unidirectional current by the first secondary windings, and by second time
Level winding output the 3rd unidirectional current.
Specifically, as in figure 2 it is shown, gate-controlled switch circuit 300 can be control relay circuit, this control relay circuit
Including: the first resistance R1, the first audion Q1, the second resistance R2, relay K 1 and protection diode D4.The one of first resistance R1
End is connected with the control output end of the main control chip U1 in master control borad circuit 200, the base stage of the first audion Q1 and the first resistance
The other end of R1 is connected, and the emitter stage of the first audion Q1 connects first with reference to ground GND1；Second resistance R2 is connected to the one or three pole
Between the base stage of pipe Q1 and first is with reference to ground GND1；One end of relay coil is connected with the colelctor electrode of the first audion Q1, continues
The other end of electric apparatus coil is connected with first via power supply VCC1, one end of relay switch and second source output unit
102 are connected, and the other end of relay switch is connected with frequency conversion plate circuit 400；The anode of protection diode D4 and relay coil
One end be connected, protection diode D4 negative electrode be connected with the other end of relay coil.
It is to say, control relay circuit by audion Q1, the first resistance R1, the second resistance R2, relay K 1 and is protected
Protect diode D4 composition.When such as frequency conversion household refrigerator-freezer has refrigeration demand to frequency conversion refrigeration plant, the control of main control chip U1
Outfan I/O exports high level signal, and audion Q1 turns on, and controls relay K 1 adhesive, frequency conversion plate circuit 400 electric after enter
Normal operating conditions；When such as frequency conversion household refrigerator-freezer is without refrigeration demand for frequency conversion refrigeration plant, frequency conversion plate circuit 400 can stop
Only running and enter holding state, now the control output end I/O output low level signal of main control chip U1, audion Q1 ends,
Control relay K 1 to disconnect, cut off the second road power supply VCC2 and supply frequency conversion plate circuit 400.
In an embodiment of the present invention, feedback unit 104 can only feed back the information of first via power supply VCC1 to control
Unit 105 processed, it is possible to only feed back the information of the second road power supply VCC2 to control unit 105, or electricity that the first via is powered
The information of source VCC1 and the information of the second road power supply VCC2 all feed back to control unit 105, and control unit 105 is according to reception
To feedback information control transformer unit 103 and be modulated, thus regulate the first power output unit 101 and second source
The output of output unit 102.
Wherein, as in figure 2 it is shown, when the voltage of first via power supply VCC1 is fed back by feedback unit 104, feedback
Unit 104 includes: the 3rd resistance R3, frequency compensation capacitance C7, the 4th resistance R4, reference power supply chip U4, soft start capacitor C6.
One end of 3rd resistance R3 is connected with first via power supply VCC1, and one end of frequency compensation capacitance C7 is another with the 3rd resistance R3's
One end is connected, and the other end of frequency compensation capacitance C7 is connected with control unit 105, one end of the 4th resistance R4 and the 3rd resistance R3
The other end be connected, the other end of the 4th resistance R4 and first with reference to ground GND1 be connected, first end of reference power supply chip U4 with
The other end of frequency compensation capacitance C7 is connected, and second end of reference power supply chip U4 and first is connected with reference to ground GND1, benchmark electricity
3rd end of source chip U4 respectively with the other end, one end of the 4th resistance R4 and the one of frequency compensation capacitance C7 of the 3rd resistance R3
End is connected, the positive terminal of soft start capacitor C6 respectively with another of first end of reference power supply chip U4 and frequency compensation capacitance C7
End is connected, and the negative pole end of soft start capacitor C6 and first is connected with reference to ground GND.
It is to say, feedback unit 104 can be by reference power supply chip U4, feedback divider resistance R3, the 4th resistance R4, frequency
Compensating electric capacity C7, soft start capacitor C6 composition, wherein, reference power supply chip U4 can be selected for TL431, feeds back divider resistance R3, electricity
Resistance R4 must select high-precision resistance, and required precision is less than 1%, and the big I of resistance is adjustable according to power supply output, frequency compensation
In loop, resistance capacitance all adjustable, it is possible to cancel according to concrete applicable cases or retain resistance capacitance, it is used for ensureing TL431
Phase gain reliable, soft start capacitor C6 can require to adjust its parameter or additions and deletions unit device according to the soft start that side circuit needs
Part.It is understood that in an embodiment of the present invention, feedback unit 104 is not limited to the circuit design shown in Fig. 2.
Further, as in figure 2 it is shown, control unit 105 include switching power source chip U3, feedback diode D3, the 5th electric capacity C5,
Optocoupler PC1, the 5th resistance R5 and the 6th resistance R6.At the beginning of the modulation outfan D of switching power source chip U3 and transformer unit 103
Level winding is connected, and the anode of feedback diode D3 is connected with the third time level winding of transformer unit 103, the one of the 5th electric capacity C5
End is connected with the negative electrode of feedback diode D3, the other end of the 5th electric capacity C5 and second connected with reference to ground GND2, the of optocoupler PC1
One end is connected with the feedback end C of switching power source chip U3, second end of optocoupler PC1 respectively with one end and the feedback of the 5th electric capacity C1
The negative electrode of diode D3 is connected, and the 3rd end of optocoupler PC1 is connected by the 5th resistance R5 and the first power output unit 101, light
4th end of coupling PC1 is connected with the other end of frequency compensation capacitance C7, and connecting between the 3rd end and the 4th end of optocoupler PC1 has the
Six resistance R6.
It is to say, control unit 105 is by switching power source chip U3, the diode D3 of feedback output, electric capacity C5, optocoupler
The resistance R5 of PC1 and peripheral circuit thereof, resistance R6 form, and wherein, switching power source chip U3 can be selected for TOP243Y and matched
Absorption circuit, but be not limited to this circuit design, the light emitting diode of optocoupler PC1 is connected with feedback unit 104, photosensitive three
The colelctor electrode of pole pipe is connected with the output of third time level winding, the emitter stage of phototriode and the feedback of switching power source chip U3
Port C is connected, and wherein, the resistance size according to the resistance R5 of actually used peripheral circuit, resistance R6 is adjustable.
Specifically, according to one embodiment of present invention, as in figure 2 it is shown, the first power output unit 101 includes: first
Diode D1, the first inductance L1, the first electric capacity C1 and the 3rd electric capacity C3.The anode of the first diode D1 and transformer unit 103
The first secondary windings be connected, one end of the first inductance L1 is connected with negative electrode and the 5th resistance R5 of the first diode D1 respectively,
The other end of the first inductance L1 and one end of the 3rd resistance R3 are connected, another of the positive terminal of the first electric capacity C1 and the first inductance L1
End is connected, and the negative pole end of the first electric capacity C1 and first is connected with reference to ground GND1, and the positive terminal of the first electric capacity C1 is as the first power supply
The outfan of output unit 101, output first via power supply VCC1, the 3rd electric capacity C3 and the first electric capacity C1 are in parallel.
Further, as in figure 2 it is shown, second source output unit 102 includes: the second diode D2, the second electric capacity C2 and the 4th
Electric capacity C4, the anode of the second diode D2 is connected with the second subprime winding of transformer unit 103, the positive terminal of the second electric capacity C2
Being connected with the negative electrode of the second diode D2, the negative pole end of the second electric capacity C2 and second is connected with reference to ground GND2, the second electric capacity C2's
Positive terminal, as the outfan of second source output unit 102, exports the second road power supply by control relay circuit
VCC2, the 4th electric capacity C4 and the second electric capacity C2 are in parallel.
It is to say, two-way insulating power supply output circuit Zhong mono-tunnel be diode D1, inductance L1, electric capacity C1 and electric capacity C3
First power output unit 101 of composition, this road power supply can feed back to control unit 105, output supply voltage as primary feedback
For VCC1, being the earth with reference to ground, for safely, i.e. first with reference to ground GND1, and in practical situation, VCC1 can be typically 12V, supplies
Be given on master control borad circuit 200 circuit such as fan drive circuit, air door drive circuit use, VCC1 can through Voltage stabilizing module or
DC-DC power source circuit obtains power supply VCC1 ', and in practical situation, VCC1 ' is generally 5V, is supplied to main control chip U1 and uses.Two-way
Another road in insulating power supply output circuit is diode D2, the second source output unit 102 of electric capacity C2 and electric capacity C4 composition,
Output supply voltage is VCC2, with reference to ground for after rectification thermally, for unsafe floating, i.e. second with reference to ground GND2, actual
In situation, VCC2 may generally be 15V, is supplied to driving chip or IPM on frequency conversion plate circuit 400 and uses, and VCC2 can be through voltage stabilizing
Module or DC-DC power source circuit obtain power supply VCC2 ', and in practical situation, VCC2 ' is generally 5V or 3.3V, are supplied to drive control
Coremaking sheet U2, discharge circuit and signal receiving circuit etc. use.
In an embodiment of the present invention, frequency conversion plate circuit 400 and master control borad circuit 200 can integrate design, thus can
Simplify assembly technology, be substantially reduced cost, and by the low power consumpting controling circuit of the embodiment of the present invention, it is possible to it is substantially reduced and treats
Power consumption during machine, it is to avoid energy waste.
The low power consumpting controling circuit for frequency conversion refrigeration plant according to embodiments of the present invention, switching power circuit is by the
One power output unit output first via power supply is supply master control borad circuit, and exports the by second source output unit
Two-way power supply power supply is to supply frequency conversion plate circuit, thus the master control borad of frequency conversion refrigeration plant and frequency conversion plate share a set of Switching Power Supply
Circuit, so when frequency conversion refrigeration plant is without refrigeration demand, frequency conversion plate circuit gets final product out of service and enters holding state, i.e. becomes
Frequently, when refrigeration plant is in holding state, master control borad circuit controls gate-controlled switch circuit and is off, to cut off frequency conversion plate
The supply access of circuit, it is achieved the purpose of frequency conversion plate circuit zero-power in the standby state, greatly reduces frequency conversion refrigeration plant
Power consumption time standby, it is to avoid energy waste, energy-conserving and environment-protective.
Additionally, the embodiment of the present invention also proposed a kind of frequency conversion refrigeration plant, it includes above-mentioned setting for frequency conversion refrigeration
Standby low power consumpting controling circuit.
The frequency conversion refrigeration plant of the embodiment of the present invention, by above-mentioned low power consumpting controling circuit, it is possible to be substantially reduced standby
Time power consumption, it is to avoid energy waste, energy-conserving and environment-protective.
In describing the invention, it is to be understood that term " " center ", " longitudinally ", " laterally ", " length ", " width ",
" thickness ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ", " outward ", " up time
Pin ", " counterclockwise ", " axially ", " radially ", the orientation of the instruction such as " circumferential " or position relationship be based on orientation shown in the drawings or
Position relationship, is for only for ease of the description present invention and simplifies description rather than instruction or imply that the device of indication or element must
Must have specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In describing the invention, " multiple " are meant that at least two, such as two, three
Individual etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ", " fixing " etc.
Term should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be that machinery connects
Connect, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, in can being two elements
The connection in portion or the interaction relationship of two elements, unless otherwise clear and definite restriction.For those of ordinary skill in the art
For, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score permissible
It is that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height less than second feature.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or spy
Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be in office
One or more embodiments or example combine in an appropriate manner.Additionally, in the case of the most conflicting, the skill of this area
The feature of the different embodiments described in this specification or example and different embodiment or example can be tied by art personnel
Close and combination.
Although above it has been shown and described that embodiments of the invention, it is to be understood that above-described embodiment is example
Property, it is impossible to being interpreted as limitation of the present invention, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, revises, replaces and modification.
Claims (10)
1. the low power consumpting controling circuit for frequency conversion refrigeration plant, it is characterised in that include switching power circuit, controlled open
Pass circuit, frequency conversion plate circuit and master control borad circuit, wherein,
Described switching power circuit includes the first power output unit and second source output unit, and described switching power circuit leads to
Cross described first power output unit output first via power supply to supply described master control borad circuit and electric by described second
Source output unit exports the second road power supply to supply described frequency conversion plate circuit；
Described first power output unit is connected with described master control borad circuit, and described second source output unit is by described controlled
On-off circuit is connected with described frequency conversion plate circuit, and described master control borad circuit is for controlling the disconnection of described gate-controlled switch circuit or closing
Close, wherein,
When described frequency conversion refrigeration plant is in holding state, described master control borad circuit controls described gate-controlled switch circuit and is in disconnected
Open state, to cut off the supply access of described frequency conversion plate circuit.
2. the low power consumpting controling circuit for frequency conversion refrigeration plant as claimed in claim 1, it is characterised in that described switch electricity
Source circuit uses reverse excitation circuit design, and wherein, described switching power circuit farther includes:
Transformer unit, described transformer unit is for exporting the second unidirectional current and the 3rd direct current according to the first unidirectional current of input
Electricity, wherein, described first power output unit is for exporting described first via power supply according to described second unidirectional current, described
Second source output unit is for exporting described second road power supply according to described 3rd unidirectional current；
Feedback unit, described feedback unit is for the voltage of described first via power supply and/or the second road power supply
Voltage carries out feeding back with output voltage feedback information；
Control unit, described control unit is for generating modulated signal according to described voltage feedback information, with to described first straight
Stream electricity is modulated, so that described transformer unit exports described second unidirectional current and the 3rd unidirectional current.
3. the low power consumpting controling circuit for frequency conversion refrigeration plant as claimed in claim 1 or 2, it is characterised in that described can
Control on-off circuit is control relay circuit, and described control relay circuit includes:
First resistance, one end of described first resistance is connected with the control output end of the main control chip in described master control borad circuit；
First audion, the base stage of described first audion is connected with the other end of described first resistance, described first audion
Emitter stage connect first with reference to ground；
Second resistance, described second resistance is connected to the base stage and described first of described first audion with reference between ground；
Relay, one end of described relay coil is connected with the colelctor electrode of described first audion, described relay coil
The other end is connected with described first via power supply, one end of described relay switch and described second source output unit phase
Even, the other end of described relay switch is connected with described frequency conversion plate circuit；
Protection diode, the anode of described protection diode is connected with one end of described relay coil, described protection diode
Negative electrode be connected with the other end of described relay coil.
4. the low power consumpting controling circuit for frequency conversion refrigeration plant as claimed in claim 2, it is characterised in that when described feedback
When the voltage of described first via power supply is fed back by unit, described feedback unit includes:
3rd resistance, one end of described 3rd resistance is connected with described first via power supply；
Frequency compensation capacitance, one end of described frequency compensation capacitance is connected with the other end of described 3rd resistance, and described frequency is mended
The other end repaying electric capacity is connected with described control unit；
4th resistance, one end of described 4th resistance is connected with the other end of described 3rd resistance, another of described 4th resistance
Hold with described first with reference to be connected；
Reference power supply chip, the first end of described reference power supply chip is connected with the other end of described frequency compensation capacitance, described
Second end of reference power supply chip with described first with reference to be connected, the 3rd end of described reference power supply chip is respectively with described the
The other end of three resistance, described one end of 4th resistance are connected with one end of described frequency compensation capacitance；
Soft start capacitor, the positive terminal of described soft start capacitor respectively with the first end and the described frequency of described reference power supply chip
Compensate electric capacity the other end be connected, the negative pole end of described soft start capacitor with described first with reference to be connected.
5. the low power consumpting controling circuit for frequency conversion refrigeration plant as claimed in claim 4, it is characterised in that described control list
Unit includes:
Switching power source chip, the modulation outfan of described switching power source chip is connected with the armature winding of described transformer unit；
Feedback diode, the anode of described feedback diode is connected with the third time level winding of described transformer unit；
5th electric capacity, described one end of 5th electric capacity is connected with the negative electrode of described feedback diode, another of described 5th electric capacity
Hold with second with reference to be connected；
Optocoupler, the first end of described optocoupler is connected with the feedback end of described switching power source chip, and the second end of described optocoupler is respectively
Be connected with described one end of 5th electric capacity and the negative electrode of described feedback diode, the 3rd end of described optocoupler by the 5th resistance with
Described first power output unit is connected, and the 4th end of described optocoupler is connected with the other end of described frequency compensation capacitance, described
Connect between 3rd end and the 4th end of optocoupler and have the 6th resistance.
6. the low power consumpting controling circuit for frequency conversion refrigeration plant as claimed in claim 5, it is characterised in that described first electricity
Source output unit includes:
First diode, the anode of described first diode is connected with the first secondary windings of described transformer unit；
First inductance, one end of described first inductance is connected with the negative electrode of described first diode and described 5th resistance respectively,
The other end of described first inductance is connected with one end of described 3rd resistance；
First electric capacity, the positive terminal of described first electric capacity is connected with the other end of described first inductance, bearing of described first electric capacity
Being connected to extreme and described first reference, the positive terminal of described first electric capacity is as the output of described first power output unit
End；
3rd electric capacity, described 3rd electric capacity is in parallel with described first electric capacity.
7. the low power consumpting controling circuit for frequency conversion refrigeration plant as claimed in claim 3, it is characterised in that described second electricity
Source output unit includes:
Second diode, the anode of described second diode is connected with the second subprime winding of described transformer unit；
Second electric capacity, the positive terminal of described second electric capacity is connected with the negative electrode of described second diode, bearing of described second electric capacity
Extremely with second with reference to be connected, the positive terminal of described second electric capacity is as the outfan of described second source output unit；
4th electric capacity, described 4th electric capacity is in parallel with described second electric capacity.
8. the low power consumpting controling circuit for frequency conversion refrigeration plant as according to any one of claim 1-7, it is characterised in that
Described frequency conversion refrigeration plant is frequency conversion household refrigerator-freezer.
9. the low power consumpting controling circuit for frequency conversion refrigeration plant as according to any one of claim 1-7, it is characterised in that
Described frequency conversion plate circuit and described master control borad circuit integrate design.
10. a frequency conversion refrigeration plant, it is characterised in that include as claimed in any one of claims 1-9 wherein for frequency conversion system
The low power consumpting controling circuit of cool equipment.
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| CN201611069706.9A CN106329890B (en) | 2016-11-28 | 2016-11-28 | Frequency conversion refrigeration equipment and low power consumpting controling circuit for frequency conversion refrigeration equipment |
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| CN201611069706.9A CN106329890B (en) | 2016-11-28 | 2016-11-28 | Frequency conversion refrigeration equipment and low power consumpting controling circuit for frequency conversion refrigeration equipment |
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| CN106766664A (en) * | 2017-01-20 | 2017-05-31 | 美的集团股份有限公司 | The reducing power consumption control method and device of the VFC plate of refrigerator and its compressor |
| CN108302895A (en) * | 2018-01-08 | 2018-07-20 | 合肥华凌股份有限公司 | The energy-saving control method and refrigerator of refrigerator |
| CN108594675A (en) * | 2018-03-26 | 2018-09-28 | 青岛海尔智能技术研发有限公司 | A kind of method, apparatus and computer readable storage medium of driving plate control |
| CN108873779A (en) * | 2018-07-03 | 2018-11-23 | 珠海格力电器股份有限公司 | Standby driving plate, system, method, variable frequency drives and smart machine |
| CN110360703A (en) * | 2018-04-09 | 2019-10-22 | 珠海格力电器股份有限公司 | A kind of method for handover control of air-conditioning, device, storage medium and air-conditioning |
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