CN106026850A - Power supply circuit and control method thereof and air conditioner - Google Patents
Power supply circuit and control method thereof and air conditioner Download PDFInfo
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- CN106026850A CN106026850A CN201610463926.3A CN201610463926A CN106026850A CN 106026850 A CN106026850 A CN 106026850A CN 201610463926 A CN201610463926 A CN 201610463926A CN 106026850 A CN106026850 A CN 106026850A
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- motor
- circuit
- network source
- power supply
- electric network
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
Abstract
The invention provides a power supply circuit and a control method thereof and an air conditioner, relates to the technical field of air conditioners and aims at avoiding the damage to the power supply circuit caused by heat generated by the power supply circuit, thereby ensuring normal working of the air conditioner. The power supply circuit comprises a rectifier circuit, an inverter circuit, a control circuit, a first switch unit and a second switch unit, wherein the first switch unit is used for connecting or disconnecting the inverter circuit and a motor; the second switch unit is used for connecting or disconnecting a network source and the motor; when the inverter circuit is connected with the motor and the network source is disconnected with the motor, the rectifier circuit converts AC output by the network source into DC and the inverter circuit inverts the DC into the AC under the control of the control circuit and supplies the motor with working power; and when the inverter circuit is disconnected with the motor and the network source is connected with the motor, the network source supplies the motor with the working power. The power supply circuit is used for manufacturing the air conditioner.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly relate to a kind of power supply circuits and control method thereof
And air-conditioning.
Background technology
Indoor environment is one of most important environment of people, and air-conditioning can change indoor ring effectively
The temperature and humidity in border, therefore, air-conditioning is widely adopted in regulation indoor environment.
With reference to shown in Fig. 1, Fig. 1 is the power supply circuits of traditional frequency conversion air-conditioning.Traditional frequency conversion air-conditioning
Power supply circuits include: rectification circuit 11, inverter circuit 12 and single chip machine controlling circuit 13.
Wherein, rectification circuit 11 connects electric network source 13 and inverter circuit 12, for by electrical network electricity
The alternating current of source output is converted to unidirectional current, and by DC supply input inverter circuit 12, inversion
Circuit 12 connects single chip machine controlling circuit 13 and motor 15, at Single-chip Controlling electricity
By alternating current that DC inverter is characteristic frequency and by the friendship of characteristic frequency under the control on road 13
Stream electric drive motor 15.Wherein, single chip machine controlling circuit 13 is specifically for controlling inverter circuit
The frequency size of 12 output AC electricity, thus control the output of motor 15.By above-mentioned biography
The work process of the power supply circuits of system convertible frequency air-conditioner understands, air-conditioning power supply circuits in the course of the work
In rectification circuit 11, inverter circuit 12 and single chip machine controlling circuit 13 have to last for work,
Therefore when air-conditioning work, power supply circuits can produce amount of heat, and then may damage power supply electricity
Road, affects air-conditioning and normally works, when especially air-conditioning runs in hot environment, and power supply circuits
Produce heat be difficult to Rapid radiating to the external world, more likely can damage power supply circuits.To sum up, as
What avoid power supply circuits produce heat to the damage of power supply circuits be art technology technical staff urgently
Technical problem to be solved.
Summary of the invention
Embodiments of the invention provide a kind of power supply circuits and control method thereof and air-conditioning, are used for keeping away
Exempt from power supply circuits and produce the heat damage to power supply circuits, and then ensure the normal work of air-conditioning.
For reaching above-mentioned purpose, embodiments of the invention adopt the following technical scheme that
First aspect, it is provided that a kind of power supply circuits, including: rectification circuit, inverter circuit, control
Circuit processed, the first switch element and second switch unit；
Described first switch element connects described control circuit, described inverter circuit and motor,
For making described inverter circuit and described motor lead on-off under the control of described control circuit
Open；
Described second switch unit connects described control circuit, electric network source and described motor,
For making described electric network source and described motor lead on-off under the control of described control circuit
Open；
Described rectification circuit connects described electric network source and inverter circuit, and described inverter circuit is even
Connect described control circuit, when described inverter circuit and the conducting of described motor and described electric network source
When disconnecting with described motor, described rectification circuit is for the exchange exported by described electric network source
Electricity is converted to unidirectional current, and described inverter circuit is used for described under the control of described control circuit
DC inverter for alternating current and by described first switch element to described motor offer work
Electric energy；
When described inverter circuit and described motor disconnect and described electric network source and described motor
During conducting, described electric network source by described second switch unit to described motor offer work
Electric energy.
Second aspect, it is provided that a kind of power supply circuits driving method, is used for driving first aspect arbitrary
Power supply circuits described in Xiang, described method includes:
Control circuit controls the first switch element makes inverter circuit and motor conducting and control second
Switch element makes electric network source disconnect with described motor；
The alternating current that described electric network source exports is converted to unidirectional current by rectification circuit；
The unidirectional current that described rectification circuit is exported under the control of described control circuit by inverter circuit
Inversion provides work energy for alternating current and by described first switch element to described motor；
When the frequency of described inverter circuit output to the alternating current of described motor is predeterminated frequency
Time, control circuit controls the first switch element makes inverter circuit disconnect with motor and control second
Switch element makes electric network source turn on described motor, and described electric network source passes through described second
Switch element provides work energy to described motor.
The third aspect, it is provided that a kind of air-conditioning, including the power supply circuits described in first aspect.
The power supply circuits that the embodiment of the present invention provides include: rectification circuit, inverter circuit, control
Circuit, the first switch element and second switch unit；Wherein, the first switch element connects control
Circuit processed, inverter circuit and motor, can make inverter circuit under the control of control circuit
Being turned on or off with motor, second switch unit connects control circuit, electric network source and electricity
Motivation, can make electric network source be turned on or off with motor under the control of control circuit；And
When inverter circuit disconnects with motor with motor conducting and electric network source, rectification circuit is by electricity
The alternating current of network source output is converted to unidirectional current, and inverter circuit will under the control of control circuit
DC inverter provides work energy for alternating current and by the first switch element to motor,
When inverter circuit and motor disconnect and electric network source turns on motor, electric network source is by the
Two switch elements provide work energy to motor, because the power supply electricity that the embodiment of the present invention provides
It is single that road can pass through rectification circuit, inverter circuit and the first switch under the control of control circuit
The Zhi Luxiang motor that unit is formed provides electric energy or opens, by second, the branch road that switch element is formed
To motor provide electric energy, compared to prior art embodiment can rectification circuit,
The branch road that switch element is formed opened by the branch road and second that inverter circuit and the first switch element are formed
Between switch to motor energy, so the embodiment of the present invention can avoid the one of power supply circuits
Individual branch road continuous firing, and then avoid producing heat damages power supply circuits, so the present invention implements
The power supply circuits that example provides can ensure that the normal work of air-conditioning.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to reality
Execute the required accompanying drawing used in example or description of the prior art to be briefly described, it should be apparent that below,
Accompanying drawing in description is only some embodiments of the present invention, for those of ordinary skill in the art,
On the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the schematic diagram of power supply circuits of the prior art；
One of schematic diagram of power supply circuits that Fig. 2 provides for the embodiment of the present invention；
The two of the schematic diagram of the power supply circuits that Fig. 3 provides for the embodiment of the present invention；
The three of the schematic diagram of the power supply circuits that Fig. 4 provides for the embodiment of the present invention；
The flow chart of steps of the driving method of the power supply circuits that Fig. 5 provides for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present invention, and
It is not all, of embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
Go out the every other embodiment obtained under creative work premise, broadly fall into the scope of protection of the invention.
It should be noted that for the ease of the technical scheme clearly describing the embodiment of the present invention,
In embodiments of the invention, have employed the printed words such as " first ", " second " to function and effect
Essentially identical identical entry or similar item make a distinction, it will be appreciated by those skilled in the art that " the
One ", the printed words such as " second " are not to be defined quantity and execution order.
Embodiments of the invention provide a kind of power supply circuits, concrete, with reference to shown in Fig. 2, are somebody's turn to do
Power supply circuits include: rectification circuit 21, inverter circuit 22, control circuit 23, first switch single
Unit 24 and second switch unit 25.
Wherein, the first switch element 24 connects control circuit 23, inverter circuit 22 and electronic
Machine M, for making inverter circuit 22 and motor M lead on-off under the control of control circuit 23
Open.
Second switch unit 25 connects control circuit 23, electric network source AC and motor M,
For making electric network source AC be turned on or off with motor M under the control of control circuit 23.
Rectification circuit 21 connects electric network source AC and inverter circuit 22, and inverter circuit 22 connects
Control circuit 23, when inverter circuit 22 and motor M conducting and electric network source AC and motor
When M disconnects, rectification circuit 21 alternating current being used for electric network source AC exports is converted to unidirectional current,
Inverter circuit 22 is for being alternating current by DC inverter and passing through the under the control of control circuit
One switch element 24 provides work energy to motor M.
That is, the rectification circuit of the embodiment of the present invention is for can be converted to direct current energy by AC energy
Circuit.Exemplary, rectification circuit can be by transformator, rectification main circuit and wave filter etc.
Composition.Rectification circuit in the embodiment of the present invention can be identical with existing rectification circuit, this
The structure of rectification circuit is not construed as limiting by bright embodiment, with the exchange that can be exported by electric network source
Electric energy is converted to direct current energy and is as the criterion.The function that inverter circuit is realized is realized with rectification circuit
Function inverse process each other, i.e. inverter circuit is direct current energy to be converted to AC energy
Circuit.Inverter circuit in the same embodiment of the present invention can be identical with existing inverter circuit,
The structure of inverter circuit is also not construed as limiting by the embodiment of the present invention, being exported by rectification circuit
Direct current energy be converted to the AC energy of characteristic frequency and be as the criterion.
When inverter circuit 22 turns on motor M disconnection and electric network source AC and motor M,
Electric network source AC provides work energy by second switch unit 25 to motor M.
Furthermore, it is necessary to explanation, above-described embodiment is positioned at inversion with the first switch element 24
Between circuit 22 and motor M, the embodiment of the present invention is illustrated, at the base of above-described embodiment
On plinth, those skilled in the art are also conceivable and the first switch element 24 are arranged on rectification circuit
21, other positions of the formed branch road of inverter circuit 22, such as: by the first switch element 24
It is arranged between electric network source AC and rectification circuit 21 or the first switch element 24 is arranged on
Between rectification circuit 21 and inverter circuit, but this belongs to the rationally side of replacement of the embodiment of the present invention
Case, the most all should contain within protection scope of the present invention.
The power supply circuits that the embodiment of the present invention provides include: rectification circuit, inverter circuit, control
Circuit, the first switch element and second switch unit；Wherein, the first switch element connects control
Circuit processed, inverter circuit and motor, can make inverter circuit under the control of control circuit
Being turned on or off with motor, second switch unit connects control circuit, electric network source and electricity
Motivation, can make electric network source be turned on or off with motor under the control of control circuit；And
When inverter circuit disconnects with motor with motor conducting and electric network source, rectification circuit is by electricity
The alternating current of network source output is converted to unidirectional current, and inverter circuit will under the control of control circuit
DC inverter provides work energy for alternating current and by the first switch element to motor,
When inverter circuit and motor disconnect and electric network source turns on motor, electric network source is by the
Two switch elements provide work energy to motor, because the power supply electricity that the embodiment of the present invention provides
It is single that road can pass through rectification circuit, inverter circuit and the first switch under the control of control circuit
The Zhi Luxiang motor that unit is formed provides electric energy or opens, by second, the branch road that switch element is formed
To motor provide electric energy, compared to prior art embodiment can rectification circuit,
The branch road that switch element is formed opened by the branch road and second that inverter circuit and the first switch element are formed
Between switch to motor energy, so the embodiment of the present invention can avoid the one of power supply circuits
Individual branch road continuous firing, and then avoid producing heat damages power supply circuits, so the present invention implements
The power supply circuits that example provides can ensure that the normal work of air-conditioning.
Optionally, control circuit 23 is for the frequency etc. of the alternating current in inverter circuit 22 output
Control when predeterminated frequency the first switch element 24 make inverter circuit 22 disconnect with motor M and
Controlling second switch unit 25 makes electric network source AC and motor M turn on.
It should be noted that the predeterminated frequency of the embodiment of the present invention can be a frequency values, example
Such as 50ZH or 60HZ, it is also possible to be frequency band such as: more than 50ZH and less than 60HZ.
Predeterminated frequency value can be entered by those skilled in the art according to the frequency of electric network source output AC electricity
Row sets.Wherein, if the frequency values of predeterminated frequency value and electric network source output AC electricity closer to,
Then by inverter circuit 22 to motor M provide work energy excessively to electric network source AC to electronic
The process of machine M offer work energy is the most smooth, and the operation of motor is the most stable.Therefore, when in advance
If frequency values is a frequency values, the most preferably, predeterminated frequency value is the friendship of electric network source output
The frequency values of stream electricity, now, inverter circuit 22 provides work energy excessively to electricity to motor M
Network source AC provides the process of work energy to change without frequency to motor M, and motor M runs
The most stable.Additionally, when the frequency values of the alternating current that predeterminated frequency value is electric network source output
Control circuit controls the first switch element 24 makes inverter circuit 22 disconnect with motor M and control
Second switch unit 25 makes electric network source AC and motor M turn on, then by rectification circuit 21,
The work that the Zhi Luxiang motor M that inverter circuit 22 and the first switch element 24 are formed provides
The work energy that electric energy directly provides to motor M with electric network source AC is identical, and passes through
The work energy that electric network source AC directly provides to motor M needs not move through rectification circuit 21, inverse
Power transformation road 22 constant power device, therefore can avoid electric energy through rectification circuit 21, inverter circuit
Loss during 22 constant power device, so the embodiment of the present invention also can be also to reduce power supply circuits
Loss.Further, electric network source usual output AC electricity frequency be usually 50HZ or
60HZ, accordingly, it is preferred that predeterminated frequency is also 50HZ or 60HZ.
Although also, it should be noted the frequency of the alternating current that predeterminated frequency value is electric network source output
During rate value, the operation of motor M is the most stable and can reduce the loss of power supply circuits, but is supplying
Rectification circuit 21, inverter circuit 22 and the first switch element 24 shape in electricity circuit power supply process
The branch road working time become is longer, and therefore those skilled in the art are considering the factors such as ambient temperature
In the case of predeterminated frequency can also be set as with the frequency of electric network source output AC electricity be
The frequency band of heart point.Such as: predeterminated frequency is the frequency plus-minus 5HZ of electric network source output AC electricity.
Optionally, with reference to shown in Fig. 3, the alternating current of electric network source AC output is three-phase alternating current；
First switch element 24 and second switch unit 25 include three switches respectively, and the first switch is single
Three switches (a, b, c) of unit 24 lay respectively at the connection of inverter circuit 22 and motor M
On circuit, the second three switches (d, e, f) closing unit 25 lay respectively at electric network source AC
With on the connection line of motor M.
When the alternating current of electric network source AC output is three-phase alternating current, motor M is three-phase electricity
Motivation, by three of the wires transmission electric energy and electric network source between inverter circuit 22 and motor M
Electric energy, three of the first switch element 24 are transmitted also by three of the wires between AC and motor M
Switch (a, b, c) leading the three of the wires between inverter circuit 22 and motor M respectively
On and off is opened and is controlled, and three switches (d, e, f) of second switch unit 25 are the most right
Conducting and the disconnection of the three of the wires between electric network source AC and motor M are controlled.Additionally,
Switch in above-mentioned switch element can be that any electron electric power by or off function is opened
Closing, in the embodiment of the present invention, the particular type to the switch in switch element does not limits.
Optionally, with reference to shown in Fig. 4, the alternating current of electric network source AC output is single-phase alternating current；
First switch element 24 and second switch unit 25 include two switches respectively, and the first switch is single
Three switches (a, b) of unit 24 lay respectively at the connecting line of inverter circuit 22 and motor M
Lu Shang, the second two switches (c, d) closing unit 25 lay respectively at electric network source AC and electricity
On the connection line of motivation M.
When the alternating current of electric network source AC output is single-phase alternating current, motor M is single-phase electricity
Motivation, by two wire transmission electric energy and electric network source between inverter circuit 22 and motor M
Also by two wire transmission electric energy between AC and motor M, two of the first switch element 24
Switch (a, b) respectively to the conducting of two wires between inverter circuit 22 and motor M and
Disconnection is controlled, and two switches (c, d) of second switch unit 25 are respectively to electric network source
Conducting and the disconnection of two wires between AC and motor M are controlled.Equally, above-mentioned open
Closing the switch in unit can be that any electron electric power by or off function switchs, this
In inventive embodiments, the particular type to the switch in switch element does not limits.
Optionally, the control circuit in any of the above-described embodiment is single chip machine controlling circuit.I.e. go up
State the control circuit in embodiment to be realized by single chip machine controlling circuit.Pass through single-chip microcomputer
Control circuit realizes control circuit and can reduce the volume of control circuit, lower the merit of control circuit
Consumption and the stability of raising control circuit.
Further alternative, the motor in any of the above-described embodiment is permasyn morot.
Permasyn morot generally includes: stator, permanent-magnet steel rotor, position sensor, electronics
The parts such as reversing switch.Its work characteristics is: the rotating speed phase of rotor speed and stator rotating excitation field
With.Can be by regulating the defeated of exciting current adjustment motor by use permasyn morot
Go out power, and then reach energy-conservation purpose.
Yet another embodiment of the invention provides the driving method of a kind of power supply circuits, these power supply circuits
The power supply circuits that driving method provides for driving any of the above-described embodiment.Shown in reference Fig. 5,
The method includes:
S51, when power supply circuits start, control circuit controls the first switch element makes inverter circuit
Electric network source is made to disconnect with motor with motor conducting and control second switch unit.
The alternating current that electric network source exports is converted to unidirectional current by S52, rectification circuit.
The DC inverter that rectification circuit is exported under the control of control circuit by S53, inverter circuit
Work energy is provided to motor for alternating current and by the first switch element；
S54, when inverter circuit to motor provide work energy frequency be predeterminated frequency time, control
Circuit processed controls the first switch element makes inverter circuit disconnect with motor and control second switch list
Unit makes electric network source turn on motor, and electric network source is carried to motor by second switch unit
For work energy.
The driving method of the power supply circuits that the embodiment of the present invention provides is first when power supply circuits Qidong
Control circuit controls the first switch element makes inverter circuit and motor conducting and control second switch
Unit makes electric network source disconnect with motor, the exchange that then electric network source is exported by rectification circuit
Electricity is converted to unidirectional current, and it is straight that rectification circuit is exported under the control of control circuit by inverter circuit
Stream electricity inversion provides work energy to motor, when inverse for alternating current and by the first switch element
Power transformation road direction motor provides the frequency of work energy when being predeterminated frequency, control circuit to control the
One switch element makes inverter circuit disconnect with motor and controls second switch unit to make electric network source
Turning on motor, electric network source provides work energy by second switch unit to motor,
So the driving method of the power supply circuits of embodiment of the present invention offer can make power supply circuits in rectification
The branch road and second that circuit, inverter circuit and the first switch element are formed is opened switch element and is formed
Branch road between switch to motor energy, so the embodiment of the present invention can avoid power supply electricity
One branch road continuous firing on road, and then avoid producing heat damages power supply circuits, so this
The power supply circuits that bright embodiment provides can ensure that the normal work of air-conditioning.
Yet another embodiment of the invention provides a kind of air-conditioning, and this air-conditioning includes that any of the above-described embodiment carries
The power supply circuits of confession.
Air-conditioning in the embodiment of the present invention can be small-sized household air-conditioning, i.e. one-to-one；All right
Multi-online air-conditioning system, i.e. one drag many.One-to-one refers to an off-premises station by pipe arrangement even
Connect the air conditioning system of an indoor set；One drag refer to more an off-premises station by pipe arrangement connect two
The air conditioning system of more than platform (i.e. at least two) indoor set.No matter for small-sized household air-conditioning,
Or multi-online air-conditioning system all can comprise the power supply circuits that above-described embodiment provides.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is also
Being not limited to this, any those familiar with the art is at the technology model that the invention discloses
In enclosing, the change that can readily occur in or replacement, all should contain within protection scope of the present invention.
Therefore, protection scope of the present invention should be as the criterion with scope of the claims.
Claims (10)
1. power supply circuits, it is characterised in that including: rectification circuit, inverter circuit, control
Circuit processed, the first switch element and second switch unit；
Described first switch element connects described control circuit, described inverter circuit and motor,
For making described inverter circuit and described motor lead on-off under the control of described control circuit
Open；
Described second switch unit connects described control circuit, electric network source and described motor,
For making described electric network source and described motor lead on-off under the control of described control circuit
Open；
Described rectification circuit connects described electric network source and inverter circuit, and described inverter circuit is even
Connect described control circuit, when described inverter circuit and the conducting of described motor and described electric network source
When disconnecting with described motor, described rectification circuit is for the exchange exported by described electric network source
Electricity is converted to unidirectional current, and described inverter circuit is used for described under the control of described control circuit
DC inverter for alternating current and by described first switch element to described motor offer work
Electric energy；
When described inverter circuit and described motor disconnect and described electric network source and described motor
During conducting, described electric network source by described second switch unit to described motor offer work
Electric energy.
Power supply circuits the most according to claim 1, it is characterised in that described control circuit
For the frequency of alternating current that exports at described inverter circuit equal to predeterminated frequency time control described the
One switch element makes described inverter circuit disconnect with described motor and control described second switch list
Unit makes described electric network source turn on described motor.
Power supply circuits the most according to claim 2, it is characterised in that described predeterminated frequency
Frequency for the alternating current that described electric network source exports.
Power supply circuits the most according to claim 3, it is characterised in that described predeterminated frequency
For 50HZ or 60HZ.
Power supply circuits the most according to claim 1, it is characterised in that described electric network source
The alternating current of output is three-phase alternating current；Described first switch element and described second switch unit
Including three switches respectively, three switches of described first switch element lay respectively at described inversion
Circuit is with on the connection line of described motor, and described second closes three switches position respectively of unit
On the described electric network source connection line with described motor.
Power supply circuits the most according to claim 1, it is characterised in that described electric network source
The alternating current of output is single-phase alternating current；Described first switch element and described second switch unit
Including two switches respectively, two switches of described first switch element lay respectively at described electrical network
Power supply is with on the connection line of described rectification circuit, and described second closes two switches of unit respectively
It is positioned on the connection line of described electric network source and described motor.
7. according to the power supply circuits described in any one of claim 1-6, it is characterised in that described
Control circuit is single chip machine controlling circuit.
8. according to the power supply circuits described in any one of claim 1-6, it is characterised in that described
Motor is permasyn morot.
9. a power supply circuits driving method, it is characterised in that be used for driving claim 1-8
Power supply circuits described in any one, described method includes:
When power supply circuits start, control circuit controls the first switch element makes inverter circuit and electricity
Motivation conducting and control second switch unit make electric network source disconnect with described motor；
The alternating current that described electric network source exports is converted to unidirectional current by rectification circuit；
The unidirectional current that described rectification circuit is exported under the control of described control circuit by inverter circuit
Inversion provides work energy for alternating current and by described first switch element to described motor；
When described inverter circuit to described motor provide work energy frequency be predeterminated frequency
Time, control circuit controls the first switch element makes inverter circuit disconnect with motor and control second
Switch element makes electric network source turn on described motor, and described electric network source passes through described second
Switch element provides work energy to described motor.
10. an air-conditioning, it is characterised in that include the confession described in any one of claim 1-8
Electricity circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610463926.3A CN106026850A (en) | 2016-06-22 | 2016-06-22 | Power supply circuit and control method thereof and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610463926.3A CN106026850A (en) | 2016-06-22 | 2016-06-22 | Power supply circuit and control method thereof and air conditioner |
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| CN205249093U (en) * | 2015-12-26 | 2016-05-18 | 四川科技职业学院 | Pole change debugging control panel based on PLC three -phase asynchronous motor |
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Address after: 529000 No. 8 Hisense Avenue, an advanced manufacturing industry in Jiangmen, Guangdong. Applicant after: Hisense (Guangdong) Air Conditioner Co., Ltd. Address before: 528303 12 Ronggui Road East Road, Shunde District, Foshan, Guangdong. Applicant before: Hisense (Guangdong) Air Conditioner Co., Ltd. |
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