CN207301184U - Air-conditioner set and its three-phase phase sequence detection device - Google Patents
Air-conditioner set and its three-phase phase sequence detection device Download PDFInfo
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- CN207301184U CN207301184U CN201721349421.0U CN201721349421U CN207301184U CN 207301184 U CN207301184 U CN 207301184U CN 201721349421 U CN201721349421 U CN 201721349421U CN 207301184 U CN207301184 U CN 207301184U
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Abstract
The utility model discloses a kind of air-conditioner set and its three-phase phase sequence detection device, wherein, three-phase phase sequence detection device includes：Three-phase detection circuit, three-phase detection circuit include first detection unit, second detection unit and the 3rd detection unit；Controllable switch circuit and control chip, the control output end of control chip is connected with the control terminal of controllable switch circuit, wherein, when control chip exports first control signal to control controllable switch circuit turn-on by control output end, the phase sequence of three-phase electricity is detected by three-phase detection circuit；When control chip exports second control signal to control the disconnection of controllable switch circuit by control output end, three-phase detection circuit is stopped.Thereby, it is possible to disconnect three-phase detection circuit when need not carry out Phase sequence detection, the power consumption of air-conditioner set is reduced, while the failure rate of component in three-phase detection circuit can also be reduced, improves the reliability of three-phase phase sequence detection.
Description
Technical field
The utility model is related to air-conditioner field, the three-phase phase sequence detection device of more particularly to a kind of air-conditioner set and
A kind of air-conditioner set.
Background technology
Air-conditioner set is mostly powered by three phase mains, and, it is necessary to three-phase electricity phase when three-phase electricity is powered
Sequence is detected.
At present, when being detected to three-phase phase sequence, more using electric resistance partial pressure, the scheme of light-coupled isolation.Such as Fig. 1 institutes
To show, the A phases of three-phase electricity first pass through diode D151 halfwave rectifier, then by providing voltage after R151, R155 partial pressure to optocoupler,
It is then return on N lines.B phases are same principles with C phases, and one 120 ° of phase can be thus produced in the output terminal of optocoupler
Difference.
However, the resistance used in such scheme is high-power resistance, such as R151, R155, R152, R156, R153, R157
Deng, and these resistance concatenate in circuit always, persistent fever serious situation easily occur, so as to cause the failure of resistance.When
After resistance failure, and diode D151, D152, D153 will be caused to fail.It is thereby possible to air-conditioner set is caused normally to transport
OK, the experience of user is influenced.
Utility model content
The utility model is intended to solve one of technical problem in above-mentioned technology at least to a certain extent.For this reason, this reality
It is a kind of propose air-conditioner set three-phase phase sequence detection device with first new purpose, which can be need not
Carry out disconnecting three-phase detection circuit when Phase sequence detection, reduce the power consumption of air-conditioner set, while three-phase inspection can also be reduced
The failure rate of component in slowdown monitoring circuit, improves the reliability of three-phase phase sequence detection.
Second purpose of the utility model is to propose a kind of air-conditioner set.
To reach above-mentioned purpose, the utility model first aspect embodiment proposes a kind of three-phase phase sequence of air-conditioner set
Detection device, wherein, three-phase phase sequence detection device includes：Three-phase detection circuit, the three-phase detection circuit include the first inspection
Survey unit, second detection unit and the 3rd detection unit, the first end of the first detection unit, the second detection unit
The first end of first end and the 3rd detection unit is connected respectively the A phases, B phases and C phases of three-phase electricity, first inspection
Survey unit second end, the second end of the second detection unit connected together with the second end of the 3rd detection unit with
Form first node；Controllable switch circuit, the first end of the controllable switch circuit is connected with the first node, described controllable
The second end of on-off circuit is connected to the N lines of the three-phase electricity；Control chip, the first input end of the control chip, second
The detection output with the first detection unit, the detection of the second detection unit are defeated respectively for input terminal and the 3rd input terminal
Outlet is connected with the detection output of the 3rd detection unit, the control output end of the control chip and the controllable switch
The control terminal of circuit is connected, wherein, the control chip exports first control signal to control by the control output end
When stating controllable switch circuit turn-on, the phase sequence of the three-phase electricity is detected by the three-phase detection circuit；The control
When chip exports second control signal to control the controllable switch circuit disconnection by the control output end, the three-phase inspection
Slowdown monitoring circuit is stopped.
According to the three-phase phase sequence detection device of the air-conditioner set of the utility model embodiment, when air-conditioner set needs to detect
When three-phase phase sequence, control chip exports first control signal to control controllable switch circuit to lead by control output end
It is logical, and then the phase sequence of three-phase electricity is detected by three-phase detection circuit；When air-conditioner set need not detect three-phase phase sequence
When, control chip exports second control signal to control controllable switch circuit to disconnect by control output end, and then makes three
Phase detecting circuit is stopped.Thus, which can disconnect three-phase detection circuit when need not carry out Phase sequence detection,
The power consumption of air-conditioner set is reduced, while the failure rate of component in three-phase detection circuit can also be reduced, improves three-phase electricity
The reliability of Phase sequence detection.
In addition, can also be had according to the three-phase phase sequence detection device of the above-mentioned air-conditioner set of the utility model following attached
The technical characteristic added：
In some instances, the controllable switch circuit is optocoupler control circuit or control relay circuit.
In some instances, the controllable switch circuit includes：First resistor, one end of the first resistor and the control
The control output end of coremaking piece is connected；Second resistance, one end of the second resistance are connected with the other end of the first resistor,
The other end ground connection of the second resistance；First optocoupler, the first pin of first optocoupler respectively with the first resistor
The other end is connected with one end of the second resistance, the second pin of first optocoupler and the other end phase of the second resistance
Even, the three-prong of first optocoupler is connected with the first node, the 4th pin and the three-phase of first optocoupler
The N lines of electricity are connected.
In some instances, the circuit structure phase of the first detection unit, second detection unit and the 3rd detection unit
Together.
In some instances, the first detection unit includes：Rectifier diode, the anode conduct of the rectifier diode
The first end of the first detection unit；Current-limiting resistance, one end of the current-limiting resistance and the cathode phase of the rectifier diode
Even；Divider resistance, one end of the divider resistance are connected with the other end of the current-limiting resistance, the other end of the divider resistance
Second end as the first detection unit；Second optocoupler, the first pin and the divider resistance of second optocoupler
One end is connected, and the second pin of second optocoupler is connected with the other end of the divider resistance；3rd resistor, the 3rd electricity
One end of resistance is connected with default power supply, and the other end of the 3rd resistor is connected with the three-prong of second optocoupler；4th
Resistance, one end of the 4th resistance respectively with the other end of the 3rd resistor and the three-prong phase of second optocoupler
Even, detection output of the other end of the 4th resistance as the first detection unit；First capacitance, first capacitance
One end be connected with the other end of the 4th resistance, the 4th pin of the other end of first capacitance and second optocoupler
It is grounded after being connected.
In some instances, the current-limiting resistance is high-power resistance.
Further, the utility model proposes a kind of air-conditioner set, it includes the three-phase electricity phase of above-mentioned air-conditioner set
Sequence detection apparatus.
The air-conditioner set of the utility model, can be not using the three-phase phase sequence detection device of above-mentioned air-conditioner set
Need to carry out to disconnect three-phase detection circuit when Phase sequence detection, reduce the power consumption of air-conditioner set, while three can also be reduced
The failure rate of component in phase detecting circuit, improves the reliability of three-phase phase sequence detection.
Brief description of the drawings
Fig. 1 is the circuit topology figure of three-phase phase sequence detection device in correlation technique；
Fig. 2 is the block diagram according to the three-phase phase sequence detection device of the air-conditioner set of the utility model embodiment；
Fig. 3 is the circuit topology according to the three-phase phase sequence detection device of the air-conditioner set of the utility model one embodiment
Figure；
Fig. 4 is the block diagram of the air-conditioner set of the utility model embodiment.
Embodiment
The embodiment of the utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is same or like element.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and it is not intended that to the utility model
Limitation.
Below with reference to the accompanying drawings the air-conditioner set and its three-phase phase sequence detection device of the utility model embodiment are described.
Fig. 2 is the block diagram of the three-phase phase sequence detection device of the air-conditioner set of the utility model embodiment.
As shown in Fig. 2, the three-phase phase sequence detection device 100 of air-conditioner set includes：Three-phase detection circuit 10, controllable switch
Circuit 20 and control chip 30.
Specifically, as shown in figure 3, three-phase detection circuit 10 includes first detection unit 11, second detection unit 12 and the
Three detection units 13, the first end of first detection unit 11, the first end of second detection unit 12 and the 3rd detection unit 13
First end is connected respectively the A phases, B phases and C phases of three-phase electricity, second end, the second detection unit of first detection unit 11
12 second end is connected together with the second end of the 3rd detection unit 13 to form first node P.Controllable switch circuit 20
First end is connected with first node P, and the second end of controllable switch circuit 20 is connected to the N lines of three-phase electricity.The of control chip 30
One input terminal, the second input terminal and the 3rd the input terminal detection output with first detection unit 11, second detection unit respectively
12 detection output is connected with the detection output of the 3rd detection unit 13, and the control output end of control chip 30 is opened with controllable
The control terminal on powered-down road 20 is connected, wherein, control chip 30 is controllable to control by control output end output first control signal
When on-off circuit 20 turns on, the phase sequence of three-phase electricity is detected by three-phase detection circuit 10；Control chip 30 passes through control
When output terminal exports second control signal to control the disconnection of controllable switch circuit 20, three-phase detection circuit 10 is stopped.
The three-phase phase sequence detection device of the air-conditioner set, conducting or the pass of controllable switch circuit are controlled by control chip
Close, to control the working status of three-phase detection circuit, help to reduce the power consumption of air-conditioner set.
In one embodiment of the utility model, as shown in figure 3, first detection unit 11 includes：Rectifier diode
D151, current-limiting resistance R151, divider resistance R155, the second optocoupler IC151,3rd resistor R158, the 4th resistance R1511 and first
Capacitance C151.
Specifically, first end of the anode of reference Fig. 3, rectifier diode D151 as first detection unit 11；Current limliting electricity
One end of resistance R151 is connected with the cathode of rectifier diode D151；One end of divider resistance R155 is another with current-limiting resistance R151's
End is connected, the second end of the other end of divider resistance R155 as first detection unit 11；The first pin of second optocoupler IC151
It is connected with one end of divider resistance R155, the second pin of the second optocoupler IC151 is connected with the other end of divider resistance R155；The
One end of three resistance R158 is connected with default power supply 5V, the 3rd pipe of the other end of 3rd resistor R158 and the second optocoupler IC151
Foot is connected；One end of 4th resistance R1511 respectively with the other end of 3rd resistor R158 and the three-prong of the second optocoupler IC151
It is connected, the detection output of the other end of the 4th resistance R1511 as first detection unit 11；One end of first capacitance C151 with
The other end of 4th resistance R1511 is connected, after the other end of the first capacitance C151 is connected with the 4th pin of the second optocoupler IC151
Ground connection.
Alternatively, current-limiting resistance R151 can be high-power resistance.
It should be noted that with reference to Fig. 3, first detection unit 11,12 and the 3rd detection unit 13 of second detection unit
Circuit structure is identical.
Further, in this embodiment, controllable switch circuit 20 can be optocoupler control circuit or control relay circuit.
Specifically, when controllable switch circuit 20 is optocoupler control circuit, controllable switch circuit 20 includes：First resistor
R1514, second resistance R1515 and the first optocoupler IC154.
Wherein, with reference to Fig. 3, one end of first resistor R1514 is connected with the control output end of control chip 30；Second resistance
One end of R1515 is connected with the other end of first resistor R1514, the other end ground connection of second resistance R1515.First optocoupler
The first pin of IC154 is connected with the other end of first resistor R1514 and one end of second resistance R1515 respectively, the first optocoupler
The second pin of IC154 is connected with the other end of second resistance R1515, three-prong and the first node P of the first optocoupler IC154
It is connected, the 4th pin of the first optocoupler IC154 is connected with the N lines of three-phase electricity.
Specifically, with reference to Fig. 3, when air-conditioner set needs to detect three-phase phase sequence, control chip 30 is defeated by output terminal
Go out high level, turn on the first optocoupler IC154, so that controllable switch circuit 20 turns on.At this time, three-phase detection circuit 10 is in work
Make state, the electric current of A phases electricity passes through rectifier diode D151, current-limiting resistance R151, the second optocoupler IC151 and the first optocoupler
IC154 flows to N lines；The electric current of B phases electricity passes through rectifier diode D152, current-limiting resistance R152, the second optocoupler IC152 and the first light
Coupling IC154 flows to N lines；The electric current of C phases electricity flows through over commutation diode D153, current-limiting resistance R153, the 3rd optocoupler IC153 and
One optocoupler IC154 flows to N lines, thus, it is possible to realize the detection to three-phase phase sequence.
When air-conditioner set need not detect three-phase phase sequence, control chip 30 exports low level by output terminal, makes the
One optocoupler IC154 ends, so that controllable switch circuit 20 disconnects, and then three-phase detection circuit 10 is stopped.At this time without electricity
Stream flows through current-limiting resistance R151, R152 and R153, so as to reduce the power consumption of air-conditioner set.
To sum up, according to the three-phase phase sequence detection device of the air-conditioner set of the utility model embodiment, when air-conditioner set needs
When detecting three-phase phase sequence, control chip exports first control signal to control controllable switch electric by control output end
Road turns on, and then the phase sequence of three-phase electricity is detected by three-phase detection circuit；When air-conditioner set need not detect three-phase electricity
When phase sequence, control chip exports second control signal to control controllable switch circuit to disconnect by control output end, and then
Three-phase detection circuit is set to be stopped.Thereby, it is possible to three-phase detection circuit, drop are disconnected when need not carry out Phase sequence detection
The low power consumption of air-conditioner set, while the failure rate of component in three-phase detection circuit can also be reduced, improve three-phase electricity phase
The reliability of sequence detection.
Further, the utility model proposes a kind of air-conditioner set.
Fig. 4 is the block diagram according to the air-conditioner set of the utility model embodiment.As shown in figure 4, the air-conditioner set 1000
Three-phase phase sequence detection device 100 including above-mentioned air-conditioner set.
The air-conditioner set of the utility model, using the three-phase phase sequence detection device of above-mentioned air-conditioner set, can be not required to
Carry out disconnecting three-phase detection circuit when Phase sequence detection, reduce the power consumption of air-conditioner set, while three-phase can also be reduced
The failure rate of component in detection circuit, improves the reliability of three-phase phase sequence detection.
It should be appreciated that each several part of the utility model can be realized with hardware, software, firmware or combinations thereof.
In the above embodiment, what multiple steps or method can be performed in memory and by suitable instruction execution system with storage
Software or firmware are realized.If, and in another embodiment, can be with known in this field for example, realized with hardware
Any one of following technology or their combination realize：With the logic gate for realizing logic function to data-signal
The discrete logic of circuit, the application-specific integrated circuit with suitable combinational logic gate circuit, programmable gate array (PGA),
Field programmable gate array (FPGA) etc..
In the description of the utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " suitable
The orientation or position relationship of the instruction such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " are based on orientation shown in the drawings
Or position relationship, be for only for ease of description the utility model and simplify and describe, rather than instruction or imply signified device or
Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that limit to the utility model
System.
In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the utility model, " multiple " are meant that at least two, such as two
It is a, three etc., unless otherwise specifically defined.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be
Mechanically connect or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, can be two
The interaction relationship of connection or two elements inside element, unless otherwise restricted clearly.For the common skill of this area
For art personnel, concrete meaning of the above-mentioned term in the utility model can be understood as the case may be.
In the utility model, unless otherwise clearly defined and limited, fisrt feature is "above" or "below" second feature
Can be that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, first is special
Sign second feature " on ", " top " and " above " can be fisrt feature directly over second feature or oblique upper, or only
Represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be with
Be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height and be less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
State and be necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with
Combine in an appropriate manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this area
Technical staff can by the different embodiments or example described in this specification and different embodiments or exemplary feature into
Row combines and combination.
Although the embodiment of the utility model has been shown and described above, it is to be understood that above-described embodiment is
Exemplary, it is impossible to the limitation to the utility model is interpreted as, those of ordinary skill in the art are in the scope of the utility model
It is interior above-described embodiment to be changed, changed, replaced and modification.
Claims (7)
- A kind of 1. three-phase phase sequence detection device of air-conditioner set, it is characterised in that including：Three-phase detection circuit, the three-phase detection circuit include first detection unit, second detection unit and the 3rd detection unit, The first end of the first end of the first detection unit, the first end of the second detection unit and the 3rd detection unit point The A phases, B phases and C phases of three-phase electricity Dui Ying be connected to, the second end of the first detection unit, the second detection unit Second end is connected together to form first node with the second end of the 3rd detection unit；Controllable switch circuit, the first end of the controllable switch circuit are connected with the first node, the controllable switch circuit Second end be connected to the N lines of the three-phase electricity；Control chip, the first input end of the control chip, the second input terminal and the 3rd input terminal are examined with described first respectively Survey the detection output of the detection output of unit, the detection output of the second detection unit and the 3rd detection unit It is connected, the control output end of the control chip is connected with the control terminal of the controllable switch circuit, wherein,The control chip exports first control signal to control the controllable switch circuit turn-on by the control output end When, the phase sequence of the three-phase electricity is detected by the three-phase detection circuit；The control chip exports second control signal to control the controllable switch circuit to disconnect by the control output end When, the three-phase detection circuit is stopped.
- 2. the three-phase phase sequence detection device of air-conditioner set as claimed in claim 1, it is characterised in that the controllable switch electricity Road is optocoupler control circuit or control relay circuit.
- 3. the three-phase phase sequence detection device of air-conditioner set as claimed in claim 1, it is characterised in that the controllable switch electricity Road includes：First resistor, one end of the first resistor are connected with the control output end of the control chip；Second resistance, one end of the second resistance are connected with the other end of the first resistor, the second resistance it is another End ground connection；First optocoupler, the first pin of first optocoupler respectively with the other end of the first resistor and the second resistance One end is connected, and the second pin of first optocoupler is connected with the other end of the second resistance, and the 3rd of first optocoupler the Pin is connected with the first node, and the 4th pin of first optocoupler is connected with the N lines of the three-phase electricity.
- 4. the three-phase phase sequence detection device of the air-conditioner set as any one of claim 1-3, it is characterised in that described First detection unit, second detection unit are identical with the circuit structure of the 3rd detection unit.
- 5. the three-phase phase sequence detection device of air-conditioner set as claimed in claim 4, it is characterised in that first detection is single Member includes：Rectifier diode, the first end of the anode of the rectifier diode as the first detection unit；Current-limiting resistance, one end of the current-limiting resistance are connected with the cathode of the rectifier diode；Divider resistance, one end of the divider resistance are connected with the other end of the current-limiting resistance, the divider resistance it is another Hold the second end as the first detection unit；Second optocoupler, the first pin of second optocoupler are connected with one end of the divider resistance, and the of second optocoupler Two pins are connected with the other end of the divider resistance；3rd resistor, one end of the 3rd resistor are connected with default power supply, the other end of the 3rd resistor and described second The three-prong of optocoupler is connected；4th resistance, one end of the 4th resistance respectively with the other end of the 3rd resistor and second optocoupler the 3rd Pin is connected, the detection output of the other end of the 4th resistance as the first detection unit；First capacitance, one end of first capacitance are connected with the other end of the 4th resistance, first capacitance it is another End is grounded after being connected with the 4th pin of second optocoupler.
- 6. the three-phase phase sequence detection device of air-conditioner set as claimed in claim 5, it is characterised in that the current-limiting resistance is High-power resistance.
- 7. a kind of air-conditioner set, it is characterised in that include the three-phase electricity of the air-conditioner set as any one of claim 1-6 Detection device for phase sequence.
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| CN201721349421.0U CN207301184U (en) | 2017-10-18 | 2017-10-18 | Air-conditioner set and its three-phase phase sequence detection device |
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|---|---|---|---|
| CN201721349421.0U CN207301184U (en) | 2017-10-18 | 2017-10-18 | Air-conditioner set and its three-phase phase sequence detection device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108957155A (en) * | 2018-06-28 | 2018-12-07 | 格力电器（武汉）有限公司 | Method and tool for automatically detecting target object |
| CN111426890A (en) * | 2020-04-22 | 2020-07-17 | 海信（山东）空调有限公司 | Phase sequence detection circuit, outdoor unit, air conditioner and control method |
| CN113267685A (en) * | 2021-07-05 | 2021-08-17 | 珠海格力电器股份有限公司 | Phase sequence detection device and method and electrical equipment |
-
2017
- 2017-10-18 CN CN201721349421.0U patent/CN207301184U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108957155A (en) * | 2018-06-28 | 2018-12-07 | 格力电器（武汉）有限公司 | Method and tool for automatically detecting target object |
| CN111426890A (en) * | 2020-04-22 | 2020-07-17 | 海信（山东）空调有限公司 | Phase sequence detection circuit, outdoor unit, air conditioner and control method |
| CN113267685A (en) * | 2021-07-05 | 2021-08-17 | 珠海格力电器股份有限公司 | Phase sequence detection device and method and electrical equipment |
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