CN206759356U - A kind of power distribution circuit of magnetic suspension refrigeration unit - Google Patents
A kind of power distribution circuit of magnetic suspension refrigeration unit Download PDFInfo
- Publication number
- CN206759356U CN206759356U CN201720594265.8U CN201720594265U CN206759356U CN 206759356 U CN206759356 U CN 206759356U CN 201720594265 U CN201720594265 U CN 201720594265U CN 206759356 U CN206759356 U CN 206759356U
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- China
- Prior art keywords
- phase
- reactor
- magnetic suspension
- refrigeration unit
- power distribution
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- 239000000725 suspension Substances 0.000 title claims abstract description 21
- 238000005057 refrigeration Methods 0.000 title claims abstract description 20
- 238000010586 diagram Methods 0.000 description 2
- 238000010977 unit operation Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Abstract
The utility model discloses a kind of power distribution circuit of magnetic suspension refrigeration unit, including three-phase power switch, three fuses being connected with the other end of three-phase power switch, a three-phase voltage increasing reactor being connected with three fuses and three contactors being connected with three-phase voltage increasing reactor that one end electrically connects with 380V cities.The three-phase voltage increasing reactor is in series by a three-phase reactor and a three-phase transformer and is made an overall structure；One end of three groups of coils of three-phase reactor is connected with three fuses correspondingly, primary coil of the other end of three groups of coils of three-phase reactor correspondingly with the three-phase transformer is connected, and the one end of the secondary coil of three-phase transformer correspondingly with three contactors is connected；The other end of three contactors is all connected with the compressor of magnetic suspension refrigeration unit.Power distribution circuit of the present utility model can make the input voltage of compressor reach 400V, so that unit obtains wider more stably range of operation.
Description
Technical field
It the utility model is related to a kind of power distribution circuit of magnetic suspension refrigeration unit.
Background technology
For in the power distribution circuit of magnetic suspension refrigeration unit usually require configuration reactor, with suppress due to unit operation when
Harmonic wave caused by the power network of upstream, on the other hand it is for limiting short-circuit current.Existing power distribution circuit (see Fig. 1) include one end with
1, three fuse being connected correspondingly with the other end of three-phase power switch 1 of three-phase power switch of 380V cities electrical connection
2nd, three reactors 4 ' being connected correspondingly with three fuses 2 and three are connected with three reactors 4 ' correspondingly
Contactor 5, a diamagnetism interference filter 3, three contactors are also connected between three fuses 2 and three reactors 4 '
The compressor 6 of 5 connection magnetic suspension refrigeration units, wherein reactor 4 ' is common reactor.
The input voltage of compressor in existing magnetic suspension refrigeration unit is 400V, but tolerance interval be 360V~
440Vac, and domestic current line voltage is all 380Vac.Although domestic supply district is in connecing for machine set compressor
By scope, but this may make unit cause unit operation range shorter under indivedual operating modes and influence unit distribution system.By
It is equal to the product of voltage and electric current in power, i.e. P=U × I, if input voltage is too low, compressor is in order to obtain same work(
Rate, necessarily electric current is caused to increase, but due to the permission current limit of current controlled device processed and controller switching equipment, so as to cause unit not
Wider and stable working range can be obtained.More stable can reliably it be worked in order that obtaining unit, it is therefore desirable in power distribution circuit
Middle increase booster, makes the input voltage of compressor reach 400V.But because the component of power distribution circuit is all mounted in machine
In the switch board of group, if the volume of switch board certainly will will be increased by being further added by booster.
Utility model content
The defects of the purpose of this utility model is to overcome prior art and a kind of distribution of magnetic suspension refrigeration unit is provided
Circuit, it can make the input voltage of compressor reach 400V, so that unit obtains wider more stably range of operation.
What the purpose of this utility model was realized in：A kind of power distribution circuit of magnetic suspension refrigeration unit, including one end with
The three-phase power switch of 380V cities electrical connection, three fuses being connected with the other end of three-phase power switch, one and three
The three-phase voltage increasing reactor and three contactors being connected with three-phase voltage increasing reactor of fuse connection, wherein,
The three-phase voltage increasing reactor is in series by a three-phase reactor and a three-phase transformer and to be made one whole
Body structure；One end of three groups of coils of the three-phase reactor is connected with three fuses correspondingly, three-phase reactor
Primary coil of the other end of three groups of coils correspondingly with the three-phase transformer is connected, the secondary coil of three-phase transformer
One end with three contactors is connected correspondingly；
The other end of three contactors is all connected with the compressor of magnetic suspension refrigeration unit.
The power distribution circuit of above-mentioned magnetic suspension refrigeration unit, wherein, the distribution system also includes being connected to three fusing
Diamagnetism interference filter between device and three-phase voltage increasing reactor.
The power distribution circuit of magnetic suspension refrigeration unit of the present utility model has the characteristics that：By the way that common reactor is changed
To form a boosting reactor by two, a part is reactor, and another part is step-up transformer, and it is whole that two parts are made into one
Body structure, the input voltage of compressor can be made to reach 400V, so that unit obtains wider more stably range of operation.Separately
Outside, because boosting reactor is overall structure, the switch board for being used in the component of placement power distribution circuit keeps original volume.
Brief description of the drawings
Fig. 1 is the schematic diagram of the power distribution circuit of the magnetic suspension refrigeration unit of prior art；
Fig. 2 is the schematic diagram of the power distribution circuit of magnetic suspension refrigeration unit of the present utility model；
Fig. 3 is the structural representation of the boosting reactor in power distribution circuit of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Refer to Fig. 2 and Fig. 3, the power distribution circuit of magnetic suspension refrigeration unit of the present utility model, including three-phase power switch
1st, the three diamagnetism interference filter 3, one of fuse 2, one three-phase voltage increasing reactors 4, be that contactor 5, wherein；
One end of three-phase power switch 1 electrically connects with 380V cities；One end of three fuses 2 correspondingly with three-phase electricity
The other end connection of source switch 1；One end of diamagnetism interference filter 3 is connected with the other end of three fuses 2；Three-phase voltage increasing
One end of reactor 4 is connected with the other end of diamagnetism interference filter 3；The other end of three-phase voltage increasing reactor 4 corresponds
Ground is connected with one end of three contactors 5, and the other end of three contactors 5 is all connected with the compressor 6 of magnetic suspension refrigeration unit.
Three-phase voltage increasing reactor 4 is in series and made by a common three-phase reactor 4 ' and a three-phase transformer 40
Integral structure；One end of three groups of coils of three-phase reactor 4 ' is connected with three fuses 2 correspondingly；Three-phase reactor
Primary coil of the other end of three groups of coils of device 4 ' correspondingly with three-phase transformer 40 is connected, time of three-phase transformer 40
The one end of level coil correspondingly with three contactors 5 is connected.
The power distribution circuit of magnetic suspension unit of the present utility model, by the way that common reactor to be changed to form one by two parts
Boost reactor, and a part is reactor, and another part is step-up transformer, and by adjusting step-up transformer, Ke Yigai
The input voltage of variable compression machine, the input voltage of compressor can be made to rise to 400V or higher by 380V, so that unit obtains
Obtain wider more stably range of operation.Further, since boosting reactor is overall structure, first device of placement power distribution circuit is used in
The switch board of part keeps original volume.
Above example is only for illustration of the utility model, rather than to limitation of the present utility model, relevant technical field
Technical staff, in the case where not departing from spirit and scope of the present utility model, various conversion or modification can also be made, because
This all equivalent technical scheme should also belong to category of the present utility model, should be limited by each claim.
Claims (2)
1. a kind of power distribution circuit of magnetic suspension refrigeration unit, including one end electrically connected with 380V cities three-phase power switch, three
The fuse that is connected with the other end of three-phase power switch, a three-phase voltage increasing reactor being connected with three fuses and three
The contactor being connected with three-phase voltage increasing reactor, it is characterised in that
The three-phase voltage increasing reactor is in series by a three-phase reactor and a three-phase transformer and makes integral knot
Structure；One end of three groups of coils of the three-phase reactor is connected with three fuses correspondingly, three groups of three-phase reactor
Primary coil of the other end of coil correspondingly with the three-phase transformer is connected, and the secondary coil of three-phase transformer is one by one
Accordingly one end with three contactors is connected；
The other end of three contactors is all connected with the compressor of magnetic suspension refrigeration unit.
2. the power distribution circuit of magnetic suspension refrigeration unit according to claim 1, it is characterised in that the distribution system is also wrapped
Include the diamagnetism interference filter being connected between three fuses and three-phase voltage increasing reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720594265.8U CN206759356U (en) | 2017-05-25 | 2017-05-25 | A kind of power distribution circuit of magnetic suspension refrigeration unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720594265.8U CN206759356U (en) | 2017-05-25 | 2017-05-25 | A kind of power distribution circuit of magnetic suspension refrigeration unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206759356U true CN206759356U (en) | 2017-12-15 |
Family
ID=60619221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720594265.8U Active CN206759356U (en) | 2017-05-25 | 2017-05-25 | A kind of power distribution circuit of magnetic suspension refrigeration unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206759356U (en) |
-
2017
- 2017-05-25 CN CN201720594265.8U patent/CN206759356U/en active Active
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