CN206351653U - Refrigerator car protects system - Google Patents
Refrigerator car protects system Download PDFInfo
- Publication number
- CN206351653U CN206351653U CN201621492475.8U CN201621492475U CN206351653U CN 206351653 U CN206351653 U CN 206351653U CN 201621492475 U CN201621492475 U CN 201621492475U CN 206351653 U CN206351653 U CN 206351653U
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- CN
- China
- Prior art keywords
- module
- fly
- fuse
- wheel diode
- relay contact
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model is using a kind of refrigerator car protection system of following technological means; including being provided with five fuses in a protection system module; each fuse connects a display device and a relay contact; relay contact connects a motor and a protection device, and earthing module is connected with motor and protection device；Display device is a LED and a current-limiting resistance, and the two ends of fuse simultaneously connect LED and current-limiting resistance；Protection device is a fly-wheel diode, and the negative pole of fly-wheel diode is connected with relay contact, and the positive pole of fly-wheel diode is connected with earthing module.At each fuse two ends and a LED and current-limiting resistance are connect, the working condition for observing fuse can know location of fault at once during failure by LED.Add a fly-wheel diode in relay output contact and earth terminal, produced during motor stopping it is upper it is negative under positive back-emf E, fallen by diode absorption, can effective protective relay contact.
Description
Technical field
The utility model is related to a kind of refrigerator car protection system.
Background technology
The operating current of each direct current generator reaches tens amperes in the refrigeration yarn system of refrigerator car, when motor is by running to
When shutting down or occurring stall failure, back-emf and electric current produced by it are all very big, i.e. back-emf superposition supply voltage is added in
Relay contact two ends, it is easy to burn out relay contact and be welded together it.The relay contact also fuses with one
Device is connected together, and the situation of the relay is reflected by the situation of fuse.Each yarn system of refrigerator car such as compressor, evaporation wind
Flat, condenser fan, defrosting electric motor protecting have a corresponding fuse, have 5 fuses.When the open circuit event of some fuse
During barrier, can not judge it is that fuse is faulty immediately as value driver, delay the repair time.
Utility model content
For background technology problem encountered, the purpose of this utility model is that fuse can accurately be judged by providing one kind
Abort situation and the refrigerator car protection system that protection is provided with to relay contact.
To achieve the above object, the utility model is using a kind of refrigerator car protection system of following technological means, including an electricity
Source module connects a refrigerating system module and a control cartridge module respectively, and the refrigerating system module connection one connects electric switch lock module
And an earthing module, the control cartridge module connects the refrigerating system module and connects electric switch lock module with described, described to connect electric switch
Lock module connects the earthing module, the refrigerating system module and the control cartridge module；The refrigerating system module is provided with
Provided with five fuses in one protection system module, the protection system module, each fuse connects a display device
And a relay contact, the relay contact connects a motor and a protection device, the earthing module and the motor and
The protection device connection；The display device is a LED and a current-limiting resistance, and the two ends of the fuse simultaneously connect described
LED and the current-limiting resistance；The protection device is a fly-wheel diode, the negative pole of the fly-wheel diode and the relay
Device contact portion, the positive pole of the fly-wheel diode is connected with the earthing module.
Further, the voltage of the power module output is 12V.
Further, the current-limiting resistance is 1K.
Further, the motor and the fly-wheel diode and connect.
Further, the model FR307 of the fly-wheel diode.
Compared with prior art, the utility model has the advantages that：At each fuse two ends and connect a LED
And current-limiting resistance, the working condition for observing fuse, location of fault can be known by LED at once during failure.
Add a fly-wheel diode in relay output contact and earth terminal, produced during motor stopping it is upper it is negative under positive back-emf E, quilt
Diode absorption falls, can effective protective relay contact.
Brief description of the drawings
Fig. 1 is one of schematic diagram that refrigerator car of the present utility model protects system；
Fig. 2 is the two of the schematic diagram that refrigerator car of the present utility model protects system；
Fig. 3 is the circuit theory diagrams that refrigerator car of the present utility model protects system.
Embodiment
It is with reference to accompanying drawing and specifically real for ease of being better understood from the purpose of this utility model, structure, feature and effect etc.
Applying mode, the utility model is described in further detail.
As shown in accompanying drawing 1 to accompanying drawing 3, refrigerator car of the present utility model protects system, including a power module to connect respectively
One refrigerating system module and a control cartridge module, the refrigerating system module connection one connect electric switch lock module and an earthing module,
The control cartridge module connects the refrigerating system module and connects electric switch lock module with described, and the electric switch lock module that connects connects described
Earthing module, the refrigerating system module and the control cartridge module.The power module is a battery, and the voltage of output is
12V。
The refrigerating system module is provided with a protection system module, and the protection system module is interior provided with five fuses,
Each fuse connects a display device and a relay contact.
The display device is a LED and a current-limiting resistance, and the two ends of the fuse simultaneously connect the LED and described
Current-limiting resistance, the current-limiting resistance is 1K.During fuse normal work, its two terminal potential is zero, and LED does not work.Fuse
During open circuit, two ends are to have 12V voltages, by the effect of current-limiting resistance, and LED is bright, and driver can change the bright correspondence of LED at once
Fuse, make yarn unite normal work.
The relay contact connects a motor and a protection device, the earthing module and the motor and the protection
Device is connected.The protection device is a fly-wheel diode, and the negative pole of the fly-wheel diode is connected with the relay contact,
The positive pole of the fly-wheel diode is connected with the earthing module.The model FR307 of the fly-wheel diode.The motor with
The fly-wheel diode simultaneously connects, direct current generator produced when shutting down it is upper it is negative under positive back-emf E, fallen by diode absorption, can be with
Effective protective relay contact.
System is at each fuse two ends and connects a LED and current-limiting resistance for refrigerator car protection of the present utility model, is used for
The working condition of fuse is observed, location of fault can be known at once by LED during failure, fuse is judged exactly
Location of fault.Add a fly-wheel diode in relay contact and earth terminal, produced during motor stopping it is upper it is negative under it is positive anti-
Potential E, is fallen by diode absorption, can effective protective relay contact.
Detailed description above is only the explanation of the preferred embodiment of the utility model, and non-therefore limitation is of the present utility model specially
Sharp scope, so, all equivalence techniques changes with carried out by this creation specification and diagramatic content are both contained in the utility model
The scope of the claims in.
Claims (5)
1. a kind of refrigerator car protects system, it is characterised in that including：
One power module connects a refrigerating system module and a control cartridge module respectively, and the refrigerating system module connection one connects electricity
Door lock module and an earthing module, the control cartridge module connect the refrigerating system module and connect electric switch lock module, institute with described
State and connect the electric switch lock module connection earthing module, the refrigerating system module and the control cartridge module；
The refrigerating system module is provided with a protection system module, and the protection system module is interior to be provided with five fuses, each
The fuse connects a display device and a relay contact, and the relay contact connects a motor and a protection device,
The earthing module is connected with the motor and the protection device；The display device is a LED and a current-limiting resistance, institute
State the two ends of fuse and connect the LED and the current-limiting resistance；The protection device is a fly-wheel diode, the afterflow
The negative pole of diode is connected with the relay contact, and the positive pole of the fly-wheel diode is connected with the earthing module.
2. refrigerator car as claimed in claim 1 protects system, it is characterised in that：The voltage of the power module output is 12V.
3. refrigerator car as claimed in claim 1 protects system, it is characterised in that：The current-limiting resistance is 1K.
4. refrigerator car as claimed in claim 1 protects system, it is characterised in that：The motor and the fly-wheel diode are simultaneously
Connect.
5. refrigerator car as claimed in claim 1 protects system, it is characterised in that：The model FR307 of the fly-wheel diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621492475.8U CN206351653U (en) | 2016-12-30 | 2016-12-30 | Refrigerator car protects system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621492475.8U CN206351653U (en) | 2016-12-30 | 2016-12-30 | Refrigerator car protects system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206351653U true CN206351653U (en) | 2017-07-25 |
Family
ID=59349254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621492475.8U Active CN206351653U (en) | 2016-12-30 | 2016-12-30 | Refrigerator car protects system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206351653U (en) |
-
2016
- 2016-12-30 CN CN201621492475.8U patent/CN206351653U/en active Active
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