CN203867809U - Variable-frequency refrigeration compressor - Google Patents
Variable-frequency refrigeration compressor Download PDFInfo
- Publication number
- CN203867809U CN203867809U CN201420184484.5U CN201420184484U CN203867809U CN 203867809 U CN203867809 U CN 203867809U CN 201420184484 U CN201420184484 U CN 201420184484U CN 203867809 U CN203867809 U CN 203867809U
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- rotor
- variable
- sealed connecting
- connecting terminal
- frequency motor
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- Control Of Positive-Displacement Pumps (AREA)
Abstract
A variable-frequency refrigeration compressor comprises a sealed shell 2, a compression mechanism 5 and a variable-frequency motor 3 arranged inside the sealed shell 2. The variable-frequency motor 3 comprises a stator and a rotor 32. The rotor 32 transmits power to the compression mechanism 5 through a transmission mechanism 6. A sealed terminal assembly 4 for power connection is installed on the sealed shell 2. A power connection line of the variable-frequency motor is connected to a sealed terminal 41 for power connection. A rotor-position sensor 8 is installed inside the sealed shell 2 of the variable-frequency refrigeration compressor. Meanwhile, a sealed terminal 91 for sensor connection connected with an outgoing line of the rotor-position sensor is installed on the sealed shell. A control circuit can reliably detect the position of the rotor in any working stage of the variable-frequency motor, the phenomenon that normal operation can not be carried out due to the out-of-step situation does not occur, and dependence on a complex drive program is not needed particularly in the starting process of the motor.
Description
Technical field
The utility model relates to a kind of sealed refrigeration compressor, especially sealed type Refrigerating Compressor with Inverter.
Technical background
As shown in Figure 1, the sealed type Refrigerating Compressor with Inverter of prior art, at the interior installation variable-frequency motor 3 of can 2, comprises stator 31 and rotor 32, rotor by driving mechanism 6 by transmission of power to compressing mechanism 5.In figure, 51 is sucking pipes, the 52nd, and outlet pipe.Used for electric power connection sealed connecting terminal assembly 4 is installed on can, and this assembly comprises base 43, sealed connecting terminal 41, insulator 42.Sealed connecting terminal assembly 4 is arranged on can 2 by welding part 7.Variable-frequency motor adopts permanent-magnet rotor synchronous motor conventionally.During permanent-magnet rotor synchronous motor work, needing detection rotor position, the rotor position detecting method of prior art is to determine rotor-position by detecting the counterelectromotive force of motor stator winding, and still, this kind of method exists defect.Because motor must could produce counterelectromotive force when rotor rotates and reaches enough rotating speeds on staor winding, so, the sealed type Refrigerating Compressor with Inverter of prior art has designed the start-up sequence of a set of complexity, and must guarantee that starting process motor torque is enough large, motor load is not too large simultaneously, so just can make motor starting process out-of-step free, just can complete starting process; In addition, complicated start-up sequence has also increased the development difficulty of product, and has reduced the reliability of product.
Summary of the invention
The purpose of this utility model is to improve the reliability of sealed type Refrigerating Compressor with Inverter work, makes variable-frequency motor there will not be step loss condition and cisco unity malfunction, and needn't rely on complicated driver, particularly in the starting process of motor.
A kind of Refrigerating Compressor with Inverter of the utility model solves the technological scheme that its technical problem adopts: Refrigerating Compressor with Inverter comprises can 2, compressing mechanism 5 and variable-frequency motor 3 are placed in can 2 inside, variable-frequency motor 3 comprises stator and rotor 32, rotor 32 by driving mechanism 6 by transmission of power to compressing mechanism 5, used for electric power connection sealed connecting terminal 41 is installed on can 2, the electric power connection line of variable-frequency motor 3 is connected to described used for electric power connection sealed connecting terminal 41, it is characterized in that: can 2 inside are provided with rotor-position sensor 8, sensor is also installed on can 2 to be connected with sealed connecting terminal 91, the signaling line of rotor-position sensor 8 is connected to described sensor and connects with sealed connecting terminal 91.
Above-mentioned a kind of Refrigerating Compressor with Inverter, the rotor-position sensor of employing two-wire system, rotor-position sensor has two lighting outlets.The object that adopts the rotor-position sensor of two-wire system is can reduce sensor to connect the quantity with sealed connecting terminal.
Above-mentioned a kind of Refrigerating Compressor with Inverter, two lighting outlets of each rotor-position sensor wherein one be connected to each other and form common port 81, this common port is connected to the can of compressor, and an other lighting outlet is connected to separately respectively a described sensor and connects with sealed connecting terminal 91.
Above-mentioned a kind of Refrigerating Compressor with Inverter, several used for electric power connection sealed connecting terminals form a sealed connecting terminal assembly 4, and several sensors connect with sealed connecting terminal and form another one sealed connecting terminal assembly 9.
Above-mentioned a kind of Refrigerating Compressor with Inverter, 3 used for electric power connection sealed connecting terminals form 4,3 sensors of a sealed connecting terminal assembly and connect with sealed connecting terminal composition another one sealed connecting terminal assembly 9.
Rotor-position sensor 8 plays the effect that realizes contactless commutation in the present invention.Rotor-position sensor is measured rotor magnetic pole position, for variable-frequency motor control circuit 11 and variable frequency motor-driving circuit 10 provide correct commutation information, is to convert the position signal of rotor magnetic steel magnetic pole to electrical signal, then goes to control staor winding commutation.Rotor-position sensor has the kinds such as electromagnetic type, photoelectric, Mageneto-sensitive type, and the magnetoelectricity transition components forming with Hall effect principle.No matter because be state of rest or the rotary state at variable-frequency motor rotor, or at different rotating speeds state, rotor-position sensor can both reliable detection to the position of magnetic pole of rotor, so control the logic switching circuit of machine operation, being that variable-frequency motor control circuit 11 and variable frequency motor-driving circuit 10 can accurately be followed rotor magnetic pole position and carried out reliable commutation, there is not the problem of step-out at any working stage in motor.Meanwhile, also no longer must design special start-up sequence and control the work of variable-frequency motor.
Accompanying drawing explanation
Fig. 1 is prior art Refrigerating Compressor with Inverter structural representation.
Fig. 2 is the utility model Refrigerating Compressor with Inverter structural representation.
Fig. 3 is the schematic diagram that the utility model Refrigerating Compressor with Inverter is connected with control circuit with external drive with Fig. 4.
In figure, 2-can, 3-variable-frequency motor, 4-used for electric power connection sealed connecting terminal assembly, 5-compressing mechanism, 6-driving mechanism, 7-welding part, 8-rotor-position sensor, 9-sensor connects uses sealed connecting terminal assembly, 10-variable frequency motor-driving circuit, 11-variable-frequency motor control circuit.
Embodiment
As shown in Figure 2, the utility model Refrigerating Compressor with Inverter comprises can 2, and compressing mechanism 5 and variable-frequency motor 3 are placed in can 2 inside.Rotor 32 by driving mechanism 6 by transmission of power to compressing mechanism 5.On can 2, by welding part 7, used for electric power connection sealed connecting terminal assembly 4 is installed, 3 electric power connection lines of variable-frequency motor are connected to respectively 3 used for electric power connection sealed connecting terminals 41, can 2 inside are provided with several rotor-position sensors 8 around at rotor 32, sensor is also installed on can 2 and connects with sealed connecting terminal assembly 9, the signaling line of rotor-position sensor 8 is connected to described sensor and connects with sealed connecting terminal 91.The present embodiment adopts 3 rotor-position sensors.
As shown in Figure 2, rotor-position sensor 8 adopts two-wire system mode, and each rotor-position sensor has two lighting outlets.
As shown in Figure 2, one of two lighting outlets of each rotor-position sensor is interconnected to form common port 81, this common port is connected to the can 2 of Refrigerating Compressor with Inverter, and another root lighting outlet is connected to respectively a described sensor and connects with sealed connecting terminal 91.
As shown in Figure 2,3 used for electric power connection sealed connecting terminals 41 form 4,3 sensors connections of a sealed connecting terminal assembly and form another one sealed connecting terminal assemblies 9 with sealed connecting terminal 91.
As shown in Figure 3, variable-frequency motor control circuit 11 is accepted the rotor position information that rotor-position sensor is sent here, and transmits control signal to variable frequency motor-driving circuit 10.
As shown in Figure 3, rotor-position sensor working power adopts DC electrical source, and positive source connects the can of frequency-changeable compressor, and power cathode and variable-frequency motor control circuit 11 are altogether.
As shown in Figure 4, variable-frequency motor control circuit 11 also can with the can of frequency-changeable compressor altogether.
As shown in Figure 4, rotor-position sensor working power also can adopt ac power supply.
Claims (7)
1. a Refrigerating Compressor with Inverter, comprise can, compressing mechanism and variable-frequency motor are placed in can inside, variable-frequency motor comprises stator and rotor, rotor by driving mechanism by transmission of power to compressing mechanism, used for electric power connection sealed connecting terminal is installed on can, the electric power connection line of variable-frequency motor is connected to described used for electric power connection sealed connecting terminal, it is characterized in that: can inside is provided with rotor-position sensor, sensor connection sealed connecting terminal is also installed on can, the signaling line of rotor-position sensor is connected to described sensor connection sealed connecting terminal.
2. Refrigerating Compressor with Inverter according to claim 1, is characterized in that: each rotor-position sensor has two lighting outlets.
3. Refrigerating Compressor with Inverter according to claim 2, it is characterized in that: one of two lighting outlets of each rotor-position sensor is interconnected to form common port, this common port is connected to the can of Refrigerating Compressor with Inverter, and another root lighting outlet is connected to respectively a described sensor connection sealed connecting terminal.
4. according to the Refrigerating Compressor with Inverter described in claim 1 or 2 or 3, it is characterized in that: several used for electric power connection sealed connecting terminals form a sealed connecting terminal assembly, several sensors connect with sealed connecting terminal and form another one sealed connecting terminal assembly.
5. Refrigerating Compressor with Inverter according to claim 4, is characterized in that: 3 used for electric power connection sealed connecting terminals form a sealed connecting terminal assembly, and 3 sensors connect with sealed connecting terminal and form another one sealed connecting terminal assembly.
6. Refrigerating Compressor with Inverter according to claim 1, it is characterized in that: the rotor position information that rotor-position sensor is obtained is sent to variable-frequency motor control circuit, variable-frequency motor control circuit transmits control signal to variable frequency motor-driving circuit according to the position information obtaining.
7. Refrigerating Compressor with Inverter according to claim 5, it is characterized in that: the rotor position information that rotor-position sensor is obtained is sent to variable-frequency motor control circuit, variable-frequency motor control circuit transmits control signal to variable frequency motor-driving circuit according to the position information obtaining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420184484.5U CN203867809U (en) | 2014-04-16 | 2014-04-16 | Variable-frequency refrigeration compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420184484.5U CN203867809U (en) | 2014-04-16 | 2014-04-16 | Variable-frequency refrigeration compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203867809U true CN203867809U (en) | 2014-10-08 |
Family
ID=51648772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420184484.5U Expired - Fee Related CN203867809U (en) | 2014-04-16 | 2014-04-16 | Variable-frequency refrigeration compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203867809U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883498A (en) * | 2014-04-16 | 2014-06-25 | 黄智航 | Frequency conversion refrigeration compressor |
-
2014
- 2014-04-16 CN CN201420184484.5U patent/CN203867809U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883498A (en) * | 2014-04-16 | 2014-06-25 | 黄智航 | Frequency conversion refrigeration compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Huang Zhihang Document name: Notice of termination of patent right |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141008 Termination date: 20210416 |