CN206948060U - Motor rotor, motor and DC frequency-changeable compressor - Google Patents
Motor rotor, motor and DC frequency-changeable compressor Download PDFInfo
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- CN206948060U CN206948060U CN201720728379.7U CN201720728379U CN206948060U CN 206948060 U CN206948060 U CN 206948060U CN 201720728379 U CN201720728379 U CN 201720728379U CN 206948060 U CN206948060 U CN 206948060U
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Abstract
The utility model provides a kind of motor rotor, motor and DC frequency-changeable compressor, due to being provided that magnetic V block groove in rotor core, the dosage of embedded permanent magnet is significantly improved, so as to improve motor torque density, motor high efficiency, small form factor requirements are disclosure satisfy that, and then improve the performance of DC frequency-changeable compressor.Simultaneously, because the major and minor refrigerant through hole in rotor core coordinates the arrangement of magnetic V block groove and shaft hole, meet the requirement of rotor mechanical strength, also it is avoided that due to the problem of rotor main pole magnetic field magnetic line of force causes rotor-side magnetic resistance to significantly increase by refrigerant through hole formation closed-loop path, so as to increase rotor refrigerant flow area as much as possible on the premise of motor performance and reliability is ensured, promote the circulation of refrigerant in compressor, and reach the purpose of cooling rotor.
Description
Technical field
The utility model is related to motor and Compressor Technology field, more particularly to a kind of motor rotor, motor and
DC frequency-changeable compressor.
Background technology
Compressor is the core devices of the electrical equipment such as air-conditioning, refrigerator, and compressor majority is driven by motor, is had
There is larger energy input.With the progress of society and the continuous sternnessization of Energy situation, related industry is endeavoured more and more
In some energy-saving products of release.In recent years, DC Frequency Conversion Technology turns into one of leading technology of refrigeration industry, together
When, permasyn morot also turns into the first choice of electric motor for compressor.
DC frequency-changeable compressor is made up of with permasyn morot stator and rotor, and stator is affixed in compressor,
And the rotor in compressor has permanent magnet, the parts such as piston are driven to carry out the compressed of refrigerant using the design of eccentrically weighted shaft
Journey.
As shown in figure 1, existing DC frequency-changeable compressor generally includes rotor with built-in permanent magnetic synchronous electric motor rotor
Iron core 101, the embedded permanent magnet 102 being fixed in rotor core 101 and for fixed rotor iron core 101 and other zero
The rivet 103 of part, rotor core 101 is provided centrally with for the shaft hole 105 through eccentrically weighted shaft, in rotor core 101
It is additionally provided with the multiple refrigerant through holes 104 being circumferentially arranged along rotor core 101.Wherein, permanent magnet 102 is usually orthogonal to rotor iron
The diametric(al) of the heart 101 is placed, and the modes of emplacement make it that the dosage of permanent magnet 102 is few, it is difficult to accomplishes minimizing, efficiently for motor
Change.
Utility model content
The purpose of this utility model is to provide a kind of motor rotor, motor and DC frequency-changeable compressor, Neng Gouti
High motor torque density, meet motor high efficiency, small form factor requirements, and then improve the performance of DC frequency-changeable compressor.
To solve the above problems, the utility model proposes a kind of motor rotor, the rotor core of the motor rotor
Be provided centrally with for the shaft hole through rotating shaft, be additionally provided with magnet in the periphery of the shaft hole in the rotor core
Groove, rivet hole, secondary refrigerant through hole and main refrigerant through hole, the V-shaped structure of magnet groove, for embedded fixed installation permanent magnetism
Body, the pole polarity for the permanent magnet placed in adjacent magnetic V block groove are opposite；The secondary refrigerant through hole is arranged on the V-type magnetic
Between metal trough and the shaft hole；The main refrigerant through hole is arranged between adjacent magnetic V block groove.
Further, a V-type permanent magnet, or two sections of straight lines of each magnetic V block groove are placed in each magnetic V block groove
One section of linear pattern permanent magnet is respectively put in groove, and two sections of linear pattern permanent magnets are placed according to pole polarity identical mode.
Further, the main refrigerant through hole and secondary refrigerant through hole are shaped as circle, ellipse, arc, the arc with line segment
Shape or rectangle.
Further, the line for defining the outermost end of the shaft hole center to the main refrigerant through hole radially is L1,
Length is d；The line for defining drift angle of the shaft hole center to the magnetic V block groove close to the shaft hole is L2, line segment
L1 and line segment L2 angle is α；Define two drift angles of the shaft hole center to the magnetic V block groove close to the shaft hole
Between the distance of line be b, and meet:
Wherein p is the number of pole-pairs of motor.
Further, it is communicated with one on the outside of at least one radial direction of main refrigerant through hole along the rotor core
Oil return through-hole.
Further, the shape of the oil return through-hole is semicircle, semiellipse, arc, arc or rectangle with line segment.
Further, length d of the oil return through-hole in the rotor core circumference1Meet d1≤d3/ 2, the oil return
Length d of the through hole in rotor core radially2Meet d2≥d3/ 16, wherein d3Refrigerant through hole for oil return through-hole connection exists
Length in the rotor core circumference.
Further, the rotor core includes the rotor punching of same shape, and is built up by the rotor punching.
The utility model also provides a kind of motor, including stator and above-mentioned motor rotor, and the motor turns
Son is arranged in the stator by rotating shaft and rotated.
The utility model also provides a kind of DC frequency-changeable compressor, including above-mentioned motor.
Compared with prior art, motor rotor of the present utility model, motor and DC frequency-changeable compressor, due to turning
Magnetic V block groove is provided that on sub- iron core, the dosage of embedded permanent magnet is significantly improved, so as to improve motor torque
Density, motor high efficiency, small form factor requirements are disclosure satisfy that, and then improve the performance of DC frequency-changeable compressor.Simultaneously as turn
Major and minor refrigerant through hole on sub- iron core coordinates the arrangement of magnetic V block groove and shaft hole, meets wanting for rotor mechanical strength
Ask, moreover it is possible to avoid causing rotor-side magnetic resistance obvious because the rotor main pole magnetic field magnetic line of force forms closed-loop path by refrigerant through hole
The problem of increase, so as to increase the through-flow face of rotor refrigerant as much as possible on the premise of motor performance and reliability is ensured
Product, promotes the circulation of refrigerant in compressor, and reaches the purpose of cooling rotor.
Brief description of the drawings
Fig. 1 is the structural representation of existing DC frequency-changeable compressor built-in permanent magnetic synchronous electric motor rotor；
Fig. 2 is the structural representation of motor rotor of the present utility model.
Embodiment
To become apparent the purpose of this utility model, feature, below in conjunction with the accompanying drawings to of the present utility model specific real
The mode of applying is further described, however, the utility model can use different form to realize, should not be confined to described in
Embodiment.
Fig. 2 is refer to, the utility model provides a kind of motor rotor, in the rotor core 2 of the motor rotor
The heart is provided with for the shaft hole through rotating shaft 1, is additionally provided with the rotor core 2 in the periphery of the shaft hole for embedding
Enter permanent magnet 4 is fixedly mounted in formula magnet groove 3, the rivet hole for placing rivet 5, secondary refrigerant through hole 6 and main refrigerant through hole 7,
Permanent magnet 4 can use neodymium iron boron or Ferrite Material, and rotor core 2 includes the rotor punching of same shape, and by described turn
Sub- punching is by folded riveting or is welded to form, and is connected by rivet 5 with other parts of motor rotor.It is of the present utility model
Motor rotor is placed in corresponding stator by rotating shaft 1 and rotated, to form electric motor assembly.
Wherein, the magnet groove 3 is magnetic V block groove, i.e. 3 V-shaped structure of magnet groove, is placed in adjacent magnetic V block groove 3
Permanent magnet 4 pole polarity on the contrary, a V-type permanent magnet 4 can be placed in each magnetic V block groove 3, can also be in each V
One section of linear pattern permanent magnet 4 is respectively put in two sections of straight-line grooves of type magnet groove 3, and two sections of linear pattern permanent magnets 4 are according to pole polarity
Identical mode is placed.In the present embodiment, the vertex of each magnetic V block groove 3 is not close to the edge at the shaft hole center
Continuously, the edge at the remote shaft hole center is continuous, and each in two sections of straight-line grooves of each magnetic V block groove 3
One section of linear pattern permanent magnet 4 is put, and the pole polarity of two sections of linear pattern permanent magnets 4 is identical, leans against the top of magnetic V block groove 3 respectively
Jut at angle on the edge at the shaft hole center, so as to avoid colliding, and puts in adjacent magnetic V block groove 3
The pole polarity for the permanent magnet 4 put is then opposite.The secondary refrigerant through hole 6 is arranged on corresponding magnetic V block groove 3 and the shaft hole
Between；The main refrigerant through hole 7 is arranged between adjacent magnetic V block groove 3.Preferably, all magnetic V block grooves 3 with it is described
A secondary refrigerant through hole 6 is equipped between shaft hole, being equipped with a main refrigerant between the adjacent magnetic V block groove 3 of each two leads to
Hole 7, and all main refrigerant through holes 7 and secondary refrigerant through hole 6 are circular port, thus all main refrigerant through holes 7 and secondary refrigerant
Through hole 6 alternately along the circumferential array of rotor core 2, thus increases refrigerant flow area.In other embodiment of the present utility model
In, main refrigerant through hole 7 and secondary refrigerant through hole 6 can be other shapes, such as arc, can not all magnetic V block grooves 3 with
A secondary refrigerant through hole 6 is equipped between the shaft hole, can not also be all provided between the adjacent magnetic V block groove 3 of each two
There is a main refrigerant through hole 7.
The line for defining outermost end of the shaft hole center to main refrigerant through hole 7 radially is L1, length d；Define rotating shaft
The line of drift angle of the hole center to the magnetic V block groove 3 close to the shaft hole (i.e. to magnetic V block groove 3 place by shaft hole center
The line of end points of the part of permanent magnet 4 at shaft hole) it is that L2, line segment L1 and line segment L2 angle is α；Define the rotating shaft
Hole center to distance (the i.e. shaft hole center to V-type magnetic of magnetic V block groove line between two drift angles of the shaft hole
Metal trough 3 places the distance at two end point connecting line center of the part of permanent magnet 4 at shaft hole) it is b, and meet:
Wherein p is the number of pole-pairs of motor.
Motor rotor of the present utility model, due to being provided that magnetic V block groove in rotor core, embedded permanent magnet
Dosage is significantly improved, and so as to improve motor torque density, meets motor high efficiency, small form factor requirements.Meanwhile its
The arrangement of major and minor refrigerant through hole, meets the requirement of rotor mechanical strength, moreover it is possible to avoids the occurrence of rotor main pole magnetic field magnetic force
Line forms closed-loop path by refrigerant through hole causes the situation that rotor-side magnetic resistance significantly increases, so as to ensure motor
Increase rotor refrigerant flow area on the premise of energy and reliability as much as possible, promote the circulation of refrigerant in compressor, and reach
Cool down the purpose of rotor.
In addition, the outside point of radial direction of at least one main refrigerant through hole 7 along rotor core 2 in rotor core 2
The oil return through-hole 8 that She Zhi do not connected with the main refrigerant through hole 7, the shape of oil return through-hole 8 is semicircle, semiellipse, arc, band line
The arc or rectangle of section, length d of the oil return through-hole 8 in the circumference of rotor core 21Meet d1≤d3/ 2, oil return through-hole 8 is turning
2 length d radially of sub- iron core2Meet d2≥d3/ 16, wherein d3For oil return through-hole 8 connect refrigerant through hole 7 in rotor core 2
Length in circumference.
Due to being provided with the oil return through-hole 8 of connection refrigerant through hole 7 in rotor core 2, can cause cold when rotor rotates
In matchmaker's through hole 7 partly atomized and the refrigerator oil that is dissolved in cold media gas be thrown in the presence of radial load at oil return through-hole 8
And fallen after rise along oil return through-hole 8, the refrigerator oil for being brought into motor top is reduced, so as to reduce compressor oil yield, ensures pump
The lubricity of body.
The utility model also provides a kind of motor, including stator and above-mentioned motor rotor, and the motor turns
Son is arranged in the stator by rotating shaft 1 and rotated.The motor is due to close using the motor rotor, motor torque
Degree significantly improves, and disclosure satisfy that efficient, small form factor requirements.
The utility model also provides a kind of DC frequency-changeable compressor, including above-mentioned motor.The DC frequency-changing compression
Machine is due to using the motor, thus performance greatly improves.
In an application implementation, motor number of pole-pairs p=3, under same rotor diameter, using magnetic V block slot structure
Motor rotor, the motor rotor placed compared to the orthogonal root diameter of existing permanent magnet, its permanent magnet dosage improves
14.7%, so as to reduce revolution electric current, improve motor efficiency.Meanwhile refrigerant through hole carries out cloth in the way of Fig. 2
Put, L1 length d=23.8mm, L1 and L2 angle α=0.46rad, distance b=24.8mm, and meet:
Now rotor mechanical strength disclosure satisfy that requirement, while avoids rotor-side magnetic resistance and significantly increase, so as to ensure
On the premise of motor performance and reliability, rotor refrigerant flow area is increased, when it is applied in DC frequency-changeable compressor
When, the circulation of refrigerant in compressor can be obviously promoted, and reached the purpose of cooling rotor.
Obviously, it is new without departing from this practicality can to carry out various changes and modification to utility model by those skilled in the art
The spirit and scope of type.So, if these modifications and variations of the present utility model belong to the utility model claims and its
Within the scope of equivalent technologies, then the utility model is also intended to comprising including these changes and modification.
Claims (10)
- A kind of 1. motor rotor, it is characterised in that the rotor core of the motor rotor be provided centrally be used for through The shaft hole of rotating shaft, magnet groove, rivet hole, secondary refrigerant through hole are additionally provided with the periphery of the shaft hole in the rotor core With main refrigerant through hole, the V-shaped structure of magnet groove, for embedded fixed installation permanent magnet, put in adjacent magnetic V block groove The pole polarity for the permanent magnet put is opposite；The secondary refrigerant through hole is arranged between the magnetic V block groove and the shaft hole；Institute Main refrigerant through hole is stated to be arranged between adjacent magnetic V block groove.
- 2. motor rotor as claimed in claim 1, it is characterised in that place a V-type permanent magnetism in each magnetic V block groove Respectively put one section of linear pattern permanent magnet in body, or two sections of straight-line grooves of each magnetic V block groove, and two sections of linear pattern permanent magnets according to Pole polarity identical mode is placed.
- 3. motor rotor as claimed in claim 1, it is characterised in that the shape of the main refrigerant through hole and secondary refrigerant through hole For circle, ellipse, arc, arc or rectangle with line segment.
- 4. the motor rotor as described in claim 1 or 3, it is characterised in that it is cold to the master to define the shaft hole center The line of the outermost end of matchmaker's through hole radially is L1, length d；It is close to the magnetic V block groove to define the shaft hole center The line of the drift angle of the shaft hole is that L2, line segment L1 and line segment L2 angle are α；The shaft hole center is defined to the V Type magnet groove distance of line between two drift angles of the shaft hole is b, and is met:Wherein p is the number of pole-pairs of motor.
- 5. motor rotor as claimed in claim 1, it is characterised in that at least one main refrigerant through hole is along the rotor iron An oil return through-hole is communicated with the outside of the radial direction of the heart.
- 6. motor rotor as claimed in claim 5, it is characterised in that the shape of the oil return through-hole be semicircle, semiellipse, Arc, arc or rectangle with line segment.
- 7. motor rotor as claimed in claim 5, it is characterised in that the oil return through-hole is in the rotor core circumference Length d1Meet d1≤d3/ 2, length d of the oil return through-hole in rotor core radially2Meet d2≥d3/ 16, wherein d3For Length of the refrigerant through hole of the oil return through-hole connection in the rotor core circumference.
- 8. motor rotor as claimed in claim 1, it is characterised in that the rotor that the rotor core includes same shape rushes Piece, and built up by the rotor punching.
- A kind of 9. motor, it is characterised in that including the motor rotor any one of stator and claim 1 to 8, The motor rotor is arranged in the stator by rotating shaft and rotated.
- 10. a kind of DC frequency-changeable compressor, it is characterised in that including the motor described in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720728379.7U CN206948060U (en) | 2017-06-21 | 2017-06-21 | Motor rotor, motor and DC frequency-changeable compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720728379.7U CN206948060U (en) | 2017-06-21 | 2017-06-21 | Motor rotor, motor and DC frequency-changeable compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206948060U true CN206948060U (en) | 2018-01-30 |
Family
ID=61364176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720728379.7U Active CN206948060U (en) | 2017-06-21 | 2017-06-21 | Motor rotor, motor and DC frequency-changeable compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206948060U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109104011A (en) * | 2017-06-21 | 2018-12-28 | 上海海立电器有限公司 | Motor rotor, motor and DC frequency-changeable compressor |
-
2017
- 2017-06-21 CN CN201720728379.7U patent/CN206948060U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109104011A (en) * | 2017-06-21 | 2018-12-28 | 上海海立电器有限公司 | Motor rotor, motor and DC frequency-changeable compressor |
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