CN109026616A - A kind of compressor drum and the compressor comprising it - Google Patents
A kind of compressor drum and the compressor comprising it Download PDFInfo
- Publication number
- CN109026616A CN109026616A CN201811141289.3A CN201811141289A CN109026616A CN 109026616 A CN109026616 A CN 109026616A CN 201811141289 A CN201811141289 A CN 201811141289A CN 109026616 A CN109026616 A CN 109026616A
- Authority
- CN
- China
- Prior art keywords
- rotor core
- top ring
- compressor
- circulation
- compressor drum
- Prior art date
- 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.)
- Granted
Links
- 239000003507 refrigerant Substances 0.000 claims abstract description 38
- 230000002093 peripheral effect Effects 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 5
- 241000883990 Flabellum Species 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000004512 die casting Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000010725 compressor oil Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Compressor (AREA)
Abstract
The present invention relates to Compressor Technology fields, specifically, it is related to a kind of compressor drum and the compressor comprising it, a kind of compressor drum, including rotor core, the rotor core are provided with the recirculation hole for refrigerant circulation, one end of the rotor core is provided with lower loop, the other end of the rotor core is connected with the flow-guiding structure for guiding the refrigerant to be discharged from the rotor radial direction, can accelerate the speed that refrigerant flows through rotor, increases refrigerant circulation.
Description
Technical field
The present invention relates to Compressor Technology fields, in particular to a kind of compressor drum and include its compressor.
Background technique
The current motor on invariable frequency compressor is induction machine, and rotor generallys use cast aluminum construction, cast aluminium part
Closure cage modle conductor is formed, induced current is generated in alternating magnetic field, forms rotor field, interacts and drives with stator field
Motor operating.Its conductor aluminium cage can regard three parts as, top ring, aluminum strip, lower loop, and integrated die-casting forms when production.
High pressure refrigerant after compressor pump compression is logical by air gap between stator trimming, stator and rotor or rotor
Compressor is discharged in discharge orifice etc. upwards.Existing cast-aluminum rotor structure adds generally on the outside of rotor core axis hole according to the through-flow needs of refrigerant
The uniformly distributed recirculation hole of a circle is opened, for increasing refrigerant circulation area.But because rotor can be used for opening up the limited area of through flow hole,
Increased through-flow effect is unobvious, reduces compressor efficiency.
Summary of the invention
The purpose of the present invention is to provide a kind of compressor drum and comprising its compressor, refrigerant can be accelerated and flowed through
The speed of rotor increases refrigerant circulation, increases compressor oil return effect.
The embodiment of the present invention is achieved in that
A kind of compressor drum, including rotor core, the rotor core are provided with the recirculation hole for refrigerant circulation, institute
The one end for stating rotor core is connected with flow-guiding structure for guiding the refrigerant to be discharged from the radial direction of the rotor core.
Further, in the preferred embodiment, flow-guiding structure is unlimited determines shape, structure, can be by certainly
Refrigerant is discharged from the peripheral side of rotor core for body structure guiding refrigerant, and when rotor core rotates, flow-guiding structure follows rotation, leads
Flow structure plays the role of centrifugal flabellum, and refrigerant obtains the centrifugal force towards rotor outer periphery side, accelerates when flowing through flow-guiding structure
Refrigerant circulation.
Preferably, the peripheral side of above-mentioned flow-guiding structure towards the rotor core offers one or more and the circulation
The circulation road of hole connection, the circulation road circulate for refrigerant.
Preferably, the side that above-mentioned flow-guiding structure is connect with the rotor core is provided with stomidium, and the stomidium covers institute
The axis hole of recirculation hole and rotor core is stated, the circulation road is connected to the stomidium.
Preferably, above-mentioned flow-guiding structure is connect with the end face seal of the rotor core, further, rotor core with it is upper
End ring integrated die-casting forms.
Preferably, the edge of the rotor core side is provided with flange, the flange around the flow-guiding structure
It is dug backwards to the rotor core.
Preferably, above-mentioned flow-guiding structure includes top ring, and the axis hole of the recirculation hole and the rotor core is located at described
In the annular distance of top ring；
Described top ring one end is connect with the end part seal of the rotor core, and the other end of the top ring offers one
Item or a plurality of circulation groove, one end of the circulation groove are connected to the annular distance of the top ring, and the other end of the circulation groove is connected to institute
State the peripheral side of top ring.
Preferably, above-mentioned flow-guiding structure further includes baffle, and the baffle offers one end of circulation groove with the top ring
It is tightly connected, further, top ring is provided with boss, and baffle plate setting has the riveting hole with boss cooperation, top ring
It is riveted with baffle.
Baffle covers circulation groove, and circulation groove forms circulation passage, and circulation groove increases the adsorption plane of refrigeration oil in compressor
Product, improves the oil return effect of compressor.
Preferably, above-mentioned circulation groove is provided with the end that the top ring is arranged in multiple and equal circumference, the circulation groove
For arc groove.
Preferably, above-mentioned top ring is column structure, and the baffle is circular baffle plate, and the profile around the baffle is arranged
There is flange, the flange is dug backwards to the rotor core side.
Preferably, above-mentioned circulation groove is arc groove, and the arc groove includes the first arc side and the second arc side, first arc
The axle center for extending past the rotor core 1 on side and diameter are greater than the half of the top ring outer diameter；
Second arc side is less than the first arc side and greater than the half of the top ring outer diameter.
A kind of compressor, including foregoing rotor, rotor are provided with one end of flow-guiding structure towards the exhaust outlet of compressor.
The beneficial effect of the embodiment of the present invention is:
By increasing flow-guiding structure in the end of rotor core, refrigerant is discharged from the peripheral side of rotor core, changes
The circulation path of refrigerant, flow-guiding structure follow rotor core to rotate, and provide certain centrifugal force for the refrigerant of circulation, accelerate
Refrigerant flows through the speed of rotor, increases the circulation of refrigerant, while improving the oil return effect of compressor.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is structural schematic diagram of the embodiment of the present invention；
Fig. 2 is rotor core structure schematic diagram of the present invention；
Fig. 3 is top ring structural schematic diagram of the present invention；
Fig. 4 is baffle arrangement schematic diagram of the present invention.
Icon: 1- rotor core；2- recirculation hole；3- flow-guiding structure；31- top ring；32- baffle；311- circulation
Slot；The first arc side of 312-；The second arc side of 313-；321- flange.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, or be somebody's turn to do
Invention product using when the orientation or positional relationship usually put, be merely for convenience of description of the present invention and simplification of the description, without
It is that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore not
It can be interpreted as limitation of the present invention.In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, and cannot manage
Solution is indication or suggestion relative importance.
In addition, the terms such as term "horizontal", "vertical" are not offered as requiring component abswolute level or pendency, but can be slightly
Low dip.It is not to indicate that the structure has been had to if "horizontal" only refers to that its direction is more horizontal with respect to for "vertical"
It is complete horizontal, but can be slightly tilted.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirect by intermediary
It is connected, can be the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
Embodiment 1:
Fig. 1 is please referred to, in conjunction with Fig. 2-4, the present embodiment provides a kind of compressor drum, including rotor core 1, rotor iron
The recirculation hole 2 of core 1 being provided with for refrigerant circulation, one end of rotor core 1 is connected with lower loop；Rotor core 1 it is another
End is connected with the flow-guiding structure 3 being discharged for guiding refrigerant from rotor core radial direction；Flow-guiding structure 3 and rotor core 1
End face seal connection；
The peripheral side of flow-guiding structure 3 towards rotor core 1 offers one or more circulation road being connected to recirculation hole 2,
Circulation road circulates for refrigerant；The side that flow-guiding structure 3 is connect with rotor core 1 is provided with stomidium, and stomidium does not extend through water conservancy diversion
Structure 3, stomidium cover the axis hole of recirculation hole 2 and rotor, and circulation road is connected to stomidium.
Flow-guiding structure 3 is connect with the end face seal of rotor core 1, and circulation road is connected to recirculation hole 2, the port connection of circulation road
The peripheral side of rotor core 1, when rotor core 1 rotates, flow-guiding structure 3 follows rotor core 1 to rotate, and circulation road is opposite
It being rotated in the axis of rotor core 1, flow-guiding structure 3 plays the role of centrifugal flabellum, accelerates the speed that refrigerant flows through rotor,
In the case where that can not further increase 1 refrigerant circulation area of rotor core, flow-guiding structure 3 is effectively increased refrigerant circulation
Amount, flow-guiding structure 3 increase the adsorption area of refrigerator oil in compressor, enhance the oil return effect of compressor.
The edge of rotor side is provided with flange 321 around flow-guiding structure 3, flange 321 is turned over backwards to rotor core 1
It rises.
When rotor is mounted in compressor, rotor core 1 is connected with one end of flow-guiding structure 3 towards the exhaust of compressor
Mouthful, flange 321 can be effectively prevented the refrigeration oil in compressor and throw away from the exhaust outlet of compressor.
In conjunction with Fig. 2-4, with reference to Fig. 1, rotor core 1 is cylindrical cast aluminium Lyu's basket structure, the bottom setting of rotor core 1
There is lower loop, there are five the gas vent settings of rotor core 1, and uniformly distributed around the axis hole of rotor core 1, and flow-guiding structure 3 is to set
The top ring 31 on 1 top of rotor core is set, 31 one end of top ring is connect with rotor end seal, and connection type can be riveting
It connects, be threadedly coupled, the axis hole of recirculation hole 2 and rotor core 1 is located in the annular distance of top ring 31, and the other end of top ring 31 opens up
There are six circulation grooves 311, the annular distance of one end connection top ring 31 of circulation groove 311, the other end of circulation groove 311 is connected to top ring
31 peripheral side；Flow-guiding structure 3 further includes baffle 32, and one end sealing that baffle 32 and top ring 31 offer circulation groove 311 connects
It connects, top ring 31 is provided with boss, and baffle 32 is provided with the riveting hole with boss cooperation, top ring 31 and 32 riveting of baffle
It connects, baffle 32 covers circulation groove 311, and circulation groove 311 forms circulation passage；
Top ring 31 is connect with the end face seal of rotor core 1, and baffle 32 and top ring 31 are tightly connected, and baffle 32 is closed
The axis hole of rotor core 1, refrigerant are only capable of being discharged out of circulation groove 311, when top ring 31 follows rotor core 1 to rotate, rise
The effect of centrifugal flabellum has been arrived, has pushed refrigerant to circulate the acceleration refrigerant of slot 311 by the speed of rotor core 1, improves cold
The circulation of matchmaker, circulation groove 311 increase the contact area of refrigeration oil and compressor, provide the oil return of compressor.
Circulation groove 311 is arc groove, and top ring 31 is column structure, and baffle 32 is circular baffle plate 32, the diameter of baffle 32
Less than the diameter of rotor, the profile of baffle 32 is provided with flange 321, flange 321 is dug backwards to rotor side, when rotor is pacified
When in compressor, turn over all over the exhaust outlet towards compressor, flange 321 effectively prevent the refrigeration oil in compressor from compressor
Exhaust outlet throw away.
Circulation groove 311 is arc groove, and arc groove includes the first arc side 312 and the second arc side 313, and the first arc side 312 is prolonged
It extends through the axle center of rotor core 1 and diameter is greater than the half of 31 outer diameter of top ring；Second arc side 313 is less than the first arc side 312
And it is greater than the half of 31 outer diameter of top ring.
A kind of compressor, including aforementioned compression machine rotor, rotor are provided with one end of flow-guiding structure 3 towards the row of compressor
Port, when compressor rotation, refrigerant passes through gas vent and 1 axis hole of rotor core towards 31 side of top ring from lower loop side
Circulation, the circulation groove 311 and cover board of top ring 31 form refrigerant circulation passage, when top ring 31 follows rotor core 1 to rotate,
Play the role of centrifugal flabellum, pushes the refrigerant slot 311 that circulates to accelerate speed of the refrigerant by rotor, improve refrigerant
Circulation, circulation groove 311 increase the contact area of refrigeration oil and compressor, provide the oil return of compressor.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (13)
1. a kind of compressor drum, including rotor core (1), the rotor core (1) is provided with the circulation for refrigerant circulation
Hole (2), it is characterised in that:
One end of the rotor core (1) is connected with for guiding the refrigerant to arrange from the radial direction of the rotor core (1)
Flow-guiding structure (3) out.
2. compressor drum according to claim 1, which is characterized in that the flow-guiding structure (3) is towards the rotor iron
The peripheral side of core (1) offers one or more circulation road being connected to the recirculation hole (2), and the circulation road is used for refrigerant stream
It is logical.
3. compressor drum according to claim 2, which is characterized in that the flow-guiding structure (3) and the rotor core
(1) side connected is provided with stomidium, and the stomidium covers the axis hole of recirculation hole (2) and rotor, the circulation road connection
The stomidium.
4. compressor drum according to claim 1, which is characterized in that the flow-guiding structure (3) and the rotor core
(1) end face seal connection.
5. compressor drum according to claim 1, which is characterized in that turn around the flow-guiding structure (3) backwards to described
The edge of sub- iron core (1) side is provided with flange (321), and the flange (321) is dug backwards to the rotor core (1).
6. compressor drum according to claim 1, which is characterized in that the flow-guiding structure (3) includes top ring (31),
The axis hole of the recirculation hole (2) and the rotor core (1) is located in the annular distance of the top ring (31)；
Described top ring (31) one end is connect with the end part seal of the rotor core (1), the other end of the top ring (31)
It offers one or more circulation groove (311), one end of the circulation groove (311) is connected to the annular distance of the top ring (31), institute
The other end for stating circulation groove (311) is connected to the peripheral side of the top ring (31).
7. compressor drum according to claim 6, which is characterized in that the flow-guiding structure (3) further includes baffle (32),
The baffle (32) connect with one end that the top ring (31) offers circulation groove (311).
8. compressor drum according to claim 6, which is characterized in that the circulation groove (311) is provided with multiple and waits
Circumference is arranged in the end of the top ring (31).
9. compressor drum according to claim 6, which is characterized in that the circulation groove (311) is arc groove.
10. compressor drum according to claim 7, which is characterized in that the baffle (32) offers riveting hole, described
Top ring (31) offers the boss with the riveting of riveting hole.
11. compressor drum according to claim 7, which is characterized in that the top ring (31) is column structure, described
Baffle (32) is circular baffle plate (32), and the profile around the baffle (32) is provided with flange (321), flange (321) back
It is dug to the side of the rotor core (1).
12. compressor drum according to claim 9, which is characterized in that the arc groove include the first arc side (312) and
Second arc side (313), the axle center for extending past the rotor core (1) of first arc side (312) and diameter are greater than described
The half of top ring (31) outer diameter；
Second arc side (313) is less than the first arc side (312) and greater than the half of the top ring (31) outer diameter.
13. a kind of compressor, which is characterized in that including compressor drum described in claim 1-12 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811141289.3A CN109026616B (en) | 2018-09-28 | 2018-09-28 | Compressor rotor and contain its compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811141289.3A CN109026616B (en) | 2018-09-28 | 2018-09-28 | Compressor rotor and contain its compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109026616A true CN109026616A (en) | 2018-12-18 |
| CN109026616B CN109026616B (en) | 2024-02-09 |
Family
ID=64615430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811141289.3A Active CN109026616B (en) | 2018-09-28 | 2018-09-28 | Compressor rotor and contain its compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109026616B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000161275A (en) * | 1998-11-25 | 2000-06-13 | Daikin Ind Ltd | Rotary compressor |
| CN102957234A (en) * | 2012-11-29 | 2013-03-06 | 广州万宝集团压缩机有限公司 | Motor rotor for refrigerator compressor |
| CN105782053A (en) * | 2014-12-24 | 2016-07-20 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor |
| CN106998109A (en) * | 2017-03-31 | 2017-08-01 | 广东美芝制冷设备有限公司 | Rotor assembly, motor and the compressor with it |
| CN208900322U (en) * | 2018-09-28 | 2019-05-24 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of compressor drum and the compressor comprising it |
-
2018
- 2018-09-28 CN CN201811141289.3A patent/CN109026616B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000161275A (en) * | 1998-11-25 | 2000-06-13 | Daikin Ind Ltd | Rotary compressor |
| CN102957234A (en) * | 2012-11-29 | 2013-03-06 | 广州万宝集团压缩机有限公司 | Motor rotor for refrigerator compressor |
| CN105782053A (en) * | 2014-12-24 | 2016-07-20 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor |
| CN106998109A (en) * | 2017-03-31 | 2017-08-01 | 广东美芝制冷设备有限公司 | Rotor assembly, motor and the compressor with it |
| CN208900322U (en) * | 2018-09-28 | 2019-05-24 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of compressor drum and the compressor comprising it |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109026616B (en) | 2024-02-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7942627B2 (en) | Axial fan unit | |
| EP2492513B1 (en) | Turbofan of air conditioning system | |
| KR102257480B1 (en) | Circular fan | |
| CN106663973A (en) | Direct drive-type turbo blower cooling structure | |
| US20110017427A1 (en) | Blower and heatpump using the same | |
| EP0846868A2 (en) | Centrifugal blower assembly | |
| TW201248017A (en) | Advection-type fan | |
| KR20120139727A (en) | Centrifugal blower assembly | |
| CN114278576B (en) | Integrated impeller deposit prevention water pump | |
| US20190010955A1 (en) | Fan Impeller and Fan Using Fan Impeller | |
| CN208900322U (en) | A kind of compressor drum and the compressor comprising it | |
| CN103573691A (en) | Pump impeller | |
| CN203867986U (en) | Shell assembly used for centrifugal fan, centrifugal fan and refrigeration equipment | |
| KR20190046601A (en) | Closed impeller with self-recirculating casing | |
| CN109026616A (en) | A kind of compressor drum and the compressor comprising it | |
| CN209072171U (en) | A kind of motor | |
| CN208804046U (en) | Centrifugal blower and range hood | |
| CN206686029U (en) | Impeller assembly, integrated motor and household electrical appliance | |
| CN201750290U (en) | Novel cooling-mode DC dust collector motor | |
| CN103452859B (en) | Disc-motor axial flow pump for cooling of transformer | |
| CN109662653A (en) | A kind of high speed cleaner motor | |
| KR100611011B1 (en) | Turbo-fan in an air harmonizing system | |
| JP2017089399A (en) | Centrifugal fan | |
| CN107040090A (en) | Impeller assembly, integrated motor and household electrical appliance | |
| CN108916112A (en) | A kind of fan with double split flow construction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |