CN105317678A - External rotor rotary compressor - Google Patents
External rotor rotary compressor Download PDFInfo
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- CN105317678A CN105317678A CN201410271490.9A CN201410271490A CN105317678A CN 105317678 A CN105317678 A CN 105317678A CN 201410271490 A CN201410271490 A CN 201410271490A CN 105317678 A CN105317678 A CN 105317678A
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- rotor
- stator
- rotary compressor
- external rotor
- end surface
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Abstract
The invention discloses an external rotor rotary compressor comprising: a shell body, a stator support, a stator, a rotor and a compression device. A chamber is formed in the shell body; the stator support is fixed in the chamber; the stator is fixed on the stator support; a stator coil is winded on the stator; the rotor is rotatably disposed on exterior of the stator in a sleeving manner; a magnet is embedded in the inner side, which is towards the stator, of the rotor; an upper end surface of the magnet is lower than the upper end surface of the stator; the compression device is arranged in the shell body; and the upper end of a crank shaft of the compression device is connected to the rotor. According to the external rotor rotary compressor in the embodiment, the upper end surface of the magnet of the rotor is lower than the upper end surface of the stator so that an axial electromagnetic force generated to the rotor is upward when the external rotor rotary compressor works, so that the axial force applied to the crank shaft by the rotor is reduced and further mechanical loss of the external rotor rotary compressor is reduced. The external rotor rotary compressor is improved in power consumption and is improved in reliability and performance.
Description
Technical field
The present invention relates to compressor field, especially relate to a kind of external rotor rotary compressor.
Background technique
The motor that rotary compressor is made up of rotor and stator usually drives, and in current routine techniques, motor mostly is embedded actuator.Embedded actuator is positioned at stator interior because of rotor, and motor volume is large, and compressor limited space, makes permanent magnet consumption limited, is unfavorable for improving motor efficiency.
In recent years, the feasibility that external rotor electric machine is applied to compressor obtains to be paid close attention to widely, and wherein, the rotor of external rotor electric machine is positioned at outside stator, and the compressor formed is external rotor rotary compressor.
Because in the structure of external rotor electric machine and prior art, inner rotor motor structure is completely different, the magnetic field produced between its stator and rotor is also variant.For ensureing the performance of compressor, the structure of external rotor electric machine needs to improve.
Summary of the invention
The present invention is intended at least solve the technical problem existed in prior art.For this reason, the object of the present invention is to provide a kind of external rotor rotary compressor, the performance of this external rotor rotary compressor can be guaranteed.
According to the external rotor rotary compressor of the embodiment of the present invention, comprising: housing, in described housing, there is chamber; Stator support, described stator support is fixed in described chamber; Stator, described stator is fixed on described stator support, and described stator is wound with stator coil; Rotor, described rotor is rotatably set in described stator exterior, and the inner side towards described magnet of described rotor is embedded with magnet, and the upper-end surface of described magnet is lower than the upper-end surface of described stator; And compression set, described compression set is located in described housing, and the upper end of the bent axle of described compression set is connected with described rotor.
According to the external rotor rotary compressor of the embodiment of the present invention, the upper-end surface lower than stator is arranged to by the upper-end surface of the magnet by rotor, thus make external rotor rotary compressor in the running, to rotor produce axial magnetic force direction upwards, thus the axial force making rotor be applied to bent axle reduces, and then reduce the mechanical loss of external rotor rotary compressor, improve the power consumption of external rotor rotary compressor, improve reliability and the performance of external rotor rotary compressor.
In addition, external rotor rotary compressor according to the present invention also can have following additional technical feature:
Particularly, the scope of the distance, delta H between the upper-end surface of described magnet and the upper-end surface of described stator is 0.1-0.8cm.
In specific embodiments more of the present invention, the lower end of the eccentric shaft of described bent axle is provided with thrust position, and the lower bearing of described compression set is only supported at described thrust position.Thus, the area of contact between bent axle and lower bearing can be increased, make thrust position can carry out axial limiting to bent axle, improve the ability to bear of bent axle, thus ensure external rotor rotary compressor maintainability further.
In some embodiments of the invention, the lower end of described rotor is provided with the thrust device given to lifting force.Thus reduce the axial force that rotor is applied to bent axle further, and then improve power consumption and the reliability of external rotor rotary compressor.
Alternatively, described thrust device is axial fan.Thus, thrust device structure is simple, and install easily, cost is low.
Particularly, described thrust device is fixedly connected with and synchronous rotary with described rotor.Thus making thrust device compact structure, cost is low.
Alternatively, described thrust device comprises two stator blades about rotating shaft center's symmetry of described rotor.
In one particular embodiment of the present invention, described rotor is formed as the cylindrical shape of open upper end.Thus, rotor structure is simple, easy processing.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 and Fig. 2 is longitudinal cross-sectional schematic of the compressor according to two embodiments of the present invention;
Fig. 3 is the enlarged view that Fig. 1 centre circle shows C portion;
Fig. 4 is the structural representation of the thrust device according to the embodiment of the present invention.
Reference character:
External rotor rotary compressor 100,
Housing 1, upper shell 11, middle shell 12, lower shell body 13, chamber 14,
Stator support 2, supporting drum 21, joint 22,
Motor 3, stator 31, rotor 32, magnet 33,
Compression set 4, bent axle 41, the sub-axle 413 of eccentric shaft the 411, first sub-axle 412, second, thrust position 414, cylinder 42, piston 43, upper bearing (metal) 44, lower bearing 45,
Thrust device 5, axial fan 51, stator blade 52,
Liquid-storage container 200.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " highly ", " on ", D score, " top ", " end ", " interior ", " outward ", " axis ", the orientation of the instruction such as " radial direction " or position relationship be based on orientation shown in the drawings or position relationship; be only the present invention for convenience of description and simplified characterization; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristics.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, except as otherwise noted, the implication of " multiple " is two or more.
In describing the invention, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
Below with reference to Fig. 1-Fig. 4, the external rotor rotary compressor 100 according to the embodiment of the present invention is described.
According to the external rotor rotary compressor 100 of the embodiment of the present invention, as depicted in figs. 1 and 2, comprising: housing 1, stator support 2, motor 3 and compression set 4.Wherein, motor 3 comprises stator 31 and rotor 32.
Particularly, have chamber 14 in housing 1, housing 1 is seal container.Wherein, the structure of housing 1 can adopt the shell construction of compressor disclosed in prior art, does not do concrete restriction here.Such as in the example shown in Fig. 1 and Fig. 2, housing 1 comprises upper shell 11, lower shell body 13 and middle shell 12, middle shell 12 is formed as the cylinder hull shape of upper and lower both ends open, upper shell 11 be formed as plectane part and the outward edge of upper shell 11 to downward-extension, lower shell body 13 is formed as recessed curved panel downwards, upper shell 11 and lower shell body 13 are fastened on the two ends up and down of middle shell 12 respectively, and upper shell 11, lower shell body 13 and middle shell 12 limit chamber 14.
See figures.1.and.2, stator support 2 is fixed in chamber 14, stator 31 is fixed on stator support 2, stator 31 is wound with stator coil (as copper cash), it is outside that rotor 32 is rotatably set in stator 31, the inner side towards stator 31 of rotor 32 is embedded with magnet 33, and the upper-end surface of magnet 33 is lower than the upper-end surface of stator 31.Compression set 4 is located in housing 1, and the upper end of the bent axle 41 of compression set 4 is connected with rotor 32.
In examples more of the present invention, as depicted in figs. 1 and 2, stator support 2 comprises supporting drum 21 and joint 22, and wherein stator 31 is set on the outer wall of supporting drum 21, and joint 22 radially stretches out from the top of supporting drum 21.It should be noted that, radial direction refers to direction shown in arrow A in Fig. 1.Alternatively, stator support 2 is formed as solid of rotation, and the longitudinal section of stator support 2 is formed as two symmetrical " 7 " shapes, and the outward edge of joint 22 is connected on the inner circle wall of housing 1.Certainly, stator support 2 also can be formed as other shapes, as long as stator 31 can be fixed in chamber 14 by stator support 2, does not do concrete restriction here.
Particularly, stator 31 is formed as the cylinder hull shape of upper and lower both ends open, the open top of rotor 32 and being enclosed within outward on stator 31.
In examples more of the present invention, as depicted in figs. 1 and 2, compression set 4 comprises cylinder 42, piston 43, upper bearing (metal) 44, lower bearing 45, bent axle 41 etc.Upper bearing (metal) 44 and lower bearing 45 are fixed in chamber 14 at interval, and cylinder 42 is located between upper bearing (metal) 44 and lower bearing 45, and piston 43 is located in cylinder 42.Bent axle 41 comprises the first sub-axle 412, second sub-axle 413 and eccentric shaft 411, and eccentric shaft 411 is connected with piston 43.
The two ends of bent axle 41 are stretched out in cylinder 42, and bent axle 41 coordinates with upper bearing (metal) 44 and lower bearing 45 respectively with fixing, and the upper end of bent axle 41 stretches out to be connected with rotor 32 in upper bearing (metal) 44.
Particularly, as depicted in figs. 1 and 2, external rotor rotary compressor 100 is connected with liquid-storage container 200, and gaseous coolant can transfer in the cylinder 42 of compression set 4 by liquid-storage container 200.It should be noted that, stator coil, magnet 33, cylinder 42, piston 43, upper bearing (metal) 44, lower bearing 45 and bent axle 41 etc. all can adopt the structure of the respective element of compressor in prior art, the structure of liquid-storage container 200 is also prior art, is not described specifically here.
Produce magnetic field after motor 3 starts, magnetic field produces electromagnetic force to rotor 32 and rotates to drive rotor 32, and rotor 32 can be with dynamic crankshaft 41 to rotate after rotating.In the process that bent axle 41 rotates, the eccentric shaft 411 of bent axle 41 drives piston 43 eccentric rotary, and the empty cavity position between piston 43 and cylinder 42 is also changed thereupon, thus carries out compression formation pressurized gas to gaseous coolant.
It should be noted that, also axial electromagnetic force is comprised in the electromagnetic force that magnetic field produces rotor 32, and amass the thick stator that is less than according to the rotor of the embodiment of the present invention and amass thick, that is, the upper-end surface of the magnet 33 on rotor 32 lower than the upper-end surface of stator 31, thus makes axial magnetic force direction that magnetic field produces rotor 32 upwards.Here, the principle of electromagnetic force that motor 3 produces rotor 32 has in the running been prior art, is not described in detail here.
Because rotor 32 is located at the upper end of bent axle 41, therefore the gravity of rotor 32 is applied on bent axle 41, and therefore, upper bearing (metal) 44, lower bearing 45 need with the surface of contact of bent axle 41 gravity simultaneously bearing bent axle 41 and roller 32.Upwards, thus the axial force making rotor 32 be applied to bent axle 41 reduces the axial magnetic force direction produced rotor 32 in the running due to motor 3, and the frictional force between bent axle 41 and upper bearing (metal) 44, lower bearing 45 reduces.Thus, the mechanical loss of external rotor rotary compressor 100 can be reduced, improve the power consumption of external rotor rotary compressor 100, improve the reliability of external rotor rotary compressor 100.
According to the external rotor rotary compressor 100 of the embodiment of the present invention, the upper-end surface lower than stator 31 is arranged to by the upper-end surface of the magnet 33 by rotor 32, thus make external rotor rotary compressor 100 in the running, to rotor 32 produce axial magnetic force direction upwards, thus the axial force making rotor 32 be applied to bent axle 41 reduces, and then reduce the mechanical loss of external rotor rotary compressor 100, improve the power consumption of external rotor rotary compressor 100, improve reliability and the performance of external rotor rotary compressor 100.
In some embodiments of the invention, the scope of the distance, delta H between the upper-end surface of magnet 33 and the upper-end surface of stator 31 is 0.1-0.8cm.
In specific embodiments more of the present invention, as shown in figures 1 and 3, the lower end of the eccentric shaft 411 of bent axle 41 is provided with thrust position 414, and thrust position 414 only compresses the lower bearing 45 of compression apparatus 4.That is, thrust position 414 has thrust function, thus, the area of contact between bent axle 41 and lower bearing 45 can be increased, make thrust position 414 can carry out axial limiting to bent axle 41, improve the ability to bear of bent axle 41, thus ensure external rotor rotary compressor 100 maintainability further.Here, axial direction refers to direction shown in arrow B in Fig. 1.
In the example depicted in fig. 3, first sub-axle 412 is from the lower surface of eccentric shaft 411 to downward-extension, second sub-axle 413 is from the lower surface of the first sub-axle 412 to downward-extension, second sub-axle 413 stretches in lower bearing 45 to coordinate with lower bearing 45, the end face towards the second sub-axle 413 of the first sub-axle 412 is only against on the upper-end surface of lower bearing 45, that is, first sub-axle 412 with between lower bearing 45 for face contacts, the end face towards the second sub-axle 413 of the first sub-axle 412 is the shaft shoulder of bent axle 41, the end face towards the second sub-axle 413 of the first sub-axle 412 constitutes the thrust position 414 of bent axle 41.
Certainly, the present invention is not limited thereto, such as, external rotor rotary compressor 100 also can comprise thrust-bearing (scheming not shown), thrust-bearing can be fixed in chamber 14 and to be enclosed within bent axle 41 outward, wherein, bent axle 41 also can form the thrust position 414 of bent axle 41 with the contact segment of thrust-bearing.
In specific embodiments more of the present invention, as depicted in figs. 1 and 2, rotor 32 is formed as the cylindrical shape of open upper end, and that is, the longitudinal section of rotor 32 is formed as " U " shape.Thus, rotor 32 structure is simple, easy processing.
Alternatively, the upper-end surface of upper bearing (metal) 44 is provided with exhaust port, in cylinder 42, the high pressure refrigerant gas of compression is discharged from exhaust port, thus make the high pressure refrigerant gas of discharging can impact the lower surface of rotor 32, to produce active force upwards to rotor 32, thus, can reduce motor 3 in the running rotor 32 be applied to the axial force of bent axle 41.
In some embodiments of the invention, as shown in Figure 2, the lower end of rotor 32 is provided with the thrust device 5 given to lifting force, thus reduce the axial force that rotor 32 is applied to bent axle 41 further, reduce the stressed of thrust position 414, and then improve power consumption and the reliability of external rotor rotary compressor 100.Alternatively, thrust device 5 is axial fan 51.Thus, thrust device 5 structure is simple, and install easily, cost is low.Further alternatively, as shown in Figure 2 and Figure 4, thrust device 5 comprises two stator blades 52 about rotating shaft center's symmetry of rotor 32.
Particularly, thrust device 5 is fixedly connected with and synchronous rotary with rotor 32, and that is, thrust device 5 does not have independently driver, and thrust device 5 is driven to produce thrust by rotor 32, thus makes thrust device 5 compact structure, and cost is low.
Certainly, thrust device 5 is also not limited thereto, and such as thrust device 5 can be the turbine groove on the diapire being formed in rotor 32, and the import of turbine groove is positioned on the sidewall of rotor 32, and the outlet of turbine groove is located on the diapire of rotor 32.When rotated, gas is from import entrained vortex race, and the gas in turbine groove is from outlet blowout, and the gas of blowout rebounds to rotor 32 after meeting with obstruction, thus produces thrust upwards to rotor 32 for rotor 32.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (8)
1. an external rotor rotary compressor, is characterized in that, comprising:
Housing, has chamber in described housing;
Stator support, described stator support is fixed in described chamber;
Stator, described stator is fixed on described stator support, and described stator is wound with stator coil;
Rotor, described rotor is rotatably set in described stator exterior, and the inner side towards described stator of described rotor is embedded with magnet, and the upper-end surface of described magnet is lower than the upper-end surface of described stator; And
Compression set, described compression set is located in described housing, and the upper end of the bent axle of described compression set is connected with described rotor.
2. external rotor rotary compressor according to claim 1, is characterized in that, the scope of the distance, delta H between the upper-end surface of described magnet and the upper-end surface of described stator is 0.1-0.8cm.
3. external rotor rotary compressor according to claim 1, is characterized in that, the lower end of the eccentric shaft of described bent axle is provided with thrust position, and the lower bearing of described compression set is only supported at described thrust position.
4. the external rotor rotary compressor according to any one of claim 1-3, is characterized in that, the lower end of described rotor is provided with the thrust device given to lifting force.
5. external rotor rotary compressor according to claim 4, is characterized in that, described thrust device is axial fan.
6. external rotor rotary compressor according to claim 5, is characterized in that, described thrust device is fixedly connected with and synchronous rotary with described rotor.
7. external rotor rotary compressor according to claim 6, is characterized in that, described thrust device comprises two stator blades about rotating shaft center's symmetry of described rotor.
8. external rotor rotary compressor according to claim 1, is characterized in that, described rotor is formed as the cylindrical shape of open upper end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410271490.9A CN105317678B (en) | 2014-06-17 | 2014-06-17 | Outer rotor rotary compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410271490.9A CN105317678B (en) | 2014-06-17 | 2014-06-17 | Outer rotor rotary compressor |
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| CN105317678A true CN105317678A (en) | 2016-02-10 |
| CN105317678B CN105317678B (en) | 2018-01-12 |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105673508A (en) * | 2014-11-18 | 2016-06-15 | 上海日立电器有限公司 | Rolling rotor type compressor |
| CN105909524A (en) * | 2016-06-01 | 2016-08-31 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor |
| CN105952647A (en) * | 2016-06-20 | 2016-09-21 | 广东美芝制冷设备有限公司 | Rotary compressor |
| CN107542667A (en) * | 2017-10-16 | 2018-01-05 | 瑞智(青岛)精密机电有限公司 | A kind of external-rotor-type high energy efficiency, the Rotary Compressor of low noise |
| US20180066657A1 (en) * | 2016-09-08 | 2018-03-08 | Emerson Climate Technologies, Inc. | Compressor |
| WO2018049057A1 (en) * | 2016-09-08 | 2018-03-15 | Emerson Climate Technologies, Inc. | Compressor |
| US10323638B2 (en) | 2015-03-19 | 2019-06-18 | Emerson Climate Technologies, Inc. | Variable volume ratio compressor |
| US10495086B2 (en) | 2012-11-15 | 2019-12-03 | Emerson Climate Technologies, Inc. | Compressor valve system and assembly |
| US10598180B2 (en) | 2015-07-01 | 2020-03-24 | Emerson Climate Technologies, Inc. | Compressor with thermally-responsive injector |
| US10753352B2 (en) | 2017-02-07 | 2020-08-25 | Emerson Climate Technologies, Inc. | Compressor discharge valve assembly |
| US10907633B2 (en) | 2012-11-15 | 2021-02-02 | Emerson Climate Technologies, Inc. | Scroll compressor having hub plate |
| US10954940B2 (en) | 2009-04-07 | 2021-03-23 | Emerson Climate Technologies, Inc. | Compressor having capacity modulation assembly |
| US10962008B2 (en) | 2017-12-15 | 2021-03-30 | Emerson Climate Technologies, Inc. | Variable volume ratio compressor |
| US10995753B2 (en) | 2018-05-17 | 2021-05-04 | Emerson Climate Technologies, Inc. | Compressor having capacity modulation assembly |
| US11022119B2 (en) | 2017-10-03 | 2021-06-01 | Emerson Climate Technologies, Inc. | Variable volume ratio compressor |
| US11655813B2 (en) | 2021-07-29 | 2023-05-23 | Emerson Climate Technologies, Inc. | Compressor modulation system with multi-way valve |
| US11846287B1 (en) | 2022-08-11 | 2023-12-19 | Copeland Lp | Scroll compressor with center hub |
| US11965507B1 (en) | 2022-12-15 | 2024-04-23 | Copeland Lp | Compressor and valve assembly |
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| US11635078B2 (en) | 2009-04-07 | 2023-04-25 | Emerson Climate Technologies, Inc. | Compressor having capacity modulation assembly |
| US10954940B2 (en) | 2009-04-07 | 2021-03-23 | Emerson Climate Technologies, Inc. | Compressor having capacity modulation assembly |
| US11434910B2 (en) | 2012-11-15 | 2022-09-06 | Emerson Climate Technologies, Inc. | Scroll compressor having hub plate |
| US10907633B2 (en) | 2012-11-15 | 2021-02-02 | Emerson Climate Technologies, Inc. | Scroll compressor having hub plate |
| US10495086B2 (en) | 2012-11-15 | 2019-12-03 | Emerson Climate Technologies, Inc. | Compressor valve system and assembly |
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| US10323639B2 (en) | 2015-03-19 | 2019-06-18 | Emerson Climate Technologies, Inc. | Variable volume ratio compressor |
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| CN105952647A (en) * | 2016-06-20 | 2016-09-21 | 广东美芝制冷设备有限公司 | Rotary compressor |
| WO2018049057A1 (en) * | 2016-09-08 | 2018-03-15 | Emerson Climate Technologies, Inc. | Compressor |
| CN107806411B (en) * | 2016-09-08 | 2020-06-30 | 艾默生环境优化技术有限公司 | Compressor with a compressor housing having a plurality of compressor blades |
| CN109690084A (en) * | 2016-09-08 | 2019-04-26 | 艾默生环境优化技术有限公司 | Compressor |
| CN109690084B (en) * | 2016-09-08 | 2020-09-15 | 艾默生环境优化技术有限公司 | Compressor with a compressor housing having a plurality of compressor blades |
| US10801495B2 (en) | 2016-09-08 | 2020-10-13 | Emerson Climate Technologies, Inc. | Oil flow through the bearings of a scroll compressor |
| US10890186B2 (en) * | 2016-09-08 | 2021-01-12 | Emerson Climate Technologies, Inc. | Compressor |
| CN107806411A (en) * | 2016-09-08 | 2018-03-16 | 艾默生环境优化技术有限公司 | Compressor |
| US20180066657A1 (en) * | 2016-09-08 | 2018-03-08 | Emerson Climate Technologies, Inc. | Compressor |
| US10753352B2 (en) | 2017-02-07 | 2020-08-25 | Emerson Climate Technologies, Inc. | Compressor discharge valve assembly |
| US11022119B2 (en) | 2017-10-03 | 2021-06-01 | Emerson Climate Technologies, Inc. | Variable volume ratio compressor |
| CN107542667A (en) * | 2017-10-16 | 2018-01-05 | 瑞智(青岛)精密机电有限公司 | A kind of external-rotor-type high energy efficiency, the Rotary Compressor of low noise |
| US10962008B2 (en) | 2017-12-15 | 2021-03-30 | Emerson Climate Technologies, Inc. | Variable volume ratio compressor |
| US10995753B2 (en) | 2018-05-17 | 2021-05-04 | Emerson Climate Technologies, Inc. | Compressor having capacity modulation assembly |
| US11754072B2 (en) | 2018-05-17 | 2023-09-12 | Copeland Lp | Compressor having capacity modulation assembly |
| US11655813B2 (en) | 2021-07-29 | 2023-05-23 | Emerson Climate Technologies, Inc. | Compressor modulation system with multi-way valve |
| US11879460B2 (en) | 2021-07-29 | 2024-01-23 | Copeland Lp | Compressor modulation system with multi-way valve |
| US11846287B1 (en) | 2022-08-11 | 2023-12-19 | Copeland Lp | Scroll compressor with center hub |
| US11965507B1 (en) | 2022-12-15 | 2024-04-23 | Copeland Lp | Compressor and valve assembly |
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|---|---|
| CN105317678B (en) | 2018-01-12 |
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