CN216407218U - Magnetic suspension type centrifugal compressor, refrigeration system with same and refrigeration equipment - Google Patents
Magnetic suspension type centrifugal compressor, refrigeration system with same and refrigeration equipment Download PDFInfo
- Publication number
- CN216407218U CN216407218U CN202122639494.6U CN202122639494U CN216407218U CN 216407218 U CN216407218 U CN 216407218U CN 202122639494 U CN202122639494 U CN 202122639494U CN 216407218 U CN216407218 U CN 216407218U
- Authority
- CN
- China
- Prior art keywords
- channel
- centrifugal compressor
- magnetic suspension
- bearing
- volute
- 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.)
- Active
Links
- 239000000725 suspension Substances 0.000 title claims abstract description 40
- 238000005057 refrigeration Methods 0.000 title claims abstract description 23
- 230000001681 protective effect Effects 0.000 claims abstract description 18
- 239000003507 refrigerant Substances 0.000 claims description 30
- 238000005339 levitation Methods 0.000 claims description 27
- 238000001816 cooling Methods 0.000 claims description 18
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims 1
- 239000004519 grease Substances 0.000 abstract description 6
- 230000001050 lubricating effect Effects 0.000 abstract description 5
- 238000004891 communication Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model belongs to the technical field of refrigeration equipment, and particularly provides a magnetic suspension type centrifugal compressor, a refrigeration system with the same and refrigeration equipment. In order to solve the problem that lubricating grease of a protective bearing of the existing magnetic suspension type centrifugal compressor is easy to lose efficacy and carbonize due to high temperature, the magnetic suspension type centrifugal compressor comprises a magnetic suspension motor and the centrifugal compressor, wherein the magnetic suspension motor comprises a shell, a rotor, a radial magnetic suspension bearing, an axial thrust bearing and the protective bearing. The centrifugal compressor comprises a volute and an impeller, the volute is fixedly connected with the casing or integrally manufactured, and the impeller is coaxially and fixedly connected with the rotor. The first channel is communicated with the inside of the volute through the third channel, the first channel is further communicated with the inside of the casing, and the second channel is communicated with the inner side and the outer side of the casing. The utility model effectively solves the problems that the lubricating grease of the protective bearing is easy to lose efficacy and carbonize due to high temperature.
Description
Technical Field
The utility model belongs to the technical field of refrigeration equipment, and particularly provides a magnetic suspension type centrifugal compressor, a refrigeration system with the same and refrigeration equipment.
Background
Magnetic suspension centrifugal compressors are often used in refrigerators, air conditioners and other cooling and heating equipment. The magnetic suspension type centrifugal compressor comprises a magnetic suspension motor and a centrifugal compressor, wherein the magnetic suspension motor mainly comprises a shell, a stator which is arranged in the shell and fixedly connected with the shell, a rotor which is arranged in the stator, a radial magnetic suspension bearing used for supporting the rotor to rotate and an axial thrust bearing used for keeping the axial position of the rotor. The magnetic suspension motor further comprises a protective bearing arranged in the casing, wherein the protective bearing is used for bearing the static rotor to prevent the rotor from contacting with the radial magnetic suspension bearing, so that the radial magnetic suspension bearing is protected. When the magnetic suspension motor works, the radial magnetic suspension bearing is electrified to separate the rotor from the protection bearing and suspend the rotor.
When the magnetic suspension type centrifugal compressor is powered off or is unstable, the rotor rotating at a high speed loses buoyancy and is in contact with the protection bearing, and therefore the inner ring of the protection bearing is driven to rotate at a high speed. When the inner ring of the protection bearing rotates at a high speed, the roller in the protection bearing and the inner ring and the outer ring of the protection bearing have a quick friction effect, so that the protection bearing has large temperature rise in a short time, lubricating grease of the protection bearing is further caused to lose efficacy and carbonize, and even the roller of the protection bearing is blocked.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem that the lubricating grease of the protective bearing of the existing magnetic suspension type centrifugal compressor is easy to lose efficacy and carbonize due to high temperature.
In order to achieve the aim, the utility model provides a magnetic suspension type centrifugal compressor, which comprises a magnetic suspension motor and a centrifugal compressor, wherein the magnetic suspension motor comprises a shell, a rotor, a radial magnetic suspension bearing, an axial thrust bearing and a protection bearing; the centrifugal compressor comprises a volute and an impeller arranged in the volute, the volute is fixedly connected with the casing or integrally manufactured, and the impeller is coaxially and fixedly connected with the rotor; the volute is provided with a first channel and a second channel, the volute is provided with a third channel, the first channel is communicated with the interior of the volute through the third channel, the first channel is communicated with the interior of the casing through an outlet of the first channel, one end of the second channel leads into the casing, and the other end of the second channel leads out of the casing.
Optionally, the first channel includes an input channel, a cooling channel, and an output channel, and the third channel, the input channel, the cooling channel, and the output channel are sequentially communicated.
Optionally, the number of the cooling channels is not less than the number of the protection bearings, so that each protection bearing corresponds to at least one cooling channel.
Optionally, the magnetic levitation motor comprises two of the protection bearings, and the inlet of the second channel is disposed between the two protection bearings in the axial direction of the rotor.
Optionally, the magnetic levitation type centrifugal compressor further comprises a pressure reducing valve disposed in the first channel or the third channel.
Optionally, a throat structure is formed in the first channel and/or the third channel.
Optionally, the magnetic suspension type centrifugal compressor comprises two centrifugal compressors which are respectively arranged at two ends of the magnetic suspension motor in the axial direction and are connected in series; the third passage is provided on one of the two centrifugal compressors located upstream.
In addition, the utility model also provides a refrigerating system which comprises a condenser, a throttling device, an evaporator and the magnetic suspension type centrifugal compressor in any one of the technical schemes, wherein the centrifugal compressor, the condenser, the throttling device and the evaporator are sequentially in fluid communication end to end.
Optionally, the outlet of the second passage communicates with the outlet of the throttling device and with the inlet of the evaporator; alternatively, the outlet of the second passage communicates with the outlet of the evaporator.
In addition, the utility model also provides refrigeration equipment which comprises the refrigeration system in any one of the technical schemes.
Based on the foregoing description, it can be understood by those skilled in the art that, in the foregoing technical solution of the present invention, the casing is provided with the first channel and the second channel, the volute is provided with the third channel, the first channel is communicated with the interior of the volute through the third channel, the first channel is communicated with the interior of the casing through the outlet thereof, one end of the second channel is led into the casing, and the other end of the second channel is led out of the casing, so that the high-pressure refrigerant in the volute can enter the casing through the third channel and the first channel, and is expanded and cooled in the casing, so that the low-temperature refrigerant cools the components in the casing, the magnetic levitation motor is always kept at a lower working temperature, and the protection bearing can be kept at a lower working temperature. Because the protective bearing can be kept at a lower working temperature, when the rotor drives the inner ring of the protective bearing to rotate at a high speed, the temperature of the protective bearing cannot be raised too high, and the problems that lubricating grease of the protective bearing is easy to lose efficacy and carbonize due to high temperature are effectively solved.
Further, each protection bearing corresponds to at least one cooling channel, so that each protection bearing can indirectly absorb heat through the cooling channels, and effective cooling of the protection bearing is achieved.
Furthermore, the pressure reducing valve is arranged in the first channel or the third channel, so that the refrigerant entering the shell is the refrigerant cooled through expansion, and the refrigerant in the shell can effectively cool the components in the shell.
Furthermore, the outlet of the second channel is communicated with the outlet of the throttling device and is communicated with the inlet of the evaporator, so that the low-temperature refrigerant flowing out of the shell continuously absorbs heat in the evaporator, the comprehensive refrigeration efficiency of the refrigerant to the magnetic suspension motor and the evaporator is improved, and the electric energy is saved.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly explain the technical solution of the present invention, some embodiments of the present invention will be described hereinafter with reference to the accompanying drawings. Those skilled in the art will appreciate that elements or portions of the same reference number identified in different figures are the same or similar; the drawings of the utility model are not necessarily to scale relative to each other. In the drawings:
FIG. 1 is a schematic view of a centrifugal compressor of the magnetic levitation type in some embodiments of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a partial schematic view of a magnetic levitation type centrifugal compressor according to another embodiment of the present invention (corresponding to FIG. 2);
fig. 4 is a schematic diagram of the construction of a refrigeration system in accordance with some embodiments of the utility model.
Detailed Description
It should be understood by those skilled in the art that the embodiments described below are only a part of the embodiments of the present invention, not all of the embodiments of the present invention, and the part of the embodiments are intended to explain the technical principles of the present invention and not to limit the scope of the present invention. All other embodiments, which can be obtained by a person skilled in the art based on the embodiments provided by the present invention without inventive effort, shall still fall within the scope of protection of the present invention.
It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Furthermore, it should be noted that, for convenience of description and to enable those skilled in the art to quickly understand the technical solution of the present invention, only the technical features that are strongly associated (directly or indirectly associated) with the technical problem and/or the technical concept to be solved by the present invention will be described hereinafter, and no further description will be given to the technical features that are weakly associated with the technical problem and/or the technical concept to be solved by the present invention. Since the technical features with the weak degree of association belong to the common general knowledge in the field, the present invention does not cause insufficient disclosure of the present invention even if the features with the weak degree of association are not described.
A magnetic levitation type centrifugal compressor according to some embodiments of the present invention will be described in detail with reference to fig. 1. It should be noted that although the rotor of the centrifugal compressor of the magnetic levitation type shown in fig. 1 is arranged in the vertical direction in fig. 1, the centrifugal compressor of the magnetic levitation type of the present invention is generally used in practice with the rotor substantially parallel to the horizontal plane.
As shown in fig. 1, in some embodiments of the present invention, the magnetic levitation type centrifugal compressor 1 includes a magnetic levitation motor 11 and a centrifugal compressor 12, and the magnetic levitation motor 11 and the centrifugal compressor 12 are drivingly connected together. Preferably, a centrifugal compressor 12 is disposed at each end of the magnetic levitation motor 11 in the axial direction.
With continued reference to fig. 1, the magnetic levitation motor 11 includes a housing 111, a stator 112, a rotor 113, a radial magnetic levitation bearing 114, an axial thrust bearing 115, and a protection bearing 116. Wherein the stator 112 is fixedly disposed inside the casing 111. The rotor 113 is located radially inside the stator 112, and the rotor 113 can freely rotate with respect to the housing 111 and the stator 112. Further, the rotor 113 is provided with a push disk 1131 extending radially outward thereof. The radial magnetic bearing 114 is fixedly connected to the casing 111 and disposed between the casing 111 and the rotor 113 in a radial direction of the rotor 113. The axial thrust bearing 115 is fixedly connected to the housing 111 and is disposed between the housing 111 and the thrust plate 1131 in the axial direction of the rotor 113. The outer ring of the protective bearing 116 abuts against the casing 111, and an annular gap is provided between the inner ring of the protective bearing 116 and the rotor 113.
With continued reference to fig. 1, the centrifugal compressor 12 includes a volute 121 fixedly connected or integrally formed with the housing 111, and an impeller 122, the impeller 122 being rotatably disposed within the housing 111 and coaxially fixedly connected with the rotor 113.
When the magnetic levitation motor 11 is not in operation, the rotor 113 abuts the protective bearing 116, and thus the rotor 113 is carried by the protective bearing 116.
During operation of the magnetic levitation motor 11, the radial magnetic levitation bearing 114 and the axial thrust bearing 11 are energized and thus generate a magnetic field, under the effect of which the rotor 113 is separated from the protective bearing 116 and is suspended radially within the protective bearing 116.
As shown in fig. 1 and 2, the casing 111 is provided with a first channel 1111 and a second channel 1112, and the scroll 121 is provided with a third channel 1211. The first passage 1111 communicates with the inside of the scroll casing 121 through the third passage 1211, and the first passage 1111 communicates with the inside of the casing 111 through an outlet thereof. One end of the second channel 1112 opens into the cabinet 111, and the other end of the second channel 1112 opens out of the cabinet 111. In other words, the refrigerant in the scroll 121 can enter the casing 111 through the third passage 1211 and the first passage 1111, and the refrigerant in the casing 111 can be discharged out of the casing 111 again through the second passage 1112.
With continued reference to FIG. 1, the first channel 1111 includes an input channel 11111, a cooling channel 11112, and an output channel 11113, the inlet of the first channel 1111 being disposed at an end of the input channel 11111 proximate to the third channel 1211, and the outlet of the first channel 1111 being disposed at an end of the output channel 11113 distal from the cooling channel 11112. Wherein, the number of the cooling channels 11112 is not less than the number of the protection bearings 116, so that each protection bearing 116 corresponds to at least one cooling channel 11112. Preferably, as shown in fig. 1, both the cooling passage 11112 and the protective bearing 116 are two.
With continued reference to fig. 1, the inlet of the second channel 1112 is disposed between the two protection bearings 116 in the axial direction of the rotor 113.
As shown in fig. 2, the magnetic suspension type centrifugal compressor further includes a pressure reducing valve 117, and the pressure reducing valve 117 is disposed in the first channel 1111, so that the refrigerant can be reduced in pressure and expanded through the pressure reducing valve 117, and the temperature is reduced, thereby absorbing more heat in the casing 111, and optimizing the cooling effect of the magnetic suspension motor 11. Preferably, the pressure reducing valve 117 is provided at a portion of the first passage 1111 adjacent to the third passage 1211, so that an assembler can mount the pressure reducing valve 117 to the casing 111 first and then mount the scroll 121 to the casing 111.
Further, the pressure reducing valve 117 may be disposed in the third passage 1211 as needed by those skilled in the art.
As shown in fig. 2, in some embodiments of the present invention, the pressure reducing valve 117 is a member having an orifice to perform a pressure reducing function of throttling the refrigerant through the orifice.
Further, the pressure reducing valve 117 may be provided or replaced with any other feasible structure as desired by those skilled in the art. The method comprises the following specific steps:
alternatively, as shown in fig. 3, in other embodiments of the present invention, a mounting hole 1113 is provided on the cabinet 111, and the mounting hole 1113 communicates with the first channel 1111.
With continued reference to fig. 3, the pressure reducing valve 117 includes a spool 1171 and a spring 1172. The spool 1171 is slidably fitted into the mounting hole 1113 to block the first passage 1111 from an upstream portion (a portion of the first passage 1111 on the upper side of the spool 1171 in fig. 3) communicating with the third passage 1211 and a downstream portion (a portion of the first passage 1111 on the lower side of the spool 1171 in fig. 3) communicating with the inside of the housing 1111. The spool 1171 is provided with an annular groove (not shown) as a communication structure for communicating the upstream portion and the downstream portion. In addition, the annular groove may be provided with any other possible communication structure, such as a through hole penetrating the valve element 1171 in the radial direction, as required by those skilled in the art.
With continued reference to fig. 3, a spring 1172 is disposed on a side of the spool 1171 proximate to the open end of the mounting bore 1113, the spring 1172 being configured to provide a force to the spool 1171 proximate to the bottom end of the mounting bore 1113. The side of the spool 1171 near the bottom end of the mounting bore 1113 communicates with the downstream portion such that fluid in the downstream portion provides a force to the spool 1171 away from the bottom end of the mounting bore 1113.
Further, in order to achieve fixation of the spring 1172, a portion of the mounting hole 1111 near the open end thereof is preferably provided as a threaded hole, and a threaded member, which may be a bolt, a screw, a plug, or the like, abutting the spring 1172 is mounted in the threaded hole.
The operation of the pressure reducing valve 117 according to another embodiment of the present invention will be described in detail with reference to fig. 3.
As shown in fig. 3, when the refrigerant in the scroll 121 does not enter the first passage 1111, the spring 1172 urges the valve element 1171 against the bottom end of the mounting hole 1113. At this time, the annular groove is smallest in a shielded area by the side wall of the mounting hole 1113, i.e., the highest in flow-through capacity between the upstream portion and the downstream portion of the first passage 1111. When the refrigerant in the scroll 121 enters the first channel 1111, the refrigerant in the downstream portion flows to the left end of the spool 1171 in fig. 3, and thus provides a pressure to the spool 1171 to the right. As the refrigerant pressure in the downstream portion increases, the refrigerant at the left end of the valve element 1171 starts to overcome the elastic force of the spring 1172, and the valve element 1171 starts to move rightward in fig. 3. As the spool 1171 moves rightward, the annular groove is gradually increased in the shielded area by the side wall of the mounting hole 1113, so that the flow capacity between the upstream and downstream portions of the first passage 1111 gradually decreases until completely blocked. Since the refrigerant in the casing 111 flows out through the second passage 1112, the pressure of the refrigerant in the downstream portion of the first passage 1111 also decreases, and the spring 1172 again moves the valve body 1171 in fig. 3 to the left, thereby allowing the upstream portion and the downstream portion of the first passage 1111 to communicate with each other again.
It should be noted that the above-mentioned operation principle of the valve element 1171 is a theoretical operation principle, and in actual use, since the refrigerant in the casing 111 enters and exits, and a relatively balanced state is achieved, the pressure of the refrigerant in the casing 111 is relatively balanced, so that the valve element 1171 is kept at a relatively stable position, and the pressure of the refrigerant at the downstream portion of the first channel 1111 is relatively stable, that is, the pressure of the refrigerant after being expanded is relatively stable.
It can be seen that the pressure reducing valve 117 in other embodiments of the present invention can make the refrigerant cool the casing 111 and the components therein for a long time and stably.
Further, although not shown in the drawings, in still other embodiments of the present invention, the pressure reducing valve 117 may be replaced with a necking structure provided in the first channel 1111 or the third channel 1211, that is, a diameter of a certain section of the first channel 1111 or the third channel 1211 is made smaller than a diameter of the other section of the first channel 1111.
The refrigeration system of the present invention and the principle of use of the magnetic levitation type centrifugal compressor of the present invention will be described in detail with reference to fig. 4.
As shown in fig. 4, in some embodiments of the utility model, the refrigeration system includes a magnetic levitation type centrifugal compressor 1, a check valve 2, a condenser 3, a dry filter 4, an electronic expansion valve 5, an evaporator 6, and an electric ball valve 7. Wherein, the centrifugal compressor 12, the one-way valve 2, the condenser 3, the drying filter 4, the electronic expansion valve 5 as a throttling device, the evaporator 6 and the electric ball valve 7 are sequentially communicated end to end.
Note that, two centrifugal compressors 12 in the magnetic levitation type centrifugal compressor 1 are connected in series with each other. Specifically, the inlet of one of the two centrifugal compressors 12 is in fluid communication with the motorized ball valve 7, the outlet of the one centrifugal compressor 12 is in fluid communication with the inlet of the other of the two centrifugal compressors 12, and the outlet of the other of the two centrifugal compressors 12 is in fluid communication with the check valve 2.
With reference to fig. 4, the outlet of the second channel 1112 is communicated with the inlet of the evaporator 6 and the outlet of the electronic expansion valve 5, so that the low-temperature refrigerant flowing out of the casing 111 continues to absorb heat in the evaporator 6, thereby improving the comprehensive refrigeration efficiency of the refrigerant on the magnetic suspension motor 11 and the evaporator 6 and saving electric energy.
As can be understood by those skilled in the art, since the protection bearing 116 can be cooled by the cooling medium entering the magnetic levitation motor 11, when the rotor 113 drives the inner ring of the protection bearing 116 to rotate at a high speed, the temperature of the protection bearing 116 will not rise too high, so as to effectively overcome the problem that the protection bearing 116 is prone to grease failure and carbonization due to high temperature.
Furthermore, in other embodiments of the present invention, the outlet of the second channel 1112 may be in communication with the outlet of the evaporator 6 as desired by those skilled in the art.
In the present invention, the check valve 2 prevents the refrigerant in the condenser 3 from flowing back to the centrifugal compressor 12, and prevents the refrigerant in the evaporator 6 from flowing to the centrifugal compressor 12 when the electric ball valve 7 is closed. Therefore, the person skilled in the art can also omit the one-way valve 2 and/or the electric ball valve 7 if desired.
In addition, the electronic expansion valve 5 can be replaced by any other feasible throttling device, such as a capillary tube, according to the needs of the person skilled in the art.
Further, although not shown in the drawings, the present invention also provides a refrigeration apparatus comprising the refrigeration system described in any of the foregoing embodiments. The refrigeration device may be a refrigerator, an air conditioner, an ice chest, or the like.
Finally, the "refrigerant" in the present invention may be any one of refrigerants commonly used in conventional refrigerators and air conditioners.
So far, the technical solution of the present invention has been described in connection with the foregoing embodiments, but it is easily understood by those skilled in the art that the scope of the present invention is not limited to these specific embodiments. Without departing from the technical principle of the present invention, a person skilled in the art may split and combine the technical solutions in the above embodiments, and may make equivalent changes or substitutions for related technical features, and any changes, equivalents, improvements, etc. made within the technical concept and/or technical principle of the present invention will fall within the protection scope of the present invention.
Claims (10)
1. A magnetic suspension type centrifugal compressor comprises a magnetic suspension motor and a centrifugal compressor, wherein the magnetic suspension motor comprises a shell, a rotor, a radial magnetic suspension bearing, an axial thrust bearing and a protection bearing; it is characterized in that the preparation method is characterized in that,
the centrifugal compressor comprises a volute and an impeller arranged in the volute, the volute is fixedly connected with the casing or integrally manufactured, and the impeller is coaxially and fixedly connected with the rotor;
the casing is provided with a first channel and a second channel, the volute is provided with a third channel,
the first channel is communicated with the interior of the volute through the third channel, the first channel is communicated with the interior of the machine shell through an outlet of the first channel, one end of the second channel leads into the machine shell, and the other end of the second channel leads out of the machine shell.
2. The magnetic levitation centrifugal compressor of claim 1,
the first channel includes an input channel, a cooling channel, and an output channel,
the third channel, the input channel, the cooling channel and the output channel are communicated in sequence.
3. The magnetic levitation type centrifugal compressor according to claim 2,
the number of the cooling channels is not less than that of the protection bearings, so that each protection bearing corresponds to at least one cooling channel.
4. The magnetic levitation type centrifugal compressor according to claim 2,
the magnetic suspension motor comprises two protection bearings,
the inlet of the second passage is disposed between the two protective bearings in the axial direction of the rotor.
5. The magnetic levitation centrifugal compressor of claim 1,
the magnetic suspension type centrifugal compressor further comprises a pressure reducing valve, and the pressure reducing valve is arranged in the first channel or the third channel.
6. The magnetic levitation centrifugal compressor of claim 1,
and a necking structure is formed in the first channel and/or the third channel.
7. The magnetically levitated centrifugal compressor of any one of claims 1-6,
the magnetic suspension type centrifugal compressor comprises two centrifugal compressors which are respectively arranged at two ends of the magnetic suspension motor in the axial direction and are connected in series;
the third passage is provided on one of the two centrifugal compressors located upstream.
8. A refrigeration system comprising a condenser, a throttling device, an evaporator and a centrifugal compressor of magnetic levitation type according to any one of claims 1 to 7,
the centrifugal compressor, the condenser, the throttling device and the evaporator are sequentially communicated in a head-to-tail fluid mode.
9. The refrigerant system as set forth in claim 8,
an outlet of the second passage communicates with an outlet of the throttling device and with an inlet of the evaporator; or,
the outlet of the second passage communicates with the outlet of the evaporator.
10. Refrigeration device, characterized in that it comprises a refrigeration system according to claim 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122639494.6U CN216407218U (en) | 2021-10-29 | 2021-10-29 | Magnetic suspension type centrifugal compressor, refrigeration system with same and refrigeration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122639494.6U CN216407218U (en) | 2021-10-29 | 2021-10-29 | Magnetic suspension type centrifugal compressor, refrigeration system with same and refrigeration equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216407218U true CN216407218U (en) | 2022-04-29 |
Family
ID=81298292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122639494.6U Active CN216407218U (en) | 2021-10-29 | 2021-10-29 | Magnetic suspension type centrifugal compressor, refrigeration system with same and refrigeration equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216407218U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024051099A1 (en) * | 2022-09-07 | 2024-03-14 | 深圳市英维克科技股份有限公司 | Suspension centrifugal compressor and air conditioner system |
-
2021
- 2021-10-29 CN CN202122639494.6U patent/CN216407218U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024051099A1 (en) * | 2022-09-07 | 2024-03-14 | 深圳市英维克科技股份有限公司 | Suspension centrifugal compressor and air conditioner system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9671139B2 (en) | Centrifugal refrigerant vapour compressors | |
| CN101326413B (en) | Lubrication system for acute stopping bearing of magnetic bearing compressor | |
| CN103649546B (en) | Compressor clearance is controlled | |
| WO2017215493A1 (en) | Refrigerating unit | |
| CN104823360B (en) | motor rotor and air gap cooling | |
| CN216407218U (en) | Magnetic suspension type centrifugal compressor, refrigeration system with same and refrigeration equipment | |
| CN111365906B (en) | Refrigerant circulation system | |
| CN207647779U (en) | Compressor and air conditioning system with same | |
| CN216922617U (en) | Self-cooling system of magnetic suspension air compressor | |
| CN104949369A (en) | Turbine refrigerator | |
| CN216409346U (en) | Magnetic suspension type centrifugal compressor, refrigeration system and refrigeration equipment | |
| JP6370593B2 (en) | Oil-cooled multistage screw compressor and oil draining method thereof | |
| CN116007214A (en) | Energy storage heat management system of centrifugal compressor | |
| CN116066381A (en) | Magnetic suspension type centrifugal compressor, refrigerating system with magnetic suspension type centrifugal compressor and refrigerating equipment | |
| CN209344889U (en) | Motor rotor, compressor, refrigerant circulation system and refrigeration equipment | |
| CN115516267A (en) | Cooling tower and cooler system comprising same | |
| CN217462604U (en) | Centrifugal compressor, refrigerating system, air conditioner and refrigerating equipment | |
| CN217682320U (en) | Centrifugal compressor, refrigerating system, air conditioner and refrigerating equipment | |
| KR20210119834A (en) | Turbo compressor and ciculation system | |
| CN219199534U (en) | Oilless cascade refrigeration system | |
| CN219412959U (en) | Automobile air conditioner based on air-floating centrifugal compressor | |
| KR20210129962A (en) | Compressor and Chiller system having the same | |
| CN218906851U (en) | Automobile thermal management device based on air-floatation centrifugal compressor | |
| CN219160655U (en) | Multi-water source parallel energy storage thermal management system | |
| CN218936697U (en) | Water chilling unit and central air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |