CN115573927A - Integrated multi-stage compressor and compressor unit - Google Patents
Integrated multi-stage compressor and compressor unit Download PDFInfo
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- CN115573927A CN115573927A CN202211260080.5A CN202211260080A CN115573927A CN 115573927 A CN115573927 A CN 115573927A CN 202211260080 A CN202211260080 A CN 202211260080A CN 115573927 A CN115573927 A CN 115573927A
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- 238000001816 cooling Methods 0.000 claims description 5
- 230000004308 accommodation Effects 0.000 claims 1
- 230000006835 compression Effects 0.000 abstract description 18
- 238000007906 compression Methods 0.000 abstract description 18
- 230000008901 benefit Effects 0.000 abstract description 17
- 239000012530 fluid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/10—Centrifugal pumps for compressing or evacuating
- F04D17/12—Multi-stage pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The embodiment of the invention provides an integrated multi-section compressor and a compressor unit. The integrated multi-stage compressor comprises a motor shell, a stator, a rotor shaft, a first air compressor, a second air compressor, a third air compressor, a first air flow channel and a second air flow channel. The motor shell is provided with an accommodating cavity, the stator is arranged in the accommodating cavity of the second air flow channel, the stator is arranged on the outer side of the rotor shaft, the rotor shaft is provided with a first end and a second end which are arranged oppositely, the first air compressor, the second air compressor and the third air compressor are sleeved on the rotor shaft, the first air compressor is arranged at the first end, at least one of the second air compressor and the third air compressor is arranged at the second end, and the air flow channel of the first air compressor, the first air flow channel, the air flow channel of the second air compressor, the second air flow channel and the air flow channel of the third air compressor are sequentially connected in series. Therefore, the integrated multi-stage compressor according to the embodiment of the present invention has advantages of high compression efficiency and compact structure.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to an integrated multi-section compressor and a compressor unit with the same.
Background
The compressor is a vane-type rotary machine that utilizes the interaction of the vanes and the fluid to increase the pressure and kinetic energy of the fluid, and utilizes a flow-through element to decelerate the fluid and convert the kinetic energy to an increase in pressure. According to the primary direction of media motion. The rim speed of the compression wheel cannot be too high, so that the pressure ratio which can be achieved by a single-stage centrifugal compressor is limited, and a commonly used two-stage centrifugal compressor with impellers arranged at two ends cannot compress a refrigerant and corresponding gas to a pressure range commonly used in vapor compression refrigeration. When the centrifugal compressor is arranged, at least two motors are often used for driving three centrifugal compressors to work, and the centrifugal compressor has the advantage of being not compact enough.
Disclosure of Invention
The present invention is directed to solving, at least in part, one of the technical problems in the related art. To this end, an embodiment of the present invention proposes an integrated multistage compressor. The integrated multi-stage compressor has the advantages of high compression efficiency and compact structure.
The embodiment of the invention also provides a compressor unit.
The integrated multi-stage compressor comprises a motor shell, a stator, a rotor shaft, a first air compressor, a second air compressor, a third air compressor, a first air flow channel and a second air flow channel.
The motor shell is provided with an accommodating cavity, the stator is arranged in the accommodating cavity of the second airflow channel, the stator is arranged on the outer side of the rotor shaft, the rotor shaft is provided with a first end and a second end which are arranged oppositely, a hub of each of the first air compressor, the second air compressor and the third air compressor is sleeved on the rotor shaft, the first air compressor is arranged at the first end, at least one of the second air compressor and the third air compressor is arranged at the second end, and the airflow channel of the first air compressor, the first airflow channel, the airflow channel of the second air compressor, the second airflow channel and the airflow channel of the third air compressor are sequentially connected in series. In other words, the first air flow channel communicates with the air flow channel of the first compressor and the air flow channel of the second compressor, and the second air flow channel communicates with the air flow channel of the second compressor and the air flow channel of the third compressor.
According to the integrated multi-stage compressor provided by the embodiment of the invention, the first compressor, the second compressor and the third compressor are arranged in series, so that three-stage compression of gas is realized, the pressure ratio of the gas can be greatly improved, and further, the compression power consumption is reduced.
According to the integrated multi-stage compressor provided by the embodiment of the invention, the first compressor, the second compressor and the third compressor are all sleeved on the rotor shaft, so that the number of motors can be reduced, the miniaturization of the integrated multi-stage compressor is favorably realized, and the integrated multi-stage compressor has the advantages of compact structure and low cost.
Therefore, the integrated multi-stage compressor provided by the embodiment of the invention has the advantages of low compression power consumption, compact structure and low cost.
In some embodiments, the second compressor and the third compressor are disposed back-to-back at the second end, the second compressor being located between the motor housing and the third compressor in an axial direction of the rotor shaft.
In some embodiments, the first air flow passage comprises a flow passage opened in the motor housing, and the flow passage communicates an exhaust port of the first compressor with an intake port of the second compressor.
In some embodiments, the first air flow channel includes a first air guide pipe section and a first flow channel section, the first air guide pipe section is disposed outside the motor casing, the first flow channel section is obliquely disposed on the casing of the second compressor and is communicated with the air inlet of the second compressor, and the first air guide pipe section is communicated with the first compressor and the first flow channel section.
In some embodiments, the second compressor and the third compressor are disposed back-to-back at the second end, the third compressor being located between the motor housing and the second compressor in an axial direction of the rotor shaft.
In some embodiments, the second air flow channel includes a second air guide pipe section and a second flow channel section, the second air guide pipe section is disposed outside the motor casing, the second flow channel section is obliquely disposed on the casing of the third compressor and is communicated with the air inlet of the third compressor, and the second air guide pipe section is communicated with the second compressor and the second flow channel section.
In some embodiments, the first end and the second end each extend outside the motor housing, the first compressor and the third compressor are disposed back-to-back at the first end, and the third compressor is located between the motor housing and the first compressor.
In some embodiments, the second air flow channel includes a circulation channel opened in the motor housing, and the second air flow channel communicates the air outlet of the second compressor with the air inlet of the third compressor.
In some embodiments, the integrated multi-stage compressor further comprises a first cooler disposed in-line between the first compressor and the second compressor, or the first cooler is disposed in-line between the second compressor and the third compressor.
In some embodiments, the integrated multi-stage compressor further comprises a second cooler, the first cooler being disposed in series between the first compressor and the second compressor, or the second cooler being disposed in series between the second compressor and the third compressor.
In some embodiments, a cooling channel is formed within the motor housing.
In some embodiments, the rotor shaft includes a first section, a second section and a third section which are connected in sequence, the second section is disposed in the accommodating cavity, a hub sleeve of the first compressor is disposed in the first section, a hub of at least one of the second compressor and the third compressor is disposed in the third section, a cross-sectional area of the second section is larger than that of the first section, and a cross-sectional area of the second section is larger than that of the third section.
The compressor assembly of the embodiment of the invention may comprise the integrated multi-stage compressor of any one of the embodiments.
Drawings
FIG. 1 is an integrated multi-stage compressor according to one embodiment of the present invention.
Fig. 2 is an integrated multi-stage compressor according to another embodiment of the present invention.
Fig. 3 is an integrated multi-stage compressor according to yet another embodiment of the present invention.
Fig. 4 is an integrated multi-stage compressor according to yet another embodiment of the present invention.
Fig. 5 is an integrated multi-stage compressor according to yet another embodiment of the present invention.
Reference numerals:
an integrated multi-stage compressor 100;
a motor case 1; a housing cavity 101;
a stator 11; a rotor shaft 12; a first segment 121; a second section 122; a third segment 123;
a first compressor 2; a second compressor 3; a third compressor 4;
the first air flow passage 51; a first gas duct section 511; a first flow path segment 512; a second airflow passage 52; a second gas duct section 521; a second flow path segment 522;
a first cooler 61; a second cooler 62;
a cooling channel 7.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present invention and should not be construed as limiting the present invention.
An integrated multi-stage compressor 100 according to an embodiment of the present invention will now be described with reference to fig. 1-5.
The integrated multi-stage compressor 100 of the embodiment of the invention comprises a motor housing 1, a stator 11, a rotor shaft 12, a first compressor 2, a second compressor 3, a third compressor 4, a first air flow passage 51 and a second air flow passage 52.
The motor shell 1 is provided with an accommodating cavity 101, the stator 11 is arranged in the accommodating cavity 101 of the second air flow channel 52, the stator 11 is arranged on the outer side of the rotor shaft 12, the rotor shaft 12 is provided with a first end and a second end which are oppositely arranged, a hub of each of the first compressor 2, the second compressor 3 and the third compressor 4 is sleeved on the rotor shaft 12, the first compressor 2 is arranged at the first end, at least one of the second compressor 3 and the third compressor 4 is arranged at the second end, and the air flow channel of the first compressor 2, the first air flow channel 51, the air flow channel of the second compressor 3, the second air flow channel 52 and the air flow channel of the third compressor 4 are sequentially connected in series. In other words, the first air flow passage 51 communicates between the air flow passage of the first compressor 2 and the air flow passage of the second compressor 3, and the second air flow passage 52 communicates between the air flow passage of the second compressor 3 and the air flow passage of the third compressor 4.
According to the integrated multi-stage compressor 100 provided by the embodiment of the invention, the first compressor 2, the second compressor 3 and the third compressor 4 are arranged in series, so that three-stage compression of gas is realized, the pressure ratio of the gas can be increased, and the compression power consumption can be reduced.
According to the integrated multi-stage compressor 100 provided by the embodiment of the invention, the first compressor 2, the second compressor 3 and the third compressor 4 are all sleeved on the same rotor shaft 12, so that the number of the motors can be reduced, the integrated multi-stage compressor 100 is beneficial to realizing miniaturization, and the integrated multi-stage compressor has the advantage of compact structure.
Therefore, the integrated multi-stage compressor 100 of the embodiment of the present invention has the advantages of low compression power consumption, compact structure and low cost.
As shown in fig. 1 to 3, the second compressor 3 and the third compressor 4 are arranged at the second end in a back-to-back manner, and the second compressor 3 is located between the motor housing 1 and the third compressor 4 in the axial direction of the rotor shaft 12. It is understood that the second compressor 3 is located between the first compressor 2 and the third compressor 4 in the axial direction of the rotor shaft 12.
It should be noted that the back-to-back arrangement of the second compressor 3 and the third compressor 4 is specifically as follows: the blade root of the blade in the second compressor 3 is arranged opposite to the blade root of the blade in the third compressor 4; or the blade tops of the blades in the second compressor 3 are arranged opposite to the blade tops of the blades in the third compressor 4.
According to the integrated multi-stage compressor 100 provided by the embodiment of the invention, the second compressor 3 and the third compressor 4 are arranged back to back, so that axial forces generated by the second compressor 3 and the third compressor 4 can be mutually counteracted in the rotation process of the rotor shaft 12, the axial forces borne by the rotor shaft 12 can be reduced or balanced, and the structural stability and the service life of the integrated multi-stage compressor 100 are further improved. Thereby, the compression efficiency of the integrated multistage compressor 100 is further improved. In addition, the second compressor 3 is positioned between the motor housing 1 and the third compressor 4 along the axial direction of the rotor shaft 12, so that the length of the second air flow channel 52 can be reduced, and the manufacturing cost is reduced.
Optionally, the first end and the second end both extend outside the motor housing 1, which has the advantage of facilitating the installation of the first compressor 2, the second compressor 3 and the third compressor 4.
As shown in fig. 1 and 2, the second compressor 3 is located between the motor housing 1 and the third compressor 4 along the axial direction of the rotor shaft 12, the first air flow passage 51 includes a flow passage provided in the motor housing 1, the flow passage communicates an exhaust port of the first compressor 2 with an intake port of the second compressor 3, and the first air flow passage 51 includes a flow passage provided in the motor housing 1. For example, as shown in fig. 1, the left end of the first air flow passage 51 is connected to the exhaust port of the first compressor 2, and the right end of the first air flow passage 51 is connected to the intake port of the second compressor 3.
The integrated multistage compressor 100 according to the embodiment of the present invention includes the flow channel provided in the motor housing 1 in the first air flow channel 51, so that the space in the motor housing 1 of the integrated multistage compressor 100 according to the embodiment of the present invention is fully utilized, the volume of the integrated multistage compressor 100 according to the embodiment of the present invention is further reduced, an additional flow channel provided outside is not required, and the integrated multistage compressor has an advantage of increasing the compactness of the structure. Moreover, a flow channel is formed in the motor shell 1, and the motor shell has the advantages of stable structure and high strength. In addition, the motor coolant can simultaneously reduce the temperature in the first air flow passage 51 and reduce the compression power consumption of the second compressor 3.
The embodiment of the present invention is not limited thereto, and in other embodiments, as shown in fig. 3, the second compressor 3 is located between the first compressor 2 and the third compressor 4 along the axial direction of the rotor shaft 12, the first air flow passage 51 includes a first air guide pipe section 511 and a first flow passage section 512, the first air guide pipe section 511 is arranged outside the motor housing 1, the first flow passage section 512 is obliquely arranged on the housing of the second compressor 3 and is communicated with the air inlet of the second compressor 3, and the first air guide pipe section 511 is communicated with the first flow passage section 512 and the first compressor 2.
According to the integrated multi-stage compressor 100 provided by the embodiment of the invention, the first air duct 51 is provided with the first air duct section 511 and the first flow passage section 512, the first air duct section 511 is arranged outside the motor housing 1, and the first flow passage section 512 is obliquely arranged on the housing of the second compressor 3 and is communicated with the air inlet of the second compressor 3, so that air can be introduced into the second compressor 3. The convenience of manufacturing, processing and installing the first gas guide pipe section 511 is improved.
In other embodiments, as shown in fig. 4, the second compressor 3 and the third compressor 4 are arranged at the second end back to back, and the third compressor 4 is located between the motor housing 1 and the second compressor 3 in the axial direction of the rotor shaft 12.
The integrated multi-stage compressor 100 according to the embodiment of the present invention is arranged back to back by the second compressor 3 and the third compressor 4, so as to reduce or balance the axial force applied to the rotor shaft 12, thereby improving the structural stability and the service life of the integrated multi-stage compressor 100. Thereby, the compression efficiency of the integrated multistage compressor 100 is further improved.
As shown in fig. 4, the second air flow channel 52 includes a second air duct section 521 and a second flow channel section 522, the second air duct section 521 is disposed outside the motor housing 1, the second flow channel section 522 is obliquely disposed on the housing of the third compressor 4 and is communicated with the air inlet of the third compressor 4, and the second air duct section 521 communicates the second compressor 3 and the second flow channel section 522.
According to the integrated multi-stage compressor 100 provided by the embodiment of the invention, the second air flow channel 52 is provided with the second air guide pipe section 521 and the second flow channel section 522, the second air guide pipe section 521 is arranged outside the motor housing 1, and the second flow channel section 522 is obliquely arranged on the housing of the second compressor 3 and is communicated with the air inlet of the second compressor 3, so that air can be introduced into the side wall of the second compressor 3, and the integrated multi-stage compressor 100 has the advantages of convenience in manufacturing, processing and mounting.
As shown in fig. 5, the first compressor 2 and the third compressor 4 are arranged back to back at the first end, the third compressor 4 being located between the motor housing 1 and the first compressor 2. It will be appreciated that the third compressor 4 is located between the first compressor 2 and the second compressor 3.
It should be noted that the first compressor 2 and the third compressor 4 are arranged back to back specifically as follows: the blade root of the blade in the first compressor 2 is arranged opposite to the blade root of the blade in the third compressor 4; or the blade tops of the blades in the first compressor 2 are arranged opposite to the blade tops of the blades in the third compressor 4.
According to the integrated multi-stage compressor 100 provided by the embodiment of the invention, the first compressor 2 and the third compressor 4 are arranged back to back, so that axial forces generated by the first compressor 2 and the third compressor 4 can be mutually counteracted in the rotation process of the rotor shaft 12, the effect of reducing or balancing the axial force borne by the rotor shaft 12 is achieved, and the structural stability and the service life of the integrated multi-stage compressor 100 are further improved. Thereby, the compression efficiency of the integrated multistage compressor 100 is further improved.
Optionally, both the first end and the second end extend outside the housing.
As shown in fig. 5, the second air flow passage 52 includes a flow passage opened in the motor housing 1, and the second air flow passage 52 communicates the exhaust port of the second compressor 3 with the intake port of the third compressor 4.
The integrated multi-stage compressor 100 according to the embodiment of the present invention fully utilizes the space in the motor housing 1 of the integrated multi-stage compressor 100 according to the embodiment of the present invention by providing the second airflow channel 52 in the flow channel in the motor housing 1, so as to further reduce the volume of the integrated multi-stage compressor 100 according to the embodiment of the present invention, and an additional flow channel at the outer side is not required, thereby having an advantage of increasing the compactness of the structure. Moreover, the motor housing 1 forms a flow channel, which has the advantages of stable structure and high strength. In addition, the motor coolant can simultaneously reduce the temperature in the first air flow passage 51 and reduce the compression power consumption of the second compressor 3.
The integrated multi-stage compressor 100 further includes a first cooler 61, and the first cooler 61 is serially arranged between the first compressor 2 and the second compressor 3, or the first cooler 61 is serially arranged between the second compressor 3 and the third compressor 4.
The integrated multi-stage compressor 100 according to the embodiment of the present invention improves the compression efficiency by providing the first cooler 61.
The integrated multi-stage compressor 100 further includes a second cooler 62, the first cooler 61 is serially arranged between the first compressor 2 and the second compressor 3, and the second cooler 62 is serially arranged between the second compressor 3 and the third compressor 4.
The integrated multistage compressor 100 according to the embodiment of the present invention has an advantage of further improving the compression efficiency of the integrated multistage compressor 100 by providing the first cooler 61 and the second cooler 62.
As shown in fig. 1 to 5, a cooling passage 7 is formed in the motor housing 1.
According to the integrated multi-stage compressor 100 provided by the embodiment of the invention, the cooling channel 7 is arranged on the motor shell 1, so that the temperature in the accommodating cavity 101 can be reduced, and the problem that the motor is burnt out due to overhigh temperature of the accommodating cavity 101 is avoided. Has the advantage of safety of motor operation.
As shown in fig. 1 to 5, the rotor shaft 12 includes a first section 121, a second section 122 and a third section 123 connected in sequence, the second section 122 is disposed in the accommodating cavity 101, a hub sleeve of the first compressor 2 is disposed on the first section 121, a hub of at least one of the second compressor 3 and the third compressor 4 is disposed on the third section 123, a cross-sectional area of the second section 122 is larger than a cross-sectional area of the first section 121, and a cross-sectional area of the second section 122 is larger than a cross-sectional area of the third section 123. It will be appreciated that a first step surface is formed between the first segment 121 and the second segment 122, and a second step surface is formed between the second segment 122 and the third segment 123.
According to the integrated multi-stage compressor 100 provided by the embodiment of the invention, the first step surface formed between the first stage 121 and the second stage 122 and the second step surface formed between the second stage 122 and the third stage 123 can axially limit the corresponding compressor when the corresponding compressor is installed, and the integrated multi-stage compressor has the advantage of improving the stability of the structure.
A compressor train according to an embodiment of the present invention comprises an integrated multi-stage compressor 100 according to any one of the above. The compressor unit provided by the embodiment of the invention has the advantages of high compression efficiency and compact structure.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or the first and second features may be indirectly contacting each other through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (13)
1. An integrated, multi-stage compressor, comprising:
a motor housing having a receiving cavity;
the stator is arranged in the accommodating cavity, the stator is arranged on the outer side of the rotor shaft, and the rotor shaft is provided with a first end and a second end which are oppositely arranged;
the rotor shaft is sleeved with a hub of each of the first gas compressor, the second gas compressor and the third gas compressor, the first gas compressor is arranged at the first end, and at least one of the second gas compressor and the third gas compressor is arranged at the second end;
the air flow channel of the first compressor, the first air flow channel, the air flow channel of the second compressor, the second air flow channel and the air flow channel of the third compressor are sequentially connected in series.
2. The integrated, multi-stage compressor of claim 1, wherein the second and third compressors are disposed back-to-back at the second end, the second compressor being located axially of the rotor shaft between the motor housing and the third compressor.
3. The integrated, multi-stage compressor of claim 2 wherein the first air flow path comprises a flow path opening in the motor housing, the flow path communicating between the exhaust port of the first compressor and the intake port of the second compressor.
4. The integrated multi-stage compressor according to claim 2, wherein the first air flow passage comprises a first air guide pipe section and a first flow passage section, the first air guide pipe section is arranged outside the motor casing, the first flow passage section is obliquely arranged on the casing of the second compressor and is communicated with the air inlet of the second compressor, and the first air guide pipe section is communicated with the first compressor and the first flow passage section.
5. The integrated, multi-stage compressor of claim 1, wherein the second and third compressors are disposed back-to-back at the second end, the third compressor being located axially along the rotor shaft 12 between the motor housing and the second compressor.
6. The integrated multi-stage compressor according to claim 5, wherein the second air flow channel comprises a second air duct section and a second air flow channel section, the second air duct section is disposed outside the motor casing, the second air flow channel section is obliquely disposed on the third compressor casing and is communicated with the air inlet of the third compressor, and the second air duct section is communicated with the second compressor and the second air flow channel section.
7. The integrated, multi-stage compressor of claim 1, wherein the first end and the second end each extend outside the motor housing, the first compressor and the third compressor being disposed back-to-back at the first end, the third compressor being located between the motor housing and the first compressor.
8. The integrated, multi-stage compressor of claim 7 wherein the second airflow path comprises a flow path opening in the motor housing, the second airflow path communicating between the discharge of the second compressor and the inlet of the third compressor.
9. The integrated multi-stage compressor of any one of claims 1-8, further comprising a first cooler disposed in series between the first compressor and the second compressor or between the second compressor and the third compressor.
10. The integrated, multi-stage compressor of claim 9, further comprising a second cooler, the first cooler being disposed in series between the first compressor and the second compressor, the second cooler being disposed in series between the second compressor and the third compressor.
11. The integrated multi-stage compressor according to any one of claims 1 to 8, wherein the motor housing defines a cooling channel therein.
12. The integrated multi-stage compressor according to any one of claims 1 to 8, wherein the rotor shaft includes a first stage, a second stage and a third stage connected in sequence, the second stage is disposed in the accommodation chamber, a hub sleeve of the first compressor is disposed in the first stage, a hub of at least one of the second compressor and the third compressor is disposed in the third stage, a cross-sectional area of the second stage is larger than that of the first stage, and a cross-sectional area of the second stage is larger than that of the third stage.
13. A compressor train comprising an integrated multi-stage compressor according to any one of claims 1 to 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211260080.5A CN115573927A (en) | 2022-10-14 | 2022-10-14 | Integrated multi-stage compressor and compressor unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211260080.5A CN115573927A (en) | 2022-10-14 | 2022-10-14 | Integrated multi-stage compressor and compressor unit |
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| CN115573927A true CN115573927A (en) | 2023-01-06 |
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| CN202211260080.5A Pending CN115573927A (en) | 2022-10-14 | 2022-10-14 | Integrated multi-stage compressor and compressor unit |
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| CN (1) | CN115573927A (en) |
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| CN113833676A (en) * | 2021-09-16 | 2021-12-24 | 势加透博洁净动力如皋有限公司 | Air compressor |
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| CN114370411A (en) * | 2020-10-15 | 2022-04-19 | 海德韦尔(太仓)能源科技有限公司 | Air compressor, multistage air compressor, and hydrogen fuel cell |
| CN216381893U (en) * | 2021-12-30 | 2022-04-26 | 势加透博洁净动力如皋有限公司 | Two-stage supercharging centrifugal compressor |
| CN114526262A (en) * | 2022-03-15 | 2022-05-24 | 势加透博（上海）能源科技有限公司 | Volute component and air compressor |
| CN216842278U (en) * | 2022-03-26 | 2022-06-28 | 势加透博洁净动力如皋有限公司 | Single-stage centrifugal compressor with turbine energy recovery function |
| CN218439807U (en) * | 2022-07-29 | 2023-02-03 | 势加透博洁净动力如皋有限公司 | Centrifugal compressor and compressor set with same |
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2022
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| JPH03115795A (en) * | 1989-09-29 | 1991-05-16 | Agency Of Ind Science & Technol | Centrifugal compressor |
| CN1281099A (en) * | 1999-07-15 | 2001-01-24 | 三星Techwin业株式会社 | Turbo-compressor |
| JP2015190383A (en) * | 2014-03-28 | 2015-11-02 | 株式会社Ihi | Centrifugal compressor and multistage compressor device |
| CN114370411A (en) * | 2020-10-15 | 2022-04-19 | 海德韦尔(太仓)能源科技有限公司 | Air compressor, multistage air compressor, and hydrogen fuel cell |
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| CN113833693A (en) * | 2021-09-16 | 2021-12-24 | 势加透博洁净动力如皋有限公司 | Compressor turbine volute and air compressor with same |
| CN113833676A (en) * | 2021-09-16 | 2021-12-24 | 势加透博洁净动力如皋有限公司 | Air compressor |
| CN113898596A (en) * | 2021-10-20 | 2022-01-07 | 白景波 | Multistage centrifugal compressor |
| CN114165462A (en) * | 2021-11-01 | 2022-03-11 | 广州市昊志机电股份有限公司 | Centrifugal air compressor and fuel cell system |
| CN216381893U (en) * | 2021-12-30 | 2022-04-26 | 势加透博洁净动力如皋有限公司 | Two-stage supercharging centrifugal compressor |
| CN114526262A (en) * | 2022-03-15 | 2022-05-24 | 势加透博（上海）能源科技有限公司 | Volute component and air compressor |
| CN216842278U (en) * | 2022-03-26 | 2022-06-28 | 势加透博洁净动力如皋有限公司 | Single-stage centrifugal compressor with turbine energy recovery function |
| CN218439807U (en) * | 2022-07-29 | 2023-02-03 | 势加透博洁净动力如皋有限公司 | Centrifugal compressor and compressor set with same |
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