Compression unit, compressor, thermal management system and vehicle

Abstract

A compression unit (10), a compressor, a thermal management system and a vehicle. The compression unit (10) comprises a first scroll (11) and a second scroll (12), wherein the first scroll (11) comprises a first base plate (111) and a plurality of first scroll wraps (112) arranged on the first base plate (111); the second scroll (12) comprises a second base plate (121) and a plurality of second scroll wraps (112) arranged on the second base plate (121); the plurality of first scroll wraps (112) form a plurality of compression channels (1001); the first base plate (111) or the second base plate (121) is provided with a plurality of exhaust holes (1002) respectively in communication with the plurality of compression channels (1001); the plurality of second scroll wraps (122) are arranged in the plurality of compression channels (1001); and the second scroll wraps (122) and the first scroll wraps (112) move relative to each other to compress fluid in the compression channels (1001). Since the compression unit (10) is provided with a plurality of compression channels (1001) and a plurality of exhaust holes (1002) corresponding to each other, the compression unit (10) can use the plurality of compression channels (1001) to perform both fluid compression and discharge, thereby reducing the clearance volume of the compressor.

Description

Compression unit, compressor, thermal management system and vehicle

[0001] Cross Reference to Related Applications

[0002] The present application claims priority to the Chinese patent application No. 202420959672.4 filed on April 30, 2024, and entitled "Compression unit, compressor, thermal management system and vehicle", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of compressors, and in particular to a compression unit, a compressor, a thermal management system and a vehicle. BACKGROUND

[0004] The scroll compressor is a core component of the thermal management system of an electric vehicle, and its structure and performance affect the energy consumption, noise and vibration level of the vehicle. With the improvement of people's living standards and the requirements of the thermal management of electric vehicles, higher requirements are put forward for the performance, noise and vibration of the compressor.

[0005] In the multi-scroll tooth compression structure in the related art, the multi-scroll tooth structure does not allow the tooth heads to be too close to each other, and therefore this design method results in a large clearance volume of the compressor.

[0006] SUMMARY

[0007] One object of the present application is to provide a compression unit.

[0008] Another object of the present application is to provide a compressor.

[0009] Still another object of the present application is to provide a thermal management system.

[0010] Still another object of the present application is to provide a vehicle.

[0011] According to the compression unit of the present application, the first scroll plate includes a first bottom plate and a plurality of first scroll teeth arranged on the first bottom plate, the second scroll plate includes a second bottom plate and a plurality of second scroll teeth arranged on the second bottom plate, the plurality of first scroll teeth form a plurality of compression channels, the first bottom plate or the second bottom plate is provided with a plurality of exhaust holes respectively communicating with the plurality of compression channels, and the plurality of second scroll teeth are arranged in the plurality of compression channels. The second scroll teeth move relative to the first scroll teeth to compress the fluid in the compression channels.

[0012] According to the compression unit of the present application, there are a plurality of compression channels and a plurality of exhaust holes corresponding to each other, fluid compression and discharge can be performed respectively by using the plurality of compression channels, and the clearance volume of the compressor can be reduced.

[0013] In addition, the compression unit according to the above-mentioned embodiments of the present application can further have the following additional technical features:

[0014] In some embodiments, the first scroll plate is configured as a static scroll plate, and the second scroll plate is configured as a dynamic scroll plate, and the second scroll plate moves in translation around the axis of the first scroll plate at a fixed orbit radius; and / or, the first scroll plate is configured as a dynamic scroll plate, and the second scroll plate is configured as a static scroll plate, and the first scroll plate moves in translation around the axis of the second scroll plate at a fixed orbit radius.

[0015] In some embodiments, the plurality of exhaust holes are arranged on the static scroll plate; and / or, the compression unit further comprises a crankshaft, the crankshaft comprises a main journal and a connecting rod journal, the main journal is rotationally connected to the static scroll plate, and the connecting rod journal is rotationally connected to the dynamic scroll plate; and / or, the static scroll plate is provided with a central through hole, and the plurality of exhaust holes are distributed around the central through hole.

[0016] In some embodiments, the plurality of exhaust holes are arranged around the axis of the static scroll plate.

[0017] In some embodiments, the inner end of the compression channel is closed, and the exhaust hole is in communication with the inner end of the corresponding compression channel; and / or, the plurality of first scroll teeth are distributed along the circumference of the first bottom plate, and the compression channels with closed inner ends are formed between adjacent first scroll teeth.

[0018] In some embodiments, the first scroll plate further comprises a convex portion, the convex portion is arranged on the first bottom plate, the plurality of first scroll teeth are connected to the convex portion and arranged around the convex portion to form an integrated multi-tooth structure; and / or, the plurality of second scroll teeth are distributed along the circumference of the second bottom plate, and adjacent second scroll teeth are spaced apart to form a separate multi-tooth structure.

[0019] In some embodiments, the first scroll plate is provided with a first central through hole, and the plurality of first scroll teeth are distributed around the first central through hole; and / or, the second scroll plate is provided with a second central through hole, and the plurality of second scroll teeth are distributed around the second central through hole.

[0020] In some embodiments, the first scroll tooth comprises a first tooth head correction segment, a first inner involute segment, a first tooth tail connecting segment, and a first outer involute segment, the first tooth head correction segment of one of the adjacent first scroll teeth is connected to the first outer involute segment of the other, for closing the inner end of the compression channel formed between the adjacent first scroll teeth.

[0021] In some embodiments, the first tooth head correction segment is configured as a circular arc, a spline curve, a B-spline curve or an elliptical arc; and / or, the first inner involute segment is configured as a circular involute, a triangular involute, a straight line involute or an algebraic spiral; and / or, the first outer involute segment is configured as a circular involute, a triangular involute, a straight line involute or an algebraic spiral; and / or, the first tooth head correction segment, the first inner involute segment and the first outer involute segment are configured as smooth curves; and / or, the first tooth tail connecting segment is configured as a circular arc, a straight line or any other type of line segment; and / or, taking the profile in which the profile of the first bottom plate is located as a first reference plane, the projection area of the plurality of first spiral teeth on the first reference plane is A1, and the profile area of the first bottom plate is A2, wherein the ratio of A1 to A2 is greater than 1%.

[0022] In some embodiments, the second spiral tooth includes a second tooth head correction segment, a second inner involute segment, a second tooth tail connecting segment and a second outer involute segment, and the second tooth head correction segment is connected with the second outer involute segment.

[0023] In some embodiments, the second tooth head correction segment is configured as a circular arc, a spline curve, a B-spline curve or an elliptical arc; and / or, the second inner involute segment is configured as a circular involute, a triangular involute, a straight line involute or an algebraic spiral; and / or, the second outer involute segment is configured as a circular involute, a triangular involute, a straight line involute or an algebraic spiral; and / or, the second tooth head correction segment, the second inner involute segment and the second outer involute segment are configured as smooth curves; and / or, the second tooth tail connecting segment is configured as a circular arc, a straight line or any other type of line segment; and / or, taking the profile in which the profile of the second bottom plate is located as a second reference plane, the projection area of the plurality of second spiral teeth on the second reference plane is A3, and the profile area of the second bottom plate is A4, wherein the ratio of A3 to A4 is greater than 1%.

[0024] In some embodiments, the cooperation of at least two of the plurality of first spiral teeth with the corresponding second spiral tooth has a phase difference.

[0025] In some embodiments, the cooperation of the plurality of first spiral teeth with the corresponding second spiral tooth has a phase difference, and the phase difference α of the cooperation of the first spiral teeth adjacent in time sequence with the corresponding second spiral tooth satisfies α = 360° / i, where i is the number of the first spiral teeth.

[0026] The compressor according to the embodiments of the present application comprises the foregoing compression unit and a driving member, and the driving member is in transmission connection with the compression unit.

[0027] The thermal management system according to the embodiments of the present application comprises the foregoing compressor.

[0028] The vehicle according to an embodiment of the present application includes the compression unit described above; or includes the compressor described above; or includes the thermal management system described above. BRIEF DESCRIPTION OF DRAWINGS

[0029] Fig. 1 is a schematic view of a compression unit according to an embodiment of the present application.

[0030] Fig. 2 is a side view of the compression unit according to an embodiment of the present application.

[0031] Fig. 3 is a sectional view of section A-A in Fig. 2.

[0032] Fig. 4 is a schematic view of one direction of a first scroll of the compression unit according to an embodiment of the present application.

[0033] Fig. 5 is a schematic view of another direction of the first scroll of the compression unit according to an embodiment of the present application.

[0034] Fig. 6 is a schematic view of one direction of a second scroll of the compression unit according to an embodiment of the present application.

[0035] Fig. 7 is a schematic view of another direction of the second scroll of the compression unit according to an embodiment of the present application.

[0036] Fig. 8 is a schematic view of yet another direction of the second scroll of the compression unit according to an embodiment of the present application.

[0037] Fig. 9 is a schematic view of the first scroll of the compression unit according to another embodiment of the present application.

[0038] Fig. 10 is a schematic view of the second scroll of the compression unit according to another embodiment of the present application.

[0039] Figs. 11 to 14 are schematic views of the first scroll and the second scroll of the compression unit according to an embodiment of the present application, wherein Figs. 11 to 14 are sequentially dynamic mating processes.

[0040] Fig. 15 is a schematic view of one direction of the first scroll of the compression unit according to an embodiment of the present application.

[0041] Fig. 16 is a schematic view of another direction of the first scroll of the compression unit according to an embodiment of the present application.

[0042] Fig. 17 is a schematic view of one direction of the second scroll of the compression unit according to an embodiment of the present application.

[0043] Fig. 18 is a schematic view of another direction of the second scroll of the compression unit according to an embodiment of the present application.

[0044] Fig. 19 is a schematic view of yet another direction of the second scroll of the compression unit according to an embodiment of the present application.

[0045] Fig. 20 is a plot of corner-torque of a compression unit versus a single-tooth scroll structure according to an embodiment of the present application.

[0046] Fig. 21 is a plot of corner-exhaust mass flow of a compression unit versus a single-tooth scroll structure according to an embodiment of the present application.

[0047] Reference signs: compression unit 10, first scroll plate 11, first bottom plate 111, first scroll tooth 112, first tooth head correction segment 1121, first inner involute segment 1122, first tooth tail connection segment 1123, first outer involute segment 1124, second scroll plate 12, second bottom plate 121, second scroll tooth 122, second tooth head correction segment 1221, second inner involute segment 1222, second tooth tail connection segment 1223, second outer involute segment 1224, compression passage 1001, exhaust hole 1002, convex portion 1003, first center through hole 1004, second center through hole 1005. DETAILED DESCRIPTION

[0048] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like reference numerals and letters throughout the figures denote the same or like elements or elements with the same or similar function. The embodiments described below are exemplary and intended to explain the present application, and are not to be understood as limiting the present application.

[0049] As shown in Figs. 1-3, a compression unit 10 according to an embodiment of the present application includes a first scroll plate 11 and a second scroll plate 12. The first scroll plate 11 includes a first bottom plate 111 and a plurality of first scroll teeth 112 provided on the first bottom plate 111. The second scroll plate 12 includes a second bottom plate 121 and a plurality of second scroll teeth 122 provided on the second bottom plate 121. The plurality of first scroll teeth 112 form a plurality of compression passages 1001. The first bottom plate 111 or the second bottom plate 121 is provided with a plurality of exhaust holes 1002, which respectively communicate with the plurality of compression passages 1001. The plurality of second scroll teeth 122 are disposed in the plurality of compression passages 1001. The second scroll teeth move relative to the first scroll teeth to compress fluid in the compression passages.

[0050] The first scroll teeth 112 and the second scroll teeth 122 are respectively matched to form scroll compression structures, and respectively drive the fluid in the corresponding compression channels 1001 to flow to the corresponding exhaust holes 1002. The compression of the fluid in the plurality of compression channels 1001 is relatively independent, which can reduce the mutual influence of the fluid compression process in the plurality of compression channels 1001, and can reduce the clearance volume of the compression unit 10 and improve the performance of the compression unit 10. In addition, compared with the scheme of discharging the fluid in the plurality of compression channels 1001 through the same opening, the application can avoid or reduce the influence of the turbulence of the fluid gathered in the same opening on the compression performance.

[0051] The number of the first scroll teeth 112 in the application can be two, three, four, six, etc. The number of the second scroll teeth 122 can be the same as that of the first scroll teeth 112. The number of the compression channels 1001 can be the same as that of the first scroll teeth 112. The compression unit 10 of the application includes but is not limited to the following examples. The application adopts a multi-tooth scroll structure, which has the characteristics of multi-tooth, less moving parts, simple assembly, low vibration and noise, small overall structure size, and smooth energy conversion process compared with traditional positive displacement compressors.

[0052] For example 1, the first scroll plate 11 is a static scroll plate, and the number of the first scroll teeth 112 is two. Two compression channels 1001 are formed between the two first scroll teeth 112, which are respectively a first channel and a second channel. The second scroll plate 12 is a dynamic scroll plate, and the second scroll teeth 122 are two. One of the second scroll teeth 122 is arranged in the first channel and cooperates with the two adjacent first scroll teeth 112. When the second scroll plate 12 moves around the axis of the first scroll plate 11 at a fixed revolution radius, it drives the fluid in the first channel to flow to the corresponding exhaust hole 1002. The other second scroll tooth 122 is arranged in the second channel and cooperates with the two adjacent first scroll teeth 112. When the second scroll plate 12 moves around the axis of the first scroll plate 11 at a fixed revolution radius, it drives the fluid in the second channel to flow to the corresponding exhaust hole 1002.

[0053] In the example 2, the first scroll plate 11 is a static scroll plate, and the number of the first scroll teeth 112 is three. The three first scroll teeth 112 are configured to form three compression channels 1001, which are respectively a first channel, a second channel and a third channel. The second scroll plate 12 is a dynamic scroll plate, and the number of the second scroll teeth 122 is three. The first second scroll tooth 122 is arranged in the first channel and cooperates with the adjacent two first scroll teeth 112. When the second scroll plate 12 moves around the axis of the first scroll plate 11 at a fixed revolution radius, the first second scroll tooth 122 drives the fluid in the first channel to flow to the corresponding exhaust hole 1002. The second second scroll tooth 122 is arranged in the second channel and cooperates with the adjacent two first scroll teeth 112. When the second scroll plate 12 moves around the axis of the first scroll plate 11 at a fixed revolution radius, the second second scroll tooth 122 drives the fluid in the second channel to flow to the corresponding exhaust hole 1002. The third second scroll tooth 122 is arranged in the third channel and cooperates with the adjacent two first scroll teeth 112. When the second scroll plate 12 moves around the axis of the first scroll plate 11 at a fixed revolution radius, the third second scroll tooth 122 drives the fluid in the third channel to flow to the corresponding exhaust hole 1002.

[0054] In some embodiments, as shown in FIG. 3 and FIG. 4, the inner end of the compression channel 1001 is closed, and the exhaust hole 1002 is connected to the inner end of the corresponding compression channel 1001. During the cooperation of the first scroll plate 11 and the second scroll plate 12 to compress the fluid, the fluid will be driven to flow to the inner end of the compression channel 1001. When the inner end of the compression channel 1001 is closed, the fluid will be discharged through the corresponding exhaust hole 1002. The plurality of compression channels 1001 can be separated, and each compression channel 1001 can be independently discharged through the corresponding exhaust hole 1002, so as to reduce the influence between the plurality of compression channels 1001. The plurality of first scroll teeth 112 can be distributed along the circumference of the first bottom plate 111, and the compression channel 1001 will be formed between the adjacent first scroll teeth 112. The inner end of the compression channel 1001 formed between the adjacent first scroll teeth 112 is closed.

[0055] In addition, as shown in FIG. 4 and FIG. 5, the first scroll plate 11 further comprises a convex part 1003 arranged on the first bottom plate 111. The plurality of first scroll teeth 112 are connected to the convex part 1003 and arranged around the convex part 1003 to form an integrated multi-tooth structure. The inner end of the compression channel 1001 formed between the adjacent first scroll teeth 112 can be closed by the convex part 1003. The connection of the convex part 1003 can improve the structural strength of the plurality of first scroll teeth 112, the first scroll teeth 112 and the first bottom plate 111.

[0056] In some embodiments, as shown in FIGS. 6 and 7, a plurality of second scroll teeth 122 are distributed along the circumference of the second bottom plate 121, and adjacent second scroll teeth 122 are spaced apart to form a discrete multi-tooth structure. In order to facilitate the corresponding cooperation of the plurality of second scroll teeth 122 and the plurality of first scroll teeth 112, respectively, in order to compress the fluid.

[0057] In some embodiments, as shown in FIG. 9, the first scroll plate 11 is provided with a first central through hole 1004, and the plurality of first scroll teeth 112 are distributed around the first central through hole 1004.

[0058] In some embodiments, as shown in FIG. 10, the second scroll plate 12 is provided with a second central through hole 1005, and the plurality of second scroll teeth 122 are distributed around the second central through hole 1005. When the compression unit 10 is connected to the crankshaft, the crankshaft can be inserted through the first central through hole 1004 and the second central through hole 1005, so as to drive the relative translational motion of the first scroll plate 11 and the second scroll plate 12 when the crankshaft rotates. In this way, the plurality of compression units 10 can be connected by the crankshaft transmission.

[0059] Of course, the first scroll plate 11 can also not be provided with the first central through hole 1004, and the end of the crankshaft can be connected to the first scroll plate 11. The second scroll plate 12 can also not be provided with the second central through hole 1005, and the end of the crankshaft can be connected to the second scroll plate 12.

[0060] In some embodiments, as shown in FIG. 5, the first scroll tooth 112 includes a first tooth head correction segment 1121, a first inner involute segment 1122, a first tooth tail connecting segment 1123, and a first outer involute segment 1124. The first tooth head correction segment 1121 of one of the adjacent first scroll teeth 112 is connected to the first outer involute segment 1124 of the other, for closing the inner end of the compression channel 1001 formed between the adjacent first scroll teeth 112. The stable cooperation of the first scroll tooth 112 and the second scroll tooth 122 can be achieved, the clearance volume of the tooth head part is eliminated, and the performance of the compressor is improved.

[0061] In addition, the first tooth head correction segment 1121 is configured as a circular arc, a spline curve, a B-spline curve, or an elliptical arc.

[0062] In some embodiments, the first inner involute segment 1122 is configured as a circular involute, a triangular involute, a straight line involute, or an algebraic spiral.

[0063] In some embodiments, the first outer involute segment 1124 is configured as a circular involute, a triangular involute, a straight line involute, or an algebraic spiral.

[0064] In some embodiments, the first tooth head correction segment 1121, the first inner involute segment 1122, and the first outer involute segment 1124 are portions that need to cooperate with the corresponding curves of the second scroll plate 12, and thus must be smooth. Optionally, the first tooth head correction segment 1121, the first inner involute segment 1122, and the first outer involute segment 1124 are configured as smooth curves.

[0065] In some embodiments, the first tooth tail connection segment 1123 is configured as a circular arc, a straight line, or any other type of line segment, and is not limited in form because it does not need to participate in cooperation.

[0066] In some embodiments, the first base plate 111 is taken as a first reference plane, the projected area of the plurality of first scroll teeth 112 on the first reference plane is A1, and the profile area of the first base plate 111 is A2, wherein the ratio of A1 to A2 is greater than 1%. This can facilitate stable cooperation of the first scroll teeth 112 and the second scroll teeth 122, and improve the structural stability of the compression unit 10. In addition, the structural strength of the first scroll teeth 112 can be improved while ensuring the displacement of the compressor.

[0067] In some embodiments, as shown in FIG. 6, the second scroll teeth 122 include a second tooth head correction segment 1221, a second inner involute segment 1222, a second tooth tail connection segment 1223, and a second outer involute segment 1224, and the second tooth head correction segment 1221 is connected to the second outer involute segment 1224. This can achieve stable cooperation of the first scroll teeth 112 and the second scroll teeth 122, eliminate the clearance volume of the tooth head portion, and improve the performance of the compressor.

[0068] In addition, the second tooth head correction segment 1221, the second inner involute segment 1222, and the second outer involute segment 1224 are portions that need to cooperate with the corresponding curves of the first scroll plate 11, and thus must be smooth. The second tooth head correction segment 1221 is configured as a circular arc, a spline curve, a B-spline curve, or an elliptical arc.

[0069] In some embodiments, the second inner involute segment 1222 is configured as a circular involute, a triangular involute, a straight line involute, or an algebraic spiral.

[0070] In some embodiments, the second outer involute segment 1224 is configured as a circular involute, a triangular involute, a straight line involute, or an algebraic spiral.

[0071] In some embodiments, the second tooth head correction segment 1221, the second inner involute segment 1222, and the second outer involute segment 1224 are configured as smooth curves. The second tooth tail connection segment 1223 is configured as a circular arc, a straight line, or any other type of line segment, and is not limited in form because it does not need to participate in cooperation.

[0072] Optionally, taking the profile of the second bottom plate 121 as the second reference plane, the projection area of the plurality of second spiral teeth 122 on the second reference plane is A3, and the profile area of the second bottom plate 121 is A4, wherein the ratio of A3 to A4 is greater than 1%. The first spiral teeth 112 and the second spiral teeth 122 can be stably matched, and the structural stability of the compression unit 10 can be improved. In addition, the structural strength of the first spiral teeth 112 can be improved while ensuring the displacement of the compressor.

[0073] In addition, in combination with FIGS. 3, 11 to 14, the cooperation of at least two of the plurality of first spiral teeth 112 and the corresponding second spiral teeth 122 has a phase difference. Through this setting, when the at least two first spiral teeth 112 compress the fluid, the corresponding exhaust holes 1002 do not simultaneously exhaust, so that the fluid in the plurality of compression channels 1001 is sequentially discharged from the compression unit 10, and problems such as vibration caused by the simultaneous exhaust of the plurality of exhaust holes 1002 and the simultaneous stop of the exhaust can be avoided.

[0074] Further, the cooperation of the plurality of first spiral teeth 112 and the corresponding second spiral teeth 122 has a phase difference, and the phase difference α of the cooperation of the first spiral teeth 112 and the corresponding second spiral teeth 122 adjacent in time sequence satisfies α = 360° / i, where i is the number of the first spiral teeth 112.

[0075] For example, the number of the first spiral teeth 112 is 2, and the phase difference of the cooperation of the first spiral teeth 112 adjacent in time sequence and the corresponding second spiral teeth 122 is 180°, that is, when the compression flow passage corresponding to one first spiral tooth 112 is in the exhaust stage, the compression flow passage corresponding to another first spiral tooth 112 is in the suction stage; for another example, the number of the first spiral teeth 112 is 3, and the phase difference of the cooperation of the first spiral teeth 112 adjacent in time sequence and the corresponding second spiral teeth 122 is 120°, that is, when the compression flow passage corresponding to one first spiral tooth 112 is in the suction stage, the compression flow passage corresponding to another first spiral tooth 112 is in the compression stage, and the compression flow passage corresponding to another first spiral tooth 112 is in the exhaust stage; for another example, the number of the first spiral teeth 112 is 4, and the phase difference of the cooperation of the first spiral teeth 112 adjacent in time sequence and the corresponding second spiral teeth 122 is 90°. Of course, the number of the first spiral teeth 112 in the present application can also be 5, 6, etc., and the present application will not be described again.

[0076] In the present application, one of the first scroll plate 11 and the second scroll plate 12 can be a static scroll plate, and the other can be a dynamic scroll plate. The dynamic scroll plate can move along the axis of the static scroll plate at a fixed revolution radius, so as to realize compression of the fluid. The cooperation of the first scroll plate 11 and the second scroll plate 12 in the present application includes but is not limited to the following embodiments.

[0077] In one embodiment, in combination with FIG. 4 to FIG. 8, the first scroll plate 11 is configured as a stationary scroll plate, and the second scroll plate 12 is configured as a movable scroll plate, and the second scroll plate 12 moves in translation around the axis of the first scroll plate 11 at a fixed orbit radius.

[0078] For example, the first scroll plate 11 includes a first base plate 111 and a plurality of first scroll teeth 112, and the plurality of first scroll teeth 112 converge at the center of the first base plate 111 to form an integrated multi-tooth structure. In addition, the plurality of first scroll teeth 112 divide the space of the first base plate 111 into a plurality of independent compression channels 1001, and each compression channel 1001 is provided with an exhaust hole 1002 near the center of the first scroll plate 11. For example, the number of first scroll teeth 112 can be four, and the four first scroll teeth 112 will divide four independent compression channels 1001, and each compression channel 1001 is provided with an exhaust hole 1002 near the center of the scroll plate.

[0079] The second scroll plate 12 includes a second base plate 121 and a plurality of second scroll teeth 122, and the back of the second scroll plate 12 is generally provided with a bearing seat for mounting a bearing. The plurality of second scroll teeth 122 are separated from each other without intersection, and the second scroll teeth 122 can be four.

[0080] The matching process of the first scroll plate 11 and the second scroll plate 12 is shown in FIG. 11 to FIG. 14, and the second scroll plate 12 moves in translation around the center of the first scroll plate 11 at a fixed orbit radius (counterclockwise direction on the paper). The plurality of second scroll teeth 122 of the second scroll plate 12 respectively form a plurality of matching points with the plurality of first scroll teeth 112 of the first scroll plate 11. When the matching structure of the plurality of first scroll teeth 112 and the plurality of second scroll teeth 122 is completely the same, the displacement of each compression channel 1001 is 1 / N (N is the number of first scroll teeth 112 or second scroll teeth 122) of the total displacement of the compression unit 10. The plurality of matching points divide the plurality of compression channels 1001 into a plurality of crescent cavities. With the continuation of the translation, the matching points move, the volume of the crescent cavity gradually decreases, and the compression refrigerant is compressed and works on the refrigerant. As the volume of the refrigerant is compressed, its position gradually moves from the edge of the compression unit 10 to the center of the compression unit 10, close to the exhaust hole 1002.

[0081] As shown in FIG. 9 and FIG. 10, in another example, the first scroll 11 is a one-piece multi-tooth static scroll and the second scroll 12 is a split multi-tooth dynamic scroll. The split multi-tooth dynamic scroll includes a plurality of second scroll teeth 122, a second bottom plate 121, and a second bearing hole. The one-piece multi-tooth static scroll includes a plurality of first scroll teeth 112, a plurality of exhaust holes 1002, and a first bottom plate 111. The plurality of second scroll teeth 122 divide the compression space of the scroll into a plurality of compression passages 1001. The one-piece multi-tooth static scroll also includes a first bearing hole. The above structure adds a support point for the crankshaft, i.e. the first bearing hole of the one-piece multi-tooth static scroll supports the crankshaft, and the large rigidity of the one-piece multi-tooth static scroll further improves the stability of the shafting. In addition, the crankshaft can pass through the scroll assembly composed of the split multi-tooth scroll dynamic scroll and the one-piece multi-tooth scroll static scroll, providing a structural basis for driving multiple similar scroll assemblies with a single crankshaft.

[0082] In another embodiment, as shown in FIG. 15 to FIG. 19, the first scroll 11 is a dynamic scroll and the second scroll 12 is a static scroll. The first scroll 11 moves in a fixed orbit around the axis of the second scroll 12.

[0083] For example, the first scroll 11 includes a first bottom plate 111 and a plurality of first scroll teeth 112, which converge at the center of the first scroll 11 to form a one-piece multi-scroll tooth structure. The back of the first scroll 11 is provided with a bearing seat for bearing installation.

[0084] The second scroll 12 includes a second bottom plate 121 and a plurality of second scroll teeth 122, and also includes a plurality of exhaust holes 1002. The plurality of second scroll teeth 122 divide the space of the second scroll 12 into a plurality of compression passages 1001.

[0085] The matching process of the first scroll 11 and the second scroll 12 can refer to the process of FIG. 11 to FIG. 14. The compression unit 10 of the present application will significantly reduce the vibration and noise of the compressor.

[0086] In some embodiments, the plurality of exhaust holes 1002 are provided in the static scroll for the exhaust of the plurality of compression passages 1001. The compression unit 10 further includes a crankshaft, which includes a main journal and a connecting rod journal. The main journal is rotationally connected to the static scroll, and the connecting rod journal is rotationally connected to the dynamic scroll for driving the dynamic scroll to move in a fixed orbit around the axis of the static scroll. The static scroll is provided with a central through hole, and the plurality of exhaust holes 1002 are distributed around the central through hole. The central through hole can be used for the crankshaft to pass through, and the static scroll can be used to support the crankshaft, while the exhaust holes 1002 are arranged around the central through hole to facilitate the exhaust of the compression unit 10 and avoid the influence of the crankshaft passing through the central through hole on the exhaust of the compression unit 10.

[0087] In some embodiments of the present application, as shown in FIG. 20, taking R134a refrigerant as an example, assuming that the displacement of the compressor is 34 cc, the displacement of each compression channel 1001 is 8.5 cc, the suction pressure is 0.3 MPa, the discharge pressure is 1.5 MPa, the suction superheat is 10 K, and the compressor speed is 3000 rpm, then the gas torque pulsation value is 0.06 N*m, and the traditional single-tooth scroll compressor is 1.26 N*m, with a pulsation value decrease of 95%. The significant improvement of the gas torque pulsation value and the offset of the gas force will effectively improve the vibration and noise problems of the compressor.

[0088] In some other embodiments of the present application, as shown in FIG. 21, taking R134a refrigerant as an example, assuming that the displacement of the compressor is 34 cc, the displacement of each compression channel 1001 is 8.5 cc, the suction pressure is 0.3 MPa, the discharge pressure is 1.5 MPa, the suction superheat is 10 K, and the compressor speed is 3000 rpm, then the discharge mass flow pulsation value is 0.010 kg / s, and the traditional single-tooth scroll compressor is 0.056 kg / s, with a pulsation value decrease of 82%.

[0089] In addition, in some embodiments, the plurality of discharge holes 1002 are arranged around the axis of the static scroll.

[0090] In combination with the foregoing, in some embodiments of the present application, the tooth head region of the plurality of scroll teeth on the static scroll is designed in a unitary structure, and the corresponding dynamic scroll is designed in a discrete multi-scroll tooth structure, which can reduce the clearance volume and improve the performance of the compressor.

[0091] In addition, in the present application, the first scroll 11 constitutes a plurality of compression channels 1001, each of which is equipped with a discharge hole 1002 and a discharge structure. Each compression channel 1001 constitutes an independent compression process, which will effectively reduce the gas discharge mass flow pulsation and the gas torque pulsation, and reduce the vibration of the compressor.

[0092] Of course, in some other embodiments of the present application, the tooth head region of the dynamic scroll is designed in a unitary structure, and the static scroll is designed in a discrete multi-scroll tooth structure, which can also improve the performance of the compressor. In the present application, the tooth head region of the plurality of scroll teeth on the dynamic scroll can also be designed in a unitary structure, and the corresponding static scroll is designed in a discrete multi-scroll tooth structure, which can reduce the clearance volume and improve the performance of the compressor. The tooth head region of the plurality of scroll teeth on the dynamic scroll is designed in a unitary structure, and the corresponding static scroll is designed in a discrete multi-scroll tooth structure, which constitutes a plurality of compression channels 1001, each of which is equipped with a discharge hole 1002 and a discharge structure. Each compression channel 1001 constitutes an independent compression process, which will effectively reduce the gas discharge mass flow pulsation and the gas torque pulsation, and reduce the vibration of the compressor.

[0093] In addition, in the above description, the number of the first scroll teeth 112 is four and the number of the second scroll teeth 122 is four, which is not a limitation to the scope of the present application. The number of the first scroll teeth 112 in the present application is not necessarily four, and can be greater than or equal to two. It is also emphasized that the distribution of the plurality of first scroll teeth 112 along the circumference of the first scroll plate 11 can be uniform or non-uniform. In addition, the tooth width and length of the plurality of first scroll teeth 112 and the plurality of second scroll teeth 122 are not necessarily the same.

[0094] In the present application, the scroll tooth refers to a structure enveloped by a scroll profile, which includes a tooth head correction curve, an involute, and a tooth tail connection curve. The clearance volume in the present application refers to the volume in the compression structure that does not participate in compression, which is the clearance volume. The clearance volume will reduce the isentropic efficiency and volumetric efficiency of the compressor, thus reducing the performance of the compressor.

[0095] The compressor according to an embodiment of the present application includes the compression unit 10 described above and a driving member in driving connection with the compression unit 10. The thermal management system according to an embodiment of the present application includes the compressor described above. The vehicle according to an embodiment of the present application includes the compression unit described above, or includes the compressor described above, or includes the thermal management system described above. The compressor, the thermal management system, and the vehicle provided in the present application can have a plurality of compression channels 1001 and a plurality of exhaust holes 1002 corresponding to each other by compressing fluid by using the compression unit 10 described above, can respectively compress and discharge fluid by using the plurality of compression channels 1001, and can reduce the clearance volume of the compressor.

[0096] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0097] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0098] In this application, unless otherwise clearly indicated otherwise, the terms "mounting", "connected", "connecting", "fixed", "fixedly connected" and the like should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrated; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected via an intermediate medium; can be internal communication of two elements, or interaction between two elements, unless otherwise clearly indicated. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0099] In this application, unless otherwise clearly indicated, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0100] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in the specification and the features of different embodiments or examples without contradiction.

[0101] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A compression unit (10), wherein, The compressor unit (10) comprises a first scroll plate (11) and a second scroll plate (12), the first scroll plate (11) comprises a first bottom plate (111) and a plurality of first scroll teeth (112) arranged on the first bottom plate (111), the second scroll plate (12) comprises a second bottom plate (121) and a plurality of second scroll teeth (122) arranged on the second bottom plate (121), the plurality of first scroll teeth (112) form a plurality of compression channels (1001), the first bottom plate (111) or the second bottom plate (121) is provided with a plurality of exhaust holes (1002) respectively communicating with the plurality of compression channels (1001), and the plurality of second scroll teeth (122) are arranged in the plurality of compression channels (1001) and move relative to the first scroll teeth to compress fluid in the compression channels.

2. The compression unit (10) according to claim 1, wherein The first scroll plate (11) is configured as a static scroll plate, the second scroll plate (12) is configured as a dynamic scroll plate, and the second scroll plate (12) moves in translation around the axis of the first scroll plate (11) at a fixed orbit radius; and / or, the first scroll plate (11) is configured as a dynamic scroll plate, the second scroll plate (12) is configured as a static scroll plate, and the first scroll plate (11) moves in translation around the axis of the second scroll plate (12) at a fixed orbit radius.

3. The compression unit (10) according to claim 2, wherein The plurality of exhaust holes (1002) are arranged on the static scroll plate; and / or, the compressor unit (10) further comprises a crankshaft, the crankshaft comprises a main shaft journal and a connecting rod shaft journal, the main shaft journal is rotationally connected to the static scroll plate, and the connecting rod shaft journal is rotationally connected to the dynamic scroll plate; and / or, the static scroll plate is provided with a central through hole, and the plurality of exhaust holes (1002) are distributed around the central through hole.

4. The compression unit (10) according to any one of claims 1-3, wherein, The inner end of the compression channel (1001) is closed, and the exhaust hole (1002) communicates with the inner end of the corresponding compression channel (1001); and / or, the plurality of first scroll teeth (112) are distributed along the circumference of the first bottom plate (111), and the compression channels (1001) with closed inner ends are formed between adjacent first scroll teeth (112).

5. The compression unit (10) according to any one of claims 1-4, wherein, The first scroll plate (11) further comprises a convex portion (1003) arranged on the first bottom plate (111), the plurality of first scroll teeth (112) are connected to the convex portion (1003) and arranged around the convex portion (1003) to form an integrated multi-tooth structure; and / or, the plurality of second scroll teeth (122) are distributed along the circumference of the second bottom plate (121), and adjacent second scroll teeth (122) are spaced apart to form a separate multi-tooth structure.

6. The compression unit (10) according to any one of claims 1-5, wherein, The first scroll plate (11) is provided with a first central through hole (1004), and the plurality of first scroll teeth (112) are distributed around the first central through hole (1004); and / or, the second scroll plate (12) is provided with a second central through hole (1005), and the plurality of second scroll teeth (122) are distributed around the second central through hole (1005).

7. The compression unit (10) according to any one of claims 1-6, wherein, The first scroll tooth (112) comprises a first tooth head correction segment (1121), a first inner involute segment (1122), a first tooth tail connecting segment (1123), and a first outer involute segment (1124), the first tooth head correction segment (1121) of one of the adjacent first scroll teeth (112) is connected with the first outer involute segment (1124) of the other, for closing the inner end of the compression channel (1001) formed between the adjacent first scroll teeth (112).

8. The compression unit (10) according to claim 7, wherein The first tooth head correction segment (1121) is configured as a circular arc, a spline curve, a B-spline curve, or an elliptical arc; and / or, the first inner involute segment is configured as a circular involute, a triangular involute, a straight-line involute, or an algebraic spiral; and / or, the first outer involute segment is configured as a circular involute, a triangular involute, a straight-line involute, or an algebraic spiral; and / or, the first tooth head correction segment (1121), the first inner involute segment (1122), and the first outer involute segment (1124) are configured as smooth curves; and / or, the first tooth tail connecting segment (1123) is configured as a circular arc, a straight line, or any other type of line segment; and / or, taking the profile of the first bottom plate (111) as a first reference plane, the projection area of the plurality of first scroll teeth (112) on the first reference plane is A1, and the profile area of the first bottom plate (111) is A2, wherein the ratio of A1 to A2 is greater than 1%.

9. The compression unit (10) according to any one of claims 1-8, wherein, The second scroll tooth (122) comprises a second tooth head correction segment (1221), a second inner involute segment (1222), a second tooth tail connecting segment (1223), and a second outer involute segment (1224), the second tooth head correction segment (1221) is connected with the second outer involute segment (1224).

10. The compression unit (10) according to claim 9, wherein The second tooth head correction segment (1221) is configured as a circular arc, a spline curve, a B-spline curve, or an elliptical arc; and / or, the second inner involute segment is configured as a circular involute, a triangular involute, a straight-line involute, or an algebraic spiral; and / or, the second outer involute segment is configured as a circular involute, a triangular involute, a straight-line involute, or an algebraic spiral; and / or, the second tooth head correction segment (1221), the second inner involute segment (1222), and the second outer involute segment (1224) are configured as smooth curves; and / or, the second tooth tail connecting segment (1223) is configured as a circular arc, a straight line, or any other type of line segment; and / or, taking the profile of the second bottom plate (121) as a second reference plane, the projection area of the plurality of second scroll teeth (122) on the second reference plane is A3, and the profile area of the second bottom plate (121) is A4, wherein the ratio of A3 to A4 is greater than 1%.

11. The compression unit (10) according to any one of claims 1-10, wherein, The cooperation of at least two of the plurality of first scroll teeth (112) with the corresponding second scroll tooth (122) has a phase difference.

12. The compression unit (10) according to claim 11, wherein The matching of the plurality of first spiral teeth (112) and the corresponding second spiral teeth (122) has a phase difference, and the matching phase difference α of the time-sequentially adjacent first spiral teeth (112) and the corresponding second spiral teeth (122) satisfies α = 360° / i, wherein i is the number of the first spiral teeth (112).

13. A compressor, wherein, The compressor unit (10) according to any one of claims 1-12, and a driving member in driving connection with the compressor unit (10).

14. A thermal management system, wherein, The compressor according to claim 13.

15. A vehicle, wherein, The compressor unit (10) according to any one of claims 1-12; or the compressor according to claim 13; or the thermal management system according to claim 14.

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