Compression unit, compressor, thermal management system and vehicle

Abstract

The utility model discloses a compression unit, a compressor, a heat management system and a vehicle, the compression unit comprises a first scroll plate and a second scroll plate, the first scroll plate comprises a first bottom plate and a plurality of first scroll teeth arranged on the first bottom plate, and the second scroll plate comprises a second bottom plate and a plurality of second scroll teeth arranged on the second bottom plate; a plurality of compression channels are formed by the first scroll teeth, the first bottom plate or the second bottom plate is provided with a plurality of exhaust holes communicated with the compression channels respectively, the second scroll teeth are arranged on the compression channels respectively, and the second scroll teeth and the first scroll teeth move relatively to compress fluid located in the compression channels. According to the compression unit, the multiple compression channels and the multiple exhaust holes which correspond to one another are formed, fluid compression and discharge can be conducted through the multiple compression channels, and the clearance volume of the compressor can be reduced.

Description

Technical Field

[0001] The present application relates to the field of compressor technology, and in particular to a compression unit, a compressor, a thermal management system and a vehicle. Background Art

[0002] The scroll compressor is the core component of the thermal management system of electric vehicles. Its structure and performance affect the energy consumption, noise and vibration level of the whole vehicle. The improvement of people's living standards and the thermal management requirements of electric vehicles have put forward higher requirements for the performance, noise and vibration of the compressor.

[0003] In the multi-scroll compression structure in the related art, the multi-scroll structure does not allow the tooth heads to be too close to each other, so this design method causes the clearance volume of the compressor to be larger. Utility Model Content

[0004] An object of the present application is to provide a compression unit.

[0005] Another object of the present application is to provide a compressor.

[0006] Another object of the present application is to provide a thermal management system.

[0007] Yet another object of the present application is to provide a vehicle.

[0008] According to an embodiment of the present application, a compression unit includes a first scroll plate and a second scroll plate, the first scroll plate includes a first base plate and a plurality of first scroll teeth arranged on the first base plate, the second scroll plate includes a second base plate and a plurality of second scroll teeth arranged on the second base plate, the plurality of first scroll teeth construct a plurality of compression channels, the first base plate or the second base plate is provided with a plurality of exhaust holes respectively connected to the plurality of compression channels, the plurality of second scroll teeth are arranged in the plurality of compression channels, and the second scroll teeth move relative to the first scroll teeth to compress the fluid located in the compression channels.

[0009] According to the compression unit of the embodiment of the present application, there are multiple compression channels and multiple exhaust holes corresponding to each other, and the multiple compression channels can be used to compress and discharge the fluid respectively, which can reduce the clearance volume of the compressor.

[0010] In addition, the compression unit according to the above embodiment of the present application may also have the following additional technical features:

[0011] In some embodiments, the first scroll is configured as a fixed scroll, the second scroll is configured as a movable scroll, and the second scroll moves around the axis of the first scroll with a fixed orbital radius; and / or, the first scroll is configured as a movable scroll, the second scroll is configured as a fixed scroll, and the first scroll moves around the axis of the second scroll with a fixed orbital radius.

[0012] In some embodiments, the multiple exhaust holes are arranged on the static scroll; and / or, the compression unit also includes a crankshaft, the crankshaft includes a main journal and a connecting rod journal, the main journal is rotatably connected to the static scroll, and the connecting rod journal is rotatably connected to the movable scroll; and / or, the static scroll is provided with a central through hole, and the multiple exhaust holes are distributed around the central through hole.

[0013] In some embodiments, the plurality of exhaust holes are arranged around an axis of the fixed scroll.

[0014] In some embodiments, the inner end of the compression channel is closed, and the exhaust hole is connected to the corresponding inner end of the compression channel; and / or the plurality of first vortex teeth are distributed along the circumference of the first base plate, and the compression channel with a closed inner end is constructed between adjacent first vortex teeth.

[0015] In some embodiments, the first scroll plate also includes a protrusion, which is provided on the first bottom plate, and the plurality of first scroll teeth are connected to the protrusion and are arranged around the protrusion to construct 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 construct a discrete multi-tooth structure.

[0016] 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.

[0017] In some embodiments, the first scroll tooth includes a first tooth head correction segment, a first inner involute segment, a first tooth tail connecting segment and a first outer involute segment, and the first tooth head correction segment of one of the adjacent first scroll teeth is connected to the first outer involute segment of another adjacent first scroll teeth, so as to close the inner end of the compression channel formed between the adjacent first scroll teeth.

[0018] 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 involute or an algebraic spiral; and / or, the first outer involute segment is set as a circular involute, a triangular involute, a straight 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 a smooth curve; 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, the contour of the contour of the first base plate is taken as the first reference plane, the projection area of ​​the multiple first scroll teeth on the first reference plane is A1, and the contour area of ​​the first base plate is A2, wherein the ratio of A1 to A2 is greater than 1%.

[0019] In some embodiments, the second scroll 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 to the second outer involute segment.

[0020] 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 involute or an algebraic spiral; and / or, the second outer involute segment is set to a circular involute, a triangular involute, a straight 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 a smooth curve; 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 contour of the contour of the second base plate as the second reference plane, the projection area of ​​the multiple second scroll teeth on the second reference plane is A3, and the contour area of ​​the second base plate is A4, wherein the ratio of A3 to A4 is greater than 1%.

[0021] In some embodiments, at least two of the plurality of first scroll teeth have a phase difference in coordination with the corresponding second scroll teeth.

[0022] In some embodiments, the coordination between the multiple first vortex teeth and the corresponding second vortex teeth has a phase difference, and the coordination phase difference α between the first vortex teeth and the corresponding second vortex teeth adjacent in time satisfies, α=360° / i, where i is the number of the first vortex teeth.

[0023] According to the compressor of the embodiment of the present application, the compressor includes a driving member and at least one compression unit, the compression unit is the aforementioned compression unit, and the driving member is drivingly connected to the compression unit.

[0024] A thermal management system according to an embodiment of the present application includes the aforementioned compressor.

[0025] According to an embodiment of the present application, the vehicle includes the aforementioned compression unit; or includes the aforementioned compressor; or includes the aforementioned thermal management system. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of a compression unit according to an embodiment of the present application.

[0027] Figure 2 is a side view of a compression unit according to an embodiment of the present application.

[0028] Figure 3 yes Figure 2 Cross-sectional view of the middle section AA.

[0029] Figure 4 It is a schematic diagram of one direction of the first scroll plate of the compression unit of one embodiment of the present application.

[0030] Figure 5 It is a schematic diagram of the first scroll plate of the compression unit in another direction of an embodiment of the present application.

[0031] Figure 6 It is a schematic diagram of one direction of the second scroll of the compression unit of one embodiment of the present application.

[0032] Figure 7 It is a schematic diagram of another direction of the second scroll of the compression unit of one embodiment of the present application.

[0033] Figure 8 It is a schematic diagram of another direction of the second scroll plate of the compression unit of one embodiment of the present application.

[0034] Fig. 9 It is a schematic diagram of the first scroll of the compression unit according to another embodiment of the present application.

[0035] Fig.10 It is a schematic diagram of the second scroll of the compression unit according to another embodiment of the present application.

[0036] Figures 11 to 14 1 is a schematic diagram of the cooperation between the first scroll and the second scroll of a compression unit according to an embodiment of the present application, wherein: Figures 11 to 14 It is a process of dynamic coordination in chronological order.

[0037] Fig.15 It is a schematic diagram of one direction of the first scroll plate of the compression unit of one embodiment of the present application.

[0038] Fig.16 It is a schematic diagram of the first scroll plate of the compression unit in another direction of an embodiment of the present application.

[0039] Fig.17 It is a schematic diagram of one direction of the second scroll of the compression unit of one embodiment of the present application.

[0040] Fig.18 It is a schematic diagram of another direction of the second scroll of the compression unit of one embodiment of the present application.

[0041] Fig.19 It is a schematic diagram of another direction of the second scroll plate of the compression unit of one embodiment of the present application.

[0042] Fig. 20 This is a rotation angle-torque comparison diagram of a compression unit and a single-tooth scroll structure according to an embodiment of the present application.

[0043] Fig.21 This is a comparison diagram of the rotation angle and exhaust mass flow rate of a compression unit and a single-tooth scroll structure according to an embodiment of the present application.

[0044] Figure markings: compression unit 10, first scroll plate 11, first base plate 111, first scroll tooth 112, first tooth head correction section 1121, first inner involute segment 1122, first tooth tail connecting section 1123, first outer involute segment 1124, second scroll plate 12, second base plate 121, second scroll tooth 122, second tooth head correction section 1221, second inner involute segment 1222, second tooth tail connecting section 1223, second outer involute segment 1224, compression channel 1001, exhaust hole 1002, convex portion 1003, first center through hole 1004, second center through hole 1005. DETAILED DESCRIPTION

[0045] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0046] like Figures 1 to 3According to the compression unit 10 of the embodiment of the present application, it 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. The plurality of first scroll teeth 112 are arranged 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. The plurality of second scroll teeth 122 are arranged on the second bottom plate 121. The plurality of first scroll teeth 112 construct 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. The plurality of exhaust holes 1002 are respectively connected to the plurality of compression channels 1001. The plurality of second scroll teeth 122 are arranged in the plurality of compression channels 1001. The second scroll teeth move relative to the first scroll teeth to compress the fluid located in the compression channels.

[0047] The plurality of first scroll teeth 112 and the plurality of second scroll teeth 122 are respectively configured to form a scroll compression structure, and respectively drive the fluid of the corresponding compression channel 1001 to flow to the corresponding exhaust holes 1002. The processes of compressing the fluid in the plurality of compression channels 1001 are relatively independent, which can reduce the mutual influence of the fluid compression processes in the plurality of compression channels 1001, and can reduce the clearance volume of the compression unit 10, thereby improving the performance of the compression unit 10. In addition, compared with the solution of discharging the fluid of the plurality of compression channels 1001 through the same opening, the present application exhausts the fluid through the plurality of exhaust holes 1002, which can avoid or reduce the problems such as turbulence caused by the fluid converging at the same opening and affecting the compression performance.

[0048] In the present application, the number of the first scroll teeth 112 can be two, three, four, six, etc., the number of the second scroll teeth 122 can be the same as the number of the first scroll teeth 112, and the number of the compression channels 1001 can be the same as the number of the first scroll teeth 112. The compression unit 10 of the present application includes but is not limited to the following examples. The present application adopts a multi-tooth scroll structure, which utilizes the characteristics of the multi-tooth. Compared with the traditional positive displacement compressor, it has fewer moving parts, simpler assembly, less vibration and noise, smaller overall structural size, and a smoother energy conversion process.

[0049] Example 1, the first scroll 11 is a fixed scroll, and the number of the first scroll teeth 112 is two, and two compression channels 1001 are constructed between the two first scroll teeth 112, which are the first channel and the second channel respectively; the second scroll 12 is a movable scroll, and the number of the second scroll teeth 122 is two, one of which is arranged in the first channel and cooperates with the two adjacent first scroll teeth 112. When the second scroll 12 translates around the axis of the first scroll 11 with a fixed orbital radius, the fluid in the first channel is driven 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, and when the second scroll 12 translates around the axis of the first scroll 11 with a fixed orbital radius, the fluid in the second channel is driven to flow to the corresponding exhaust hole 1002.

[0050] In Example 2, the first scroll 11 is a stationary scroll, and the number of the first scroll teeth 112 is three, and three compression channels 1001 are constructed between the three first scroll teeth 112, namely the first channel, the second channel and the third channel; the second scroll 12 is a movable scroll, 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 two adjacent first scroll teeth 112. When the second scroll disk 12 translates around the axis of the first scroll disk 11 with a fixed orbital radius, the fluid in the first channel is driven to flow to the corresponding exhaust hole 1002; the second second scroll tooth 122 is arranged in the second channel and cooperates with the two adjacent first scroll teeth 112. When the second scroll disk 12 translates around the axis of the first scroll disk 11 with a fixed orbital radius, the fluid in the second channel is driven to flow to the corresponding exhaust hole 1002; the third second scroll tooth 122 is arranged in the third channel and cooperates with the two adjacent first scroll teeth 112. When the second scroll disk 12 translates around the axis of the first scroll disk 11 with a fixed orbital radius, the fluid in the third channel is driven to flow to the corresponding exhaust hole 1002.

[0051] In some embodiments, Figure 3 , Figure 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. When the first scroll 11 and the second scroll 12 cooperate 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. Multiple compression channels 1001 can be separated, and each compression channel 1001 is independently exhausted through the corresponding exhaust hole 1002, which can reduce the influence of multiple compression channels 1001 on each other. Multiple first volutes 112 can be distributed along the circumference of the first bottom plate 111, and compression channels 1001 will be formed between adjacent first volutes 112, and the inner ends of the compression channels 1001 constructed between adjacent first volutes 112 are closed.

[0052] In addition, if Figure 4 and Figure 5 The first scroll plate 11 also includes a protrusion 1003, which is arranged on the first bottom plate 111. A plurality of first scroll teeth 112 are connected to the protrusion 1003 and are arranged around the protrusion 1003 to form an integrated multi-tooth structure. The inner end of the compression channel 1001 constructed between adjacent first scroll teeth 112 can be closed by the protrusion 1003, and the connection of the protrusion 1003 can improve the structural strength of the plurality of first scroll teeth 112 and the first scroll teeth 112 and the first bottom plate 111.

[0053] In some embodiments, Figure 6 and Figure 7 The plurality of second volutes 122 are distributed along the circumference of the second bottom plate 121, and the adjacent second volutes 122 are spaced apart to form a vertical multi-tooth structure, so that the plurality of second volutes 122 and the plurality of first volutes 112 can respectively cooperate with each other to compress the fluid.

[0054] In some embodiments, Fig. 9 , the first scroll plate 11 is provided with a first central through hole 1004, and a plurality of first scroll teeth 112 are distributed around the first central through hole 1004; and / or, as Fig.10 , the second scroll plate 12 is provided with a second central through hole 1005, and a 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 passed through the first central through hole 1004 and the second central through hole 1005, so that when the crankshaft rotates, the first scroll plate 11 and the second scroll plate 12 are driven to perform relative translational motion. In this way, the crankshaft can be used to connect and pass through the compression unit 10, so that multiple compression units 10 can be connected by crankshaft transmission.

[0055] Of course, the first scroll 11 may not be provided with the first center through hole 1004, and the end of the crankshaft may be connected to the first scroll 11; or, the second scroll 12 may not be provided with the second center through hole 1005, and the end of the crankshaft may be connected to the second scroll 12.

[0056] In some embodiments, Figure 5 The first volute 112 includes a first tooth head correction section 1121, a first inner involute section 1122, a first tooth tail connection section 1123, and a first outer involute section 1124. The first tooth head correction section 1121 of one of the adjacent first volutes 112 is connected to the first outer involute section 1124 of the other, so as to close the inner end of the compression channel 1001 formed between the adjacent first volutes 112. The first volute 112 and the second volute 122 can be stably matched, the clearance volume of the tooth head part is eliminated, and the performance of the compressor is improved.

[0057] 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; and / or, the first inner involute segment 1122 is configured as a circular involute, a triangular involute, a straight involute or an algebraic spiral; and / or, the first outer involute segment 1124 is set to a circular involute, a triangular involute, a straight 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 parts that need to be matched with the corresponding curve of the second scroll disk 12, and therefore must be light 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 a smooth curve; and / or, the first tooth tail connection segment 1123 is configured as an arc, a straight line or any other type of line segment, and there is no restriction on its form because it does not need to participate in the matching; and / or, the contour of the contour of the first bottom plate 111 is the first reference plane, the projection area of ​​the plurality of first volute teeth 112 on the first reference plane is A1, and the contour area of ​​the first bottom plate 111 is A2, wherein the ratio of A1 to A2 is greater than 1%. It can facilitate the stable matching of the first volute tooth 112 and the second volute tooth 122, and improve the structural stability of the compression unit 10. In addition, the structural strength of the first volute tooth 112 can be improved while ensuring the displacement of the compressor.

[0058] In some embodiments, Figure 6 The second volute 122 includes a second tooth head correction section 1221, a second inner involute section 1222, a second tooth tail connection section 1223 and a second outer involute section 1224, and the second tooth head correction section 1221 is connected to the second outer involute section 1224. The first volute 112 and the second volute 122 can be stably matched, the clearance volume of the tooth head part is eliminated, and the performance of the compressor is improved.

[0059] In addition, the second tooth head correction segment 1221, the second inner involute segment 1222, and the second outer involute segment 1224 are the parts that need to be matched with the corresponding curve of the first scroll disk 11, and therefore 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; and / or, the second inner involute segment 1222 is configured as a circular involute, a triangular involute, a straight involute, or an algebraic spiral; and / or, the second outer involute segment 1224 is set to a circular involute, a triangular involute, a straight 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. The second tooth tail connection segment 1223 is configured as a circular arc, a straight line, or any other type of line segment. Since it does not need to participate in matching, there is no restriction on its form.

[0060] Optionally, the contour of the second bottom plate 121 is taken as the second reference plane, the projection area of ​​the plurality of second volutes 122 on the second reference plane is A3, the contour area of ​​the second bottom plate 121 is A4, wherein the ratio of A3 to A4 is greater than 1%. This can facilitate the stable matching of the first volute 112 and the second volute 122, thereby improving the structural stability of the compression unit 10. In addition, the structural strength of the first volute 112 can be improved while ensuring the displacement of the compressor.

[0061] In addition, combined Figure 3 , Figures 11 to 14 , at least two of the plurality of first scroll teeth 112 have a phase difference in cooperation with the corresponding second scroll teeth 122. With this arrangement, when at least two first scroll teeth 112 compress the fluid, the corresponding exhaust holes 1002 will not exhaust at the same time, so that the fluids in the plurality of compression channels 1001 will be discharged from the compression unit 10 in sequence, and the vibration caused by the plurality of exhaust holes 1002 emitting gas at the same time or stopping the emission of gas at the same time can be avoided.

[0062] Furthermore, the coordination between the plurality of first vortex teeth 112 and the corresponding second vortex teeth 122 has a phase difference, and the coordination phase difference α between the first vortex teeth 112 and the corresponding second vortex teeth 122 adjacent in timing satisfies, α=360° / i, where i is the number of the first vortex teeth 112 .

[0063] For example, the number of first scroll teeth 112 is 2, and the phase difference between the adjacent first scroll teeth 112 and the corresponding second scroll teeth 122 in timing is 180°. In other words, when the compression flow path corresponding to one first scroll tooth 112 is in the exhaust stage, the compression flow path corresponding to another first scroll tooth 112 is in the intake stage; for another example, the number of first scroll teeth 112 is 3, and the phase difference between the adjacent first scroll teeth 112 and the corresponding second scroll teeth 122 in timing is 120°. In other words, when the compression flow path corresponding to one first scroll tooth 112 is in the intake stage, the compression flow path corresponding to another first scroll tooth 112 is in the compression stage, and the compression flow path corresponding to one first scroll tooth 112 is in the exhaust stage; for another example, the number of first scroll teeth 112 is 4, and the phase difference between the adjacent first scroll teeth 112 and the corresponding second scroll teeth 122 in timing is 90°. Of course, in the present application, the number of the first scroll teeth 112 may also be 5, 6, etc., which will not be elaborated in this application.

[0064] In the present application, one of the first scroll 11 and the second scroll 12 may be a fixed scroll, and the other may be a movable scroll. The movable scroll may move around the axis of the fixed scroll at a fixed orbital radius, thereby achieving compression of the fluid. The cooperation of the first scroll 11 and the second scroll 12 in the present application includes but is not limited to the following embodiments.

[0065] In one embodiment, in combination Figures 4 to 8 The first scroll 11 is configured as a fixed scroll, and the second scroll 12 is configured as a movable scroll. The second scroll 12 moves around the axis of the first scroll 11 at a fixed orbital radius.

[0066] For example, the first scroll plate 11 includes a first bottom 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 bottom plate 111 to form an integrated multi-tooth structure. In addition, the plurality of first scroll teeth 112 divide the space of the first bottom 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 separate four independent compression channels 1001, and each compression channel 1001 is provided with an exhaust hole 1002 near the center of the scroll plate.

[0067] The second scroll 12 includes a second bottom plate 121 and a plurality of second scroll teeth 122. A bearing seat for mounting a bearing is generally provided on the back of the second scroll 12. The plurality of second scroll teeth 122 are separated and do not intersect each other. There may be four second scroll teeth 122.

[0068] The matching process of the first scroll 11 and the second scroll 12 is as follows: Figures 11 to 14 As shown, the second scroll 12 translates around the center of the first scroll 11 with a fixed orbital radius (counterclockwise on the paper). The multiple second scroll teeth 122 of the second scroll 12 form multiple matching points with the multiple first scroll teeth 112 of the first scroll 11. When the matching structures of the multiple first scroll teeth 112 and the multiple second scroll teeth 122 are exactly the same, the displacement of each compression channel 1001 is 1 / N of the total displacement of the compression unit 10 (N is the number of the first scroll teeth 112 or the second scroll teeth 122). Multiple matching points divide the multiple compression channels 1001 into multiple crescent-shaped cavities. As the translation continues, the matching points move, the volume of the crescent cavity gradually decreases, compressing the refrigerant and doing work 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.

[0069] like Fig. 9 and Fig.10 In another example, it includes a first scroll 11 and a second scroll 12, the second scroll 12 is a discrete multi-tooth movable scroll, and the first scroll 11 is an integrated multi-tooth static scroll. The discrete multi-tooth movable scroll includes a plurality of second scroll teeth 122, a second bottom plate 121, and a second bearing hole; the integrated 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 channels 1001. The integrated multi-tooth static scroll also includes a first bearing hole. The above structure adds a support point to the crankshaft, that is, the crankshaft is supported by the first bearing hole of the integrated multi-tooth static scroll. The integrated multi-tooth static scroll has a large rigidity. Using this structure as a fulcrum will further improve the stability of the shaft system. In addition, the crankshaft can pass through a scroll assembly composed of a separate multi-toothed vortex orbiting scroll and an integrated multi-toothed vortex stationary scroll, providing a structural basis for a single crankshaft to drive multiple similar scroll assemblies.

[0070] In another embodiment, if Figures 15 to 19 The first scroll 11 is configured as a movable scroll, and the second scroll 12 is configured as a stationary scroll. The first scroll 11 moves translationally around the axis of the second scroll 12 at a fixed orbital radius.

[0071] For example, the first scroll 11 includes a first bottom plate 111 and a plurality of first scroll teeth 112. The first scroll teeth 112 converge at the center of the first scroll 11 to form an integrated multi-scroll tooth structure. A bearing seat for bearing installation is disposed on the back of the first scroll 11.

[0072] 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 channels 1001 .

[0073] The matching process of the first scroll 11 and the second scroll 12 can be referred to Figures 11 to 14 The compression unit 10 of the present application will significantly reduce the vibration and noise of the compressor.

[0074] In some embodiments, a plurality of exhaust holes 1002 are provided on the static scroll for exhausting the plurality of compression passages 1001. The compression unit 10 also includes a crankshaft, which includes a main journal and a connecting rod journal. The main journal is rotatably connected to the static scroll, and the connecting rod journal is rotatably connected to the movable scroll, which is used to drive the movable scroll to translate around the axis of the static scroll with a fixed radius. The static scroll is provided with a central through hole, and a 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 provide support for the crankshaft. At the same time, the exhaust holes 1002 are arranged around the central through hole to facilitate the exhaust of the compression unit 10 and avoid the crankshaft passing through the central through hole affecting the exhaust of the compression unit 10.

[0075] In some embodiments of the present application, Fig. 20 As shown, taking R134a refrigerant as an example, assuming that the compressor displacement is 34cc, the displacement of each compression channel 1001 is 8.5cc, the suction pressure is 0.3MPa, the exhaust pressure is 1.5MPa, the suction superheat is 10K, and the compressor speed is 3000rpm, then the gas torque pulsation value is 0.06N*m, and the traditional single-tooth scroll compressor is 1.26N*m, and the pulsation value is reduced by 95%. The obvious 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.

[0076] In other embodiments of the present application, Fig.21 As shown, taking R134a refrigerant as an example, assuming that the compressor displacement is 34cc, the displacement of each compression channel 1001 is 8.5cc, the suction pressure is 0.3MPa, the exhaust pressure is 1.5MPa, the suction superheat is 10K, and the compressor speed is 3000rpm, then the exhaust mass flow pulsation value is 0.010kg / s, while that of the traditional single-tooth scroll compressor is 0.056kg / s, and the pulsation value is reduced by 82%.

[0077] Additionally, in some embodiments, a plurality of exhaust holes 1002 are arranged around the axis of the fixed scroll.

[0078] In combination with the foregoing, in some embodiments of the present application, the tooth head area of ​​multiple vortex teeth on the fixed scroll adopts an integral structural design, and the corresponding movable scroll adopts a discrete multi-vortex tooth structure, which can reduce the clearance volume and improve the compressor performance.

[0079] In addition, the first scroll plate 11 in the present application forms a plurality of compression channels 1001, each of which is equipped with an exhaust hole 1002 and an exhaust structure. Each compression channel 1001 forms an independent compression process, which will effectively reduce the gas exhaust mass flow pulsation, gas torque pulsation, and reduce the vibration of the compressor.

[0080] Of course, in some other embodiments of the present application, the tooth head area of ​​the movable scroll adopts an integral structural design, while the fixed scroll adopts a discrete multi-scroll tooth structure, which can also improve the performance of the compressor. In the present application, the tooth head area of ​​multiple vortex teeth on the movable scroll can be designed with an integral structural design, and the corresponding fixed scroll adopts a discrete multi-scroll tooth structure, which can reduce the clearance volume and improve the performance of the compressor. The tooth head area of ​​multiple vortex teeth on the movable scroll adopts an integral structural design, and the corresponding fixed scroll adopts a discrete multi-scroll tooth structure to form multiple compression channels 1001, and each compression channel 1001 is equipped with an exhaust hole 1002 and an exhaust structure. Each compression channel 1001 constitutes an independent compression process, which will effectively reduce the gas exhaust mass flow pulsation and gas torque pulsation, and reduce the vibration of the compressor.

[0081] In addition, in the above description, the example in which the number of first vortex teeth 112 is four and the number of second vortex teeth 122 is four is mainly used for illustration. This is not a limitation on the protection scope of the present application. The number of first vortex teeth 112 in the present application is not necessarily four, and may be greater than or equal to two. It should also be emphasized that the distribution of the plurality of first vortex teeth 112 along the circumference of the first scroll disk 11 in the present application may be uniform or uneven. In addition, the tooth width and length of the plurality of first vortex teeth 112 and the plurality of second vortex teeth 122 are not necessarily the same.

[0082] Among them, the scroll teeth in this application refer to: the structure formed by the scroll profile, and the scroll profile includes the tooth head correction curve, the involute and the tooth tail connection curve. The clearance volume in this application refers to: the volume that does not participate in the compression in the compression structure is the clearance volume. The clearance volume will reduce the isentropic efficiency and volumetric efficiency of the compressor, thereby reducing the performance of the compressor.

[0083] According to the compressor of the embodiment of the present application, it includes a driving member and at least one compression unit 10, the compression unit 10 is the aforementioned compression unit 10, and the driving member is in transmission connection with the compression unit 10. According to the thermal management system of the embodiment of the present application, it includes the aforementioned compressor. According to the vehicle of the embodiment of the present application, it includes the aforementioned compression unit; or includes the aforementioned compressor; or includes the aforementioned thermal management system. The compressor, thermal management system, vehicle, etc. provided in the present application, by utilizing the aforementioned compression unit 10 to compress the fluid, can have a plurality of compression channels 1001 and a plurality of exhaust holes 1002 corresponding to each other, and can utilize the plurality of compression channels 1001 to respectively compress and discharge the fluid, and can reduce the clearance volume of the compressor.

[0084] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0085] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0086] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0087] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean 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, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0088] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0089] 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 limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A compression unit (10), characterized in that: The invention comprises a first scroll (11) and a second scroll (12), wherein the first scroll (11) comprises a first bottom plate (111) and a plurality of first scroll teeth (112) arranged on the first bottom plate (111), and the second scroll (12) comprises a second bottom plate (121) and a plurality of second scroll teeth (122) arranged on the second bottom plate (121), wherein 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 connected to the plurality of compression channels (1001), the plurality of second scroll teeth (122) are arranged in the plurality of compression channels (1001), and the second scroll teeth move relative to the first scroll teeth to compress the fluid located in the compression channels.

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

3. The compression unit (10) according to claim 2, characterized in that The multiple exhaust holes (1002) are arranged on the fixed scroll; and / or, the compression unit (10) also includes a crankshaft, the crankshaft includes a main journal and a connecting rod journal, the main journal is rotatably connected to the fixed scroll, and the connecting rod journal is rotatably connected to the movable scroll; and / or, the fixed scroll is provided with a central through hole, and the multiple exhaust holes (1002) are distributed around the central through hole.

4. The compression unit (10) according to claim 1, characterized in that The inner end of the compression channel (1001) is closed, and the exhaust hole (1002) is connected to the corresponding inner end of the compression channel (1001); and / or the plurality of first volute teeth (112) are distributed along the circumference of the first bottom plate (111), and the compression channel (1001) with a closed inner end is constructed between adjacent first volute teeth (112).

5. The compression unit (10) according to any one of claims 1 to 4, characterized in that: The first scroll plate (11) further comprises a protrusion (1003), wherein the protrusion (1003) is arranged on the first bottom plate (111), and the plurality of first scroll teeth (112) are connected to the protrusion (1003) and arranged around the protrusion (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 discrete multi-tooth structure.

6. The compression unit (10) according to any one of claims 1 to 4, characterized in that: 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 to 4, characterized in that: The first scroll tooth (112) comprises a first tooth head correction section (1121), a first inner involute section (1122), a first tooth tail connecting section (1123) and a first outer involute section (1124); the first tooth head correction section (1121) of one of the adjacent first scroll teeth (112) is connected to the first outer involute section (1124) of the other one, so as to close 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, characterized in that 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 involute or an algebraic spiral; and / or, the first outer involute segment is set as a circular involute, a triangular involute, a straight 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, the contour of the first bottom plate (111) is located as the first reference plane, the projection area of ​​the multiple first scroll teeth (112) on the first reference plane is A1, and the contour 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 to 4, characterized in that: The second scroll tooth (122) comprises a second tooth head correction section (1221), a second inner involute section (1222), a second tooth tail connecting section (1223) and a second outer involute section (1224), wherein the second tooth head correction section (1221) is connected to the second outer involute section (1224).

10. The compression unit (10) according to claim 9, characterized in that 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 involute or an algebraic spiral; and / or, the second outer involute segment is set as a circular involute, a triangular involute, a straight 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 a smooth curve; 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, the contour of the contour of the second bottom plate (121) is taken as the second reference plane, the projection area of ​​the plurality of second volute teeth (122) on the second reference plane is A3, and the contour 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 claim 1, characterized in that At least two of the plurality of first volutes (112) have a phase difference in cooperation with the corresponding second volute (122).

12. The compression unit (10) according to claim 11, characterized in that The coordination between the plurality of first volute teeth (112) and the corresponding second volute teeth (122) has a phase difference, and the coordination phase difference α between the first volute teeth (112) and the corresponding second volute teeth (122) adjacent in time sequence satisfies α=360° / i, where i is the number of the first volute teeth (112).

13. A compressor, characterized in that: It comprises a driving member and at least one compression unit (10), wherein the compression unit (10) is the compression unit (10) according to claims 1 to 12, and the driving member is in driving connection with the compression unit (10).

14. A thermal management system, characterized in that: Comprising the compressor as claimed in claim 13.

15. A vehicle, characterized in that: It comprises the compression unit (10) according to any one of claims 1 to 12; or comprises the compressor according to claim 13; or comprises the thermal management system according to claim 14.

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