Fluid jacket assembly for stator
By designing the fluid pockets, contraction parts and conduit structures of the fluid sheath assembly in the stator device, the problem of the difficulty in achieving simple assembly and efficient fluid guidance in the prior art is solved, and one-way guidance of the fluid and efficient heat transfer of the fluid are achieved.
Patent Information
- Application Number
- CN202380073870.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2022-10-20
- Filing Date
- 2023-10-17
- Publication Date
- 2025-06-13
AI Technical Summary
The existing fluid sheath assembly is difficult to achieve a modified fluid-guided configuration in a stator device without the need for additional mounting components.
A fluid sheath assembly is designed, including a fluid recess between the stator carrier and the enclosure member. The recess realizes unidirectional guidance of the fluid through the design of the contraction and the conduit, and ensures the circumferential flow of the fluid in the conduit through the coordination of the projection and flat sections.
An improved fluid-guided configuration of the fluid sheath assembly is realized, the assembly is relatively simple, no additional mounting components are required, and the heat transfer capability of the fluid is improved through the design of the shrinkage and projections.
Smart Images
Figure CN120153556A_ABST
Abstract
Description
[0001] Cross - reference to related applications
[0002] This application claims priority to U.S. Non - Provisional Application No. 17 / 969,897, filed on October 20, 2022, the entire disclosure of which is incorporated herein by reference. Technical Field
[0003] The present disclosure relates to fluid jacket assemblies, and more particularly to fluid jacket assemblies for stator devices. Background Art
[0004] Fluid jackets, also known herein as water jackets, are well - known and can be used in various applications to provide heat transfer characteristics. The fluid jacket can include cavities for circulating fluid, as well as inlets and outlets. The passageways defined within the fluid jacket can include separators or other flow - guiding components to ensure that the fluid flows according to a desired pattern or path.
[0005] There is a desire to provide a fluid jacket device having an improved fluid - guiding configuration that is relatively simple to assemble and does not require the installation of additional components. Summary of the Invention
[0006] A fluid jacket assembly is disclosed herein. The fluid jacket assembly can include: a stator carrier including an annular carrier body; and an enclosing member including an annular body. In one example, the enclosing member can be a jacket, or in another example, the enclosing member can be a housing. A fluid cavity can be defined between the stator carrier and the enclosing member. A first conduit can be configured to provide a flow path into the fluid cavity, and a second conduit can be configured to provide a flow path out of the fluid cavity. The fluid cavity can have a constriction at least in a region defined between the first conduit and the second conduit. The constriction can generally ensure that the fluid within the fluid cavity is circumferentially guided around the fluid cavity as it enters and exits the conduits.
[0007] At least one of the jacket or the stator carrier can include at least one protrusion configured to project into the fluid cavity. The protrusions can include a plurality of protrusions circumferentially spaced apart from each other. The protrusions can have an oval profile. At least one protrusion can be spaced apart from the constriction.
[0008] The constriction can be formed by a flat section of the enclosing member, and the annular body of the enclosing member can have a circular profile in a region away from the flat section.
[0009] A gap of 0.5 mm to 1.0 mm can be defined between the flat section of the enclosure component and the adjacent or facing surface of the annular carrier body of the stator carrier. In some embodiments, this distance can be 0 mm, or 0 mm to 0.5 mm. In one embodiment, this distance is 0.50 mm to 0.60 mm.
[0010] The sheath can define a first opening and a second opening. The first opening is configured to receive a portion of the first conduit, and the second opening is for receiving a portion of the second conduit. The conduits can be press-fitted within these openings to fix the conduits thereto. The first opening and the second opening can be formed on the flat section of the sheath.
[0011] Compared with the region of the fluid cavity away from the constriction, the constriction can reduce the area of the fluid cavity by at least 80%. This reduction can vary according to the specific requirements of the application.
[0012] In one example, the stator carrier and the sheath can be laser welded together. For example, a first welded connection can be defined between the radial section of the stator carrier and the axial section of the sheath, and a second welded connection can be defined between the axial section of the stator carrier and the radial section of the sheath.
[0013] In another configuration, a fluid sheath assembly is provided, which includes: a stator carrier including an annular carrier body; a sheath including an annular sheath body; and a fluid cavity defined between the stator carrier and the sheath, wherein the fluid cavity has a constriction defined by the flat section of the sheath. The sheath can include a plurality of protrusions configured to project into the fluid cavity. The plurality of protrusions can be defined around the entire circumference of the sheath in a region away from the constriction.
[0014] On the other hand, the constriction can be provided by a notch or a protrusion formed on the flat section of the sheath.
[0015] Compared with the region of the fluid cavity away from the constriction defined between the annular carrier body and the annular sheath body, the constriction can reduce the area of the fluid cavity by at least 85%. The protrusions can have an axial extent covering most of the radially outer surface of the sheath.
[0016] The stator carrier and the sheath can be laser welded together through the first welded connection and the second welded connection. The fluid cavity can be defined by the stator carrier in the radially inner direction, by the sheath in the radially outer direction, by the stator carrier in the first axial direction, and by the sheath in the second axial direction.
[0017] Additional embodiments are disclosed herein. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The foregoing Summary and the following Detailed Description will be better understood when read in conjunction with the accompanying drawings that illustrate preferred embodiments of the present disclosure. In the drawings:
[0019] Figure 1 is a perspective view of a fluid sheath assembly according to a first example.
[0020] Figure 2 is a perspective view of a fluid sheath assembly with a stator installed.
[0021] Figure 3 is a perspective view of a sheath for a fluid sheath assembly in a pre-installed state.
[0022] Figure 4 is a cross-sectional view of a region of the fluid sheath assembly that includes a conduit and a constriction, taken through the fluid sheath assembly.
[0023] Figure 5A is a cross-sectional view of a region of the fluid sheath assembly that includes a constriction, taken through the fluid sheath assembly.
[0024] Figure 5B is a cross-sectional view of a region of the fluid sheath assembly that is remote from the constriction, taken through the fluid sheath assembly.
[0025] Figure 6 is a perspective view of a stator carrier according to another embodiment.
[0026] Figure 7A is a perspective view of a fluid sheath assembly according to another embodiment.
[0027] Figure 7B is from Figure 7A a cross-sectional view of the fluid sheath assembly.
[0028] Figure 8A is a cross-sectional view of a fluid sheath assembly that includes a housing.
[0029] Figure 8B is through Figure 8A a cross-sectional view of a flat section of the housing of the fluid sheath assembly.
[0030] Figure 8C is Figure 8A and Figure 8B a perspective view of the housing. DETAILED DESCRIPTION
[0031] For convenience only, certain terms are used in the following description, and these terms are not restrictive. "Axial" refers to the direction along the axis (X) of the assembly. "Radial" refers to the direction inward and outward from the axis (X) of the assembly.
[0032] A reference to a list of items cited as "at least one of a, b, or c" (where a, b, and c represent the listed items) means any single one or combination of items a, b, or c. The term includes the specifically noted words above, derivatives of these words, and words of similar meaning.
[0033] As Figures 1 to 5B shown herein, a fluid sheath assembly 10 is disclosed. In one configuration, the fluid sheath assembly 10 is configured to use water as the fluid, but those of ordinary skill in the art will understand that other fluids or materials may be used.
[0034] The fluid sheath assembly 10 may include a stator carrier 20, which includes an annular carrier body 22. The fluid sheath assembly 10 may include an enclosing member that may be configured to be disposed radially outward from the stator carrier 20. In one example, the term enclosing member refers to a body, such as a sheath, a housing, a ring, or other structure that may be configured to be disposed concentrically around the stator carrier. The enclosing member may include a sheath 30 or a housing 230, the sheath including an annular sheath body 32, and the housing including an annular housing body 232.
[0035] In one example, the annular carrier body 22 may be disposed radially inward from the enclosing member. Those of ordinary skill in the art will understand that other means of the stator carrier 20 and the sheath 30 may be used, or in other configurations, there may be different components that perform similar functions to the stator carrier 20 and the sheath 30.
[0036] A fluid cavity 40 is generally defined between the stator carrier 20 and the enclosing member. The entire boundary of the fluid cavity 40 may be defined by the stator carrier 20 or the enclosing member. In one example, the fluid cavity 40 is defined by the stator carrier 20 in the radially inner direction, by the enclosing member in the radially outer direction, by the stator carrier 20 in a first axial direction, and by the enclosing member in a second axial direction.
[0037] A first conduit 50a may be configured to provide a flow path into the fluid cavity 40, and a second conduit 50b may be configured to provide a flow path out of the fluid cavity 40. The first conduit 50a and the second conduit 50b may generally be arranged adjacent to each other. In one example, the first conduit 50a and the second conduit 50b may define ports, inlets, or outlets that extend radially with respect to the fluid cavity 40. The first conduit 50a and the second conduit 50b may be formed as annular sleeves.
[0038] The fluid recess 40 can have a constriction 45 defined at least in a region between the first conduit 50a and the second conduit 50b. The constriction 45 can be defined as a reduced or restricted portion in the fluid recess 40, in which the boundary of the fluid recess 40 is smaller than the boundary in other circumferential regions of the fluid recess 40 between the stator carrier 20 and the enclosing member. The constriction 45 can include the narrowest region and the adjacent regions between the stator carrier 20 and the enclosing member. The constriction 45 can be provided via a relatively flat portion of the enclosing member and / or the stator carrier 20. For example, the constriction 45 can be formed via the flat section 35 of the sheath 30 or the flat section 235 of the housing 230.
[0039] The flat section 35 of the sheath 30 can include: an intermediate region 35a defined between the first conduit 50a and the second conduit 50b, a first end region 35b circumferentially outwardly defined relative to the first conduit 50a, and a second end region 35c circumferentially outwardly defined relative to the second conduit 50b. The first end region 35b and the second end region 35c can transition to the circular profile of the annular sheath body 32. In one example, the intermediate region 35a of the flat section 35 can have a range that is equal to or greater than the diameters of the first conduit 50a and the second conduit 50b. In one example, the portion of the annular carrier body 22 facing the flat section 35 can have a continuous circular profile. Thus, the flat section 35 can extend substantially tangentially to the annular carrier body 22, except for the gap (G) defined between the flat section and the annular carrier body.
[0040] At least one of the sheath 30 or the stator carrier 20 can include at least one protrusion 34 configured to project into the fluid recess 40. In Figure 2 and Figure 3 In one configuration shown, the sheath 30 includes the protrusion 34. In Figure 6 In another configuration shown, the stator carrier 120 includes the protrusion 134. In one configuration, both the sheath 30 and the stator carrier 20 can include protrusions. The housing 230 can also include protrusions, as will be understood by those of ordinary skill in the art from this disclosure.
[0041] The protrusion 34 can include a plurality of protrusions 34 circumferentially spaced apart from each other. In one example, the protrusion 34 can have an oval profile. The protrusion 34 can have an axial extent that covers most of the radially outer surface of the sheath 30. Those of ordinary skill in the art will understand that the shape, positioning, profile, length, depth, width, etc. of the protrusion 34 can vary. In one example, at least one protrusion 34 or a plurality of protrusions 34 can be spaced apart from the constriction 45.
[0042] In the region of the constriction 45, a clearance (G) of between 0.50 mm and 0.60 mm can be defined between the flat section 35 of the sheath 30 and the adjacent surface of the stator carrier 20. Those of ordinary skill in the art will understand that, in some examples, the clearance (G) can be zero, i.e., in some examples the flat section 35 is tangent to the annular carrier body 22. In other embodiments such as Figure 6 , Figure 7A and Figure 7B shown, the clearance (G) can be 0 mm.
[0043] The sheath 30 can define a first opening 36a and a second opening 36b. The first opening is configured to receive a portion of a first conduit 50a, and the second opening is for receiving a portion of a second conduit 50b. The first conduit 50a and the second conduit 50b can be press-fitted into the openings 36a, 36b defined in the sheath 30. The connection between the first conduit 50a and the second conduit 50b and the first opening 36a and the second opening 36b has a sealed joint or periphery such that fluid can flow through the first conduit 50a and the second conduit 50b via the first opening 36a and the second opening 36b. The first opening 36a and the second opening 36b can be formed in the flat section 35 of the sheath 30.
[0044] In one example, the constriction 45 reduces the area of the fluid cavity 40 by at least 80% compared to the region of the fluid cavity 40 remote from the constriction 45. In another example, the constriction 45 reduces the area of the fluid cavity 40 by at least 85% compared to the region of the fluid cavity 40 remote from the constriction 45.
[0045] The connection between the stator carrier 20 and the sheath 30 can be provided by a welded connection, such as a laser weld. In one configuration, a first welded connection 60a is defined between the radial section 28a of the stator carrier 20 and the axial section 38a of the sheath 30, and a second welded connection 60b is defined between the axial section 28b of the stator carrier 20 and the radial section 38b of the sheath 30. The specific joint for the welded connection between the stator carrier 20 and the sheath 30 can vary.
[0046] In one example, the stator carrier 20 and the sheath 30 can each be formed as stamped parts. Those of ordinary skill in the art will understand that only one of these parts can be a stamped part. At least one of the stator carrier 20 or the sheath 30 can be formed as a stamped steel part.
[0047] The stator carrier 20 can be configured to support, carry, or otherwise engage aspects of the stator. As Figure 2As shown in, the stator core 70 can be arranged radially inwardly from the stator carrier 20. In some examples, the stator core 70 can be held by a shrink fit / interference fit process.
[0048] Based on the configurations disclosed herein, thermal energy or heat from the stator core 70 can be transferred through the stator carrier 20 to the fluid within the fluid cavity 40, and thereby the stator core 70 can be cooled. The fluid can circulate through the fluid cavity 40 in a generally unidirectional circumferential flow path such that the fluid enters through one of the fluid conduits 50a, 50b and exits through the other of the fluid conduits 50a, 50b. The constriction 45 in the fluid cavity 40 promotes this unidirectional flow by effectively blocking fluid flow. The protrusion 34 promotes turbulent flow within the fluid cavity 40 to further increase the heat transfer capacity of the fluid cavity 40, thereby cooling the stator core 70. In Figure 4 Part of an exemplary flow path (P) is illustrated by the dashed line in. Those of ordinary skill in the art will understand that the exact flow path (P) can vary.
[0049] Those of ordinary skill in the art will understand that in some examples the protrusion 34 can be omitted. For example, as Figure 7A and Figure 7B shown in, the sheath 130 does not have any protrusions. In this embodiment, the sheath 130 can include a flat section 135 that includes a notch 137 in the middle region of the flat section 135. The notch 137 effectively divides the fluid cavity 140 into different sections or regions and can provide an effect similar to or the same as that of the constriction 45. In one example, instead of making the flat section 35 substantially tangent to the stator carrier 20, the notch 137 can directly contact the stator carrier 20 such that the gap (G) between the stator carrier 20 and the sheath 130 is 0 mm.
[0050] In one example as Figures 8A to 8C shown in, the enclosure member can include a housing 230 configured to surround the stator carrier 220. The housing 230 can include a flat section 235 defined along the inner surface of the annular housing body 232. In the installed state, when the housing 230 surrounds the stator carrier 220, a fluid cavity 240 is defined in the radial space between the stator carrier 220 and the housing 230. Along the fluid cavity 240, the flat section 235 is defined with a constriction 245 that has similar properties, functions, etc. to the constriction 45 described herein. Although not specifically illustrated, those of ordinary skill in the art will understand that seals, O-rings, and other joining components can be provided between the stator carrier 220 and the housing 230. Unless otherwise stated herein, Figures 8A to 8CAll other aspects of the embodiments are similar to the embodiments with the sheath 30. The housing 230 may also include openings 36a, 236b for defining a fluid inlet and a fluid outlet.
[0051] Accordingly, the present disclosure has been described in detail, and it should be understood and will be apparent to those skilled in the art that many physical changes can be made without changing the inventive concept and principles embodied herein, and only some of these physical changes are illustrated in the detailed description of the present invention.
[0052] It should also be understood that various embodiments that are only combined with a part of the preferred embodiments are possible, and these various embodiments will not change the inventive concept and principles embodied herein with respect to those parts.
[0053] Accordingly, the present embodiment and the alternative configurations are regarded as exemplary and / or illustrative in all respects and not restrictive, and the scope of the embodiment is indicated by the appended claims rather than by the foregoing description, and thus, all alternative embodiments and variations that fall within the equivalent meaning and scope of the claims will be included in the scope of the embodiment.
[0054] List of Reference Numerals
[0055] Fluid sheath assembly 10
[0056] Stator carrier 20, 120, 220
[0057] Annular carrier body 22
[0058] Radial section of the stator carrier 28a
[0059] Axial section of the stator carrier 28b
[0060] Sheath 30, 130
[0061] Annular sheath body 32
[0062] Protrusion 34, 134
[0063] Flat section 35, 135, 235
[0064] Middle region of the flat section 35a
[0065] End regions of the flat section 35b, 35c
[0066] First opening 36a, 236a
[0067] Second opening 36b, 236b
[0068] Axial section of the sheath 38a
[0069] The radial section 38b of the sheath
[0070] Fluid cavities 40, 240
[0071] Constrictions 45, 245
[0072] The first conduit 50a
[0073] The second conduit 50b
[0074] The first welded connection 60a
[0075] The second welded connection 60b
[0076] The stator core 70
[0077] The notch 137
[0078] The housing 230
Claims
1. A fluid sheath assembly, comprising: a stator carrier, the stator carrier including an annular carrier body; an enclosing member, the enclosing member defining an annular body; a fluid cavity defined between the stator carrier and the enclosing member; a fluid inlet configured to define a flow path into the fluid cavity; and a fluid outlet configured to define a flow path out of the fluid cavity, wherein the fluid cavity has a constriction in at least a region defined between the fluid inlet and the fluid outlet.
2. The fluid sheath assembly according to claim 1, wherein the enclosing member includes a sheath, and at least one of the sheath or the stator carrier includes at least one protrusion configured to project into the fluid cavity.
3. The fluid sheath assembly according to claim 2, wherein the at least one protrusion includes a plurality of protrusions circumferentially spaced apart from each other.
4. The fluid sheath assembly according to claim 2, wherein the at least one protrusion has an elliptical profile.
5. The fluid sheath assembly according to claim 2, wherein the at least one protrusion is spaced apart from the constriction.
6. The fluid sheath assembly according to claim 1, wherein the constriction is formed by a flat section of the enclosing member, wherein the annular body has a circular profile in a region remote from the flat section.
7. The fluid sheath assembly according to claim 6, wherein a gap of 0.5 mm to 1.0 mm is defined between the flat section of the enclosing member and an adjacent surface of the annular carrier body of the stator carrier.
8. The fluid sheath assembly according to claim 1, wherein the enclosing member includes a sheath, and the sheath defines a first opening and a second opening, the first opening configured to receive a portion of a first conduit, and the second opening for receiving a portion of a second conduit.
9. The fluid sheath assembly according to claim 8, wherein the first opening and the second opening are formed on a flat section of the sheath.
10. The fluid sheath assembly according to claim 1, wherein compared with a region of the fluid cavity remote from the constriction, the constriction reduces the area of the fluid cavity by at least 80%.
11. The fluid sheath assembly according to claim 1, wherein the enclosing member includes a sheath, and the stator carrier and the sheath are welded together.
12. The fluid sheath assembly according to claim 1, wherein the enclosing member includes a housing.
13. A fluid sheath assembly, comprising: a stator carrier, the stator carrier including an annular carrier body; a sheath, the sheath including an annular sheath body; and a fluid cavity defined between the stator carrier and the sheath, wherein the fluid cavity has a constriction defined by a flat section of the sheath; wherein the sheath includes a plurality of protrusions configured to project into the fluid cavity.
14. The fluid sheath assembly according to claim 13, Wherein, the stator carrier and the sheath are welded together.
15. The fluid sheath assembly according to claim 13, further comprising a first conduit configured to provide a flow path to the fluid cavity; and a second conduit configured to provide a flow path to the fluid cavity; Wherein, the flat section defines a corresponding first opening and a second opening, and the first opening and the second opening are configured to receive the first conduit and the second conduit.
16. The fluid sheath assembly according to claim 13, Wherein, the plurality of protrusions are defined around the entire circumference of the sheath in a region away from the constriction.
17. The fluid sheath assembly according to claim 13, Wherein, compared with the region of the fluid cavity away from the constriction defined between the annular carrier body and the annular sheath body, the constriction reduces the area of the fluid cavity by at least 85%.
18. The fluid sheath assembly according to claim 13, Wherein, the plurality of protrusions have an axial extent that covers most of the radially outer surface of the sheath.
19. The fluid sheath assembly according to claim 13, Wherein, the stator carrier and the sheath are laser welded together by a first welded connection and a second welded connection.
20. A fluid sheath assembly, comprising: a stator carrier including an annular carrier body; a sheath including an annular sheath body and a flat section defining a junction for at least two fluid conduits; and a fluid cavity defined between the stator carrier and the sheath; wherein the sheath includes a plurality of protrusions configured to project into the fluid cavity, and the plurality of protrusions are defined around the circumference of the sheath in a region away from the flat section.