Stator assembly and circulating pump using it

Abstract

This utility model discloses a stator assembly and a circulating pump using the same, comprising at least: a stator frame, at least two plates that partially interlock with the stator frame, and a support frame that overlaps the stator frame and is suitable for the simultaneous passage of at least two plates; wherein the support frame has mating holes suitable for the plates to pass through one-to-one; each plate is designed with a mating part for connecting with enameled wire, and the support frame has a notch suitable for exposing the mating part of each plate one-to-one; and the stator frame has an insertion platform adapted to the plates; a positioning structure that cooperates with each other is also designed between the support frame and the stator frame.

Description

Technical Field

[0001] This utility model relates to the field of circulating pump technology, and in particular to a stator assembly and a circulating pump using the same. Background Technology

[0002] For the motor used in a circulating pump, the stator is the stationary part of the motor. The main function of the stator is to generate a rotating magnetic field, while the main function of the rotor is to rotate in the magnetic field and be cut by the magnetic lines of force to generate (output) current. A controller is located directly below the stator coils. Because the capacitor components on the controller are relatively large, a considerable space is required between the stator coils and the control board. Therefore, long connectors are needed on the stator coils to connect to the controller.

[0003] Based on the above, CN206490510U discloses a novel stator, whose stator body includes a stator assembly, stator laminations, and a stator support. The stator assembly and stator laminations are fixedly connected to each other through the stator support, which is integrally injection molded. However, practical research and use have revealed that during stator encapsulation, the excessive length of the laminations may cause some degree of deflection, resulting in incomplete alignment between the laminations and the holes in the encapsulation mold. In this case, the laminations may be deformed by the mold, leading to poor encapsulation and affecting their performance.

[0004] In summary, given the existing defects in the stator plates of circulating pumps, it is necessary to optimize the fit between the stator frame and the plates to improve the reliability and stability of the plate state during the stator sealing process. Utility Model Content

[0005] The primary objective of this invention is to provide a stator assembly that addresses the technical problem of optimizing the fit between the stator frame and the laminations.

[0006] The second objective of this invention is to provide a circulating pump that solves the technical problem of optimizing the fit between the stator assembly frame and the inserts.

[0007] The stator assembly of this utility model is implemented as follows: A stator assembly includes at least: a stator frame, at least two plates that partially engage with the stator frame, and a support frame that overlaps the stator frame and is adapted to allow at least two of the plates to pass through simultaneously; wherein... The support frame is provided with mating holes suitable for inserts to pass through one-to-one; Each of the inserts is designed with a mating portion for connection with enameled wire, and the support frame has a notch adapted to expose the mating portion of each insert one-to-one; and The stator frame is provided with a connector for the insert plates; the support frame and the stator frame are also designed with a positioning structure that cooperates with each other.

[0008] In optional embodiments of this utility model, the connector is at least two separately distributed bosses that adapt to at least two inserts in a one-to-one manner; or The connector is a protrusion arranged in one piece that can simultaneously accommodate at least two connectors. The boss is designed with insertion holes suitable for inserting the insert along its length.

[0009] In an optional embodiment of this utility model, the insert and the socket are interference-fitted; and One of the sidewalls of the boss along the insertion direction of the insert also has a clearance hole that communicates with the through hole.

[0010] In an optional embodiment of this utility model, the support frame is a structure suitable for conforming to the boss so that the support frame and the boss overlap on the side facing away from the stator frame.

[0011] In an optional embodiment of this utility model, the stator frame is further provided with a plurality of winding posts distributed at intervals; and The positioning structure includes positioning portions spaced apart on the support frame and adapted to be embedded in at least two winding posts.

[0012] In an optional embodiment of this invention, the positioning part is a positioning groove extending along the direction of the insert insertion hole, and the side end face of the positioning groove facing the center of the stator frame is an open face; or The positioning part is a positioning hole that extends along the direction in which the insert is inserted into the mating hole.

[0013] In an optional embodiment of this invention, the support frame is further provided with clearance openings that are connected one-to-one with each notch and are suitable for routing enameled wires in the mating part.

[0014] In an optional embodiment of this utility model, the insert includes a needle, a connecting piece, and an insertion piece integrally formed and arranged sequentially along its length; wherein The connector tab is adapted to be partially inserted into the connector base after passing through the mating hole; and The plug-in piece is provided with an outwardly folded piece, and the folded piece is adapted to form a mating portion with the plug-in piece suitable for embedding the enameled wire.

[0015] In an optional embodiment of this invention, at least one of the insert pieces is provided with barbs along the outer edge of the insert piece in the insertion direction of the insert piece into the insert platform, which is suitable for interference fit with the insert platform.

[0016] The circulating pump of this invention is implemented as follows: A circulating pump includes: the stator assembly.

[0017] By adopting the above technical solution, the present invention has the following beneficial effects: The stator assembly and the circulating pump using it of the present invention, through the designed support frame, allow longer inserts to pass through the support frame and then be partially inserted into the insertion platform of the stator frame. Thus, the support frame provides support for the inserts, improving the perpendicularity of the inserts relative to the stator frame. Consequently, when the entire electronic assembly is placed into the molding die for molding, the inserts can be accurately inserted into the holes of the molding die, preventing the inserts from becoming skewed and affecting the molding effect.

[0018] Furthermore, the notch designed on the support frame ensures that the fit between the support frame and the insert does not affect the connection between the insert and the enameled wire. Therefore, the design of the support frame can balance the support of the insert and the convenience of processing the insert and the enameled wire. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the stator assembly of this utility model; Figure 2 This is a schematic diagram of the stator frame, insertion platform, support frame, and insert plate mating structure of the stator assembly of this utility model. Figure 3 This is a first-view structural schematic diagram of the support frame for the stator assembly of this utility model; Figure 4 This is a second-view structural schematic diagram of the support frame for the stator assembly of this utility model; Figure 5 This is a schematic diagram of the structure of the boss on the stator frame of the stator assembly of this utility model; Figure 6 This is a schematic diagram of the mating structure between the insert and the enameled wire in the stator assembly of this utility model; Figure 7 This is a schematic diagram of the insert structure of the stator assembly of this utility model; Figure 8 This is an exploded view of the circulating pump of this utility model.

[0020] In the diagram: Stator assembly 1, stator frame 11, winding post 111, boss 12, insertion hole 121, clearance hole 122, rotor assembly 2, controller assembly 3, insert 4, pin 41, connecting piece 42, plug-in piece 43, barb 44, bending piece 45, support frame 5, mating hole 51, positioning groove 52, notch 53, clearance opening 54, enameled wire 6. Detailed Implementation

[0021] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0022] Example 1: Please see Figures 1 to 7 As shown, this embodiment provides a stator assembly, including at least: a stator frame 11, at least two inserts 4 partially interlocking with the stator frame 11, and a support frame 5 overlapping the stator frame 11 and adapted for the simultaneous passage of at least two inserts 4. In this embodiment, with reference to the accompanying drawings, a more general case is exemplified, where the stator assembly 1 includes three inserts 4, and the support frame 5 can be adapted for the simultaneous passage of all three inserts 4. Of course, theoretically, one insert 4 could also be paired with one support frame 5. However, the case of using multiple support frames 5 in a split configuration is more complicated in terms of processing and assembly than the case of using a single integral support frame 5 in this embodiment, and the reliability of the mating structure formed by the support frame 5 and the stator frame 11 is also less than ideal. Therefore, in this embodiment, only the case where the support frame 5 can be adapted for the simultaneous passage of three inserts 4 is described as an example.

[0023] Based on the above structure, it should be noted that the support frame 5 is provided with mating holes 51 suitable for the inserts 4 to pass through one-to-one. For the three inserts 4, three mating holes 51 are designed on the support frame 5 accordingly. The stator frame 11 is provided with insertion platforms for the inserts 4; that is, each insert 4 is inserted into the insertion platform after passing through the mating hole 51 of the support frame 5. This can be understood as the design of the support frame 5 extending the support height for each insert 4 along the length direction of the insert 4, thereby ensuring the perpendicularity of the insert 4 relative to the stator frame 11.

[0024] Regarding the materials of the plug-in platform and support frame 5 in this embodiment, in order to facilitate processing and to enable both to better fit with the stator frame 11, the plug-in platform and support frame 5 may be made of the same material as the stator frame 11, or regardless of the material of the stator frame 11, the plug-in platform and support frame 5 may be made of plastic.

[0025] Based on the above, it is also necessary to explain that each insert 4 is designed with a mating part for connecting with the enameled wire 6. Accordingly, a notch 53 is formed on the support frame 5 to expose the mating part of each insert 4 one-to-one. In addition, after the insert 4 and the mating hole 51 of the support frame 5 are assembled in place, the design of the notch 53 can also facilitate the mating of the insert 4 and the enameled wire 6.

[0026] Regarding the insert 4 used in this embodiment, it includes a needle 41, a connecting piece 42, and an insert piece 43, which are integrally formed and arranged sequentially along its length. The insert piece 43 is adapted to be partially inserted into the insertion station after passing through the mating hole 51. Furthermore, the insert piece 43 is provided with an outwardly folded piece 45, and the folded piece 45 is adapted to form a mating part with the insert piece 43 suitable for embedding the enameled wire 6. Referring to the accompanying drawings, in one example, the mating part is generally U-shaped. The mating part and the enameled wire 6 can be connected by, for example, but not limited to, welding. The notch 53 on the support frame 5 is designed to facilitate welding. In this structure, the folded piece 45 and the insert piece 43 are pressed together by a spot welding device to complete the welding of the enameled wire 6 and the insert piece 43.

[0027] Based on the above, and considering the routing requirements of the enameled wire 6, to prevent the design of the support frame 5 from compressing the enameled wire 6, a clearance opening 54 suitable for routing the enameled wire 6 in the mating part is also formed on the support frame 5, which is connected one-to-one with each notch 53.

[0028] Based on the aforementioned insert 4, in one optional embodiment, at least one outer edge of the insert 43 along the insertion direction of the insert 4 into the insertion platform is provided with a barb 44 suitable for interference fit with the insertion platform. The design of the barb 44 can increase the pull-out force required to remove the insert 4. The accompanying drawings of this embodiment illustrate the case where both outer edges of the insert 43 are designed with barbs 44.

[0029] Next, regarding the connector in this embodiment, it should be noted that: In the first optional implementation, the connector is composed of three separate bosses 12 that each accommodates one of the three prongs 4. In other words, the three bosses 12 are independent and do not affect each other. In the second optional implementation, the connector is a single, integrated boss 12 that accommodates all three prongs 4. Both of these configurations meet the usage requirements of this embodiment. The accompanying drawings are merely examples illustrating the case of three prongs 4 accommodating one boss 12. Based on this, regardless of whether the boss 12 is separate or integrated, it is designed with insertion holes 121 suitable for inserting the prongs 4 along its length.

[0030] Based on the above, in another optional scenario, the insert 4 is interference-fitted with the insertion hole 121; and one side wall of the boss 12 along the insertion direction of the insert 4 is also formed with a clearance hole 122 communicating with the through hole 121. Specifically, when the insert 4 is inserted into the insertion hole 121, excess material is generated, and the design of the clearance hole 122 here provides space for the discharge of this excess material.

[0031] Finally, it should be noted that the support frame 5 is fixed relative to the insertion platform and the stator frame 11 in this embodiment as follows: First, generally speaking, the support frame 5 and the stator frame 11 are designed with mutually cooperating positioning structures. Second, the support frame 5 is a structure suitable for conforming to the boss 12 so that the support frame 5 and the boss 12 overlap on the side facing away from the stator frame 11. Referring to the accompanying drawings, in one example, the support frame 5 is generally arc-shaped. Based on this, it is also necessary to explain that for the generally arc-shaped support frame 5, it can be partially mounted on the insertion platform and partially mounted on the stator frame 11.

[0032] Based on the above structure, the stator frame 11 is further provided with a plurality of winding posts 111 spaced apart. These winding posts 111 are components that are generally required in a stator frame 11. In this embodiment, the positioning structure includes positioning portions spaced apart on the support frame 5 and suitable for embedding at least two winding posts 111. Referring to the accompanying drawings, in the case of a roughly arc-shaped support frame 5, two positioning portions are designed, located at two ends close to the arc length of the support frame 5, with the spacing between the two positioning portions being as large as possible. The three mating holes 51 for accommodating the three inserts 4 are designed on the support frame 5 at the locations between the two positioning portions. This ensures that the mating holes 51 and the positioning portions on the overall support frame 5 do not interfere with each other. Based on the above structure, for the reliable positioning process of the support frame 5 on the stator frame 11, the winding posts 111 already present in the conventional structure of the stator frame 11 are utilized, thereby achieving a simplified and reliable fit between the support frame 5 and the stator frame 11.

[0033] Based on the above, for the engagement of the winding post 111, in the first optional embodiment, the positioning part is a positioning groove 52 extending along the direction in which the insert 4 is inserted into the mating hole 51. The side end face of the positioning groove 52 facing the center of the stator frame 11 is an open face, and the cross-section of the positioning groove 52 in this structure along the direction perpendicular to the insertion of the insert 4 into the support frame 5 is U-shaped. In the second optional embodiment, the positioning part is a positioning hole extending along the direction in which the insert 4 is inserted into the mating hole 51. Theoretically, both of the above embodiments meet the usage requirements of this embodiment, and this embodiment does not make absolute limitations on them.

[0034] In summary, for the stator assembly 1 in this embodiment, the designed support frame 5 allows the longer insert 4 to pass through the support frame 5 and then be partially inserted into the insertion platform of the stator frame 11. Thus, the support frame 5 provides support for the insert 4, improving the perpendicularity of the insert 4 relative to the stator frame 11. Consequently, when the entire electronic assembly is placed into the molding die for molding, the insert 4 can be accurately inserted into the hole of the molding die, preventing the insert 4 from becoming skewed and affecting the molding effect.

[0035] Example 2: Please see Figures 1 to 8 As shown, based on the stator assembly 1 of Embodiment 1, this embodiment provides a circulating pump, including: the stator assembly 1 of Embodiment 1. Furthermore, it should be noted that the circulating pump also includes a controller assembly 3 connected to the stator assembly 1, and a rotor assembly 2 cooperating with the stator assembly 1. The controller assembly 3 and rotor assembly 2 can be selected from mature methods in the prior art, and their specific structures and implementation principles are not absolutely limited in this embodiment.

[0036] Based on the above structure, in this embodiment, the pin 41 of the insert 4 is used to weld the UVW three-phase of the controller assembly 3, thereby realizing the electrical connection between the controller assembly 3 and the stator assembly 1.

[0037] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0038] In the description of this utility model, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0039] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0041] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0042] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

Claims

1. A stator assembly, characterized in that, At least including: A stator frame, at least two inserts that partially engage with the stator frame, and a support frame that overlaps the stator frame and is adapted to allow at least two of the inserts to pass through simultaneously. in The support frame is provided with mating holes suitable for inserts to pass through one-to-one; Each of the inserts is designed with a mating portion for connection with enameled wire, and the support frame has a notch adapted to expose the mating portion of each insert one-to-one; and The stator frame is provided with a connector for the insert plates; the support frame and the stator frame are also designed with a positioning structure that cooperates with each other.

2. The stator assembly according to claim 1, characterized in that, The connector is a split-type protrusion that adapts to at least two protrusions in a one-to-one manner; or The connector is a protrusion arranged in one piece that can simultaneously accommodate at least two connectors. The boss is designed with insertion holes suitable for inserting the insert along its length.

3. The stator assembly according to claim 2, characterized in that, The insert and the socket are interference-fitted; and One of the sidewalls of the boss along the insertion direction of the insert also has a clearance hole that communicates with the through hole.

4. The stator assembly according to claim 2 or 3, characterized in that, The support frame is a structure adapted to conform to the boss so that the support frame and the boss overlap on the side facing away from the stator frame.

5. The stator assembly according to any one of claims 1 to 3, characterized in that, The stator frame is also provided with multiple winding posts arranged at intervals; and The positioning structure includes positioning portions spaced apart on the support frame and adapted to be embedded in at least two winding posts.

6. The stator assembly according to claim 5, characterized in that, The positioning part is a positioning groove extending along the direction of the insertion hole of the insert, and the side end face of the positioning groove facing the center of the stator frame is an open face; or The positioning part is a positioning hole that extends along the direction in which the insert is inserted into the mating hole.

7. The stator assembly according to claim 1, characterized in that, The support frame also has clearance openings that are connected one-to-one with each notch, suitable for routing enameled wires in the mating part.

8. The stator assembly according to claim 1, characterized in that, The insert includes a needle, a connecting piece, and a plug-in piece, all integrally formed and arranged sequentially along its length; wherein The connector tab is adapted to be partially inserted into the connector base after passing through the mating hole; and The plug-in piece is provided with an outwardly folded piece, and the folded piece is adapted to form a mating portion with the plug-in piece suitable for embedding the enameled wire.

9. The stator assembly according to claim 8, characterized in that, At least one of the insert pieces has barbs on its outer edge along the insertion direction of the insert piece into the insert platform, which are suitable for interference fit with the insert platform.

10. A circulating pump, characterized in that, include: The stator assembly as described in any one of claims 1 to 9.

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