Fluid control device

Abstract

A fluid control device comprises a winding framework, a first winding, a second winding and a third winding, the winding framework comprises an iron core part and an insulation part, the insulation part is formed in an injection molding mode with the iron core part as an insert, and the first winding, the second winding and the third winding are arranged in the axial direction of the winding framework. The first winding, the second winding and the third winding are far away from the iron core part relative to the insulating part, and the insulating part and the iron core part bear pressure applied by the first winding, the second winding and the third winding together, so that the non-deformability of the insulating framework is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fluid control, and in particular to a fluid control device. Background Art

[0002] The stator assembly of the relevant fluid control device is composed of components such as windings and winding frames. The windings are wound around the winding frames, and the winding frames need to withstand the pressure of the windings. How to improve the deformation resistance of the winding frames is a technical problem. Summary of the Invention

[0003] The object of the present invention is to provide a fluid control device, which is beneficial to improving the anti-deformation ability of the winding skeleton.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] An embodiment of the present invention provides a fluid control device, including a winding skeleton, a first winding, a second winding and a third winding, the winding skeleton including an iron core portion and an insulating portion, the insulating portion being injection-molded with the iron core portion as an insert, the first winding, the second winding and the third winding being arranged along the axial direction of the winding skeleton, the first winding being away from the iron core portion relative to the insulating portion, the second winding being away from the iron core portion relative to the insulating portion, and the third winding being away from the iron core portion relative to the insulating portion.

[0006] In the fluid control device provided in an embodiment of the present invention, the first winding, the second winding and the third winding are respectively far away from the iron core part relative to the insulating part, and the insulating part and the iron core part jointly bear the pressure applied by the first winding, the second winding and the third winding. Such an arrangement is conducive to improving the deformation resistance of the insulating skeleton. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 is a schematic cross-sectional structural diagram of a fluid control device provided by an embodiment of the present invention;

[0008] Figure 2 This is an embodiment of the present invention Figure 1 A schematic cross-sectional view of the stator assembly and housing;

[0009] Figure 3 This is an embodiment of the present invention Figure 2 A schematic diagram of the three-dimensional structure of the stator assembly and the housing;

[0010] Figure 4 This is an embodiment of the present invention Figure 2 Schematic diagram of the three-dimensional structure of the winding skeleton;

[0011] Figure 5 This is an embodiment of the present invention Figure 4 Schematic diagram of the cross-section structure;

[0012] Figure 6 This is an embodiment of the present invention Figure 5 Schematic diagram of the cross-sectional structure of the middle insulating part;

[0013] Figure 7 This is an embodiment of the present invention Figure 6 Schematic diagram of the three-dimensional structure of the middle iron core;

[0014] Figure 8 This is an embodiment of the present invention Figure 6 Schematic diagram of the explosion structure of the middle iron core;

[0015] In the figure: 100-stator assembly, 200-rotor assembly, 300-magnetic isolation tube, 400-valve seat, 500-valve core assembly, 600-housing, 110-winding skeleton, 120-first winding, 130-second winding, 140-third winding, 111-core, 112-insulating part, 113-first hole, 1111-first core, 1112-second core, 1113-third core, 1114-fourth Core part, 1111a-first base part, 1111b-first tooth part, 1111c-first receiving part, 1112a-second base part, 1112b-second tooth part, 1112c-third tooth part, 1112d-first sub-base part, 1112e-second sub-base part, 1112f-second receiving part, 1112g-third receiving part, 1112h-first convex part, 1112i-first concave part, 1113a-third base part, 1114 13b-fourth tooth portion, 1113c-fifth tooth portion, 1113d-third sub-base portion, 1113e-fourth sub-base portion, 1113f-fourth receiving portion, 1113g-fifth receiving portion, 1113h-second convex portion, 1113i-second concave portion, 1114a-fourth base portion, 1114b-sixth tooth portion, 1114c-sixth receiving portion, 1121-seventh receiving portion, 1122-eighth receiving portion, 1123-ninth receiving portion The receiving portion, 1124-the tenth receiving portion, 1125-the eleventh receiving portion, 1126-the fifth embedded portion, 1127-the sixth embedded portion, 1128-the seventh embedded portion, 1129-the side wall portion, 1130-the twelfth receiving portion, 1131-the first embedded portion, 1132-the second embedded portion, 1133-the third embedded portion, 1134-the fourth embedded portion, 1129a-the first side wall, 1129b-the transition surface, 1129c-the end wall. DETAILED DESCRIPTION

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0017] In related technologies, the stator assembly of a fluid control device includes components such as windings and a winding frame. The windings are wound around the winding frame, and the winding frame needs to withstand the pressure of the windings. How to improve the deformation resistance of the winding frame is a technical problem.

[0018] Furthermore, in order to improve the deformation resistance of the winding frame, technicians in this field can easily think of increasing the wall thickness of the winding frame. Although such a setting is conducive to improving the deformation resistance of the winding frame, it is not conducive to increasing the number of turns of the winding, nor is it conducive to the miniaturization of the fluid control device.

[0019] Based on the above technical problems, an embodiment of the present invention provides a fluid control device, including a winding skeleton 110, a first winding 120, a second winding 130 and a third winding 140, the winding skeleton 110 including an iron core portion 111 and an insulating portion 112, the insulating portion 112 being injection-molded with the iron core portion 111 as an insert, the first winding 120, the second winding 130 and the third winding 140 being arranged along the axial direction of the winding skeleton 110, the first winding 120 being away from the iron core portion 111 relative to the insulating portion 112, the second winding 130 being away from the iron core portion 111 relative to the insulating portion 112, and the third winding 140 being away from the iron core portion 111 relative to the insulating portion 112.

[0020] In the fluid control device, the first winding 120, the second winding 130 and the third winding 140 are respectively away from the iron core part 111 relative to the insulating part 112. The insulating part 112 and the iron core part 111 jointly bear the pressure applied by the first winding 120, the second winding 130 and the third winding 140. This arrangement is conducive to improving the deformation resistance of the insulating skeleton.

[0021] In order to enable those skilled in the art to better understand the present application, the following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. In order to enable those skilled in the art to better understand the present application, the following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0022] The following combination Figures 1 to 8The fluid control device provided by the embodiment of the present invention is described in detail. The fluid control device includes: a stator assembly 100, a rotor assembly 200, a magnetic isolation tube 300, a valve seat 400, a valve core assembly 500 and a housing 600.

[0023] The stator assembly 100 includes a winding skeleton 110, a first winding 120, a second winding 130 and a third winding 140. The winding skeleton 110 includes an iron core portion 111 and an insulating portion 112. The insulating portion 112 is injection molded with the iron core portion 111 as an insert. The first winding 120, the second winding 130 and the third winding 140 are arranged along the axial direction of the winding skeleton 110. The first winding 120 is away from the iron core portion 111 relative to the insulating portion 112, the second winding 130 is away from the iron core portion 111 relative to the insulating portion 112, and the third winding 140 is away from the iron core portion 111 relative to the insulating portion 112.

[0024] For ease of understanding, Figure 1 and Figure 2 As shown, the first winding 120, the second winding 130, and the third winding 140 are wound around the winding bobbin 110. The first winding 120, the second winding 130, and the third winding 140 are arranged along the axial direction of the winding bobbin 110, that is, they are arranged in sequence along the first hole 113 of the winding bobbin 110. This arrangement facilitates the winding of the first winding 120, the second winding 130, and the third winding 140. The first winding 120, the second winding 130, and the third winding 140 are electrically connected. The electrical connection structure of the first winding 120, the second winding 130, and the third winding 140 includes at least one of a star electrical connection structure and a delta electrical connection structure, so that the first winding 120, the second winding 130, and the third winding 140 constitute a three-phase drive circuit.

[0025] The first winding 120 contacts the insulating portion 112 and is positioned away from the core 111 relative to the insulating portion 112, preventing contact between the first winding 120 and the core 111. The insulating portion 112 isolates the first winding 120 from the core 111, improving the safety of the operation of the first winding 120. The second winding 130 contacts the insulating portion 112 and is positioned away from the core 111 relative to the insulating portion 112, preventing contact between the second winding 130 and the core 111. The insulating portion 112 isolates the second winding 130 from the core 111, improving the safety of the operation of the second winding 130. The third winding 140 contacts the insulating portion 112 and is positioned away from the core 111 relative to the insulating portion 112, preventing contact between the third winding 140 and the core 111. The insulating portion 112 isolates the third winding 140 from the core 111, improving the safety of the operation of the third winding 140.

[0026] The winding skeleton 110 includes an iron core portion 111 and an insulating portion 112. The material used to make the iron core portion 111 includes but is not limited to at least one of iron, silicon, copper, and nickel. The material used to make the insulating layer includes but is not limited to resin. The material strength of the iron core portion 111 is greater than the material strength of the insulating portion 112. The material of the winding skeleton 110 in the related art is composed of resin. The winding skeleton 110 of this embodiment is composed of an insulating portion 112 made of resin and an iron core portion 111 made of at least one of iron, silicon, copper, and nickel. Under the same size, the winding skeleton 110 of this embodiment has better structural strength than the winding skeleton 110 of the related art. Such a setting improves the deformation resistance of the winding skeleton 110.

[0027] The insulating part 112 is injection molded with the iron core part 111 as an insert. The insulating part 112 and the iron core part 111 are interlocked, and the insulating part 112 and the iron core part 111 are firmly combined together, thereby improving the bonding strength between the insulating part 112 and the iron core part 111, thereby improving the structural strength of the winding skeleton 110. Such a setting is conducive to improving the deformation resistance of the winding skeleton 110.

[0028] In one possible implementation, the core portion 111 includes a first core portion 1111, a second core portion 1112, a third core portion 1113, and a fourth core portion 1114. The winding skeleton 110 has a first hole 113. Along the axial direction of the first hole 113, the first core portion 1111, the second core portion 1112, the third core portion 1113, and the fourth core portion 1114 are sequentially spaced apart. At least part of the insulating portion 112 is located in the gap between the first core portion 1111 and the second core portion 1112. At least part of the first core portion 1111 is located in the gap between the first core portion 1111 and the second core portion 1112. The winding 120 is located in the gap between the first core portion 1111 and the second core portion 1112, at least part of the insulating portion 112 is located in the gap between the second core portion 1112 and the third core portion 1113, at least part of the second winding 130 is located in the gap between the second core portion 1112 and the third core portion 1113, at least part of the insulating portion 112 is located in the gap between the third core portion 1113 and the fourth core portion 1114, and at least part of the third winding 140 is located in the gap between the third core portion 1113 and the fourth core portion 1114.

[0029] For ease of understanding, Figure 1 As shown, the function of the first hole 113 includes accommodating the rotor assembly 200. The stator assembly 100 can drive the rotor assembly to rotate, thereby realizing the fluid control function of the fluid control device. The first hole 113 passes through the winding frame 110 and is arranged along the axial direction of the winding frame 110.

[0030] like Figure 4 and Figure 5As shown, the core portion 111 includes four core components, which are independent of each other. The four core components are the first core portion 1111, the second core portion 1112, the third core portion 1113 and the fourth core portion 1114. The first core portion 1111 and the second core portion 1112 are spaced apart, the second core portion 1112 and the third core portion 1113 are spaced apart, and the third core portion 1113 and the fourth core portion 1114 are spaced apart. The gaps between the first core portion 1111 and the second core portion 1112, the gap between the second core portion 1112 and the third core portion 1113, and the gap between the third core portion 1113 and the fourth core portion 1114 are arranged in sequence. These three gaps can accommodate the first winding 120, the second winding 130, and the third winding 140, respectively. This arrangement facilitates the arrangement and winding of the first winding 120, the second winding 130, and the third winding 140 along the axial direction of the winding bobbin 110. These three gaps can also form air gaps for generating a magnetic field for the first winding 120, the second winding 130, and the third winding 140, respectively. The use of independent components facilitates the formation of the above three air gaps.

[0031] The insulating portion 112 and the four core components are respectively engaged with each other. Such an arrangement improves the bonding strength between the insulating portion 112 and the four core components. The four core components can better support the first winding 120 , the second winding 130 and the third winding 140 .

[0032] In one possible implementation, the first core portion 1111 includes a first base portion 1111a and a first tooth portion 1111b. The first base portion 1111a is located radially outside the first hole 113. The first tooth portion 1111b extends from the first base portion 1111a toward one axial side of the first hole 113. The insulating portion 112 is engaged with the first base portion 1111a.

[0033] The second core portion 1112 includes a second base portion 1112a, a second tooth portion 1112b, and a third tooth portion 1112c. The second base portion 1112a is located radially outside the first hole 113, the second tooth portion 1112b extends from the second base portion 1112a to the other axial side of the first hole 113, and the third tooth portion 1112c extends from the second base portion 1112a to one axial side of the first hole 113. The insulating portion 112 is engaged with the second base portion 1112a, and the insulating portion 112 is engaged with the second tooth portion 1112b and the third tooth portion 1112c.

[0034] The second core portion 1112 includes a third base portion 1113a, a fourth tooth portion 1113b, and a fifth tooth portion 1113c. The third base portion 1113a is located radially outside the first hole 113. The fourth tooth portion 1113b extends from the third base portion 1113a to the other axial side of the first hole 113. The fifth tooth portion 1113c extends from the third base portion 1113a to one axial side of the first hole 113. The insulating portion 112 is engaged with the third base portion 1113a. The insulating portion 112 is engaged with the third tooth portion 1112c and the fourth tooth portion 1113b.

[0035] The fourth iron core includes a fourth base portion 1114a and a sixth tooth portion 1114b. The fourth base portion 1114a is located radially outside the first hole 113, and the sixth tooth portion 1114b extends from the fourth base portion 1114a to the other axial side of the first hole 113. The insulating portion 112 and the fourth base portion 1114a are interlocked, and the insulating portion 112 is interlocked with the fifth tooth portion 1113c and the sixth tooth portion 1114b.

[0036] For ease of understanding, Figure 7 and Figure 8 As shown, the first base portion 1111a and the first tooth portion 1111b are integrally formed and formed into the first core portion 1111 through a stamping process. The first base portion 1111a is located radially outward of the first hole 113 and is generally annular in shape. The first base portion 1111a is also located circumferentially outward of the first hole 113. This shape helps the first base portion 1111a withstand the pressure applied by the first winding 120. The first tooth portion 1111b is generally located radially outward of the first hole 113 and extends axially from the first base portion 1111a toward one side of the first hole 113. Considering the manufacturing tolerances of the first core portion 1111, the extension direction of the first tooth portion 1111b is allowed to have a certain degree of tolerance relative to the axial direction of the first hole 113. This arrangement helps the first tooth portion 1111b withstand the pressure applied by the first winding 120. The first teeth 1111b are generally triangular in shape, which improves magnetic conductivity and helps reduce magnetic saturation issues in the first teeth 1111b. There are multiple, specifically twelve, first teeth 1111b, evenly spaced along the circumference of the first hole 113. The angle between adjacent first teeth 1111b is approximately 30°.

[0037] like Figure 7 and Figure 8As shown, the second core portion 1112 includes a second base portion 1112a, a second tooth portion 1112b, and a third tooth portion 1112c. The second tooth portion 1112b and the third tooth portion 1112c can be integral or separate. In this embodiment, the second tooth portion 1112b and the third tooth portion 1112c are separate. The second base portion 1112a is located radially outward of the first hole 113. The second base portion 1112a is generally annular in shape and is also located circumferentially outward of the first hole 113. This shape helps the second base portion 1112a withstand the pressure applied by the first winding 120 and the second winding 130. The second tooth portion 1112b is located substantially radially outward from the first hole 113 and extends from the second base portion 1112a to the other axial side of the first hole 113. To account for manufacturing tolerances in the manufacture of the second core portion 1112, the extension direction of the second tooth portion 1112b is allowed to have a certain degree of tolerance relative to the axial direction of the first hole 113. This arrangement helps the second tooth portion 1112b withstand the pressure applied by the first winding 120. The third tooth portion 1112c is located substantially radially outward from the first hole 113 and extends from the second base portion 1112a to the other axial side of the first hole 113. To account for manufacturing tolerances in the manufacture of the second core portion 1112, the extension direction of the third tooth portion 1112c is allowed to have a certain degree of tolerance relative to the axial direction of the first hole 113. This arrangement helps the third tooth portion 1112c withstand the pressure applied by the second winding 130. The shape of the second tooth portion 1112b is roughly triangular. Such a shape of the second tooth portion 1112b has better magnetic conductivity, which helps to reduce the magnetic saturation problem of the second tooth portion 1112b. There are multiple second tooth portions 1112b, specifically twelve, and the twelve second tooth portions 1112b are evenly arranged along the circumference of the first hole 113, and the angle between adjacent second tooth portions 1112b is approximately 30°. The shape of the third tooth portion 1112c is roughly triangular. Such a shape of the third tooth portion 1112c has better magnetic conductivity, which helps to reduce the magnetic saturation problem of the third tooth portion 1112c. There are multiple third tooth portions 1112c, specifically twelve, and the twelve third tooth portions 1112c are evenly arranged along the circumference of the first hole 113, and the angle between adjacent third tooth portions 1112c is approximately 30°.

[0038] The third core portion 1113 includes a third base portion 1113a, a fourth tooth portion 1113b, and a fifth tooth portion 1113c. Figure 7 and Figure 8 As shown, the structures of the third core portion 1113 and the second core portion 1112 are basically the same, and are not described in detail here.

[0039] The fourth core portion 1114 includes a fourth base portion 1114a and a sixth tooth portion 1114b. Figure 7 and Figure 8 As shown, the structures of the fourth core portion 1114 and the first core portion 1111 are basically the same, and will not be described in detail here.

[0040] The insulating part 112 is engaged with the first tooth portion 1111b, the second tooth portion 1112b, the third tooth portion 1112c, the fourth tooth portion 1113b, the fifth tooth portion 1113c and the sixth tooth portion 1114b. The insulating part 112 is also engaged with the first base portion 1111a, the second base portion 1112a, the third base portion 1113a and the fourth base portion 1114a. This arrangement further improves the bonding strength between the insulating part 112 and the first core portion 1111, the second core portion 1112, the third core portion 1113 and the fourth core portion 1114. The four core components can better support the first winding 120, the second winding 130 and the third winding 140.

[0041] In one possible implementation, the second base portion 1112a includes a first sub-base portion 1112d and a second sub-base portion 1112e. The first sub-base portion 1112d is located radially outside the first hole 113, and the second sub-base portion 1112e is located radially outside the first hole 113. The second tooth portion 1112b extends from the first sub-base portion 1112d to the other axial side of the first hole 113, and the third tooth portion 1112c extends from the second sub-base portion 1112e to one axial side of the first hole 113. The insulating portion 112 is engaged with the first sub-base portion 1112d and the second sub-base portion 1112e.

[0042] The third base 1113a includes a third sub-base 1113d and a fourth sub-base 1113e. The third sub-base 1113d is located radially outside the first hole 113, and the fourth sub-base 1113e is located radially outside the first hole 113. The fourth tooth portion 1113b extends from the third sub-base 1113d to the other axial side of the first hole 113, and the fifth tooth portion 1113c extends from the fourth sub-base 1113e to one axial side of the first hole 113. The insulating portion 112 is engaged with the third sub-base 1113d and the fourth sub-base 1113e.

[0043] For ease of understanding, the second core portion 1112 and the third core portion 1113 provided in this embodiment are split structures, the first sub-base 1112d and the second tooth portion 1112b are an integral structure, and the second sub-base 1112e and the third tooth portion 1112c are an integral structure. The first sub-base 1112d and the second tooth portion 1112b of the integral structure are separable from the second sub-base 1112e and the third tooth portion 1112c of the integral structure. The first sub-base 1112d and the second tooth portion 1112b of the integral structure are substantially identical in shape to the first core portion 1111, and are not described in detail here. The second sub-base 1112e and the third tooth portion 1112c of the integral structure are substantially identical in shape to the first core portion 1111, and are not described in detail here.

[0044] To sum up, the shape of the first core portion 1111 is basically consistent with the shape of the first sub-base 1112d and the second tooth portion 1112b of the integrated structure, the shape of the first core portion 1111 is basically consistent with the shape of the second sub-base 1112e and the third tooth portion 1112c of the integrated structure, the shape of the first core portion 1111 is basically consistent with the shape of the third sub-base 1113d and the fourth tooth portion 1113b of the integrated structure, the shape of the first core portion 1111 is basically consistent with the shape of the fourth sub-base 1113e and the fifth tooth portion 1113c of the integrated structure, and the shape of the first core portion 1111 is basically consistent with the shape of the fourth core portion 1114. Six core components of the same shape can be stamped using the same set of molds. Such an arrangement is conducive to reducing manufacturing costs.

[0045] The insulating portion 112 is engaged with the first sub-base 1112d and the second sub-base 1112e, which helps to improve the bonding strength between the split second base 1112a and the insulating portion 112. The insulating portion 112 is also engaged with the third sub-base 1113d and the fourth sub-base 1113e, which helps to improve the bonding strength between the split third base 1113a and the insulating portion 112.

[0046] In a possible implementation, the first base portion 1111a includes a first accommodating portion 1111c, the insulating portion 112 includes a first embedded portion 1131, and at least a portion of the first embedded portion 1131 is located in the first accommodating portion 1111c;

[0047] The first sub-base 1112d includes a second receiving portion 1112f, the second sub-base 1112e includes a third receiving portion 1112g, and the insulating portion 112 includes a second embedded portion 1132, at least part of the second embedded portion 1132 is located in the second receiving portion 1112f, and at least part of the second embedded portion 1132 is located in the third receiving portion 1112g.

[0048] The third sub-base 1113d includes a fourth accommodating portion 1113f, the fourth sub-base 1113e includes a fifth accommodating portion 1113g, and the insulating portion 112 includes a third embedded portion 1133. At least a portion of the third embedded portion 1133 is located in the fourth accommodating portion 1113f, and at least a portion of the third embedded portion 1133 is located in the fifth accommodating portion 1113g.

[0049] The fourth base portion 1114a includes a sixth receiving portion 1114c, and the insulating portion 112 includes a fourth embedding portion 1134. At least a portion of the fourth embedding portion 1134 is located in the sixth receiving portion 1114c.

[0050] For ease of understanding, Figure 7 and Figure 8 As shown, the first receiving portion 1111c is a hole on the first base 1111a, the first embedded portion 1131 is embedded in the hole of the first base 1111a, the second receiving portion 1112f is a hole on the first sub-base 1112d, the third receiving portion 1112g is a hole on the second sub-base 1112e, the hole on the first sub-base 1112d is opposite to the hole on the second sub-base 1112e, the second embedded portion 1132 is embedded in the hole on the first sub-base 1112d and the hole on the second sub-base 1112e, and the fourth receiving portion 1113f is the hole on the third sub-base 1112d. 13d, the fifth accommodating portion 1113g is the hole on the fourth sub-base 1113e, the third embedded portion 1133 is embedded in the hole on the third sub-base 1113d and the hole on the fourth sub-base 1113e, the sixth accommodating portion 1114c is the hole on the fourth base 1114a, and the fourth embedded portion 1134 is embedded in the hole on the fourth base 1114a. By adopting this interlocking structure, the bonding strength between the four core components and the insulating portion 112 is further improved, and the four core components can better support the first winding 120, the second winding 130 and the third winding 140.

[0051] In one possible implementation, the first sub-base 1112d and the second sub-base 1112e are positionally connected. The structure of the positionally connected first sub-base 1112d and the second sub-base 1112e includes a first convex portion 1112h and a first concave portion 1112i. At least a portion of the first convex portion 1112h is located in the first concave portion 1112i.

[0052] The third sub-base 1113d and the fourth sub-base 1113e are connected in a limiting manner. The structure of the third sub-base 1113d and the fourth sub-base 1113e in a limiting manner includes a second protrusion 1113h and a second recess 1113i. At least part of the second protrusion 1113h is located in the second recess 1113i.

[0053] For ease of understanding, Figure 7 and Figure 8As shown, a first convex portion 1112h and a first concave portion 1112i are formed on the first sub-base 1112d, and a first convex portion 1112h and a first concave portion 1112i are also formed on the second sub-base 1112e. The first convex portion 1112h of the first sub-base 1112d is embedded in the first concave portion 1112i of the second sub-base 1112e, and the first convex portion 1112h of the second sub-base 1112e is embedded in the first concave portion 1112i of the second sub-base 1112e. Such an arrangement is beneficial for the second accommodating portion 1112f to be opposite to the third accommodating portion 1112g, so that the second embedded portion 1132 can be embedded in the second accommodating portion 1112f and the third accommodating portion 1112g.

[0054] A second convex portion 1113h and a second concave portion 1113i are formed on the third sub-base 1113d, and a second convex portion 1113h and a second concave portion 1113i are also formed on the fourth sub-base 1113e. The second convex portion 1113h of the third sub-base 1113d is embedded in the second concave portion 1113i of the fourth sub-base 1113e, and the second convex portion 1113h of the fourth sub-base 1113e is embedded in the second concave portion 1113i of the third sub-base 1113d. Such an arrangement is beneficial for the fourth accommodating portion 1113f to be opposite to the fifth accommodating portion 1113g, so that the third embedded portion 1133 can be embedded in the fourth accommodating portion 1113f and the fifth accommodating portion 1113g.

[0055] In one possible implementation, the insulating portion 112 includes a seventh accommodating portion 1121, an eighth accommodating portion 1122, a ninth accommodating portion 1123, a tenth accommodating portion 1124, an eleventh accommodating portion 1125, and a twelfth accommodating portion 1130. At least a portion of the first tooth portion 1111b is located in the seventh accommodating portion 1121, at least a portion of the second tooth portion 1112b is located in the eighth accommodating portion 1122, at least a portion of the third tooth portion 1112c is located in the ninth accommodating portion 1123, at least a portion of the fourth tooth portion 1113b is located in the tenth accommodating portion 1124, at least a portion of the fifth tooth portion 1113c is located in the eleventh accommodating portion 1125, and at least a portion of the sixth tooth portion 1114b is located in the twelfth accommodating portion 1130.

[0056] The insulating portion 112 includes a fifth embedded portion 1126, a sixth embedded portion 1127 and a seventh embedded portion 1128, at least part of the fifth embedded portion 1126 is located in the gap between the first tooth portion 1111b and the second tooth portion 1112b, at least part of the sixth embedded portion 1127 is located in the gap between the third tooth portion 1112c and the fourth tooth portion 1113b, and at least part of the seventh embedded portion 1128 is located in the gap between the fifth tooth portion 1113c and the sixth tooth portion 1114b.

[0057] For ease of understanding, Figure 6As shown, the seventh accommodating portion 1121, the eighth accommodating portion 1122, the ninth accommodating portion 1123, the tenth accommodating portion 1124 and the eleventh accommodating portion 1125 are respectively grooves on the insulating portion 112, and the first tooth portion 1111b, the second tooth portion 1112b, the third tooth portion 1112c, the fourth tooth portion 1113b, the fifth tooth portion 1113c and the sixth tooth portion 1114b are respectively embedded in the grooves of the insulating portion 112. This arrangement improves the bonding strength between the insulating portion 112 and the iron core portion, and the iron core portion can better withstand the pressure applied by the first winding 120, the second winding 130 and the third winding 140.

[0058] The fifth embedded portion 1126, the sixth embedded portion 1127 and the seventh embedded portion 1128 are arranged along the axial direction of the first hole 113, the fifth embedded portion 1126 is located in the gap between the first tooth portion 1111b and the second tooth portion 1112b, the sixth embedded portion 1127 is embedded in the gap between the third tooth portion 1112c and the fourth tooth portion 1113b, and the seventh embedded portion 1128 is embedded in the gap between the fifth tooth portion 1113c and the sixth tooth portion 1114b. This arrangement improves the bonding between the insulating portion 112 and the core portion. The combined strength is improved, and the iron core portion can better withstand the pressure applied by the first winding 120, the second winding 130 and the third winding 140. Moreover, the fifth embedded portion 1126 isolates the first tooth portion 1111b and the second tooth portion 1112b, the sixth embedded portion 1127 isolates the third tooth portion 1112c and the fourth tooth portion 1113b, and the seventh embedded portion 1128 isolates the sixth tooth portion 1114b and the seventh tooth portion. The air gaps at these three locations are relatively stable, further improving the performance stability of the valve device.

[0059] In one possible implementation, the insulating portion 112 includes a side wall portion 1129, and the side wall portion 1129 includes a first side wall 1129a, a transition surface 1129b, and an end wall 1129c. Along the radial direction of the first hole 113, the transition surface 1129b is located between the first side wall 1129a and the end wall 1129c, and the transition surface 1129b is a smooth surface.

[0060] For ease of understanding, Figure 6As shown, the side wall portion 1129 is located on a side of the insulating portion 112 away from the first tooth portion 1111b, the second tooth portion 1112b, the third tooth portion 1112c, the fourth tooth portion 1113b, the fifth tooth portion 1113c and the sixth tooth portion 1114b, the first side wall 1129a, the transition surface 1129b and the end wall 1129c are connected in sequence, the extension direction of the first side wall 1129a is consistent with the radial direction of the first hole 113, the extension direction of the end wall 1129c is consistent with the axial direction of the first hole 113, the transition surface 1129b can be a smooth surface, and the end wall 1129c smoothly transitions to the first side wall 1129a through the transition surface 1129b. The transition surface 1129b can be an inclined surface or an arcuate surface. The transition surface 1129b in this embodiment is an inclined surface.

[0061] In one possible implementation, along the axial direction of the first hole 113, the distance between the first winding 120 and the first core portion 1111 relative to the insulating portion 112 is no more than 0.5 mm, the distance between the first winding 120 and the second core portion 1112 relative to the insulating portion 112 is no more than 0.5 mm, the distance between the second winding 130 and the second core portion 1112 relative to the insulating portion 112 is no more than 0.5 mm, the distance between the second winding 130 and the third core portion 1113 relative to the insulating portion 112 is no more than 0.5 mm, the distance between the third winding 140 and the third core portion 1113 relative to the insulating portion 112 is no more than 0.5 mm, and the distance between the third winding 140 and the fourth core portion 1114 relative to the insulating portion 112 is no more than 0.5 mm.

[0062] And / or, along the radial direction of the first hole 113, the distance between the first winding 120 and the first core portion 1111 relative to the insulating portion 112 is not greater than 0.5 mm, the distance between the first winding 120 and the second core portion 1112 relative to the insulating portion 112 is not greater than 0.5 mm, the distance between the second winding 130 and the second core portion 1112 relative to the insulating portion 112 is not greater than 0.5 mm, the distance between the second winding 130 and the third core portion 1113 relative to the insulating portion 112 is not greater than 0.5 mm, the distance between the third winding 140 and the third core portion 1113 relative to the insulating portion 112 is not greater than 0.5 mm, and the distance between the third winding 140 and the fourth core portion 1114 relative to the insulating portion 112 is not greater than 0.5 mm.

[0063] For ease of understanding, the distance between the first winding 120 and the first core portion 1111 is not greater than 0.5 mm, so that the surface thickness of the insulating portion 112 on the first core portion 1111 is basically not greater than 0.5 mm; the distance between the first winding 120 and the second core portion 1112 is not greater than 0.5 mm, and the distance between the second winding 130 and the second core portion 1112 is not greater than 0.5 mm, so that the surface thickness of the insulating portion 112 on the second core portion 1112 is basically not greater than 0.5 mm; the distance between the second winding 130 and the third core portion 1113 is not greater than 0.5 mm, and the distance between the third winding 140 and the third core portion 1113 is not greater than 0.5 mm, so that the surface thickness of the insulating portion 112 on the third core portion 1113 is basically not greater than 0.5 mm. Greater than 0.5mm; the distance between the third winding 140 and the fourth core portion 1114 is not greater than 0.5mm, so that the surface thickness of the insulating portion 112 on the fourth core portion 1114 is basically not greater than 0.5mm; through the above-mentioned arrangement, the wall thickness of the insulating portion 112 is made very thin, so that the internal space of the winding skeleton 110 is enlarged, and the internal space of the winding skeleton 110 can be used to wind more turns of the first winding 120, the second winding 130 and the third winding 140. Compared with the related art, the stator assembly 100100 with the same outer size has more turns of windings, and the stator assembly 100 with the same number of winding turns has a smaller outer size. Such an arrangement is conducive to increasing the number of winding turns of the stator assembly 100, and is also conducive to the miniaturization of the stator assembly 100.

[0064] In one possible implementation, the fluid control device includes a stator assembly 100, which includes a housing 600, a winding skeleton 110, a first winding 120, a second winding 130, and a third winding 140. The housing 600 is injection-molded with the winding skeleton 110, the first winding 120, the second winding 130, and the third winding 140 as inserts.

[0065] The fluid control device includes a stator assembly 100 and a rotor assembly 200. The stator assembly 100 can drive the rotor assembly 200 to rotate. The fluid control device also includes a valve core assembly 500 and a valve seat portion 400. The valve seat portion 400 has a valve port. The rotor assembly 200 is connected to the valve core assembly 500. The valve core assembly 500 can cooperate with the valve port. The stator assembly 100 can drive the rotor assembly 200 to rotate. The rotor assembly 200 can drive the valve core assembly 500 to rotate, so that the valve core assembly 500 can move relative to the valve port to adjust the flow area of ​​the valve port.

[0066] For ease of understanding, Figures 1 to 3 As shown, part of the housing 600 is embedded in the stator assembly 100 , and the housing 600 plays a sealing and protective role for the stator assembly 100 .

[0067] At least a portion of rotor assembly 200 is located in first hole 113, and rotor assembly 200 is capable of rotating relative to stator assembly 100. When power is supplied to first winding 120, second winding 130, and third winding 140, they generate magnetic fields. These magnetic fields interact with the magnetic field of rotor assembly 200, causing rotor assembly 200 to rotate relative to stator assembly 100. The detailed structure of rotor assembly 200 is described in detail in the related art and is omitted here.

[0068] At least a portion of the magnetic isolation tube 300 is located in the first hole 113 , and at least a portion of the rotor assembly 200 is located in the magnetic isolation tube 300 .

[0069] The valve seat portion 400 is fixedly connected to the housing 600 . The valve seat portion 400 has a valve port. In actual use, fluid can flow through the valve port.

[0070] The valve core assembly 500 is in transmission connection with the rotor assembly 200, with at least a portion of the valve core assembly 500 positioned within the valve port. When the rotor assembly 200 rotates relative to the stator assembly 100, the rotor's mechanical energy is converted into mechanical energy within the valve core assembly 500, allowing the valve core assembly 500 to move relative to the valve seat 400. This arrangement facilitates the valve core assembly 500 in controlling the fluid within the valve port.

[0071] Those skilled in the art should understand that the various technical features of the above-described embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the various technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0072] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fluid control device, comprising a winding skeleton (110), a first winding (120), a second winding (130) and a third winding (140), wherein the winding skeleton (110) comprises an iron core portion (111) and an insulating portion (112), wherein the insulating portion (112) is injection-molded with the iron core portion (111) as an insert, wherein the first winding (120), the second winding (130) and the third winding (140) are arranged along the axial direction of the winding skeleton (110), wherein the first winding (120) is away from the iron core portion (111) relative to the insulating portion (112), the second winding (130) is away from the iron core portion (111) relative to the insulating portion (112), and the third winding (140) is away from the iron core portion (111) relative to the insulating portion (112).

2. The fluid control device according to claim 1, wherein: The core part (111) includes a first core part (1111), a second core part (1112), a third core part (1113) and a fourth core part (1114); the winding skeleton (110) has a first hole (113); along the axial direction of the first hole (113), the first core part (1111), the second core part (1112), the third core part (1113) and the fourth core part (1114) are arranged in sequence with gaps; at least part of the insulating part (112) is located in the gap between the first core part (1111) and the second core part (1112); at least part of the first winding (120) is located In the gap between the first core part (1111) and the second core part (1112), at least part of the insulating part (112) is located in the gap between the second core part (1112) and the third core part (1113), at least part of the second winding (130) is located in the gap between the second core part (1112) and the third core part (1113), at least part of the insulating part (112) is located in the gap between the third core part (1113) and the fourth core part (1114), and at least part of the third winding (140) is located in the gap between the third core part (1113) and the fourth core part (1114).

3. The fluid control device according to claim 2, wherein: The first core portion (1111) includes a first base portion (1111a) and a first tooth portion (1111b), wherein the first base portion (1111a) is located radially outside the first hole (113), and the first tooth portion (1111b) extends from the first base portion (1111a) toward one axial side of the first hole (113), and the insulating portion (112) is engaged with the first base portion (1111a); The second core portion (1112) includes a second base portion (1112a), a second tooth portion (1112b) and a third tooth portion (1112c); the second base portion (1112a) is located radially outside the first hole (113); the second tooth portion (1112b) extends from the second base portion (1112a) to the other axial side of the first hole (113); the third tooth portion (1112c) extends from the second base portion (1112a) to the one axial side of the first hole (113); the insulating portion (112) is engaged with the second base portion (1112a); and the insulating portion (112) is engaged with the second tooth portion (1112b) and the third tooth portion (1112c); The second core portion (1112) includes a third base portion (1113a), a fourth tooth portion (1113b) and a fifth tooth portion (1113c), wherein the third base portion (1113a) is located radially outside the first hole (113), the fourth tooth portion (1113b) extends from the third base portion (1113a) to the other axial side of the first hole (113), and the fifth tooth portion (1113c) extends from the third base portion (1113a) to the one axial side of the first hole (113), the insulating portion (112) is engaged with the third base portion (1113a), and the insulating portion (112) is engaged with the third tooth portion (1112c) and the fourth tooth portion (1113b); The fourth iron core includes a fourth base portion (1114a) and a sixth tooth portion (1114b), the fourth base portion (1114a) is located radially outside the first hole (113), the sixth tooth portion (1114b) extends from the fourth base portion (1114a) to the other axial side of the first hole (113), the insulating portion (112) and the fourth base portion (1114a) are interlocked, and the insulating portion (112) is interlocked with the fifth tooth portion (1113c) and the sixth tooth portion (1114b).

4. The fluid control device according to claim 3, characterized in that: The second base portion (1112a) includes a first sub-base portion (1112d) and a second sub-base portion (1112e), the first sub-base portion (1112d) is located radially outside the first hole (113), and the second sub-base portion (1112e) is located radially outside the first hole (113), the second tooth portion (1112b) extends from the first sub-base portion (1112d) to the other axial side of the first hole (113), and the third tooth portion (1112c) extends from the second sub-base portion (1112e) to the one axial side of the first hole (113), and the insulating portion (112) is engaged with the first sub-base portion (1112d) and the second sub-base portion (1112e); The third base (1113a) includes a third sub-base (1113d) and a fourth sub-base (1113e), wherein the third sub-base (1113d) is located radially outside the first hole (113), and the fourth sub-base (1113e) is located radially outside the first hole (113). The fourth tooth portion (1113b) extends from the third sub-base (1113d) to the other axial side of the first hole (113), and the fifth tooth portion (1113c) extends from the fourth sub-base (1113e) to the one axial side of the first hole (113). The insulating portion (112) is engaged with the third sub-base (1113d) and the fourth sub-base (1113e).

5. The fluid control device according to claim 4, characterized in that: The first base portion (1111a) includes a first accommodating portion (1111c), the insulating portion (112) includes a first embedded portion (1131), and at least a portion of the first embedded portion (1131) is located in the first accommodating portion (1111c); The first sub-base (1112d) includes a second accommodating portion (1112f), the second sub-base (1112e) includes a third accommodating portion (1112g), the insulating portion (112) includes a second embedded portion (1132), at least a portion of the second embedded portion (1132) is located in the second accommodating portion (1112f), and at least a portion of the second embedded portion (1132) is located in the third accommodating portion (1112g); The third sub-base (1113d) includes a fourth accommodating portion (1113f), the fourth sub-base (1113e) includes a fifth accommodating portion (1113g), the insulating portion (112) includes a third embedded portion (1133), at least part of the third embedded portion (1133) is located in the fourth accommodating portion (1113f), and at least part of the third embedded portion (1133) is located in the fifth accommodating portion (1113g); The fourth base portion (1114a) includes the sixth accommodating portion (1114c), the insulating portion (112) includes a fourth embedded portion (1134), and at least a portion of the fourth embedded portion (1134) is located in the sixth accommodating portion (1114c).

6. The fluid control device according to claim 5, characterized in that: The first sub-base (1112d) and the second sub-base (1112e) are connected in a position-limiting manner, and the structure of the position-limiting connection between the first sub-base (1112d) and the second sub-base (1112e) includes a first convex portion (1112h) and a first concave portion (1112i), and at least a portion of the first convex portion (1112h) is located in the first concave portion (1112i); The third sub-base (1113d) and the fourth sub-base (1113e) are connected in a limiting manner, and the structure of the limiting connection between the third sub-base (1113d) and the fourth sub-base (1113e) includes a second convex portion (1113h) and a second concave portion (1113i), and at least part of the second convex portion (1113h) is located in the second concave portion (1113i).

7. The fluid control device according to any one of claims 3 to 6, characterized in that: The insulating portion (112) includes a seventh accommodating portion (1121), an eighth accommodating portion (1122), a ninth accommodating portion (1123), a tenth accommodating portion (1124), an eleventh accommodating portion (1125), and a twelfth accommodating portion (1126); at least a portion of the first tooth portion (1111b) is located in the seventh accommodating portion (1121); at least a portion of the second tooth portion (1112b) is located in the eighth accommodating portion (1122); at least a portion of the third tooth portion (1112c) is located in the ninth accommodating portion (1123); at least a portion of the fourth tooth portion (1113b) is located in the tenth accommodating portion (1124); at least a portion of the fifth tooth portion (1113c) is located in the eleventh accommodating portion (1125); and at least a portion of the sixth tooth portion (1114b) is located in the twelfth accommodating portion (1130); The insulating portion (112) includes a fifth embedded portion (1126), a sixth embedded portion (1127) and a seventh embedded portion (1128), at least part of the fifth embedded portion (1126) is located in the gap between the first tooth portion (1111b) and the second tooth portion (1112b), at least part of the sixth embedded portion (1127) is located in the gap between the third tooth portion (1112c) and the fourth tooth portion (1113b), and at least part of the seventh embedded portion (1128) is located in the gap between the fifth tooth portion (1113c) and the sixth tooth portion (1114b).

8. The fluid control device according to any one of claims 2 to 7, characterized in that: The insulating portion (112) includes a side wall portion (1129), and the side wall portion (1129) includes a first side wall (1129a), a transition surface (1129b), and an end wall (1129c). Along the radial direction of the first hole (113), the transition surface (1129b) is located between the first side wall (1129a) and the end wall (1129c), and the transition surface (1129b) is a smooth surface.

9. The fluid control device according to any one of claims 2 to 8, characterized in that: Along the axial direction of the first hole (113), the distance between the first winding (120) and the first core part (1111) relative to the insulating part (112) is not greater than 0.5 mm, the distance between the first winding (120) and the second core part (1112) relative to the insulating part (112) is not greater than 0.5 mm, the distance between the second winding (130) and the second core part (1112) relative to the insulating part (112) is not greater than 0.5 mm, the distance between the second winding (130) and the third core part (1113) relative to the insulating part (112) is not greater than 0.5 mm, the distance between the third winding (140) and the third core part (1113) relative to the insulating part (112) is not greater than 0.5 mm, and the distance between the third winding (140) and the fourth core part (1114) relative to the insulating part (112) is not greater than 0.5 mm; And / or, along the radial direction of the first hole (113), the distance between the first winding (120) and the first core part (1111) relative to the insulating part (112) is not greater than 0.5 mm, the distance between the first winding (120) and the second core part (1112) relative to the insulating part (112) is not greater than 0.5 mm, the distance between the second winding (130) and the second core part (1112) relative to the insulating part (112) is not greater than 0.5 mm, the distance between the second winding (130) and the third core part (1113) relative to the insulating part (112) is not greater than 0.5 mm, the distance between the third winding (140) and the third core part (1113) relative to the insulating part (112) is not greater than 0.5 mm, and the distance between the third winding (140) and the fourth core part (1114) relative to the insulating part (112) is not greater than 0.5 mm.

10. The fluid control device according to any one of claims 1 to 9, characterized in that: The fluid control device comprises a stator assembly (100), the stator assembly (100) comprises a housing (600), the winding frame (110), the first winding (120), the second winding (130) and the third winding (140), and the housing (600) is formed by insert injection molding with the winding frame (110), the first winding (120), the second winding (130) and the third winding (140); The fluid control device comprises the stator assembly (100) and the rotor assembly (200), wherein the stator assembly (100) is capable of driving the rotor assembly (200) to rotate. The fluid control device further comprises a valve core assembly (500) and a valve seat portion (400), wherein the valve seat portion (400) has a valve port, the rotor assembly (200) is connected to the valve core assembly (500), and the valve core assembly (500) is capable of cooperating with the valve port. The stator assembly (100) is capable of driving the rotor assembly (200) to rotate, and the rotor assembly (200) is capable of driving the valve core assembly (500) to rotate, so that the valve core assembly (500) can move relative to the valve port to adjust the flow area of ​​the valve port.

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