Split type fixed impeller and fan

Abstract

The split type fixed impeller comprises an upper impeller body and a lower impeller body capable of being assembled with the upper impeller body, the upper impeller body comprises an upper bottom plate, a rotating shaft through hole is formed in the middle of the upper bottom plate, a plurality of upper blades are arranged in the circumferential direction of the upper surface of the upper bottom plate, and the rotating shaft through hole is communicated with the rotating shaft through hole. The lower impeller comprises a lower bottom plate, a plurality of lower blades are arranged on the lower surface of the lower bottom plate in the circumferential direction, and a plurality of male positioning pieces for positioning the lower bottom plate are arranged on the lower surface of the upper bottom plate. The upper surface of the lower bottom plate is provided with female positioning pieces which are used in cooperation with the male positioning pieces and have the same number as the male positioning pieces. The fixed impeller is arranged to be of a split structure, so that the lower impeller is installed after the movable impeller completes dynamic balance, the fixed impeller does not wrap the movable impeller during dynamic balance, cutting treatment on the movable impeller is facilitated, and the efficiency of the balancing procedure is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a split stator and a fan. Background Art

[0002] Currently, in traditional series-excited brushed motors, the stator impeller is typically integrally molded and mounted inside the motor. During production, products with high motor vibration requirements require the impeller to be balanced as a whole. However, due to structural limitations, the existing technology uses an integral stator impeller, which encloses the impeller and prevents complete balancing. This compromises product quality and fails to meet technical requirements. Utility Model Content

[0003] To this end, the present invention proposes a split-type stator impeller and fan, which divides the stator impeller into two sections, thereby facilitating balancing of the entire machine with respect to the moving impeller.

[0004] In order to solve the above technical problems, the utility model provides a split stator, comprising an upper impeller and a lower impeller that can be assembled with the upper impeller, wherein the upper impeller comprises an upper base plate, a shaft through hole is provided in the middle position of the upper base plate, and a plurality of upper blades are provided circumferentially along the upper surface of the upper base plate, and a connecting piece that cooperates with the casing is provided on the upper blade, and the lower impeller comprises a lower base plate, a plurality of lower blades are provided circumferentially on the lower surface of the lower base plate, the lower surface of the upper base plate is provided with a plurality of male positioning pieces for positioning with the lower base plate, and the upper surface of the lower base plate is provided with the same number of female positioning pieces used in conjunction with the male positioning pieces.

[0005] Furthermore, a bearing chamber connected to the shaft through hole is provided in the middle of the upper base plate.

[0006] Furthermore, the lower base plate is annular.

[0007] Furthermore, the upper blade is provided with a blade positioning member for positioning with the casing.

[0008] Furthermore, the female positioning member is a groove provided on the lower base plate, and the male positioning member is a protrusion integrally provided on the lower surface of the upper base plate and capable of being inserted into the groove.

[0009] Furthermore, the upper blades and the lower blades are arranged in opposite rotation directions.

[0010] The present application also provides a fan for installing the above-mentioned stator impeller, comprising a casing and an impeller cover fixedly connected to the casing, the casing being provided with connecting through holes of the same number used in conjunction with the connecting pieces, and positioning through holes used in conjunction with the blade positioning pieces, a driving motor being arranged in the casing, a stator impeller and a movable impeller being arranged in the impeller cover, a bearing being connected to the output shaft of the driving motor, the bearing being arranged in the bearing chamber, and one end of the output shaft of the driving motor being fixedly connected to the movable impeller through a nut and a gasket after passing through the rotating shaft through hole, and the movable impeller being located in the middle of the lower impeller.

[0011] As described above, the split stator and fan of the utility model have the following beneficial effects:

[0012] 1. In this application, the stator impeller is set as a split structure, so that the lower impeller is installed after the dynamic balancing of the moving impeller is completed. In this way, the stator impeller does not wrap around the moving impeller during dynamic balancing, which facilitates the cutting process of the moving impeller and improves the efficiency of the balancing process.

[0013] 2. By designing a bearing chamber in the stator impeller, the stator impeller can be directly connected to the rotating shaft without the need for an iron bracket, which reduces costs and also reduces the difficulty of installation.

[0014] 3. A connector for the stator impeller is provided on the housing, thereby eliminating the need to install the stator impeller inside the housing as in the prior art, thereby facilitating the installation of the stator impeller. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of the split stator impeller of the utility model.

[0016] Figure 2 This is a schematic diagram of the back structure of the upper impeller of the present invention.

[0017] Figure 3 This is a front structural schematic diagram of the lower impeller of the present invention.

[0018] Figure 4 This is a schematic diagram of the back structure of the lower impeller of the present invention.

[0019] Figure 5 This is a structural diagram of the fan described in the utility model.

[0020] Figure 6 This is a structural schematic diagram of the fan of the utility model without the impeller cover.

[0021] Figure 7 This is a schematic structural diagram from another angle of the fan of the utility model with the impeller cover removed.

[0022] In the figure: 1, upper base plate, 2, lower base plate, 3, upper blade, 4, connecting column, 5, undercut, 6, positioning protrusion, 7, bearing chamber, 8, connecting protrusion, 9, shaft through hole, 10, connecting groove, 11, lower blade, 12, casing, 13, impeller cover, 14, rubber ring, 15, stator impeller, 16, movable impeller. DETAILED DESCRIPTION

[0023] The following describes the implementation of the present invention through specific embodiments. People familiar with this technology can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0024] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for understanding and reading by those familiar with this technology, and are not used to limit the conditions for implementation of the present invention. Therefore, they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose of the present invention. At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments in their relative relationships should also be considered as the scope of implementation of the present invention without substantially changing the technical content.

[0025] See Figure 1-7 The utility model provides a split type fixed impeller, comprising an upper impeller and a lower impeller that can be assembled with the upper impeller, both of which are made of the same material.

[0026] Among them, the upper impeller includes an upper base plate 1, and a bearing chamber 7 protruding from the upper base plate 1 is provided in the middle position of the upper base plate 1, and a rotating shaft through hole 9 connected to the bearing chamber 7 is opened in the middle position of the upper base plate 1. By setting the bearing chamber 7 protruding from the upper base plate 1, it can be used to place the bearings on the rotating shaft, so that there is no need to install an iron bracket for placing the bearings.

[0027] A circle of upper blades 3 is provided along the edge of the upper surface of the upper base plate 1. The upper blades 3 are integrally formed with the upper base plate 1. The distance between each two upper blades 3 is the same, and the rotation angle of each upper blade 3 is the same. An air inlet, an air duct and an air outlet are formed between each two upper blades 3. The air inlet is farther away from the bearing chamber 7 than the air outlet.

[0028] In order to facilitate installation, the upper blade 3 is provided with a plurality of connectors that cooperate with the casing 12. By providing the connectors on the upper blade 3, it is not necessary to open bolt holes on the upper base plate 1 as in the prior art, and the stator is installed inside the casing through an iron bracket, which facilitates the installation of the stator.

[0029] Specifically, the connecting member is a connecting column 4 integrally formed with the upper blade 3, and the connecting column 4 is integrally formed with an undercut 5. At the same time, the housing 12 is provided with connecting through holes at corresponding positions, the same number as the connecting column 4 and used in conjunction with each other, and rubber rings are adhered to the housing at the connecting through holes, so that the undercut 5 and the housing 12 are more tightly engaged.

[0030] In this embodiment, five connecting columns 4 are provided, which can effectively improve the connection strength between the casing 12 and the upper impeller. During the specific installation, the undercut 5 is directly engaged with the connecting through hole of the casing 12, which makes the installation more convenient. In addition, the provision of the undercut 5 reduces the steps of opening threaded holes and tightening screws, making the installation faster.

[0031] At the same time, in order to more quickly align the undercut 5 with the connecting through hole, the upper blade 3 is also provided with at least one blade positioning member for positioning with the housing 12. In this embodiment, two are symmetrically provided. Specifically, the blade positioning member is a positioning protrusion 6 that is integrally formed with the upper blade 3 and protrudes from the upper blade 3. The highest surface of the positioning protrusion 6 is higher than the height of the undercut 5. At the same time, a positioning through hole is provided on the housing 12 for use with the positioning protrusion 6.

[0032] The lower blades 11 include a ring-shaped lower base plate 2, and a plurality of lower blades 11 are circumferentially arranged on the lower surface of the lower base plate 2. The number of upper blades 3 is the same as the number of lower blades 11, and the upper blades 3 and the lower blades 11 have different downloading directions. Specifically, from the perspective of looking down at the stator 15, the upper blades 3 rotate clockwise from the edge to the middle, and the lower blades 11 rotate counterclockwise from the edge to the middle.

[0033] In this embodiment, in order to quickly assemble the upper impeller and the lower impeller together, the lower surface of the upper base plate 1 is provided with a plurality of male positioning parts for positioning with the lower base plate 2, and the upper surface of the lower base plate 2 is provided with the same number of female positioning parts used in conjunction with the male positioning parts.

[0034] Specifically, the female positioning member is a connecting groove 10 opened on the lower base plate 2, and the male positioning member is a connecting protrusion 8 that is integrally arranged on the lower surface of the upper base plate 1 and can be inserted into the connecting groove 10, and a circle of O-rings is provided on the inner wall edge of the connecting groove 10, which can achieve a clamping effect on the one hand and prevent moisture from entering the connecting groove 10 on the other hand.

[0035] At the same time, in order to facilitate the connection between the stator impeller 15 and the casing 12 and the drive motor inside the casing 12, some upper blades 3 are provided with avoidance steps on the side close to the bearing chamber 7 to facilitate the installation of the stator impeller 15 and the casing 12.

[0036] At the same time, in this embodiment, a fan installed with the above-mentioned fixed impeller is also proposed, including a casing 12, the casing 12 is provided with connecting through holes of the same number used in conjunction with the undercut 5, and positioning through holes used in conjunction with the positioning protrusions 6, a driving motor is arranged in the casing 12, and a bearing is connected to the output shaft of the driving motor, the bearing is arranged in the bearing chamber 7, and the output shaft end of the driving motor passes through the rotating shaft through hole 9 and is fixedly connected to the impeller 16 through a nut and a gasket, the impeller 16 is located in the middle of the lower impeller, and at the same time, an impeller cover 13 is installed outside the stator impeller 15.

[0037] During the specific installation, the drive motor is installed in the casing 12, and the impeller is installed on the casing 12 through the connecting parts. The output shaft of the drive motor passes through the rotating shaft through hole 9 and is fixedly connected to the impeller 16 through nuts and gaskets. Then the impeller 16 is subjected to a balancing test. After the balancing test is completed, the lower impeller is installed, and then the impeller cover 13 is installed. The impeller cover 13 is pressed together with the casing 12, and the lower impeller is pressed by the impeller cover 13.

[0038] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.

Claims

1. A split stator impeller, characterized in that: It includes an upper impeller and a lower impeller that can be assembled with the upper impeller, wherein the upper impeller includes an upper base plate, a shaft through hole is provided in the middle position of the upper base plate, and a plurality of upper blades are provided along the upper surface of the upper base plate, and a connecting piece that cooperates with the casing is provided on the upper blade; the lower impeller includes a lower base plate, a plurality of lower blades are provided on the lower surface of the lower base plate, the lower surface of the upper base plate is provided with a plurality of male positioning pieces for positioning with the lower base plate, and the upper surface of the lower base plate is provided with the same number of female positioning pieces used in conjunction with the male positioning pieces.

2. The split stator impeller according to claim 1, characterized in that: A bearing chamber connected to the rotating shaft through hole is provided in the middle of the upper base plate.

3. The split stator according to claim 1, characterized in that: The lower base plate is annular.

4. The split stator impeller according to claim 1, characterized in that: The upper blade is also provided with a blade positioning member for positioning with the casing.

5. The split stator impeller according to claim 1, characterized in that: The female positioning member is a groove formed on the lower base plate, and the male positioning member is a convex block integrally provided on the lower surface of the upper base plate and capable of being inserted into the groove.

6. The split stator impeller according to claim 1, characterized in that: The upper blades and the lower blades are arranged in opposite directions of rotation.

7. A fan equipped with a stator according to any one of claims 1 to 6, characterized in that: It includes a casing and an impeller cover fixedly connected to the casing, the casing is provided with connecting through holes of the same number used in conjunction with the connecting parts, and positioning through holes used in conjunction with the blade positioning parts, a driving motor is arranged in the casing, a fixed impeller and a movable impeller are arranged in the impeller cover, a bearing is connected to the output shaft of the driving motor, the bearing is arranged in the bearing chamber, and one end of the output shaft of the driving motor passes through the rotating shaft through hole and is fixedly connected to the movable impeller through a nut and a gasket, and the movable impeller is located in the middle of the lower impeller.

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