CN209818330U - Automobile electronic water pump - Google Patents
Automobile electronic water pump Download PDFInfo
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- CN209818330U CN209818330U CN201920694555.9U CN201920694555U CN209818330U CN 209818330 U CN209818330 U CN 209818330U CN 201920694555 U CN201920694555 U CN 201920694555U CN 209818330 U CN209818330 U CN 209818330U
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Abstract
The application relates to an automotive electronic water pump belongs to automotive electronic water pump technical field, this automotive electronic water pump: the method comprises the following steps: a motor housing; the motor stator and the motor rotor are arranged in the motor shell, and the motor stator is of a tooth slot structure; the impeller is connected with the front end of the motor rotor; the volute is covered at the front end of the motor shell and provided with an impeller containing cavity for containing the impeller, and a partition tongue is arranged on the volute; wherein the separation tongue is not coincident with any tooth socket on the tooth socket structure; the problem that the existing automobile electronic water pump has high noise can be solved; because the baffle tongue is not opposite to the tooth groove structure, the excitation frequency of the blade can not be excited with the torque frequency generated by the motor part due to the tooth groove effect to cause resonance, so that the noise generated by the resonance caused by the mutual excitation of the excitation frequency and the torque frequency can be eliminated, and the noise of the automobile electronic water pump is reduced.
Description
Technical Field
The application relates to an automotive electronic water pump, and belongs to the technical field of automotive electronic water pumps.
Background
In automobile manufacturing, a coolant is often used, for example, an engine of an automobile needs to be cooled, and an electronic water pump is often used for supplying the coolant to a part needing cooling.
Compared with the traditional mechanical water pump driven by a belt pulley, the electric water pump is easy to generate noise. And the electronic water pump can continue to work when the engine does not work, and the noise is more obvious at the moment. How to reduce the noise of the electronic water pump is an urgent problem to be solved.
SUMMERY OF THE UTILITY MODEL
The application provides an automotive electronic water pump, can solve the great problem of current automotive electronic water pump noise. The application provides the following technical scheme:
an automotive electronic water pump, comprising:
the automotive electronic water pump includes:
a motor housing;
the motor stator and the motor rotor are arranged in the motor shell, and the motor stator is of a tooth slot structure;
the impeller is connected with the front end of the motor rotor;
the volute is covered at the front end of the motor shell and provided with an impeller containing cavity for containing the impeller, and a partition tongue is arranged on the volute;
wherein the separation tongue is not coincident with any tooth groove on the tooth groove structure.
Optionally, a first limit groove is arranged on the motor shell, and the first limit groove limits the installation position of the motor stator in the motor shell, so that the tooth slot of the motor stator is not overlapped with the separation tongue.
Optionally, a first alignment mark is arranged on the motor shell, and a second alignment mark is arranged on the motor stator;
when the first alignment mark and the second alignment mark are opposite, the tooth slot of the motor stator is not overlapped with the separation tongue.
Optionally, the fixing bolt angle between the volute and the motor housing is such that the tongue and the tooth slot do not coincide.
Optionally, a second limit groove is arranged on the motor housing, and the second limit groove limits the connection position of the volute and the motor housing, so that the tooth slot of the motor stator is not overlapped with the separation tongue.
Optionally, an angle between the top point of the tongue partition and any tooth groove in the tooth groove structure is a preset angle; the preset angle enables the separation tongue and the tooth socket not to coincide;
wherein, the angle between the top point of the tongue separation and the tooth socket is as follows: and an included angle between a first connecting line formed by the top point of the partition tongue and the center of the motor stator and a second connecting line formed by the center of the tooth groove and the center of the motor stator.
Optionally, the impeller and the motor rotor are fixed to a shaft and bearing train to rotate at the same speed.
Optionally, the volute and the motor stator are stationary relative to the motor housing.
The beneficial effect of this application lies in: by arranging a motor shell; the motor comprises a motor stator and a motor rotor which are arranged in a motor shell, wherein the motor stator is of a tooth slot structure; the impeller is connected with the front end of the motor rotor; the volute is covered at the front end of the motor shell and provided with an impeller containing cavity for containing an impeller, and the volute is provided with a separation tongue; wherein, the separation tongue is not overlapped with any tooth socket on the tooth socket structure; the problem that the existing automobile electronic water pump has high noise can be solved; because the baffle tongue is not opposite to the tooth groove structure, the excitation frequency of the blade can not be excited with the torque frequency generated by the motor part due to the tooth groove effect to cause resonance, so that the noise generated by the resonance caused by the mutual excitation of the excitation frequency and the torque frequency can be eliminated, and the noise of the automobile electronic water pump is reduced.
The foregoing description is only an overview of the technical solutions of the present application, and in order to make the technical solutions of the present application more clear and clear, and to implement the technical solutions according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present application and the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of an automotive electronic water pump according to an embodiment of the present disclosure;
FIG. 2 is a schematic structural diagram of a volute, an impeller and impeller blades in an automotive electric water pump according to an embodiment of the present disclosure;
FIG. 3 is a schematic structural diagram of a motor stator, a motor rotor and tooth slots in an automotive electronic water pump according to an embodiment of the present disclosure;
FIG. 4 is a cross-sectional view of an automotive electric water pump according to an embodiment of the present application;
FIG. 5 is a schematic diagram illustrating misalignment of a gullet and a tongue of an automotive electronic water pump according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a stator of an electric machine according to another embodiment of the present application.
Detailed Description
The following detailed description of embodiments of the present application will be described in conjunction with the accompanying drawings and examples. The following examples are intended to illustrate the present application but are not intended to limit the scope of the present application.
Fig. 1 to 4 are schematic structural diagrams of an automotive electronic water pump according to an embodiment of the present application, and as shown in fig. 1, the automotive electronic water pump at least includes: a motor housing 1; the motor comprises a motor stator 2 and a motor rotor 3 which are arranged in a motor shell 1, wherein the motor stator 2 is of a tooth slot structure; an impeller 4 connected to the front end of the motor rotor 3; a volute 5 covering the front end of the motor housing 1 and having an impeller receiving cavity for receiving the impeller 4, and a partition tongue 51 (see fig. 2) provided on the volute 5. The spline structure includes a plurality of splines 21 (refer to fig. 3).
The impeller 4 and the motor rotor 3 are fixed on a shaft and bearing system 6 and rotate at the same speed. The volute 5 and the motor stator 2 are stationary relative to the motor housing 1.
In the above structure, as can be seen from fig. 2, when the blades of the impeller 4 pass through the partition tongue 51 on the volute 5, the blades of the impeller 4 will generate an excitation frequency due to the action of the fluid. This frequency is related to impeller speed, number of blades, etc.
As can be seen from fig. 3, the permanent magnet field of the motor rotor 3 interacts with the slots 21 of the motor stator 2 due to the cogging effect, and a torque is generated in the circumferential direction. In variable speed drive, the vibrations and noise generated by the cogging 21 torque will be amplified when the torque frequency coincides with the excitation frequency of the blades.
In view of the above noise generation cause, in the present embodiment, the tongue 51 does not overlap any of the slots 21 in the slot structure. At this time, the excitation frequency of the blade will not excite resonance with the torque frequency generated by the motor part due to the cogging effect.
Referring to fig. 5, the angle between the apex of the tongue 51 and any one of the tooth grooves 21 in the tooth groove structure is a predetermined angle a; the predetermined angle a is such that the separation tongue 51 is not coincident with the tooth slot 21. The angle between the top point of the tongue 51 and the tooth slot 21 is as follows: and the included angle between a first connecting line 510 formed by the vertex of the separation tongue 51 and the center of the motor stator 2 and a second connecting line 520 formed by the center of the tooth slot 21 and the center of the motor stator 2.
Alternatively, the ways of ensuring that the slots 21 of the motor stator 2 do not coincide with the tongues 51 include, but are not limited to, the following:
the first method comprises the following steps: referring to fig. 6, a first alignment mark (not shown) is provided on the motor housing 1, and a second alignment mark 61 is provided on the motor stator 2; the first alignment mark and the second alignment mark are opposite to each other, so that the tooth slots 21 of the motor stator 2 are not overlapped with the separation tongues 51.
And the second method comprises the following steps: the motor housing 1 is provided with a first limit groove which limits the installation position of the motor stator 2 in the motor housing 1, so that the tooth slot 21 of the motor stator 2 is not overlapped with the separation tongue 51.
And the third is that: the fixing bolt angle between the volute 5 and the motor housing 1 is such that the tongue 51 does not coincide with the tooth groove 21. At this time, when the volute 5 and the motor housing 1 are connected using the fixing bolt, the fixing bolt angle may be controlled so that the tongue 51 and the tooth groove 21 do not coincide.
And fourthly: the motor housing 1 is provided with a second limit groove which limits the connection position of the volute 5 and the motor housing 1, so that the tooth slot 21 of the motor stator 2 is not overlapped with the separation tongue 51.
Of course, the way of ensuring that the tooth slots 21 of the motor stator 2 do not coincide with the separation tongues 51 may be other ways, and this embodiment is not listed here.
Of course, the automotive electronic water pump may also include other components, such as: rear end cap, graphite bush, magnetic shoe, graphite pad, water pump axle etc. this embodiment no longer gives unnecessary details.
In summary, the electronic water pump for the automobile provided by the embodiment is provided with the motor shell; the motor comprises a motor stator and a motor rotor which are arranged in a motor shell, wherein the motor stator is of a tooth slot structure; the impeller is connected with the front end of the motor rotor; the volute is covered at the front end of the motor shell and provided with an impeller containing cavity for containing an impeller, and the volute is provided with a separation tongue; wherein, the separation tongue is not overlapped with any tooth socket on the tooth socket structure; the problem that the existing automobile electronic water pump has high noise can be solved; because the baffle tongue is not opposite to the tooth groove structure, the excitation frequency of the blade can not be excited with the torque frequency generated by the motor part due to the tooth groove effect to cause resonance, so that the noise generated by the resonance caused by the mutual excitation of the excitation frequency and the torque frequency can be eliminated, and the noise of the automobile electronic water pump is reduced.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. An automotive electronic water pump, characterized in that, the automotive electronic water pump includes:
a motor housing;
the motor stator and the motor rotor are arranged in the motor shell, and the motor stator is of a tooth slot structure;
the impeller is connected with the front end of the motor rotor;
the volute is covered at the front end of the motor shell and provided with an impeller containing cavity for containing the impeller, and a partition tongue is arranged on the volute;
wherein the separation tongue is not coincident with any tooth groove on the tooth groove structure.
2. The automotive electric water pump as claimed in claim 1, wherein the motor housing is provided with a first limit groove, and the first limit groove defines a mounting position of the motor stator in the motor housing such that a tooth slot of the motor stator is not coincident with the spacer.
3. The automotive electronic water pump as claimed in claim 1, wherein a first alignment mark is provided on the motor housing, and a second alignment mark is provided on the motor stator;
when the first alignment mark and the second alignment mark are opposite, the tooth slot of the motor stator is not overlapped with the separation tongue.
4. The automotive electric water pump of claim 1, wherein a fixing bolt angle between the volute and the motor housing is such that the tongue and the tooth slot do not coincide.
5. The automotive electric water pump as claimed in claim 1, wherein a second limit groove is formed in the motor housing, and the second limit groove defines a connection position of the volute and the motor housing such that a tooth groove of the motor stator does not coincide with the tongue.
6. The automotive electronic water pump as claimed in any one of claims 1 to 5, wherein an angle between a top point of the tongue and any one of the tooth grooves in the tooth groove structure is a preset angle; the preset angle enables the separation tongue and the tooth socket not to coincide;
wherein, the angle between the top point of the tongue separation and the tooth socket is as follows: and an included angle between a first connecting line formed by the top point of the partition tongue and the center of the motor stator and a second connecting line formed by the center of the tooth groove and the center of the motor stator.
7. The automotive electric water pump as claimed in any one of claims 1 to 5, wherein the impeller and the motor rotor are fixed to a shaft and bearing system to rotate at the same speed.
8. The automotive electric water pump as defined in any one of claims 1 to 5, wherein the volute and the motor stator are stationary relative to the motor housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920694555.9U CN209818330U (en) | 2019-05-15 | 2019-05-15 | Automobile electronic water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920694555.9U CN209818330U (en) | 2019-05-15 | 2019-05-15 | Automobile electronic water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209818330U true CN209818330U (en) | 2019-12-20 |
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ID=68883377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920694555.9U Active CN209818330U (en) | 2019-05-15 | 2019-05-15 | Automobile electronic water pump |
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| CN (1) | CN209818330U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110017288A (en) * | 2019-05-15 | 2019-07-16 | 苏州玲珑汽车科技有限公司 | Electronic water pump for automobile |
| WO2022042696A1 (en) * | 2020-08-27 | 2022-03-03 | 芜湖美的厨卫电器制造有限公司 | Pump cover, water pump, and water heater |
-
2019
- 2019-05-15 CN CN201920694555.9U patent/CN209818330U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110017288A (en) * | 2019-05-15 | 2019-07-16 | 苏州玲珑汽车科技有限公司 | Electronic water pump for automobile |
| WO2022042696A1 (en) * | 2020-08-27 | 2022-03-03 | 芜湖美的厨卫电器制造有限公司 | Pump cover, water pump, and water heater |
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