Waterproof sleeve and electronic water pump
By setting up multiple parallel liquid flow channels in the water barrier of the electronic water pump to form cooling channels, the problems of insufficient heat dissipation performance of the electronic water pump and high shaft processing cost are solved, and better heat dissipation effect and strength are achieved.
Patent Information
- Application Number
- CN202323584914.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-27
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2033-12-27
AI Technical Summary
The insufficient heat dissipation performance of the electronic water pump leads to an increase in the temperature of the electronic control module, affecting normal operation, and the processing cost of the hollow shaft is high and the process is complex, which may affect the overall strength.
A water barrier is designed, with multiple parallel liquid flow channels in the sleeve to form cooling channels, and the cooling liquid flows through these channels to remove heat, avoiding the liquid outlet channels in the rotation shaft, and improving the heat dissipation effect.
It realizes reliable heat dissipation of electronic water pumps, reduces the cost of shaft processing and improves overall strength, has a larger cooling channel area, better drainage effect, and extends the service life of the equipment.
Smart Images
Figure CN222141607U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of water pumps, in particular to a water-isolating sleeve and an electronic water pump. Background Art
[0002] The heat dissipation performance of the electronic water pump is crucial. The electronic control module of the electronic water pump will generate heat during operation, which will cause the operating temperature of the electronic components on the electronic control module to increase, affecting the normal operation of the electronic water pump.
[0003] In order to achieve heat dissipation of the electronic water pump, a liquid outlet channel is usually opened inside the rotating shaft. Taking CN107725395A as an example, the rotating shaft is hollow to form a liquid outlet channel, and the liquid outlet channel connects the rotor mounting cavity and the pump body cavity. The cooling liquid can only flow out through the liquid outlet channel inside the rotating shaft, thereby achieving heat dissipation. It can be seen that the processing cost of the hollow rotating shaft is high and the process is complicated. In addition, when processing the liquid outlet channel, it is also necessary to consider whether it will affect the overall strength of the rotating shaft, which is more restricted. Utility Model Content
[0004] The purpose of the utility model is to provide a waterproof sleeve and an electronic water pump, in which a liquid flow channel is formed on the inner side of the waterproof sleeve, and there is no need to set a liquid outlet channel in the rotating shaft, which not only solves the problem of high processing cost of the rotating shaft, but also realizes reliable heat dissipation of the electronic water pump.
[0005] In order to achieve the above object, the utility model provides a water-blocking sleeve, which is used to be installed inside the volute of an electronic water pump, and the water-blocking sleeve includes:
[0006] The sleeve is hollow and is used to place the rotor of the electronic water pump, and there is a gap between the inner wall of the sleeve and the rotor;
[0007] A plurality of parallel liquid flow channels are sequentially distributed along the circumference of the sleeve body and are formed at intervals on the inner side wall of the sleeve body. The liquid flow channels extend along the axial direction of the sleeve body.
[0008] Preferably, all liquid flow channels are evenly distributed along the circumference of the sleeve body.
[0009] Preferably, all liquid flow channels have the same shape and size.
[0010] Preferably, reinforcing ribs are also provided on the outer periphery of the sleeve.
[0011] Preferably, one end of the sleeve body is a contracted structure, and the other end is a flared structure.
[0012] Preferably, the waterproof sleeve is integrally injection molded.
[0013] The utility model also provides an electronic water pump, comprising the above-mentioned water-isolating sleeve.
[0014] Preferably, the electronic water pump includes a volute and a rear end cover, which form a accommodating chamber. A rotatable shaft is provided in the accommodating chamber, and a rotor is sleeved on the shaft. The rotor and the shaft are fixedly connected. A watertight jacket is located in the accommodating chamber, and both the rotor and the shaft are located in the watertight jacket. The gap and the liquid flow channel form a cooling channel. An electronic control module is also provided under the watertight jacket. The heat of the electronic control module can be transferred to the rear end cover, and the cooling liquid in the cooling channel is in contact with the rear end cover to take away the heat of the electronic control module.
[0015] Preferably, bearings are provided at both ends of the rotating shaft, and the cooling liquid in the cooling channel flows through one side of the bearing to take away the heat of the bearing.
[0016] Compared with the above-mentioned background technology, the water-blocking sleeve provided by the utility model is used to be installed inside the volute of an electronic water pump. The water-blocking sleeve includes a sleeve body and a liquid flow channel. The sleeve body is hollow, and the rotor of the electronic water pump is placed inside the sleeve body. There is a gap between the inner wall of the sleeve body and the rotor. There are multiple liquid flow channels, which are arranged parallel to each other. The liquid flow channels are distributed sequentially along the circumference of the sleeve body. The multiple liquid flow channels are formed on the inner wall of the sleeve body at intervals, and the liquid flow channels extend along the axial direction of the sleeve body.
[0017] It can be seen that the cooling liquid can flow by utilizing the liquid flow channel inside the watertight sleeve and the gap between the inner wall of the sleeve and the rotor, that is, the cooling liquid can flow in the cooling channel formed by the above-mentioned gap and the liquid flow channel. The cooling liquid flows in the cooling channel inside the watertight sleeve to cool the corresponding components without opening a liquid outlet channel in the hollow of the rotating shaft, which will not affect the overall strength of the rotating shaft. At the same time, the cooling channel has a larger area, the drainage effect is better, and the heat dissipation of the electronic water pump is reliable.
[0018] The electronic water pump including the water-isolating sleeve provided by the utility model has beneficial effects which can be referred to above and will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.
[0020] Figure 1 A cross-sectional view of an electronic water pump provided by an embodiment of the utility model;
[0021] Figure 2 for Figure 1 Structural diagram of the middle water jacket;
[0022] Figure 3 for Figure 2A-direction schematic diagram in FIG.
[0023] in:
[0024] The volute 1, the rear end cover 2, the rotating shaft 3, the rotor 4, the water blocking sleeve 5, the cooling channel 6, the electronic control module 7, the thermal insulation pad 71, the bearing 8, the stator 9, the sleeve body 10, the shrinking structure 101, the expanding structure 102, and the liquid flow channel 20. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0026] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0027] The utility model provides a water-proof sleeve, see attached Figure 1 To Attachment Figure 3 The watertight sleeve 5 is used to be installed inside the volute 1 of the electronic water pump. The watertight sleeve 5 includes a sleeve body 10 and a liquid flow channel 20 . The liquid flow channel 20 can be formed in the sleeve body 10 .
[0028] The water-blocking sleeve 5 can be specifically integrally injection-molded. The sleeve body 10 is hollow and has a columnar structure. The hollow interior is used to place the rotor 4 of the electronic water pump. There is a gap between the inner wall of the sleeve body 10 and the rotor 4.
[0029] The liquid flow channel 20 is provided in the sleeve body 10 . There are multiple liquid flow channels 20 , which are arranged parallel to each other. The liquid flow channels 20 are distributed sequentially along the circumference of the sleeve body 10 . All liquid flow channels 20 are formed at intervals on the inner wall of the sleeve body 10 . The liquid flow channels 20 extend along the axial direction of the sleeve body 10 .
[0030] Attach Figure 1 Taking the shown orientation as an example, the watertight sleeve 5 is vertically arranged, that is, the sleeve body 10 and the liquid flow channel 20 are both vertical, and the gap between the inner wall of the sleeve body 10 and the rotor 4 and the liquid flow channel 20 form a cooling channel 6. The cooling liquid can flow in the cooling channel 6. When the electronic water pump is running, the cooling liquid flows into the volute 1 from the water inlet, and a small part of the cooling liquid enters the cooling channel 6 through the water inlet hole under the impeller, that is, enters the interior of the watertight sleeve 5, and then the cooling liquid passes through the cooling channel 6, along the rotor 4 to the bottom, and then flows back to the volute 1 from the gap between the rotor 4 and the watertight sleeve 5.
[0031] It can be seen that the utility model utilizes the water-blocking sleeve 5 to drain the cooling liquid, thereby avoiding the problem that the coolant of the traditional water pump is introduced mainly through the hollow rotating shaft. The electronic water pump of the utility model eliminates the hollow fixed shaft, and introduces the cooling liquid through the cooling channel 6 inside the water-blocking sleeve 5. The area available for liquid to pass through is larger than the area through which the hollow fixed shaft passes, and the drainage effect is better.
[0032] In some embodiments, all liquid flow channels 20 are evenly distributed along the circumference of the sleeve body 10, so that the flow rate of the cooling liquid at any position in the cooling channel 6 is consistent, thereby ensuring that the flow process of the cooling liquid is stable and reliable.
[0033] The shapes and sizes of all the liquid flow channels 20 can be set to be consistent, so that when installing the waterproof sleeve 5, there is no need to distinguish the circumferential position of the waterproof sleeve 5, which further simplifies the installation steps and improves the installation efficiency.
[0034] In some embodiments, reinforcing ribs may be further provided on the periphery of the casing 10. Specifically, there may be a plurality of reinforcing ribs that are evenly distributed on the periphery of the casing 10. The reinforcing ribs may extend along the axial direction of the casing 10. By providing the reinforcing ribs, the structural strength of the watertight casing can be improved, thereby extending the service life of the watertight casing.
[0035] One end of the sleeve 10 can also be provided with a contraction structure 101, and the other end of the sleeve 10 can be provided with an expansion structure 102. Figure 2 As shown, the watertight sleeve 5 can be stably installed at the corresponding position of the electronic water pump by using the necking structure 101 and the expanding structure 102 respectively. Of course, according to actual needs, the two ends of the sleeve 10 can also be set as other structures to achieve the installation of the watertight sleeve 5; in addition, the sleeve 10, the necking structure 101, the expanding structure 102, the liquid flow channel 20 and the reinforcing ribs can be integrally injection molded, so that the watertight sleeve 5 is an integral structure, thereby improving the structural strength.
[0036] The utility model also provides an electronic water pump, including the watertight sleeve 5 described above, the electronic water pump also includes a volute 1 and a rear end cover 2, the volute 1 and the rear end cover 2 form a containing chamber, a rotatable shaft 3 is provided in the containing chamber, a rotor 4 is sleeved on the shaft 3, the rotor 4 and the shaft 3 are fixedly connected, the watertight sleeve 5 is located in the containing chamber, the rotor 4 and the shaft 3 are both located in the watertight sleeve 5, the gap and the liquid flow channel 20 form a cooling channel 6, an electric control module 7 is also provided below the watertight sleeve 5, the heat of the electric control module 7 can be transferred to the rear end cover 2, the cooling liquid in the cooling channel 6 is in contact with the rear end cover 2 to take away the heat of the electric control module 7.
[0037] A thermal insulation pad 71 may also be provided on the upper surface of the electronic control module 7. The heat of the electronic control module 7 is transferred to the thermal insulation pad 71, and then transferred to the rear end cover 2 by the thermal insulation pad 71. The cooling liquid contacts the rear end cover 2 and dissipates heat through the flow of the cooling liquid. While being able to dissipate heat for the electronic control module 7, it can also dissipate heat for the rotor 4 and the stator 9, thereby extending the service life of the electronic water pump.
[0038] Bearings 8 are provided at both ends of the rotating shaft 3. The cooling liquid in the cooling channel 6 flows through one side of the bearing 8 to take away the heat of the bearing 8. It can be seen that the cooling liquid in the cooling channel 6 can absorb the heat generated by the mutual friction between the rotor 4 and the rotating shaft 3, thereby reducing the wear of the rotor 4 and dissipating the heat for the bearing 8, thereby ultimately improving the service life of the electronic water pump.
[0039] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.
Claims
1. A waterproof sleeve, characterized in that: The water-blocking sleeve is used to be installed inside the volute of the electronic water pump, and the water-blocking sleeve comprises: The casing (10) is hollow and is used to house the rotor of the electronic water pump, and a gap is provided between the inner side wall of the casing (10) and the rotor; A plurality of parallel liquid flow channels (20) are sequentially distributed along the circumference of the sleeve (10) and are formed at intervals on the inner wall of the sleeve (10). The liquid flow channels (20) extend along the axial direction of the sleeve (10).
2. The watertight sleeve according to claim 1, characterized in that: All of the liquid flow channels (20) are evenly distributed along the circumference of the sleeve body (10).
3. The waterproof sleeve according to claim 1, characterized in that: All of the liquid flow channels (20) have the same shape and size.
4. The watertight sleeve according to claim 1, characterized in that: Reinforcing ribs are also provided on the outer periphery of the sleeve body (10).
5. The watertight sleeve according to claim 1, characterized in that: One end of the sleeve (10) is a contracted structure (101), and the other end is a flared structure (102).
6. The watertight sleeve according to claim 1, characterized in that: The water-isolating sleeve is integrally injection-molded.
7. An electronic water pump, characterized in that: Comprising a watertight sleeve as described in any one of claims 1 to 6 above.
8. The electronic water pump according to claim 7, characterized in that: The electronic water pump comprises a volute (1) and a rear end cover (2), wherein the volute (1) and the rear end cover (2) form a receiving chamber, wherein a rotatable shaft (3) is provided in the receiving chamber, wherein a rotor (4) is sleeved on the shaft (3), wherein the rotor (4) and the shaft (3) are fixedly connected, wherein the watertight sleeve (5) is located in the receiving chamber, wherein both the rotor (4) and the shaft (3) are located in the watertight sleeve (5), wherein the gap and the liquid flow channel (20) form a cooling channel (6), wherein an electric control module (7) is further provided below the watertight sleeve (5), wherein the heat of the electric control module (7) can be transferred to the rear end cover (2), wherein the cooling liquid in the cooling channel (6) contacts the rear end cover (2) to take away the heat of the electric control module (7).
9. The electronic water pump according to claim 8, characterized in that: Bearings (8) are provided at both ends of the rotating shaft (3), and the cooling liquid in the cooling channel (6) flows through one side of the bearing (8) to remove heat from the bearing (8).