Water-cooled motor shell

Abstract

The utility model discloses a water-cooled motor shell, which comprises an inner shell and an outer shell, a plurality of mutually parallel annular water grooves are dug on the outer wall of the inner shell along the circumferential direction of the inner shell, and the adjacent water grooves are communicated through connecting grooves; the inner shell is sleeved with the outer shell, the outer shell and the inner shell are welded and fixed, and a water inlet and a water outlet which are communicated with the two water tanks are formed in the outer wall of the outer shell. According to the water-cooled motor shell, the mutually parallel water tanks are used for replacing a traditional spiral water channel, so that the flow direction of cooling liquid is changed, and the temperature of the whole shell is more uniform.

Description

Technical Field

[0001] The utility model belongs to the technical field of motor equipment, and in particular relates to a water-cooled motor housing. Background Art

[0002] A direct-drive motor is a motor that directly drives a load without the need for a reduction gear mechanism. It features low-speed, high-torque, high-precision positioning, simple structure, low mechanical loss, and low noise. High-end precision applications place stringent requirements on the temperature rise of direct-drive motors, requiring a cooling design for the motor housing to achieve effective motor cooling. The conventional water-cooling method involves first machining a spiral water channel on the inner or outer shell of the motor stator. The coolant flows from one end of the water channel to the other, with a single flow direction, resulting in uneven coolant temperature. Furthermore, to improve sealing, a sealing groove must be machined, and then the inner and outer shells are assembled into a single unit using a sealing ring. This method not only requires machining precise sealing ring grooves, which increases the difficulty of machining, but also risks leakage of cooling water due to improper assembly of the sealing ring, resulting in low stability.

[0003] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Utility Model Content

[0004] The purpose of the utility model is to provide a water-cooled motor housing for solving the motor cooling problem.

[0005] In order to achieve the above-mentioned purpose, a specific embodiment of the present invention provides a water-cooled motor housing, comprising an inner shell and an outer shell, wherein the outer wall of the inner shell is provided with a plurality of annular water grooves parallel to each other along its circumference, and adjacent water grooves are connected by connecting grooves; the outer shell is sleeved on the outside of the inner shell and welded to the inner shell, and the outer wall of the outer shell is provided with a water inlet and a water outlet connecting two of the water grooves.

[0006] In one or more embodiments of the present invention, the connection grooves are located on different element lines of the inner shell.

[0007] In one or more embodiments of the present invention, the width of the connecting groove is greater than the width of the water groove.

[0008] In one or more embodiments of the present invention, the water inlet and the water outlet are arranged on the same element line of the shell.

[0009] In one or more embodiments of the present invention, the water-cooled motor housing further includes a water inlet joint installed at the water inlet, and a water outlet joint installed at the water outlet.

[0010] In one or more embodiments of the present invention, the inner shell is provided with a first welding groove at the welding position, and the outer shell is provided with a second welding groove corresponding to the first welding groove.

[0011] In one or more embodiments of the present invention, the first welding groove is provided at the axial end of the inner shell along the circumference of the inner shell, and the second welding groove is provided at the axial end of the outer shell along the circumference of the outer shell.

[0012] In one or more embodiments of the present invention, a base is further provided at one end of the inner shell and the outer shell, the outer shell is fixed to the base by welding, and a third welding groove is provided at the welding position between the outer shell and the base.

[0013] In one or more embodiments of the present invention, the third welding groove is provided along the circumference of the shell at the end portion of the shell in contact with the base.

[0014] In one or more embodiments of the present invention, the inner shell and the outer shell are flush at least at the end surface away from the base.

[0015] Compared with the prior art, the water-cooled motor housing of the present invention uses parallel water grooves to replace the traditional spiral water channels, which changes the flow direction of the coolant and makes the temperature of the entire housing more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of a water-cooled click housing in one embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of a housing in one embodiment of the present invention;

[0019] Figure 3 A schematic diagram of the housing from another angle in one embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the inner shell and the base in one embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the inner shell and the base from another angle in one embodiment of the present invention.

[0022] Description of main reference numerals:

[0023] 100-water-cooled motor housing, 10-inner housing, 11-water trough, 12-connecting groove, 13-first welding groove, 20-outer housing, 21-water inlet, 22-water outlet, 23-water inlet joint, 24-water outlet joint, 25-second welding groove, 26-third welding groove, 30-base. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will be combined with the drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0025] like Figure 1-5 As shown, a water-cooled motor housing 100 in one embodiment of the present invention comprises an inner housing 10 and an outer housing 20. The outer wall of the inner housing 10 is circumferentially provided with a plurality of parallel, annular water grooves 11, with adjacent water grooves 11 connected by connecting grooves 12. The outer housing 20 is sleeved over the inner housing 10 and welded to the inner housing 10. The inner wall of the outer housing 20 is provided with a water inlet 21 and a water outlet 22, each of which is connected to two of the water grooves 11.

[0026] Existing cooling water channels are usually in the form of a spiral, and the coolant flows from one end of the spiral water channel to the other end, with a single flow direction. Therefore, the coolant temperature at the upstream end may be lower than that at the downstream end, resulting in uneven overall temperature of the motor. Long-term use may affect the stability and service life of the motor. In the water-cooled motor housing 100 of the present embodiment, a spiral cooling water channel is not used. Instead, an annular water groove 11 parallel to each other is used, and adjacent water grooves 11 are connected by connecting grooves 12. The coolant flows through the connecting grooves 12 to another water groove 11 and then flows in two directions. Therefore, the arrangement of the water grooves 11 in the present embodiment can change the flow direction of the coolant, and it is no longer a single flow direction, so that the temperature of the entire water-cooled motor housing 100 is more uniform, and the motor can be fully cooled and cooled, thereby improving the stability and service life of the motor.

[0027] In one embodiment, the inner shell 10 is roughly cylindrical, and multiple connecting grooves 12 are located on different lines of the inner shell 10, so that the coolant can flow to other water grooves 11 at different positions, further changing the flow direction of the coolant and making the temperature of the entire water-cooled motor housing 100 more averaged.

[0028] Preferably, the width of the connecting groove 12 (i.e., the distance between the two circumferential ends of the connecting groove 12 along the inner shell 10) is greater than the width of the water groove 11, so as to increase the flow rate of the coolant when it flows to the adjacent water groove 11, thereby ensuring the overall flow rate of the coolant on the inner shell 10 and the overall cooling effect.

[0029] It is easy to imagine that a water inlet connector 23 is installed at the water inlet 21, and a water outlet connector 24 is installed at the water outlet 22 accordingly, so as to more conveniently connect to an external water source and improve usability.

[0030] In one embodiment, the water inlet 21 and the water outlet 22 are disposed on the same line of the housing 20 to facilitate connection to an external water source when the device is mounted on the target device. Of course, the water inlet 21 and the water outlet 22 may also be disposed at different locations on the housing 20, and this embodiment is not limiting.

[0031] Existing water-cooled motor housings also require a sealing groove to be machined, and a sealing ring to be installed within the groove to improve overall airtightness. To ensure airtightness, the sealing groove requires high machining precision and is relatively difficult to machine. Furthermore, improper assembly of the sealing groove and sealing ring can lead to coolant leakage. To address this, the present embodiment machines a first welding groove 13 on the inner housing 10, and a second welding groove 25 corresponding to the first welding groove 13 on the outer housing 20. After the inner housing 10 is inserted into the outer housing 20, a molten pool forms at the junction of the first welding groove 13 and the second welding groove 25, providing a welding fulcrum for the operator, ensuring weld quality and airtightness, and avoiding welding misalignment.

[0032] like Figure 4 As shown, the first weld groove 13 is provided at the axial end of the inner shell 10 and is an annular groove circumferentially provided on the outer wall of the inner shell 10. The second weld groove 25 is also provided at the axial end of the outer shell 20 and is an annular groove circumferentially provided on the inner wall of the outer shell 20. Together with the first weld groove 13, it forms an annular groove surrounding the connection between the inner shell 10 and the outer shell 20. The gap between the two is completely sealed by welding to prevent coolant from overflowing.

[0033] In one embodiment, to improve versatility, the water-cooled motor housing 100 further includes a base 30, which is fixed to one end of the inner shell 10 and the outer shell 20 in the axial direction. The outer shell 20 is also welded and fixed to the base 30. Therefore, a third welding groove 26 is also provided on the outer shell 20, which is provided at the position where the outer shell 20 and the base 30 are connected to ensure the welding degree and stability between the two. Figure 3 As shown, the third welding groove 26 is provided on the outer wall of the end where the housing 20 contacts the base 30 .

[0034] Preferably, to facilitate the subsequent installation of other components, the end surfaces of the inner shell 10 and the outer shell 20 at the end away from the base 30 are kept flush to prevent a large gap from being generated when installing other components.

[0035] Here, the water-cooled motor housing 100 in the present invention is further explained in combination with specific usage scenarios.

[0036] When manufacturing the inner shell 10, the water trough 11, connecting groove 12, and first welding groove 13 are machined. When manufacturing the outer shell 20, the water inlet 21, water outlet 22, second welding groove 25, and third welding groove 26 are machined. When creating the water inlet 21 and water outlet 22, care must be taken to ensure that they correspond to the position of the water trough 11. The outer shell 20 is then placed onto the inner shell 10, and the first welding groove 13 and the second welding groove 25 are aligned before welding. Finally, the welded inner shell 10 and outer shell 20 are placed on the base 30 and secured by welding at the third welding groove 26.

[0037] After welding is completed, the welding position needs to be inspected to ensure the airtightness of the entire water-cooled motor housing 100, and then the end faces of the inner shell 10 and the outer shell 20 away from the base 30 are precision-turned to ensure flatness.

[0038] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0039] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A water-cooled motor housing, characterized in that: include: The inner shell has a plurality of annular water grooves parallel to each other dug on its outer wall along its circumference, and adjacent water grooves are connected through connecting grooves; The outer shell is sleeved on the outer shell and fixed to the inner shell by welding. The outer wall of the outer shell is provided with a water inlet and a water outlet communicating with two of the water troughs.

2. The water-cooled motor housing according to claim 1, characterized in that: The connection grooves are located on different element lines of the inner shell.

3. The water-cooled motor housing according to claim 1, characterized in that: The width of the connecting groove is greater than the width of the water groove.

4. The water-cooled motor housing according to claim 1, characterized in that: The water inlet and the water outlet are arranged on the same element line of the shell.

5. The water-cooled motor housing according to claim 1, characterized in that: It also includes a water inlet joint installed at the water inlet, and a water outlet joint installed at the water outlet.

6. The water-cooled motor housing according to claim 1, characterized in that: The inner shell is provided with a first welding groove at a welding position, and the outer shell is provided with a second welding groove corresponding to the first welding groove.

7. The water-cooled motor housing according to claim 6, characterized in that: The first welding groove is provided at an axial end portion of the inner shell along the circumferential direction of the inner shell, and the second welding groove is provided at an axial end portion of the outer shell along the circumferential direction of the outer shell.

8. The water-cooled motor housing according to claim 7, characterized in that: It also includes a base arranged at one end of the inner shell and the outer shell, the outer shell and the base are welded and fixed, and a third welding groove is provided on the outer shell at the welding position with the base.

9. The water-cooled motor housing according to claim 8, characterized in that: The third welding groove is arranged along the circumference of the shell at the end portion of the shell that contacts the base.

10. The water-cooled motor housing according to claim 8, characterized in that: The inner shell and the outer shell are flush at least at the end surface away from the base.

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