Liquid-cooled casing and liquid-cooled motor

Abstract

The utility model relates to the field of motor heat dissipation, in particular to a liquid-cooled casing and a liquid-cooled motor. The liquid-cooled casing comprises a first cylinder, a second cylinder and a liquid-cooled casing, the second barrel is arranged on the outer side of the first barrel in a sleeving manner; the straight-through flow channel is formed between the wall surfaces of the first barrel and the second barrel and extends to the two ends of the first barrel in the axial direction of the first barrel; and the spiral flow channel is formed between the wall surfaces of the first barrel and the second barrel, spirally surrounds in the axial direction of the first barrel and is communicated with the straight-through flow channel. The liquid-cooled motor adopts the liquid-cooled casing. Through the combination of the straight-through flow channel and the spiral flow channel, the cooling liquid generates multi-strand shunting and mutual stirring when passing through, heat accumulation on a spiral flow path is avoided while the cooling liquid fully exchanges heat, the problem that heat exchange of the cooling liquid in the liquid cooling machine shell is not uniform is solved, and the heat exchange efficiency of the cooling liquid in the liquid cooling machine shell is improved. And the effect of improving the heat dissipation uniformity and the heat dissipation capability of the casing is achieved.

Description

Technical Field

[0001] The present application belongs to the field of motor heat dissipation, and specifically relates to a liquid-cooled casing and a liquid-cooled motor. Background Art

[0002] There are generally two ways to dissipate heat from the motor housing: air cooling and liquid cooling. Air cooling mainly uses an axial fan installed at the end of the motor shaft to drive the air outside the motor to flow, achieve heat exchange between the air and the motor housing, and thus reduce the temperature of the motor housing. When the ambient temperature is high, the temperature difference between the air and the motor housing is small, and the air cooling effect is poor, which is not conducive to the normal operation of the motor. Liquid cooling uses the circulation of the coolant. When the coolant passes through the housing flow channel, it completes efficient heat exchange with the motor housing, achieving better housing heat dissipation effect.

[0003] Patent CN209119985U-Liquid-cooled motor, discloses a liquid-cooled heat dissipation structure. Among them, the casing includes a main shell and a sleeve, the sleeve is sleeved outside the main shell in an interference fit manner, and the first coolant channel is composed of a groove on the outer periphery of the main shell. The first coolant channel is distributed in a spiral shape on the casing, and the axis of the spiral is the same as the axis of the casing. The above-mentioned first coolant channel increases the flow channel length of the coolant in a spiral form, thereby improving the heat exchange efficiency, but at the same time, heat is also easy to accumulate in the length direction of the flow channel, resulting in uneven heat exchange of the coolant, resulting in good heat dissipation at the end close to the liquid inlet and poor heat dissipation at the end away from the liquid inlet, and the heat dissipation effect needs to be further improved. Utility Model Content

[0004] The purpose of the present application is to provide a liquid-cooled casing and a liquid-cooled motor, which are used to solve the problem of uneven heat exchange of the coolant in the liquid-cooled casing, so as to achieve the effect of improving the heat dissipation uniformity and heat dissipation capacity of the casing.

[0005] In order to achieve the above objectives, the present application provides a liquid cooling casing, comprising:

[0006] A first cylinder having a cavity disposed therein;

[0007] A second cylinder, sleeved on the outer side of the first cylinder;

[0008] A straight flow channel is formed between the wall surfaces of the first cylinder and the second cylinder, and extends along the axial direction of the first cylinder to both ends of the first cylinder;

[0009] The spiral flow channel is formed between the wall surfaces of the first cylinder and the second cylinder, spirally surrounds along the axial direction of the first cylinder and is communicated with the straight flow channel.

[0010] In some embodiments, the first cylinder includes a first middle portion and a first end portion along its axial direction, and the second cylinder includes a second middle portion and a second end portion along its axial direction; the straight flow channel and the spiral flow channel are arranged between the wall surface of the first middle portion and the second middle portion; and the wall surface of the first end portion and the wall surface of the second end portion are sealed and connected.

[0011] In some embodiments, a plurality of first ribs are arranged in parallel on the outer wall of the first middle portion, the first ribs extend along the axial direction of the first middle portion to the first end portion, and the gaps between the first ribs form the straight-through flow channel.

[0012] In some embodiments, the outer wall of the first middle portion is further provided with a plurality of second ribs, the second ribs are spirally wound around the top of the first ribs along the axial direction of the first middle portion, and the gaps between the second ribs form the spiral flow channel.

[0013] In some embodiments, the top of the second rib is flush with the outer wall side of the first end portion, and the top of the second rib is in contact with the inner wall of the second middle portion.

[0014] In some embodiments, a sealing groove and a sealing ring are provided on the outer wall side of the first end, and the sealing ring is sleeved on the sealing groove, and the sealing ring axially seals the outer wall side of the first end and the inner wall side of the second end.

[0015] In some embodiments, a liquid inlet or a liquid outlet is disposed on an outer wall end surface of the first end portion, and the liquid inlet, the liquid outlet, the straight flow channel and the spiral flow channel are interconnected.

[0016] In some embodiments, both ends of the first cylinder and the second cylinder are flush, and a threaded fastener is disposed between an outer wall of the first end and an inner wall of the second end.

[0017] In some embodiments, the second end is provided with a fixing seat, and the fixing seat includes a groove and a connection hole for matching the installation position.

[0018] A second aspect of the present application provides a liquid-cooled motor, which adopts the above-mentioned liquid-cooled casing.

[0019] Compared with the prior art, the beneficial effects of this application are:

[0020] The present application uses a combination of straight flow channels and spiral flow channels to produce multiple branch flows and mutual stirring when the coolant passes through, so that the coolant can fully exchange heat while avoiding heat accumulation in the spiral flow path, thereby solving the problem of uneven heat exchange of the coolant in the liquid-cooled casing and achieving the effect of improving the uniformity and heat dissipation capacity of the casing.

[0021] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without creative work. In the drawings:

[0023] Figure 1 This is a structural diagram of the first cylinder of a specific implementation method of the present application.

[0024] Figure 2 This is a transverse cross-sectional view of the first cylinder according to a specific implementation method of the present application.

[0025] Figure 3 This is a structural diagram of the second cylinder according to a specific implementation method of the present application.

[0026] Figure 4 This is an enlarged cross-sectional view of the end portion of the liquid cooling casing according to a specific embodiment of the present application.

[0027] Figure 5 This is an end view of a liquid cooling casing according to a specific embodiment of the present application.

[0028] Figure 6 It is a cross-sectional view of a liquid-cooled motor according to a specific embodiment of the present application.

[0029] Figure 7 It is a schematic diagram of the air cooling configuration state of the liquid-cooled motor according to a specific embodiment of the present application.

[0030] Explanation of the accompanying drawings: first cylinder 1, first middle part 11, first rib 111, second rib 112, first end part 12, sealing groove 121, sealing ring 122, liquid inlet 123, liquid outlet 124, threaded fastener 125, second cylinder 2, second middle part 21, second end part 22, fixing seat 221, straight flow channel 3, spiral flow channel 4, stator 5, rotor 6, end cover 7. DETAILED DESCRIPTION

[0031] The specific implementation of the present application is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present application, and is not used to limit the present application.

[0032] like Figures 1 to 5 As shown, a liquid cooling housing comprises:

[0033] The first cylinder 1 has a cavity inside;

[0034] The second cylinder 2 is sleeved on the outer side of the first cylinder 1;

[0035] The straight flow channel 3 is formed between the walls of the first cylinder 1 and the second cylinder 2, and extends along the axial direction of the first cylinder 1 to both ends of the first cylinder 1;

[0036] The spiral flow channel 4 is formed between the walls of the first cylinder 1 and the second cylinder 2 , spirally surrounds along the axial direction of the first cylinder 1 and is interconnected with the straight flow channel 3 .

[0037] In the present application, the cavity of the first barrel 1 is used to accommodate the working parts, and the heat generated by the working parts is transferred to the first barrel 1. The circulating coolant flows in from one end of the first barrel 1, exchanges heat with the first barrel 1 through the straight channel 3 and the spiral channel 4, and finally flows out from the other end of the first barrel 1. Among them, the straight channel 3 quickly guides part of the coolant from one end of the first barrel 1 to the other end, which can reduce the accumulation of heat during the heat exchange process; and the spiral channel 4 increases the flow channel length of part of the coolant, which can extend the heat exchange time of the coolant. Since the straight channel 3 and the spiral channel 4 are interconnected, the coolant in the straight channel 3 and the coolant in the spiral channel 4 can further generate mutual stirring, forming secondary heat exchange and balancing the heat distribution. In addition, mutual stirring can also improve the fluidity of the coolant, reduce the deposition of impurities carried by the coolant in the channel, and reduce the probability of channel blockage. The present application uses a combination of a straight flow channel 3 and a spiral flow channel 4 to allow the coolant to generate multiple branches and stir each other when passing through, so that the coolant can fully exchange heat while avoiding heat accumulation in the spiral flow path, thereby solving the problem of uneven heat exchange of the coolant in the liquid-cooled casing and achieving the effect of improving the heat dissipation uniformity and heat dissipation capacity of the casing.

[0038] Specifically, the first cylinder 1 includes a first middle portion 11 and a first end portion 12 along its axial direction, and the second cylinder 2 includes a second middle portion 21 and a second end portion 22 along its axial direction; a straight-through flow channel 3 and a spiral flow channel 4 are arranged between the walls of the first middle portion 11 and the second middle portion 21; and the walls of the first end portion 12 and the second end portion 22 are sealed and connected. The two first end portions 12 are respectively located at the two ends of the first middle portion 11, and the two second end portions 22 are respectively located at the two ends of the second middle portion 21. The ends of the first cylinder 1 and the second cylinder 2 seal the straight-through flow channel 3 and the spiral flow channel 4 inside them, so that the liquid-cooling housing can be used as a whole and flexibly applied to different working parts, reducing the structural coupling of the device.

[0039] In some embodiments, the first barrel 1 and the second barrel 2 are both straight barrels with openings at both ends, and the caliber of the second barrel 2 is larger than the caliber of the first barrel 1. The outer contour of the first middle portion 11 is smaller than the outer contour of the first end portion 12, and the inner contour of the second middle portion 21 is equal to the inner contour of the second end portion 22. The second barrel 2 is sleeved on the outer side of the first barrel 1 from one end of the first barrel 1, and the second end portion 22 is axially sealed with the first end portion 12.

[0040] Specifically, a plurality of first ribs 111 are arranged in parallel on the outer wall of the first middle portion 11, and the first ribs 111 extend to the first end portion 12 along the axial direction of the first middle portion 11, and the gaps between the first ribs 111 form a straight flow channel 3. On one hand, the side walls of the first ribs 111 and the outer wall of the first middle portion 11 form a straight flow channel 3, and on the other hand, the side walls of the first ribs 111 also increase the heat exchange area with the coolant, further improving the heat dissipation capacity of the liquid-cooled housing.

[0041] Furthermore, the outer wall of the first middle portion 11 is also provided with a plurality of second ribs 112, which are spirally wound around the top of the first ribs 111 along the axial direction of the first middle portion 11, and the gaps between the second ribs 112 form a spiral flow channel 4. The bottom of the spiral flow channel 4 is connected to the top of the straight flow channel 3.

[0042] Furthermore, the top of the second rib 112 is flush with the outer wall side of the first end portion 12, and the top of the second rib 112 is in contact with the inner wall of the second middle portion 21. The side wall of the second rib 112 and the inner wall of the second middle portion 21 form a spiral flow channel 4. The height restriction of the second rib 112 enables the second cylinder 2 to be sleeved on the outer side of the first cylinder 1 from one end of the first cylinder 1, simplifying the assembly process of the first cylinder 1 and the second cylinder 2.

[0043] In some embodiments, a plurality of first ribs 111 are distributed around the outer wall of the first middle portion 11. The first cylinder 1 can be processed by using an aluminum profile tube with multiple ribs on the surface, and the gaps between the ribs directly form the straight-through flow channel 3, eliminating the need for processing the first ribs 111. A plurality of second ribs 112 are welded to the top of the first rib 111 and the outer wall of the first middle portion 11, respectively. Compared with the form of slotting the first middle portion 11 or the second middle portion 21, the straight-through flow channel 3 and the spiral flow channel 4 are formed by the first ribs 111 and the second ribs 112, and the processing technology is simple and the production cost is low.

[0044] Specifically, a sealing groove 121 and a sealing ring 122 are provided on the outer wall side of the first end 12, and the sealing ring 122 is sleeved on the sealing groove 121. The sealing ring 122 axially seals the outer wall side of the first end 12 and the inner wall side of the second end 22. The first cylinder 1 and the second cylinder 2 are axially sealed at both ends using the sealing ring 122, and the sealing is simple and reliable. The sealing ring 122 isolates the straight flow channel 3 and the spiral flow channel 4 from the outside to prevent the coolant leakage from affecting the working parts in the liquid cooling housing.

[0045] In some embodiments, two annular sealing grooves 121 are provided on the outer wall side of the first end portion 12. The sealing rings 122 are O-rings, which are respectively sleeved on the sealing grooves 121. Four sealing grooves 121 and four sealing rings 122 are provided at both ends of the first cylinder 1.

[0046] Specifically, the outer wall end surface of the first end portion 12 is provided with a liquid inlet 123 or a liquid outlet 124, and the liquid inlet 123, the liquid outlet 124, the straight flow channel 3 and the spiral flow channel 4 are interconnected. The coolant is introduced from the liquid inlet 123 on the first end portion 12 at one end, and after heat exchange in the straight flow channel 3 and the spiral flow channel 4, is discharged from the liquid outlet 124 on the first end portion 12 at the other end.

[0047] Specifically, the first cylinder 1 and the second cylinder 2 are flush at both ends, and a threaded fastener 125 is provided between the outer wall of the first end 12 and the inner wall of the second end 22. The two end surfaces of the first cylinder 1 and the second cylinder 2 are fixed by the threaded fastener 125, and the structure is simple and reliable.

[0048] In some embodiments, after the second cylinder 2 is sleeved on the outside of the first cylinder 1 and the ends are aligned, a threaded hole is opened at the joint between the two, that is, the outer wall of the first end 12 and the inner wall of the second end 22 each have half a threaded hole, and finally a set screw is used as a threaded fastener 125 to fix the first cylinder 1 and the second cylinder 2. Multiple threaded holes and set screws are distributed around the joint.

[0049] Specifically, the second end portion 22 is provided with a fixing seat 221 , and the fixing seat 221 includes a groove and a connection hole for matching the installation position. The fixing seat 221 can be integrally formed with the second end portion 22 .

[0050] like Figure 6 , Figure 7 As shown, a liquid-cooled motor comprises a stator 5, a rotor 6, an end cover 7 and the above-mentioned liquid-cooled housing. The stator 5 is fixed inside the liquid-cooled housing; the rotor 6 is located inside the stator 5, and its two ends are mounted on the end cover 7; the end cover 7 is fixed at both ends of the opening of the liquid-cooled housing.

[0051] In some embodiments, since the first cylinder 1 and the second cylinder 2 are assembled in a sleeve, they can be flexibly combined to form a housing that meets different working conditions and requirements. For example, when the second cylinder 2 is not assembled, the first cylinder 1 can rely on the first ribs 111 and the second ribs 112 on its outer wall to increase the heat dissipation area and form air cooling.

[0052] In the description of the present application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0053] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0055] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A liquid cooling casing, characterized in that: include: A first cylinder (1) having a cavity therein; A second cylinder (2) is sleeved on the outer side of the first cylinder (1); A straight flow channel (3) is formed between the wall surfaces of the first cylinder (1) and the second cylinder (2), and extends along the axial direction of the first cylinder (1) to both ends of the first cylinder (1); The spiral flow channel (4) is formed between the wall surfaces of the first cylinder (1) and the second cylinder (2), spirally surrounds the axial direction of the first cylinder (1) and is interconnected with the straight flow channel (3).

2. The liquid cooling housing according to claim 1, characterized in that: The first cylinder (1) comprises a first middle portion (11) and a first end portion (12) along its axial direction, and the second cylinder (2) comprises a second middle portion (21) and a second end portion (22) along its axial direction; the straight flow channel (3) and the spiral flow channel (4) are arranged between the wall surfaces of the first middle portion (11) and the second middle portion (21); and the wall surfaces of the first end portion (12) and the second end portion (22) are sealed and connected.

3. The liquid cooling housing according to claim 2, characterized in that: A plurality of first ribs (111) are arranged in parallel on the outer wall of the first middle portion (11), the first ribs (111) extending along the axial direction of the first middle portion (11) to the first end portion (12), and the gaps between the first ribs (111) form the straight flow channel (3).

4. The liquid cooling housing according to claim 3, characterized in that: The outer wall of the first middle portion (11) is further provided with a plurality of second ribs (112), the second ribs (112) being spirally wound around the top of the first ribs (111) along the axial direction of the first middle portion (11), and the gaps between the second ribs (112) forming the spiral flow channel (4).

5. The liquid cooling housing according to claim 4, characterized in that: The top of the second rib (112) is flush with the outer wall side of the first end portion (12), and the top of the second rib (112) is in contact with the inner wall of the second middle portion (21).

6. The liquid cooling housing according to claim 2, characterized in that: The outer wall side surface of the first end portion (12) is provided with a sealing groove (121) and a sealing ring (122), and the sealing ring (122) is sleeved on the sealing groove (121), and the sealing ring (122) axially seals the outer wall side surface of the first end portion (12) and the inner wall side surface of the second end portion (22).

7. The liquid cooling housing according to claim 2, characterized in that: The outer wall end surface of the first end portion (12) is provided with a liquid inlet (123) or a liquid outlet (124), and the liquid inlet (123), the liquid outlet (124), the straight flow channel (3) and the spiral flow channel (4) are interconnected.

8. The liquid cooling housing according to claim 2, characterized in that: The first cylinder (1) and the second cylinder (2) are flush at both ends, and a threaded fastener (125) is provided between the outer wall of the first end (12) and the inner wall of the second end (22).

9. The liquid cooling housing according to claim 2, characterized in that: The second end portion (22) is provided with a fixing seat (221), and the fixing seat (221) comprises a groove and a connection hole for matching the installation position.

10. A liquid-cooled motor, characterized in that: A liquid cooling casing as claimed in any one of claims 1 to 9 is used.

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