A motor housing

Abstract

The present invention discloses a motor housing, which belongs to the field of motor technology, and comprises a housing, wherein a front end cover is arranged at the front end of the housing, and a rear end cover is arranged at the rear end; a plurality of cooling shells are fixed on the outer wall of the housing, and each cooling shell and the outer wall of the housing enclose a cooling channel, a disturbance plate slides in the cooling channel, and a liquid injection assembly is arranged at the liquid inlet end of the cooling channel; the present invention constructs a plurality of cooling channels by evenly arranging a plurality of cooling shells outside the housing, and when the coolant is injected into the cooling channel through the liquid injection assembly, it not only directly takes away the heat of the housing, but also utilizes the stamping effect on the disturbance plate to cause the disturbance plate to reciprocate in the channel, forming a more complex and efficient heat exchange mode. The contact area and contact time between the coolant and the housing surface are effectively increased, thereby greatly improving the heat conduction efficiency, reducing the temperature of the motor during operation, ensuring the long-term stable operation and performance of the motor, and extending the service life.

Description

Technical Field

[0001] The invention relates to a motor shell and belongs to the technical field of motors. Background Art

[0002] During the operation of the motor of a traditional electric tricycle, the heat generated when electrical energy is converted into mechanical energy cannot be effectively dissipated, which often causes the motor temperature to rise, thereby affecting the motor's operating efficiency and reliability, and even shortening the motor's service life. Existing motor cooling methods mostly use natural air cooling or simple liquid cooling systems, but these methods often have limitations such as low cooling efficiency, uneven cooling, and difficulty in coping with extreme working conditions. Natural air cooling depends on the external ambient temperature and wind speed, and the cooling effect is greatly affected by the environment; while a simple liquid cooling system may cause insufficient heat exchange due to the single coolant flow path and limited contact area, and cannot effectively meet the needs of efficient and stable operation of the motor. Summary of the invention

[0003] The object of the present invention is to provide a motor housing to solve the problems raised in the above background technology.

[0004] In order to achieve the above object, the present invention adopts the following technical solution: a motor housing, comprising:

[0005] A housing, wherein a front end cover is disposed at the front end of the housing, and a rear end cover is disposed at the rear end of the housing;

[0006] A plurality of cooling shells with U-shaped cross sections are fixed on the outer wall of the shell in an inverted manner, each cooling shell and the outer wall of the shell form a cooling channel, one end of the cooling channel is a liquid inlet end, and the other end is a liquid outlet end;

[0007] A disturbance plate, wherein the disturbance plate slides in the cooling channel, and gaps for coolant flow are arranged between two sides of the disturbance plate and the inner wall of the cooling channel;

[0008] Wherein, a liquid injection assembly for injecting coolant into the cooling channel is provided at the liquid inlet end of the cooling channel, and when the liquid injection assembly injects coolant into the cooling channel, the coolant injected into the cooling channel can stamp the disturbance plate;

[0009] At the liquid outlet end of the cooling channel, an elastic member for sliding and resetting the disturbance plate is arranged between the front end cover and the end of the disturbance plate.

[0010] Preferably, the liquid injection assembly comprises:

[0011] An injection head, the injection head is located at the liquid inlet end of the cooling channel and the injection head is fixed on the side wall of the rear end cover;

[0012] A liquid storage tank, used for storing the coolant to be injected into the cooling channel, wherein the liquid storage tank is provided inside the injection head;

[0013] The injection hole is opened on the side wall of the injection head, and the injection hole is used to spray the coolant in the liquid storage tank into the cooling channel. The coolant water column sprayed from the injection hole is directed toward the end of the disturbance plate.

[0014] Preferably, the injection holes are distributed in two rows on the injection head, and the water columns injected by the two rows of injection holes are distributed in a V shape;

[0015] A groove is provided at the end of the disturbance plate, the inner wall of the groove is in an arc shape, and one end of the injection head close to the disturbance plate is adapted to the groove;

[0016] When the spray hole sprays a coolant water column, the sprayed water column impacts the inner wall of the groove.

[0017] Preferably, a V-shaped liquid guiding wall is provided inside the liquid storage tank.

[0018] Preferably, a row of first guide plates are respectively arranged on the inner walls of both sides of the cooling shell, and each first guide plate is inclined toward the liquid outlet end;

[0019] A row of second guide plates are respectively arranged on both sides of the disturbance plate, and each second guide plate is inclined toward the liquid inlet end;

[0020] The end of the first guide plate close to the spoiler plate is curved, and the end of the second guide plate away from the spoiler plate is also curved, and the curvature of the first guide plate is opposite to the curvature of the corresponding second guide plate.

[0021] Preferably, a water inlet annular groove is provided inside the rear end cover, the inner cavity of each liquid storage groove is communicated with the water inlet annular groove, and a liquid inlet pipe for injecting coolant into the water inlet annular groove is provided on the side wall of the rear end cover;

[0022] A water outlet annular groove is arranged inside the front end cover, the liquid outlet end of each cooling channel is connected to the water outlet annular groove, and a liquid outlet pipe for leading the coolant in the water outlet annular groove is arranged on the side wall of the front end cover.

[0023] Preferably, the housing, the front end cover and the rear end cover are connected and fixed by a plurality of bolts.

[0024] Preferably, a base is arranged below the shell.

[0025] Preferably, heat dissipation fins are provided on the side walls of the cooling shell.

[0026] Compared with existing technologies:

[0027] The present invention constructs multiple cooling channels by evenly arranging multiple cooling shells on the outside of the shell. When the coolant is injected into the cooling channel through the injection assembly, it not only directly takes away the heat of the shell, but also uses the stamping effect on the disturbance plate to cause the disturbance plate to reciprocate in the channel. This process can disrupt the flow state of the coolant and form a more complex and efficient heat exchange mode. The contact area and contact time between the coolant and the shell surface are effectively increased, thereby greatly improving the heat conduction efficiency, reducing the temperature of the motor during operation, ensuring the long-term stable operation and performance of the motor, and extending the service life. In addition, the elastic member ensures that the disturbance plate can automatically reset after the coolant is stamped, maintaining the continuous disturbance effect and stability of the disturbance plate.

[0028] The present invention achieves further optimization and complication of the coolant flow path by adding a first guide plate and a second guide plate that are relatively inclined and curved on both sides of the cooling shell and the disturbance plate. This design causes the coolant to form multiple eddy currents and swirl areas during the flow process, which not only significantly increases the contact area between the coolant and the cooling shell and the disturbance plate, but also prolongs the contact time, thereby greatly improving the heat exchange efficiency. In addition, as the disturbance plate reciprocates under the coolant stamping, its relative position with the second guide plate changes continuously, further aggravating the disturbance of the coolant in the cooling channel, making the coolant flow path more dynamic and changeable, and further enhancing the heat conduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the present invention.

[0030] Figure 2 It is an exploded view of the overall structure of the present invention.

[0031] Figure 3 It is a cross-sectional view of the cooling shell and the disturbance plate of the present invention.

[0032] Figure 4 It is a schematic diagram of the structure of the disturbance plate, groove and injection head of the present invention.

[0033] Figure 5 This is a state diagram of the injection head of the present invention when it is against the groove.

[0034] Figure 6 This is a state diagram of the water jet from the jet hole of the present invention when it impacts the inner wall of the groove.

[0035] Figure 7 This is a state diagram of the water jet from the jet hole of the present invention when it is separated from the inner wall of the groove.

[0036] Figure 8 It is a schematic diagram of the structure of the shell and the base of the present invention.

[0037] Fig. 9It is a cross-sectional view of the front end cover and the water outlet ring groove of the present invention.

[0038] Fig.10 It is a cross-sectional view of the rear end cover and the water inlet ring groove of the present invention.

[0039] In the figure:

[0040] 1. Shell;

[0041] 101, front end cover, 1011, water outlet ring groove, 102, rear end cover, 1021, water inlet ring groove;

[0042] 2. Cooling shell, 201. First guide plate;

[0043] 3. Disturbing plate, 301, groove, 302, second guide plate;

[0044] 4. Elastic parts;

[0045] 5. Liquid injection assembly, 501. injection head, 502. liquid storage tank, 503. injection hole, 504. liquid guide wall;

[0046] 6. Liquid inlet pipe, 7. Liquid outlet pipe;

[0047] 8. Bolts;

[0048] 9. Base;

[0049] 10. Heat dissipation fins. DETAILED DESCRIPTION

[0050] The present invention is described below with specific embodiments, but they are not intended to be limiting of the invention.

[0051] Embodiment 1

[0052] like Figure 1-Figure 10 As shown, in this embodiment, a motor housing is provided, including a housing 1, a front end cover 101 is provided at the front end of the housing 1, and a rear end cover 102 is provided at the rear end of the housing 1; the housing 1, the front end cover 101 and the rear end cover 102 are connected and fixed by a plurality of bolts 8, as shown in FIG. Figure 2 As shown, a through hole for the bolt 8 to pass through is provided between the front cover 101 and the rear cover 102. When the front cover 101 and the rear cover 102 are respectively installed at the front and rear ends of the housing 1, the threaded end of the bolt 8 is passed through the inner cavity of the housing 1 and the through hole of the rear cover 102 in sequence from the through hole of the front cover 101 and extends out, and then a nut is screwed on the threaded end of the bolt 8. At this time, the front cover 101 and the rear cover 102 can be fixed on the housing 1, so that the housing 1, the front cover 101 and the rear cover 102 are connected and fixed. A base 9 is also provided below the housing 1, as shown in FIG. Figure 8As shown, two bases 9 are provided, and the two bases 9 are symmetrically arranged on both sides below the shell 1, and the bottom surface of the base 9 is lower than the bottom side wall of the lowest cooling shell 2 to avoid the lowest cooling shell 2 of the shell 1 interfering with the installation of the base 9.

[0053] A plurality of cooling shells 2 are fixed on the outer wall of the shell 1. The plurality of cooling shells 2 are evenly distributed around the axis of the shell 1. The plurality of cooling shells 2 have a U-shaped cross section. The cooling shells 2 are fixed in an inverted manner. Each cooling shell 2 and the outer wall of the shell 1 form a cooling channel. One end of the cooling channel is a liquid inlet end, and the other end is a liquid outlet end. A disturbance plate 3 slides in the cooling channel. A gap for the flow of coolant is set between the two sides of the disturbance plate 3 and the inner wall of the cooling channel.

[0054] Among them, the liquid inlet end of the cooling channel is provided with an injection component 5 for injecting coolant into the cooling channel. When the injection component 5 injects coolant into the cooling channel, the coolant injected into the cooling channel can stamp the disturbance plate 3; at the liquid outlet end of the cooling channel, an elastic member 4 for sliding and resetting the disturbance plate 3 is provided between the front end cover 101 and the end of the disturbance plate 3.

[0055] When the motor is running, it needs to be effectively cooled to prevent overheating. At this time, the coolant is injected into the liquid inlet end of the cooling channel through the liquid injection component 5. The coolant can be water, oil or other liquids suitable for motor cooling. The coolant enters the cooling channel at a certain pressure. During this process, the coolant directly punches the disturbance plate 3 in the cooling channel. Under the punching action of the coolant, the disturbance plate 3 will move along the length of the cooling channel. Due to the gap between the two sides of the disturbance plate and the inner wall of the cooling channel, this movement will drive the coolant to form a more complex flow pattern in the cooling channel; it can increase the contact area and time between the coolant and the outer wall of the shell 1, thereby improving the heat exchange efficiency and making the heat generated by the motor more effectively carried away by the coolant.

[0056] The elastic member 4 can be a spring, an elastic sheet, etc., which is connected between the end of the disturbance plate 3 and the liquid outlet end of the cooling channel. When the coolant presses the disturbance plate 3, the elastic member 4 is compressed, and the elastic force of the elastic member 4 causes the disturbance plate 3 to slide and reset toward the liquid inlet end of the cooling channel.

[0057] like Fig. 9 and Fig.10 As shown, in order to inject coolant into the cooling channel and to guide the coolant out of the cooling channel, a water inlet annular groove 1021 is provided inside the rear end cover 102, the inner cavity of each liquid storage groove 502 is communicated with the water inlet annular groove 1021, and a liquid inlet pipe 6 for injecting coolant into the water inlet annular groove 1021 is provided on the side wall of the rear end cover 102;

[0058] A water outlet groove 1011 is provided inside the front end cover 101 , and the liquid outlet end of each cooling channel is connected to the water outlet groove 1011 . A liquid outlet pipe 7 for discharging the coolant in the water outlet groove 1011 is provided on the side wall of the front end cover 101 .

[0059] An external water pump is provided on the liquid inlet pipe 6. When the external water pump is started, the coolant is pumped from the coolant source (such as a water tank) through the liquid inlet pipe 6 into the water inlet annular groove 1021 of the rear end cover 102. The water inlet annular groove 1021 serves as the center of coolant distribution. The coolant therein flows into the inner cavity of each liquid storage tank 502 through a channel or an orifice. The coolant in the liquid storage tank 502 then flows into the cooling channel. After sufficient heat exchange in the cooling channel, the coolant with increased temperature flows from the inner cavity of the liquid storage tank 502 into the water outlet annular groove 1011 of the front end cover 101. The water outlet annular groove 1011 also serves as the center of coolant collection. The coolant therein is led out to the external cooling system (such as a radiator) through the liquid outlet pipe 7.

[0060] In the external cooling system, after the coolant undergoes heat dissipation treatment (such as heat exchange with air through a radiator), the temperature is reduced, and then the coolant is pumped back to the water inlet ring groove 1021 by the external water pump again to start a new round of circulation.

[0061] Embodiment 2

[0062] like Figure 3-Figure 7 As shown, on the basis of the first embodiment, in order to make the disturbance plate 3 slide back and forth in the cooling channel, the injection assembly 5 includes an injection head 501, which is located at the liquid inlet end of the cooling channel, and the injection head 501 is fixed on the side wall of the rear end cover 102, serving as the starting point of the coolant injection; a liquid storage tank 502 is provided inside the injection head 501, and the liquid storage tank 502 is used to store the coolant to be injected into the cooling channel to ensure continuous supply; a spray hole 503 is provided on the side wall of the injection head 501, and the spray hole 503 is used to spray the coolant in the liquid storage tank 502 into the cooling channel, and the coolant water column sprayed from the spray hole 503 is toward the end of the disturbance plate 3.

[0063] The injection holes 503 are distributed in two rows on the injection head 501, and the water columns sprayed by the two rows of injection holes 503 are distributed in a V shape; a groove 301 is provided at the end of the disturbance plate 3, and the inner wall of the groove 301 is in an arc shape, and one end of the injection head 501 close to the disturbance plate 3 is adapted to the groove 301; when the injection holes 503 spray coolant water columns, the sprayed water columns impact the inner wall of the groove 301.

[0064] Combination Figure 3-Figure 5 As shown, under the pressure of the elastic member 4, the disturbance plate 3 moves toward the injection head 501, and the groove 301 of the disturbance plate 3 abuts against the end plate of the injection head 501. At this time, the injection hole 503 is inside the groove 301;

[0065] Combination Figure 3 , Figure 4 and Figure 6 As shown, when the spray hole 503 sprays the coolant in the liquid storage tank 502 outward, the water column sprayed by the spray hole 503 presses the inner wall of the groove 301. At this time, the sprayed water column forces the disturbance plate 3 to compress the elastic member 4 and cause displacement. Specifically, as shown in FIG. Figure 6 As shown, when the water column is sprayed to stamp the inner wall of the groove 301, the water column sprayed on the inner wall of the groove 301 is guided to the middle of the groove 301 by the arc-shaped inner wall of the groove 301, and the coolant gathered in the middle of the groove 301 can further push the disturbance plate 3;

[0066] Combination Figure 3 , Figure 4 and Figure 7 As shown, the water column sprayed from the injection hole 503 punches the inner wall of the groove 301, and when the disturbance plate 3 compresses the elastic member 4 and displaces, the punching position of the groove 301 by the sprayed water column gradually edges, and finally, the sprayed water column will separate from the inside of the groove 301. At the moment of separation, the elastic member 4 presses the disturbance plate 3 to reset, and at this time, the sprayed water column will punch the inner wall of the groove 301 again, and this process is repeated. The disturbance plate 3 will slide back and forth under the action of the elastic member 4 and the water column sprayed from the injection hole 503.

[0067] In the above description, the reciprocating sliding is performed by the elastic member 4 and the spray hole 503 under the action of the water column, and the condition is that the water pressure of the sprayed water column is sufficient to compress the elastic member 4 to slide to the state as shown in FIG. Figure 7 The state shown is the state where the sprayed water column is separated from the groove 301.

[0068] A V-shaped liquid guiding wall 504 is provided inside the liquid storage groove 502 , and the V-shaped liquid guiding wall 504 can guide the coolant in the liquid storage groove 502 to flow along a specific path, so that the coolant naturally flows along the liquid guiding wall 504 to the location of the injection hole 503 .

[0069] Embodiment 3

[0070] like Figure 3-Figure 7As shown, on the basis of the second embodiment, in order to increase the contact area and contact time between the coolant and the cooling shell 2 and the disturbance plate 3 and improve the heat exchange efficiency, a row of first guide plates 201 are respectively arranged on the inner walls on both sides of the cooling shell 2, and each first guide plate 201 is inclined toward the liquid outlet end; a row of second guide plates 302 are respectively arranged on both sides of the disturbance plate 3, and each second guide plate 302 is inclined toward the liquid inlet end; wherein, the end of the first guide plate 201 close to the disturbance plate 3 is curved in an arc shape, and the end of the second guide plate 302 away from the disturbance plate 3 is also curved in an arc shape, and the arc bending direction of the first guide plate 201 is opposite to the arc bending direction of the corresponding second guide plate 302.

[0071] The arc-shaped bend of the first guide plate 201 is opposite to the arc-shaped bend of the corresponding second guide plate 302. This relative arrangement helps to form a plurality of more complex flow areas in the gap for the coolant to flow, further enhancing the disturbance effect of the coolant.

[0072] The flow process in a more complex flow area is as follows: the coolant flows from the liquid inlet end to the liquid outlet end in the gap, and the coolant flows from between the first guide plate 201 and the disturbance plate 3 to the intersection of the disturbance plate 3 and the second guide plate 302, and then flows along the second guide plate 302. After that, the coolant reaches the position where the arc bend at the end of the first guide plate 201 is opposite to the arc bend at the end of the second guide plate 302. At this position, the coolant generates a vortex, and then the coolant flows along the first guide plate 201 to the connection between the inner wall of the cooling shell 2 and the first guide plate 201, and then flows from between the inner wall of the cooling shell 2 and the second guide plate 302 to the next flow area, causing the coolant to flow out of the cooling channel from the liquid outlet.

[0073] In the above-mentioned coolant flow process, by arranging guide plates on the cooling shell 2 and the disruptor plate 3, their inclination angles and arc-shaped bending directions can guide the coolant to form a more complex flow pattern in the cooling channel. This flow pattern can increase the contact area and contact time between the coolant and the cooling shell 2 and the disruptor plate 3, thereby improving the heat exchange efficiency.

[0074] In addition, while the coolant flows along the above-mentioned flow path, since the disturbance plate 3 and the second guide plate 302 are still moving back and forth in the cooling channel, the flow path of the coolant in the cooling channel is constantly changed, and the coolant flowing in the cooling channel is disturbed, which can further increase the contact area and contact time between the coolant and the cooling shell 2 and the disturbance plate 3, thereby further improving the heat exchange efficiency.

[0075] The side wall of the cooling shell 2 is provided with a heat dissipation fin plate 10. On the basis of water cooling, air cooling is added, and the heat on the heat dissipation fin plate 10 is removed by natural convection or forced convection of air. When the air flows through the heat dissipation fin plate 10, it exchanges heat with the surface of the heat dissipation fin plate 10, thereby reducing the temperature of the heat dissipation fin plate 10 and the cooling shell 2. The combination of water cooling and air cooling can dissipate heat more quickly.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A motor housing, characterized in that: include: A housing (1), wherein a front end cover (101) is provided at the front end of the housing (1), and a rear end cover (102) is provided at the rear end of the housing (1); A plurality of cooling shells (2) having a U-shaped cross section, wherein the plurality of cooling shells (2) are fixed in an inverted manner on the outer wall of the shell (1), and each cooling shell (2) and the outer wall of the shell (1) form a cooling channel, wherein one end of the cooling channel is a liquid inlet end and the other end is a liquid outlet end; A disturbance plate (3), the disturbance plate (3) sliding in the cooling channel, and gaps for coolant flow are provided between two sides of the disturbance plate (3) and the inner wall of the cooling channel; The liquid inlet end of the cooling channel is provided with a liquid injection assembly (5) for injecting coolant into the cooling channel, and when the liquid injection assembly (5) injects coolant into the cooling channel, the coolant injected into the cooling channel can press the disturbance plate (3); At the liquid outlet end of the cooling channel, an elastic member (4) for sliding and resetting the disturbance plate (3) is provided between the front end cover (101) and the end of the disturbance plate (3); The liquid injection component (5) comprises: An injection head (501), the injection head (501) being located at a liquid inlet end of the cooling channel, and the injection head (501) being fixed on a side wall of the rear end cover (102); A liquid storage tank (502) is used to store the cooling liquid to be injected into the cooling channel, and the liquid storage tank (502) is arranged inside the injection head (501); a spray hole (503), the spray hole (503) being formed on a side wall of the injection head (501), the spray hole (503) being used to spray the coolant in the liquid storage tank (502) into the cooling channel, the coolant water column sprayed from the spray hole (503) being directed toward the end of the disturbance plate (3); The injection holes (503) are distributed in two rows on the injection head (501), and the water columns injected by the two rows of injection holes (503) are distributed in a V shape; The end of the disturbance plate (3) is provided with a groove (301), the inner wall of the groove (301) is in an arc shape, and one end of the injection head (501) close to the disturbance plate (3) is adapted to the groove (301); When the spray hole (503) sprays a coolant water column, the sprayed water column impacts the inner wall of the groove (301); A row of first guide plates (201) are respectively arranged on the inner walls of both sides of the cooling shell (2), and each first guide plate (201) is inclined toward the liquid outlet end; A row of second guide plates (302) are respectively arranged on both sides of the disturbance plate (3), and each second guide plate (302) is inclined toward the liquid inlet end; The end of the first guide plate (201) close to the disturbance plate (3) is curved in an arc shape, and the end of the second guide plate (302) away from the disturbance plate (3) is also curved in an arc shape, and the arc shape of the first guide plate (201) is opposite to the arc shape of the corresponding second guide plate (302).

2. A motor housing according to claim 1, characterized in that: A V-shaped liquid-conducting wall (504) is provided inside the liquid storage tank (502).

3. A motor housing according to claim 1, characterized in that: A water inlet annular groove (1021) is provided inside the rear end cover (102), the inner cavity of each liquid storage groove (502) is in communication with the water inlet annular groove (1021), and a liquid inlet pipe (6) for injecting coolant into the water inlet annular groove (1021) is provided on the side wall of the rear end cover (102); A water outlet annular groove (1011) is provided inside the front end cover (101), a liquid outlet end of each cooling channel is in communication with the water outlet annular groove (1011), and a liquid outlet pipe (7) for discharging the cooling liquid in the water outlet annular groove (1011) is provided on the side wall of the front end cover (101).

4. A motor housing according to claim 1, characterized in that: The housing (1), the front end cover (101) and the rear end cover (102) are connected and fixed by a plurality of bolts (8).

5. The motor housing according to claim 1, characterized in that: A base (9) is arranged below the shell (1).

6. The motor housing according to claim 1, characterized in that: A heat dissipation fin plate (10) is provided on the side wall of the cooling shell (2).

Images