Linear motor cooling module

Abstract

To provide a linear motor cooling module.SOLUTION: A linear motor cooling module according to the present invention mainly includes at least one flow disturbance member provided within a flow path, the flow disturbance member includes first and second protrusions arranged crosswise, each of the protrusions extends toward the center of the flow path, and the cooling fluid flowing through the flow disturbance member is blocked by the first and second protrusions, respectively, forming turbulence, thereby improving problems of uneven temperature distribution and poor cooling effect.SELECTED DRAWING: Figure 9

Description

[Technical field]

[0001] The present invention relates to cooling technology, and in particular to a linear motor cooling module. [Background technology]

[0002] Linear motors typically generate a lot of heat during operation and require cooling to maintain an appropriate operating temperature. A common method is to flow a coolant through the heat dissipating parts of the motor, which absorbs the heat and removes it from the motor, thereby controlling the motor temperature within an acceptable range.

[0003] However, if the coolant normally flows too smoothly through the flow path, the temperature close to the motor will be high and the temperature farther away from the motor will be low, resulting in an uneven temperature distribution and affecting the cooling effect.

[0004] For this reason, Patent Document 1 discloses that the cooling liquid is divided into multiple branches by providing multiple protrusions within the flow path, and Patent Document 2 discloses that the protrusions are wing-shaped, located at the corners of the flow path, and are used to guide the direction of the cooling liquid flow.However, none of the cooling liquid flow conditions disclosed in these patent documents cause significant turbulence, leaving the problem of uneven temperature distribution. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application No. JP2021164193A [Patent Document 2] Japanese Patent Application No. JP2004260941A Summary of the Invention [Problem to be solved by the invention]

[0006] Therefore, the main objective of the present invention is to provide a linear motor cooling module which can generate turbulence when the cooling fluid flows, so as to improve the problems of uneven temperature distribution and poor cooling effect. [Means for solving the problem]

[0007] Therefore, in order to achieve the above object, the main technical feature of the linear motor cooling module provided by the present invention is that at least one flow disturbance member is provided in the flow path, the flow disturbance member has first and second protrusions arranged crosswise, each of the protrusions extends toward the center of the flow path, and the cooling fluid flowing through the flow disturbance member is blocked by the first and second protrusions, respectively, to form turbulence.

[0008] In order to achieve the above technical features, the linear motor cooling module includes a main body including a first plate portion and a second plate portion, and a first end face of the first plate portion and a second end face of the second plate portion overlapping each other along a direction of a virtual first axis; a flow path provided in the main body, the flow path defining a shape of the flow path between the first end face and the second end face, and having a predetermined height (T) on the first axis; and a first protrusion portion and a second protrusion portion located within the flow path, the first protrusion portion protruding from the first end face and having a first height (t f ), forming a first flow guiding space between an extension end of the first protrusion and the second end face, the second protrusion protrudes from the second end face while partially intersecting with an orthogonal projection of the first protrusion on the second end face along the first axis, and has a second height (t r ) to form a second flow guide space between the extension end of the second protrusion and the first end surface; f ) and the second height (t r) is smaller than or equal to a height (T) of the flow path, the contour shapes of the first protrusion and the second protrusion are symmetrical, the first protrusion and the second protrusion each include a first end, a second end, and a connecting portion interposed between the first end and the second end, an orthogonal projection of the first end of the first protrusion on the second end face partially overlaps with the first end of the second protrusion, an orthogonal projection of the second end of the first protrusion on the second end face is offset from the second end of the second protrusion, and two back-to-back sides between the first protrusion and the second protrusion further include flow disturbance members each having a first flow directing plane. [Brief description of the drawings]

[0009] [Figure 1] 1 is a schematic diagram of a linear motor cooling module according to a first embodiment of the present invention. [Figure 1A] FIG. 2 is an enlarged partial view of a single flow disruption member in FIG. [Diagram 2] FIG. 2 is an exploded view of FIG. 1. [Diagram 3] 3 is a schematic three-dimensional view of the first protrusion portion of FIG. 2. [Figure 4] 3 is a schematic three-dimensional view of the second protrusion portion of FIG. 2. [Diagram 5] FIG. 2 is a cross-sectional view taken along line 5-5 in FIG. [Figure 5A] FIG. 5A is a cross-sectional view taken along line 5A-5A in FIG. 1A. [Figure 5B] FIG. 5B is a cross-sectional view taken along line 5B-5B in FIG. 1A. [Figure 6A] FIG. 2 is a cross-sectional view taken along line 6-6 in FIG. [Figure 6B] FIG. 6B is a schematic diagram showing an alternative embodiment of FIG. 6A (i.e., showing a gap between the first protrusion and the second protrusion). [Figure 7] FIG. 2 is another cross-sectional view of FIG. [Figure 8] FIG. 2 is a partially enlarged view of FIG. [Figure 9] FIG. 2 is a schematic three-dimensional view of the flow disturbance member of FIG. 1. [Figure 10]13 is experimental data showing the heat dissipation effect at different ratios between the radius (Rt) of the first circular structure and the width (W) of the flow channel. [Figure 11] 13 is experimental data showing the heat dissipation effect of flow disturbance members at different positions on the flow path. [Figure 12] 13 is experimental data showing the heat dissipation effectiveness of flow disruptors of different sizes. [Figure 13] 13 is experimental data showing the heat dissipation effect of the first protrusion portion at different angles. [Figure 14] 13 is experimental data showing the heat dissipation effect when the number of flow disturbance members is different. [Figure 15] 13 is experimental data showing the heat dissipation effect at different distances between adjacent flow disturbance members. [Figure 16] 13 is experimental data showing the heat dissipation effect of a flow disturbance member with and without a gap. [Figure 17] The different shapes of the first protrusions correspond to the change in the curvature of the connecting portion, the dimensions of the connecting portion, the radius (Rt), and the radius (Rh). [Figure 18] FIG. 5 is a schematic diagram of a flow disturbance member and a flow path according to a second embodiment of the present invention. [Figure 19] 13 is a schematic diagram of a first protrusion according to a third embodiment of the present invention. FIG. [Figure 20] FIG. 10 is a schematic view of a first protrusion according to a fourth embodiment of the present invention. [Figure 21] FIG. 13 is a schematic diagram of a flow channel according to a fifth embodiment of the present invention. [Figure 22] FIG. 13 is an exploded perspective view of a main body according to a sixth embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First embodiment

[0010] 1 to 9, there is shown a linear motor cooling module according to a first embodiment of the present invention, which is assembled to a linear motor (not shown) for heat dissipation and cooling. The linear motor cooling module includes a main body 10, a flow path 20, an inlet 30, an outlet 40, and a plurality of flow disturbance members 50.

[0011] The main body 10 comprises a first plate portion 11 and a second plate portion 12, and a first end surface 111 of the first plate portion 11 and a second end surface 121 of the second plate portion 12 overlap along the direction of an imaginary first axis Z.

[0012] The flow passage 20 is defined by a groove relatively recessed in the first end surface 111 and the second end surface 121, and can be arbitrarily extended in the main body 10 as shown in FIG. 1, that is, different sections of the flow passage 20 extend along a virtual second axis Y or a virtual third axis X, the second axis Y and the third axis X are perpendicular to the first axis Z, and the second axis Y and the third axis X are parallel to a plane formed by the first end surface 111 or the second end surface 121. The inlet 30 is provided in the first plate portion 11 and communicates the start end 21 of the flow passage 20 with the outside of the main body 10. The outlet 40 is provided in the first plate portion 11 and communicates the end 22 of the flow passage 20 with the outside of the main body 10, and the cooling fluid flows through the communication between the inlet 30, the flow passage 20, and the outlet 40.

[0013] However, for ease of explanation, only the portion of the flow path 20 within the dashed line frame in FIG. 1 will be described, and the flow path 20 has a predetermined length L on the second axis Y, a predetermined width W on the third axis X, and a predetermined height T on the first axis Z.

[0014] The flow disturbance member 50 is located within the flow passage 20, and satisfies the condition that the length L of the flow passage 20 is greater than or equal to the width W of the flow passage 20. The flow disturbance member 50 includes a first protrusion 51 and a second protrusion 52, and the first protrusion 51 protrudes from the first end face 111 and has a first height t f a first flow guide space 512 is formed between an extension end 511 of the first protrusion 51 and the second end surface 121, the second protrusion 52 is protruded from the second end surface 121 while partially intersecting with an orthogonal projection of the first protrusion 51 on the second end surface 121 along the first axis Z, and has a second height t ra second flow guide space 522 is formed between the extension end 521 of the second protrusion 52 and the first end surface 111, and the first height t f and the second height t r 6A and 6B, the sum of the distance G between the extension end 511 of the first protrusion 51 and the extension end 521 of the second protrusion 52 on the first axis Z, the first height t f , the second height t r And the height T of the flow channel 20 satisfies the following formula (1).

[0015]

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[0016] In addition, the first height t f , the second height t r If the first height t is too small, the processing yield will be low and it may be difficult to maintain the integrity of the flow disturbance members 50. For this reason, tests were conducted with and without the flow disturbance members 50, and with and without the spacing G of the flow disturbance members 50 being 0, and the test results are shown in FIG. f , the second height t r And the height T of the flow channel 20 satisfies the following formula (2).

[0017]

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[0018] The above-mentioned misalignment means that the positional relationship between the first protrusion 51 and the second protrusion 52 is in the form of, but not limited to, a shift or crossing as shown in Figures 3, 4 and 9. In this example, the contour shapes of the first protrusion 51 and the second protrusion 52 are arranged symmetrically, and each includes a first end 513, 523, a connecting portion 514, 524, a second end 515, 525, a first flow directing plane 516, 526, and a second flow directing plane 517, 527, the connecting portion 514, 524 bridges between the first end 513, 523 and the second end 515, 525, and the two back-to-back sides in the extending direction of the connecting portion 514, 524 respectively include the first flow directing plane 516, 526 and the second flow directing plane 517, 527. 27, and as shown in FIG. 9, the orthogonal projections of the second flow directing plane 517 of the first protrusion 51 and the second flow directing plane 527 of the second protrusion 52 along the first axis Z at the second end face 121 face each other, the orthogonal projections of the first flow directing plane 516 of the first protrusion 51 and the first flow directing plane 526 of the second protrusion 52 along the first axis Z at the second end face 121 face each other, and each of the first flow directing planes 516, 526 extends with a first radius of curvature, and each of the second flow directing planes 517, 527 extends with a second radius of curvature.

[0019] More specifically, the first end 513 of the first protrusion 51 and the first end 523 of the second protrusion 52 each have a first circular structure in the cross section of the second axis Y, and the orthogonal projections along the first axis Z on the second end face 121 overlap each other, and these first circular structures have the same radius Rt. Also, according to the test results shown in FIG. 10, when the ratio of the radius Rt to the width W of the flow path 20 exceeds 18%, the temperature rises significantly and the heat dissipation effect is impaired. Moreover, if the radius Rt is too small, processing becomes difficult and the yield decreases. Therefore, the radius Rt and the width W of the flow path 20 satisfy the following formula (3).

[0020]

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[0021] 11, the temperature increases significantly when the distance Wt between the geometric center of the overlapping portion between the first protrusion 51 and the second protrusion 52 and the center line O of the flow passage 20 parallel to the second axis Y is 15% or more of the width W of the flow passage 20. Therefore, the distance Wt and the width W of the flow passage 20 satisfy the following formula (4).

[0022]

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[0023] In other words, the position of the flow disturbance member 50 is calculated by moving the center line O of the flow passage 20 toward the first end face 111 or the second end face 121 by the distance Wt, i.e., W / 2±Wt.

[0024] The second end 515 of the first protrusion 51 and the second end 525 of the second protrusion 52 each present a second circular structure in the cross section of the second axis Y, and these second circular structures have the same radius Rh, and the orthogonal projection of the second end 515 of the first protrusion 51 on the second end surface 121 is offset from the second end 525 of the second protrusion 52. According to the test results shown in FIG. 12, the larger the ratio of the distance K between the second end 515 of the first protrusion 51 and a virtual line F extending along the second axis Y from the geometric center of the overlapping portion between the first protrusion 51 and the second protrusion 52, and the minimum distance E between the first end 513 and the second end 515 of the first protrusion 51 along the second axis Y, the better the heat dissipation effect, but is limited by specific dimensions, so the distance K and the distance E satisfy the following formula (5).

[0025]

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[0026] According to formula (3) and formula (5), various numerical value dimensional change limits, particularly the radius Rt, the width W of the flow path 20, the first radius of curvature, and the second radius of curvature, are obtained, and further, by combining with changes in the radius Rh, etc., a plurality of different shapes of flow disturbance members 50 can be obtained, for example, but not limited to, several modified examples of the first protrusion 51 shown in Fig. 17. The limited range of the first radius of curvature is 1.25Rt≦first radius of curvature≦60Rt, and the limited range of the second radius of curvature may be the same as the limited range of the first radius of curvature, or may be slightly adjusted.

[0027] As shown in FIG. 8, a first included angle β1 is formed between a line connecting the first end 513 of the first protrusion 51 and the second end 515 of the first protrusion 51 and a virtual line F extending along the second axis Y from the geometric center of the overlapping portion between the first protrusion 51 and the second protrusion 52. Taking the first included angle β1 as an example, β1=45° is tested as a control group, and other different angles are tested as test groups, and the test results are shown in FIG. 13. When β1≦35°, the temperature rises, and when the included angle β≧65°, the temperature is also higher than that of the control group. Therefore, the first included angle β1 is defined as 35° to 65°.

[0028] Furthermore, a second included angle β2 is formed between a line connecting the first end 523 of the second protrusion 52 and the second end 525 of the second protrusion 52 and a virtual line F extending along the second axis Y from the geometric center of the overlapping portion between the first protrusion 51 and the second protrusion 52, and similarly, the second included angle β2 is between 35° and 65°.

[0029] According to the test results shown in FIG. 14, the more the number of flow disturbance members 50 arranged in the flow passage 20, the better the heat dissipation effect. Furthermore, according to the test results shown in FIG. 15, when the ratio of the interval distance P between any two adjacent flow disturbance members 50 along the second axis Y to the width W of the flow passage 20 is ≧1, the temperature starts to have a downward trend. When P / W≧2, the temperature starts to have an upward trend. Also, if the distance P is too large, the total number of the flow disturbance members 50 will decrease, which may affect the turbulence effect. The distance P and the width W of the flow passage 20 satisfy the following formula (6).

[0030]

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[0031] Based on the above configuration description, the specific use case of the present invention is as follows.

[0032] First, as shown in FIG. 1A , when the external cooling fluid flows through the overlapping portion between the first protrusion 51 and the second protrusion 52, the external cooling fluid is blocked and divided to form a first horizontal turbulence P1 and a second horizontal turbulence P2 in the directions of the second axis Y and the third axis X.

[0033] Next, as shown in FIG. 5A , a part of the first horizontal turbulence P1 is separated from the second horizontal turbulence P2 along the first flow guide plane 516 of the first protrusion 51, and another part of the first horizontal turbulence P1 flows along the contour shape of the extension end 511 of the first protrusion 51, changing the distribution position of the external cooling fluid in the flow passage 20 on the first axis Z, and flows into the first flow guide space 512, thereby forming a first vertical turbulence H1 in the direction of the first axis Z; 5B, a part of the second horizontal turbulence P2 is separated from the first horizontal turbulence P1 along the first flow directing plane 526 of the second protrusion 52, and another part of the second horizontal turbulence P2 flows along the contour shape of the extension end 521 of the second protrusion 52, changing the distribution position of the external cooling fluid in the flow passage 20 on the first axis Z, and flows into the second flow directing space 522, thereby forming a second vertical turbulence H2 in the direction of the first axis Z. Second embodiment

[0034] 18 shows a second embodiment of the present invention, which differs from the first embodiment in that the orthogonal projection of the first circular structure of the first protrusion 51A on the second end surface 121A partially overlaps with the first circular structure of the second protrusion 52A. In other words, the orthogonal projection of the first circular structure of the first protrusion 51A on the second end surface 121A along the first axis Z is tangent to the first circular structure of the second protrusion 52A, and the distance Wg between the centers of curvature of the first circular structures and the radius Rt of the first circular structures satisfy the following formula (7).

[0035]

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[0036] Furthermore, the distance Y between the second end 515A of the first protrusion 51A and the second end 525A of the second protrusion 52A, the width W of the flow path 20A, the radius Rt of the first circular structure, and the distance Wg between the centers of curvature of the first circular structure satisfy the following equation (8).

[0037]

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[0038] The difference between the third embodiment of the present invention and the first embodiment is the change in the shape of the flow disturbance member. In Fig. 19, the first protrusion 51B is taken as an example, the second end 515B of the first protrusion 51B has a substantially rectangular structure in the cross section of the second axis Y, the second flow directing plane 517B extends along a straight line, and the first flow directing plane 516B extends in an arc shape. The shape design of the second protrusion is the same as that of the first protrusion 51B, so a detailed description thereof will be omitted here. Fourth embodiment

[0039] 20 shows a fourth embodiment of the present invention, and the difference between the fourth embodiment and the third embodiment is that the first flow directing plane 516C and the second flow directing plane 517C both extend along a straight line.

[0040] FIG. 21 shows a fifth embodiment of the present invention. The difference between the fifth embodiment and the first embodiment is that the flow path 20D includes a first straight section 23 and a second straight section 24 adjacent to the first straight section 23, the first straight section 23 extends along the direction of the second axis Y, and the extension direction of the second straight section 24 has a deflection angle θ with respect to the second axis Y. When the deflection angle θ, the length L1 of the first straight section 23, the length L2 of the second straight section 24 and the width W of the flow path 20D satisfy the following formula (9), the flow disturbance member (not shown) can be positioned in the first straight section 23 or the second straight section 24.

[0041]

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[0042] Figure 22 shows a sixth embodiment of the present invention, and the difference between the fifth and first embodiments is that the main body 10E further includes a third plate portion 13 provided between the first plate portion 11E and the second plate portion 12E, and a hollow region 131 is provided in the third plate portion 13, and the hollow region 131, the first end face 111E and the second end face 121E define the flow path (not shown). [Explanation of symbols]

[0043] 10, 10E Structure 11, 11E 1st plate part 111, 111E 1st end surface 12, 12E 2nd plate part 121, 121A, 121E 2nd end surface 13 Third plate part 131 Hollow region 20, 20D flow path 21 Beginning 22 Terminal 23 First Straight Section 24 Second Straight Section 30 Inlet 40 Outlet 50 Flow Disturbance Member 51, 51A, 51B 1st protrusion 511 Extended end 512 1st guiding space 52, 52A 2nd protrusion 521 Extended end 522 2nd flow guide space 513, 523 1st end 514, 514B, 514C, 524 connection part 515, 515A, 515B, 525, 525A 2nd end 516, 516B, 516C, 526 1st guiding plane 517, 517B, 517C, 527 2nd guiding plane F Virtual line H1 First vertical disturbance H2 Second vertical disturbance L Length L1, L2 length O center line P1 First horizontal disturbance P2 Second horizontal disturbance Rt, Rh radius T Height t f First Height t r Second Height W width Wt, Y, Wg, K, E, P distance X 3rd axis Y 2nd Axis Z 1st axis β1 1st included angle β2 2nd included angle θ deflection angle

Claims

1. a main body including a first plate portion and a second plate portion, the first end surface of the first plate portion and the second end surface of the second plate portion overlapping each other along a direction of a virtual first axis; a flow passage provided in the body, the flow passage defining a shape between the first end surface and the second end surface, the flow passage having a predetermined height (T) on the first axis; The flow passage is located within the flow passage and includes a first protrusion and a second protrusion, the first protrusion protruding from the first end surface and having a first height (t ｆ ), forming a first flow guide space between an extension end of the first protrusion and the second end face, the second protrusion protrudes from the second end face while partially intersecting with an orthogonal projection of the first protrusion on the second end face along the first axis, and has a second height (t ｒ ) and a second flow guide space is formed between the extension end of the second protrusion and the first end surface; ｆ ) and the second height (t ｒ a sum of the distances (T) between the first and second protrusions is smaller than or equal to a height (T) of the flow path, the contour shapes of the first and second protrusions are symmetrical, the first and second protrusions each include a first end, a second end, and a connecting portion between the first end and the second end, an orthogonal projection of the first end of the first protrusion on the second end face partially overlaps with the first end of the second protrusion, an orthogonal projection of the second end of the first protrusion on the second end face is shifted from the second end of the second protrusion, and at least one flow disturbing member having a first flow directing plane is provided on each of two opposite sides between the first and second protrusions. Including the linear motor cooling module.

2. 2. The linear motor cooling module of claim 1, wherein the flow passage has a predetermined length (L) on an imaginary second axis and a predetermined width (W) on an imaginary third axis so that an external cooling fluid flows within the flow passage, the second axis and the third axis are each perpendicular to the first axis, and the second axis and the third axis are each parallel to a plane formed by the first end face or the second end face.

3. 3. The near-motor cooling module of claim 2, further comprising: a first included angle between a line connecting the first end of the first protrusion and the second end of the first protrusion and an imaginary line extending from a geometric center of an overlapping portion between the first protrusion and the second protrusion along the second axis, the first included angle being 35° to 65°; and a second included angle between a line connecting the first end of the second protrusion and the second end of the second protrusion and an imaginary line extending from a geometric center of an overlapping portion between the first protrusion and the second protrusion along the second axis, the second included angle being 35° to 65°.

4. 3. The near-motor cooling module of claim 2, wherein the first end of the first protrusion and the first end of the second protrusion each have a first circular structure in a cross section of the second axis (Y), the first circular structures have the same radius (Rt), and the radius (Rt) and the width (W) of the flow path satisfy the following formula: [0010]

5. 5. The linear motor cooling module of claim 4, wherein an orthogonal projection of the first circular structure of the first protrusion portion along the first axis at the second end face of the first circular structure of the second protrusion portion is tangent to the first circular structure of the second protrusion portion, and a distance (Wg) between the centers of curvature of the first circular structures and a radius (Rt) of the first circular structure satisfy the following formula: [0025]

6. The linear motor cooling module of claim 4, wherein the distance (Y) between the second end of the first protrusion portion and the second end of the second protrusion portion, the width (W) of the flow path, the radius (Rt) of the first circular structure, and the distance (Wg) between the centers of curvature of the first circular structure satisfy the following formula. [0030]

7. The linear motor cooling module according to claim 2 , wherein the flow disturbing members are located in a section in which a length (L) of the flow passage extending in the second axial direction is greater than or equal to a width (W) of the flow passage.

8. 3. The linear motor cooling module of claim 2, wherein the flow path includes a first straight section and a second straight section adjacent to the first straight section, the first straight section extends along the direction of the second axis, and the extension direction of the second straight section has a deflection angle (θ) with respect to the second axis, and the deflection angle (θ), the length (θ) of the first straight section, the length (L2) of the second straight section, and the width (W) of the flow path satisfy the following formula, thereby allowing the flow disturbance member to be positioned in the first straight section or the second straight section. [0045]

9. 3. The linear motor cooling module of claim 2, wherein the distance (Wt) between the geometric center of the overlapping portion between the first protrusion portion and the second protrusion portion and the center line (O) of the flow path parallel to the second axis (Y), and the width (W) of the flow path satisfy the following formula. [0050]

10. 3. The linear motor cooling module of claim 2, wherein a distance (K) between the second end of the first protrusion and a virtual line extending along the second axis from a geometric center of an overlapping portion between the first protrusion and the second protrusion, and a minimum distance (E) between the first end and the second end of the first protrusion along the second axis satisfy the following formula: [006]

11. The distance (G) between the extending end of the first protrusion and the extending end of the second protrusion on the first axis (Z), the first height (t ｆ ), the second height (t ｒ 3. The linear motor cooling module of claim 2, wherein the flow rate (T) and the height (T) of the flow passage satisfy the following formula: [0070]

12. The first height (t ｆ ), the second height (t ｒ 3. The linear motor cooling module of claim 2, wherein the flow rate (T) and the height (T) of the flow passage satisfy the following formula: [0080]

13. 3. The linear motor cooling module of claim 2, wherein the number of the flow disturbance members is two, and the distance (P) between the two flow disturbance members along the second axis and the width (W) of the flow passage satisfy the following formula: [0090]

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