An eddy current imitation flow channel type heat sink

Abstract

The present application relates to a kind of imitated vortex flow channel type heat sink, solve the poor heat dissipation effect of prior art existing problem, the technical scheme used: including bottom plate, the side of the bottom plate is set up several pieces of radiating fin, it is characterized in that each radiating fin is curved in the same direction arc-shaped radiating fin, adjacent between the air duct of radiating fin is arc-shaped air duct, the arc-shaped air duct is imitated vortex flow channel structure, the bending direction of the arc-shaped air duct is along the air direction of the outlet of frequency conversion pump fan and is arranged.The effect: arc-shaped air duct is imitated vortex flow channel structure, the bending direction of radiating fin is along the vortex flow direction of the outlet of outlet and is arranged, so that arc-shaped air duct is along the vortex direction and extends, avoid to produce obstruction to air flow, reduce even avoid air field disorder, greatly reduce wind loss, greatly reduce the influence to air flow velocity, can quickly dissipate the heat in motor and control module, greatly improve heat dissipation effect.

Description

A simulated vortex flow channel type heat dissipation device Technical Field

[0001] This invention relates to the field of water pumps, and more particularly to a vortex-like flow channel type heat dissipation device. Background Technology

[0002] In recent years, to meet the needs of industrial applications and small-scale commercial booster pumps, there have been higher requirements for variable frequency (VFD) pumps. High-efficiency, energy-saving, efficient heat dissipation, and compact structures are becoming the mainstream in the market. Existing VFD pumps have the following drawbacks: 1. Backpack VFD pumps using split-type inverters are large, occupy a lot of space, and are expensive. 2. The heat dissipation device of integrated backpack VFD pumps cannot perfectly match the airflow direction of the motor fan, easily causing internal airflow turbulence, significant airflow loss, and unsatisfactory heat dissipation. 3. The backpack VFD pump's structure is not compact enough and no longer meets future market development trends.

[0003] A variable frequency pump includes a pump body, a motor that drives the impeller within the pump body, a fan located at the rear of the motor, and a control module (i.e., a frequency converter) mounted on the motor and connected to it via signals and electricity. The frequency converter includes an open-bottom housing, a base plate at the bottom of the housing, and heat sinks on the base plate. Electronic components are housed within the housing and fixed to the base plate. An air outlet is provided on the fan housing, corresponding to the side wall of the motor. The heat sinks are straight strips, aligned with the heat sinks on the motor housing, and corresponding to the air outlet. Regardless of whether it's a split-type frequency converter or not, the heat sinks on the cooling system cannot perfectly match the airflow direction of the motor and fan. The airflow from the motor and fan outlet has a certain curvature, creating a vortex-like flow. The straight strip-shaped heat sinks obstruct this airflow, easily causing internal airflow turbulence, significant airflow loss, and greatly affecting airflow efficiency and heat dissipation. Summary of the Invention

[0004] The purpose of this invention is to solve the above-mentioned problems existing in the prior art by providing a vortex-like flow channel heat dissipation device. The arc-shaped air duct on it is a vortex-like flow channel structure. The bending direction of the heat sink is set along the vortex-like airflow direction from the air outlet, so that the arc-shaped air duct extends along the vortex direction, avoiding obstruction of airflow, reducing or even avoiding airflow turbulence, greatly reducing wind power loss, greatly reducing the impact on airflow velocity, and enabling the heat in the motor and control module to be dissipated quickly, greatly improving the heat dissipation effect.

[0005] The above-mentioned technical objective of this invention is mainly achieved through the following technical solution: a vortex-like flow channel type heat dissipation device, comprising a base plate, on one side of which several heat dissipation fins are erected. The heat dissipation fins are characterized by being arc-shaped fins curved in the same direction, and the air ducts between adjacent heat dissipation fins are arc-shaped air ducts. These arc-shaped air ducts have a vortex-like flow channel structure, and their curvature follows the airflow direction of the fan outlet on the variable frequency pump. The arc-shaped air ducts are vortex-like flow channel structures, and the curvature of the heat dissipation fins follows the vortex-like airflow direction from the outlet, allowing the arc-shaped air ducts to extend along the vortex direction, avoiding obstruction of the airflow, reducing or even eliminating airflow turbulence, greatly reducing wind loss, significantly minimizing the impact on airflow velocity, and enabling rapid dissipation of heat from the motor and control module, thus greatly improving the heat dissipation effect.

[0006] Specifically, an air outlet is provided on the peripheral wall of the fan shroud, and the air outlet is located below the heat dissipation device. The airflow of hot air coming out of the air outlet is in the shape of a vortex. The heat sink in this technical solution is a vortex-like flow channel structure, which is set along the direction of the vortex, so that the hot air continues to flow outward along the original vortex trajectory. Therefore, the heat sink with the vortex-like flow channel structure has a good fluid guiding effect on the hot air, and avoids obstructing the hot air, avoiding internal airflow turbulence, ensuring no loss of airflow, and achieving good heat dissipation effect.

[0007] As a further improvement and supplement to the above technical solution, the present invention adopts the following technical measures: the base plate is rectangular, and each of the heat sinks forms a corresponding air inlet on the front side of the base plate. The width direction of the base plate corresponds to the length direction of the motor, and the length direction of the base plate corresponds to the width direction of the motor. The air inlets of the heat sinks are located on the long side of the front side of the base plate, and the air outlets of the heat sinks are located on the long side of the rear side of the base plate. The air outlets on the fan cover are correspondingly arranged with the air inlets of the heat sinks. During operation, hot air is guided from the front side of the base plate to the rear side of the base plate and diffuses into the external space of the motor and control module, resulting in good heat dissipation.

[0008] For safety and improved visual appeal, the two ends of the long front side of the base plate are rounded. To facilitate mold opening and positioning of the heat sinks, each heat sink is bent towards one of the rounded corners.

[0009] The top of the heat sink, located in the central region of the base plate, rests on an inner cylindrical surface for fastening to the cylindrical motor housing. The top surface of the heat sink abuts against the motor housing, creating a relatively enclosed channel between the heat sink and the motor housing, preventing air leakage and allowing hot air to be guided out more smoothly and quickly. Furthermore, this abutting fit helps reduce the overall volume and space occupied.

[0010] To better fit the structure of the motor and fan housing and further reduce the possibility of air leakage, the top surface of the heat sink is higher than that of the heat sink located in the middle region of the base plate, corresponding to both ends of the base plate, forming a structure that is high at both ends and low in the middle.

[0011] To facilitate mold opening, demolding, and production processing, the curvature of each heat sink is consistent.

[0012] To enhance the strength of the heat sinks, each heat sink is equipped with reinforcing pillars, which are integral with the heat sink and the base plate. For ease of mold opening, demolding, and manufacturing, the reinforcing pillars are cylindrical, with at least two pillars on each heat sink. Typically, the reinforcing pillars are located near both ends of each heat sink (except for those located at the bottom ends).

[0013] Each of the four corners of the base plate is provided with a first connecting hole, and the base plate has a first boss corresponding to the first connecting hole, the first boss protruding outward from the side of the base plate facing the heat sink. The reinforcing posts on the heat sink at both ends of the bottom need to avoid the corresponding positions of the connecting holes. The provision of the first boss increases the thickness of the connecting wall of the connecting hole. Typically, the first connecting hole is an internally threaded connecting hole, and increasing the thickness of the connecting wall improves the fit strength and connection reliability between the connector and the connecting hole.

[0014] The base plate has a positioning boss on the side opposite to the heat sink. The outer contour of the positioning boss matches the edge of the base plate, and the positioning boss avoids the connection holes at the four corners of the base plate. The positioning boss is designed to facilitate positioning and engagement with the control module housing, improving assembly efficiency. The connection holes at the four corners are used to connect the base plate and the control module housing via connectors.

[0015] The positioning boss is provided with several functional module bosses, each protruding outward from the positioning boss. A second connecting hole is provided on each functional module boss. A second boss is provided on the base plate corresponding to the second connecting hole, protruding outward from the side of the base plate facing the heat sink. The functional module bosses are used to house the corresponding functional modules. The use of bosses increases the thickness of the corresponding parts, thereby enhancing their strength. The second connecting holes are used to fix the functional modules to the base plate via connectors. The second bosses increase the thickness of the connecting wall of the connecting hole. Typically, the second connecting hole is an internally threaded connecting hole. Increasing the thickness of the connecting wall improves the fit strength and connection reliability between the connector and the connecting hole.

[0016] The beneficial effects of this invention are as follows: 1. The heat dissipation device is equipped with arc-shaped heat sinks, and adjacent heat sinks form an arc-shaped air duct. The arc-shaped air duct is a simulated vortex flow channel structure. The bending direction of the heat sinks is set along the vortex-like airflow direction from the air outlet, so that the arc-shaped air duct extends along the vortex direction, avoiding obstruction of the airflow, reducing or even eliminating airflow turbulence, greatly reducing wind power loss, and significantly reducing the impact on airflow velocity. This allows for rapid dissipation of heat from the motor and control module, greatly improving the heat dissipation effect. 2. The top surface of the heat sink in the bottom middle area is located on a cylindrical inscribed circle, which allows the top surface of the heat sink to follow the cylindrical surface of the motor, reducing the waste of assembly space and also helping to reduce the volume occupied by the heat dissipation device when assembled with the motor. The entire pump structure is more compact, giving the backpack-type variable frequency pump more room to play in industrial support and other fields. 3. The structure of the heat dissipation device is optimized, reducing the amount of heat dissipation material used and improving the heat dissipation performance of the frequency converter. Attached Figure Description

[0017] Figure 1 is a schematic diagram of a vortex-like heat dissipation device according to the present invention.

[0018] Figure 2 is a schematic diagram of the rear view structure of Figure 1.

[0019] Figure 3 is a schematic diagram of the left view structure of Figure 1.

[0020] Figure 4 is a three-dimensional structural diagram of Figure 1 from one perspective.

[0021] Figure 5 is a three-dimensional structural diagram of Figure 4 from a bottom-view angle.

[0022] Figure 6 is a three-dimensional structural diagram from another upward angle of Figure 4.

[0023] Figure 7 is a partial structural schematic diagram of the present invention applied to a variable frequency pump.

[0024] Figure 8 is a schematic diagram of a fan cover on a variable frequency pump.

[0025] In the diagram: 1. Base plate; 2. Heat sink; 3. Arc-shaped air duct; 4. Air inlet; 5. Rounded corner; 6. Reinforcing column; 7. First connecting hole; 8. First boss; 9. Positioning boss; 10. Functional module boss; 11. Second connecting hole; 12. Second boss; 13. Fan cover; 14. Air outlet; 15. Box body. Detailed Implementation

[0026] The technical solution of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0027] Example 1: As shown in Figures 1-8, a vortex-like flow channel type heat dissipation device includes a base plate 1. Several heat dissipation fins 2 are erected on one side of the base plate 1. Each heat dissipation fin 2 is an arc-shaped heat dissipation fin 2 curved in the same direction. The air duct between adjacent heat dissipation fins 2 is an arc-shaped air duct 3. The arc-shaped air duct 3 has a vortex-like flow channel structure, and its curvature direction follows the airflow direction of the air outlet 14 of the fan on the frequency converter pump. The arc-shaped air duct 3 has a vortex-like flow channel structure, and the curvature direction of the heat dissipation fins 2 follows the vortex-like airflow direction from the air outlet 14 on the fan cover, causing the arc-shaped air duct 3 to extend along the vortex direction. To facilitate mold opening, demolding, and production processing, the curvature of each heat dissipation fin 2 is consistent.

[0028] Generally, the base plate 1 is rectangular, and each heat sink 2 forms a corresponding air inlet 4 on the front side of the base plate 1. The width direction of the base plate 1 corresponds to the length direction of the motor, and the length direction of the base plate 1 corresponds to the width direction of the motor. The air inlet 4 of the heat sink 2 is located on the long side of the front side of the base plate 1, and the air outlet of the heat sink 2 is located on the long side of the rear side of the base plate 1. The air outlet 14 on the fan cover 13 is correspondingly arranged with respect to the air inlet 4 of the heat sink 2.

[0029] For safety and to enhance visual appeal, the two ends of the long front side of the base plate 1 are rounded corners 5. To facilitate mold opening and positioning of the heat sinks 2, each heat sink 2 is bent towards one of the rounded corners 5.

[0030] When applied to a variable frequency pump, an air outlet 14 is provided on the peripheral wall of the fan cover 13. The air outlet 14 is located below the heat dissipation device. The hot air coming out of the air outlet 14 has a vortex shape. The heat sink 2 in this technical solution has a simulated vortex flow channel structure, which is set along the vortex direction, so that the hot air continues to flow outward along the original vortex trajectory. During operation, the hot air is guided from the front side of the base plate 1 to the rear side of the base plate 1 and diffuses into the external space of the motor and control module, resulting in good heat dissipation. Therefore, the heat sink 2 with a simulated vortex flow channel structure has a good fluid guiding effect on the hot air, and avoids obstructing the hot air, avoiding internal airflow turbulence, and preventing airflow loss. It greatly reduces the impact on airflow velocity and can quickly dissipate the heat in the motor and control module, greatly improving the heat dissipation effect.

[0031] To further optimize the heat dissipation device and avoid large gaps that could lead to air leakage in the non-vortex direction between the heat dissipation device and the motor housing when they are fitted together with the motor, the top of the heat sink 2, located in the central region of the base plate 1, rests on an inner cylindrical shape. The outer diameter of the inner cylindrical shape is the same as the outer diameter of the motor cylinder, allowing the heat sink 2 to fit snugly and securely onto the cylindrical motor housing. The top surface of the heat sink 2 abuts against the motor housing, creating a relatively closed channel between the heat sink and the motor housing, preventing air leakage and allowing hot air to be guided out more smoothly and quickly. Furthermore, this snug fit helps reduce the overall volume and space occupied.

[0032] To better fit the structure of the motor and fan housing 13 and further reduce the possibility of air leakage, the top surface of the heat sink 2 is higher than that of the heat sink 2 located in the middle region of the base plate 1, corresponding to both ends of the base plate 1, forming a structure that is high at both ends and low in the middle. That is, downward extending sections are formed at both ends of the heat dissipation device. Here, "up" and "down" are defined in the direction shown in Figure 8, with the heat dissipation device located above the motor and fan housing, and the motor and fan housing located below the heat dissipation device, with both ends of the heat dissipation device extending towards the motor and fan housing.

[0033] To further optimize the heat sinks and enhance their strength, each heat sink 2 is equipped with a reinforcing post 6. The reinforcing post 6 is an integral structure with the heat sink 2, and the heat sink 2 is an integral structure with the base plate 1. For ease of mold opening, demolding, and manufacturing, the reinforcing post 6 is cylindrical, and at least two reinforcing posts 6 are provided on each heat sink 2. Typically, the reinforcing posts 6 are located near both ends of each heat sink 2 (except for those located at the bottom ends).

[0034] To facilitate connection and improve connection strength and reliability, each of the four corners of the base plate 1 is provided with a first connecting hole 7. A first boss 8 is provided on the base plate 1 corresponding to each of the first connecting holes 7, protruding outwards from the side of the base plate 1 facing the heat sink 2. The reinforcing posts 6 located on the heat sink 2 at both ends of the bottom need to avoid the corresponding positions of the connecting holes. The provision of the first boss 8 increases the thickness of the connecting wall of the connecting hole. Typically, the first connecting hole 7 is an internally threaded connecting hole, and increasing the thickness of the connecting wall improves the fit strength between the connector and the connecting hole, as well as the connection reliability.

[0035] To facilitate assembly, the base plate 1 has a positioning boss 9 on the side facing away from the heat sink 2. The outer contour of the positioning boss 9 matches the edge spacing of the base plate 1, and the positioning boss 9 avoids the connection holes at the four corners of the base plate 1. The positioning boss 9 is provided to facilitate positioning and fastening with the housing 15 of the control module, improving assembly efficiency. The connection holes at the four corners are connected to the base plate 1 and the housing 15 of the control module through connectors.

[0036] Furthermore, the positioning boss 9 is provided with several functional module bosses 10, each protruding outward from the positioning boss 9. Each functional module boss 10 has a second connecting hole 11. The base plate 1 has a second boss 12 corresponding to the second connecting hole 11, protruding outward from the side of the base plate 1 facing the heat sink 2. The functional module bosses 10 are used to house the corresponding functional modules. The boss design increases the thickness of the corresponding parts, thereby enhancing their strength. The second connecting holes 11 are used to fix the functional modules to the base plate 1 via connectors. The second boss 12 increases the thickness of the connecting wall of the connecting hole. Typically, the second connecting hole 11 is an internally threaded connecting hole. Increasing the thickness of the connecting wall improves the fit strength and reliability between the connector and the connecting hole.

[0037] Example 2: As shown in Figures 1-8, a variable frequency pump using a simulated vortex flow channel heat dissipation device includes a pump body, a motor driving the impeller within the pump body, a fan located at the tail of the motor, and a control module (i.e., a frequency converter) mounted on the motor and connected to it via signal and electrical connections. The frequency converter includes a box 15 with an open bottom and a simulated vortex flow channel heat dissipation device located at the bottom of the box. This simulated vortex flow channel heat dissipation device is the same as the one described in Example 1. Electronic components are housed within the box and fixed to the base plate 1 of the simulated vortex flow channel heat dissipation device. More specifically, the electronic components are functional modules, which are mounted on corresponding functional module bosses 10.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Various modifications and variations can be made to the above embodiments. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A vortex-like heat dissipation device, comprising a base plate (1), wherein a plurality of heat dissipation fins (2) are erected on one side of the base plate (1), characterized in that... Each heat sink (2) is an arc-shaped heat sink (2) that bends in the same direction. The air duct between adjacent heat sinks (2) is an arc-shaped air duct (3). The arc-shaped air duct (3) is a simulated vortex flow channel structure. The bending direction of the arc-shaped air duct (3) is set along the airflow direction of the air outlet (14) of the fan on the variable frequency pump. The base plate (1) is rectangular. Each heat sink (2) forms a corresponding air inlet (4) on the front side of the base plate (1). The top of the heat sink (2) located in the middle area of ​​the base plate (1) is located on an inner cylindrical shape for fastening to the cylindrical motor housing. The directions corresponding to the two ends of the base plate (1) are as follows: The top surface of the heat sink (2) is higher than that of the heat sink (2) located in the middle area of ​​the base plate (1), forming a structure that is high at both ends and low in the middle; the four corners of the base plate (1) are provided with first connecting holes (7), and the base plate (1) has a first boss (8) corresponding to the first connecting hole (7), the first boss (8) protrudes outward from the side of the base plate (1) facing the heat sink (2); the side of the base plate (1) away from the heat sink (2) is provided with a positioning boss (9), the outer contour of the positioning boss (9) matches the edge spacing of the base plate (1), and the positioning boss (9) avoids the first connecting hole (7).

2. The vortex-like flow channel type heat dissipation device according to claim 1, characterized in that... The two ends of the long side of the front side of the base plate (1) are rounded corners (5), and each heat sink (2) is bent toward one of the rounded corners (5).

3. The vortex-like flow channel type heat dissipation device according to claim 1, characterized in that... The bending curvature of each heat sink (2) is consistent.

4. The vortex-like flow channel type heat dissipation device according to claim 3, characterized in that... Each heat sink (2) is provided with a reinforcing post (6), the reinforcing post (6) and the heat sink (2) are an integral structure, and the heat sink (2) and the base plate (1) are an integral structure.

5. The vortex-like flow channel type heat dissipation device according to claim 1, characterized in that... The positioning boss (9) is provided with a plurality of functional module bosses (10), the functional module bosses (10) protruding outward from the positioning boss (9), the functional module bosses (10) are provided with a second connecting hole (11), the base plate (1) has a second boss (12) corresponding to the second connecting hole (11), the second boss (12) protruding outward from the side of the base plate (1) facing the heat sink (2).

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