Movable fan-free forced cooling radiator

Abstract

The utility model belongs to the technical field of radiators, and provides a movable fan-free forced cooling radiator which comprises a radiating bottom plate and a plurality of radiating fins which are arranged in parallel at intervals, and the radiating fins are movably connected to the radiating bottom plate. The connecting rod is arranged on the periphery of the cooling fins in a surrounding mode, and the two opposite side edges of each cooling fin are fixedly connected with the connecting rod; the two magnetic force generating devices are fixedly arranged on the heat dissipation bottom plate and located on the outer sides of the two ends of the connecting rod respectively. The magnetic force generating device generates alternately changing magnetic fields after being electrified in a pulse mode, the alternately changing magnetic fields push and attract the connecting rod to enable the connecting rod to achieve horizontal reciprocating motion, the connecting rod drives the cooling fins to swing, the radiator does not need a fan, forced convection is generated only through back-and-forth swing of the cooling fins, and heat dissipation is directly conducted. The problems that a radiator is large in size and poor in flexibility are solved, and the user experience feeling is greatly improved.

Description

Technical Field

[0001] The present application belongs to the technical field of radiators, and in particular relates to a movable fanless forced cooling radiator. Background Art

[0002] At present, with the rapid development of power electronics technology, users have higher and higher requirements for the modularization, integration, lightweight, low cost and high reliability of power electronics, which makes the heat generated by power devices themselves increase during operation. If the heat generated by the power devices cannot be dissipated quickly and in time, the temperature of the chips in the power devices will increase, which will cause the performance to decrease and the service life to shorten. In severe cases, it will lead to the failure of the power devices and the burning and explosion of the chips.

[0003] The active radiator design in the prior art all uses heat conduction between the heat sink fixed at the bottom plate and the bottom plate. The heat diffuses to the heat sink to increase the temperature of the heat sink. The fan then drives the surrounding air to forcefully flow over the surface of the heat sink. Through convection heat exchange between the solid and the fluid, the heat on the heat sink is transferred to the air, thereby reducing the temperature of the heat sink. Indirectly, the temperature of the bottom plate is reduced, thereby reducing the temperature of the heat source.

[0004] However, the existing active heat sink design has the following problems: ① When the space gap reserved on the air intake surface of the fan is not enough, it will cause problems such as fan stall, airflow backflow, and fan blade whistling; ② In some scenarios, the space left for the heat sink is small, which leads to limited space for the fan and lack of good flow conditions. Therefore, it is urgent to provide a heat sink with small size and good heat dissipation performance to solve the above problems. Utility Model Content

[0005] The purpose of the embodiments of the present application is to provide a movable fanless forced cooling radiator, aiming to solve the technical problems of large size, poor flexibility and poor heat dissipation performance in the prior art.

[0006] To achieve the above-mentioned purpose, the technical solution adopted in the embodiment of the present application is: a movable fanless forced cooling radiator, comprising a heat dissipation base plate; a plurality of heat dissipation fins arranged in parallel and spaced apart from each other, each of the heat dissipation fins being movably connected to the heat dissipation base plate; a connecting rod, the connecting rod being arranged around the plurality of heat dissipation fins, the two opposite sides of each of the heat dissipation fins being fixedly connected to the connecting rod respectively; and two magnetic force generating devices, the magnetic force generating devices being fixedly arranged on the heat dissipation base plate and respectively located on the outer sides of the two ends of the connecting rod;

[0007] The magnetic force generating device generates an alternating magnetic field after being pulse-powered, and the alternating magnetic field pushes and attracts the connecting rod, so that the connecting rod realizes horizontal reciprocating motion, and the connecting rod drives each of the heat sinks to swing.

[0008] Specifically, a plurality of slots are provided on the upper surface of the heat dissipation bottom plate, and a bottom rod is provided at the bottom of each heat dissipation fin, and the bottom rod cooperates with the slots.

[0009] Furthermore, the lower end of the cross section of the slot is circular, and the upper end of the cross section is an inverted "eight" shape. The bottom rod is cylindrical and is clamped at the lower end of the slot. The lower end of the heat sink can swing in the upper end of the slot.

[0010] Furthermore, a heat-conductive filler is filled between the bottom rod and the slot.

[0011] Specifically, the magnetic force generating device includes a magnetic force generator fixed on the heat dissipation base plate, a magnetic core arranged on the upper end of the magnetic force generator, a coil sleeved on the magnetic core, and a magnet arranged on the outside of the connecting rod and opposite to the magnetic core.

[0012] Furthermore, a spring sheet is provided on the inner side of the connecting rod, and the spring sheet is arranged opposite to the magnet.

[0013] Specifically, two opposite sides of each heat sink are fixedly connected to the connecting rod via connectors.

[0014] Furthermore, the connector is "U"-shaped, the open end of the connector clamps the heat sink, and the closed end of the connector is fixed on the connecting rod.

[0015] Furthermore, the connecting rod is enclosed in a rectangular shape, a plurality of the connectors are evenly arranged on the inner sides of two long sides of the connecting rod, and the two magnetic force generating devices are respectively located on the outer sides of two short sides of the connecting rod.

[0016] Furthermore, the connector is a flexible part, which saves costs and reduces friction noise.

[0017] In the present application, the heat sink is movably connected to the heat dissipation base plate, and an alternating magnetic field is generated after a magnetic force generating device is pulsed with electricity. The alternating magnetic field pushes and attracts the connecting rod, causing the connecting rod to reciprocate back and forth, and the connecting rod drives the heat sink to move back and forth, thereby realizing the heat dissipation function. The radiator does not require a fan, but only relies on the back and forth swinging of the heat sink to generate forced convection to directly dissipate heat, which solves the problems of large size and poor flexibility of the radiator and greatly improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A schematic diagram of the structure of a movable fanless forced cooling radiator provided in an embodiment of the present application;

[0020] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0021] Among them, the reference numerals in the figure are:

[0022] 1-heat dissipation base plate; 2-heat sink; 3-connecting rod; 4-connector; 5-magnetic generator; 6-magnetic core; 7-coil; 8-magnet; 9-spring sheet; 10-bottom rod; 11-card slot; 111-card slot upper end; 112-card slot lower end; 12-round shaft. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0024] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0025] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0026] In addition, 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 the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, and "several" means one or more, unless otherwise clearly and specifically defined.

[0027] Reference Figure 1The present application provides a movable fanless forced cooling radiator, comprising a heat dissipation base plate 1; a plurality of heat dissipation fins 2 arranged in parallel and at intervals, each heat dissipation fin 2 being movably connected to the heat dissipation base plate 1; a connecting rod 3, the connecting rod 3 being arranged around the plurality of heat dissipation fins 2, and the opposite sides of each heat dissipation fin 2 being fixedly connected to the connecting rod 3 respectively; and two magnetic force generating devices, the magnetic force generating devices being fixedly arranged on the heat dissipation base plate 1 and respectively located on the outer sides of the two ends of the connecting rod 3; the magnetic force generating devices generate an alternating magnetic field after being pulse-powered, and the alternating magnetic field pushes and attracts the connecting rod 3, so that the connecting rod 3 realizes horizontal reciprocating motion, and the connecting rod 3 drives each heat dissipation fin 2 to swing.

[0028] In the present application, the heat sink 2 is movably connected to the heat dissipation base plate 1, and an alternating magnetic field is generated after a magnetic force generating device is pulsed with electricity. The alternating magnetic field pushes and attracts the connecting rod 3, so that the connecting rod 3 can reciprocate back and forth, and the connecting rod 3 drives the heat sink 2 to move back and forth, thereby realizing the heat dissipation function. The radiator does not require a fan, but only relies on the back and forth swinging of the heat sink 2 to generate forced convection to directly dissipate heat, which solves the problems of large size and poor flexibility of the radiator and greatly improves the user experience.

[0029] Specifically, combined Figure 2 A plurality of slots 11 are provided on the upper surface of the heat dissipation base plate 1, and a bottom rod 10 is provided at the bottom of each heat dissipation fin 2. The bottom rod 10 cooperates with the slots 11 to realize the movable connection between the heat dissipation fin 2 and the heat dissipation base plate 1.

[0030] In this embodiment, the cross-section of the lower end 111 of the slot is circular, and the cross-section of the upper end 112 of the slot is an inverted "eight" shape. The bottom rod 10 is cylindrical and is clamped at the lower end 111 of the slot. The lower end of the heat sink 2 can swing in the upper end 112 of the slot. The slope of the inverted "eight" shape of the upper end 112 of the slot can be adjusted according to specific circumstances, and the angle in the middle can limit the swing angle of the heat sink 2.

[0031] In this embodiment, a heat-conductive filler (not shown) is filled between the bottom bar 10 and the slot 11 . The heat-conductive filler not only conducts heat but also lubricates the contact surface between the bottom bar 10 and the slot 11 .

[0032] Specifically, the magnetic force generating device includes a magnetic force generator 5 fixed on the heat dissipation base plate 1, a magnetic core 6 arranged on the upper end of the magnetic force generator 5, a coil 7 sleeved on the magnetic core 6, and a magnet 8 arranged on the outside of the connecting rod 3 and opposite to the magnetic core 6.

[0033] In this embodiment, a spring sheet 9 is provided inside the connecting rod 3 . The spring sheet 9 is arranged opposite to the magnet 8 . The spring sheet 9 generates a reverse force to constrain the connecting rod 3 , thereby preventing the magnet 8 from colliding with the magnetic core 6 .

[0034] Specifically, two opposite sides of each heat sink 2 are fixedly connected to the connecting rod 3 through the connector 4 respectively.

[0035] In this embodiment, the connector 4 is "U"-shaped, the open end of the connector 4 clamps the heat sink 2, and the closed end of the connector 4 is fixed on the connecting rod 3. The closed end of the connector 4 can also be fixed on the connecting rod 3 through a circular shaft 12. The connector 4 receives the kinetic energy from the connecting rod 3 to drive the heat sink 2 to shake.

[0036] In this embodiment, the connecting rod 3 is enclosed in a rectangular shape, a plurality of connectors 4 are evenly arranged on the inner sides of two long sides of the connecting rod 3 , and two magnetic force generating devices are respectively located on the outer sides of two short sides of the connecting rod 3 .

[0037] In this embodiment, the connector 4 is a flexible member, which saves costs and reduces friction noise.

[0038] In summary, the above structure simplifies the heat sink components, reduces the volume, reduces resource waste, and improves user experience.

[0039] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be covered by the protection scope of the present application.

Claims

1. A movable fanless forced cooling radiator, characterized in that: Including heat sink; A plurality of heat sinks arranged in parallel and at intervals, each of the heat sinks being movably connected to the heat sink bottom plate; A connecting rod, the connecting rod is arranged around the plurality of heat sinks, and opposite sides of each heat sink are fixedly connected to the connecting rod respectively; and two magnetic force generating devices, the magnetic force generating devices being fixedly mounted on the heat dissipation bottom plate and respectively located outside the two ends of the connecting rod; The magnetic force generating device generates an alternating magnetic field after being pulse-powered, and the alternating magnetic field pushes and attracts the connecting rod, so that the connecting rod realizes horizontal reciprocating motion, and the connecting rod drives each of the heat sinks to swing.

2. The movable fanless forced cooling radiator according to claim 1, characterized in that: The upper surface of the heat dissipation bottom plate is provided with a plurality of slots, and the bottom of each heat dissipation fin is provided with a bottom rod, and the bottom rod cooperates with the slots.

3. The movable fanless forced cooling radiator according to claim 2, characterized in that: The lower end of the cross section of the slot is circular, and the upper end of the cross section is in an inverted "eight" shape. The bottom rod is cylindrical and is clamped at the lower end of the slot. The lower end of the heat sink can swing in the upper end of the slot.

4. The movable fanless forced cooling radiator according to claim 2, characterized in that: A heat-conducting filler is filled between the bottom rod and the slot.

5. A movable fanless forced cooling radiator according to any one of claims 1 to 4, characterized in that: The magnetic force generating device comprises a magnetic force generator fixed on the heat dissipation bottom plate, a magnetic core arranged on the upper end of the magnetic force generator, a coil sleeved on the magnetic core, and a magnet arranged on the outside of the connecting rod and opposite to the magnetic core.

6. The movable fanless forced cooling radiator according to claim 5, characterized in that: A spring sheet is arranged inside the connecting rod, and the spring sheet is arranged opposite to the magnet.

7. The movable fanless forced cooling radiator according to claim 1, characterized in that: The two opposite sides of each heat sink are fixedly connected to the connecting rod through connectors.

8. The movable fanless forced cooling radiator according to claim 7, characterized in that: The connector is "U" shaped, the open end of the connector clamps the heat sink, and the closed end of the connector is fixed on the connecting rod.

9. A movable fanless forced cooling radiator according to claim 7 or 8, characterized in that: The connecting rod is enclosed in a rectangular shape, a plurality of the connectors are evenly arranged on the inner sides of the two long sides of the connecting rod, and the two magnetic force generating devices are respectively located on the outer sides of the two short sides of the connecting rod.

10. The movable fanless forced cooling radiator according to claim 7, characterized in that: The connector is a flexible piece.

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