A heat pipe radiator combined with long and short pipes

Abstract

The present invention discloses a heat pipe radiator combined with long and short pipes, which includes a bottom plate. A heat dissipation fin assembly is fixed on the top of the bottom plate, and an installation groove is formed through the heat dissipation fin assembly. A long heat pipe and a short heat pipe are placed in the installation groove. A temperature sensor and a single-chip microcomputer are arranged on the bottom plate; it also includes an installation cavity, which is opened at both ends of the bottom plate, and two screw rods are vertically rotatably arranged in each installation cavity. Position adjusting components are arranged between the two movable seats and the long heat pipe and the short heat pipe. A guide shaft is embedded in the bottom plate through a motor; the installation plate is fixed outside the heat dissipation fin assembly, and a height adjusting component is arranged between the fan and the guide shaft. This heat pipe radiator combined with long and short pipes can switch between the long and short heat pipes for use, is suitable for stable heat dissipation in different temperature environments, and at the same time, the position of the fan is adjusted accordingly to further improve the heat dissipation effect.

Description

Technical Field

[0001] The present invention relates to the technical field of heat pipe radiators, and particularly to a heat pipe radiator combining long and short pipes. Background Art

[0002] A heat pipe radiator is a heat transfer element with extremely high thermal conductivity. It uses heat pipes as the main medium to transfer heat through the evaporation and condensation of liquid in a fully enclosed vacuum tube, and then cooperates with heat dissipation fins, fans and other tools for continuous heat dissipation. As the basic element of the heat pipe radiator, heat pipes of different length specifications have different performance characteristics. Long heat pipes have a large single-pipe heat transfer capacity, but it takes a long time for the heat pipe to reach thermal equilibrium; while short heat pipes have relatively small heat transfer capacity, but the heat pipe can quickly reach thermal equilibrium. The existing heat pipe radiators have the following problems when in use:

[0003] In the initial stage, the ambient temperature will have a certain impact on the use of the heat pipe radiator. In the case of a relatively low ambient temperature, due to the long travel of the working fluid in the pipe, the circulation of the working fluid in the pipe is too slow, and the heat pipe starts to preheat slowly, which easily causes the working fluid in the pipe to freeze at the condensation end of the heat pipe during startup, resulting in the drying up of the evaporation section, triggering the situation that the heat pipe cannot work properly and the heating surface overheats. The existing heat pipe radiators are not convenient to use the combination and switching of long and short pipes to dissipate heat according to the change of ambient temperature, which affects the heat dissipation effect. At the same time, for the use of long and short pipes, the position of the fan also needs to be switched correspondingly to avoid deviation of the heat dissipation area, which is also one of the reasons affecting the heat dissipation effect.

[0004] In view of the above problems, there is an urgent need for an innovative design based on the original heat pipe radiator. Summary of the Invention

[0005] The purpose of the present invention is to provide a heat pipe radiator combining long and short pipes to solve the problems in the above-mentioned background art that the existing heat pipe radiators are not convenient to use the combination and switching of long and short pipes to dissipate heat according to the change of ambient temperature, and at the same time, the position of the fan also needs to be switched correspondingly. The technical solution of the present invention provides a solution significantly different from the prior art for the technical problem that the prior art solution is too single.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A heat pipe radiator combining long and short pipes, including a bottom plate, a heat dissipation fin assembly is fixed on the top of the bottom plate, and an installation groove is formed through the heat dissipation fin assembly, and a long heat pipe and a short heat pipe are placed in the installation groove. A temperature sensor and a single-chip microcomputer are arranged on the bottom plate;

[0007] It further includes an installation cavity which is opened at both ends of the bottom plate. Two screws are vertically rotatably arranged in each installation cavity, and a movable seat is threadedly sleeved on each screw. Position adjustment components are provided between the two movable seats and the long heat pipe and the short heat pipe respectively, and the position adjustment components are used to switch the internal and external positions of the long heat pipe and the short heat pipe. A guide shaft is embedded in the bottom plate through a motor, and a vertical switching component is connected between the guide shaft and the screw, and the vertical switching component is used to drive the screw to rotate;

[0008] An installation plate which is fixed outside the heat dissipation fin assembly. A fan is connected through a third elastic telescopic rod in the cavity outside the installation plate. A height adjustment component is provided between the fan and the guide shaft, and the height adjustment component is used to adjust the height of the fan.

[0009] Preferably, the horizontal areas at the bottoms of the long heat pipe and the short heat pipe are both located in the installation cavity. When the short heat pipe is at the bottom of the installation cavity, its top position is inside the installation groove, and when the long heat pipe is at the top of the installation cavity, its top position is outside the installation groove.

[0010] Preferably, two screws are provided in each installation cavity, and the thread directions of the two screws are opposite, and the movable seats on the two screws do not interfere with each other inside and outside.

[0011] Preferably, the position adjustment component includes a telescopic sleeve which is fixed outside the movable seat. A telescopic head is connected in the telescopic sleeve through a first elastic telescopic rod, and the telescopic head is connected to the bottom ends of the long heat pipe and the short heat pipe. A contact plate is arranged through the middle cavity of the telescopic sleeve, and the contact plate is vertically fixed in the installation cavity.

[0012] Preferably, the contact plate is inclined in the installation cavity, and the contact plate abuts against the inner end of the telescopic head.

[0013] Preferably, the vertical switching component includes a first cam which is sleeved on the guide shaft. A vertical rod is arranged at the bottom of the first cam, and a rack is arranged at the bottom of the vertical rod. The rack and the vertical rod are in sliding contact in the inner cavity of the bottom plate. The rack moves horizontally in the bottom plate through a second elastic telescopic rod, and a gear roller is meshed with one side of the rack, and the gear roller is connected to the screw.

[0014] Preferably, the inner end of the rack and the bottom surface of the vertical rod are both designed as inclined surface structures, and the vertical movement of the vertical rod drives the rack to move horizontally.

[0015] Preferably, the height adjustment component includes an adjustment rod which is fixed at the protruding position of the fan. The bottom of the adjustment rod is located below the installation plate, and a second cam which is sleeved on the guide shaft is abutted against the bottom of the adjustment rod.

[0016] Preferably, the second cam rotates synchronously with the first cam, and when the first cam relaxes the vertical rod, the second cam resists and moves the adjusting rod upward.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention uses a long heat pipe and a short heat pipe in combination. When the ambient temperature is low, the short heat pipe is located at the lower inner side as a contact and heat-conducting medium. By taking advantage of its fast heat balance speed, the long heat pipe is prevented from freezing at the condensing end in conventional use. At the same time, when the ambient temperature rises, the positions of the long and short heat pipes are switched. The long heat pipe and the short heat pipe can be synchronously switched in the upper and lower positions and in the inner and outer positions by driving the guide shaft with a motor. The long heat pipe is used as a contact and heat-conducting medium. By taking advantage of its good heat transfer capacity, the stability of subsequent heat dissipation is ensured. This method not only ensures the alternating heat dissipation of the long heat pipe and the short heat pipe at different ambient temperatures, but also avoids the adverse effects of different ambient temperatures on the long heat pipe and the short heat pipe, thereby increasing their service life.

[0019] 2. In the present invention, during the switching process of the long heat pipe and the short heat pipe, the height of the fan can be switched synchronously, that is, when the short heat pipe is at the bottom and inside, the position of the fan will also be lower, so that the fan can be located in the center of the short heat pipes on both sides, which is convenient for timely exporting the heat from the short heat pipes and the heat dissipating fin assembly; when the long heat pipe is at the bottom and inside, the position of the fan will move upward, so that the fan can be located in the center of the long heat pipes on both sides, which is convenient for timely exporting the heat from the long heat pipes and the heat dissipating fin assembly, thereby ensuring the flexibility of use of the long heat pipes and the short heat pipes and further improving the heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the front cross-section structure of the present invention;

[0021] Figure 2 For the present invention Figure 1 The enlarged structural diagram at A in the middle;

[0022] Figure 3 It is a schematic diagram of the cross-sectional structure of the bottom plate of the present invention from top view;

[0023] Figure 4 For the present invention Figure 3 The enlarged structural diagram at B in the middle;

[0024] Figure 5 It is a schematic diagram of the side section structure of the present invention;

[0025] Figure 6 It is a schematic diagram of the second cam distribution structure of the present invention.

[0026] In the figure: 1, bottom plate; 2, heat dissipation fin assembly; 3, installation groove; 4, long heat pipe; 5, short heat pipe; 6, installation cavity; 7, screw rod; 8, movable seat; 91, telescopic sleeve; 92, first elastic telescopic rod; 93, telescopic head; 94, abutting plate; 10, guide shaft; 111, first cam; 112, vertical rod; 113, rack; 114, second elastic telescopic rod; 115, toothed roller; 12, mounting plate; 13, third elastic telescopic rod; 14, fan; 151, adjusting rod; 152, second cam. Specific implementation mode

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] Please refer to Figures 1 - 6 , the present invention provides a technical solution: a heat pipe radiator combining long and short pipes, including a bottom plate 1, a heat dissipation fin assembly 2, an installation groove 3, a long heat pipe 4, a short heat pipe 5, an installation cavity 6, a screw rod 7, a movable seat 8, a telescopic sleeve 91, a first elastic telescopic rod 92, a telescopic head 93, an abutting plate 94, a guide shaft 10, a first cam 111, a vertical rod 112, a rack 113, a second elastic telescopic rod 114, a toothed roller 115, a mounting plate 12, a third elastic telescopic rod 13, a fan 14, an adjusting rod 151 and a second cam 152.

[0029] Embodiment 1

[0030] Please refer to Figures 1 - 4 , a heat dissipation fin assembly 2 is fixed on the top of the bottom plate 1, and an installation groove 3 is formed through the heat dissipation fin assembly 2, and a long heat pipe 4 and a short heat pipe 5 are placed in the installation groove 3. A temperature sensor and a single-chip microcomputer are arranged on the bottom plate 1; installation cavities 6 are opened at both ends of the bottom plate 1, and two screw rods 7 are vertically rotatably arranged in each installation cavity 6, and movable seats 8 are sleeved on the screw rods 7 in a threaded manner. Position adjusting components are arranged between the two movable seats 8 and the long heat pipe 4 and the short heat pipe 5, and the position adjusting components are used for switching the internal and external positions of the long heat pipe 4 and the short heat pipe 5. A guide shaft 10 is embedded in the bottom plate 1 through a motor, and a vertical switching component is connected between the guide shaft 10 and the screw rod 7, and the vertical switching component is used for driving the screw rod 7 to rotate;

[0031] The bottom transverse regions of the long heat pipe 4 and the short heat pipe 5 are both located within the installation cavity 6. When the short heat pipe 5 is at the bottom of the installation cavity 6, its top position is inside the installation groove 3, and when the long heat pipe 4 is at the top of the installation cavity 6, its top position is outside the installation groove 3. There are two screws 7 in each installation cavity 6, and the thread directions of the two screws 7 are opposite, and the movable seats 8 on the two screws 7 are arranged without interference inside and outside. The position adjustment assembly includes a telescopic sleeve 91, and the telescopic sleeve 91 is fixed to the outside of the movable seat 8. A telescopic head 93 is connected inside the telescopic sleeve 91 through a first elastic telescopic rod 92, and the telescopic head 93 is connected to the bottom ends of the long heat pipe 4 and the short heat pipe 5. A contact plate 94 is arranged through the middle cavity of the telescopic sleeve 91, and the contact plate 94 is vertically fixed within the installation cavity 6. The contact plate 94 is inclined within the installation cavity 6, and the contact plate 94 abuts against the inner end of the telescopic head 93. The vertical switching assembly includes a first cam 111, and the first cam 111 is sleeved on the guide shaft 10. A vertical rod 112 is arranged at the bottom of the first cam 111, and a rack 113 is arranged at the bottom of the vertical rod 112. The rack 113 and the vertical rod 112 fit and slide within the inner cavity of the bottom plate 1. The rack 113 moves horizontally within the bottom plate 1 through a second elastic telescopic rod 114, and one side of the rack 113 meshes with a gear roller 115, and the gear roller 115 is connected to the screw 7. The inner end of the rack 113 and the bottom surface of the vertical rod 112 are both designed as inclined surface structures, and the vertical movement of the vertical rod 112 drives the horizontal movement of the rack 113.

[0032] According to the working temperature, the long heat pipe 4 and the short heat pipe 5 are switched in their up and down positions and inside and outside positions. When the temperature is relatively low, the short heat pipe 5 provides the main heat conduction, taking advantage of its fast heat balance speed to avoid the situation where the working medium of the long heat pipe 4 freezes at the condensation end. When the temperature rises, the long heat pipe 4 provides the main heat conduction, taking advantage of its good heat transfer ability to ensure the stability of subsequent heat dissipation.

[0033] Embodiment 2

[0034] On the basis of Embodiment 1, please refer to Figure 1 and Figures 5 - 6 The mounting plate 12 is fixed to the outside of the heat dissipation fin assembly 2, and a fan 14 is connected inside the outer cavity of the mounting plate 12 through a third elastic telescopic rod 13. A height adjustment assembly is arranged between the fan 14 and the guide shaft 10, and the height adjustment assembly is used to adjust the height of the fan 14. The height adjustment assembly includes an adjustment rod 151, and the adjustment rod 151 is fixed at the protruding position of the fan 14. The bottom of the adjustment rod 151 is located below the mounting plate 12, and the bottom of the adjustment rod 151 abuts against a second cam 152, and the second cam 152 is sleeved on the guide shaft 10. The second cam 152 rotates synchronously with the first cam 111, and when the first cam 111 relaxes the vertical rod 112, the second cam 152 abuts against the adjustment rod 151 and moves it upward.

[0035] During the process of switching the positions of the long heat pipe 4 and the short heat pipe 5, the height of the fan 14 can be synchronously switched, so that the fan 14 can perform centralized heat dissipation for both the short heat pipe 5 and the long heat pipe 4, further improving the heat dissipation efficiency.

[0036] Working principle: When using the heat pipe radiator combined with long and short pipes, first, at startup, the ambient temperature is sensed by the temperature sensor on the bottom plate 1. If the temperature is low, the short heat pipe 5 is temporarily kept in the lower and inner positions. Utilizing the advantage of the fast heat balance speed of the short heat pipe 5, the heat is conducted to the heat dissipation fin assembly 2 through the contact between the short heat pipe 5 and the bottom surface of the installation cavity 6, and the heat is exported by the fan 14 located at a lower position. After the ambient temperature rises, the motor is controlled by the single-chip microcomputer to rotate. The motor drives the guide shaft 10 to rotate, making the protruding part of the first cam 111 gradually move away from the vertical rod 112. At this time, under the action of the second elastic telescopic rod 114, the second elastic telescopic rod 114 pushes the rack 113 to move horizontally, lifting the vertical rod 112, facilitating the subsequent downward movement of the vertical rod 112 pushed by the first cam 111. The horizontal movement of the rack 113 drives the screw rod 7 to rotate through meshing with the gear roller 115. The two screw rods 7 on one side drive the two movable seats 8 thereon to move towards each other. The movable seat 8 drives the long heat pipe 4 and the short heat pipe 5 to move towards each other through the corresponding telescopic sleeve 91 and telescopic head 93. At the same time, guided by the first elastic telescopic rod 92 and the inclined contact plate 94, when the long heat pipe 4 moves downward, it can move inward, and when the short heat pipe 5 moves upward, it moves outward, realizing the switching of the upper and lower positions and the inner and outer positions of the long heat pipe 4 and the short heat pipe 5. The bottom of the long heat pipe 4 contacts the bottom surface of the installation cavity 6, and the long heat pipe 4 is located at the inner side of the heat dissipation fin assembly 2, giving full play to the advantage of the good heat transfer ability of the long heat pipe 4 to meet the heat dissipation requirements at higher temperatures;

[0037] On this basis, the guide shaft 10 drives the second cam 152 to rotate. The second cam 152 abuts against the adjusting rod 151, pushing the adjusting rod 151 and the fan 14 to move upward, so that the fan 14 can perform centralized heat dissipation for the long heat pipe 4.

[0038] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. In the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 construed as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A heat pipe radiator combining long and short pipes, comprising a bottom plate (1), a heat dissipation fin assembly (2) is fixed on the top of the bottom plate (1), and an installation groove (3) is formed through the heat dissipation fin assembly (2), and a long heat pipe (4) and a short heat pipe (5) are placed in the installation groove (3). A temperature sensor and a single-chip microcomputer are arranged on the bottom plate (1); It is characterized in that: It further includes an installation cavity (6), the installation cavity (6) is opened at both ends of the bottom plate (1), and two screw rods (7) are vertically rotatably arranged in each installation cavity (6), and a movable seat (8) is sleeved on the screw rod (7) in a threaded manner. Position adjusting components are arranged between the two movable seats (8) and the long heat pipe (4) and the short heat pipe (5), and the position adjusting components are used to switch the internal and external positions of the long heat pipe (4) and the short heat pipe (5). A guide shaft (10) is embedded and installed in the bottom plate (1) through a motor, and a vertical switching component is connected between the guide shaft (10) and the screw rod (7), and the vertical switching component is used to drive the screw rod (7) to rotate; An installation plate (12), the installation plate (12) is fixed outside the heat dissipation fin assembly (2), and a fan (14) is connected through a third elastic telescopic rod (13) in the outer cavity of the installation plate (12). A height adjusting component is arranged between the fan (14) and the guide shaft (10), and the height adjusting component is used to adjust the height of the fan (14).

2. The heat pipe radiator combined with long and short pipes according to claim 1, wherein: The bottom transverse regions of the long heat pipe (4) and the short heat pipe (5) are both located in the installation cavity (6). When the short heat pipe (5) is at the bottom of the installation cavity (6), its top position is inside the installation groove (3), and when the long heat pipe (4) is at the top of the installation cavity (6), its top position is outside the installation groove (3).

3. The heat pipe radiator with combined long and short pipes according to claim 1, characterized in that: Two screw rods (7) are arranged in each installation cavity (6), and the two screw rods (7) have opposite thread directions, and the movable seats (8) on the two screw rods (7) do not interfere with each other inside and outside.

4. A heat pipe radiator with combined long and short pipes according to claim 1, characterized in that: The position adjusting component includes a telescopic sleeve (91), and the telescopic sleeve (91) is fixed on the outer side of the movable seat (8). A telescopic head (93) is connected in the telescopic sleeve (91) through a first elastic telescopic rod (92), and the telescopic head (93) is connected to the bottom ends of the long heat pipe (4) and the short heat pipe (5). A contact plate (94) is arranged through the middle cavity of the telescopic sleeve (91), and the contact plate (94) is vertically fixed in the installation cavity (6).

5. The heat pipe radiator with combined long and short pipes according to claim 4, characterized in that: The contact plate (94) is inclined in the installation cavity (6), and the contact plate (94) contacts the inner end of the telescopic head (93).

6. The heat pipe radiator combined with long and short pipes according to claim 1, wherein: The vertical switching assembly comprises a first cam (111), and the first cam (111) is sleeved on the guide shaft (10), a vertical rod (112) is arranged at the bottom of the first cam (111), and a rack (113) is arranged at the bottom of the vertical rod (112), and the rack (113) and the vertical rod (112) are fitted and slid in the internal cavity of the bottom plate (1), the rack (113) moves laterally in the bottom plate (1) through a second elastic telescopic rod (114), and a toothed roller (115) is meshed on one side of the rack (113), and the toothed roller (115) is connected to the screw rod (7).

7. The heat pipe radiator with combined long and short pipes according to claim 6, characterized in that: The inner end of the rack (113) and the bottom surface of the vertical rod (112) are both designed as inclined structures, and the vertical movement of the vertical rod (112) drives the rack (113) to move horizontally.

8. A heat pipe radiator with combined long and short pipes according to claim 7, characterized in that: The height adjustment assembly comprises an adjustment rod (151), and the adjustment rod (151) is fixed at a raised position of the fan (14), the bottom of the adjustment rod (151) is located below the mounting plate (12), and a second cam (152) is disposed at the bottom of the adjustment rod (151), and the second cam (152) is sleeved on the guide shaft (10).

9. The heat pipe radiator combined with long and short pipes according to claim 8, wherein: The second cam (152) rotates synchronously with the first cam (111), and when the first cam (111) relaxes the vertical rod (112), the second cam (152) resists the adjustment rod (151) and moves upward.

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