Long pipe and short pipe combined heat pipe radiator

Abstract

The invention discloses a long and short pipe combined heat pipe radiator which comprises a bottom plate, a radiating fin assembly is fixed to the top of the bottom plate, a mounting groove is formed in the radiating fin assembly in a penetrating mode, a long heat pipe and a short heat pipe are placed in the mounting groove, and a temperature sensor and a single chip microcomputer are arranged on the bottom plate; the heat exchanger further comprises mounting cavities, the mounting cavities are formed in the two ends of the bottom plate, two screw rods are vertically and rotationally arranged in each mounting cavity, position adjusting assemblies are arranged between the two movable seats and the long heat pipes and between the two movable seats and the short heat pipes, and guide shafts are mounted in the bottom plate in an embedded mode through motors. The mounting plate is fixed outside the radiating fin assembly, and a height adjusting assembly is arranged between the fan and the guide shaft. According to the heat pipe radiator combining the long and short pipes, the long and short heat pipes can be switched for use, the radiator is suitable for stable heat dissipation in different temperature environments, meanwhile, the position of the fan is adjusted, and the heat dissipation effect is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of heat pipe radiators, in particular 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 and transfers heat through the evaporation and condensation of liquid in a fully enclosed vacuum tube. It is combined with cooling fins and fans to continuously dissipate heat. Heat pipes are the basic elements of heat pipe radiators. Heat pipes of different lengths have different performance characteristics. Long heat pipes have large single-tube heat transfer capacity, but the heat pipe takes a long time to reach thermal stability. Short heat pipes have relatively small heat transfer capacity, but they can quickly reach thermal stability. 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. When the ambient temperature is low, due to the long working fluid travel in the tube, the working fluid circulation in the tube is too slow, and the heat pipe starts and preheats slowly, which can easily cause the working fluid in the tube to freeze at the condensation end of the heat pipe during the startup process, causing the evaporation section to dry up, causing the heat pipe to not work normally and the heating surface to overheat. The existing heat pipe radiator is not convenient to use a combination of long and short tubes and switching to dissipate heat according to changes in ambient temperature, which affects the heat dissipation effect. At the same time, for the use of long and short tubes, the position of the fan also needs to be switched accordingly to avoid deviations in the heat dissipation area, which is also one of the reasons that affect the heat dissipation effect.

[0004] In view of the above problems, it is urgent to carry out 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 with a combination of long and short tubes to solve the problem that the existing heat pipe radiator proposed in the above background technology is not convenient to use the combination and switching of long and short tubes to dissipate heat according to changes in ambient temperature, and the position of the fan also needs to be switched accordingly. The technical solution of the present invention aims at the technical problem that the existing technical solution is too single, and provides a solution that is significantly different from the existing technology.

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

[0007] It also includes an installation cavity, which is opened at both ends of the bottom plate, and two screws are vertically rotated in each installation cavity, and a movable seat is provided on the threaded sleeve of the screw, and position adjustment components are provided between the two movable seats and the long heat pipe and the short heat pipe, and the position adjustment component is used to switch the inner and outer positions of the long heat pipe and the short heat pipe, and 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] A mounting plate is fixed on the outside of the heat dissipation fin assembly, and a fan is connected to the cavity outside the mounting plate through a third elastic telescopic rod, a height adjustment component is arranged between the fan and the guide shaft, and the height adjustment component is used to adjust the height of the fan.

[0009] Preferably, the bottom lateral areas of the long heat pipe and the short heat pipe are both located in the mounting cavity, and when the short heat pipe is at the bottom of the mounting cavity, its top position is on the inner side of the mounting groove, and when the long heat pipe is at the top of the mounting cavity, its top position is on the outer side of the mounting groove.

[0010] Preferably, two screw rods are provided in each of the installation cavities, and the thread directions of the two screw rods are opposite, and the movable seats on the two screw rods are arranged inside and outside without interfering with each other.

[0011] Preferably, the position adjustment assembly includes a telescopic sleeve, and the telescopic sleeve is fixed on the outside of the movable seat, a telescopic head is connected to the inside of 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 resistance plate is arranged through the middle cavity of the telescopic sleeve, and the resistance plate is vertically fixed in the installation cavity.

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

[0013] Preferably, the vertical switching assembly includes a first cam, and the first cam is sleeved on the guide shaft, a vertical rod is provided at the bottom of the first cam, and a rack is provided at the bottom of the vertical rod, and the rack and the vertical rod slide in fit in the internal cavity of the base plate, the rack moves laterally in the base plate through the second elastic telescopic rod, and a gear roller is engaged on 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 structures, and the vertical movement of the vertical rod drives the rack to move horizontally.

[0015] Preferably, the height adjustment assembly includes an adjustment rod, and the adjustment rod is fixed at a raised position of the fan, the bottom of the adjustment rod is located below the mounting plate, and a second cam is disposed in contact with the bottom of the adjustment rod, and the second cam is sleeved on the guide shaft.

[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 sink fin assembly; 3. mounting groove; 4. long heat pipe; 5. short heat pipe; 6. mounting cavity; 7. screw; 8. movable seat; 91. telescopic sleeve; 92. first elastic telescopic rod; 93. telescopic head; 94. contact plate; 10. guide shaft; 111. first cam; 112. vertical rod; 113. rack; 114. second elastic telescopic rod; 115. gear roller; 12. mounting plate; 13. third elastic telescopic rod; 14. fan; 151. adjustment rod; 152. second cam. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

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

[0029] Embodiment 1

[0030] See also Figure 1-Figure 4 , a heat dissipation fin assembly 2 is fixed on the top of the bottom plate 1, and a mounting groove 3 is provided through the heat dissipation fin assembly 2, and a long heat pipe 4 and a short heat pipe 5 are placed in the mounting groove 3, and a temperature sensor and a single-chip microcomputer are arranged on the bottom plate 1; a mounting cavity 6 is provided at both ends of the bottom plate 1, and two screws 7 are arranged vertically rotating in each mounting cavity 6, and a movable seat 8 is provided on the threaded sleeve of the screw 7, and position adjustment components are arranged between the two movable seats 8 and the long heat pipe 4 and the short heat pipe 5, and the position adjustment components are used to switch the inner and outer 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 7, and the vertical switching component is used to drive the screw 7 to rotate;

[0031] The bottom lateral areas of the long heat pipe 4 and the short heat pipe 5 are both located in the installation cavity 6, and when the short heat pipe 5 is at the bottom of the installation cavity 6, its top position is on the inner side of the installation groove 3, and when the long heat pipe 4 is at the top of the installation cavity 6, its top position is on the outer side of 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 component includes a telescopic sleeve 91, and the telescopic sleeve 91 is fixed to the outer side of the movable seat 8, a telescopic head 93 is connected to 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, and a resistance plate 94 is arranged through the cavity in the middle of the telescopic sleeve 91, and the resistance plate 94 is vertically fixed to the installation cavity. The mounting cavity 6; the abutment plate 94 is tiltedly arranged in the mounting cavity 6, and the abutment 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, and the rack 113 and the vertical rod 112 are fitted and slid in the internal cavity of the bottom plate 1, and the rack 113 moves laterally in the bottom plate 1 through the 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 7; 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 laterally;

[0032] According to the working temperature, the long heat pipe 4 and the short heat pipe 5 are switched between the upper and lower positions and the inner and outer positions. When the temperature is low, the short heat pipe 5 provides the main heat conduction, and uses its advantage of fast thermal equilibrium speed to avoid the situation where the working medium in the long heat pipe 4 is frozen at the condensation end. When the temperature rises, the long heat pipe 4 provides the main heat conduction, and uses its advantage of good heat transfer capacity to ensure the stability of subsequent heat dissipation.

[0033] Embodiment 2

[0034] Based on Example 1, please refer to Figure 1 and Figure 5-Figure 6 , the mounting plate 12 is fixed to the outside of the heat dissipation fin assembly 2, and the fan 14 is connected to the outer cavity of the mounting plate 12 through the third elastic telescopic rod 13, and a height adjustment component is provided between the fan 14 and the guide shaft 10, and the height adjustment component is used to adjust the height of the fan 14; the height adjustment component includes an adjustment rod 151, and the adjustment rod 151 is fixed at the raised 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 is provided with a second cam 152 in contact, 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 moves upward against the adjustment rod 151;

[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 switched synchronously, 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 with a combination of long and short pipes, first at startup, the ambient temperature is sensed by the temperature sensor of the bottom plate 1. If the temperature is low, the short heat pipe 5 is temporarily kept at the bottom and inside, and the advantage of the short heat pipe 5's fast thermal equilibrium speed is utilized. The short heat pipe 5 contacts the bottom surface of the installation cavity 6 to conduct the heat to the heat dissipation fin assembly 2, and the heat is exported by the fan 14 located at the bottom. After the ambient temperature rises, the motor is controlled to rotate by the single-chip microcomputer, and the motor drives the guide shaft 10 to rotate, so that the protruding part of the first cam 111 gradually moves 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, and lifts the vertical rod 112, which is convenient for the subsequent vertical rod 11 2 is pushed downward by the first cam 111, and the lateral movement of the rack 113 drives the screw 7 to rotate by meshing with the gear roller 115. The two screws 7 on one side drive the two movable seats 8 thereon to move in opposite directions. The movable seats 8 drive the long heat pipe 4 and the short heat pipe 5 to move in opposite directions through the corresponding telescopic sleeve 91 and the telescopic head 93. At the same time, guided by the first elastic telescopic rod 92 and the inclined contact plate 94, the long heat pipe 4 can move inward when moving downward, and the short heat pipe 5 can move outward when moving upward, so as to realize 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, so as to give full play to the advantage of the good heat transfer capacity of the long heat pipe 4 and meet the heat dissipation requirements at higher temperatures;

[0037] On this basis, the guide shaft 10 drives the second cam 152 to rotate, and the second cam 152 contacts the adjustment rod 151, pushing the adjustment rod 151 and the fan 14 upward, so that the fan 14 can centrally dissipate heat for the long heat pipe 4.

[0038] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. In the description of the present invention, unless otherwise specified, "multiple" means two or more; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does 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 cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" 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 ordinary technicians in this field, 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 aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat pipe radiator with a combination of long and short pipes, comprising a base plate (1), a heat dissipation fin assembly (2) being fixed on the top of the base plate (1), a mounting groove (3) being provided through the heat dissipation fin assembly (2), a long heat pipe (4) and a short heat pipe (5) being placed in the mounting groove (3), and a temperature sensor and a single-chip microcomputer being arranged on the base plate (1); Features: It also includes an installation cavity (6), the installation cavity (6) is opened at both ends of the base plate (1), and two screw rods (7) are vertically rotatably arranged in each installation cavity (6), and a movable seat (8) is threadedly sleeved on the screw rod (7), and position adjustment components are arranged between the two movable seats (8) and the long heat pipe (4) and the short heat pipe (5), and the position adjustment components are used to switch the inner and outer positions of the long heat pipe (4) and the short heat pipe (5), and a guide shaft (10) is embedded in the base 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; A mounting plate (12) is fixed to the outside of the heat dissipation fin assembly (2), and a fan (14) is connected to the cavity outside the mounting plate (12) via a third elastic telescopic rod (13), and a height adjustment component is provided between the fan (14) and the guide shaft (10), and the height adjustment component is used to adjust the height of the fan (14).

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

3. The heat pipe radiator with a combination of long and short pipes according to claim 1, characterized in that: Two screw rods (7) are arranged in each installation cavity (6), and the thread directions of the two screw rods (7) are opposite, and the movable seats (8) on the two screw rods (7) are arranged inside and outside without interfering with each other.

4. The heat pipe radiator with a combination of long and short pipes according to claim 1, characterized in that: The position adjustment component comprises a telescopic sleeve (91), and the telescopic sleeve (91) is fixed on the outside of the movable seat (8), a telescopic head (93) is connected to the inside of the telescopic sleeve (91) via 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), and a resistance plate (94) is arranged through the middle cavity of the telescopic sleeve (91), and the resistance plate (94) is vertically fixed in the installation cavity (6).

5. The heat pipe radiator with a combination of long and short pipes according to claim 4, characterized in that: The abutment plate (94) is arranged obliquely in the installation cavity (6), and the abutment plate (94) abuts against the inner end of the telescopic head (93).

6. The heat pipe radiator with a combination of long and short pipes according to claim 1, characterized in that: 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 a combination of 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. The heat pipe radiator with a combination of 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 combining long and short pipes according to claim 8, characterized in that: 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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