Efficient and energy-saving heat dissipation device for electrical automation equipment

Abstract

The invention discloses an efficient and energy-saving heat dissipation device for electrical automation equipment. The efficient and energy-saving heat dissipation device comprises a base; the inner cylinder is fixed to the base, the outer cylinder is coaxially arranged on the outer side of the inner cylinder in a sleeving mode, a cavity is formed between the inner cylinder and the outer cylinder, and the two ends of the inner cylinder and the two ends of the outer cylinder are rotationally connected through sealing rings; the water inlet pipe penetrates through the outer cylinder and extends into the cavity; the central tube is fixed to the center of the inner cylinder, the side tubes are distributed in the axial direction of the inner cylinder, the side tubes are distributed in a radial mode around the central tube, the two ends of each side tube penetrate into the central tube and the cavity respectively, and inner cooling fins are fixed to the two sides of each side tube respectively; an inlet of the water pump is communicated with the central pipe, and an outlet of the water pump is connected with a water outlet pipe; the fan is arranged at one end of the inner cylinder away from the water pump; the inner air inlet and the outer air inlet are formed in the side walls of the ends, close to the water pump, of the inner cylinder and the outer cylinder, and the inner air inlet and the outer air inlet are located on the outer side of the sealing ring; the LED lamp is high in heat dissipation efficiency and good in energy-saving performance.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical equipment, and particularly to a heat dissipation device for an efficient and energy-saving electrical automation device. Background Art

[0002] With the advancement of industrial automation, the power density and operating load of electrical automation devices (such as frequency converters, servo drivers, PLC controllers, etc.) have increased significantly, and the heat generated by the internal electronic components has shown exponential growth. Research shows that for every 10°C increase in the device temperature rise above the rated value, its lifespan will be shortened by 50%, and the failure rate will increase by 30%. Therefore, the performance of the heat dissipation device directly affects the reliability, energy efficiency, and lifespan of the device operation.

[0003] Currently, the mainstream heat dissipation technologies mainly include: forced air cooling technology and liquid cooling circulation technology. The difference lies in directly dissipating heat from the electronic components and transferring the heat to the external heat dissipation device through the coolant for heat dissipation. Liquid cooling circulation heat dissipation can reduce the heat accumulation in the cabinet and has the advantage of small occupied volume. Among them, the heat dissipation device needs to drive air to flow through the surface of the heat sink by an axial flow fan and dissipate heat using the principle of convective heat transfer. The heat dissipation efficiency is limited by the air thermal conductivity. Under high load, it relies on multiple fans in parallel, resulting in high noise and high energy consumption ratio. Moreover, the problem of dust accumulation on the heat sink is serious, and the traditional fins are easily blocked, and the heat dissipation efficiency decreases after long-term operation.

[0004] Therefore, it is necessary to provide a heat dissipation device for an efficient and energy-saving electrical automation device to solve the problems raised in the above background art. Summary of the Invention

[0005] To achieve the above object, the present invention provides the following technical solution: A heat dissipation device for an efficient and energy-saving electrical automation device, comprising:

[0006] A base;

[0007] An inner cylinder fixed on the base, and an outer cylinder coaxially sleeved outside the inner cylinder. A cavity is formed between the inner cylinder and the outer cylinder, and both ends of the inner cylinder and the outer cylinder are rotationally connected by a sealing ring;

[0008] A water inlet pipe passing through the outer cylinder and extending into the cavity;

[0009] A central pipe fixed at the center of the inner cylinder, and several circles of side pipes axially distributed along the inner cylinder. Each side pipe is arranged radially around the central pipe. Both ends of each side pipe respectively penetrate into the central pipe and the cavity, and inner heat sinks are fixed on both sides of each side pipe;

[0010] A water pump fixed at one end of the inner cylinder. The inlet of the water pump is communicated with the central pipe, and the outlet is connected to a water outlet pipe;

[0011] A fan arranged at the end of the inner cylinder away from the water pump;

[0012] An inner air inlet and an outer air inlet are provided on the side walls of the inner cylinder and the outer cylinder near one end of the water pump, and the inner air inlet and the outer air inlet are located outside the sealing ring.

[0013] Further, as a preference, the side pipe is rotatably arranged between the central pipe and the inner cylinder, and a bevel gear is fixed on a section of the side pipe in the cavity;

[0014] A plurality of bevel gear rings are fixed on the inner wall of the outer cylinder, and each bevel gear ring meshes with each bevel gear respectively.

[0015] Further, as a preference, a plurality of sliding rods distributed circumferentially penetrate through one end of the inner cylinder near the water pump in a slidable manner, each sliding rod corresponds to the position of each row of inner heat dissipation fins, and one end of each sliding rod outside the inner cylinder is commonly connected to a connecting ring;

[0016] Two scraping strips are fixed at one end of each sliding rod inside the inner cylinder, and the two scraping strips are distributed in a V shape, with the opening facing away from the side of the water pump.

[0017] Further, as a preference, a rack is fixed below one of the sliding rods, a driving gear is arranged inside the base, and the driving gear meshes with the rack.

[0018] Further, as a preference, an inner dust outlet is formed at the bottom of the inner cylinder, a sealing strip fitting the inner cylinder is fixed on the inner wall of the bottom of the outer cylinder, and an outer dust outlet is formed on one side of the sealing strip.

[0019] Further, as a preference, a detachable dust collection box is arranged inside the base corresponding to the position below the outer cylinder, and a filter screen is arranged on the side of the dust collection box.

[0020] Further, as a preference, a telescopic cylinder is hinged between the outer cylinder and the base.

[0021] Further, as a preference, a plurality of outer heat dissipation fins are fixedly distributed on the outer wall above the outer cylinder.

[0022] Further, as a preference, the inner cylinder is provided with a temperature sensor and a controller electrically connected to the temperature sensor and the exhaust fan.

[0023] Further, as a preference, an electric valve is arranged between the water pump and the water outlet pipe.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] In the present invention, the cavity formed by the inner cylinder and the outer cylinder and the radial pipeline composed of the central pipe and the side pipes can achieve dual heat dissipation through passive heat dissipation by the outer heat sinks and active heat dissipation by the inner heat sinks respectively. The radially distributed side pipes cooperate with the inner heat sinks with adjustable angles to form an asymmetric flow channel, which can generate a directional eddy current, improving the heat dissipation efficiency and energy-saving performance.

[0026] In the present invention, the V-shaped scraping strip cooperates with reciprocating mechanical scraping and reverse air flow scouring to remove the dust particles on the inner heat sinks, avoiding the reduction of heat dissipation efficiency caused by the accumulation of dust on the inner heat sinks. The inner sealed dust removal channel can align the dust outlet and the dust collection box, and can achieve dust collection during the cleaning cycle to ensure that no secondary pollution occurs during operation. Description of the Drawings

[0027] Figure 1 is a schematic diagram of the overall structure of a heat dissipation device for an efficient energy-saving electrical automation device;

[0028] Figure 2 is a schematic diagram of the internal structure of a heat dissipation device for an efficient energy-saving electrical automation device;

[0029] Figure 3 is a schematic diagram of the sectional structure of a heat dissipation device for an efficient energy-saving electrical automation device;

[0030] Figure 4 is a schematic diagram of the cross-sectional structure at the inner heat sinks;

[0031] Figure 5 is a schematic diagram of the cross-sectional structure at the scraping strip;

[0032] In the figure: 1, base; 2, inner cylinder; 21, cavity; 22, inner air inlet; 23, inner dust outlet; 3, outer cylinder; 31, water inlet pipe; 32, outer air inlet; 33, outer heat sinks; 34, sealing strip; 35, outer dust outlet; 36, bevel gear ring; 4, central pipe; 5, side pipes; 6, inner heat sinks; 7, water pump; 71, water outlet pipe; 8, dust collection box; 9, bevel gear; 10, telescopic cylinder; 11, scraping strip; 12, sliding rod; 13, rack; 14, driving gear; 15, fan; 16, connecting ring. Detailed Embodiments

[0033] Please refer to Figures 1 - 5 , in the embodiment of the present invention, a heat dissipation device for an efficient energy-saving electrical automation device includes:

[0034] Base 1;

[0035] The inner cylinder 2 fixed on the base 1 and the outer cylinder 3 coaxially sleeved outside the inner cylinder 2, a cavity 21 is formed between the inner cylinder 2 and the outer cylinder 3, and both ends of the inner cylinder 2 and the outer cylinder 3 are rotationally connected through a sealing ring;

[0036] The water inlet pipe 31 that penetrates through the outer cylinder 3 and extends into the cavity 21;

[0037] The central pipe 4 fixed at the center of the inner cylinder 2, and several circles of side pipes 5 axially distributed along the inner cylinder 2. Each side pipe 5 is arranged radially around the central pipe 4. Both ends of each side pipe 5 penetrate into the central pipe 4 and the cavity 21 respectively, and inner heat dissipation fins 6 are fixed on both sides of each side pipe 5;

[0038] The water pump 7 fixed at one end of the inner cylinder 2. The inlet of the water pump 7 is communicated with the central pipe 4, and the outlet is connected to the water outlet pipe 71;

[0039] The fan 15 arranged at the end of the inner cylinder 2 far from the water pump 7;

[0040] The inner air inlet 22 and the outer air inlet 32 opened on the side walls of the inner cylinder 2 and the outer cylinder 3 near the water pump 7 end. The inner air inlet 22 and the outer air inlet 32 are located outside the sealing ring.

[0041] That is to say, the water inlet pipe 31 and the water outlet pipe 71 are respectively connected to the water outlet end and the water inlet end of the coolant of the electrical equipment. The high-temperature coolant enters the cavity 21 from the water inlet pipe 31, and passes through each side pipe 5 under the action of the water pump 7. After transferring the heat to the inner heat dissipation fins 6, it is discharged from the central pipe 4 by the water pump 7 through the water outlet pipe 71. And the outside air is passed through the outer air inlet 32 and the inner air inlet 22 by the fan 15 to dissipate heat from each inner heat dissipation fin 6 and then discharged. The air can evenly contact each inner heat dissipation fin 6 in the inner cylinder 2, thereby improving the air heat conduction efficiency.

[0042] In this embodiment, the side pipe 5 is rotatably arranged between the central pipe 4 and the inner cylinder 2, and a bevel gear 9 is fixed at a section of the side pipe 5 in the cavity 21;

[0043] Multiple circles of bevel gear rings 36 are fixed on the inner wall of the outer cylinder 3, and each circle of bevel gear rings 36 meshes with each circle of bevel gears 9 respectively.

[0044] By rotating the outer cylinder 3, it can drive each side pipe 5 to rotate synchronously, thereby adjusting the inclination angle of the inner heat dissipation fins 6.

[0045] In this embodiment, multiple circumferentially distributed sliding rods 12 penetrate through the end of the inner cylinder 2 near the water pump 7 in a slidable manner. Each sliding rod 12 corresponds to the position of each row of inner heat dissipation fins 6, and one end of each sliding rod 12 outside the inner cylinder 2 is commonly connected to the connecting ring 16;

[0046] Two scraping strips 11 are fixed at one end of each sliding rod 12 inside the inner cylinder 2. The two scraping strips 11 are distributed in a V shape, and the opening faces away from the side of the water pump 7.

[0047] Among them, the scraping strips 11 are made of elastic materials. When each of the inner heat dissipation fins 6 rotates to an angle perpendicular to the cross-section of the inner cylinder 2, the two scraping strips 11 distributed in a V shape are attached to both sides of each column of inner heat dissipation fins 6 by reciprocally sliding the sliding rod 12, so as to scrape off the dust on both sides of the inner heat dissipation fins 6.

[0048] In this embodiment, a rack 13 is fixed below one of the sliding rods 12, and a driving gear 14 is arranged in the base 1. The driving gear 14 meshes with the rack 13.

[0049] The driving gear 14 can drive the rack 13 to slide, and under the action of the connecting ring 16, each sliding rod 12 will slide synchronously.

[0050] In this embodiment, an inner dust outlet 23 is formed at the bottom of the inner cylinder 2, and a sealing strip 34 attached to the inner cylinder 2 is fixed to the inner wall of the bottom of the outer cylinder 3. An outer dust outlet 35 is formed on one side of the sealing strip 34.

[0051] In this embodiment, a detachable dust collection box 8 is arranged in the base 1 at a position corresponding to the lower part of the outer cylinder 3. A filter screen is arranged on the side of the dust collection box 8.

[0052] That is to say, when the sealing strip 34 overlaps with the inner dust outlet 23, the outer dust outlet 35 can be sealed to prevent the dust in the dust collection box 8 from being sucked into the inner cylinder 2, and at the same time ensure the sealing of the cavity 21; when the outer cylinder 3 rotates to an angle where the inner heat dissipation fins 6 are perpendicular to the cross-section of the inner cylinder 2, the outer dust outlet 35 overlaps with the inner dust outlet 23. At this time, when the sliding rod 12 and the scraping strip 11 clean the inner heat dissipation fins 6, the dust can be discharged from the inner dust outlet 23 and the outer dust outlet 35 into the dust collection box 8;

[0053] In addition, when the outer cylinder 3 rotates to an angle where the outer dust outlet 35 overlaps with the inner dust outlet 23, the outer air inlet 32 and the inner air inlet 22 are staggered. At this time, the fan 15 rotates reversely to blow air into the inner cylinder 2, which can drive the dust in the inner cylinder 2 to be discharged from the inner dust outlet 23 and the outer dust outlet 35 into the dust collection box 8.

[0054] In this embodiment, a telescopic cylinder 10 is hinged between the outer cylinder 3 and the base 1. The telescopic cylinder 10 can drive the outer cylinder 3 to rotate by a certain angle through its telescopic movement.

[0055] In this embodiment, a plurality of outer heat dissipation fins 33 are fixedly distributed on the outer wall above the outer cylinder 3. When the high-temperature coolant enters the cavity 21, the outer heat dissipation fins 33 can passively dissipate heat from the coolant, so as to achieve a dual heat dissipation effect.

[0056] In this embodiment, the inner cylinder 2 is provided with a temperature sensor and a controller electrically connected to the temperature sensor and the exhaust fan 15, which is used to adjust the rotation speed of the exhaust fan 15 according to the data fed back by the temperature sensor.

[0057] In this embodiment, an electric valve is provided between the water pump 7 and the water outlet pipe 71, and the electric valve dynamically adjusts the opening degree according to the coolant reflux pressure.

[0058] During specific implementation, it includes:

[0059] Heat dissipation operation stage:

[0060] Coolant circulation: The high-temperature coolant enters the cavity 21 from the water inlet pipe 31. Under the siphon effect of the water pump 7, it flows through the radially distributed side pipes 5 to the central pipe 4. During this process, heat is transferred to the inner heat sinks 6 through the side pipe walls.

[0061] Passive heat dissipation: The high-temperature coolant in the cavity 21 simultaneously conducts heat to the outer heat sinks 33 of the outer cylinder 3, forming a heat exchange with the external air.

[0062] Active air cooling: After the fan 15 starts, a negative pressure is formed. External air enters the inner cylinder 2 through the outer air inlet 32 and the inner air inlet 22. When the air flows through the radially arranged inner heat sinks 6, the heat exchange efficiency is enhanced through the turbulent effect.

[0063] Dynamic adjustment stage:

[0064] Heat sink angle adjustment: The outer cylinder 3 is driven to rotate by the telescopic cylinder 10, driving the bevel gear ring 36 to mesh with the bevel gear 9, so that the side pipes 5 rotate synchronously by ±30°, realizing stepless adjustment of the inclination angle of the inner heat sinks 6 to adapt to different heat dissipation load requirements.

[0065] Intelligent air volume control: The temperature sensor monitors the temperature of the inner cylinder 2 in real time, and the controller dynamically adjusts the rotation speed of the fan 15 through the PID algorithm, reducing energy consumption while ensuring the heat dissipation efficiency.

[0066] Automatic cleaning stage:

[0067] Positioning preparation: When the controller detects a decrease in heat dissipation efficiency, the outer cylinder 3 rotates to the position where the outer dust outlet 35 is aligned with the inner dust outlet 23. At this time, the inner heat sinks 6 are adjusted to the vertical state.

[0068] Mechanical descaling: The driving gear 14 drives the rack 13 to reciprocate, and all the slide rods 12 are linked through the connecting ring 16, and the V-shaped scraping strip 11 performs cross-scraping cleaning on the surface of the heat sinks.

[0069] Negative pressure dust removal: The fan 15 switches to the reverse mode, and the peeled dust is blown into the dust collection box 8 through the dust removal channel, and the filter screen ensures effective interception of fine dust.

[0070] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A highly efficient and energy-saving heat dissipation device for electrical automation equipment, characterized in that ,include: Base (1); An inner cylinder (2) fixed on the base (1), and an outer cylinder (3) coaxially sleeved on the outer side of the inner cylinder (2), wherein a cavity (21) is formed between the inner cylinder (2) and the outer cylinder (3), and the inner cylinder (2) and the outer cylinder (3) are rotatably connected at both ends via a sealing ring; A water inlet pipe (31) that penetrates the outer cylinder (3) and extends into the cavity (21); A central tube (4) fixed at the center of the inner tube (2), and a plurality of side tubes (5) distributed along the axial direction of the inner tube (2), wherein the side tubes (5) are arranged radially around the central tube (4), and both ends of each of the side tubes (5) respectively penetrate the central tube (4) and the cavity (21), and internal cooling fins (6) are fixed on both sides of each of the side tubes (5); A water pump (7) fixed to one end of the inner tube (2), wherein the inlet of the water pump (7) is connected to the central tube (4), and the outlet is connected to the water outlet pipe (71); A fan (15) disposed at an end of the inner cylinder (2) away from the water pump (7); An inner air inlet (22) and an outer air inlet (32) are provided on the side walls of the inner cylinder (2) and the outer cylinder (3) at one end close to the water pump (7), wherein the inner air inlet (22) and the outer air inlet (32) are located outside the sealing ring.

2. The high-efficiency and energy-saving heat dissipation device for electrical automation equipment according to claim 1, characterized in that: The side tube (5) is rotatably arranged between the central tube (4) and the inner tube (2), and a bevel gear (9) is fixed to a section of the side tube (5) in the cavity (21); A plurality of bevel gear rings (36) are fixed to the inner wall of the outer cylinder (3), and each bevel gear ring (36) is respectively meshed with each bevel gear (9).

3. The high-efficiency and energy-saving heat dissipation device for electrical automation equipment according to claim 1, characterized in that: A plurality of circumferentially distributed sliding rods (12) are slidably penetrated through one end of the inner cylinder (2) close to the water pump (7), each of the sliding rods (12) corresponding to the position of each row of inner heat sinks (6), and one end of each of the sliding rods (12) outside the inner cylinder (2) is commonly connected to a connecting ring (16); Two scraping strips (11) are fixed to one end of each sliding rod (12) in the inner cylinder (2), and the two scraping strips (11) are arranged in a V-shape, with their openings facing the side away from the water pump (7).

4. The high-efficiency and energy-saving heat dissipation device for electrical automation equipment according to claim 3, characterized in that: A rack (13) is fixed below one of the sliding rods (12), and a driving gear (14) is arranged in the base (1), and the driving gear (14) is meshed with the rack (13).

5. The high-efficiency and energy-saving heat dissipation device for electrical automation equipment according to claim 1, characterized in that: The bottom of the inner cylinder (2) is provided with an inner dust outlet (23), the inner wall of the bottom of the outer cylinder (3) is fixed with a sealing strip (34) in contact with the inner cylinder (2), and one side of the sealing strip (34) is provided with an outer dust outlet (35).

6. The high-efficiency and energy-saving heat dissipation device for electrical automation equipment according to claim 1, characterized in that: A detachable dust collecting box (8) is arranged in the base (1) at a position corresponding to the bottom of the outer cylinder (3), and a filter screen is arranged on the side of the dust collecting box (8).

7. The high-efficiency and energy-saving heat dissipation device for electrical automation equipment according to claim 1, characterized in that: A telescopic cylinder (10) is hingedly connected between the outer cylinder (3) and the base (1).

8. The high-efficiency and energy-saving heat dissipation device for electrical automation equipment according to claim 1, characterized in that: A plurality of external cooling fins (33) are fixedly distributed in the outer wall above the outer cylinder (3).

9. The high-efficiency and energy-saving heat dissipation device for electrical automation equipment according to claim 1, characterized in that: The inner cylinder (2) is provided with a temperature sensor and a controller electrically connected to the temperature sensor and the exhaust fan (15).

10. The high-efficiency and energy-saving heat dissipation device for electrical automation equipment according to claim 1, characterized in that: An electric valve is provided between the water pump (7) and the water outlet pipe (71).

Images