Assembled excitation control cabinet convenient for heat dissipation

Abstract

The invention relates to the technical field of excitation control cabinets, in particular to an assembled excitation control cabinet convenient for heat dissipation, which comprises a cabinet body, and an air interchanger is movably arranged on the inner side of the cabinet body through two lifting mechanisms; the ventilation device comprises a lifting shell, an upper partition cavity, a transmission cavity and a lower partition cavity are sequentially formed in the inner side of the lifting shell from top to bottom, and four ventilation openings are symmetrically formed in the upper side and the lower side of the lifting shell. The lifting mechanism drives the ventilation device to reciprocate up and down inside the cabinet body, when the ventilation device moves downwards, hot air at the lower end of the inner side of the cabinet body can be exhausted outwards, external cold air is sucked into the upper end of the inner side of the cabinet body, and when the ventilation device moves upwards, hot air at the upper end of the inner side of the cabinet body can be exhausted outwards. And outside cold air is sucked into the lower end of the inner side of the cabinet body, so that hot air at each position in the cabinet body can be exchanged to the greatest extent, and the air exchange efficiency of the hot air is improved.

Description

Technical Field

[0001] The invention relates to the technical field of excitation control cabinets, and in particular to an assembled excitation control cabinet that is convenient for heat dissipation. Background Art

[0002] The function of the excitation control cabinet is to convert the ordinary industrial frequency power supply into direct current through rectification. Then the control circuit can be notified to change the level of the DC output voltage. The output DC voltage is introduced into the rotor of the generator through the circuit breaker and the slip ring brush as the excitation power supply of the generator. In actual use, multiple excitation control cabinets need to be placed side by side, which greatly reduces the contact surface between the two sides of each excitation control cabinet and the air, reducing the circulation of the hot air in the cabinet.

[0003] After searching, a Chinese patent with publication number: CN218334945U discloses a control cabinet, including a cabinet body, a fan is fixedly connected to one side of the cabinet body, a water cooling pipe is fixedly connected to the back side of the cabinet body, a wiring harness assembly is fixedly connected to the inner wall of the cabinet body, a dust removal assembly is hinged to the top of the cabinet body through an angle steel, the wiring harness assembly includes a fixing plate, a slide plate, a retaining ring, bolts and nuts, one side of the fixing plate is fixedly connected to the inner wall of the cabinet body, and the inside of the fixing plate is threadedly connected to the slide plate through bolts.

[0004] Based on the above search and combined with actual problems, it is found that in order to improve the heat dissipation capacity of existing electric control cabinets, heat dissipation fans and heat dissipation ports are usually added. Through the action of the heat dissipation fan, the hot air in the cabinet is blown out to allow the outside cold air to enter. However, since the fan position is fixed, in actual use, it can only provide good circulation for the air close to the fan position, and the air circulation far away from the fan is poor. This causes more heat to accumulate in local positions in the cabinet, affecting the heat dissipation of internal electrical components. If the circulation of hot air is increased by increasing the speed of the fan, more dust will be inhaled, and excessive dust will affect the heat dissipation of the electrical components. Summary of the invention

[0005] The object of the present invention is to provide an assembled excitation control cabinet that is easy to dissipate heat, so as to solve the problems raised in the above-mentioned background technology.

[0006] The technical solution of the present invention is: an assembled excitation control cabinet that is easy to dissipate heat, including a cabinet body, an inner side of the cabinet body is provided with a ventilation device movably arranged through two lifting mechanisms; the ventilation device includes a lifting shell, the inner side of the lifting shell is provided with an upper compartment, a transmission compartment, and a lower compartment in sequence from top to bottom, and four air vents are symmetrically opened on the upper and lower sides of the lifting shell, the interior of the lifting shell is penetrated and rotatably connected with two main shafts located on the inner sides of the four air vents, both ends of the two main shafts are movably provided with a plurality of fan blades through an angle adjustment mechanism, the angle adjustment mechanism is used to adjust the flipping angle of the fan blades, main shaft driving mechanisms are respectively arranged between the two main shafts and the lifting shell and the cabinet body, two air intake and exhaust mechanisms are arranged on the outer side of the lifting shell, and the two air intake and exhaust mechanisms are respectively connected with the upper compartment and the lower compartment.

[0007] Preferably, the lifting mechanism includes two pulley shafts rotatably connected to one side of the interior of the cabinet at the upper and lower ends, a lifting motor installed at the lower end of the interior of the cabinet, and a belt fixing block fixed to one end of the lifting shell, the driving end of the lifting motor is fixedly connected to one end of one of the pulley shafts, pulleys are fixed on the outer sides of the two pulley shafts, the outer sides of the two pulleys are connected through a lifting belt transmission, and one side of the lifting belt is fixed by a belt fixing block.

[0008] Preferably, travel switches are installed at both upper and lower ends of the belt fixing block, and both of the travel switches are electrically connected to the lifting motor through a control circuit.

[0009] Preferably, the spindle driving mechanism includes a driven bevel gear fixed to the outside of the spindle, two partitions fixed to the inside of the transmission chamber and a vertical rod fixed to the inside of the cabinet, the vertical rod movably passes through the interior of the lifting shell, and a rack is provided on one side of the vertical rod, a first rotating shaft is rotatably passed through the interior of one of the partitions close to the vertical rod, and a second rotating shaft is rotatably passed through the interior of the other partition, a driving gear meshing with the rack is fixed to one end of the first rotating shaft, an active bevel gear meshing with the driven bevel gear is fixed to one end of the second rotating shaft, and a speed change transmission mechanism is provided between the first rotating shaft and the second rotating shaft.

[0010] Preferably, the speed change transmission mechanism includes an intermediate shaft rotatably connected between two partitions, a first driving gear and a second driven gear respectively fixed to one end of the first rotating shaft and the second rotating shaft, the first driven gear and the second driving gear are respectively fixed to both ends of the intermediate shaft, the first driven gear is meshed with the first driving gear, the second driving gear is meshed with the second driven gear, the number of teeth of the first driving gear is greater than the number of teeth of the first driven gear, and the number of teeth of the second driving gear is greater than the number of teeth of the second driven gear.

[0011] Preferably, the angle adjustment mechanism includes a cylindrical shell fixed to the end of the main shaft, a plurality of blade shafts are rotatably inserted on the outer side of the cylindrical shell, one end of each of the blade shafts is fixedly connected to the blades at the corresponding position, and an adjusting disk is fixed to the other end of each blade shaft, a driving pin is fixed to one side of each of the adjusting disks, an adjusting screw extending to the outside of the cylindrical shell is rotatably connected to the inner side, a movable disk that can move up and down is connected to the outer side of the adjusting screw through a threaded transmission, an annular groove is opened on the outer side of the movable disk, and a plurality of driving pins are movably connected to the inner side of the annular groove.

[0012] Preferably, the air intake and exhaust mechanism includes an upper cavity air pipe and a lower cavity air pipe respectively connected to the upper cavity and the lower cavity, one end of the upper cavity air pipe and the lower cavity air pipe are connected to a reversing shell, a sliding rod is slidably connected to the interior of the reversing shell, and blocks are fixed on the outer sides of the sliding rod at positions corresponding to the upper cavity air pipe and the lower cavity air pipe, an upper end of one side of the reversing shell is connected to an upper air intake pipe and an upper exhaust pipe that can be connected to the upper cavity air pipe, and a lower end of one side of the reversing shell is connected to a lower air intake pipe and a lower exhaust pipe that can be connected to the lower cavity air pipe, one end of the upper air intake pipe and the lower air intake pipe are both connected to an air intake filter device connected to the outside of the cabinet, and one end of the upper exhaust pipe and the lower exhaust pipe are both connected to the outside of the cabinet.

[0013] Preferably, the air intake filter device includes a filter cartridge connected to the end of the lower air intake pipe, a spiral blade is fixed on the inner side of the filter cartridge, and a plurality of air intake holes are opened at the lower end of the outer side of the filter cartridge, and both side surfaces of the spiral blade are covered with filter cotton.

[0014] Preferably, rubber rings are provided on the outer sides of the two stoppers.

[0015] Preferably, the upper air intake pipe, the upper exhaust pipe, the lower air intake pipe, and the lower exhaust pipe are all flexible and retractable rubber tubes.

[0016] The present invention provides an assembled excitation control cabinet that is convenient for heat dissipation through improvement. Compared with the prior art, the present invention has the following improvements and advantages:

[0017] First, the present invention drives the ventilation device to move back and forth up and down inside the cabinet through the lifting mechanism. When the ventilation device moves downward, the hot air at the lower end of the inside of the cabinet can be discharged outward, and the cold air from the outside can be sucked into the upper end of the inside of the cabinet. When the ventilation device moves upward, the hot air at the upper end of the inside of the cabinet can be discharged outward, and the cold air from the outside can be sucked into the lower end of the inside of the cabinet. In this way, the hot air at various positions in the cabinet can be ventilated to the greatest extent, the ventilation efficiency of the hot air is improved, and the heat dissipation capacity is maximized while ensuring the waterproof and dustproof performance of the cabinet.

[0018] Second: The present invention can flexibly adjust the angle between the fan blades and the horizontal plane according to the outside temperature through the angle adjustment mechanism. When the outside temperature is high, increasing the angle between the fan blades and the horizontal plane can further increase the ventilation speed of the ventilation device for the hot air in the cabinet, thereby ensuring a good heat dissipation effect even in a high temperature environment.

[0019] Thirdly, the present invention can adsorb and filter dust in cold air before the outside cold air is sucked in by connecting the air intake filter device to the ends of the upper air intake pipe and the lower air intake pipe, thereby ensuring the cleanliness of the air sucked into the inner side of the cabinet and preventing dust from covering the electrical components and affecting heat dissipation after long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure inside the cabinet in the present invention;

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the cabinet in the present invention;

[0024] Figure 4 It is a first cross-sectional structural schematic diagram of the ventilation device in the present invention;

[0025] Figure 5 is a second cross-sectional structural schematic diagram of the ventilation device in the present invention;

[0026] Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure at A in the middle;

[0027] Figure 7 For the present invention Figure 5 A schematic diagram of the enlarged structure at B in the middle;

[0028] Figure 8 It is a schematic diagram of the disassembled structure of the main shaft and fan blades in the present invention.

[0029] Reference numerals:

[0030] 1. Cabinet; 101. Lifting shell; 102. Upper compartment; 103. Lower compartment; 104. Vent; 105. Main shaft; 106. Fan blade; 107. Transmission chamber; 108. Vertical rod; 109. Rack; 110. Partition; 111. First rotating shaft; 112. Driving gear; 113. First driving gear; 114. Intermediate shaft; 115. First driven gear; 116. Second driving gear; 117. Second rotating shaft; 118. Second driven gear; 119. Driving bevel gear; 120. Driven bevel gear; 201. Lifting motor; 202. Pulley shaft ; 203, pulley; 204, lifting belt; 205, belt fixing block; 206, travel switch; 301, cylindrical shell; 302, fan shaft; 303, adjusting disk; 304, toggle pin; 305, adjusting screw; 306, movable disk; 307, annular groove; 401, upper cavity air pipe; 402, lower cavity air pipe; 403, reversing shell; 404, sliding rod; 405, block; 406, upper air inlet pipe; 407, upper exhaust pipe; 408, lower air inlet pipe; 409, lower exhaust pipe; 501, filter cartridge; 502, spiral blade; 503, air inlet hole. DETAILED DESCRIPTION

[0031] The present invention is described in detail below, and the technical solutions in the embodiments of the present invention are clearly and completely described. 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.

[0032] The present invention provides an assembled excitation control cabinet that is convenient for heat dissipation through improvement. The technical solution of the present invention is:

[0033] like Figures 1 to 8 As shown, an embodiment of the present invention provides an assembled excitation control cabinet that is easy to dissipate heat, including a cabinet body 1, and a ventilation device is movably arranged on the inner side of the cabinet body 1 through two lifting mechanisms; the ventilation device includes a lifting shell 101, and the inner side of the lifting shell 101 is provided with an upper compartment 102, a transmission chamber 107, and a lower compartment 103 from top to bottom, and four vents 104 are symmetrically opened on the upper and lower sides of the lifting shell 101, and two main shafts 105 located on the inner sides of the four vents 104 are rotatably connected through the interior of the lifting shell 101, and multiple fan blades 106 are movably arranged at both ends of the two main shafts 105 through an angle adjustment mechanism, and the angle adjustment mechanism is used to adjust the flipping angle of the fan blades 106, and main shaft driving mechanisms are respectively arranged between the two main shafts 105 and the lifting shell 101 and the cabinet body 1, and two air intake and exhaust mechanisms are arranged on the outer side of the lifting shell 101, and the two air intake and exhaust mechanisms are respectively connected to the upper compartment 102 and the lower compartment 103.

[0034] Furthermore, the lifting mechanism includes two pulley shafts 202 rotatably connected to one side of the cabinet 1 at the upper and lower ends, a lifting motor 201 installed at the lower end of the cabinet 1, and a belt fixing block 205 fixed to one end of the lifting shell 101. The driving end of the lifting motor 201 is fixedly connected to one end of one of the pulley shafts 202, and pulleys 203 are fixed on the outer sides of the two pulley shafts 202. The outer sides of the two pulleys 203 are connected by a lifting belt 204. The lifting belt 204 is fixed by a belt fixing block 205 on one side. Travel switches 206 are installed at the upper and lower ends of the belt fixing block 205. The two travel switches 206 are electrically connected to the lifting motor 201 through a control circuit.

[0035] The ventilation device is driven by the lifting mechanism to move up and down reciprocatingly inside the cabinet 1, so that the hot air at various positions inside the cabinet 1 can be ventilated to avoid heat accumulation at local positions in the cabinet 1, thereby helping to improve the heat dissipation effect of the electrical components inside the cabinet 1.

[0036] Furthermore, the spindle drive mechanism includes a driven bevel gear 120 fixed to the outside of the spindle 105, two partitions 110 fixed to the inside of the transmission chamber 107 and a vertical rod 108 fixed to the inside of the cabinet 1, the vertical rod 108 movably passes through the interior of the lifting shell 101, and a rack 109 is provided on one side of the vertical rod 108, a first rotating shaft 111 is rotatably connected to the interior of a partition 110 close to the vertical rod 108, and a second rotating shaft 117 is rotatably connected to the interior of the other partition 110, a driving gear 112 meshing with the rack 109 is fixed to one end of the first rotating shaft 111, and an active bevel gear 119 meshing with the driven bevel gear 120 is fixed to one end of the second rotating shaft 117. A speed change transmission mechanism is arranged between a rotating shaft 111 and a second rotating shaft 117, and the speed change transmission mechanism comprises an intermediate shaft 114 rotatably connected between two partitions 110, a first driving gear 113 and a second driven gear 118 respectively fixed at one end of the first rotating shaft 111 and the second rotating shaft 117, a first driven gear 115 and a second driving gear 116 are respectively fixed at two ends of the intermediate shaft 114, the first driven gear 115 is meshed with the first driving gear 113, the second driving gear 116 is meshed with the second driven gear 118, the number of teeth of the first driving gear 113 is greater than the number of teeth of the first driven gear 115, and the number of teeth of the second driving gear 116 is greater than the number of teeth of the second driven gear 118;

[0037] Through the main shaft driving mechanism, while the lifting mechanism drives the ventilation device to move up and down, the two main shafts 105 can be driven to rotate in conjunction. The faster the ventilation device moves, the faster the rotation speed of the main shaft 105 is, thereby driving the fan blades 106 to rotate at a faster speed. At the same time, through the speed change transmission mechanism therein, the rotation speed of the main shaft 105 can be further accelerated, thereby accelerating the rotation speed of the fan blades 106, further improving the ventilation efficiency.

[0038] Furthermore, the angle adjustment mechanism includes a cylindrical shell 301 fixed to the end of the main shaft 105, a plurality of blade shafts 302 are rotatably inserted on the outer side of the cylindrical shell 301, one end of each blade shaft 302 is respectively fixedly connected to the blade 106 at the corresponding position, and an adjustment disk 303 is fixed to the other end of each blade shaft 302, and a toggle pin 304 is fixed to one side of each adjustment disk 303, an adjustment screw 305 extending to the outside of the cylindrical shell 301 is rotatably connected to the inner side of the cylindrical shell 301, and a movable disk 306 that can move up and down is connected to the outer side of the adjusting screw 305 through a threaded transmission, and an annular groove 307 is provided on the outer side of the movable disk 306, and a plurality of toggle pins 304 are movably connected to the inner side of the annular groove 307;

[0039] Through the angle adjustment mechanism, the angle between the fan blades 106 and the horizontal plane can be flexibly adjusted according to the outside temperature. When the outside temperature is high, increasing the angle between the fan blades 106 and the horizontal plane can further increase the ventilation speed of the ventilation device for the hot air in the cabinet 1, thereby ensuring a good heat dissipation effect even in a high temperature environment. When the outside temperature is low, reducing the angle between the fan blades 106 and the horizontal plane can reduce the air circulation efficiency, thereby helping to reduce the entry of dust.

[0040] Furthermore, the air intake and exhaust mechanism includes an upper cavity air pipe 401 and a lower cavity air pipe 402 respectively connected to the upper cavity 102 and the lower cavity 103, one end of the upper cavity air pipe 401 and the lower cavity air pipe 402 are connected to a reversing shell 403, the interior of the reversing shell 403 is slidably connected with a slide rod 404, and the outer side of the slide rod 404 is fixed with a stopper 405 at the position corresponding to the upper cavity air pipe 401 and the lower cavity air pipe 402, and the upper end of one side of the reversing shell 403 is connected to an upper inlet that can be connected to the upper cavity air pipe 401. The air pipe 406 and the upper exhaust pipe 407, and the lower end of one side of the reversing shell 403 is connected with a lower air inlet pipe 408 and a lower exhaust pipe 409 which can be communicated with the lower cavity air pipe 402, one end of the upper air inlet pipe 406 and the lower air inlet pipe 408 are connected with an air intake filter device which is communicated with the outside of the cabinet 1, and one end of the upper exhaust pipe 407 and the lower exhaust pipe 409 are communicated with the outside of the cabinet 1, and the upper air inlet pipe 406, the upper exhaust pipe 407, the lower air inlet pipe 408, and the lower exhaust pipe 409 are all flexible and retractable rubber tubes;

[0041] Through the air intake and exhaust mechanism, when the ventilation device moves downward, the upper air intake pipe 406 can be connected with the upper cavity air pipe 401, and the lower exhaust pipe 409 can be connected with the lower cavity air pipe 402, so that the air at the lower end of the cabinet 1 is discharged to the outside through the lower exhaust pipe 409, and the outside cold air is sucked into the upper end space of the cabinet 1 through the upper air intake pipe 406. When the ventilation device moves upward, the upper exhaust pipe 407 can be connected with the upper cavity air pipe 401, and the lower air intake pipe 408 can be connected with the lower cavity air pipe 402, so that the air at the upper end of the cabinet 1 is discharged to the outside through the upper exhaust pipe 407, and the outside cold air is sucked into the lower end space of the cabinet 1 through the lower air intake pipe 408.

[0042] Furthermore, the air intake filter device includes a filter cartridge 501 connected to the end of the lower air intake pipe 408, a spiral blade 502 is fixed to the inner side of the filter cartridge 501, and a plurality of air intake holes 503 are opened at the lower end of the outer side of the filter cartridge 501, and both sides of the spiral blade 502 are covered with filter cotton;

[0043] The air intake filter device can absorb and filter the dust in the cold air before the cold air from the outside is sucked in, thereby ensuring the cleanliness of the air sucked into the cabinet 1 and preventing dust from covering the electrical components and affecting heat dissipation after long-term use.

[0044] Furthermore, rubber rings are provided on the outer sides of the two stoppers 405;

[0045] The rubber ring can provide a certain damping between the slide bar 404 and the reversing shell 403, thereby preventing the slide bar 404 from moving arbitrarily. The slide bar 404 can only slide when the upper end of the slide bar 404 contacts the bottom and top of the cabinet 1 respectively.

[0046] Working principle: When the electrical components inside the cabinet 1 are running, a large amount of heat is generated. The heat is transferred to the air inside the cabinet 1, causing the air temperature inside the cabinet 1 to rise. In order to ensure the stable operation of the electrical components inside the cabinet 1, it is necessary to circulate the hot air inside the cabinet 1 efficiently and introduce the cold air outside into the inside of the cabinet 1;

[0047] The two lifting motors 201 in the two lifting mechanisms are controlled to run synchronously, and the two lifting motors 201 respectively drive the corresponding two pulley shafts 202 to rotate at a constant speed in the opposite direction, and the two pulley shafts 202 respectively drive the two outer pulleys 203 to rotate at a constant speed in the opposite direction, and the two pulleys 203 drive the two lifting belts 204 to rotate at a constant speed in the opposite direction, and at the same time drive the two pulleys 203 at the upper end and the two pulley shafts 202 at the upper end to rotate at a constant speed in the opposite direction. Since the two ends of the lifting shell 101 are respectively fixedly connected to the two lifting belts 204 through two belt fixing blocks 205, the two lifting belts 204 can drive the ventilation device to move vertically up and down on the inner side of the cabinet 1 through the two belt fixing blocks 205 when the two lifting belts 204 rotate. When the lifting shell 101 of the ventilation device moves up to the highest point on the inner side of the cabinet 1, the upper side The two travel switches 206 will contact the inner top of the cabinet 1, thereby triggering the circuits of the two travel switches 206. The two travel switches 206 control the lifting motor 201 to switch the rotation direction through the control circuit, thereby driving the two lifting belts 204 to change the rotation direction, thereby driving the ventilation device to move downward. When the ventilation device moves down to the lowest point inside the cabinet 1, the two travel switches 206 located at the bottom will contact the bottom of the cabinet 1, thereby triggering the circuits of the two travel switches 206 at the lower end. The two travel switches 206 at the lower end control the lifting motor 201 to switch the rotation direction again through the control circuit, thereby driving the ventilation device to move upward again. This reciprocating process can drive the ventilation device to keep moving up and down on the inner side of the cabinet 1, thereby helping to ventilate the hot air at various positions inside the cabinet 1.

[0048] The two lifting mechanisms first drive the ventilation device to move downward, and the sliding rod 404 of the air intake and exhaust mechanism moves down to the lowest end of the reversing shell 403. When the lifting shell 101 of the ventilation device moves downward, the two main shaft driving mechanisms at both ends thereof are driven to move downward. Since the vertical rod 108 of the main shaft driving mechanism is fixed, when the driving gear 112 of the main shaft driving mechanism moves downward with the lifting shell 101, it can generate rotation through the meshing between the teeth and the rack 109, thereby driving the first rotating shaft 111 to rotate. This first rotating shaft 111 drives the first driving gear 113 of the corresponding speed change transmission mechanism to rotate. The first driving gear 113 drives the first driven gear 115 to rotate at a larger angular velocity through the teeth. The first driven gear 115 drives the second driving gear 116 to rotate through the intermediate shaft 114. The second driving gear 116 drives the second driven gear 116 through the teeth. The driven gear 118 rotates at a larger angular velocity, and the second driven gear 118 drives the second rotating shaft 117 of the main shaft driving mechanism to rotate. The second rotating shaft 117 drives the active bevel gear 119 to rotate. The active bevel gear 119 drives the driven bevel gear 120 to rotate through the teeth. The driven bevel gear 120 drives the main shaft 105 to rotate. The main shaft 105 can drive a plurality of fan blades 106 located at the upper and lower ends to rotate. When the fan blades 106 located at the upper and lower ends rotate, the air is blown from bottom to top. The fan blades 106 located on the lower side blow the hot air below the ventilation device inside the cabinet 1 to the inside of the lower compartment 103. The hot air inside the lower compartment 103 flows to the inside of the reversing shell 403 through the lower cavity air pipe 402 of the air intake and exhaust mechanism under the action of air pressure. Due to the initial operation, the slide bar 404 is located at the lower end of the inner side of the reversing shell 403. Figure 4 In the state shown, the hot air flowing from the lower cavity air pipe 402 to the inner side of the reversing shell 403 can flow into the inner side of the lower exhaust pipe 409, and then be discharged to the outside of the cabinet 1 through one end of the lower exhaust pipe 409, so as to discharge the hot air below the ventilation device inside the cabinet 1, and the fan blades 106 located on the upper side blow the air inside the upper compartment 102 to the space above the ventilation device inside the cabinet 1, so as to form a negative pressure inside the upper compartment 102, and the cold air from the outside can flow into the inner upper end of the reversing shell 403 through the upper air inlet pipe 406, and then the cold air flows into the inner side of the upper compartment 102 through the upper cavity air pipe 401, and finally is blown to the space above the ventilation device inside the cabinet 1 under the action of the upper fan blades 106, so as to quickly discharge the hot air at various positions inside the cabinet 1, and greatly improve the heat dissipation efficiency of the electrical components inside the cabinet 1;

[0049] When the ventilation device moves down to the bottom of the cabinet 1, the lower end of the slide rod 404 of the air intake and exhaust mechanism moves upward by the force of the bottom end of the cabinet 1, thereby driving the two stoppers 405 to move upward. The two stoppers 405 move up to the upper end of the reversing shell 403, and the two stoppers 405 respectively block the upper cavity air pipe 401 and the upper air intake pipe 406, and the lower cavity air pipe 402 and the lower exhaust pipe 409, so that the upper cavity air pipe 401 is connected with the upper exhaust pipe 407, and the lower cavity air pipe 402 is connected with the lower air intake pipe 408. Then the ventilation device moves up, and the spindle drive mechanism will drive it when moving up. The moving blades 106 and the fan blades 106 rotate in opposite directions, so as to blow the air from top to bottom. According to the above principle, when the ventilation device moves upward, the air at the upper end of the inner side of the cabinet 1 is discharged to the inner side of the upper exhaust pipe 407 through the upper compartment 102, and then discharged to the outer side of the cabinet 1 through one end of the upper exhaust pipe 407, while the inner side of the lower compartment 103 forms a negative pressure, and the cold air from the outside is sucked into the inner lower end space of the cabinet 1 through the lower air inlet pipe 408, so that the air inside the cabinet 1 can be circulated and replaced in the process of the ventilation device moving up and down, thereby further improving the ventilation efficiency;

[0050] The ends of the upper air inlet pipe 406 and the lower air inlet pipe 408 are both connected to an air inlet filter device. Before the external cold air is sucked into the upper air inlet pipe 406 or the lower air inlet pipe 408, the cold air first flows into the inner side of the filter cartridge 501 through the air inlet hole 503. Then, under the guidance of the spiral blades 502 inside, the cold air can flow along a spiral trajectory to the inner side of the upper air inlet pipe 406 or the lower air inlet pipe 408, thereby extending the flow path of the cold air. Moreover, both side surfaces of the spiral blades 502 are covered with filter cotton. Therefore, when the cold air contacts the surface of the spiral blades 502, the dust particles in the cold air will be blocked in the tiny holes of the filter cotton on the surface of the spiral blades 502, thereby ensuring the cleanliness of the air sucked into the cabinet 1 and preventing dust from covering the electrical components and affecting the heat dissipation after long-term use.

[0051] According to the outside temperature, the staff can rotate the adjusting screw 305 of each angle adjustment mechanism. The adjusting screw 305 rotates to drive the movable disk 306 to move up and down through the thread. When the outside temperature is high, the movable disk 306 is driven to move downward. Through the active cooperation between the annular groove 307 and each push pin 304, each adjusting disk 303 can be driven to rotate synchronously at an equal angle. Each adjusting disk 303 drives each fan blade shaft 302 to rotate at an equal angle, thereby driving each fan blade 106 to rotate at an equal angle, increasing the angle between the fan blade 106 and the horizontal plane. Therefore, when the main shaft 105 and the fan blade 106 rotate at an equal speed, the air flow rate can be increased, thereby accelerating the ventilation efficiency of the air inside the cabinet 1, thereby ensuring a good heat dissipation effect even in a high temperature environment.

[0052] The above description enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An assembled excitation control cabinet that is easy to dissipate heat, comprising a cabinet body (1), characterized in that: The inner side of the cabinet (1) is provided with a ventilation device which is movably provided via two lifting mechanisms; The ventilation device comprises a lifting shell (101), the inner side of which is provided with an upper compartment (102), a transmission compartment (107), and a lower compartment (103) in order from top to bottom, and four vents (104) are symmetrically provided on the upper and lower sides of the lifting shell (101), the interior of the lifting shell (101) is penetrated by two main shafts (105) located on the inner sides of the four vents (104) and rotatably connected, and a plurality of fan blades (106) are movably provided at both ends of the two main shafts (105) through an angle adjustment mechanism, and the angle adjustment mechanism is used to adjust the flip angle of the fan blades (106), and main shaft driving mechanisms are respectively provided between the two main shafts (105) and the lifting shell (101) and the cabinet (1), and two air intake and exhaust mechanisms are provided on the outer side of the lifting shell (101), and the two air intake and exhaust mechanisms are respectively connected to the upper compartment (102) and the lower compartment (103).

2. The assembled excitation control cabinet for heat dissipation according to claim 1 is characterized in that: The lifting mechanism comprises two pulley shafts (202) rotatably connected to one side of the cabinet (1) at the upper and lower ends, a lifting motor (201) installed at the lower end of the cabinet (1), and a belt fixing block (205) fixed to one end of the lifting shell (101); the driving end of the lifting motor (201) is fixedly connected to one end of one of the pulley shafts (202); pulleys (203) are fixed to the outer sides of the two pulley shafts (202); the outer sides of the two pulleys (203) are connected by a lifting belt (204); and one side of the lifting belt (204) is fixed by a belt fixing block (205).

3. The assembled excitation control cabinet for easy heat dissipation according to claim 2 is characterized in that: Travel switches (206) are installed at both upper and lower ends of the belt fixing block (205), and both of the travel switches (206) are electrically connected to the lifting motor (201) through a control circuit.

4. The assembled excitation control cabinet for easy heat dissipation according to claim 1 is characterized in that: The spindle drive mechanism comprises a driven bevel gear (120) fixed on the outside of the spindle (105), two partitions (110) fixed on the inside of the transmission chamber (107), and a vertical rod (108) fixed on the inside of the cabinet (1); the vertical rod (108) movably penetrates the interior of the lifting shell (101), and a rack (109) is provided on one side of the vertical rod (108); a rotationally connected gear (109) is penetrated inside the partition (110) close to the vertical rod (108) A first rotating shaft (111) is provided, and a second rotating shaft (117) is rotatably connected to the interior of another partition (110); a driving gear (112) meshing with a rack (109) is fixed to one end of the first rotating shaft (111); an active bevel gear (119) meshing with a driven bevel gear (120) is fixed to one end of the second rotating shaft (117); a speed transmission mechanism is provided between the first rotating shaft (111) and the second rotating shaft (117).

5. The assembled excitation control cabinet for easy heat dissipation according to claim 4 is characterized in that: The speed change transmission mechanism comprises an intermediate shaft (114) rotatably connected between two partitions (110), a first driving gear (113) and a second driven gear (118) respectively fixed to one end of a first rotating shaft (111) and a second rotating shaft (117); a first driven gear (115) and a second driving gear (116) are respectively fixed to two ends of the intermediate shaft (114); the first driven gear (115) is meshed with the first driving gear (113); the second driving gear (116) is meshed with the second driven gear (118); the number of teeth of the first driving gear (113) is greater than the number of teeth of the first driven gear (115); and the number of teeth of the second driving gear (116) is greater than the number of teeth of the second driven gear (118).

6. The assembled excitation control cabinet for easy heat dissipation according to claim 1 is characterized in that: The angle adjustment mechanism comprises a cylindrical shell (301) fixed to the end of the main shaft (105); a plurality of fan blade shafts (302) are rotatably inserted on the outer side of the cylindrical shell (301); one end of each of the fan blade shafts (302) is fixedly connected to the fan blades (106) at the corresponding position, and an adjustment disk (303) is fixed to the other end of each fan blade shaft (302); a driving pin (304) is fixed to one side of each of the adjustment disks (303); an adjustment screw (305) extending to the outside of the cylindrical shell (301) is rotatably connected to the inner side of the cylindrical shell (301); the outer side of the adjustment screw (305) is connected to a movable disk (306) that can move up and down through a threaded transmission; an annular groove (307) is provided on the outer side of the movable disk (306); and a plurality of driving pins (304) are movably connected to the inner side of the annular groove (307).

7. The assembled excitation control cabinet for easy heat dissipation according to claim 1 is characterized in that: The air intake and exhaust mechanism comprises an upper cavity air pipe (401) and a lower cavity air pipe (402) respectively connected to the upper cavity (102) and the lower cavity (103); one end of the upper cavity air pipe (401) and the lower cavity air pipe (402) are connected to a reversing shell (403); a sliding rod (404) is slidably connected to the interior of the reversing shell (403); a stopper (405) is fixed on the outer side of the sliding rod (404) at the position corresponding to the upper cavity air pipe (401) and the lower cavity air pipe (402); the reversing shell (403) An upper end of one side is connected to an upper air intake pipe (406) and an upper exhaust pipe (407) that can communicate with the upper cavity air pipe (401), and a lower end of one side of the reversing shell (403) is connected to a lower air intake pipe (408) and a lower exhaust pipe (409) that can communicate with the lower cavity air pipe (402), one end of the upper air intake pipe (406) and the lower air intake pipe (408) are both connected to an air intake filter device that is connected to the outside of the cabinet (1), and one end of the upper exhaust pipe (407) and the lower exhaust pipe (409) are both connected to the outside of the cabinet (1).

8. The assembled excitation control cabinet for easy heat dissipation according to claim 7 is characterized in that: The air intake filter device comprises a filter cartridge (501) connected to the end of a lower air intake pipe (408), a spiral blade (502) is fixed on the inner side of the filter cartridge (501), and a plurality of air intake holes (503) are provided on the lower outer end of the filter cartridge (501), and both side surfaces of the spiral blade (502) are covered with filter cotton.

9. The assembled excitation control cabinet for easy heat dissipation according to claim 7 is characterized in that: Rubber rings are arranged on the outer sides of the two stoppers (405).

10. The assembled excitation control cabinet for easy heat dissipation according to claim 7 is characterized in that: The upper air intake pipe (406), the upper exhaust pipe (407), the lower air intake pipe (408) and the lower exhaust pipe (409) are all flexible and retractable rubber tubes.

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