Ultra low voltage regulated power supply

Abstract

The present application relates to an ultra-low voltage stabilized power supply, which includes a protection cabinet, a body and a fan. The protection cabinet includes a cabinet body and a cabinet door. A mounting groove is provided on one side of the cabinet body. The cabinet door is connected to the inner wall of the groove of the mounting groove. The cabinet door is used to cover the groove of the mounting groove. An air inlet is provided on one side wall of the cabinet body, and an air outlet is provided on the other side wall of the cabinet body. The air inlet and the air outlet are both connected to the mounting groove. The body and the fan are both fixedly connected to the groove wall of the mounting groove facing upward. The fan is provided on one side of the body close to the air inlet. The body is arranged in the protection cabinet, and the protection cabinet reduces the contact between the body and external dust impurities. The rotation of the fan allows external gas to enter the mounting groove through the air inlet and then be discharged from the air outlet, thereby improving the air flow in the mounting groove, facilitating the heat dissipation of the body, and improving the stability of the output voltage.

Description

Technical Field

[0001] The present application relates to the field of voltage stabilizing devices, and in particular to an ultra-low voltage stabilizing power supply. Background Art

[0002] An ultra-low voltage stabilized power supply is a power supply device that is mainly used to maintain the stability of the output voltage when the input voltage is unstable or fluctuates greatly. The working principle of an ultra-low voltage stabilized power supply is similar to that of a general linear regulator, mainly controlling the stability of the output voltage through negative feedback.

[0003] As the output voltage decreases, in order to maintain the stability of the output voltage, the current is increased or other methods are used to compensate for the decrease in output voltage, which causes the temperature of the transistor to rise. The increase in the temperature of the transistor may have a series of effects on its performance and working state, including a decrease in current amplification, a decrease in cut-off frequency, a decrease in input resistance, an increase in collector gap and a shortened service life. Therefore, if the heat dissipation conditions of the ultra-low voltage regulated power supply are not good, it will affect the stability of the output voltage. Summary of the invention

[0004] In order to improve the stability of the output voltage, the present application provides an ultra-low voltage regulated power supply.

[0005] The ultra-low voltage stabilized power supply provided in this application adopts the following technical solution:

[0006] An ultra-low voltage regulated power supply comprises a protection cabinet, a main body and a fan, wherein the protection cabinet comprises a cabinet body and a cabinet door, a mounting groove is arranged on one side of the cabinet body, the cabinet door is connected to the inner wall of the groove opening of the mounting groove, the cabinet door is used to cover the groove opening of the mounting groove, an air inlet is arranged on one side wall of the cabinet body, an air outlet is arranged on the other side wall of the cabinet body, the air inlet and the air outlet are both connected to the mounting groove, the main body and the fan are both fixedly connected to the groove wall of the mounting groove facing upward, and the fan is arranged on a side of the main body close to the air inlet.

[0007] By adopting the above technical solution, the main body is arranged in a protective cabinet, which reduces the contact between the main body and external dust and impurities. The rotation of the fan allows external gas to enter the installation groove through the air inlet and then be discharged from the air outlet, thereby improving the air flow in the installation groove, facilitating the heat dissipation of the main body and improving the stability of the output voltage.

[0008] Preferably, it also includes a dustproof net, which is fixedly connected to the outer wall of the cabinet and is used to cover the air inlet and the air outlet.

[0009] By adopting the above technical solution, the dustproof net reduces the probability of external impurities entering the installation groove, filters impurities with large diameters, reduces the accumulation of impurities inside the body, reduces the impact of impurities on the heat dissipation of the body, and improves the stability of the output voltage.

[0010] Preferably, a heat dissipation component is also included, which includes a water pool, a ventilation pipe and absorbent cotton. The water pool is fixedly connected to the upper end of the cabinet, the outer wall of the ventilation pipe is fixedly connected to the upper end of the water pool, and a water storage tank is provided at the upper end of the water pool. One end of the ventilation pipe faces the water storage tank, the other end of the ventilation pipe is connected to the air inlet, and the absorbent cotton is fixedly connected to the inner wall of the ventilation pipe.

[0011] By adopting the above technical solution, a part of the air entering the air inlet first passes through the water surface of the water storage tank. The temperature of the air passing through the water surface is relatively low, which is convenient for heat dissipation of the main body. The absorbent cotton is used to absorb water in the air to protect the main body.

[0012] Preferably, the heat dissipation assembly also includes a water tank, a water pipe and a ball valve, the water tank is fixedly connected to the upper end of the cabinet, one end of the water pipe is connected to the water tank, and the other end of the water pipe is connected to the water tank, the ball valve rotates around its own axis and is connected to the inner wall of the water pipe, and the ball valve is used to control the on and off of the water pipe.

[0013] By adopting the above technical solution, water is pre-stored in the water tank. When the temperature of the main body is too high, the ball valve opens, and the water in the water tank flows into the water storage tank, allowing air with lower temperature to enter the ventilation pipe, which is convenient for heat dissipation of the main body.

[0014] Preferably, the heat dissipation assembly also includes a memory alloy, a sliding rod, a first rack and a first gear, one end of the memory alloy is fixedly connected to the upper end of the main body, the other end of the memory alloy is fixedly connected to the sliding rod, the upper end of the cabinet is provided with a sliding opening, the sliding rod is slidably connected to the inner wall of the sliding opening, the first rack is fixedly connected to the upper end of the sliding rod, the first gear is coaxially fixedly connected to the valve stem of the ball valve, and the first rack is meshed with the first gear.

[0015] By adopting the above technical solution, when the temperature of the body rises to the deformation temperature of the memory alloy, the deformation of the memory alloy drives the sliding rod to slide, so that the gear rotates and the ball valve opens. When the temperature of the body drops to the deformation temperature of the memory alloy, the deformation of the memory alloy causes the ball valve to close, which facilitates the heat dissipation of the body and improves the stability of the output voltage.

[0016] Preferably, it also includes a baffle door, wherein one end of the ventilation pipe away from the water pool is fixedly connected to the outer wall of the dustproof net away from the cabinet, the ventilation pipe is connected to the upper air inlet, and the baffle door is slidably connected to the groove wall of the installation groove, the baffle door is provided with an air outlet, and the baffle door is used to cover the lower air inlet.

[0017] By adopting the above technical solution, in rainy and snowy weather, the baffle covers the lower air inlet, reducing the probability of external rainwater entering the installation groove, protecting the main body, and extending the service life of the main body.

[0018] Preferably, it also includes a control component, which includes a support block, a support spring, a water storage box and a transmission member, the water pool is arranged on a side of the water tank away from the cabinet door, the outer wall of the water pool facing away from the water tank is provided with an overflow port, the overflow port is connected to the water storage tank, the support block is fixedly connected to the outer wall of the cabinet body facing away from the cabinet door, the upper end of the support block is provided with a support groove, the water storage box is slidably connected to the groove wall of the support groove, the upper end of the water storage box is provided with a water storage groove, the water storage groove is used to receive water flowing out of the overflow port, one end of the support spring is fixedly connected to the groove bottom of the support groove, the other end of the support spring is fixedly connected to the lower end of the water storage box, and the water storage box is connected to the baffle door through a transmission member.

[0019] By adopting the above technical solution, when there is too much water stored in the water storage box, the baffle covers the air inlet, and water will accumulate in the water storage box in rainy and snowy weather. When the temperature of the main body is continuously too high, the water in the water tank flows into the pool and then flows into the water storage box through the overflow port, which will also cause water to accumulate in the water storage box, partially blocking the air inlet, and only controlling the air with lowered temperature passing through the water surface to enter the installation groove, thereby facilitating heat dissipation.

[0020] Preferably, the transmission member includes a second rack, a second gear, a third rack and a push rod, the cabinet body is provided with a accommodating cavity, the accommodating cavity is arranged below the mounting groove, the accommodating cavity and the mounting groove are connected through a through opening, the accommodating cavity is connected to the supporting groove, one end of the second rack is fixedly connected to the lower end of the water storage box, the second gear rotates around its own axis and is connected to the groove wall of the supporting groove, the rotation axis of the second gear is perpendicular to the baffle door, one end of the push rod is fixedly connected to the baffle door, the other end of the push rod is fixedly connected to the third rack after passing through the through opening, the third rack and the second gear are both meshed with the second gear, and when the water storage box slides downward, the baffle door moves to block the air inlet.

[0021] By adopting the above technical solution, the position of the door is automatically controlled by the transmission member while the water storage box slides, which has a simple structure and is easy to operate.

[0022] Preferably, it also includes a cleaning component, which includes a support plate, a reciprocating screw, a guide rod and a scraper, the support plate is fixedly connected to the outer wall of the cabinet, the reciprocating screw is rotatably connected to the support plate around its own axis, the rotation axis of the reciprocating screw is vertical, the guide rod is fixedly connected to the support plate, the axis of the guide rod is vertical, one end of the scraper is provided with a guide port, the other end of the scraper is provided with a connecting port, the reciprocating screw is threadedly connected to the inner wall of the connecting port, the guide rod is slidably connected to the inner wall of the guide port, the scraper abuts the dustproof net, and the reciprocating screw is connected to the drive shaft of the fan through a synchronization member.

[0023] By adopting the above technical solution, the dustproof net is cleaned. In rainy and snowy weather, the scraper can push water away from the outer wall of the cabinet. The water evaporates and absorbs the heat of the cabinet, which is convenient for heat dissipation.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. The main body is set in a protective cabinet, which reduces the contact between the main body and external dust and impurities. The rotation of the fan allows external gas to enter the installation slot through the air inlet and then be discharged from the air outlet, thereby improving the air flow in the installation slot, facilitating the heat dissipation of the main body and improving the stability of the output voltage;

[0026] 2. A part of the air entering the air inlet first passes through the water surface of the water tank. The air passing through the water surface has a lower temperature, which is convenient for heat dissipation of the body. The absorbent cotton is used to absorb water in the air to protect the body;

[0027] 3. When the body temperature rises to the deformation temperature of the memory alloy, the deformation of the memory alloy drives the sliding rod to slide, causing the gear to rotate and the ball valve to open. When the body temperature drops to the deformation temperature of the memory alloy, the deformation of the memory alloy causes the ball valve to close, which is convenient for heat dissipation of the body and improves the stability of the output voltage. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of an ultra-low voltage regulated power supply.

[0029] Figure 2 It is a schematic diagram of the internal structure of an ultra-low voltage regulated power supply after being cut open.

[0030] Figure 3 It is a schematic diagram of the internal structure of an ultra-low voltage regulated power supply after being cut open, mainly used to display the air inlet, air outlet, baffle and control components.

[0031] Figure 4 It is a schematic diagram of the internal structure of an ultra-low voltage regulated power supply after being cut open, mainly used to display the heat dissipation components and control components.

[0032] Figure 5 It is a cross-sectional view of an ultra-low voltage regulated power supply.

[0033] Description of reference numerals: 1. protection cabinet; 11. cabinet body; 111. mounting groove; 1111. trapezoidal groove; 112. air inlet; 113. air outlet; 114. accommodating chamber; 115. through-hole; 116. sliding opening; 117. placement groove; 12. cabinet door; 2. dust screen; 3. body; 4. fan; 5. heat dissipation component; 51. water tank; 511. water outlet; 52. water pool; 521. water storage tank; 522. water inlet; 523. overflow; 53. ventilation pipe; 54. absorbent cotton; 55. water pipe; 56. ball valve; 57. memory alloy; 58. sliding rod; 591. first rack; 592. first gear; 6. stopper; 61. Air outlet; 62. Trapezoidal block; 7. Control assembly; 71. Support block; 711. Support groove; 72. Support spring; 73. Water storage box; 731. Water storage tank; 74. Transmission member; 741. Second rack; 742. Second gear; 743. Third rack; 744. Push rod; 8. Cleaning assembly; 81. Shield plate; 82. Support plate; 83. Reciprocating screw rod; 84. Guide rod; 85. Scraper; 851. Guide port; 852. Connecting port; 86. Synchronous member; 861. Synchronous shaft; 862. First bevel gear; 863. Second bevel gear; 864. First synchronous wheel; 865. Second synchronous wheel; 866. Synchronous belt. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-5 This application is described in further detail.

[0035] The present application embodiment discloses an ultra-low voltage stabilized power supply. Figure 1 and Figure 2 The ultra-low voltage regulated power supply includes a protection cabinet 1, a dustproof net 2, a body 3, a fan 4, a heat dissipation component 5, a baffle 6, a control component 7 and a cleaning component 8.

[0036] Reference Figure 1 and Figure 3The protection cabinet 1 includes a cabinet body 11 and a cabinet door 12. A mounting groove 111 is provided on one side of the cabinet body 11. One end of the cabinet door 12 is hinged to the groove wall of the mounting groove 111. The hinge axis of the cabinet door 12 is vertical. The cabinet door 12 is used to cover the groove of the mounting groove 111. An air inlet 112 is provided on one side wall of the cabinet body 11. A plurality of air inlets 112 are provided. The plurality of air inlets 112 are arrayed on the side wall of the cabinet body 11. An air outlet 113 is provided on another side wall of the cabinet body 11. A plurality of air outlets 113 are provided. The plurality of air outlets 113 are arrayed on the side wall of the cabinet body 11. The air inlet 112 and the air outlet 113 are both connected to the mounting groove 111. The cabinet body 11 is provided with a receiving cavity 114. The receiving cavity 114 is provided below the mounting groove 111. The receiving cavity 114 and the mounting groove 111 are connected through a through hole 115. The dustproof net 2 is fixedly connected to the outer wall of the cabinet 11 . Two dustproof nets 2 are provided, and the two dustproof nets 2 are used to cover the air inlet 112 and the air outlet 113 respectively.

[0037] Reference Figure 3 The body 3 and the fan 4 are both fixedly connected to the upward groove wall of the installation groove 111. The fan 4 is arranged on the side of the body 3 close to the air inlet 112. There are multiple fans 4, and the multiple fans 4 are evenly spaced along the height direction of the cabinet 11. The housings of adjacent fans 4 are fixedly connected. The fan 4 is used to accelerate the outside air to enter the installation groove 111 from the air inlet 112 and then be discharged from the air outlet 113.

[0038] Reference Figure 2 and Figure 4 The heat dissipation component 5 includes a water tank 51, a water pool 52, a ventilation pipe 53, a water absorbent cotton 54, a water pipe 55, a ball valve 56, a memory alloy 57, a sliding rod 58, a first rack 591 and a first gear 592.

[0039] The water tank 51 and the water pool 52 are fixedly connected to the upper end of the cabinet body 11. The water pool 52 is arranged on the side of the water tank 51 away from the cabinet door 12. The outer wall of the ventilation pipe 53 is fixedly connected to the upper end of the water pool 52. A water storage tank 521 is arranged at the upper end of the water pool 52. One end of the ventilation pipe 53 faces the water storage tank 521. The other end of the ventilation pipe 53 is connected to the upper air inlet 112. One end of the ventilation pipe 53 away from the water pool 52 is fixedly connected to the outer wall of the dustproof net 2 away from the cabinet body 11, and the absorbent cotton 54 is fixedly connected to the inner wall of the ventilation pipe 53.

[0040] Reference Figure 4A water outlet 511 is provided at the lower end of the water tank 51, a water inlet 522 is provided on the outer wall of the water pool 52, the water inlet 522 is connected to the water storage tank 521, one end of the water pipe 55 is coaxially fixedly connected to the inner wall of the water outlet 511, and the other end of the water pipe 55 is coaxially fixedly connected to the inner wall of the water inlet 522, the height of the water outlet 511 is greater than or equal to the height of the water inlet 522, the ball valve 56 rotates around its own axis and is connected to the inner wall of the water pipe 55, the rotation axis of the ball valve 56 is horizontal, and the ball valve 56 is used to control the on and off of the water pipe 55.

[0041] The lower end of the memory alloy 57 is fixedly connected to the upper end of the body 3, the upper end of the memory alloy 57 is fixedly connected to the sliding rod 58, the upper end of the cabinet 11 is provided with a sliding port 116, the sliding rod 58 is slidably connected to the inner wall of the sliding port 116, the first rack 591 is fixedly connected to the upper end of the sliding rod 58, the first gear 592 is coaxially fixedly connected to the valve stem of the ball valve 56, and the first rack 591 is meshed with the first gear 592. When the temperature of the body 3 rises to the deformation temperature of the memory alloy 57, the memory alloy 57 is deformed and elongated, the sliding rod 58 slides upward, the sliding of the first rack 591 drives the first gear 592 to rotate, and the ball valve 56 opens. When the temperature of the body 3 drops to the deformation temperature of the memory alloy 57, the memory alloy 57 is deformed and contracted, the sliding rod 58 slides downward, and the ball valve 56 is closed.

[0042] Reference Figure 3 The blocking door 6 is slidably connected to the groove wall of the installation groove 111. The blocking door 6 is provided with an air outlet 61, which is a strip-shaped outlet. The length direction of the air outlet 61 is parallel to the height direction of the cabinet 11. There are multiple air outlets 61. The length direction of the blocking door 6 is parallel to the length direction of the air outlet 61. The multiple air outlets 61 are evenly spaced along the width direction of the blocking door 6. There are two blocking doors 6, one blocking door 6 is used to cover the lower air inlet 112, and the other blocking door 6 is used to cover the lower air outlet 113. A trapezoidal block 62 is fixedly connected to one end of the blocking door 6 facing the groove wall of the installation groove 111. The groove wall of the installation groove 111 is provided with a trapezoidal groove 1111. The length direction of the trapezoidal groove 1111 is parallel to the width direction of the blocking door 6. The trapezoidal block 62 is slidably embedded in the trapezoidal groove 1111.

[0043] Reference Figure 3 and Figure 4The control assembly 7 includes a support block 71, a support spring 72, a water storage box 73 and a transmission member 74. The transmission member 74 includes a second rack 741, a second gear 742, a third rack 743 and a push rod 744. The outer wall of the pool 52 away from the water tank 51 is provided with an overflow port 523, and the overflow port 523 is connected to the water storage tank 521. The height of the overflow port 523 is less than the height of the water inlet 522. The end of the pool 52 away from the water tank 51 is flush with the end of the cabinet 11 away from the cabinet door 12. The end of the cabinet 11 away from the cabinet door 12 is provided with a placement groove 117. The bottom of the placement groove 117 is connected to the storage tank 521. Cavity 114, the support block 71 is fixedly connected to the bottom of the placement groove 117, the upper end of the support block 71 is provided with a support groove 711, the support groove 711 is connected to the accommodating cavity 114, the water storage box 73 is slidably connected to the groove wall of the support groove 711, the sliding direction of the water storage box 73 is vertical, the upper end of the water storage box 73 is provided with a water storage tank 731, the water storage tank 731 is used to receive the water flowing out of the overflow port 523, one end of the support spring 72 is fixedly connected to the bottom of the support groove 711, the other end of the support spring 72 is fixedly connected to the lower end of the water storage box 73, and the water storage box 73 is connected to the baffle 6 through a transmission member 74.

[0044] One end of the second rack 741 is fixedly connected to the lower end of the water storage box 73, the second gear 742 rotates around its own axis and is connected to the groove wall of the support groove 711, the rotation axis of the second gear 742 is perpendicular to the baffle door 6, one end of the push rod 744 is fixedly connected to the baffle door 6, the other end of the push rod 744 passes through the through opening 115 and is fixedly connected to the third rack 743, the third rack 743 and the second gear 742 are both meshed with the second gear 742, when the water storage box 73 slides downward, the baffle door 6 moves to block the lower air inlet 112 and the air outlet 113.

[0045] Reference Figure 2 and Figure 5 The cleaning assembly 8 includes a baffle plate 81, a support plate 82, a reciprocating screw rod 83, a guide rod 84, a scraper 85 and a synchronous member 86. There are two cleaning assemblies 8, and the two cleaning assemblies 8 are respectively arranged on both sides of the cabinet 11. The cleaning assemblies 8 are arranged one by one with the dustproof net 2. The baffle plate 81 and the support plate 82 are both fixedly connected to the outer wall of the cabinet 11, the height of the baffle plate 81 is greater than the height of the dustproof net 2, and the height of the support plate 82 is less than the height of the dustproof net 2. The two ends of the reciprocating screw rod 83 are respectively connected to the support plate 82 and the baffle plate 81 around their own axes, and the rotation axis of the reciprocating screw rod 83 is vertical. The two ends of the guide rod 84 are respectively fixedly connected to the support plate 82 and the baffle plate 81, and the axis of the guide rod 84 is vertical. The reciprocating screw rod 83 and the guide rod 84 are arranged on both sides of the dustproof net 2, one end of the scraper 85 is provided with a guide port 851, and the other end of the scraper 85 is provided with a connecting port 852, the reciprocating screw rod 83 is threadedly connected to the inner wall of the connecting port 852, the guide rod 84 is slidably connected to the inner wall of the guide port 851, and the scraper 85 abuts against the dustproof net 2.

[0046] The reciprocating screw rod 83 is connected to the driving shaft of the fan 4 through a synchronous member 86. The synchronous member 86 includes a synchronous shaft 861, a first bevel gear 862, a second bevel gear 863, a first synchronous wheel 864, a second synchronous wheel 865 and a synchronous belt 866. The synchronous shaft 861 is connected to the groove wall of the mounting groove 111 by rotating around its own axis. The rotation axis of the synchronous shaft 861 is vertical. The first bevel gear 862 is coaxially fixedly connected to the driving shaft of the fan 4 with the lowest height. The second bevel gear 863 is coaxially fixedly connected to the upper end of the synchronous shaft 861. The first bevel gear 862 is meshed with the second bevel gear 863. The lower end of the reciprocating screw rod 83 extends into the accommodating chamber 114. The first synchronous wheel 864 is coaxially fixedly connected to the lower end of the reciprocating screw rod 83. The second synchronous wheel 865 is coaxially fixedly connected to the lower end of the synchronous shaft 861. The synchronous belt 866 is sleeved on the outer periphery of the first synchronous wheel 864 and the second synchronous wheel 865.

[0047] The implementation principle of an ultra-low voltage stabilized power supply in the embodiment of the present application is as follows: the fan 4 rotates to accelerate the air flow in the installation slot 111, which is convenient for heat dissipation of the body 3. At the same time, the reciprocating screw rod 83 is driven to rotate by the synchronous member 86, so that the scraper 85 slides up and down to clean the dust screen 2 to reduce blockage. When the heat dissipation is poor and the temperature of the body 3 is too high, the memory alloy 57 reaches the preset temperature and stretches to push the sliding rod 58 to move, so that the first rack 591 moves, the first gear 592 rotates, the ball valve 56 opens, and the water in the water tank 51 enters the pool 52. The air with a lower temperature passing through the water surface enters from the upper air inlet. The water flows into the water tank 731, causing the water box 73 to slide downward, and the transmission member 74 drives the baffle 6 to slide to block the lower air inlet 112 and the air outlet 113, so that only the air with lower temperature passing through the water surface enters the installation groove 111, thereby cooling the main body 3. When it is rainy or snowy outside, the water in the water tank 731 controls the baffle 6 to close, thereby protecting the main body 3.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An ultra-low voltage stabilized power supply, characterized in that: The protective cabinet (1) comprises a cabinet body (11) and a cabinet door (12); a mounting groove (111) is provided on one side of the cabinet body (11); the cabinet door (12) is connected to the inner wall of the groove of the mounting groove (111); the cabinet door (12) is used to cover the groove of the mounting groove (111); an air inlet (112) is provided on one side wall of the cabinet body (11); an air outlet (113) is provided on the other side wall of the cabinet body (11); the air inlet (112) and the air outlet (113) are both connected to the mounting groove (111); the main body (3) and the fan (4) are both fixedly connected to the groove wall of the mounting groove (111) facing upward; and the fan (4) is arranged on a side of the main body (3) close to the air inlet (112); It also includes a dustproof net (2), the dustproof net (2) being fixedly connected to the outer wall of the cabinet (11), and the dustproof net (2) being used to cover the air inlet (112) and the air outlet (113); It also comprises a heat dissipation component (5), the heat dissipation component (5) comprising a water pool (52), a ventilation pipe (53) and water-absorbing cotton (54), the water pool (52) being fixedly connected to the upper end of the cabinet (11), the outer wall of the ventilation pipe (53) being fixedly connected to the upper end of the water pool (52), the upper end of the water pool (52) being provided with a water storage tank (521), one end of the ventilation pipe (53) facing the water storage tank (521), the other end of the ventilation pipe (53) being connected to the air inlet (112), and the water-absorbing cotton (54) being fixedly connected to the inner wall of the ventilation pipe (53); The heat dissipation assembly (5) further comprises a water tank (51), a water pipe (55) and a ball valve (56); the water tank (51) is fixedly connected to the upper end of the cabinet (11); one end of the water pipe (55) is connected to the water tank (51); the other end of the water pipe (55) is connected to the water storage tank (521); the ball valve (56) is connected to the inner wall of the water pipe (55) by rotating around its own axis; the ball valve (56) is used to control the on and off of the water pipe (55); The heat dissipation assembly (5) further comprises a memory alloy (57), a sliding rod (58), a first rack (591) and a first gear (592); one end of the memory alloy (57) is fixedly connected to the upper end of the body (3); the other end of the memory alloy (57) is fixedly connected to the sliding rod (58); a sliding opening (116) is provided at the upper end of the cabinet (11); the sliding rod (58) is slidably connected to the inner wall of the sliding opening (116); the first rack (591) is fixedly connected to the upper end of the sliding rod (58); the first gear (592) is coaxially fixedly connected to the valve stem of the ball valve (56); and the first rack (591) is meshed with the first gear (592); It also includes a baffle (6), one end of the ventilation pipe (53) away from the pool (52) is fixedly connected to the outer wall of the dustproof net (2) away from the cabinet (11), the ventilation pipe (53) is connected to the upper air inlet (112), the baffle (6) is slidably connected to the groove wall of the installation groove (111), the baffle (6) is provided with an air outlet (61), and the baffle (6) is used to cover the lower air inlet (112); The control assembly (7) further comprises a control assembly (7), the control assembly (7) comprising a support block (71), a support spring (72), a water storage box (73) and a transmission member (74); the water pool (52) is arranged on a side of the water tank (51) away from the cabinet door (12); an outer wall of the water pool (52) away from the water tank (51) is provided with an overflow port (523); the overflow port (523) is connected to the water storage tank (521); the support block (71) is fixedly connected to an outer wall of the cabinet body (11) away from the cabinet door (12); the support block (71) A support groove (711) is provided at the upper end of the water storage box (73), the water storage box (73) is slidably connected to the groove wall of the support groove (711), a water storage groove (731) is provided at the upper end of the water storage box (73), the water storage groove (731) is used to receive water flowing out of the overflow port (523), one end of the support spring (72) is fixedly connected to the groove bottom of the support groove (711), the other end of the support spring (72) is fixedly connected to the lower end of the water storage box (73), and the water storage box (73) is connected to the blocking door (6) via a transmission member (74).

2. The ultra-low voltage regulated power supply according to claim 1, characterized in that: The transmission member (74) comprises a second rack (741), a second gear (742), a third rack (743) and a push rod (744); the cabinet (11) is provided with a receiving chamber (114); the receiving chamber (114) is provided below the mounting groove (111); the receiving chamber (114) and the mounting groove (111) are connected via a through hole (115); the receiving chamber (114) is connected to the supporting groove (711); one end of the second rack (741) is fixedly connected to the lower end of the water storage box (73); the second gear ( The second gear (742) is connected to the groove wall of the support groove (711) by rotating around its own axis, the rotation axis of the second gear (742) is perpendicular to the baffle door (6), one end of the push rod (744) is fixedly connected to the baffle door (6), and the other end of the push rod (744) is fixedly connected to the third rack (743) after passing through the through opening (115), the third rack (743) and the second gear (742) are both meshed with the second gear (742), and when the water storage box (73) slides downward, the baffle door (6) moves to block the air inlet (112).

3. The ultra-low voltage regulated power supply according to claim 1, characterized in that: The cleaning assembly (8) further comprises a cleaning assembly (8), the cleaning assembly (8) comprising a support plate (82), a reciprocating screw rod (83), a guide rod (84) and a scraper (85), the support plate (82) being fixedly connected to the outer wall of the cabinet (11), the reciprocating screw rod (83) being rotatably connected to the support plate (82) about its own axis, the rotation axis of the reciprocating screw rod (83) being vertical, the guide rod (84) being fixedly connected to the support plate (82), the axis of the guide rod (84) being vertical, one end of the scraper (85) being provided with a guide opening (851), the other end of the scraper (85) being provided with a connecting opening (852), the reciprocating screw rod (83) being threadedly connected to the inner wall of the connecting opening (852), the guide rod (84) being slidably connected to the inner wall of the guide opening (851), the scraper (85) being in contact with the dust screen (2), and the reciprocating screw rod (83) being connected to the drive shaft of the fan (4) via a synchronous member (86).

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