Server cabinet based on semiconductor refrigeration and desiccant self-regeneration

Abstract

The application discloses a kind of based on semiconductor refrigeration and desiccant self-regeneration server cabinet, including cabinet body, sound-light alarm mechanism, heat dissipation cooling mechanism and dry dehumidification mechanism.Heat dissipation cooling mechanism simultaneously generates cold and hot airflow using semiconductor refrigeration sheet, cold air is used to cool IT equipment, and hot air is used to regenerate desiccant;Dry dehumidification mechanism realizes continuous dehumidification and self-regeneration cycle by the alternate work of double dehumidification boxes.Sound-light alarm mechanism uses thermosensitive glass tube as temperature trigger element, and automatically breaks down circuit when overheating, triggers sound-light alarm, without external power supply, high reliability.Cabinet also integrates smoke alarm, air guide heat dissipation and man-machine interaction panel, effectively prevent condensation, fire and heat accumulation.The application solves the problems of traditional cabinet, such as easy condensation in high temperature and high humidity environment, desiccant needs manual maintenance, electronic alarm failure, etc., has the advantages of energy saving, maintenance free, safe and reliable, etc., and is suitable for various harsh operating environments.

Description

Technical Field

[0001] This invention relates to the technical field of server racks, and more specifically to a server rack based on semiconductor refrigeration and self-regenerating desiccant. Background Technology

[0002] Currently, server racks generally use air cooling or air conditioning systems for heat dissipation. However, in high temperature and high humidity environments, simply cooling can cause moisture in the air to condense on the surface of the equipment, leading to short circuits or corrosion risks.

[0003] Although some solutions introduce desiccants to assist in dehumidification, the desiccants need to be manually replaced or regenerated by an external heat source after they are saturated, making it difficult to achieve continuous, maintenance-free operation.

[0004] In addition, existing fire or overheat alarms mostly rely on electronic sensors and external power supplies, which are prone to failure in extreme situations such as power outages and circuit failures, and lack an inherently safe mechanical emergency response mechanism.

[0005] Therefore, there is an urgent need for an integrated cabinet system that can simultaneously solve three major problems: efficient heat dissipation and anti-condensation dehumidification, self-sustaining regeneration of desiccant, and highly reliable self-starting alarm. Summary of the Invention

[0006] The purpose of this invention is to provide a server rack based on semiconductor refrigeration and self-regenerating desiccant, so as to solve the above-mentioned defects caused by the prior art.

[0007] A server rack based on semiconductor refrigeration and self-regenerating desiccant, comprising: The rack itself; An audible and visual alarm mechanism is provided, which is located on the top of the cabinet body and includes an audible and visual alarm device and a thermal glass tube. The thermal glass tube is connected in series with the power supply line for the audible and visual alarm device. When the thermal glass tube breaks due to heat, the audible and visual alarm device is powered on and emits both audible and visual alarm signals. The heat dissipation and cooling mechanism is located at the bottom of the cabinet body and includes a semiconductor cooling chip, a first suction fan and a second suction fan. The hot and cold ends of the semiconductor cooling chip generate cold and heat respectively. The first suction fan blows air towards the cold end to obtain cold air and uses the cold air to cool the IT equipment inside the cabinet body. The second suction fan blows air towards the hot end to obtain hot air and exhausts the hot air to the outside of the cabinet body. A drying and dehumidification mechanism is provided at the bottom of the cabinet body and includes a dehumidification box. The dehumidification box is filled with desiccant and used to absorb moisture in the cold air, and hot air is used to remove the moisture from the desiccant.

[0008] Preferably, the cabinet body includes a mounting cabinet, an upper cabinet door, a middle cabinet door, and a lower cabinet door. The upper part of the mounting cabinet has symmetrically distributed heat dissipation vents, and the lower part of the mounting cabinet has symmetrically distributed heat exhaust vents. The upper cabinet door, the middle cabinet door, and the lower cabinet door are respectively hinged to the upper, middle, and lower parts of the mounting cabinet. The lower cabinet door has evenly distributed air intakes, and an air intake fan is installed inside the air intake.

[0009] Preferably, the audible and visual alarm is mounted on the upper side of the mounting cabinet via a fixing plate. A power line is electrically connected to the lower part of the audible and visual alarm, and a female terminal is connected to the other end of the power line. The female terminal is mounted on the top of the mounting cabinet via a T-shaped fixing plate. Connecting posts are slidably connected to the left and right ends of the fixing plate. A T-shaped movable plate is connected to the rear end of the pair of connecting posts. A male terminal is mounted in the center of the movable plate, and a power supply line is electrically connected to the rear of the male terminal. The thermal glass tube is connected between the fixing plate and the movable plate, and a return spring is provided on both the connecting post and the thermal glass tube.

[0010] Preferably, the cooling mechanism comprises several units arranged in a rectangular array. The semiconductor cooling chip is embedded parallel to the heat insulation plate. The hot and cold ends of the semiconductor cooling chip are respectively in contact with a cooling plate and a heat dissipation plate. The cooling plate is embedded parallel to the middle of an L-shaped mounting tube. The lower and upper parts of the mounting tube are respectively provided with an air intake port and an air exhaust port, and an air intake fan is installed at one of the air intake ports. The heat dissipation plate is embedded parallel to the middle of a second mounting tube. The lower and upper parts of the second mounting tube are respectively provided with an air intake port and an air exhaust port, and an air intake fan is installed at the second air intake port.

[0011] Preferably, an electric motor is mounted above the first and second mounting pipes via a motor mount. The output end of the electric motor is rotatably connected to a U-shaped rotating frame, and a pair of dehumidifying boxes are symmetrically connected to both ends of the rotating frame. Ventilation holes are evenly distributed on both the inner and outer sides of the dehumidifying boxes. An mounting box is installed at the bottom of the mounting cabinet, and several air inlets are evenly distributed on the front side of the mounting box. Two rows of air outlets are symmetrically distributed on the top of the mounting box, and a first air vent is connected to the inner side of each air outlet. An air vent is provided on the inner side of the first air vent. An exhaust pipe is horizontally installed inside the mounting box via several fixed rods, and several second air vents are evenly distributed on the front and rear sides of the exhaust pipe.

[0012] Preferably, the upper part of the cabinet door is provided with multiple monitoring panels, and the lower part is provided with multiple control buttons, each of the control buttons being electrically connected to the corresponding monitoring panel.

[0013] Preferably, the top of the installation cabinet is fixed with an inverted "V"-shaped air guide plate.

[0014] Preferably, a smoke detector is installed in the center of the lower side of the air guide plate.

[0015] Preferably, an elastic or plastic shielding plate is connected between the fixed plate and the movable plate, and the shielding plate is located directly above the thermosensitive glass tube.

[0016] Compared with the prior art, the present invention has the following advantages: 1. Achieve coordinated management of cooling and heating and anti-condensation dehumidification: Provide a stable cold source to cool IT equipment through semiconductor refrigeration, while using its hot end waste heat to drive the desiccant desorption and regeneration. After being dried, the cold air is sent into the cabinet, effectively avoiding the generation of condensate and taking into account both cooling and humidity control.

[0017] 2. The desiccant can be recycled without manual intervention: It adopts a dual dehumidification box alternating operation and regeneration structure, driven by a motor to switch cycles. The system uses its own generated hot air to complete the online regeneration of the desiccant, achieving long-term maintenance-free operation.

[0018] 3. Features a highly reliable passive overheat alarm function: It adopts a mechanically triggered audible and visual alarm with a thermistor glass tube, which does not require an external power supply. When the temperature rises abnormally, it automatically breaks and connects the circuit, ensuring that it can still issue an alarm in time under extreme conditions, thus improving the intrinsic safety level. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention.

[0020] Figure 2 This is a first-person structural diagram of the entire server rack.

[0021] Figure 3 This is a structural schematic diagram of the entire cabinet from a second perspective.

[0022] Figure 4 This is a three-dimensional structural diagram of the overall sound and light alarm mechanism.

[0023] Figure 5 This is a three-dimensional structural diagram of the overall heat dissipation and cooling mechanism.

[0024] Figure 6 This is a schematic diagram of the overall explosion of the heat dissipation and cooling mechanism.

[0025] Figure 7 This is a three-dimensional structural diagram of the drying and dehumidification mechanism.

[0026] Figure 8 This is a schematic diagram of the drying box in a drying and dehumidification system.

[0027] Figure 9 This is a schematic diagram of the exhaust pipe in a drying and dehumidifying mechanism.

[0028] in: 10-Rack body; 101-Mounting cabinet; 101a-Heat vent; 101b-Exhaust vent; 102-Upper cabinet door; 103-Middle cabinet door; 104-Lower cabinet door; 104a-Air intake; 105-Monitoring panel; 106-Control buttons; 107-Exhaust fan; 108-Air guide plate; 109-Smoke alarm; 20-Audible and visual alarm mechanism; 201-Audible and visual alarm device; 202-Fixing plate; 203-Power supply wire; 204-Female terminal; 205-Fixing plate; 206-Connecting post; 207-Modible plate; 208-Male terminal; 209-Power supply wire; 210-Thermosensitive glass tube; 211-Reset spring; 212-Shielding plate; 30-Heat dissipation and cooling mechanism; 301-Semiconductor refrigeration chip; 302-Insulation board; 303-Cooling plate; 304-Heat dissipation plate; 305-Mounting pipe one; 305a-Intake port one; 305b-Exhaust port one; 306-Mounting pipe two; 306a-Intake port two; 306b-Exhaust port two; 307-Suction fan one; 308-Suction fan two; 40-Drying and dehumidifying mechanism; 401-Motor; 402-Motor base; 403-Rotating frame; 404-Dehumidifying box; 404a-Ventilation hole; 405-Ventilation pipe one; 405a-Ventilation port; 406-Ventilation pipe two; 407-Exhaust pipe; 408-Fixing rod; 409-Mounting box; 409a-Air inlet; 409b-Air outlet. Detailed Implementation

[0029] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0030] like Figures 1 to 9 As shown, a server rack based on semiconductor refrigeration and self-regenerating desiccant includes: Cabinet body 10; The sound and light alarm mechanism 20 is located on the top of the cabinet body 10 and includes a sound and light alarm 201 and a thermal glass tube 210. The thermal glass tube 210 is connected in series to the power supply line of the sound and light alarm 201. When the thermal glass tube 210 is heated and breaks, the sound and light alarm 201 is powered on and emits both sound and light alarm signals. The heat dissipation and cooling mechanism 30 is located at the bottom of the cabinet body 10 and includes a semiconductor cooling chip 301, a first suction fan 307 and a second suction fan 308. The hot and cold ends of the semiconductor cooling chip 301 generate cold and heat respectively. The first suction fan 307 blows air towards the cold end to obtain cold air and uses the cold air to cool the IT equipment inside the cabinet body 10. The second suction fan 308 blows air towards the hot end to obtain hot air and exhausts the hot air outside the cabinet body 10. A drying and dehumidification mechanism 40 is provided at the bottom of the cabinet body 10 and includes a dehumidification box 404. The dehumidification box 404 is filled with desiccant and is used to absorb moisture in cold air and remove moisture from the desiccant using hot air.

[0031] In this embodiment, the cabinet body 10 includes a mounting cabinet 101, an upper cabinet door 102, a middle cabinet door 103, and a lower cabinet door 104. The upper part of the mounting cabinet 101 has symmetrically distributed heat dissipation vents 101a, and the lower part of the mounting cabinet 101 has symmetrically distributed heat exhaust vents 101b. The upper cabinet door 102, middle cabinet door 103, and lower cabinet door 104 are respectively hinged to the upper, middle, and lower parts of the mounting cabinet 101. The lower cabinet door 104 has evenly distributed air intake vents 104a, and an air intake fan 107 is installed inside the air intake vents 104a. The air intake fan 107 draws external air into the lower part of the mounting cabinet 101, using the external air to perform simple heat dissipation on the IT equipment in the mounting cabinet 101, and the absorbed heat is exhausted through the heat dissipation vents 101a on both sides.

[0032] In this embodiment, the audible and visual alarm 201 is mounted on the upper side of the mounting cabinet 101 via a fixing plate 202. A power supply wire 203 is electrically connected to the lower part of the audible and visual alarm 201, and a female terminal 204 is connected to the other end of the power supply wire 203. The female terminal 204 is mounted on the top of the mounting cabinet 101 via a T-shaped fixing piece 205. Connecting posts 206 are slidably connected to the left and right ends of the fixing piece 205. A T-shaped movable piece 207 is connected to the rear end of the pair of connecting posts 206. A male terminal 208 is centrally mounted on the movable piece 207, and a power supply line 209 is electrically connected to the rear of the male terminal 208. The thermal glass tube 210 is connected between the fixing piece 205 and the movable piece 207, and a return spring 211 is provided on both the connecting post 206 and the thermal glass tube 210. When the heat-sensitive glass tube 210 breaks due to heat, under the action of the connecting column 206 and the return spring 211, the movable plate 207 will quickly approach the fixed plate 205, and the male terminal 208 and the female terminal 204 will be inserted together. The power supply line composed of the power supply wire 203 and the power supply line 209 will be connected, and the sound and light alarm 201 will be powered on and emit sound and light alarm signals. In this embodiment, the cooling mechanism 30 is provided in a rectangular array. The semiconductor cooling chip 301 is embedded in the heat insulation plate 302 in parallel. The hot and cold ends of the semiconductor cooling chip 301 are respectively in contact with the cooling plate 303 and the heat dissipation plate 304. The cooling plate 303 is embedded in the middle of the L-shaped mounting tube 305 in parallel. The lower and upper parts of the mounting tube 305 are respectively provided with an air intake 305a and an air exhaust 305b, and an air intake fan 307 is installed at the air intake 305a. The heat dissipation plate 304 is embedded in the middle of the mounting tube 306 in parallel. The lower and upper parts of the mounting tube 306 are respectively provided with an air intake 306a and an air exhaust 306b, and an air intake fan 308 is installed at the air intake 306a. The hot and cold ends of the semiconductor cooling chip 301 generate cold and heat respectively. Cold air is obtained by blowing air into the cooling plate 303 that is in contact with the cold end through the suction fan 307, and the cold air is discharged through the exhaust port 305b. Hot air is obtained by blowing air into the heat sink 304 that is in contact with the hot end through the suction fan 308, and the hot air is discharged through the exhaust port 305b.

[0033] In this embodiment, a motor 401 is mounted above the first mounting pipe 305 and the second mounting pipe 306 via a motor base 402. The output end of the motor 401 is rotatably connected to a U-shaped rotating frame 403, and a pair of dehumidifying boxes 404 are symmetrically connected to both ends of the rotating frame 403. Ventilation holes 404a are evenly distributed on both the inner and outer sides of the dehumidifying box 404. A mounting box 409 is mounted at the bottom of the mounting cabinet 101, and several air inlets 409a are evenly distributed on the front side of the mounting box 409. Two rows of air outlets 409b are symmetrically distributed on the top of the mounting box 309, and a first vent pipe 405 is connected to the inner side of each air outlet 409b. A vent 405a is provided on the inner side of the first vent pipe 405. An exhaust pipe 407 is horizontally mounted inside the mounting box 309 via several fixing rods 408. Several second vent pipes 406 are evenly distributed on both the front and rear sides of the exhaust pipe 407. The motor 401 drives a set of dehumidifier boxes 404 on the rotating frame 403 to rotate. When one dehumidifier box 404 stops rotating between the exhaust port 305 (exhaust port 305b) of the first mounting pipe 305 and the vent 405 (vent 405a), the other dehumidifier box 404 stops rotating between the exhaust port 306 (exhaust port 306b) of the second mounting pipe 306 and the vent 406 (port). The desiccant in the former dehumidifier box 404 will absorb the moisture in the cold air. The dry cold air enters the mounting cabinet 101 and carries away the heat generated by the IT equipment. Finally, it is discharged from the heat dissipation vents 101a on both sides. The desiccant in the latter dehumidifier box 404 will remove its own moisture under the action of hot air so that it can be recycled. In this embodiment, the upper part of the cabinet door 102 is provided with multiple monitoring panels 105, and the lower part is provided with multiple control buttons 106. Each control button 106 is electrically connected to the corresponding monitoring panel 105. The monitoring panels 105 allow maintenance personnel to intuitively view key parameters such as temperature, humidity, and operating status inside the cabinet, and quickly perform start / stop, reset, or mode switching operations through the nearby control buttons 106, improving human-machine interaction efficiency and on-site maintenance convenience.

[0034] In this embodiment, an inverted "V"-shaped air guide plate 108 is fixed to the top of the mounting cabinet 101. The air guide plate 108 can guide the hot air inside the mounting cabinet 101 to be discharged through the heat dissipation vents 101a on both sides.

[0035] In this embodiment, a smoke detector 109 is centrally mounted on the lower side of the air guide plate 108. The smoke detector 109 can monitor the smoke concentration inside the installation cabinet 101 in real time to achieve fire prevention.

[0036] In this embodiment, an elastic or plastic shielding plate 212 is connected between the fixed plate 205 and the movable plate 207, and the shielding plate 212 is located directly above the thermal glass tube 210. The shielding plate 212 can prevent the liquid inside the thermal glass tube 210 from splashing onto the male terminal 208 and the female terminal 204 in the event of a breakage.

[0037] The working principle of a server rack based on semiconductor refrigeration and self-regenerating desiccant: 1. Temperature detection and alarm triggering When the internal temperature of the installation cabinet 101 rises to the rated rupture temperature of the thermal glass tube 210, the thermal glass tube 210 ruptures due to heat. Under the action of the connecting column 206 and the return spring 211, the movable piece 207 moves towards the fixed piece 205, so that the male terminal 208 and the female terminal 204 are connected. The audible and visual alarm 201 is powered on and emits both audible and visual alarm signals to remind the staff to take measures.

[0038] 2. Active heat dissipation and cooling When the semiconductor cooling chip 301 is working, the cold end generates a low temperature and the hot end generates a high temperature; the first suction fan 307 blows air towards the cold end, sending the cooled air after cooling by the cooling plate 303 into the cabinet to cool down the IT equipment; the second suction fan 308 blows air towards the hot end, expelling the heated air after heating by the heat sink 304 from the outside of the cabinet to prevent heat from flowing back.

[0039] 3. Drying, dehumidification, and desiccant regeneration When cold air passes through dehumidifier box 404, the moisture in it is absorbed by the desiccant. At the same time, hot air passes through another dehumidifier box 404 in the regeneration zone, causing the desiccant in that zone to dehydrate and regenerate. Motor 401 drives rotating frame 403 to rotate periodically, so that the two dehumidifier boxes 404 work and regenerate alternately, ensuring long-term stable dehumidification effect.

[0040] 4. Smoke monitoring and fire early warning The smoke detector 109, installed below the air guide plate 108, continuously monitors the air quality inside the cabinet; once the smoke concentration exceeds the standard, it immediately issues an alarm signal to help determine whether an early fire has occurred.

[0041] 5. Airflow guidance and heat dissipation After the cold air carries away the heat, it will be effectively guided by the inverted "V"-shaped air guide plate 108 and discharged from the heat dissipation vents 101a on both sides, improving exhaust efficiency, preventing heat retention, and maintaining a stable internal temperature of the cabinet. After the hot air carries away the moisture in the desiccant, it will gather in the exhaust pipe 407 and be discharged from the heat exhaust port 101b of the installation cabinet 101, preventing heat retention and maintaining a stable internal temperature of the cabinet.

[0042] Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not exhaustive. All modifications within the scope of this invention or its equivalents are included in this invention.

Claims

1. A server rack based on semiconductor refrigeration and self-regenerating desiccant, characterized in that, include: Cabinet body (10); The sound and light alarm mechanism (20) is located on the top of the cabinet body (10) and includes a sound and light alarm (201) and a thermal glass tube (210). The thermal glass tube (210) is connected in series to the power supply line of the sound and light alarm (201). When the thermal glass tube (210) is heated and cracked, the sound and light alarm (201) is powered on and emits sound and light alarm signals. The heat dissipation and cooling mechanism (30) is located at the bottom of the cabinet body (10) and includes a semiconductor cooling chip (301), a first suction fan (307) and a second suction fan (308). The hot and cold ends of the semiconductor cooling chip (301) are cold and hot respectively. Cold air is obtained by blowing air towards the cold end through the first suction fan (307) and the cold air is used to cool the IT equipment in the cabinet body (10). Hot air is obtained by blowing air towards the hot end through the second suction fan (308) and the hot air is discharged to the outside of the cabinet body (10). A drying and dehumidifying mechanism (40) is provided at the bottom of the cabinet body (10) and includes a dehumidifying box (404). The dehumidifying box (404) is filled with desiccant and used to adsorb moisture in cold air and remove moisture from the desiccant using hot air.

2. A server rack based on semiconductor refrigeration and desiccant self-regeneration according to claim 1, characterized in that, The cabinet body (10) includes a mounting cabinet (101), an upper cabinet door (102), a middle cabinet door (103), and a lower cabinet door (104). The upper part of the mounting cabinet (101) has symmetrically distributed heat dissipation vents (101a), and the lower part of the mounting cabinet (101) has symmetrically distributed heat exhaust vents (101b). The upper cabinet door (102), the middle cabinet door (103), and the lower cabinet door (104) are respectively hinged to the upper, middle, and lower parts of the mounting cabinet (101). The lower cabinet door (104) has evenly distributed air intakes (104a), and an air intake fan (107) is installed on the inner side of the air intake (104a).

3. A server rack based on semiconductor refrigeration and desiccant self-regeneration according to claim 2, characterized in that, The audible and visual alarm (201) is mounted on the upper side of the mounting cabinet (101) via a fixing plate (202). A power supply wire (203) is electrically connected to the lower part of the audible and visual alarm (201), and a female terminal (204) is connected to the other end of the power supply wire (203). The female terminal (204) is mounted on the top of the mounting cabinet (101) via a T-shaped fixing piece (205). Connecting posts (206) are slidably connected to the left and right ends of the fixing piece (205). A T-shaped movable piece (207) is connected to the rear end of the pair of connecting posts (206). A male terminal (208) is installed in the center of the movable piece (207), and a power supply line (209) is electrically connected to the rear of the male terminal (208). The thermal glass tube (210) is connected between the fixing piece (205) and the movable piece (207), and a return spring (211) is provided on both the connecting post (206) and the thermal glass tube (210).

4. A server rack based on semiconductor refrigeration and desiccant self-regeneration according to claim 2, characterized in that, A number of the cooling mechanisms (30) are provided and distributed in a rectangular array. The semiconductor refrigeration chips (301) are parallely embedded in the heat insulation board (302). The cold and hot ends of the semiconductor refrigeration chips (301) are respectively in contact with a cooling plate (303) and a heat dissipation plate (304). The cooling plate (303) is parallely embedded in the middle of the L-shaped installation pipe one (305). An air suction port one (305a) and an air exhaust port one (305b) are respectively provided at the lower and upper parts of the installation pipe one (305), and an air suction fan one (307) is installed at the air suction port one (305a). The heat dissipation plate (304) is parallely embedded in the middle of the installation pipe two (306). An air suction port two (306a) and an air exhaust port two (306b) are respectively provided at the lower and upper parts of the installation pipe two (306), and an air suction fan two (308) is installed at the air suction port two (306a).

5. A server rack based on semiconductor refrigeration and desiccant self-regeneration according to claim 3, characterized in that, Above the installation pipe one (305) and the installation pipe two (306), a motor (401) is installed through a motor seat (402). The output end of the motor (401) is rotationally connected to a "冂"-shaped rotating frame (403), and a pair of dehumidification boxes (404) are symmetrically connected to both ends of the rotating frame (403). Ventilation holes (404a) are evenly distributed on both the inner and outer sides of the dehumidification boxes (404). An installation box (409) is installed at the bottom of the installation cabinet (101), and a number of air inlets (409a) are evenly distributed on the front side of the installation box (409). Two rows of air outlets (409b) are symmetrically distributed front and back at the top of the installation box (309), and an air duct one (405) is connected to the inner side of each air outlet (409b). An air vent (405a) is provided inside the air duct one (405). An exhaust pipe (407) is horizontally installed inside the installation box (309) through a number of fixing rods (408). A number of air ducts two (406) are evenly distributed on both the front and back sides of the exhaust pipe (407).

6. A server rack based on semiconductor refrigeration and desiccant self-regeneration according to claim 2, characterized in that, A number of monitoring panels (105) are provided at the upper part of the upper cabinet door (102), and a number of control buttons (106) are provided at the lower part. Each of the control buttons (106) is electrically connected to the corresponding monitoring panel (105).

7. A server rack based on semiconductor refrigeration and desiccant self-regeneration according to claim 2, characterized in that, An inverted "人"-shaped wind guiding plate (108) is fixed at the top of the installation cabinet (101).

8. A server rack based on semiconductor refrigeration and desiccant self-regeneration according to claim 7, characterized in that, A smoke alarm (109) is installed in the middle at the lower side of the wind guiding plate (108).

9. A server rack based on semiconductor refrigeration and desiccant self-regeneration according to claim 3, characterized in that, An elastic or plastic shielding piece (212) is connected between the fixed piece (205) and the movable piece (207), and the shielding piece (212) is located directly above the heat-sensitive glass tube (210).

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