Novel efficient intelligent dehumidification device for electrical cabinet

Abstract

The utility model discloses a novel efficient intelligent dehumidification device for an electrical cabinet, which relates to the technical field of dehumidification devices and comprises a shell, a detection chamber and a condensation chamber are arranged in the shell, a partition plate is arranged between the detection chamber and the condensation chamber, and a front air inlet and a rear air inlet are formed in the top of the shell. The front air inlet is communicated with the detection chamber, the rear air inlet is communicated with the condensation chamber, and a semiconductor chilling plate is installed on the side wall of the bottom of the condensation chamber. According to the novel efficient intelligent dehumidification device for the electrical cabinet, the detection chambers and the condensation chambers are arranged, when the detection chamber on one side carries out detection, the condensation chamber on the other side can carry out dehumidification work on airflow in the electrical cabinet, the temperature of the second cooling fins is controlled according to the current humidity, and therefore the efficient dehumidification effect is achieved; the effect of improving the dehumidification efficiency is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of dehumidification devices, and more specifically, to a new type of high-efficiency intelligent dehumidification device for electrical cabinets. Background Technique

[0002] In the power and communication industries, outdoor electrical cabinets play a crucial role. They carry out key functions such as power supply, circuit protection, and high-voltage components. However, under specific environmental conditions, such as during the rainy season or with significant day-night temperature differences, the interior of electrical cabinets is vulnerable to moisture intrusion, leading to a common physical phenomenon - condensation. Condensation refers to the process where when saturated moist air comes into contact with a surface that is colder than its dew point temperature, the moisture in the air condenses into liquid water droplets. This process is particularly dangerous inside electrical cabinets because metal surfaces and equipment usually reach relatively low temperatures due to nocturnal radiative cooling, becoming ideal locations for moisture condensation, which may trigger serious accidents such as electrical equipment short circuits and creepage, and also corrode the metal components in the equipment, seriously affecting the operation safety of the system and greatly reducing the service life of the equipment.

[0003] To solve the condensation problem of outdoor electrical cabinets, there are currently two main methods: One is to install a heating-type anti-condensation device inside the cabinet. When the system detects that the humidity is too high, the heater is activated to raise the temperature inside the cabinet to increase the relative humidity and prevent the occurrence of condensation. However, this method does not discharge the gaseous water in the air inside the cabinet to the outside of the cabinet. It only increases the relative humidity to prevent local condensation, and the overall effect is poor. At the same time, it also raises the temperature inside the electrical cabinet. The other is to install a condensation-type dehumidification device inside the cabinet. There are a fan and a refrigeration element in the dehumidification device. The fan draws the air inside the cabinet through the surface of the refrigeration element, and after condensation into water, it is discharged to the outside of the cabinet through a drain pipe. Although this method can reduce the absolute humidity of the electrical cabinet and discharge the humid air inside the cabinet after condensation to the outside of the cabinet, the efficiency is low, resulting in a large amount of power consumption. In addition, the surface of the refrigeration element is prone to icing in low-temperature weather, and effective dehumidification cannot be carried out. Generally, when the ambient temperature is below 10 degrees Celsius, it basically has no anti-condensation effect.

[0004] Therefore, it is very necessary to propose a new type of high-efficiency intelligent dehumidification device for electrical cabinets to solve the above problems. Content of the Utility Model

[0005] In view of the above problems, the utility model provides a new type of high-efficiency intelligent dehumidification device for electrical cabinets; it has the function of adjusting the temperature difference according to the humidity value, thereby improving the dehumidification efficiency, and at the same time can avoid icing in low-temperature situations, expanding the applicable range of dehumidification.

[0006] The utility model specifically adopts the following technical solutions to achieve the above purposes:

[0007] A new type of efficient intelligent dehumidification device for electrical cabinets, including a housing. A detection chamber and a condensation chamber are arranged inside the housing. A partition board is arranged between the detection chamber and the condensation chamber. An air inlet is opened at the top of the housing, including a front air inlet and a rear air inlet. The front air inlet is communicated with the detection chamber, and the rear air inlet is communicated with the condensation chamber. A semiconductor refrigeration sheet is installed on the bottom side wall of the condensation chamber;

[0008] The hot end of the semiconductor refrigeration sheet is connected with a first heat sink located in the detection chamber, and the cold end of the semiconductor refrigeration sheet is connected with a second heat sink located in the condensation chamber. A temperature sensor is connected to the top of the second heat sink, and a water collector is arranged at the bottom of the second heat sink. The bottom of the water collector is connected with an external drainage pipe. A flow guide plate is arranged at the bottom of the second heat sink, and the flow guide plate is arranged towards the water collector;

[0009] An air duct is opened at the bottom of the detection chamber and the condensation chamber and is communicated. A fan communicated with the outside is connected to the side wall of the detection chamber.

[0010] Preferably, an environment detector is connected to the top of the detection chamber. The environment detector includes a temperature sensor and a humidity sensor.

[0011] Preferably, a controller is arranged at the bottom of the environment detector, and a button extending out of the housing is arranged on the controller.

[0012] Preferably, a power supply and a relay are connected to the top of the condensation chamber. The power supply and the relay are installed on the side wall of the housing and are not on the same axis as the rear air inlet at the top.

[0013] Preferably, water guide grooves are opened on the heat dissipation fins of the second heat sink. The water guide grooves include a confluence part and a guiding part. One end of the guiding part is communicated with the confluence part, the other end of the guiding part extends to the edge of the heat dissipation fin, and the bottom of the confluence part extends to the bottom of the heat dissipation fin.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. The device is provided with a detection chamber and a condensation chamber inside the housing. When the detection chamber on one side conducts detection, the condensation chamber on the other side can dehumidify the air flow in the electrical cabinet and control the temperature of the second heat sink according to the current humidity, so as to achieve the effect of efficient dehumidification and improve the dehumidification efficiency.

[0016] 2. Through the intermittent operation of the thermoelectric cooler, this device solves the problem that the second heat sink may freeze due to too low temperature in a low-temperature environment. When the temperature is too low, the power supply to the thermoelectric cooler is cut off, causing the heat at the hot end to move to the other side, thereby warming the cold end, having the effect of continuously dehumidifying in a low-temperature environment and increasing the scope of use.

[0017] 3. By providing a water guide groove on the second heat sink, it can converge water droplets, accelerate the flow rate of water droplets on the second heat sink, thereby improving the condensation efficiency of the second heat sink for moisture in the air flow. At the same time, it can avoid the situation of chaotic water droplet flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the structure of the present utility model;

[0019] Figure 2 is a schematic diagram of the structure of the second heat sink and the thermoelectric cooler in the present utility model;

[0020] Figure 3 is a schematic diagram of the dehumidification capacity and temperature difference curve.

[0021] REFERENCE NUMERALS:

[0022] 1. Front air inlet; 2. Rear air inlet; 3. Power supply; 4. Relay; 5. Temperature sensor; 6. Second heat sink; 7. Thermoelectric cooler; 8. Deflector; 9. Water collector; 10. Outer shell; 11. Environment detector; 12. Controller; 13. Button; 14. First heat sink; 15. Fan; 16. Air duct; 17. Confluence part; 18. Guide part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1-3 , a new type of high-efficiency intelligent dehumidification device for electrical cabinets, including an outer shell 10 made of flame-retardant resin. A detection chamber and a condensation chamber are provided inside the outer shell 10, and a partition plate is provided between the detection chamber and the condensation chamber;

[0025] Specifically, air can flow inside both the detection chamber and the condensation chamber. The detection chamber can detect the air flow passing through it, and the detected data are the temperature and humidity inside the electrical cabinet at this time. By comparing with the temperature detected by the temperature sensor 5 on the second heat sink 6, the temperature difference is obtained, and then the rotation speed of the fan 15 is controlled to achieve the effect of efficient dehumidification. Refer to Figure 3 , the rotation speed of the fan 15 is adjusted according to the current humidity value RH, so as to maximize the dehumidification amount and achieve the effect of efficient dehumidification. The condensation chamber is used to condense the moisture in the air flow. The filtered air flow will be affected by the fan 15 through the air duct 16 and then discharged from the housing 10. An air inlet 1 and a rear air inlet 2 are provided at the top of the housing 10. The air inlet 1 is connected to the detection chamber, and the rear air inlet 2 is connected to the condensation chamber. A semiconductor refrigeration sheet 7 is installed on the bottom side wall of the condensation chamber;

[0026] Refer to Figure 1 , the hot end of the semiconductor refrigeration sheet 7 is connected to the first heat sink 14 located in the detection chamber, and the cold end of the semiconductor refrigeration sheet 7 is connected to the second heat sink 6 located in the condensation chamber. The semiconductor refrigeration sheet 7 is located on one side of the condensation chamber for refrigeration, which plays a role in condensing the moisture in the air flow. The heat is dissipated into the detection chamber through the first heat sink 14 and cooled with the flowing air flow. The first heat sink 14 is located at the bottom of the environmental detector 11, and the air flow flows from top to bottom, which will not affect the detection of the environmental detector 11. A temperature sensor 5 is connected to the top of the second heat sink 6, and a water collector 9 is provided at the bottom of the second heat sink 6. The cold end of the semiconductor refrigeration sheet 7 can reduce the temperature of the second heat sink 6. When the air flow in the condensation chamber comes into contact with the low-temperature second heat sink 6, moisture will condense on the second heat sink 6, and the water droplets will flow downward due to gravity and drip into the water collector 9. The bottom of the water collector 9 is connected to the external drainage pipe, and the condensed water collected by the water collector 9 is discharged from the electrical cabinet through the drainage pipe. A deflector 8 is provided at the bottom of the second heat sink 6, and the deflector 8 is arranged towards the water collector 9;

[0027] Refer to Figure 1 , a communicating air duct 16 is provided at the bottom of the detection chamber and the condensation chamber. The air duct 16 is used to connect the detection chamber and the condensation chamber, and a fan 15 communicating with the outside is connected to the side wall of the detection chamber.

[0028] Specifically, refer to Figure 1 , an environmental detector 11 is connected to the top of the detection chamber. The environmental detector 11 includes a temperature sensor 5 and a humidity sensor. The environmental detector 11 is used to detect the temperature and humidity inside the electrical cabinet, and the appropriate rotation speed of the fan 15 is selected by comparing with the temperature sensor 5 on the second heat sink 6.

[0029] Specifically, refer toFigure 1 At the bottom of the environmental detector 11, there is a controller 12, through which each internal component can be controlled. On the controller 12, there is a button 13 extending out of the housing 10.

[0030] Specifically, refer to Figure 1 , at the top of the condensation chamber, there are a power supply 3 and a relay 4 connected. The relay 4 controls the power supply state of the semiconductor refrigeration sheet 7. The power supply 3 and the relay 4 are installed on the side wall of the housing 10, not on the same axis as the rear air inlet 2 at the top, reducing the blockage of the air flow in the condensation chamber.

[0031] Specifically, refer to Figure 2 , on the heat dissipation fins of the second heat sink 6, there are water guide grooves opened. The water guide grooves are used to accelerate the convergence of water droplets, thereby improving the drainage efficiency of the condensed water. The water guide grooves include a confluence part 17 and a guiding part 18. One end of the guiding part 18 is communicated with the confluence part 17, and the other end of the guiding part 18 extends to the edge of the heat dissipation fin. One end of the guiding part 18 close to the confluence part 17 is set downward. When water droplets pass through the guiding part 18, they will be affected by the guiding part 18 and thus flow towards the lower-positioned confluence part 17. The bottom of the confluence part 17 extends to the bottom of the heat dissipation fin.

[0032] In this embodiment, the power supply 3 drives the temperature sensor 5, the semiconductor refrigeration sheet 7, the environmental detector 11, the controller 12, and the fan 15 to act. The fan 15 discharges the air flow in the detection chamber and the condensation chamber. At this time, the air flow in the electrical cabinet will enter the detection chamber and the condensation chamber through the front air inlet 1 and the rear air inlet 2 at the top of the housing 10. The air flow entering the detection chamber will be detected by the environmental detector 11, thereby obtaining the temperature and humidity in the electrical cabinet at this time. And the air flow entering the condensation chamber will come into contact with the low-temperature second heat sink 6, causing the second heat sink 6 to generate water droplets. During the process of the water droplets flowing downward, they will be guided by the guiding part 18 and thus flow along the confluence part 17 into the water collector 9 at the bottom;

[0033] When the surface temperature of the second heat sink 6 remains below zero degrees Celsius for a long time, the water droplets attached to the surface will condense into ice, which not only fails to play a dehumidifying role, but also causes water droplets to leak out as the ice thickness increases, affecting the safe operation of the equipment. Therefore, when the surface temperature of the second heat sink 6 detected by the temperature sensor 5 is lower than minus five degrees Celsius, the controller 12 cuts off the power supply of the semiconductor refrigeration sheet 7. Subsequently, the heat of the hot surface is transferred to the cold surface of the semiconductor refrigeration sheet 7 to achieve the effect of de-icing. When the surface temperature of the cold sheet is higher than two degrees Celsius, the power supply of the cold sheet is restored to continue refrigeration. During the power-off period of the semiconductor refrigeration sheet 7, the fan 15 continues to work, and the equipment can continue to dehumidify.

[0034] The above embodiments are only the preferred embodiments of the present utility model, and cannot be used to limit the scope of protection of the present utility model. Any non-substantial changes and substitutions made by those skilled in the art based on the present utility model fall within the scope of protection required by the present utility model.

Claims

1. A new type of efficient intelligent dehumidification device for electrical cabinets, characterized by: The invention comprises a housing (10), wherein a detection chamber and a condensation chamber are arranged inside the housing (10), a partition plate is arranged between the detection chamber and the condensation chamber, a front air inlet (1) and a rear air inlet (2) are arranged on the top of the housing (10), the front air inlet (1) is connected to the detection chamber, the rear air inlet (2) is connected to the condensation chamber, and a semiconductor cooling plate (7) is installed on the bottom side wall of the condensation chamber; The hot end of the semiconductor refrigeration sheet (7) is connected to a first heat sink (14) located in the detection chamber, the cold end of the semiconductor refrigeration sheet (7) is connected to a second heat sink (6) located in the condensation chamber, the top of the second heat sink (6) is connected to a temperature sensor (5), a water collector (9) is provided at the bottom of the second heat sink (6), the bottom of the water collector (9) is connected to an external drainage pipe, and a guide plate (8) is provided at the bottom of the second heat sink (6), and the guide plate (8) is arranged toward the water collector (9); A communicating air duct (16) is provided at the bottom of the detection chamber and the condensation chamber, and a fan (15) communicating with the outside is connected to the side wall of the detection chamber.

2. According to claim 1, a novel high-efficiency intelligent dehumidification device for an electrical cabinet is characterized in that: The top of the detection chamber is connected to an environment detector (11), and the environment detector (11) comprises a temperature sensor (5) and a humidity sensor.

3. A novel high-efficiency intelligent dehumidification device for electrical cabinets according to claim 2, characterized in that: A controller (12) is arranged at the bottom of the environment detector (11), and a button (13) extending out of the housing (10) is arranged on the controller (12).

4. According to claim 1, a novel high-efficiency intelligent dehumidification device for an electrical cabinet is characterized in that: The top of the condensation chamber is connected to a power source (3) and a relay (4), and the power source (3) and the relay (4) are installed on the side wall of the housing (10) and are not on the same axis as the rear air inlet (2) at the top.

5. According to claim 1, a novel high-efficiency intelligent dehumidification device for an electrical cabinet is characterized in that: The heat dissipation fins of the second heat sink (6) are provided with a water guide groove, the water guide groove comprising a confluence portion (17) and a guide portion (18), one end of the guide portion (18) is connected to the confluence portion (17), the other end of the guide portion (18) extends to the edge of the heat dissipation fin, and the bottom of the confluence portion (17) extends to the bottom of the heat dissipation fin.

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