Looped network switch box

Abstract

The utility model provides a ring network switch box. The ring network switch box is provided with a cooling difference mechanism, a semiconductor dehumidification mechanism and a drainage channel, the refrigeration end of the semiconductor dehumidification mechanism is installed in a switch box body, and the heat dissipation end of the semiconductor dehumidification mechanism is exposed out of the switch box body. The switch box is firstly switched into a cooling difference mode, and in the mode, the cooling difference mechanism reduces the temperature difference between the switch box body and the outside; and then the switch box is switched into a dehumidification mode, in the mode, the semiconductor dehumidification mechanism refrigerates and cools in the switch box body, so that water vapor in the switch box body is condensed into liquid, and the liquid is discharged out of the switch box body from the drainage channel. As the temperature of the switch box body is high, the semiconductor dehumidification mechanism is low in power consumption during dehumidification; as the temperature of the refrigeration end and the temperature of the heat dissipation end of the semiconductor dehumidification mechanism are close, the efficiency of absorbing heat from the refrigeration end by the heat dissipation end is high, the temperature of the refrigeration end drops fast, and the dehumidification effect is good.

Description

Technical Field

[0001] This utility model relates to the field of switch box technology, specifically to a ring network switch box. Background Technology

[0002] Ring mains switch boxes typically employ semiconductor dehumidification mechanisms for dehumidification. The cooling end of the semiconductor dehumidification mechanism is housed within the switch box body, while the heat dissipation end exposes to the outside. During operation, the heat dissipation end absorbs heat from the cooling end and dissipates it to the outside, thereby lowering the temperature of the cooling end. This causes moisture inside the switch box body to condense into liquid on the surface of the cooling end. A drain pipe inside the switch box body drains this liquid out, thus achieving dehumidification. The disadvantage of this dehumidification method is that when the switch box body temperature is lower than the ambient temperature, the power consumption of the semiconductor dehumidification mechanism increases significantly, and the dehumidification effect deteriorates. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a ring network switch box that uses a semiconductor dehumidification mechanism to dehumidify when the temperature of the switch box body is lower than that of the external environment, resulting in low power consumption and good dehumidification effect.

[0004] The inventors discovered that the power consumption of a semiconductor dehumidification mechanism varies under different temperature conditions. For example, reducing the cooling end temperature from 25 degrees Celsius to 15 degrees Celsius consumes relatively little power, while reducing it from 15 degrees Celsius to 5 degrees Celsius consumes significantly more. This means that when the switch box body temperature is low, the semiconductor dehumidification mechanism requires a larger power consumption to lower the cooling end temperature. When the switch box body temperature is lower than the ambient temperature, the cooling end temperature of the semiconductor dehumidification mechanism is lower than the heat dissipation end temperature. In this state, the heat dissipation end absorbs heat from the cooling end less efficiently, resulting in a slower temperature drop and poorer dehumidification. The inventors realized that when the switch box body temperature is lower than the ambient temperature, if the temperature difference between the switch box body and the ambient temperature can be reduced first, raising the switch box body temperature to near the ambient temperature, then: because the switch box body temperature is higher, the semiconductor dehumidification mechanism requires less power to lower the cooling end temperature; because the switch box body temperature is close to the ambient temperature, the cooling end and heat dissipation end temperatures of the semiconductor dehumidification mechanism are also closer, the heat dissipation end absorbs heat more efficiently from the cooling end, the cooling end temperature drops faster, and the dehumidification effect is better.

[0005] To solve the above-mentioned technical problems, the ring network switch box of this utility model is equipped with a temperature difference mechanism, a semiconductor dehumidification mechanism, and a drainage channel. The cooling end of the semiconductor dehumidification mechanism is installed inside the switch box body, while the heat dissipation end is exposed outside the switch box body. In the temperature difference mode, the semiconductor dehumidification mechanism does not work. The temperature difference mechanism draws outside air into the switch box body and discharges the air inside the switch box body to the outside, thereby reducing the temperature difference between the switch box body and the outside. In the dehumidification mode, the temperature difference mechanism does not work. The heat dissipation end of the semiconductor dehumidification mechanism absorbs the heat from the cooling end and discharges it to the outside, thereby cooling the cooling end and causing the water vapor inside the switch box body to condense into liquid. The drainage channel discharges the condensed liquid to the outside of the switch box body.

[0006] Furthermore, the switch box body has an air inlet and an air outlet, and the cooling differential mechanism includes an exhaust fan, which is installed at the air inlet to draw outside air into the switch box body so that the air inside the switch box body is discharged to the outside through the air outlet.

[0007] Furthermore, an air inlet baffle that can be movable to close the air inlet is provided at the air inlet; and / or an air outlet baffle that can be movable to close the air outlet is provided at the air outlet.

[0008] Furthermore, an internal circulation fan is provided to drive the air circulation inside the switch box body, and a semiconductor dehumidification mechanism is located in the air path of the internal circulation fan; in the cooling difference mode, the internal circulation fan does not work; in the dehumidification mode, the internal circulation fan draws air from inside the switch box body and drives the air circulation through the semiconductor dehumidification mechanism for dehumidification.

[0009] Furthermore, the switch box body is provided with a switch cabinet mounting position for installing a ring network switch cabinet, and a mounting cavity is left between the box wall and the switch cabinet mounting position. The cooling end of the semiconductor dehumidification mechanism is installed in the mounting cavity.

[0010] Furthermore, the switch box body includes a ring network switch cabinet, which is installed in the switch cabinet mounting position.

[0011] Furthermore, a humidity sensor is provided to detect the humidity of the switch box body, and / or a humidity sensor is provided to detect the humidity of the external environment.

[0012] Furthermore, the bottom of the switch box body is equipped with a cable trench, and a water pump is also provided to drain the liquid in the cable trench to the outside of the switch box body.

[0013] When the switch box body temperature is lower than the ambient temperature: First, switch the switch box to cooling difference mode. In this mode, the semiconductor dehumidification mechanism does not operate. The cooling difference mechanism introduces outside air into the switch box body and expels air from inside the switch box body to the outside, thereby reducing the temperature difference between the switch box body and the outside environment. This raises the switch box body temperature to near the ambient temperature. During this process, the cooling end of the semiconductor dehumidification mechanism rises to near the heat dissipation end. Then, switch the switch box to dehumidification mode. In this mode, the cooling difference mechanism does not operate. The heat dissipation end of the semiconductor dehumidification mechanism absorbs heat from the cooling end and discharges it to the outside environment, thus cooling the cooling end. Water vapor inside the switch box body condenses into liquid on the surface of the cooling end, and the drainage channel discharges the condensed liquid outside the switch box body. Because the switch box body temperature is relatively high, the semiconductor dehumidification mechanism requires only low power consumption to lower the cooling end temperature. Because the cooling end and heat dissipation end of the semiconductor dehumidification mechanism are relatively close in temperature, the heat dissipation end absorbs heat from the cooling end more efficiently, resulting in a faster cooling end temperature drop and better dehumidification effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a ring network switch box.

[0015] Figure 2 This is a cross-sectional view of the ring network switch box under the temperature difference mode.

[0016] Figure 3 This is a cross-sectional view of the ring network switch box in dehumidification mode. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to specific embodiments.

[0018] See ring network switch box Figure 1 and Figure 2The enclosure 5 has four switchgear mounting positions 50 arranged horizontally, each housing one of four ring network switchgear 6. A cable trench 55 is provided between the bottom wall 51 of the enclosure 5 and the switchgear mounting positions 50. The bottom wall 51 of the enclosure 5 has a bottom cable inlet 511, and the bottom wall 61 of the switchgear 6 also has a bottom cable inlet 611. External cables (not shown in the figure) extend from the bottom cable inlet 511 into the cable trench 55, and then from the bottom cable inlet 611 into the switchgear 6 to connect to the electrical components inside (not shown in the figure). The side wall 62 of the switchgear 6 has a cable connection port 621. Cables inside the switchgear 6 extend from the cable connection port 621 to the outside of the switchgear 6, and then extend from the cable connection port 621 of the adjacent switchgear 6 into that adjacent switchgear 6 to connect to the electrical components. The switch box is placed outdoors. During rain, rainwater may enter the cable trench 55 through the cable inlet 511 at the bottom of the box. Therefore, this switch box is equipped with a water level sensor 551 and a water pump 552 at the cable trench 55. The inlet pipe 553 of the water pump 552 extends into the bottom of the cable trench 55, and the outlet pipe 554 extends out of the box body 5. The switch box has a controller (not shown in the figure), which is connected to the water level sensor 551 and also controls the connected water pump 552. A water level warning value is manually set for the controller; in this embodiment, it is set to 5cm. When the water level in the cable trench 55 exceeds 5cm, the controller activates the water pump 552 to drain the water from the cable trench 55 to the outside of the box body 5.

[0019] See Figure 2 Because switch cabinet 6 is relatively enclosed, a temperature difference inevitably exists between its interior and the external environment. When the temperature difference between switch cabinet 6 and the external environment is large, moisture inside switch cabinet 6 easily condenses into liquid, which can affect the operation of electronic components inside the cabinet. To address this, this switch box is equipped with a temperature difference reduction mechanism 1 and corresponding air ducts. When the temperature difference between switch cabinet 6 and the external environment is large but the external humidity is not excessive, the switch box switches to a temperature difference reduction mode. The temperature difference reduction mechanism 1 draws outside air into switch cabinet 6 and exhausts the air inside switch cabinet 6 to the outside, thereby reducing the temperature difference between the inside of switch cabinet 6 and the outside environment. The specific process is detailed below:

[0020] See Figure 2An air inlet duct 56 is provided between the left wall 52 of the enclosure 5 and the switch cabinet mounting position 50, and an air outlet duct 57 is provided between the right wall 53 of the enclosure 5 and the switch cabinet mounting position 50. A top connecting duct 58 is provided between the top wall 54 of the enclosure 5 and the switch cabinet mounting position 50 to connect the air inlet duct 56 to the air outlet duct 57. The cable trench 55 at the bottom of the enclosure 5 serves as a bottom connecting duct 55 to connect the air inlet duct 56 to the air outlet duct 57. An air inlet 521 is opened on the left wall 52 of the enclosure 5, and an exhaust fan 522 is installed on the outside of the air inlet 521, with an air inlet baffle 523 hinged on the inside. An air outlet 531 is opened on the right wall 53 of the enclosure 5, and an air outlet baffle 532 is hinged on the outside of the air outlet 531. The bottom cable inlet 611 of the bottom wall 61 of the switch cabinet 6 connects to the bottom connecting air duct 55, and the cable connection port 621 of the side wall 62 of the switch cabinet 6 connects to the air inlet duct 56. The top wall 64 of the switch cabinet 6 has a ventilation opening 641 connecting to the top connecting air duct 58. The switch cabinet 6 is equipped with a switch cabinet temperature and humidity sensor 65 to detect the temperature and humidity inside the cabinet, and an ambient temperature and humidity sensor 59 is equipped outside the cabinet to detect the temperature and humidity of the external environment. The controller is connected to the switch cabinet temperature and humidity sensor 65 and the ambient temperature and humidity sensor 59, respectively obtaining the temperature and humidity information inside the cabinet and the external environment from these two sensors 65 and 59. The controller controls the connected exhaust fan 522. The switching conditions for the cooling difference mode are manually set for the controller: "The temperature difference between the inside of the switch cabinet 6 and the external environment exceeds 5 degrees Celsius and the external humidity is below 75%". When the above conditions are met, such as when the sun rises in the morning and the ambient temperature rises rapidly, while the load on switch cabinet 6 is low in the morning, the heat generated by its internal electronic components is small, the temperature inside the cabinet is low, the temperature difference between the inside of switch cabinet 6 and the outside environment exceeds 5 degrees Celsius and the humidity of the outside environment is below 75%, then the controller controls the switch box to switch to the temperature difference mode. In the temperature difference mode: the controller starts the exhaust fan 522, which acts as the temperature difference mechanism 1, drawing in outside air to generate an airflow from left to right. The airflow passes through the air inlet 521, blows open the air inlet baffle 523, and enters the air inlet duct 56 of the cabinet 5. The airflow in the air inlet duct 56 flows through two connecting ventilation ducts 55 and 58 to the air outlet duct 57. During this process, the airflow enters and exits the switch cabinet 6 through the bottom cable inlet 611, cable connection port 621, and ventilation port 641, thereby replacing the air inside the switch cabinet 6 and reducing the temperature difference between the cabinet and the outside environment. The airflow entering the air outlet duct 57 passes through the air outlet 531, blows open the air outlet baffle 532, and is then discharged into the outside environment.

[0021] See Figure 3The enclosure 5 and the switch cabinet 6 together form the switch box body 7. The air inlet duct 56 also serves as a mounting cavity. A semiconductor dehumidifier 2 is installed on the left wall 51 of the enclosure 5. The cooling end 21 of the semiconductor dehumidifier 2 is installed in the air inlet duct 56, while the heat dissipation end 22 protrudes outside the enclosure 5 and is equipped with a cooling fan 23. Internal circulation fans 4 are installed on both the air inlet duct 56 and the air outlet duct 57. The cooling end 21 of the semiconductor dehumidifier 2 is located in the airflow path of the internal circulation fan 4. A controller controls the connection between the semiconductor dehumidifier 2 and the internal circulation fan 4. A receiving plate 8 is located below the cooling end 21 of the semiconductor dehumidifier 2, and a drain pipe 81 is located at the bottom of the receiving plate 8. The drain pipe 81 serves as a drainage channel, extending outside the enclosure 5. In the temperature difference mode, the semiconductor dehumidifier 2 and the internal circulation fan 4 do not operate. This switch box has a dehumidification mode. The switcher can manually set the switching conditions for the dehumidification mode to the controller. In this embodiment, the condition is set to "the humidity inside switch cabinet 6 exceeds 80%". When this condition is met, for example, after the switch box has been running in the temperature difference mode for a period of time, the temperature of switch cabinet 6 rises to close to the ambient temperature, and the temperature of the cooling end 21 of the semiconductor dehumidification mechanism 2 rises to close to the heat dissipation end 22. However, the humidity inside switch cabinet 6 rises to more than 80% due to temperature changes, internal heat sources and other factors. In this case, the controller will switch the switch box to dehumidification mode. In dehumidification mode: the exhaust fan 522 does not work, the air inlet baffle 523 and the air outlet baffle 532 rotate naturally to hang down under the action of gravity, thereby sealing the air inlet 521 and the air outlet 531 respectively. The internal circulation fan 4 starts to draw air from the inside of the switch box body 7, driving the air circulation so that the air circulates through the cooling end 21 of the semiconductor dehumidification mechanism 2. The semiconductor dehumidification mechanism 2 starts, and its heat dissipation end 22 absorbs the heat of the cooling end 21 and discharges it to the outside, thereby cooling the cooling end 21. The cooling fan 23 dissipates heat from the heat dissipation end 22. When the air inside the switch box body 7 passes through the cooling end 21, the water vapor in the air condenses into liquid. The liquid drips down into the receiving tray 8 and then is discharged from the drain pipe 81 to the outside of the switch box body 7. Since the temperature of the switch box body 7 has risen to near ambient temperature, the semiconductor dehumidification mechanism 2 only requires low power consumption to lower the temperature of the cooling end 21. Because the temperatures of the cooling end 21 and the heat dissipation end 22 of the semiconductor dehumidification mechanism 2 are relatively close, the heat dissipation end 22 absorbs heat from the cooling end 21 more efficiently, resulting in a faster temperature drop at the cooling end 21 and better dehumidification. Since the cooling end 21 of the semiconductor cooling mechanism 2 is installed in the air inlet duct 56 rather than inside the switch cabinet 6, it is not necessary to put hands inside the switch cabinet 6 for maintenance, and the switch cabinet 6 does not need to be powered off.

[0022] This embodiment provides a control method for the aforementioned ring network switch box, as detailed below:

[0023] (1) When the temperature of the switch box body 7 is 5 degrees Celsius lower than the ambient temperature and the ambient humidity is lower than 75%, the controller switches the switch box to the temperature difference mode. In this mode, see Figure 2 The semiconductor dehumidification mechanism 2 and the internal circulation fan 4 are not working. The exhaust fan 522 draws outside air into the switch box body 7 and exhausts the air inside the switch box body 7 to the outside, thereby reducing the temperature difference between the switch box body 7 and the outside.

[0024] (2) After the switch box body 7 has been operating in the temperature difference mode for a period of time, if the humidity inside the switch cabinet 6 of the switch box body 7 rises to more than 80% due to factors such as temperature changes and internal heat sources, the controller will control the switch box to switch to dehumidification mode. In this mode, see Figure 3 When the exhaust fan 522 is not working, the internal circulation fan 4 drives the air inside the switch box body 7 to circulate through the semiconductor dehumidification mechanism 2. The semiconductor dehumidification mechanism 2 cools down the switch box body 7, causing the water vapor inside the switch box body 7 to condense into liquid. The liquid drips into the receiving tray 8 and is then discharged to the outside through the drain pipe 81.

[0025] The above description is merely an embodiment of the present invention and does not limit the scope of patent protection. Any non-substantial changes or substitutions made by those skilled in the art based on the present invention will still fall within the scope of patent protection.

Claims

1. A ring mains switch box, characterized in that: It is equipped with a temperature difference mechanism, a semiconductor dehumidification mechanism, and a drainage channel. The cooling end of the semiconductor dehumidification mechanism is installed inside the switch box body, while the heat dissipation end is exposed outside the switch box body. In the temperature difference mode, the semiconductor dehumidification mechanism does not work. The temperature difference mechanism draws outside air into the switch box body and exhausts the air inside the switch box body to the outside, thereby reducing the temperature difference between the switch box body and the outside. In the dehumidification mode, the temperature difference mechanism does not work. The heat dissipation end of the semiconductor dehumidification mechanism absorbs the heat from the cooling end and exhausts it to the outside, thereby cooling the cooling end and causing the water vapor inside the switch box body to condense into liquid. The drainage channel drains the condensed liquid out of the switch box body.

2. The ring network switch box according to claim 1, characterized in that: The switch box body has an air inlet and an air outlet. The cooling mechanism includes an exhaust fan, which is installed at the air inlet to draw outside air into the switch box body, thereby allowing the air inside the switch box body to be discharged to the outside through the air outlet.

3. The ring network switch box according to claim 2, characterized in that: An air inlet baffle that can be movable to close the air inlet is provided at the air inlet; and / or an air outlet baffle that can be movable to close the air outlet is provided at the air outlet.

4. The ring network switch box according to claim 1, characterized in that: An internal circulation fan is provided to drive the air circulation inside the switch box body. The semiconductor dehumidification mechanism is located in the air path of the internal circulation fan. In the cooling difference mode, the internal circulation fan does not work. In the dehumidification mode, the internal circulation fan draws air from inside the switch box body and drives the air to circulate through the semiconductor dehumidification mechanism for dehumidification.

5. The ring network switch box according to claim 1, characterized in that: The switch box body is provided with a switch cabinet mounting position for installing a ring network switch cabinet. There is a mounting cavity between the box wall and the switch cabinet mounting position, and the cooling end of the semiconductor dehumidification mechanism is installed in the mounting cavity.

6. The ring network switch box according to claim 5, characterized in that: The switch box body includes a ring network switch cabinet, which is installed in the switch cabinet mounting position.

7. The ring network switch box according to claim 1, characterized in that: A humidity sensor is provided to detect the humidity of the switch box body, and / or a humidity sensor is provided to detect the humidity of the external environment.

8. The ring network switch box according to claim 1, characterized in that: The bottom of the switch box body is equipped with a cable trench and a water pump to drain the liquid in the cable trench to the outside of the switch box body.

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