Looped network switch box and control method thereof

Abstract

The invention provides a looped network switch box and a control method of the looped 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 control method of the looped network switch box comprises the following steps which are executed in sequence: the switch box is 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; the switch box is switched into a dehumidification mode, in the mode, the semiconductor dehumidification mechanism conducts refrigeration and cooling in the switch box body so that water vapor in the switch box body can be 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] The invention relates to the technical field of switch boxes, and in particular to a ring network switch box and a control method for the ring network switch box. Background Art

[0002] Ring network switch boxes usually use semiconductor dehumidification mechanisms for dehumidification. The cooling end of the semiconductor dehumidification mechanism is installed in the switch box body, and the heat dissipation end is exposed outside the switch box body. When working, the heat dissipation end absorbs the heat of the cooling end and discharges it to the outside, thereby lowering the temperature of the cooling end so that the water vapor in the switch box body condenses into liquid on the surface of the cooling end. A drain pipe is provided in the switch box body to discharge these liquids to the outside of the switch box body, thereby achieving dehumidification. The disadvantage of this dehumidification method is that when the temperature of the switch box body is lower than the external environment, the power consumption of the semiconductor dehumidification mechanism will increase significantly and the dehumidification effect will also deteriorate. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a ring network switch box, when the temperature of the switch box body is lower than the external environment, a semiconductor dehumidification mechanism is used for dehumidification, the power consumption is low and the dehumidification effect is good. The present invention also provides a control method for the ring network switch box.

[0004] The inventors have found that the power consumption of semiconductor dehumidification mechanisms is different under different temperature conditions. For example, when the temperature of the cooling end is reduced from 25 degrees Celsius to 15 degrees Celsius, the power consumption is relatively small, and when the temperature of the cooling end is reduced from 15 degrees Celsius to 5 degrees Celsius, the power consumption is relatively large. In other words, when the temperature of the switch box body is low, the semiconductor dehumidification mechanism needs a large power consumption to reduce the temperature of the cooling end. When the temperature of the switch box body is lower than the external environment, the temperature of the cooling end of the semiconductor dehumidification mechanism is lower than the heat dissipation end. In this state, the efficiency of the heat dissipation end in absorbing heat from the cooling end is low, resulting in a slow drop in the temperature of the cooling end and a poor dehumidification effect. The inventors thought that when the temperature of the switch box body is lower than the external environment, if the temperature difference between the switch box body and the external environment can be reduced first, so that the temperature of the switch box body is close to the external environment temperature, then: since the temperature of the switch box body is high, the semiconductor dehumidification mechanism only needs a low power consumption to reduce the temperature of the cooling end; since the temperature of the switch box body is close to the external environment temperature, the temperature of the cooling end and the heat dissipation end of the semiconductor dehumidification mechanism are also close, the heat dissipation end absorbs heat from the cooling end with a high efficiency, the cooling end temperature drops quickly, and the dehumidification effect is good.

[0005] In order to solve the above technical problems, the ring network switch box of the present invention is provided with a temperature difference reduction mechanism, a semiconductor dehumidification mechanism and a drainage channel. The cooling end of the semiconductor dehumidification mechanism is installed in the switch box body, and the heat dissipation end is exposed outside the switch box body; in the temperature difference reduction mode, the semiconductor dehumidification mechanism does not work, the temperature difference reduction 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 reduction mechanism does not work, the heat dissipation end of the semiconductor dehumidification mechanism absorbs the heat of the cooling end and discharges it to the outside, thereby cooling the cooling end and causing the water vapor in the switch box body to condense into liquid, and the drainage channel discharges the condensed liquid to the outside of the switch box body.

[0006] Furthermore, the switch box body is provided with an air inlet and an air outlet, and the temperature difference reduction mechanism includes an exhaust fan installed at the air inlet to draw outside air into the switch box body so that the air in the switch box body is discharged to the outside through the air outlet.

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

[0008] Furthermore, an internal circulation fan is provided for driving the internal air circulation of the switch box body, and the semiconductor dehumidification mechanism is arranged on the wind path of the internal circulation fan; in the temperature difference mode, the internal circulation fan does not work; in the dehumidification mode, the internal circulation fan draws the air inside the switch box body to drive the air to circulate through the semiconductor dehumidification mechanism for dehumidification.

[0009] Furthermore, the switch box body is provided with a switch cabinet installation position for installing the ring network switch cabinet, an installation cavity is reserved between the box wall and the switch cabinet installation position, and the refrigeration end of the semiconductor dehumidification mechanism is installed in the installation cavity.

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

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

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

[0013] The control method of the ring network switch box of the present invention comprises the following steps performed in sequence:

[0014] Step A: Switch the switch box to the temperature difference reduction mode. In this mode, the semiconductor dehumidification mechanism does not work. The temperature difference reduction mechanism draws outside air into the switch box body and discharges the air in the switch box body to the outside, thereby reducing the temperature difference between the switch box body and the outside;

[0015] Step B: Switch the switch box to dehumidification mode. In this mode, the temperature difference mechanism does not work. The semiconductor dehumidification mechanism cools the switch box body to condense the water vapor in the switch box body into liquid, and the liquid is discharged from the drainage channel to the outside of the switch box body.

[0016] When the temperature of the switch box body is lower than the external environment: first switch the switch box to the temperature difference reduction mode. In the temperature difference reduction mode, the semiconductor dehumidification mechanism does not work. The temperature difference reduction mechanism introduces external air into the switch box body and discharges the air in the switch box body to the outside, thereby reducing the temperature difference between the switch box body and the outside, so that the temperature of the switch box body rises to close to the external environment temperature. In this process, the temperature of the cooling end of the semiconductor dehumidification mechanism rises to close to the heat dissipation end; then switch the switch box to the dehumidification mode. In the dehumidification mode, the temperature difference reduction mechanism does not work. The heat dissipation end of the semiconductor dehumidification mechanism absorbs the heat of the cooling end and discharges it to the outside to cool the cooling end. The water vapor in the switch box body condenses into liquid on the surface of the cooling end, and the drainage channel discharges the condensed liquid to the outside of the switch box body. Since the temperature of the switch box body is relatively high, the semiconductor dehumidification mechanism only needs a lower power consumption to reduce the temperature of the cooling end; since the temperature of the cooling end and the heat dissipation end of the semiconductor dehumidification mechanism are relatively close, the heat dissipation end has a higher efficiency in absorbing heat from the cooling end, the temperature of the cooling end drops faster, and the dehumidification effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the ring network switch box.

[0018] Figure 2 It is a cross-sectional view of the ring network switch box in the temperature drop mode.

[0019] Figure 3 It is a cross-sectional view of the ring main switch box in dehumidification mode. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with specific implementation methods.

[0021] Ring network switch box Figure 1 and Figure 2The box body 5 is provided with four switch cabinet installation positions 50 arranged on the left and right, and four ring network switch cabinets 6 are installed in the four switch cabinet installation positions 50 respectively. A cable trench 55 is left between the bottom wall 51 of the box body 5 and the switch cabinet installation position 50, and a box bottom cable access port 511 is opened on the bottom wall 51 of the box body 5, and a cabinet bottom cable access port 611 is opened on the bottom wall 61 of the switch cabinet 6. External cables (not shown in the figure) extend into the cable trench 55 from the box bottom cable access port 511, and then extend into the switch cabinet 6 from the cabinet bottom cable connection port 611 to connect with the electrical components in the cabinet (not shown in the figure). The side wall 62 of the switch cabinet 6 is provided with a cable connection port 621, and the cables in the switch cabinet 6 extend from the cable connection port 621 to the outside of the switch cabinet 6, and then extend into the adjacent switch cabinet 6 from the cable connection port 621 of the adjacent switch cabinet 6 to connect with the electrical components. The switch box is placed outdoors. When it rains, rainwater may enter the cable trench 55 from the cable access port 511 at the bottom of the box. For this reason, the switch box is equipped with a water level sensor 551 and a water pump 552 at the cable trench 55. The water inlet pipe 553 of the water pump 552 extends into the bottom of the cable trench 55, and the water outlet pipe 554 extends out of the box body 5. The switch box is provided with a controller (not shown in the figure). The controller is connected to the liquid level sensor 551 and also controls the connection of the water pump 552. The water level warning value is manually set for the controller. In this embodiment, it is set to 5 cm. When the water level in the cable trench 55 is higher than 5 cm, the controller controls the water pump 552 to start and discharge the water in the cable trench 55 to the outside of the box body 5.

[0022] See Figure 2 Since the switch cabinet 6 is relatively closed, there will inevitably be a temperature difference between its interior and the external environment. When the temperature difference between the switch cabinet 6 and the external environment is large, the water vapor inside the switch cabinet 6 is easy to condense into liquid, which is easy to affect the operation of the electronic components in the cabinet. In this regard, the switch box is provided with a temperature difference reduction mechanism 1 and a corresponding air duct is provided for the temperature difference reduction mechanism 1. When the temperature difference between the switch cabinet 6 and the external environment is large and the humidity of the external environment does not exceed the standard, the switch box switches to the temperature difference reduction mode, and the temperature difference reduction mechanism 1 draws the outside air into the switch cabinet 6 and discharges the air inside the switch cabinet 6 to the outside, thereby reducing the temperature difference between the inside and outside of the switch cabinet 6. The specific process is detailed as follows:

[0023] See Figure 2An air inlet duct 56 is provided between the left wall 52 of the box 5 and the switch cabinet installation position 50, and an air outlet duct 57 is provided between the right wall 53 of the box 5 and the switch cabinet installation position 50; a top connecting duct 58 is provided between the top wall 54 of the box 5 and the switch cabinet installation position 50 to connect the air inlet duct 56 to the air outlet duct 57, and a cable trench 55 at the bottom of the box 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 provided on the left wall 52 of the box 5, an exhaust fan 522 is installed outside the air inlet 521, and an air inlet baffle 523 is hinged inside; an air outlet 531 is provided on the right wall 53 of the box 5, and an air outlet baffle 532 is hinged outside the air outlet 531. The bottom cable access port 611 of the bottom wall 61 of the switch cabinet 6 is connected to the bottom connecting air duct 55, the cable connection port 621 of the side wall 62 of the switch cabinet 6 is connected to the air inlet duct 56, and the top wall 64 of the switch cabinet 6 is provided with a vent 641 connected to the top connecting air duct 58. The switch cabinet 6 is provided with a switch cabinet temperature and humidity sensor 65 for detecting the temperature and humidity inside the cabinet, and the box body 5 is provided with an environmental temperature and humidity sensor 59 for detecting the temperature and humidity of the external environment. The controller connects the switch cabinet temperature and humidity sensor 65 and the environmental temperature and humidity sensor 59, and obtains the temperature and humidity information inside the cabinet and the temperature and humidity information of the external environment from these two sensors 65 and 59 respectively. The controller controls the connection of the exhaust fan 522. The switching condition of the temperature difference reduction mode is 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 humidity of the external environment is less than 75%". When the above conditions are met, for example, when the sun just rises in the morning, the external ambient temperature rises rapidly, and the load of the 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 the switch cabinet 6 and the external environment exceeds 5 degrees Celsius and the humidity of the external environment is lower than 75%, then the controller controls the switch box to switch to the temperature difference reduction mode. In the temperature difference reduction mode: the controller starts the exhaust fan 522, and the exhaust fan 522 serves as the temperature difference reduction mechanism 1, extracting outside air to generate an airflow from left to right. The airflow passes through the air inlet 521 to blow open the air inlet baffle 523 and enter the air inlet duct 56 of the box body 5; the airflow entering the air inlet duct 56 flows through the two connecting ducts 55 and 58 to the air outlet duct 57. During this process, the airflow enters and exits the switch cabinet 6 through the cable access port 611, the cable connection port 621 and the ventilation port 641 at the bottom of the switch cabinet 6, thereby replacing the air in the switch cabinet 6 and reducing the temperature difference between the cabinet and the external environment; the airflow entering the air outlet duct 57 passes through the air outlet 531 to blow open the air outlet baffle 532 and then is discharged to the external environment.

[0024] See Figure 3, the box body 5 and the switch cabinet 6 form a switch box body 7. The air inlet channel 56 also serves as an installation cavity. A semiconductor dehumidification mechanism 2 is installed on the left wall 51 of the box body 5. The cooling end 21 of the semiconductor dehumidification mechanism 2 is installed in the air inlet channel 56. The heat dissipation end 22 is exposed to the outside of the box body 5 and is installed with a heat dissipation fan 23. An internal circulation fan 4 is installed on the air inlet channel 56 and the air outlet channel 57. The cooling end 21 of the semiconductor dehumidification mechanism 2 is located on the wind path of the internal circulation fan 4. The controller controls the connection between the semiconductor dehumidification mechanism 2 and the internal circulation fan 4. A receiving tray 8 is provided below the cooling end 21 of the semiconductor dehumidification mechanism 2. A drain pipe 81 is provided at the bottom of the receiving tray 8. The drain pipe 81 serves as a drainage channel and extends out of the box body 5. In the temperature difference reduction mode, the semiconductor dehumidification mechanism 2 and the internal circulation fan 4 do not work. The switch box has a dehumidification mode, and the switching condition of the dehumidification mode is manually set for the controller. In this embodiment, it is set as "the humidity inside the switch cabinet 6 exceeds 80%". Then when this condition is met, for example: after the switch box has been running in the temperature reduction mode for a period of time, the temperature of the switch cabinet 6 rises to close to the external environment temperature, and the temperature of the cooling end 21 of the semiconductor dehumidification mechanism 2 rises to close to the heat dissipation end 22, but the humidity inside the switch cabinet 6 rises to more than 80% due to factors such as temperature changes and internal heat sources, the controller controls the switch box to switch to the dehumidification mode. In dehumidification mode: the exhaust fan 522 does not work, the air inlet baffle 523 and the air outlet baffle 532 naturally rotate to droop under the action of gravity, thereby closing the air inlet 521 and the air outlet 531 respectively, and the internal circulation fan 4 starts to suck the air inside the switch box body 7 to drive the air circulation so that the air circulates through the cooling end 21 of the semiconductor dehumidification mechanism 2; the semiconductor dehumidification mechanism 2 is started, and its heat dissipation end 22 absorbs the heat of the cooling end 21 and discharges it to the outside to cool the cooling end 21, and the heat dissipation fan 23 dissipates the 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, and the liquid drips down into the receiving tray 8 and is then 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 a temperature close to the ambient temperature, the semiconductor dehumidification mechanism 2 only needs a relatively low power consumption to reduce the temperature of the cooling end 21; since the temperature of the cooling end 21 and the heat dissipation end 22 of the semiconductor dehumidification mechanism 2 is relatively close, the heat dissipation end 22 absorbs heat from the cooling end 21 with a high efficiency, the temperature of the cooling end 21 drops quickly, and the dehumidification effect is good. Since the cooling end 21 of the semiconductor refrigeration mechanism 2 is installed in the air inlet channel 56 instead of in the switch cabinet 6, when the semiconductor refrigeration mechanism 2 needs to be repaired, there is no need to reach into the switch cabinet 6, and the switch cabinet 6 does not need to be powered off.

[0025] This embodiment provides a control method for the above ring network switch box, which is specifically as follows:

[0026] (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 reduction mode. In this mode, Figure 2 , the semiconductor dehumidification mechanism 2 and the internal circulation fan 4 do not work, the exhaust fan 522 draws the outside air into the switch box body 7 and discharges the air in the switch box body 7 to the outside, thereby reducing the temperature difference between the switch box body 7 and the outside;

[0027] (2) After the switch box body 7 operates in the temperature reduction 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 controls the switch box to switch to the dehumidification mode. In this mode, Figure 3 The exhaust fan 522 does not work, and the internal circulation fan 4 drives the air in 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 to condense the water vapor in the switch box body 7 into liquid. The liquid drips into the receiving tray 8 and is then discharged to the outside through the drain pipe 81.

[0028] The above is only an implementation method of the invention, and does not limit the scope of patent protection. Those skilled in the art can make non-substantial changes or substitutions based on the invention, which still fall within the scope of patent protection.

Claims

1. Ring network switch box, characterized by: A temperature difference reduction mechanism, a semiconductor dehumidification mechanism and a drainage channel are provided. The cooling end of the semiconductor dehumidification mechanism is installed in the switch box body, and the heat dissipation end is exposed outside the switch box body. In the temperature difference reduction mode, the semiconductor dehumidification mechanism does not work, and the temperature difference reduction 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 reduction mechanism does not work, and the heat dissipation end of the semiconductor dehumidification mechanism absorbs the heat of the cooling end and discharges it to the outside, thereby cooling the cooling end and condensing the water vapor in the switch box body into liquid, and the drainage channel discharges the condensed liquid to the outside of the switch box body.

2. The ring network switch box according to claim 1, characterized in that: The switch box body is provided with an air inlet and an air outlet, and the temperature difference reduction mechanism includes an exhaust fan installed at the air inlet to draw outside air into the switch box body so that the air in the switch box body is 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 movably close the air inlet is provided at the air inlet; and / or an air outlet baffle that can movably 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 for driving the air circulation inside the switch box body, and the semiconductor dehumidification mechanism is arranged on the wind path of the internal circulation fan; in the temperature difference reduction mode, the internal circulation fan does not work; in the dehumidification mode, the internal circulation fan draws the air inside the switch box body to drive the air circulation to flow 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 installation position for installing the ring network switch cabinet, an installation cavity is reserved between the box wall and the switch cabinet installation position, and the refrigeration end of the semiconductor dehumidification mechanism is installed in the installation cavity.

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

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

8. The ring network switch box according to claim 1, characterized in that: A cable trench is provided at the bottom of the switch box body, and a water pump is also provided to discharge the liquid in the cable trench to the outside of the switch box body.

9. The control method of the ring network switch box according to any one of claims 1 to 8, characterized in that: The process includes the following steps, which are performed in sequence: Step A: Switch the switch box to the temperature difference reduction mode. In this mode, the semiconductor dehumidification mechanism does not work. The temperature difference reduction mechanism draws outside air into the switch box body and discharges the air in the switch box body to the outside, thereby reducing the temperature difference between the switch box body and the outside; Step B: Switch the switch box to dehumidification mode. In this mode, the temperature difference mechanism does not work. The semiconductor dehumidification mechanism cools the switch box body to condense the water vapor in the switch box body into liquid, and the liquid is discharged from the drainage channel to the outside of the switch box body.

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