Automatic ventilating and cooling device for building electric well

Abstract

The utility model relates to an automatic ventilating and cooling device for an electric well of a building, which comprises an air outlet communicated with the inside and the outside of the electric well; the air inlet is formed in the wall of the electric well and communicates with the inside and outside of the electric well; the exhaust fan is connected to the exhaust outlet and used for exhausting air in the electric well through the exhaust outlet; the two temperature sensors are respectively arranged inside and outside the electric well; the controller is connected with the exhaust fan and the temperature sensor, and is suitable for controlling the exhaust fan to start according to the internal and external temperatures, detected by the temperature sensor, of the electric well when the internal temperature of the electric well is within a set range and is higher than the external temperature of the electric well; and the alarm device is arranged outside the electric well, is connected with the controller and is suitable for controlling the alarm device to give an alarm through the controller when the temperature detected by any temperature sensor exceeds a set value. When the temperature in the electric well is within the set range and is higher than the temperature outside the electric well, the low-temperature air outside the electric well is used for cooling the environment in the electric well, monitoring and automatic cooling of the temperature in the electric well can be achieved, and the equipment and maintenance cost is low.

Description

Technical Field

[0001] The utility model relates to the field of building ventilation technology, in particular to an automatic ventilation and cooling device for an electric well of a building. Background Art

[0002] In the design of construction projects, in order to maximize the usable area, the space of the equipment room is often compressed multiple times during the planning period. Therefore, the electrical well of the building is often made very small, just to meet the layout requirements of the equipment. Due to the small area and closed space of the electrical well, the strong and weak current equipment in the electrical well are arranged closely, which leads to the continuous accumulation of heat in the electrical well. In engineering applications, the temperature in the electrical well is often too high, causing intelligent system equipment failures, affecting the owner's later use experience and safety. Therefore, the heat dissipation problem of the electrical well of the building should be taken seriously.

[0003] In actual engineering, there are currently two commonly used solutions to solve the problem of overheating of building power wells affecting equipment operation. One solution is to install air conditioning for the power well, but since the power well is usually arranged in the center of the building, installing air conditioning in the power well is often difficult to implement due to the small space in the well and the inconvenience of discharging condensed water; the second solution is to install exhaust fans for the power well, but since the power well is equipped with fire doors and has good airtightness, the exhaust effect is not ideal. For large buildings, there are a large number of power wells, and it is not realistic to start and stop the fans manually at any time, and keeping the fans running all the time is not conducive to energy saving. Utility Model Content

[0004] Based on the above description, the utility model provides an automatic ventilation and cooling device for an electrical well in a building to solve the problem that in the current solution to overheating of electrical wells in buildings, the solution of installing air conditioners for the electrical wells is difficult to implement, and the solution of installing exhaust fans for the electrical wells has an unsatisfactory exhaust effect. Moreover, for large buildings, there are a large number of electrical wells, and it is not realistic to start and stop the fans manually at any time, while keeping the fans running all the time is not conducive to energy saving.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] The present application provides an automatic ventilation and cooling device for an electric well in a building, and the technical solution adopted is as follows:

[0007] An automatic ventilation and cooling device for an electrical well in a building, comprising:

[0008] An exhaust port is arranged on the wall of the electric well and connects the inside and outside of the electric well;

[0009] An air inlet, which is arranged on the wall of the electric well and connects the inside and outside of the electric well;

[0010] An exhaust fan connected to the exhaust port and used to exhaust the air in the electric well through the exhaust port;

[0011] Two temperature sensors, which are respectively arranged inside and outside the electrical well;

[0012] A controller connected to the exhaust fan and the temperature sensor, adapted to control the exhaust fan to start when the temperature inside the well is within a set range and higher than the temperature outside the well according to the temperature inside and outside the well detected by the temperature sensor;

[0013] An alarm device is arranged outside the electric well and connected to the controller, and is suitable for controlling the alarm device to alarm through the controller when the temperature detected by any of the temperature sensors exceeds a set value.

[0014] Preferably, a fire damper is provided in the exhaust port, which is suitable for fusing to close the exhaust port when the temperature at any position inside or outside the electric well exceeds a set value.

[0015] Preferably, a fire damper is provided in the air inlet, which is suitable for fusing to close the air inlet when the temperature at any position inside or outside the electric well exceeds a set value.

[0016] Preferably, the exhaust port is arranged on the side wall of the electric well and close to the top of the electric well.

[0017] Preferably, the air inlet is arranged on the side wall of the electric well and close to the bottom of the electric well.

[0018] Preferably, the exhaust fan is arranged in the electrical well and located at the top of the electrical well, the exhaust fan is connected to the exhaust port through an air duct, and the air inlet of the exhaust fan is arranged downward.

[0019] Preferably, grilles are provided in both the air outlet and the air inlet.

[0020] Preferably, the temperature sensor outside the electrical well is arranged close to the air inlet.

[0021] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0022] In the present application, the air in the well can be discharged through the exhaust port by the exhaust fan, and the air outside the well can enter the well through the air inlet. The temperature inside and outside the well is detected by the temperature sensor, and based on the temperature difference inside and outside the well and whether the temperature inside the well exceeds the set value, which can be a temperature value that affects the normal operation of the electrical equipment, the exhaust fan is controlled to start when the temperature inside the well is within the set range and higher than the temperature outside the well. That is, when the temperature inside the well exceeds the temperature value for normal operation of the equipment and the temperature outside the well is relatively low, the controller controls the exhaust fan to start and utilizes the low-temperature air outside the well to cool down the environment inside the well. By setting an alarm device, an audible and visual alarm is issued when the temperature inside the well exceeds the dangerous temperature, so as to remind personnel to take other cooling measures to ensure the safety of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the plan layout of the automatic ventilation and cooling device for the electric shaft of a building provided by an embodiment of the utility model;

[0024] Figure 2 A schematic elevational layout diagram of an automatic ventilation and cooling device for an electric shaft in a building provided by an embodiment of the utility model;

[0025] Figure 3 A schematic diagram of the structure of an automatic ventilation and cooling device for an electric well in a building provided by an embodiment of the utility model;

[0026] Figure 4 A control flow chart of an automatic ventilation and cooling device for an electric shaft in a building provided by an embodiment of the utility model, wherein Y represents yes and N represents no.

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0028] 1. Exhaust vent; 2. Air inlet; 3. Exhaust fan; 31. Air duct; 4. Temperature sensor; 5. Controller; 6. Alarm device; 7. Fire damper. DETAILED DESCRIPTION

[0029] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0031] It will be appreciated that spatial relationship terms such as "under," "beneath," "below," "under," "above," "above," etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be appreciated that, in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as being "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0032] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element, or connected to the other element through an intermediate element. The "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0033] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0034] Reference Figure 1-3 As shown, an embodiment of the present application provides an automatic ventilation and cooling device for an electrical shaft of a building, which includes an exhaust port 1, an air inlet 2, an exhaust fan 3, two temperature sensors 4, a controller 5 and an alarm device 6. The exhaust port 1 and the air inlet 2 are both arranged on the wall of the electrical shaft and are connected to the inside and outside of the electrical shaft. The exhaust fan 3 is connected to the exhaust port 1 and is used to discharge the air in the electrical shaft through the exhaust port 1. The two temperature sensors 4 are respectively arranged inside and outside the electrical shaft. The controller 5 is connected to the exhaust fan 3 and the temperature sensor 4, and is suitable for controlling the exhaust fan 3 to start according to the temperature inside and outside the electrical shaft detected by the temperature sensor 4 when the temperature inside the electrical shaft is within a set range and higher than the temperature outside the electrical shaft. The alarm device 6 is arranged outside the electrical shaft and connected to the controller 5, and is suitable for controlling the alarm device 6 to alarm through the controller 5 when the temperature detected by any temperature sensor 4 exceeds a set value.

[0035] Reference Figure 1-3As shown, specifically, the exhaust port 1 and the air inlet 2 are both arranged on the side wall of the electric well, and the exhaust port 1 is close to the top of the electric well, while the air inlet 2 is close to the bottom of the electric well, so that when the air circulates in the electric well, the low-temperature air can fully cool the environment in the electric well from bottom to top. Further, the exhaust fan 3 can be arranged in or outside the electric well, and the installation position is selected according to the size of the space in the electric well. In this embodiment, the exhaust fan 3 is arranged inside the electric well and connected to the exhaust port 1 through the air duct 31. In order to make the low-temperature air fully flow through the space in the electric well during air circulation, the exhaust fan 3 is arranged at the top of the electric well and its air inlet is arranged downward, so that the exhaust fan 3 is farther from the air inlet 2, and the low-temperature air flows through a longer path in the electric well, and the cooling effect is better.

[0036] Reference Figure 1-3 As shown, further, grilles are provided in both the exhaust port 1 and the air inlet 2. The grilles can be metal grilles or plastic grilles, which can be selected according to needs. While achieving the purpose of connecting the inside and outside of the electrical well, it prevents external foreign matter from entering the electrical well and affecting the normal operation of electrical equipment.

[0037] Reference Figure 1-3 As shown, further, when setting the temperature sensor 4 in the electric well, because the temperature distribution in the electric well is uneven, the cold air is at the bottom and the hot air is at the top, the temperature sensor 4 is too high or too low, and the measured temperature cannot accurately reflect the average temperature in the electric well. Therefore, setting the temperature sensor 4 in the electric well at a position slightly lower than the middle of the electric well can improve the accuracy of measuring the temperature in the electric well and avoid starting the exhaust fan 3 too early or too late to cool the environment in the electric well. In other embodiments, multiple temperature sensors 4 in the electric well can also be set and distributed at various positions in the electric well, and finally the temperature data of each temperature sensor 4 are combined to obtain the accurate value of the temperature in the electric well.

[0038] When the air outside the well is used to cool the environment inside the well, it is mainly the air near the air inlet 2 that enters the well. Therefore, when setting the temperature sensor 4 outside the well, it is set near the air inlet 2 to detect the air temperature outside the well near the air inlet 2 and compare it with the air temperature inside the well to ensure that the temperature of the air entering the well is lower than the air temperature inside the well to achieve the cooling purpose.

[0039] Reference Figure 1-3 As shown, further, the alarm device 6 has an audible and visual alarm function and a display function, which is arranged outside the electric well and fixed on the outer wall of the electric well, so that personnel can check the situation in the electric well and issue an alarm that the temperature in the electric well is too high. The controller 5 is arranged outside the electric well and is integrated with the alarm device 6. The controller 5 can realize automatic control, or the personnel can operate the controller 5 to turn on or off the exhaust fan 3.

[0040] Reference Figure 1-3As shown, further, a fire damper 7 is provided in both the exhaust port 1 and the air inlet 2, and the fire damper 7 is adapted to be melted when the temperature at any position inside or outside the electric shaft exceeds a set value to close the exhaust port 1 and the air inlet 2. Specifically, when the temperature inside and outside the electric shaft exceeds the set temperature at which the fire damper 7 melts, that is, a fire or other danger may occur inside or outside the electric shaft, at this time, the fire damper 7 is closed to isolate the inside and outside of the electric shaft to prevent the spread of the dangerous situation.

[0041] Specifically, referring to relevant national standards, when network equipment is installed in the intelligent weak current well, the ambient temperature in the well should not exceed 28°C; when the well is only used for wiring but no network equipment is installed, the ambient temperature in the well should not exceed 35°C. Each project can make adjustments based on this limited temperature according to the project situation and climatic conditions.

[0042] Taking the above temperature node as an example, refer to Figure 4 As shown, the control method of the building electric well automatic ventilation and cooling device of the present application is as follows:

[0043] 1. Initialization program.

[0044] 2. Determine whether the control system itself is faulty. If so, stop the fan, exit operation and sound an alarm; if normal, proceed to the next step.

[0045] 3. Determine whether the temperature at any point inside or outside the well exceeds 70°C. If so, stop the fan, exit operation and sound an alarm. At the same time, the 70°C fire damper 7 at the air inlet 2 and the air outlet 1 will melt automatically and close the air inlet 2 and the air outlet 1. If the temperature inside and outside the well does not exceed 70°C, proceed to the next step.

[0046] 4. Determine whether the temperature in the well exceeds 35°C. If not, proceed to the next step.

[0047] If yes, determine whether the temperature exceeds 35℃ for 30 minutes continuously. If yes, stop the fan, exit the operation and alarm; if no, proceed to the next step.

[0048] 5. Determine whether the temperature in the well exceeds 28°C. If not, determine whether the temperature in the well is not higher than 26°C. If the temperature in the well is not higher than 26°C, stop the fan, otherwise return to the beginning of the program.

[0049] If so, determine whether the temperature exceeds 28°C for 5 consecutive minutes. If the temperature inside the well exceeds 28°C for 5 consecutive minutes, further determine whether the temperature inside the well exceeds the temperature outside the well. If the temperature inside the well exceeds the temperature outside the well, turn on the fan. If the temperature inside the well is not higher than the temperature outside the well, stop the fan. If the temperature inside the well does not exceed 28°C for 5 consecutive minutes, further determine whether the temperature inside the well is not higher than 26°C. If the temperature inside the well is not higher than 26°C, stop the fan, otherwise return to the beginning of the program.

[0050] For example, at a certain moment in summer, the outdoor temperature of a building is 36°C, and the temperature of the indoor public area is 26°C due to the effect of air conditioning. There are switches and other equipment in the electrical shaft. As the switches work, the temperature in the shaft gradually rises to 30°C; when the controller 5 determines that the temperature in the shaft exceeds 28°C for 5 consecutive minutes, the exhaust fan 3 is started, and the outdoor cold air enters the shaft through the air inlet 2, and the hot air in the shaft is discharged out of the shaft through the exhaust port 1; when the temperature in the shaft drops to 26°C, the fan is stopped; when the temperature in the shaft exceeds 35°C for 30 consecutive minutes, the operation is directly stopped and an alarm is sounded; when the temperature in the shaft exceeds 70°C at any point inside or outside the shaft, the operation is directly stopped and an alarm is sounded, at which time the 70°C fire damper 7 of the air inlet 2 and the exhaust port 1 automatically melts and closes the air inlet 2 and the exhaust port 1.

[0051] The present application aims to adjust the temperature in the shaft to meet the requirements of the strong and weak current equipment in the shaft for the ambient working temperature. The start and stop of the exhaust fan 3 are determined by comparing the real-time temperature inside and outside the shaft of the building with the set temperature. When the indoor temperature abnormally exceeds the adjustment range of the fan, an audible and visual alarm will be issued. The application has the advantages of low cost, good energy-saving effect, simple assembly and small space occupation.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic ventilation and cooling device for an electrical well in a building, characterized in that: include: An exhaust port (1) is arranged on the wall of the power well and communicates with the inside and outside of the power well; An air inlet (2) is provided on the wall of the electric well and communicates with the inside and outside of the electric well; An exhaust fan (3), which is connected to the exhaust port (1) and is used to exhaust the air in the electric well through the exhaust port (1); Two temperature sensors (4), which are respectively arranged inside and outside the electrical well; a controller (5) connected to the exhaust fan (3) and the temperature sensor (4), adapted to control the exhaust fan (3) to start when the temperature inside the well is within a set range and higher than the temperature outside the well, based on the temperature inside and outside the well detected by the temperature sensor (4); An alarm device (6) is arranged outside the electric well and connected to the controller (5), and is suitable for controlling the alarm device (6) to sound an alarm through the controller (5) when the temperature detected by any of the temperature sensors (4) exceeds a set value.

2. The automatic ventilation and cooling device for electric shafts in buildings according to claim 1 is characterized in that: The exhaust port (1) is provided with a fire damper (7) which is adapted to fuse and close the exhaust port (1) when the temperature at any position inside or outside the electric well exceeds a set value.

3. The automatic ventilation and cooling device for electric shafts in buildings according to claim 2 is characterized in that: The air inlet (2) is provided with a fire damper (7), which is suitable for fusing to close the air inlet (2) when the temperature at any position inside or outside the electric well exceeds a set value.

4. The automatic ventilation and cooling device for electric shafts in buildings according to claim 1 is characterized in that: The air outlet (1) is arranged on the side wall of the electric well and close to the top of the electric well.

5. The automatic ventilation and cooling device for electric shafts in buildings according to claim 4 is characterized in that: The air inlet (2) is arranged on the side wall of the power well and close to the bottom of the power well.

6. The automatic ventilation and cooling device for electric shafts in buildings according to claim 4 is characterized in that: The exhaust fan (3) is arranged in the electrical well and located at the top of the electrical well. The exhaust fan (3) is connected to the exhaust port (1) via an air duct (31). The air inlet of the exhaust fan (3) is arranged downward.

7. The automatic ventilation and cooling device for electric shafts in buildings according to claim 1 is characterized in that: The air outlet (1) and the air inlet (2) are both provided with grilles.

8. The automatic ventilation and cooling device for electric shafts in buildings according to claim 1 is characterized in that: The temperature sensor (4) outside the electrical well is arranged close to the air inlet (2).

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