Cooling and dustproof device for outdoor control cabinet

Abstract

The utility model provides a kind of cooling dustproof device for outdoor control cabinet, it is related to dustproof cooling technical field.The cooling dustproof device includes: air supply pipeline, return air duct, temperature sensor, electric regulating valve and controller.The one end of air supply pipeline is communicated with the air outlet end of air conditioning unit, and the other end of air supply pipeline is communicated with the bottom of control cabinet.The one end of return air duct is communicated with the inside of control cabinet from the top of control cabinet, and the other end of return air duct is communicated with the air mixing section of air conditioning unit.Temperature sensor is installed in control cabinet.Electric regulating valve is installed on return air duct.Controller is electrically connected with temperature sensor and electric regulating valve.The pipe diameter of air supply pipeline is greater than the pipe diameter of return air duct.The pipe diameter of the utility model's air supply pipeline is greater than the diameter of return air duct, so that control cabinet is always in positive pressure state, can effectively prevent dust from entering control cabinet, play the role of dust prevention.

Description

Technical Field

[0001] This utility model relates to the field of cooling and dust prevention technology, and in particular to a cooling and dust prevention device for outdoor control cabinets. Background Technology

[0002] In the polysilicon production process, the air conditioning units and control cabinets in the post-processing and reduction sections are installed outdoors. The control cabinets contain many electrical components and control systems, which generate heat during operation. The exposed control cabinets, exposed to direct sunlight, also generate significant amounts of heat. If this heat cannot be effectively dissipated, it can lead to overheating of the equipment, affecting the performance and reliability of electrical components, and even causing malfunctions. Therefore, cooling measures are crucial to maintaining a suitable temperature inside the control cabinet, thereby ensuring the safe and stable operation of the equipment.

[0003] Meanwhile, outdoor equipment is susceptible to environmental factors. Dust and foreign objects may enter the control cabinet, adhering to circuit boards and electrical components, causing short circuits, malfunctions, or even damage. This is especially true in the post-processing and reduction sections, which continuously generate dust such as silicon powder 24 hours a day. Therefore, dust prevention measures are crucial to effectively prevent dust ingress, protect internal components, and maintain normal equipment operation. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a cooling and dust prevention device for outdoor control cabinets. The diameter of the air supply duct is larger than the diameter of the return air duct, so that the control cabinet is always under positive pressure, which can effectively prevent dust from entering the control cabinet and play a dust prevention role.

[0005] The technical solution adopted in this utility model is:

[0006] A cooling and dust prevention device for an outdoor control cabinet includes:

[0007] The air supply duct is connected at one end to the air outlet of the air conditioning unit and at the other end to the bottom of the control cabinet.

[0008] The return air duct connects at one end to the top of the control cabinet and into the inside of the control cabinet, and at the other end to the mixing section of the air conditioning unit.

[0009] Temperature sensor, installed inside the control cabinet;

[0010] An electric regulating valve is installed on the return air duct;

[0011] The controller is electrically connected to the temperature sensor and the electric regulating valve;

[0012] The diameter of the air supply duct is larger than the diameter of the return air duct.

[0013] Optionally, a normally open first regulating valve is provided at the inlet of the air supply duct.

[0014] Optionally, a normally open second regulating valve is provided on the return air duct, the second regulating valve being located between the electric regulating valve and the mixing section of the air conditioning unit.

[0015] Optionally, the return air duct is equipped with a maintenance assembly for inspecting and repairing the electric regulating valve.

[0016] Optionally, the maintenance component includes:

[0017] The third regulating valve is installed on the return air duct and located between the electric regulating valve and the control cabinet. The third regulating valve is a normally open valve.

[0018] Optionally, the maintenance assembly further includes:

[0019] The ventilation duct is inspected, with one end connected to the return air duct and located between the third regulating valve and the control cabinet, and the other end located between the electric regulating valve and the second regulating valve;

[0020] The fourth regulating valve is installed on the maintenance ventilation pipe and is a normally closed valve.

[0021] The fifth regulating valve is installed on the return air duct and is located between the other end of the maintenance ventilation duct and the electric regulating valve. The fifth regulating valve is a normally open valve.

[0022] Optionally, the cooling and dust prevention device further includes:

[0023] A differential pressure sensor is installed inside the control cabinet and is electrically connected to the controller.

[0024] Optionally, the diameter of the air supply duct is 30mm-90mm larger than the diameter of the return air duct.

[0025] Compared with the prior art, the beneficial effects of this utility model are:

[0026] 1. The temperature sensor is set with an upper limit and a lower limit. The air supply duct delivers the cooled air, which has been cleaned by the air conditioning unit, into the control cabinet. The return air duct returns the heated air in the control cabinet to the mixing section of the air conditioning unit for further processing. This cycle is repeated to cool the control cabinet.

[0027] 2. The diameter of the air supply duct is larger than that of the return air duct, so that the control cabinet is always under positive pressure, which can effectively prevent dust from entering the control cabinet and play a dust prevention role. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A schematic diagram of the overall structure of a cooling and dust prevention device for an outdoor control cabinet.

[0030] Figure 2 A schematic diagram of the air handling structure for a cooling and dust prevention device used in an outdoor control cabinet.

[0031] illustrate: Figure 2 The serial numbers indicate the order in which the air conditioning unit processes the air.

[0032] Figure label:

[0033] 1. Air supply duct;

[0034] 2. Return air duct;

[0035] 3. Temperature sensor;

[0036] 4. Electric regulating valve;

[0037] 5. Controller;

[0038] 6. Air conditioning unit;

[0039] 7. Control cabinet;

[0040] 8. First regulating valve;

[0041] 9. Second regulating valve;

[0042] 10. Inspection component; 101. Third regulating valve; 102. Inspection ventilation duct; 103. Fourth regulating valve; 104. Fifth regulating valve;

[0043] 110. Differential pressure sensor. Detailed Implementation

[0044] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0046] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0047] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0048] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0049] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0050] like Figure 1 and Figure 2As shown, this utility model embodiment provides a cooling and dust prevention device for an outdoor control cabinet, including: an air supply duct 1, a return air duct 2, a temperature sensor 3, an electric regulating valve 4, and a controller 5. One end of the air supply duct 1 is connected to the air outlet of an air conditioning unit 6, and the other end of the air supply duct 1 is connected to the bottom of the control cabinet 7. One end of the return air duct 2 connects to the top of the control cabinet 7 and the interior of the control cabinet 7, and the other end of the return air duct 2 connects to the mixing section of the air conditioning unit 6. The temperature sensor 3 is installed inside the control cabinet 7. The electric regulating valve 4 is installed on the return air duct 2. The controller 5 is electrically connected to the temperature sensor 3 and the electric regulating valve 4. The diameter of the air supply duct 1 is larger than the diameter of the return air duct 2.

[0051] During use, the temperature sensor 3 is set with an upper limit and a lower limit. The supply air duct 1 delivers the cooled air, which has been cleaned by the air conditioning unit 6, into the control cabinet 7. The return air duct 2 returns the heated air in the control cabinet 7 to the mixing section of the air conditioning unit 6 for further processing. This cycle is repeated to cool the control cabinet 7.

[0052] The diameter of the air supply duct 1 is larger than that of the return air duct 2, so that the control cabinet 7 is always under positive pressure, which can effectively prevent dust from entering the control cabinet 7 and play a dustproof role.

[0053] During operation, temperature sensor 3 monitors the temperature inside control cabinet 7 in real time. When the temperature inside control cabinet 7 exceeds the set upper limit, temperature sensor 3 sends information back to controller 5. Controller 5 then controls electric regulating valve 4 to open, allowing air from control cabinet 7 to enter return air duct 2. Simultaneously, clean air from air conditioning unit 6 enters control cabinet 7 for cooling. When the temperature inside control cabinet 7 reaches the set lower limit, temperature sensor 3 sends information back to controller 5, which then controls electric regulating valve 4 to close. At this time, air conditioning unit 6 maintains air supply pressure, ensuring a positive pressure environment inside control cabinet 7 and preventing outdoor dust from entering and damaging the electrical equipment inside control cabinet 7.

[0054] In one embodiment, such as Figure 1 As shown, in order to facilitate the inspection and maintenance of the control cabinet 7 and the cooling and dust prevention device, a normally open first regulating valve 8 is installed at the inlet of the air supply duct 1. When inspecting the control cabinet 7 and the cooling and dust prevention device, the first regulating valve 8 can be in the closed state.

[0055] In one embodiment, in order to facilitate the inspection and maintenance of the control cabinet 7, a normally open second regulating valve 9 is provided on the return air duct 2. The second regulating valve 9 is located between the electric regulating valve 4 and the mixing section of the air conditioning unit 6.

[0056] When the cooling and dust prevention device is in normal use, the second regulating valve 9 is in the normally open state. When the control cabinet 7 needs to be inspected and maintained, the second regulating valve 9 and the first regulating valve 8 should be in the closed state.

[0057] In one embodiment, such as Figure 1 As shown, in order to facilitate the maintenance of the electric regulating valve 4, a maintenance assembly 10 for maintaining the electric regulating valve 4 is installed on the return air duct 2.

[0058] In one embodiment, such as Figure 1 As shown, the maintenance assembly 10 includes a third regulating valve 101. The third regulating valve 101 is installed on the return air duct 2 and is located between the electric regulating valve 4 and the control cabinet 7. The third regulating valve 101 is a normally open valve.

[0059] To facilitate the smooth entry of used air into the mixing section of air conditioning unit 6, the second regulating valve 9 and the third regulating valve 101 are normally open during use. When maintenance of the electric regulating valve 4 is required, both the second regulating valve 9 and the third regulating valve 101 are closed. Once the second regulating valve 9 and the third regulating valve 101 are closed, maintenance personnel can then perform maintenance and repairs on the electric regulating valve 4.

[0060] In one embodiment, such as Figure 1 As shown, the maintenance assembly 10 further includes: a maintenance ventilation duct 102, a fourth regulating valve 103, and a fifth regulating valve 104. One end of the maintenance ventilation duct 102 is connected to the return air duct 2 and is located between the third regulating valve 101 and the control cabinet 7, while the other end is located between the electric regulating valve 4 and the second regulating valve 9. The fourth regulating valve 103 is installed on the maintenance ventilation duct 102 and is a normally closed valve. The fifth regulating valve 104 is installed on the return air duct 2, located between the other end of the maintenance ventilation duct 102 and the electric regulating valve 4, and is a normally open valve.

[0061] To avoid downtime affecting the use of control cabinet 7 when the electric regulating valve 4 needs to be inspected and maintained, a maintenance ventilation duct 102 is provided, and a fourth regulating valve 103 is installed on the maintenance ventilation duct 102. A fifth regulating valve 104 is installed on the return air duct 2, and the fifth regulating valve 104 is in the normally open state.

[0062] During the inspection and maintenance of the electric regulating valve 4, the fourth regulating valve 103 is opened, while the third regulating valve 101 and the fifth regulating valve 104 are closed. At this time, the air in the control cabinet 7 is introduced into the second half of the return air duct 2 through the maintenance ventilation pipe 102, and then sent into the mixing section of the air conditioning unit 6 through the return air duct 2.

[0063] In one embodiment, such as Figure 1As shown, the cooling and dust prevention device further includes a differential pressure sensor 110. The differential pressure sensor 110 is installed inside the control cabinet 7 and is electrically connected to the controller 5.

[0064] During use, the differential pressure sensor 110 monitors the pressure inside the control cabinet 7 in real time. If the pressure detected by the differential pressure sensor 110 is lower than the preset minimum value, the information is fed back to the controller 5. The controller 5 then informs the user that the sealing strip of the control cabinet 7 needs to be repaired or replaced, which can effectively prevent dust from entering the control cabinet 7.

[0065] In one embodiment, to facilitate maintaining positive pressure within the control cabinet 7, the diameter of the supply air duct 1 is 30mm-90mm larger than the diameter of the return air duct 2. Preferably, the diameters are 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, and 90mm. The optimal diameter is 60mm.

[0066] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A cooling and dust prevention device for an outdoor control cabinet, characterized in that, include: The air supply duct is connected at one end to the air outlet of the air conditioning unit and at the other end to the bottom of the control cabinet. The return air duct connects at one end to the top of the control cabinet and into the inside of the control cabinet, and at the other end to the mixing section of the air conditioning unit. Temperature sensor, installed inside the control cabinet; An electric regulating valve is installed on the return air duct; The controller is electrically connected to the temperature sensor and the electric regulating valve; The diameter of the air supply duct is larger than the diameter of the return air duct.

2. The cooling and dustproof device for outdoor control cabinets according to claim 1, characterized in that, A normally open first regulating valve is installed at the inlet of the air supply duct.

3. The cooling and dustproof device for outdoor control cabinets according to claim 1 or 2, characterized in that, The return air duct is equipped with a normally open second regulating valve, which is located between the electric regulating valve and the mixing section of the air conditioning unit.

4. The cooling and dustproof device for outdoor control cabinets according to claim 3, characterized in that, The return air duct is equipped with a maintenance assembly for inspecting and repairing the electric regulating valve.

5. The cooling and dustproof device for outdoor control cabinets according to claim 4, characterized in that, The maintenance components include: The third regulating valve is installed on the return air duct and located between the electric regulating valve and the control cabinet. The third regulating valve is a normally open valve.

6. The cooling and dustproof device for outdoor control cabinets according to claim 5, characterized in that, The maintenance components further include: The ventilation duct is inspected, with one end connected to the return air duct and located between the third regulating valve and the control cabinet, and the other end located between the electric regulating valve and the second regulating valve; The fourth regulating valve is installed on the maintenance ventilation pipe and is a normally closed valve. The fifth regulating valve is installed on the return air duct and is located between the other end of the maintenance ventilation duct and the electric regulating valve. The fifth regulating valve is a normally open valve.

7. The cooling and dustproof device for outdoor control cabinets according to claim 1, characterized in that, The cooling and dust prevention device further includes: A differential pressure sensor is installed inside the control cabinet and is electrically connected to the controller.

8. The cooling and dustproof device for outdoor control cabinets according to claim 1, characterized in that, The diameter of the air supply duct is 30mm-90mm larger than the diameter of the return air duct.

Images