Moisture-proof and dust-proof equipment
By installing dustproof components and heating modules at the ventilation windows of the SVG equipment, the problem of dust and humid gas entering the SVG equipment during heat dissipation is solved, achieving effective dust prevention and dehumidification, and protecting the components inside the equipment.
Patent Information
- Application Number
- CN202422666580.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-01
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-11-01
AI Technical Summary
During the heat dissipation process of existing SVG equipment, external humid gases and dust can easily enter, leading to corrosion of components. The existing dehumidification and dust removal effects are poor.
It adopts a combination of dustproof components and heating modules. The dustproof components filter dust, and the heating module heats and dehumidifies the gas to prevent dust from getting damp and to improve the moisture and dustproof effect.
It effectively prevents dust from entering and removes humid gases, protecting the internal components of SVG equipment and improving equipment safety and stability.
Smart Images
Figure CN223651813U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of electrical engineering technology, and in particular to a moisture-proof and dust-proof device. Background Technology
[0002] A static var generator (SVG) is a power electronic device used in power systems to achieve dynamic reactive power compensation. SVG devices can solve the problem of reactive power instability caused by load changes, voltage fluctuations, and other factors in power systems.
[0003] In existing technologies, high-power cooling fans are used to accelerate airflow within the SVG device to prevent it from overheating during operation. However, this accelerated airflow causes air to circulate within the SVG device, leading to the entry of large amounts of humid air and dust into the device. This can corrode internal components, impacting production and equipment safety.
[0004] However, existing technologies that use desiccants and activated carbon to dehumidify and remove dust from humid air have poor dehumidification and dust removal effects. Utility Model Content
[0005] This application provides a moisture-proof and dust-proof device to solve the technical problem.
[0006] The embodiments of this application provide the following technical solutions to solve the above-mentioned technical problems:
[0007] This application provides a moisture-proof and dust-proof device, including:
[0008] A moisture-proof and dust-proof device and a dehumidification circuit are provided. The moisture-proof and dust-proof device includes a ventilation window, which is a box-like structure. One side of the ventilation window is an exhaust port, and the other side is an air inlet. The air inlet is equipped with a dustproof component. The dehumidification circuit is located inside the ventilation window and includes a heating module, a control module, an indicator module, and a conversion module. The heating module is located between the exhaust port and the air inlet, and is positioned close to the exhaust port. The heating module is connected to both the control module and the indicator module. The control module and the indicator module are positioned close to the exhaust port. The control module controls the heating module to turn on or off, and the indicator module indicates the operating status of the heating module.
[0009] The beneficial effects of this application's embodiments: The moisture-proof and dust-proof equipment provided in this application includes a ventilation window. The ventilation window, through a dust-proof component at the air inlet, can filter the air entering the SVG chamber, preventing dust from being carried into the SVG chamber and avoiding corrosion of the electrical components inside the SVG chamber by the dust becoming damp. Simultaneously, the moisture-proof and dust-proof equipment provided in this application also includes a dehumidification circuit. The dehumidification circuit heats the air entering the SVG chamber through a heating module, thereby achieving a dehumidification effect. Furthermore, the heating module is located between the exhaust port and the air inlet, closer to the exhaust port, allowing the heating module to fully heat the air inside the ventilation window, thus improving the dehumidification effect. Through the combined action of the dust-proof component and the heating module, dust and moisture can be removed from the air about to enter the SVG chamber, thereby achieving the effect of moisture-proof and dust-proof.
[0010] In one possible implementation, the control module includes an automatic control circuit and a manual control circuit, and the conversion module includes a selector switch;
[0011] The automatic control circuit and the manual control circuit are respectively connected to the heating circuit of the heating module and the changeover switch;
[0012] The selector switch is used to switch the conduction of the automatic control circuit or manual control circuit with the heating circuit;
[0013] The automatic control circuit includes a temperature sensor, a humidity sensor, and a temperature and humidity controller. The temperature and humidity controller is connected to the temperature sensor and the humidity sensor respectively, and is used to control the heating circuit to turn on or off according to the temperature or humidity.
[0014] The manual control circuit is used by the user to control the heating circuit to turn on or off.
[0015] In one possible implementation, the automatic control circuit and the manual control circuit are respectively connected to the heating circuit via contactors.
[0016] In one possible implementation, the manual control circuit includes a stop button and a start button, wherein the stop button is a normally closed button and the start button is a normally open button;
[0017] The stop button and the start button are connected in series, and one normally open contact of the contactor is connected in parallel with the start button.
[0018] In one possible implementation, the automatic control circuit and the manual control circuit are encapsulated within a circuit housing, while the operable parts of the selector switch, the stop button, and the start button are exposed outside the circuit housing.
[0019] In one possible implementation, the indicating module includes a first indicating circuit and a second indicating circuit respectively connected to the heating module;
[0020] The first indicating circuit includes a stop indicator light, which is connected in series with a normally closed contact of the contactor. The second indicating circuit includes a run indicator light, which is connected in series with another normally open contact of the contactor.
[0021] In one possible implementation, the heating circuit includes an overload protector and a heater;
[0022] The heater is connected to the overload protection circuit, the control module, and the indicator module, respectively.
[0023] In one possible implementation, the dehumidification circuit further includes a protection circuit, which is connected to the heating module and the control module respectively.
[0024] The protection circuit includes a short-circuit fuse and an overload protector.
[0025] In one possible implementation, the dustproof component includes a dustproof net and a dustproof cotton, with the dustproof cotton hung on the dustproof net.
[0026] In one possible implementation, the ventilation window is provided with multiple grilles, and there are multiple dustproof components, with each dustproof component corresponding to each grille.
[0027] In addition to the technical problems solved by this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions as described above, other technical problems that can be solved by the moisture-proof and dust-proof equipment provided by this application, other technical features contained in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific embodiments. Attached Figure Description
[0028] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.
[0029] Figure 1 A schematic diagram of the dehumidification circuit of the moisture-proof and dust-proof device provided in the embodiments of this application. Figure 1 ;
[0030] Figure 2 A schematic diagram of the dehumidification circuit of the moisture-proof and dust-proof device provided in the embodiments of this application. Figure 2 ;
[0031] Figure 3This is a schematic diagram of the structure of the moisture-proof and dust-proof equipment provided in the embodiments of this application.
[0032] Explanation of reference numerals in the attached figures:
[0033] 100. Heating circuit; 200. Automatic control circuit; 300. Manual control circuit; 400. First indicator circuit; 500. Second indicator circuit; 600. Protection circuit;
[0034] 700. Ventilation window; 701. Air inlet; 702. Exhaust outlet; 703. Dustproof net; 704. Dustproof cotton.
[0035] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation
[0036] In related technologies, desiccants and activated carbon are installed at the air inlet to remove dust and moisture from the gas entering the SVG chamber. However, desiccants and activated carbon degrade quickly, resulting in poor dehumidification and dust removal effects.
[0037] In view of this, the embodiments of this application, by installing a dustproof component at the air inlet of the ventilation window, can filter the air entering the SVG chamber, preventing dust from being carried into the SVG chamber and avoiding corrosion of the electrical components inside the SVG chamber by the dust becoming damp. The heating module of the dehumidification circuit can heat the air entering the SVG chamber, thereby achieving a dehumidification effect. Through the combined action of the dustproof component and the heating module, the air about to enter the SVG chamber can be dust-proofed and dehumidified, thus improving the moisture-proof and dust-proof effect.
[0038] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0039] Figure 1 A schematic diagram of the dehumidification circuit of the moisture-proof and dust-proof device provided in the embodiments of this application. Figure 1 , Figure 3 This is a schematic diagram of the structure of the moisture-proof and dust-proof device provided in an embodiment of this application. Figure 1 and 3As shown, the moisture-proof and dust-proof equipment includes a moisture-proof and dust-proof device and a dehumidification circuit. The moisture-proof and dust-proof device includes a ventilation window 700, which is a box-like structure. One side of the ventilation window 700 is an exhaust port 702, and the other side is an air inlet 701. The air inlet 701 is equipped with a dustproof component. The dehumidification circuit is located inside the ventilation window 700 and includes a heating module, a control module, an indicator module, and a conversion module. The heating module is located between the exhaust port 702 and the air inlet 701, and is positioned close to the exhaust port 702. The heating module is connected to both the control module and the indicator module. The control module and the indicator module are positioned close to the exhaust port 702. The control module controls the heating module to turn on or off, and the indicator module indicates the operating status of the heating module. In other words, gas enters the ventilation window 700 through the air inlet 701 and enters the SVG chamber through the exhaust port 702. During the process of gas entering the SVG chamber through the ventilation window 700, it first passes through the dustproof component at the air inlet 701, which filters dust present in the gas. Then, as the gas flows from the inlet 701 to the outlet 702, the heating module located between the outlet 702 and the inlet 701 heats and dehumidifies the gas, thus keeping the gas entering the SVG chamber through the outlet 702 dry. By positioning the heating module close to the outlet 702, it can fully heat the gas inside the ventilation window 700, improving the dehumidification effect. Furthermore, by positioning the control module and indicator module close to the outlet 702, operators can readily monitor the heating module's operating status and easily adjust it via the control module.
[0040] In some embodiments of this application, the dustproof component includes a dustproof net 703 and a dustproof cotton 704, with the dustproof cotton 704 hanging on the dustproof net 703.
[0041] Optionally, the dustproof mesh 703 is made of polyester fiber. The dustproof cotton 704 uses high-efficiency dustproof filter media, made of fiber cotton. These features ensure that each dustproof component has good air permeability and dust adsorption capacity.
[0042] In some embodiments of this application, the ventilation window 700 is provided with multiple grilles and multiple dustproof components, with each dustproof component corresponding to a grille.
[0043] Optionally, the ventilation window 700 can be 1000*1200*300mm in size, and the air inlet 701 can be 1000*1200mm in size. There are four dustproof components, each measuring 400*500mm. The dimensions of the dustproof components correspond to the dimensions of the grilles, allowing the dustproof components to be installed in each grille accordingly.
[0044] In some embodiments of this application, such as Figure 1As shown, the control module includes an automatic control circuit 200 and a manual control circuit 300, and the conversion module includes a selector switch. Both the automatic control circuit 200 and the manual control circuit 300 are connected to the heating circuit 100 of the heating module and the selector switch, respectively. The selector switch is used to switch the conduction of the automatic control circuit 200 or the manual control circuit 300 with the heating circuit 100. That is, when the selector switch is connected to the automatic control circuit 200, the manual control circuit 300 is in the off state. The automatic control circuit 200 is connected to the heating circuit 100 through the selector switch, and can automatically control the heating circuit 100 to heat it when the preset temperature or humidity is met. When the selector switch is connected to the manual control circuit 300, the automatic control circuit 200 is in the off state. The manual control circuit 300 is connected to the heating circuit 100 through the selector switch, allowing the user to manually control the heating circuit 100 to turn on or off.
[0045] A contactor is a widely used switching electrical appliance that utilizes electromagnetic, pneumatic, or hydraulic principles to control the switching of the main circuit. The working principle of a contactor is as follows: When the contactor coil is energized, the coil current generates a magnetic field. This magnetic field causes the stationary iron core to generate an electromagnetic attraction, drawing in the moving iron core and actuating the AC contactor. The normally closed contact opens, and the normally open contact closes; these actions are linked. When the coil is de-energized, the electromagnetic attraction disappears, and the armature is released by the release spring, causing the contacts to return to their original position. The normally open contact opens, and the normally closed contact closes. Optionally, the contactor used in this embodiment includes two normally open contacts and two normally closed contacts.
[0046] The following is combined Figure 2 The composition of the dehumidification circuit is explained in detail. Figure 2 A schematic diagram of the dehumidification circuit of the moisture-proof and dust-proof device provided in the embodiments of this application. Figure 2 .like Figure 2As shown, the automatic control circuit 200 includes a temperature sensor WD, a humidity sensor SD, and a temperature and humidity controller KZ. The temperature and humidity controller KZ is connected to both the temperature sensor WD and the humidity sensor SD, and is used to control the heating circuit 100 to turn on or off based on temperature or humidity. The manual control circuit 300 is used by the user to control the heating circuit 100 to turn on or off. One end of the temperature and humidity controller KZ is connected to the temperature sensor WD, and the other end is connected to the humidity sensor SD. The temperature and humidity controller KZ is also connected to the heating circuit 100 via a contactor KM. When the changeover switch SA1 is connected to the automatic control circuit 200, the temperature and humidity controller KZ will conduct when either the temperature sensor WD or the humidity sensor SD reaches a preset threshold. At this time, the coil in the contactor KM connected to the temperature and humidity controller KZ is energized, generating a magnetic field. This magnetic field attracts the contactor KM to close, thus turning it on. At this time, the automatic control circuit 200 is connected to the heating circuit 100, and the heater R operates.
[0047] In some embodiments of this application, the manual control circuit 300 includes a stop button SB1 and a start button SB2. The stop button SB1 is a normally closed button, and the start button SB2 is a normally open button. The stop button SB1 and start button SB2 are connected in series, and a normally open contact KM1 of the contactor KM is connected in parallel with the start button SB2. One end of the stop button SB1 can be connected to the heating circuit 100 via a changeover switch SA1, and the other end can be connected to the heating circuit 100 via the contactor KM. The normally open contact of the contactor KM connected in parallel with the start button SB2 can be designated as the first normally open contact KM1. That is, the stop button SB1 is conductive when not pressed and disconnected when pressed by the operator. Conversely, the start button SB2 is disconnected when not pressed and conductive when pressed by the operator.
[0048] When the changeover switch SA1 is connected to the manual control circuit 300, the operator can manually control the heating circuit 100 to turn on or off. When the heating circuit 100 needs to be turned on, the operator presses the start button SB2. At this time, the start button SB2 is turned on, and current flows through the changeover switch SA1, stop button SB1, and start button SB2 to the contactor KM, thus turning on the contactor KM. With the contactor KM on, the first normally open contact KM1 is closed. Then, the operator releases the button, and the start button SB2 is turned off. Because the first normally open contact KM1 is turned on at this time, and the first normally open contact KM1 is connected in parallel with the start button SB2, even when the start button SB2 is off, current can still flow through the changeover switch SA1, stop button SB1, and the first normally open contact KM to the contactor KM, thus allowing the heater R to continue operating when the operator releases the start button SB2. When it is necessary to disconnect the heating circuit 100, the operator presses the stop button SB1. At this time, the normally closed stop button SB1 opens, the contactor KM opens, and thus the heating circuit 100 is disconnected.
[0049] In some embodiments of this application, the automatic control circuit 200 and the manual control circuit 300 are respectively connected to the heating circuit 100 via contactors KM. One end of the automatic control circuit 200 and the manual control circuit 300 can be connected to the live wire L and the neutral wire N, and the other end is connected to the heating circuit 100 via contactors KM. That is, both the automatic control circuit 200 and the manual control circuit 300 can control the heating circuit 100 by controlling the opening and closing state of the contactor KM. Furthermore, the heating module is connected to both the control module and the indicator module, with the indicator module used to indicate the operating status of the heating module.
[0050] In some embodiments of this application, the indicating module includes a first indicating circuit 400 and a second indicating circuit 500 respectively connected to the heating module. The first indicating circuit 400 includes a stop indicator light D2, which is connected in series with a normally closed contact of contactor KM. The second indicating circuit 500 includes a running indicator light D1, which is connected in series with another normally open contact of contactor KM. The normally closed contact of contactor KM connected in series with the stop indicator light D2 can be represented as a first normally closed contact KM3, and the other normally open contact connected in series with the running indicator light D1 can be represented as a second normally open contact KM2. That is, when the heating circuit 100 of the heating module is disconnected, the red light of the stop indicator light D2 of the first indicating circuit 400 illuminates. When the heating circuit 100 of the heating module is closed, the green light of the running indicator light D1 of the second indicating circuit 500 illuminates.
[0051] Specifically, in the automatic control circuit 200, the temperature and humidity controller KZ is activated when either the temperature sensor WD or the humidity sensor SD reaches a preset threshold. For example, when the temperature is below 24°C, the temperature sensor WD reaches the preset threshold, and thus the temperature sensor WD is activated. Alternatively, when the gas humidity is above 70%, the humidity sensor SD reaches the preset threshold, and thus the humidity sensor SD is activated. When either the temperature sensor WD or the humidity sensor SD is activated, the coil in the contactor KM connected to the temperature and humidity controller KZ is energized, the normally open contact in the contactor KM closes, the normally closed contact opens, and the heating circuit 100 is activated. That is, the first normally open contact KM1 and the second normally open contact KM2 close, and the first normally closed contact KM3 opens, thereby causing the stop indicator D2 in the first indicator circuit 400, which is connected in series with the first normally closed contact KM3, to disconnect, and the run indicator D1 in the second indicator circuit 500, which is connected in series with the second normally open contact KM2, to activate. When neither the temperature sensor WD nor the humidity sensor SD reaches the preset threshold, the temperature and humidity controller KZ disconnects, which in turn disconnects the contactor KM and the heating circuit 100. When the contactor KM is in the disconnected state, the normally open contact is open and the normally closed contact is closed. That is, the first normally open contact KM1 and the second normally open contact KM2 are open, and the first normally closed contact KM3 is closed. This causes the stop indicator D2, which is connected in series with the first normally closed contact KM3 in the first indicator circuit 400, to conduct, and the run indicator D1, which is connected in series with the second normally open contact KM2 in the second indicator circuit 500, to disconnect.
[0052] Alternatively, in the manual control circuit 300, when the heating circuit 100 needs to be turned on, the operator presses the start button SB2. At this time, the start button SB2 is turned on, and current flows through the changeover switch SA1, the stop button SB1, and the start button SB2 to the contactor KM, thus turning on the contactor KM. With the contactor KM turned on, the first normally open contact KM1 closes, the second normally open contact KM2 closes, and the first normally closed contact KM3 opens. At this time, the heating circuit 100 is turned on, and the running indicator D1 in the second indicator circuit 500, connected in series with the second normally open contact KM2, is also turned on. Then, the operator releases the button, and the start button SB2 opens. Since the first normally open contact KM1 is turned on at this time, and the first normally open contact KM1 is connected in parallel with the start button SB2, even when the start button SB2 is open, current can still flow through the changeover switch SA1, the stop button SB1, and the first normally open contact KM1 to the contactor KM, thus allowing the heater R to continue operating when the operator releases the start button SB2. Since contactor KM is in the ON state, the operation indicator D1, which is connected in series with the second normally open contact KM2, is also ON. That is, the operation indicator D1 is synchronized with the conduction of the heating circuit 100. When it is necessary to disconnect the heating circuit 100, the operator presses the stop button SB1. At this time, the normally closed stop button SB1 opens, contactor KM opens, and thus the heating circuit 100 is disconnected. Furthermore, with contactor KM open, the first normally open contact KM1 and the second normally open contact KM2 open, and the first normally closed contact KM3 closes. The stop indicator D2, which is connected in series with the first normally closed contact KM3, is also ON. That is, the conduction of the stop indicator D2 is synchronized with the disconnection of the heating circuit 100.
[0053] In some embodiments of this application, the automatic control circuit 200 and the manual control circuit 300 are encapsulated within a circuit housing, while the operable parts of the selector switch SA1, stop button SB1, and start button SB2 are exposed outside the circuit housing. By exposing the operable parts outside the circuit housing, operators can more easily operate the selector switch SA1 and press the stop button SB1 and start button SB2 without opening the circuit housing, avoiding direct contact with internal circuit components and reducing operational risks. Furthermore, exposing the operable parts of the selector switch SA1, stop button SB1, and start button SB2 outside the circuit housing allows for immediate operation in emergencies to shut off the heating circuit 100, improving convenience and safety. It also facilitates maintenance personnel in inspecting and maintaining the control circuit.
[0054] In some embodiments of this application, the heating circuit 100 includes an overload protector JD-8 and a heater R; the heater R is connected to the overload protection circuit, the control module, and the indicator module, respectively. The overload protection circuit refers to a circuit composed of the overload protector JD-8. The overload protector JD-8 can monitor the current of the heater R and disconnect the circuit when the current exceeds the safe range, preventing overheating, short circuits, and other situations from occurring, thereby improving the safety of the heating circuit 100 and avoiding potential dangers caused by overload.
[0055] In some embodiments of this application, the dehumidification circuit further includes a protection circuit 600, which is connected to both the heating module and the control module. The protection circuit 600 includes a short-circuit fuse F and an overload protector JD-8. Specifically, the protection circuit 600 is connected to the heating circuit 100 in the heating module and the automatic control circuit 200 or manual control circuit 300 in the control module. The short-circuit fuse F and the overload protector JD-8 can monitor and limit current flow, effectively preventing dangerous situations such as fires and equipment damage caused by short circuits or overloads, thus improving the safety of equipment and personnel. By setting the short-circuit fuse F and the overload protector JD-8, damage to the heating circuit 100 and control circuit equipment caused by circuit faults or abnormalities can be reduced, extending the service life of the equipment and reducing maintenance costs. The presence of the protection circuit 600 helps improve the stability and reliability of the dehumidification circuit, ensuring normal and safe circuit operation and guaranteeing long-term stable operation of the equipment.
[0056] It should be noted that, in this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is 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 can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0057] Furthermore, in this application, unless otherwise expressly 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 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 application according to the specific circumstances.
[0058] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A moisture-proof and dust-proof device, characterized in that, include: Moisture-proof and dust-proof devices and dehumidification circuits, among which, The moisture-proof and dust-proof device includes a ventilation window, which is a box structure. One side of the ventilation window is an exhaust port, and the other side is an air inlet. The air inlet is equipped with a dustproof component. The dehumidification circuit is located inside the ventilation window, and includes a heating module, a control module, an indicator module, and a conversion module; wherein... The heating module is disposed between the exhaust port and the air inlet, and is located close to the exhaust port; the heating module is connected to the control module and the indicator module respectively; The control module and the indicator module are located near the exhaust port. The control module is used to control the heating module to turn heating on or off, and the indicator module is used to indicate the working status of the heating module.
2. The device according to claim 1, characterized in that, The control module includes an automatic control circuit and a manual control circuit, and the conversion module includes a conversion switch; The automatic control circuit and the manual control circuit are respectively connected to the heating circuit of the heating module and the changeover switch; The selector switch is used to switch the conduction of the automatic control circuit or manual control circuit with the heating circuit; The automatic control circuit includes a temperature sensor, a humidity sensor, and a temperature and humidity controller. The temperature and humidity controller is connected to the temperature sensor and the humidity sensor respectively, and is used to control the heating circuit to turn on or off according to the temperature or humidity. The manual control circuit is used by the user to control the heating circuit to turn on or off.
3. The device according to claim 2, characterized in that, The automatic control circuit and the manual control circuit are respectively connected to the heating circuit via contactors.
4. The device according to claim 3, characterized in that, The manual control circuit includes a stop button and a start button, wherein the stop button is a normally closed button and the start button is a normally open button; The stop button and the start button are connected in series, and one normally open contact of the contactor is connected in parallel with the start button.
5. The device according to claim 4, characterized in that, The automatic control circuit and the manual control circuit are encapsulated within a circuit housing, while the operable parts of the selector switch, the stop button, and the start button are exposed on the outside of the circuit housing.
6. The device according to claim 4, characterized in that, The indicator module includes a first indicator circuit and a second indicator circuit, which are respectively connected to the heating module. The first indicating circuit includes a stop indicator light, which is connected in series with a normally closed contact of the contactor. The second indicating circuit includes a run indicator light, which is connected in series with another normally open contact of the contactor.
7. The device according to claim 2, characterized in that, The heating circuit includes an overload protector and a heater; The heater is connected to the overload protection circuit, the control module, and the indicator module, respectively.
8. The device according to claim 1, characterized in that, The dehumidification circuit also includes a protection circuit, which is connected to the heating module and the control module respectively; The protection circuit includes a short-circuit fuse and an overload protector.
9. The device according to claim 1, characterized in that, The dustproof component includes a dustproof net and a dustproof cotton, with the dustproof cotton hung on the dustproof net.
10. The device according to claim 1, characterized in that, The ventilation window is provided with multiple grilles, and there are multiple dustproof components, with each dustproof component corresponding to one grille.