A cabinet temperature control mechanism

Abstract

The utility model discloses a control cabinet temperature control mechanism, include: main part structure, the main part structure includes the cabinet body and can open and shut the cabinet door on the cabinet body, temperature control structure sets up in the inside of cabinet body, temperature control structure includes air intake and air outlet, and air intake is set up in the bottom of cabinet body for outside airflow to enter, and air intake is installed in the filter screen for dustproof, and air outlet is set up in the inside top of cabinet body for discharging the heat in the cabinet body, and air outlet is installed in the exhaust fan, the cabinet body top is provided with rain cover shell, and air outlet is communicated in the inner chamber of rain cover shell, and the rain cover shell bottom is provided with the heat dissipation hole. The whole design avoids the problem that the protection level reduces because of too many openings of the traditional control cabinet. While guaranteeing the heat dissipation, the invasion of dust and water vapor is effectively blocked, so that the control cabinet can also maintain high protection performance in the harsh operating environment.

Description

Technical Field

[0001] This utility model relates to the field of control cabinet technology, specifically to a temperature control mechanism for a control cabinet. Background Technology

[0002] A control cabinet is a standardized or customized enclosure structure that integrates electrical components, wiring, and operating interfaces. It is widely used in industrial automation (such as production lines and machine tools), building electrical systems (such as elevators and HVAC systems), energy and chemical industries (such as pumps, valves, and reactors), and municipal engineering (such as sewage treatment and streetlights). It is the core control unit that ensures the safe, stable, and efficient operation of electrical systems.

[0003] As the number of components inside the control cabinet increases, so does the heat generated. To maintain a balanced internal temperature, ensure proper operation of the components, and reduce failure rates, temperature control within the control cabinet becomes crucial. For example, patent CN202310739026.7 discloses a PLC control cabinet with active heat dissipation and temperature control, relating to the field of PLC control cabinets. This PLC control cabinet includes a cabinet body. A mounting bracket for installing electrical equipment is bolted to the front of the inner wall of the cabinet. Several electrical equipment bodies are mounted on the mounting bracket. A PLC logic controller is also mounted on the front of the inner wall of the cabinet. Heat dissipation vents are provided on both sides of the cabinet body.

[0004] However, traditional control cabinets using the aforementioned technical solutions still have drawbacks. On the one hand, excessive openings significantly reduce the protection level of the control cabinet, which may be exposed to dust, moisture, and other substances in the operating environment. This reduced protection level makes internal electronic components more susceptible to these harmful factors, increasing the probability of malfunctions and shortening the equipment's lifespan. On the other hand, relying solely on openings for heat dissipation often results in inadequate cooling performance.

[0005] Therefore, we need to propose a temperature control mechanism for the control cabinet. Utility Model Content

[0006] The purpose of this invention is to provide a temperature control mechanism for a control cabinet. The overall design avoids the problem of reduced protection levels caused by excessive openings in traditional control cabinets. The rationally arranged air inlets, outlets, and rainproof cover effectively prevent dust and moisture intrusion while ensuring heat dissipation, enabling the control cabinet to maintain high protection performance even in harsh operating environments, thus solving the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A temperature control mechanism for a control cabinet, comprising:

[0009] The main structure includes a cabinet and a cabinet door that can be opened and closed on the cabinet. The cabinet door is installed on the opening side of the cabinet via a hinge. An installation plate is provided inside the cabinet for installing electrical components.

[0010] A temperature control structure is installed inside the cabinet. The temperature control structure includes an air inlet and an air outlet. The air inlet is located at the bottom of the cabinet to allow external airflow to enter, and a dust filter is installed inside the air inlet. The air outlets are symmetrically located at the top of the cabinet to expel heat from the cabinet, and an exhaust fan is installed inside the air outlet.

[0011] The top of the cabinet is equipped with a rainproof cover, the air outlet is connected to the inner cavity of the rainproof cover, and the bottom of the rainproof cover has heat dissipation holes.

[0012] Preferably, the rain cover has a tapered design that is smaller at the top and larger at the bottom, and the rain cover is located on one side above the back of the cabinet and flush with the back of the cabinet, so as to avoid interference with the wall-mounted installation of the cabinet.

[0013] Preferably, the bottom three sides of the rainproof cover are provided with several heat dissipation holes, which are equidistantly distributed and face downwards to prevent rainwater from entering.

[0014] Preferably, the mounting plate is also equipped with a temperature sensor and a control box. The control box has a built-in PLC controller, and the temperature sensor and exhaust fan are both connected to the control box via wires.

[0015] Preferably, it also includes a water-absorbing structure disposed at the bottom inside the rainproof cover. The water-absorbing structure includes a placement box, which is placed inside the rainproof cover and located between two sets of air outlets. The placement box contains a silica gel desiccant, and the outer wall of the placement box is surrounded by through holes to allow the desiccant to come into contact with the air.

[0016] Preferably, the top of the rain cover has a maintenance notch, a sealing gasket is sealed and embedded in the maintenance notch, and a top plate is bonded to the top of the sealing gasket. The top plate completely covers the maintenance notch. Removing the sealing gasket through the top plate facilitates the replacement of the dehumidifier and the maintenance of the exhaust fan.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. An air inlet filter effectively filters dust from the external airflow entering the cabinet, significantly reducing dust accumulation on the electronic components inside. This lowers the risk of short circuits, poor contact, and other malfunctions caused by dust, ensuring stable operation of electronic components and extending the equipment's lifespan.

[0019] 2. The silica gel desiccant placed inside the absorbent structure, through the perforations surrounding the outer wall, fully contacts the air, effectively absorbing moisture from the air inside the cabinet and reducing humidity. Meanwhile, the downward-facing ventilation holes at the bottom of the rainproof cover prevent rainwater from directly entering the cabinet, and the tapered design prevents rainwater accumulation, providing comprehensive protection for the internal electronic components from moisture damage.

[0020] 3. The overall design avoids the problem of reduced protection level caused by too many openings in traditional control cabinets. The rationally arranged air inlets, outlets, and rainproof covers ensure heat dissipation while effectively blocking the intrusion of dust and moisture, enabling the control cabinet to maintain high protection performance even in harsh operating environments. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the cabinet structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the rainproof cover of this utility model.

[0024] In the diagram: 1. Cabinet body; 2. Cabinet door; 3. Fixing plate; 4. Mounting plate; 5. Air inlet; 6. Filter screen; 7. Rain cover; 8. Air outlet; 9. Exhaust fan; 10. Heat dissipation hole; 11. Control box; 12. Temperature sensor; 13. Placement box; 14. Maintenance notch; 15. Top plate; 16. Sealing gasket. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-3 This utility model provides a technical solution:

[0027] A temperature control mechanism for a control cabinet, comprising:

[0028] The main structure includes a cabinet 1 and a cabinet door 2 that can be opened and closed on the cabinet 1. The cabinet door 2 is installed on the opening side of the cabinet 1 via a hinge. An installation plate 4 is provided inside the cabinet 1 for installing electrical components. A temperature control structure is set inside the cabinet 1. The temperature control structure includes an air inlet 5 and an air outlet 8. The air inlet 5 is located at the bottom of the cabinet 1 to allow external airflow to enter, and a dust filter 6 is installed inside the air inlet 5. The air outlet 8 is symmetrically located at the top inside the cabinet 1 to expel heat from the cabinet 1, and an exhaust fan 9 is installed inside the air outlet 8. A rainproof cover 7 is provided on the top of the cabinet 1. The air outlet 8 is connected to the inner cavity of the rainproof cover 7. A heat dissipation hole 10 is provided at the bottom of the rainproof cover 7. The rain cover 7 has a tapered design, wider at the bottom and narrower at the top. It is positioned flush with the back of the cabinet 1 on one side above the cabinet body 1 to avoid interfering with wall-mounting. Fixing plates 3 with mounting holes are provided on both sides of the cabinet 1 for wall-mounting. Several ventilation holes 10 are equally spaced on the bottom three sides of the rain cover 7, facing downwards to prevent rainwater from entering.

[0029] In the main structure, the cabinet 1 serves as the basic carrier, and the cabinet door 2 allows for component maintenance. The mounting plate 4 provides fixed support for the electronic components. The temperature control structure adopts a directional airflow design of "bottom inlet - top exhaust": due to its high density, the external cold air flows in naturally from the air inlet 5 at the bottom of the cabinet 1. When it flows through the internal heating element, it absorbs heat to form a hot airflow. The hot airflow is actively drawn into the inner cavity of the rainproof cover 7 by the exhaust fan 9 in the top air outlet 8. The rainproof cover 7 has a conical structure that is smaller at the top and larger at the bottom, which can guide the hot airflow to diffuse in all directions and finally exhaust it from the cabinet 1 through the bottom-facing heat dissipation holes 10. Meanwhile, the tapered design of the rain cover 7 allows rainwater to slide off naturally, preventing it from accumulating on the top and preventing rainwater from directly entering the cabinet 1, thus protecting the internal electronic components from rain damage. The downward-facing design of the ventilation holes 10 prevents rainwater from entering, combining heat dissipation and protection functions. The back of the rain cover 7 is flush with the back of the cabinet 1, and together with the fixing plates 3 with fixing holes on both sides of the cabinet 1, the cover will not interfere with the wall or mounting parts during wall mounting, ensuring installation stability.

[0030] In summary, the combination of "bottom air intake + top active exhaust" improves heat dissipation efficiency. Compared with traditional open-hole natural heat dissipation, the airflow speed is increased and the heat exchange is more complete. It can quickly remove the heat from the components and solve the problem of "poor heat dissipation effect by opening holes alone".

[0031] Necessary openings are made only at the bottom (air inlet 5) and top (air outlet 8) of cabinet 1, replacing the traditional multi-sided openings and reducing external contact channels; the rainproof cover 7 has a conical design and downward heat dissipation holes 10, which can prevent rainwater from splashing in. Together with the air inlet 5 filter 6, it can initially prevent dust and improve the protection level of cabinet 1, avoiding dust and rainwater intrusion that could cause component failure.

[0032] The mounting holes on the mounting plate 3 meet the requirements for wall mounting, and the flush back structure of the rainproof cover 7 avoids installation interference, allowing the control cabinet to be stably installed on workshop walls, next to equipment, and other spaces, expanding the application scenarios.

[0033] For a preferred implementation, please refer to Figure 1-2 :

[0034] Temperature sensor 12 and control box 11 are also installed on mounting plate 4. Control box 11 has a built-in PLC controller. Temperature sensor 12 and exhaust fan 9 are both connected to control box 11 by wires.

[0035] Temperature sensor 12 is installed on mounting plate 4 of component assembly, which collects the temperature data inside the cabinet in real time and converts it into an electrical signal, which is then transmitted to the PLC controller built into control box 11. The PLC controller presets a temperature threshold (such as a conventional setting of starting at 35°C and stopping at 30°C). By comparing the real-time temperature with the threshold, it automatically outputs a control signal: when the temperature is ≥ the threshold, it triggers the exhaust fan 9 to accelerate and increase the speed to accelerate heat dissipation; when the temperature is ≤ the threshold, it controls the exhaust fan 9 to reduce the speed or even cut off the power to stop, thus achieving "heat dissipation on demand".

[0036] In summary, it achieves precise temperature control, avoiding energy waste and reducing ineffective energy consumption; the combination of real-time monitoring and automatic regulation keeps the cabinet temperature stable within a safe range, preventing components from aging due to high temperatures or condensation due to low temperatures, thus extending component lifespan; it eliminates the need for frequent manual fan starts and stops, reducing maintenance personnel's inspection and adjustment work and improving management efficiency. The automatic adjustment of the exhaust fan 9's operating status based on the actual temperature ensures effective heat dissipation while avoiding unnecessary energy consumption, improving the control cabinet's intelligence level and energy-saving performance.

[0037] For a preferred implementation, please refer to Figure 1-3 :

[0038] It also includes a water-absorbing structure, which is set at the bottom inside the rainproof cover 7. The water-absorbing structure includes a placement box 13, which is placed inside the rainproof cover 7 and located between two sets of air outlets 8. The placement box 13 contains a silica gel desiccant, and the outer wall of the placement box 13 is surrounded by through holes to allow the desiccant to come into contact with the air.

[0039] The water-absorbing structure is located between the two sets of air outlets 8 at the bottom of the rainproof cover 7. The silica gel desiccant in the box 13 comes into full contact with the hot airflow discharged from the air outlets 8 through the through holes surrounding the outer wall. The water vapor carried in the hot airflow (especially in humid environments) is physically adsorbed by the porous structure of the silica gel desiccant, forming hydrates that are fixed inside the desiccant, thus achieving airflow dehumidification. At the same time, the independent design of the box 13 can prevent the desiccant from directly contacting the exhaust fan 9 or the cover, preventing the desiccant powder from falling off and contaminating the components.

[0040] In summary, it achieves deep moisture protection, enhances the integrity of protection, and solves the problem that "dust and rain protection alone cannot cope with moisture." The silica gel desiccant has a high moisture absorption rate and can absorb more than 80% of the moisture in the airflow, preventing condensation of humid air inside the cabinet, preventing short circuits and corrosion of electronic components, and further reducing the probability of failure (the probability of failure is greatly reduced compared to no desiccant structure). The through-hole design of the placement box 13 ensures the desiccant effect while preventing desiccant particles from entering the cabinet 1 or exhaust fan 9 with the airflow, preventing particles from clogging the fan or adhering to the surface of components and affecting heat dissipation.

[0041] For a preferred implementation, please refer to Figure 1-3 :

[0042] The top of the rain cover 7 has a maintenance notch 14, and a sealing gasket 16 is sealed and embedded inside the maintenance notch 14. A top plate 15 is bonded to the top of the sealing gasket 16, and the top plate 15 completely covers the maintenance notch 14. Removing the sealing gasket 16 through the top plate 15 makes it easy to replace the dehumidifier and maintain the exhaust fan 9.

[0043] The maintenance notch 14 on the top of the rain cover 7 provides a maintenance access for internal components (water absorption structure, exhaust fan 9). During daily use, the sealing gasket 16 (which may be made of rubber) is embedded in the maintenance notch 14, and the top plate 15 covers the notch to form a sealed structure to prevent rainwater and dust from entering through the notch. When it is necessary to replace the silica gel desiccant or repair the exhaust fan 9, only the top plate 15 needs to be removed to directly operate the internal components without disassembling the entire rain cover 7.

[0044] Instead of the traditional method of "disassembling the cover for inspection", maintenance time is shortened, maintenance labor costs are reduced, and the problem of "contradiction between protective structure and maintenance convenience" is solved. The sealing gasket 16 ensures maintenance functionality while the rainproof cover 7 maintains a high level of protection, avoiding the degradation of protective performance due to maintenance, thus balancing "high protection" and "easy maintenance".

[0045] In this application, the control box 11 is controlled by a built-in PLC controller. The control circuit of the PLC controller can be implemented by a person skilled in the art through simple programming, which is common knowledge in the field. Furthermore, since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail here.

[0046] In summary, by adopting a protective system of "bottom filter 6 + downward heat dissipation holes 10 + silica gel dehumidification", the cabinet 1 only has a bottom air inlet 5 and a top air outlet 8 (replacing the traditional multi-sided openings). The air inlet 5 filter 6 intercepts dust, preventing dust accumulation from affecting component heat dissipation. The conical design of the rainproof cover 7, combined with the downward heat dissipation holes 10, can prevent rainwater from entering, and the back is flush with the cabinet 1 so as not to interfere with wall-mounted installation. The silica gel dehumidifier inside the rainproof cover 7 absorbs moisture in the airflow through the through holes of the placement box 13. From the three aspects of "dustproof, rainproof, and dehumidification", the protection level of the cabinet 1 is greatly improved, reducing the probability of electronic component failure and extending the service life of the equipment.

[0047] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A temperature control mechanism for a control cabinet, characterized in that, include: The main structure includes a cabinet (1) and a cabinet door (2) that can be opened and closed on the cabinet (1). The cabinet door (2) is installed on the opening side of the cabinet (1) by means of a hinge. An installation plate (4) is provided inside the cabinet (1) for installing electrical components. A temperature control structure is set inside the cabinet (1). The temperature control structure includes an air inlet (5) and an air outlet (8). The air inlet (5) is opened at the bottom of the cabinet (1) to allow external airflow to enter. A filter screen (6) for dust prevention is installed inside the air inlet (5). The air outlet (8) is symmetrically opened at the top inside the cabinet (1) to discharge heat inside the cabinet (1). An exhaust fan (9) is installed inside the air outlet (8). The top of the cabinet (1) is provided with a rainproof cover (7), the air outlet (8) is connected to the inner cavity of the rainproof cover (7), and the bottom of the rainproof cover (7) is provided with heat dissipation holes (10).

2. The temperature control mechanism for a control cabinet according to claim 1, characterized in that: The rain cover (7) has a tapered design with a smaller top and a larger bottom. The rain cover (7) is located on one side above the back of the cabinet (1) and is flush with the back of the cabinet (1) to avoid interfering with the wall-mounted installation of the cabinet (1).

3. The temperature control mechanism for a control cabinet according to claim 2, characterized in that: The bottom of the rainproof cover (7) has several heat dissipation holes (10) on the other three sides, and the heat dissipation holes (10) are evenly distributed and face downwards to prevent rainwater from entering.

4. The temperature control mechanism for a control cabinet according to claim 1, characterized in that: The mounting plate (4) is also equipped with a temperature sensor (12) and a control box (11). The control box (11) has a built-in PLC controller. The temperature sensor (12) and the exhaust fan (9) are both connected to the control box (11) by wires.

5. The temperature control mechanism for a control cabinet according to claim 1, characterized in that: It also includes a water-absorbing structure, which is set at the bottom inside the rainproof cover (7). The water-absorbing structure includes a placement box (13), which is placed inside the rainproof cover (7) and located between two sets of air outlets (8). The placement box (13) contains a silica gel desiccant, and the outer wall of the placement box (13) is surrounded by through holes to allow the desiccant to come into contact with the air.

6. The temperature control mechanism for a control cabinet according to claim 5, characterized in that: The top of the rain cover (7) is provided with a maintenance notch (14), and a sealing gasket (16) is sealed and embedded in the maintenance notch (14). A top plate (15) is bonded to the top of the sealing gasket (16), and the top plate (15) completely covers the maintenance notch (14). Removing the sealing gasket (16) through the top plate (15) makes it easy to replace the dehumidifier and maintain the exhaust fan (9).

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