Prefabricated cabin self-cleaning intelligent temperature control fresh air system

Abstract

The utility model discloses a self-cleaning intelligent temperature control fresh air system of a prefabricated cabin, which belongs to the technical field of temperature control air exhaust and comprises a fresh air supply module and an axial flow air exhaust module which are arranged in the prefabricated cabin and communicated with an inner cabin of the prefabricated cabin through air ducts. The axial flow air exhaust module and the fresh air supply module are oppositely arranged on the two sides of the prefabricated cabin, a temperature control probe used for monitoring the temperature in the prefabricated cabin is further arranged in the prefabricated cabin, the temperature control probe, the fresh air supply module and the axial flow air exhaust module are all connected with the PLC host, and the axial flow air exhaust module comprises a plurality of axial flow air exhaust fans arranged in parallel. The fresh air supply module comprises a first fresh air supply machine and a second fresh air supply machine which are arranged in parallel, the fresh air supply module and the axial flow air exhaust module can work independently, and by arranging a fresh air self-cleaning air supply system and an air exhaust axial flow fan, the temperature in the cabin body is reduced through air circulation.

Description

Technical Field

[0001] This utility model relates to the field of temperature control and ventilation technology, specifically to a prefabricated cabin self-cleaning intelligent temperature control fresh air system. Background Technology

[0002] With the intelligent development of power systems, prefabricated modules serve as core power equipment integration units in substations, data centers, and other locations, highly integrating precision electrical equipment, communication devices, and energy storage modules. These devices continuously generate significant heat during operation. If the internal temperature cannot be effectively controlled, it will lead to decreased equipment performance, shortened lifespan, and even safety accidents. Furthermore, the relatively enclosed nature of prefabricated modules makes them susceptible to the intrusion of external dust and contaminants, affecting not only heat dissipation efficiency but also potentially causing short circuits and other malfunctions due to dust accumulation.

[0003] Traditional prefabricated cabin temperature control and exhaust systems mostly employ a single mechanical exhaust or simple fresh air exchange mode, which has many drawbacks. On the one hand, their temperature control relies on fixed threshold control, failing to dynamically adjust according to real-time temperature changes within the cabin, resulting in insufficient temperature control accuracy and significant energy waste. On the other hand, existing systems lack effective air filtration and self-cleaning functions; filters require regular manual disassembly and cleaning, leading to high maintenance costs and susceptibility to filter clogging and delayed replacement, affecting ventilation efficiency. Furthermore, the fresh air supply and exhaust equipment in traditional systems operate independently, unable to coordinate, hindering the rapid establishment of air circulation within the cabin and failing to meet the dual requirements of stable temperature control and a clean environment for prefabricated cabins. Therefore, there is an urgent need to develop a fresh air system with self-cleaning capabilities and intelligent temperature control to ensure the safe and stable operation of equipment within prefabricated cabins. Utility Model Content

[0004] The purpose of this utility model is to propose a prefabricated cabin self-cleaning intelligent temperature control fresh air system. This system uses air circulation to reduce the internal temperature of the cabin by configuring a self-cleaning fresh air supply system and an exhaust axial flow fan that work together.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a prefabricated cabin self-cleaning intelligent temperature-controlled fresh air system, including a fresh air supply module and an axial flow exhaust module installed in the prefabricated cabin. The fresh air supply module and the axial flow exhaust module are connected to the cabin inside the prefabricated cabin through air ducts. The axial flow exhaust module and the fresh air supply module are arranged opposite to each other on both sides of the prefabricated cabin. A temperature control probe for monitoring the temperature inside the prefabricated cabin is also installed in the prefabricated cabin. The temperature control probe, the fresh air supply module, and the axial flow exhaust module are all connected to a PLC controller host. The axial flow exhaust module includes multiple axial flow exhaust fans arranged in parallel. The fresh air supply module includes a first fresh air supply fan and a second fresh air supply fan arranged in parallel. The fresh air supply module and the axial flow exhaust module can operate independently.

[0006] To further optimize this utility model, the following technical solutions may be preferred:

[0007] Preferably, four temperature control probes are provided, two of which are located in the prefabricated compartment corresponding to the oil system layout position, and the other two are located in the prefabricated compartment corresponding to the synchronous condenser layout position.

[0008] Preferably, the prefabricated cabin has mounting holes corresponding to the positions of the fresh air supply module and the axial flow exhaust module. A modular housing is detachably installed in the mounting holes. The modular housing is used to install the axial flow exhaust fan and the fresh air supply module. The mounting holes are provided with snap-fit ​​protrusions around them. The outer wall of the modular housing is provided with a slot that cooperates with the snap-fit ​​protrusions. The outer side of the modular housing is provided with an anti-vibration rubber pad layer.

[0009] Preferably, the prefabricated cabin is equipped with a multi-stage self-cleaning filter device corresponding to the air inlet position of the fresh air supply module. The multi-stage self-cleaning filter device includes a primary filter, a medium-efficiency filter layer, and a high-efficiency filter layer. The primary filter is a washable metal mesh that intercepts larger dust particles. The medium-efficiency filter layer is a pleated non-woven filter element, which is periodically shaken by an electric push rod to allow dust to fall into the dust collection box. The high-efficiency filter layer uses an electrostatic dust removal module that adsorbs fine particles through a high-voltage electric field.

[0010] Preferably, the air outlet of the fresh air supply module adopts a diffuser louver structure to increase the fresh air diffusion area and ensure uniform air distribution in the cabin; the air inlet of the axial flow exhaust module is equipped with a guide plate to guide the air in the cabin to flow efficiently to the exhaust outlet; the air duct adopts a double-layer heat-insulating metal structure, with an inner layer of galvanized steel plate and an outer layer of fireproof heat-insulating cotton to reduce heat loss and condensation.

[0011] Preferably, temperature sensors are installed in the air ducts of the fresh air supply module and the axial flow exhaust module to monitor the intake and exhaust temperatures in real time.

[0012] Preferably, electrically adjustable dampers are installed in the fresh air supply duct and the axial flow exhaust duct. When the PLC controller host determines that the ventilation volume needs to be adjusted based on the temperature control probe data, in addition to controlling the fan speed, the damper opening is adjusted synchronously.

[0013] This prefabricated cabin self-cleaning intelligent temperature-controlled fresh air system, through multiple optimized designs, demonstrates significant beneficial effects in terms of temperature control efficiency, equipment protection, and air purification.

[0014] (1) In terms of precise temperature control, four temperature control probes are respectively positioned to monitor the prefabricated cabin oil system and the synchronous condenser. This allows for focused monitoring of key heat-generating areas. Combined with temperature sensors in the air duct, these probes provide multi-dimensional temperature data to the PLC controller, achieving high-precision temperature control of ±1℃ and effectively ensuring the stability of equipment operation. Meanwhile, electrically adjustable dampers are installed in the air ducts of the fresh air supply module and the axial flow exhaust module. These dampers can be linked with the fan speed for rapid response to changes in cabin temperature. Compared with the traditional fixed ventilation mode, this can improve temperature control efficiency by 30%.

[0015] (2) In terms of equipment installation and operation support, the modular box with the design of the mounting protrusion and slot can realize the quick disassembly and assembly of the axial flow exhaust fan and the fresh air supply module, improving the convenience of maintenance by more than 50%; the anti-vibration rubber pad on the outside of the box can reduce the vibration and noise transmission of the fan by more than 70% during operation, reduce the impact on the prefabricated cabin structure and internal equipment, and extend the service life of the equipment.

[0016] (3) In terms of air purification and ventilation, the multi-stage self-cleaning filter can sequentially intercept large dust particles, fine dust and tiny particles, with an overall filtration efficiency of 99.8%. Moreover, through the self-cleaning functions such as electric push rod to shake the filter element and electrostatic dust adsorption, the frequency of manual maintenance is greatly reduced. The design of the diffused louvered air outlet and the guide plate air inlet makes the fresh air diffuse evenly and the exhaust air circulates efficiently, increasing the air circulation efficiency in the cabin by 40%. Combined with the double-layer heat-insulated metal air duct, it can reduce heat loss by 60% and avoid condensation from damaging the equipment.

[0017] In summary, through multi-faceted optimization, this system significantly improves the environmental control capabilities of the prefabricated cabin, reduces operation and maintenance costs, and provides a reliable guarantee for the stable operation of equipment inside the cabin. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall layout of a self-cleaning intelligent temperature-controlled fresh air system;

[0019] Figure 2 A schematic diagram of the connection of the linkage output device in the prefabricated cabin self-cleaning intelligent temperature-controlled fresh air system;

[0020] Figure 3 This is a wiring diagram of the auxiliary control device in the prefabricated cabin self-cleaning intelligent temperature-controlled fresh air system.

[0021] The components include: 1. Prefabricated cabin; 2. Oil system; 3. Synchronous converter; 4. First fresh air supply fan; 5. Second fresh air supply fan; 6. Axial flow exhaust module; 7. Modular enclosure; 8. Temperature sensor; 9. Fireproof and heat-insulating cotton layer; 10. Galvanized steel plate layer; 11. Electric adjustable damper; 12. Primary filter; 13. Medium-efficiency filter layer; 14. High-efficiency filter layer. Detailed Implementation

[0022] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Example 1:

[0025] like Figure 1-3As shown, a prefabricated cabin self-cleaning intelligent temperature-controlled fresh air system includes a fresh air supply module and an axial flow exhaust module installed in the prefabricated cabin 1. The fresh air supply module and the axial flow exhaust module are connected to the cabin inside the prefabricated cabin through air ducts. The axial flow exhaust module 6 and the fresh air supply module are installed opposite each other on both sides of the prefabricated cabin. A temperature control probe for monitoring the temperature inside the prefabricated cabin is also installed inside the prefabricated cabin. The temperature control probe, the fresh air supply module, and the axial flow exhaust module are all connected to the PLC controller host. The axial flow exhaust module includes multiple axial flow exhaust fans installed in parallel. The fresh air supply module includes a first fresh air supply fan 4 and a second fresh air supply fan 5 installed in parallel. The fresh air supply module and the axial flow exhaust module can operate independently. Four temperature control probes are installed, two in the prefabricated compartment corresponding to the oil system 2, and the other two in the prefabricated compartment corresponding to the synchronous condenser 3. In this embodiment, the axial flow exhaust module includes axial flow fans #1, #2, #3, #4, #5, and #6. The specific temperature control process is as follows: When the temperature at any of the probes is below 15 degrees Celsius, the first and second independent self-cleaning fresh air supply fans and axial flow fans #1, #2, #3, #4, #5, and #6 automatically stop. When the temperature at any probe point exceeds 20 degrees Celsius, the first fresh air supply fan (24,000 cubic meters) and two exhaust fans automatically start. (Axial flow fan #1 and axial flow fan #3); When the temperature at any measuring point exceeds 30 degrees Celsius, the first fresh air supply fan (24,000 cubic meters), the second fresh air supply fan (12,000 cubic meters), and four exhaust fans (axial flow fan #2, axial flow fan #3, axial flow fan #4, and axial flow fan #5) will automatically activate. Each axial flow fan has a power of 0.3KW (220V), the first fresh air supply fan has a power of 15KW (380V), and the second fresh air supply fan has a power of 10KW (380V).

[0026] In a preferred embodiment, the prefabricated cabin 1 has mounting holes corresponding to the positions of the fresh air supply module and the axial flow exhaust module. A modular housing 7 is detachably installed within these mounting holes. The modular housing is used to install the axial flow exhaust fan and the fresh air supply module. The mounting holes are surrounded by snap-fit ​​protrusions, and the outer wall of the modular housing has slots that mate with these protrusions, enabling rapid assembly and disassembly of the axial flow exhaust fan and the fresh air supply module. The installation process requires no tools, and a single person can complete the equipment replacement within 5 minutes. Compared to traditional screw fixing methods, maintenance efficiency is improved by over 80%. The outer side of the modular housing is fitted with an anti-vibration rubber pad. This reduces the vibration generated during fan operation by 60%-70%, effectively reducing the impact of equipment resonance on the prefabricated cabin structure, while also reducing operating noise by more than 25 decibels, creating a stable operating environment for the equipment inside the cabin.

[0027] In a preferred embodiment, a multi-stage self-cleaning filter device is installed on the prefabricated cabin 1 at the air inlet position corresponding to the fresh air supply module. The multi-stage self-cleaning filter device includes a primary filter 12, a medium-efficiency filter layer 13, and a high-efficiency filter layer 14. The primary filter is a washable metal mesh that intercepts larger dust particles. The medium-efficiency filter layer is a pleated non-woven fabric filter element, which is periodically shaken by an electric push rod to allow dust to fall into the dust collection box. The high-efficiency filter layer uses an electrostatic dust removal module that adsorbs fine particles through a high-voltage electric field.

[0028] As a preferred implementation, the air outlet of the fresh air supply module adopts a diffuser-type louver structure. The diffuser-type louver outlet, with its 45° angled blade design, achieves a fresh air diffusion angle of 120°. Compared to traditional straight outlets, this improves the uniformity of air mixing within the chamber by 40% and eliminates temperature dead zones. The axial flow exhaust module's air inlet is equipped with a guide plate with an arc-shaped curved surface structure, reducing airflow resistance by 30% and significantly improving exhaust efficiency. The ductwork employs a double-layer insulated metal structure, with an inner galvanized steel plate layer 10 and an outer layer wrapped with fireproof insulation cotton 9, reducing heat loss and condensation. The outer fireproof insulation cotton keeps the duct surface temperature difference from the ambient temperature within ±3℃, effectively preventing condensation and protecting equipment from moisture damage.

[0029] In a preferred embodiment, temperature sensors 8 are installed in the ducts of both the fresh air supply module and the axial flow exhaust module to monitor the intake and exhaust air temperatures in real time. The temperature sensors in the ducts collect intake and exhaust air temperature data twice per second, forming a three-dimensional monitoring network with the temperature control probes to provide accurate temperature parameters to the PLC controller. The electrically adjustable damper, combined with fan speed regulation, enables stepless adjustment of the ventilation volume from 0-100%. Compared to single fan speed regulation, the airflow control accuracy is improved by 50%, allowing for rapid response to changes in cabin temperature and keeping temperature fluctuations within ±1℃, significantly enhancing the dynamic response capability and energy-saving effect of the temperature control system.

[0030] As a preferred embodiment, an electrically adjustable damper 11 is installed in the air duct for fresh air supply and the air duct for axial flow exhaust. When the PLC controller host determines that the ventilation volume needs to be adjusted based on the temperature control probe data, in addition to controlling the fan speed, the opening of the damper is adjusted synchronously.

[0031] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention 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 the present invention should be included within the protection scope of the present invention.

Claims

1. A prefabricated cabin self-cleaning intelligent temperature-controlled fresh air system, characterized in that: The system includes a fresh air supply module and an axial flow exhaust module installed within the prefabricated cabin. The fresh air supply module and the axial flow exhaust module are connected to the cabin compartments within the prefabricated cabin via air ducts. The axial flow exhaust module and the fresh air supply module are positioned opposite each other on both sides of the prefabricated cabin. A temperature control probe for monitoring the temperature inside the prefabricated cabin is also installed within the prefabricated cabin. The temperature control probe, the fresh air supply module, and the axial flow exhaust module are all connected to a PLC controller host. The axial flow exhaust module includes multiple axial flow exhaust fans arranged in parallel. The fresh air supply module includes a first fresh air supply fan and a second fresh air supply fan arranged in parallel. The fresh air supply module and the axial flow exhaust module can operate independently.

2. The prefabricated cabin self-cleaning intelligent temperature-controlled fresh air system according to claim 1, characterized in that: Four temperature control probes are provided, two of which are located in the prefabricated compartment corresponding to the oil system layout, and the other two are located in the prefabricated compartment corresponding to the synchronous condenser layout.

3. The prefabricated cabin self-cleaning intelligent temperature-controlled fresh air system according to claim 1, characterized in that: The prefabricated cabin has mounting holes corresponding to the positions of the fresh air supply module and the axial flow exhaust module. A modular housing is detachably installed in the mounting holes. The modular housing is used to install the axial flow exhaust fan and the fresh air supply module. The mounting holes are provided with snap-fit ​​protrusions around them. The outer wall of the modular housing is provided with a slot that matches the snap-fit ​​protrusions. The outer side of the modular housing is provided with an anti-vibration rubber pad layer.

4. The prefabricated cabin self-cleaning intelligent temperature-controlled fresh air system according to claim 1, characterized in that: The prefabricated cabin is equipped with a multi-stage self-cleaning filter device corresponding to the air inlet position of the fresh air supply module. The multi-stage self-cleaning filter device includes a primary filter, a medium-efficiency filter layer, and a high-efficiency filter layer. The primary filter is a washable metal mesh that intercepts larger dust particles. The medium-efficiency filter layer is a pleated non-woven filter element. The filter element is periodically shaken by an electric push rod, causing dust to fall into the dust collection box. The high-efficiency filter layer adopts an electrostatic dust removal module, which adsorbs tiny particles through a high-voltage electric field.

5. The prefabricated cabin self-cleaning intelligent temperature-controlled fresh air system according to claim 1, characterized in that: The air outlet of the fresh air supply module adopts a diffuser louver structure to increase the fresh air diffusion area and ensure uniform air distribution in the cabin; the air inlet of the axial flow exhaust module is equipped with a guide plate to guide the air in the cabin to flow efficiently to the exhaust outlet; the air duct adopts a double-layer heat-insulating metal structure, with an inner layer of galvanized steel plate and an outer layer of fireproof heat-insulating cotton to reduce heat loss and condensation.

6. The prefabricated cabin self-cleaning intelligent temperature-controlled fresh air system according to claim 1, characterized in that: Temperature sensors are installed in the air ducts of the fresh air supply module and the axial flow exhaust module to monitor the intake and exhaust temperatures in real time.

7. The prefabricated cabin self-cleaning intelligent temperature-controlled fresh air system according to claim 1, characterized in that: Electric adjustable dampers are installed in the fresh air supply duct and the axial flow exhaust duct. When the PLC controller host determines that the ventilation volume needs to be adjusted based on the temperature control probe data, it will adjust the damper opening simultaneously in addition to controlling the fan speed.

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