A new type of motor home fresh air dehumidification system structure

By designing a fresh air and dehumidification system with circulating fans and air ducts for dust prevention in the RV, the problem of mold growth on the panels caused by water vapor accumulation in sealed areas was solved, achieving the dual effects of dehumidification and fresh air, thus improving the air quality inside the vehicle.

CN224311566UActive Publication Date: 2026-06-02SHANDONG XIHUA AUTOMOBILE MANUFACTURING CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANDONG XIHUA AUTOMOBILE MANUFACTURING CO LTD
Filing Date
2025-08-25
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

In traditional RVs, water vapor in sealed areas is difficult to circulate, causing mold to grow on cabinets and flooring materials, a problem that existing ventilation fans cannot effectively solve.

Method used

A novel fresh air and dehumidification system for RVs is designed, comprising a circulating fan, a dust-proof air duct, and an in-vehicle air circulation duct. The circulating fan draws in humid air from inside the vehicle and discharges it through the dust-proof air duct. Combined with the ventilation holes on the in-vehicle air circulation duct, air circulation is achieved. The system is powered by a battery.

Benefits of technology

It effectively reduces humidity in the sealed area, prevents mold growth on the panels, and at the same time replenishes fresh air, improves air quality inside the vehicle, and reduces the accumulation of odors and harmful gases.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224311566U_ABST
Patent Text Reader

Abstract

The utility model relates to a house car dehumidification technical field especially relates to a novel house car fresh air dehumidification system structure, including circulating fan, air guide dustproof pipeline and in -vehicle air circulation pipeline, the circulating fan sets up at the through -going mouth department of house car floor sheet metal, its input and in -vehicle air circulation pipeline intercommunication to draw the air in in -vehicle air circulation pipeline, the output and air guide dustproof pipeline intercommunication to discharge air, air guide dustproof pipeline sets up below house car floor, is used for guiding the humid air to export car, in -vehicle air circulation pipeline arranges in the house car inside, the utility model discloses the air exhaust function of circulating fan cooperation in -vehicle air circulation pipeline and the air vent on it corresponding with the house car internal space and along the interval distribution of extension path, can draw the humid air of in -vehicle sealed area such as cabinet body, floor below, and export car through air guide dustproof pipeline, solve the mildew problem of board material in traditional house car because of the water vapor accumulation of these sealed area.
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Description

Technical Field

[0001] This utility model relates to the field of RV dehumidification technology, and in particular to a novel RV fresh air dehumidification system structure. Background Technology

[0002] RVs are a type of fashionable vehicle imported from abroad. The home facilities on the vehicle include: bedding, stove, refrigerator, cabinets, sofa, dining table and chairs, washing facilities, air conditioning, TV, audio equipment and other furniture and appliances. They can be divided into driving area, living area, bedroom area, toilet area, kitchen area, etc. The water used for washing in the toilet will flow into the RV's sewage tank through the toilet base. However, the interior space is relatively small, and some water vapor will seep into the cabinets and under the floor, causing the cabinet panels and flooring to become moldy.

[0003] Traditional car ventilation fans can solve the problem of air circulation inside the car, but water vapor inside cabinets and under the floor is difficult to circulate due to the obstruction of the floor and cabinet doors, which leads to mold growth on the cabinet panels and flooring materials.

[0004] Based on the above situation, we propose a novel fresh air and dehumidification system structure for RVs to solve the above problems. Utility Model Content

[0005] This utility model provides a novel structure for a fresh air and dehumidification system for RVs to solve the problems existing in the prior art.

[0006] The technical problem solved by this utility model is achieved by the following technical solution:

[0007] A novel fresh air and dehumidification system structure for RVs includes a circulating fan, a dust-proof duct, and an in-vehicle air circulation duct. The circulating fan is installed at a through-hole in the RV floor sheet metal, with its input end connected to the in-vehicle air circulation duct to draw air from the duct and its output end connected to the dust-proof duct to exhaust air. The dust-proof duct is located under the RV floor to exhaust humid air outside the vehicle. The in-vehicle air circulation duct is arranged inside the RV and has multiple ventilation holes to allow air from the sealed areas inside the vehicle to enter the duct and be exhausted by the circulating fan.

[0008] Preferably, the interior of the air-guiding and dust-proof duct is equipped with a dust-proof filter sponge.

[0009] Preferably, a buffer and vibration damping component is bonded to the outer periphery of the circulating fan, and the buffer and vibration damping component is located between the circulating fan and the through-hole of the floor sheet metal.

[0010] Preferably, the ventilation holes of the in-vehicle air circulation duct are distributed at intervals along its extension path.

[0011] Preferably, the output end of the air duct and dustproof duct faces the rear of the RV.

[0012] Preferably, it also includes a power supply battery and a power supply harness, wherein the power supply harness is respectively connected to the power supply battery of the RV living area and the circulation fan.

[0013] The beneficial effects of this utility model are as follows: by using the ventilation action of the circulating fan in conjunction with the air circulation duct inside the vehicle and the ventilation holes that correspond to the interior space of the RV and are distributed at intervals along the extension path, humid air in sealed areas such as cabinets and under the floor can be extracted and discharged outside the vehicle through the air duct and dustproof duct. This solves the problem of mold growth on the panels in these sealed areas of traditional RVs caused by water vapor accumulation, extends the service life of the interior panels, and promotes the continuous replenishment of fresh air while expelling humid air, continuously improving the air quality inside the vehicle and reducing the accumulation of odors and harmful gases. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the isometric structure provided by this utility model;

[0016] Figure 2 The front view provided for this utility model;

[0017] Figure 3 This is an enlarged schematic diagram of the structure at point A in this utility model.

[0018] In the diagram, 1. Circulating fan; 2. Air duct and dustproof duct; 3. In-vehicle air circulation duct; 31. Ventilation hole; 4. Dustproof filter sponge; 5. Buffer and shock absorber; 6. Power supply battery; 7. Power supply harness. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0020] Reference Figures 1-3As shown, a novel RV fresh air and dehumidification system structure includes a circulating fan 1, a dust-proof duct 2, and an in-vehicle air circulation duct 3. An opening is provided in the RV floor sheet metal, and the circulating fan 1 is installed at this opening. The input end of the circulating fan 1 is connected to the in-vehicle air circulation duct 3 to draw air from the duct, and the output end is connected to the dust-proof duct 2 to exhaust air. The dust-proof duct 2 is located under the RV floor to exhaust humid air outside the vehicle. The in-vehicle air circulation duct 3 is located inside the RV and has multiple ventilation holes 31 to allow air from sealed areas inside the vehicle to enter the in-vehicle air circulation duct 3 and be exhausted by the circulating fan 1. When the circulating fan 1 is activated, it draws air from the duct through its connection with the in-vehicle air circulation duct 3. At this time, humid air accumulated in sealed areas such as the RV cabinets and under the floor due to daily use is drawn out through the in-vehicle air circulation duct. The air enters through the ventilation holes 31 on the air circulation duct 3 and is then drawn into the interior by the circulation fan 1 to the air guide dustproof duct 2. Finally, it is discharged outside the vehicle through the air guide dustproof duct 2 located under the floor, realizing air circulation between the vehicle interior and the vehicle floor. Through the guiding ability of the air circulation duct 3 and the air guide dustproof duct 2, the humid air that was originally stagnant in the sealed area of ​​the vehicle is directed to flow and discharged, thereby reducing the humidity in these areas and achieving the effect of dehumidification and mildew prevention. At the same time, when the circulation fan 1 discharges the humid air in the sealed area of ​​the vehicle through the air guide dustproof duct 2, a relative negative pressure will be formed inside the vehicle. Fresh air from outside will enter the open area of ​​the vehicle through the natural channels such as the sealing gaps of the RV doors and windows and the ventilation grille, and diffuse to various spaces through the natural air flow inside the vehicle. While expelling moisture, fresh air is replenished, which not only ensures the dehumidification effect, but also continuously injects fresh air into the vehicle, forming an air circulation and achieving the function of a fresh air system.

[0021] Among them, the circulating fan 1 can be a DC high-volume circulating fan, which can be adapted to the low-voltage power supply system commonly used in RVs. No additional conversion device is required. It can directly utilize the power supply battery 6 in the RV living area to efficiently obtain power and save energy conversion costs.

[0022] Reference Figure 3 As shown, a dust filter sponge 4 is further provided inside the air duct and dustproof duct 2. On the one hand, the sponge material has a certain degree of breathability and will not significantly hinder the discharge of humid air. On the other hand, it can effectively block dust, sand and other impurities from outside the vehicle from entering the vehicle through the duct in the opposite direction.

[0023] Reference Figure 3As shown, furthermore, a buffer damping component 5 is bonded to the outer periphery of the circulating fan 1, and the buffer damping component 5 is located between the circulating fan 1 and the floor sheet metal. The buffer damping component 5 can be made of a material that can provide cushioning, such as EV damping sponge, to absorb the vibration generated when the circulating fan 1 is working, and prevent the vibration from being directly transmitted to the floor sheet metal, thereby reducing the noise caused by vibration, creating a quieter in-vehicle environment, and reducing the hard friction and collision between the circulating fan 1 and the floor sheet metal, reducing component wear.

[0024] Reference Figure 1 As shown, the ventilation holes 31 of the in-vehicle air circulation duct 3 are distributed at intervals along its extension path to ensure that ventilation holes 31 are provided in all areas through which the in-vehicle air circulation duct 3 passes, whether on straight sections or at bends. This allows humid air from sealed areas in different locations inside the RV to enter the in-vehicle air circulation duct 3 through the nearest ventilation hole 31, avoiding the situation where moisture is difficult to expel in some areas due to the ventilation holes 31 being concentrated in a certain area, thus improving the overall comprehensiveness and uniformity of dehumidification.

[0025] Reference Figure 2 As shown, furthermore, since the airflow in front of the RV is relatively turbulent during the RV's operation, the output end of the air duct 2 is set to face the rear of the RV to conform to the airflow direction during driving, thus preventing external airflow or dust from flowing back into the air duct 2 and hindering the discharge of humid air.

[0026] It also includes a power supply battery 6 and a power supply harness 7. The power supply harness 7 connects the power supply battery 6 in the living area of ​​the RV to the circulating fan 1. The circulating fan 1 can directly obtain power from the existing power supply system of the RV without the need for additional power supply equipment. This is convenient, cost-effective, and ensures a stable power supply for the fan, allowing it to work normally to expel humid air.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A novel RV fresh air and dehumidification system structure, characterized in that, The system includes a circulating fan (1), a dust-proof duct (2), and an in-vehicle air circulation duct (3). The circulating fan (1) is installed at the through-hole of the RV floor sheet metal. Its input end is connected to the in-vehicle air circulation duct (3) to draw air from the in-vehicle air circulation duct (3), and its output end is connected to the dust-proof duct (2) to exhaust air. The dust-proof duct (2) is installed under the RV floor to exhaust humid air outside the vehicle. The in-vehicle air circulation duct (3) is arranged inside the RV, and multiple ventilation holes (31) are provided on the in-vehicle air circulation duct (3) to enable air in the sealed area inside the vehicle to enter the in-vehicle air circulation duct (3) and be exhausted through the circulating fan (1).

2. The structure of a novel RV fresh air and dehumidification system according to claim 1, characterized in that, The interior of the air-guiding and dust-proof duct (2) is equipped with a dust-proof filter sponge (4).

3. The structure of a novel RV fresh air and dehumidification system according to claim 1, characterized in that, The outer periphery of the circulating fan (1) is bonded with a buffer shock absorber (5), and the buffer shock absorber (5) is located between the circulating fan (1) and the through-hole of the floor sheet metal.

4. The structure of a novel RV fresh air and dehumidification system according to claim 1, characterized in that, The ventilation holes (31) of the in-vehicle air circulation duct (3) are distributed at intervals along its extension path.

5. The structure of a novel RV fresh air and dehumidification system according to claim 1, characterized in that, The output end of the air-guiding and dust-proof duct (2) faces the rear of the RV.

6. The structure of a novel RV fresh air and dehumidification system according to claim 1, characterized in that, It also includes a power supply battery (6) and a power supply harness (7), which are respectively connected to the power supply battery (6) of the RV living area and the circulating fan (1).