Mobile homestays that facilitate rainwater drainage

Abstract

This utility model discloses a mobile guesthouse designed for easy rainwater drainage, comprising a guesthouse body, a drainage trough, and a blowing component. The blowing component includes: an air source device and a pipeline structure; the pipeline structure includes a main air pipe, a first branch pipe group, and a second branch pipe group; at least one nozzle assembly, comprising a first nozzle and a second nozzle; the second nozzle includes a nozzle body with an airflow channel, a throat, and an expansion section communicating with the throat; the end of the nozzle body forms an air outlet, the airflow direction of which is set at an acute angle to the top surface of the guesthouse body, so as to blow the airflow accelerated by the expansion section toward the drainage trough and drive rainwater or impurities on the top surface to flow into the drainage trough; it also includes at least one valve for connecting or disconnecting the airflow from the air source device to the pipeline structure. This achieves proactive and rapid removal of debris and accumulated water from the top surface of the guesthouse and in the drainage trough, preventing blockage of the drainage trough caused by fallen leaves, mud, etc.

Description

Technical Field

[0001] This utility model relates to the field of mobile homestay technology, specifically a mobile homestay that facilitates rainwater drainage. Background Technology

[0002] Mobile homestays, as a new type of tourist accommodation and living space, are gaining popularity among consumers. They are typically located in scenic areas, resorts, or rural settings, providing users with a unique living experience.

[0003] However, because mobile homestays are constantly exposed to the outdoor environment, their roofs inevitably face the intrusion of rainwater, fallen leaves, dust, bird droppings, and other debris. Most mobile homestays feature flat or low-slope roofs. This type of roof structure is inherently unfavorable for rapid rainwater drainage, easily leading to water accumulation. Water accumulation not only increases the structural load on the roof, but prolonged soaking can also damage the waterproofing layer, causing leaks and affecting the structural safety and lifespan of the homestay. Furthermore, specific drainage channels must be installed on the roof; otherwise, rainwater mixed with stains and debris will slide down the side walls, creating stains over time and affecting the aesthetics.

[0004] To address drainage issues, existing mobile homestays typically incorporate traditional drainage channels along the roof's edge, relying on gravity to collect and drain rainwater. However, this passive, gravity-driven drainage method has several drawbacks. First, wind-blown debris such as leaves and dust easily accumulates in the drainage channels, especially near the drain outlets, causing blockages. Once blocked, rainwater overflows the channels, flowing haphazardly onto the walls, eroding the wall materials and causing pollution and damage. Second, stagnant water in blocked channels becomes a breeding ground for mosquitoes, compromising the hygiene of the living environment.

[0005] Therefore, this application is submitted. Utility Model Content

[0006] To address the problems existing in the prior art, the purpose of this utility model is to provide a mobile homestay with convenient rainwater drainage, solving the problem that existing mobile homestays typically have traditional drainage channels installed along the edge of the roof, relying on gravity to guide rainwater to collect and drain. However, this passive drainage method relying on gravity has certain drawbacks. First, wind-blown leaves, dust, and other debris easily accumulate in the drainage channels, especially near the drain outlets, causing blockages. Once the drainage channels are blocked, rainwater overflows over the edges, flowing haphazardly onto the walls of the homestay, eroding the wall materials and causing pollution and damage. Second, water accumulating in the blocked drainage channels for extended periods becomes a breeding ground for mosquitoes, affecting the hygiene of the living environment.

[0007] To address the aforementioned problems, this application proposes a mobile guesthouse designed for easy rainwater drainage, comprising a guesthouse body with drainage channels around its top edge; and a blowing component comprising:

[0008] A gas source device for generating and storing high-pressure gas; the gas source device includes an air compressor for generating compressed air and a gas storage tank for stabilizing gas pressure and providing instantaneous large flow rates of gas.

[0009] The pipeline structure includes a main air pipe, a first branch pipe group spaced apart along the length of the main air pipe, and a second branch pipe group connected to the first branch pipe group; the second branch pipe group is located above the drainage trough.

[0010] At least one nozzle assembly, the nozzle assembly including a first nozzle disposed on the first branch pipe assembly and a second nozzle disposed on the second branch pipe assembly;

[0011] The second nozzle includes a nozzle body, and an airflow channel extending along its central axis is provided inside the nozzle body;

[0012] The nozzle body is provided with a throat and an expansion section communicating with the throat in sequence.

[0013] The nozzle body has an air outlet at its end. The air outlet is set at an acute angle to the top surface of the guesthouse body so as to blow the airflow accelerated by the expansion section toward the drainage trough and drive the rainwater or impurities on the top surface to flow toward the drainage trough.

[0014] It also includes at least one valve for connecting or disconnecting the gas path from the gas source device to the pipeline structure.

[0015] Preferably, the drainage channel includes a longitudinal drainage channel and a transverse drainage channel;

[0016] The bottom of the transverse drainage channel has a slope that is inclined toward the outlet.

[0017] The bottom of the longitudinal drainage channel is high in the middle and slopes downwards along both sides.

[0018] Preferably, the first nozzle includes an outer tube nozzle and an inner tube nozzle with a rectangular flat cross-section; the inner tube nozzle is connected to the outer tube nozzle via two connecting posts.

[0019] Preferably, the second nozzles are arranged in an array at a predetermined interval along the length of the drainage channel.

[0020] Preferably, the air source device is housed in a protective box with ventilation and heat dissipation vents, and the protective box is fixed to the main body of the guesthouse.

[0021] Preferably, the throat is the smallest cross-sectional portion of the airflow channel.

[0022] Preferably, the angle between the air outlet direction and the top surface is 30°-45°.

[0023] Preferably, the expansion section is a conical channel with a cross-sectional area that gradually increases from the throat along the airflow direction.

[0024] In summary, this utility model has the following beneficial effects: When drainage or cleaning is required, valve 4 can be opened by a manual switch, timer controller, or rain sensor. The high-pressure gas stored in the gas tank, under the action of pressure difference, is transported to the nozzle assembly 33 through the main gas pipe 321, the first branch pipe group 322, and the second branch pipe group 323. The first nozzle 331 generates airflow to sweep the top surface of the guesthouse body 1 over a wide area, pushing most of the rainwater and loose impurities towards the surrounding drainage trough 2. Simultaneously, the second nozzle 332 generates focused high-speed airflow, forcefully sweeping the drainage trough 2 and its surrounding area at a preset acute angle, blowing the accumulated water and debris in the trough along the path of the drainage trough towards the outlet and discharging it. It can be understood that the high-pressure gas starts from the gas tank, flows through the pipeline structure 32, and enters the airflow channel 3321a of the second nozzle 332. According to Bernoulli's principle, when the cross-sectional area of ​​the channel decreases, the airflow velocity increases, while its static pressure and temperature decrease. When the airflow reaches the throat 3321b, the cross-sectional area reaches its minimum. The velocity of the airflow at the throat 3321b is used to create a local high-pressure, low-velocity flow. As the airflow enters the expansion section 3321c, whose cross-sectional area gradually increases, the airflow expands within the expansion section 3321c, and its internal energy and pressure energy are continuously converted into kinetic energy, thus forming a high-speed airflow at the outlet 3321d. Through the above working principle, the airflow accelerated by the expansion section 3321c can form a high-speed airflow and generate strong kinetic energy. When the high-speed airflow impacts the drainage trough 2 at an acute angle of 30°-45°, the high momentum can generate a strong impact force, which can effectively peel off and blow away stubborn impurities such as wet leaves, bird droppings, and mud adhering to the surface. The peeled impurities are driven into the drainage trough 2 and push the existing water and sediment in the drainage trough to flow at high speed along the trough towards the outlet.

[0025] The aforementioned structural design enables proactive, rapid, and powerful removal of debris and accumulated water from the roof and drainage channels of the guesthouse. Compared to traditional passive gravity drainage, this solution utilizes high-pressure airflow to improve drainage and cleaning efficiency. It promptly removes debris, effectively preventing drainage channel blockages caused by fallen leaves, silt, etc. This avoids rainwater overflow and backflow caused by blockages, as well as soaking and erosion of the guesthouse's walls and structure. Attached Figure Description

[0026] Figure 1 A first-angle three-dimensional structural diagram of a mobile homestay designed to facilitate rainwater drainage;

[0027] Figure 2 A second-angle three-dimensional structural diagram of a mobile homestay designed to facilitate rainwater drainage;

[0028] Figure 3 This is an enlarged structural diagram of point A;

[0029] Figure 4 A three-dimensional structural diagram of the purging component;

[0030] Figure 5 This is a cross-sectional view of the first nozzle;

[0031] Figure 6 This is a cross-sectional schematic diagram of the second nozzle. Detailed Implementation

[0032] 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.

[0033] See Figure 1-6 A mobile homestay designed for easy rainwater drainage includes a homestay body 1, with drainage channels 2 around the top edge of the homestay body 1; it also includes a blowing component 3, which includes:

[0034] Gas source device 31 is used to generate and store high-pressure gas; gas source device 31 includes an air compressor 311 for generating compressed air and a gas storage tank for stabilizing gas pressure and providing instantaneous large flow of gas.

[0035] Pipeline structure 32 includes a main air pipe 321, a first branch pipe group 322 spaced along the length of the main air pipe 321, and a second branch pipe group 323 connected to the first branch pipe group 322; the second branch pipe group 323 is located above the drainage trough 2.

[0036] At least one nozzle assembly 33, the nozzle assembly 33 including a first nozzle 331 disposed on a first branch pipe assembly 322 and a second nozzle 332 disposed on a second branch pipe assembly 323;

[0037] The second nozzle 332 includes a nozzle body 3321, and an airflow channel 3321a extending along its central axis is provided inside the nozzle body 3321.

[0038] The nozzle body 3321 is provided with a throat 3321b and an expansion section 3321c communicating with the throat 3321b in sequence.

[0039] The nozzle body 3321 has an air outlet 3321d at the end. The air outlet 3321d is set at an acute angle to the top surface of the guesthouse body 1 so as to blow the airflow accelerated by the expansion section 3321c toward the drainage trough 2 and drive the rainwater or impurities on the top surface to flow toward the drainage trough 2.

[0040] It also includes at least one valve 4, which is used to connect or disconnect the gas path from the gas source device 31 to the pipeline structure 32.

[0041] The main structure 1 of the mobile homestay serves as the primary load-bearing structure, while the drainage trough 2 collects the gas initially. The purging component 3 primarily consists of an air source device 31, a piping structure 32, and at least one nozzle assembly 33. The air source device 31 acts as a power source, generating and stably supplying high-pressure gas. It integrates an air compressor 311 for generating compressed air and an air tank for stabilizing output pressure and providing a large flow of impact gas instantaneously. This combination ensures that the implementation can provide cleaning power at any time. The air source device 31 is connected to the main air pipe 321 of the piping structure 32 via a valve 4 with overall control. The valve 4 is used to connect or disconnect the air path from the air source device 31 to the entire piping structure 32. High-pressure gas enters through the main air pipe 321, is then distributed to the first branch pipe group 322 and the second branch pipe group 323, and finally exits through their respective first nozzles 331 and second nozzles 332. When it is necessary to clean water, fallen leaves, or other debris from the roof, the operator opens the valve 4. Under the influence of pressure difference, the high-pressure gas stored in the gas tank instantly rushes into the main gas pipe 321 through valve 4 and is quickly distributed to the first branch pipe group 322 and the second branch pipe group 323 connected to it. The second nozzle 332 located above the drainage trough 2 ejects a high-speed airflow. Its outlet direction is designed to form an acute angle with the top surface of the guesthouse body 1. The high-speed airflow blows against the top surface with tangential force, which can efficiently drive the rainwater or impurities on the top surface, causing them to flow in a designated direction and flow into the drainage trough 2. At the same time, the first nozzle 331 located on the first branch pipe group 322 also starts to work. The airflow it ejects directly acts on the inside of the drainage trough 2, sweeping the impurities that have just flowed in from the top surface and those that were previously accumulated along the path of the drainage trough to the designated drain outlet, completing the dredging task.

[0042] More specifically, when drainage or cleaning is required, valve 4 can be opened via a manual switch, timer controller, or rain sensor. The high-pressure gas stored in the gas tank, under pressure differential, is transported to the nozzle assembly 33 through the main air pipe 321 and the first branch pipe group 322 and the second branch pipe group 323. The first nozzle 331 generates airflow to sweep the top surface of the guesthouse body 1 over a wide area, pushing most of the rainwater and loose impurities towards the surrounding drainage troughs 2. Simultaneously, the second nozzle 332 generates focused high-speed airflow, forcefully sweeping the drainage troughs 2 and their surrounding area at a preset acute angle, blowing accumulated water and debris along the path of the drainage troughs towards the outlet and discharging them. It can be understood that the high-pressure gas originates from the gas tank, flows through the pipe structure 32, and enters the airflow channel 3321a of the second nozzle 332. According to Bernoulli's principle, when the cross-sectional area of ​​the channel decreases, the airflow velocity increases, while its static pressure and temperature decrease. When the airflow reaches the throat 3321b, the cross-sectional area reaches its minimum. The velocity of the airflow at the throat 3321b is used to create a localized high-pressure, low-velocity flow. As the airflow enters the expansion section 3321c, whose cross-sectional area gradually increases, it expands within the expansion section 3321c, continuously converting its internal and pressure energy into kinetic energy, thus forming a high-speed airflow at the outlet 3321d. Based on this working principle, the airflow accelerated by the expansion section 3321c can form a high-speed airflow and generate strong kinetic energy. When the high-speed airflow impacts the drainage trough 2 at an acute angle of 30°-45°, the high momentum generates a powerful impact force, effectively stripping and blowing away stubborn impurities such as wet leaves, bird droppings, and mud adhering to the surface. The stripped impurities are driven into the drainage trough 2, pushing the existing accumulated water and sediment in the drainage trough along the trough towards the outlet at high speed.

[0043] The aforementioned structural design enables proactive, rapid, and powerful removal of debris and accumulated water from the roof and drainage channels of the guesthouse. Compared to traditional passive gravity drainage, this solution utilizes high-pressure airflow to significantly improve drainage and cleaning efficiency. It promptly removes debris, effectively preventing drainage channel blockages caused by fallen leaves, silt, etc. This avoids rainwater overflow and backflow due to blockages, as well as waterlogging and erosion of the guesthouse's walls and structure. This not only enhances the guesthouse's reliability and safety in inclement weather but also eliminates the dangers and tediousness of manual cleaning, thereby improving the user experience, the overall value of the guesthouse, and extending its lifespan.

[0044] Preferably, the drainage channel 2 includes a longitudinal drainage channel 21 and a transverse drainage channel 22;

[0045] The bottom of the transverse drainage channel 22 has a slope that is inclined toward the outlet;

[0046] The bottom of the longitudinal drainage channel 21 is high in the middle and slopes downwards along both sides.

[0047] Specifically, the slope structure utilizes gravitational potential energy to assist drainage. This structure not only improves the efficiency of passive drainage when the purging component 3 is not activated, but more importantly, during active purging, the slope provides a smooth guiding path for impurities and water flow driven by the airflow, reducing resistance and thus reducing system energy consumption. It also ensures that impurities do not remain on the flat bottom of the tank, improving the thoroughness of cleaning.

[0048] Understandably, the slope of the transverse drainage channel 22 towards the outlet has a gravitational potential energy gradient. In passive mode (i.e., when the second nozzle 332 is not activated), gravity alone can guide the collected rainwater to flow naturally towards the final outlet, effectively avoiding water accumulation and sedimentation problems caused by a flat bottom. In active mode, when the airflow from the second nozzle 332 propels water and impurities at high speed along the channel, the frictional resistance and potential barrier that the airflow needs to overcome are smaller, thereby reducing the system's minimum requirements for air pressure and flow rate.

[0049] The V-shaped or arc-shaped bottom structure of the longitudinal drainage channel 21, which is higher in the middle and lower on both sides, ensures that rainwater, regardless of its flow rate, is naturally guided and collected at the lowest point in the center of the channel, forming a concentrated water flow rather than a dispersed shallow flow. When the first nozzle 331 blows along this channel bottom, the V-shaped structure acts as a guide and constraint, preventing the disorderly dissipation of the blowing airflow energy (e.g., splashing upwards or to the sides). This forces the airflow, the propelled water flow, and impurities to remain on a concentrated path, converting aerodynamic energy into maximized linear thrust.

[0050] Therefore, the V-shaped or arc-shaped bottom structure of the longitudinal drainage channel 21, which is high in the middle and low on both sides, can maximize the flushing and pushing efficiency of the airflow on impurities, so that even with a limited air source, it can generate a strong local unblocking ability.

[0051] It should be noted that both the first nozzle 331 and the second nozzle 332 can be connected to each other in the pipeline structure 32 by welding.

[0052] Preferably, the first nozzle 331 includes an outer tube nozzle 3311 and an inner tube nozzle 3312 with a rectangular flat cross-section; the inner tube nozzle 3312 is connected to the outer tube nozzle 3311 through two connecting posts 5.

[0053] Specifically, the inner nozzle 3312 features a rectangular, flat cross-section design, with its length matching that of the outer nozzle 3311, ensuring that the airflow from the first nozzle 331 is sheet-like. This creates a curtain-like effect, allowing the sheet-like airflow to better adhere to the ceiling and the bottom and sidewalls of the longitudinal drainage channel 21. Furthermore, the first nozzles 331 are symmetrically arranged along the pipeline, enabling a large-area coverage sweep in one pass. Compared to traditional circular nozzles, this covers a wider working area, allowing for more efficient sweeping of the flat ceiling of the guesthouse. It pushes large areas of rainwater, fallen leaves, dust, and other impurities evenly towards the drainage channel in one go, improving the efficiency and scope of initial cleaning. This results in higher cleaning efficiency and fewer blind spots. This structural design enhances the cleaning effect on the ceiling and inside the longitudinal drainage channel 21, ensuring unobstructed drainage throughout the entire process.

[0054] Preferably, the second nozzles 332 are arranged in an array at a preset interval along the length of the drainage channel 2. Specifically, the array arrangement ensures that the cleaning airflow can be applied evenly to each section from the beginning to the end of the drainage channel 2, avoiding the problem of airflow attenuation at the front end and the inability to discharge impurities at the rear end due to excessive distance, thus ensuring the cleaning consistency and reliability of the entire system.

[0055] Furthermore, the ceiling area of ​​the guesthouse is relatively large, and the airflow coverage and effective distance of a single second nozzle 332 are limited, with airflow energy attenuating with increasing distance. Adopting an array-style distribution ensures that the airflow evenly covers the entire area to be cleaned. This means that every section from the beginning to the end of the drain trough 2 receives effective cleaning from the nozzles, ensuring that the cleaning airflow acts evenly on every corner of the guesthouse ceiling, avoiding the problem of airflow attenuation at the front end preventing impurities from being effectively driven to the drain trough at the back end.

[0056] Preferably, the air source device 31 is housed in a protective enclosure with ventilation vents, and the protective enclosure is fixed to the main body 1 of the guesthouse. Specifically, the above-mentioned configuration improves the durability and operational stability of the entire system. The protective enclosure protects the core air compressor and air tank from wind and rain erosion and external impacts, while the ventilation vents ensure good heat dissipation of the compressor during long-term operation, preventing it from being damaged or having reduced efficiency due to overheating, ultimately extending the service life of the entire system.

[0057] Preferably, the throat 3321b is the smallest cross-sectional portion of the airflow channel 3321a. More specifically, when the airflow reaches the throat 3321b through the constriction channel, its velocity increases, further accelerating the airflow in the subsequent expansion section 3321c.

[0058] Preferably, the angle between the air outlet 3321d and the top surface is 30°-45°. In specific implementations, the angle can be specifically set to 30°, 35°, or 45°. If the angle is less than 30°, the airflow direction is too parallel to the top surface and the bottom of the trough, resulting in insufficient force for peeling and prying off strongly adhered or heavy deposits such as wet leaves and silt. If the angle is greater than 45°, the vertical component of the airflow is too large, which will waste energy and may cause water and dirt to splash upwards, thus reducing the effective horizontal thrust for pushing impurities along the drainage trough. Therefore, an angle of 30°-45° can achieve a better cleaning effect by balancing effective peeling force and efficient horizontal thrust.

[0059] Preferably, the expansion section 3321c is a conical channel with a gradually increasing cross-sectional area from the throat 3321b along the airflow direction. According to the principles of fluid mechanics, when the airflow enters the channel with a gradually increasing cross-sectional area, the airflow expands, and its internal energy and pressure energy are efficiently converted into kinetic energy, thereby increasing the airflow velocity. When the resulting high-speed airflow is ejected, the resulting impact force can exert a powerful flushing and blowing effect on stubborn impurities and accumulated water in the drainage ditch, ensuring effective unblocking even in the face of severe blockages.

[0060] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A mobile guesthouse designed for easy rainwater drainage, comprising a guesthouse body, wherein drainage channels are provided around the top edge of the guesthouse body; characterized in that, It also includes a purging component, which comprises: A gas source device for generating and storing high-pressure gas; the gas source device includes an air compressor for generating compressed air and a gas storage tank for stabilizing gas pressure and providing instantaneous large flow rates of gas. The pipeline structure includes a main air pipe, a first branch pipe group spaced apart along the length of the main air pipe, and a second branch pipe group connected to the first branch pipe group; the second branch pipe group is located above the drainage trough. At least one nozzle assembly, the nozzle assembly including a first nozzle disposed on the first branch pipe assembly and a second nozzle disposed on the second branch pipe assembly; The second nozzle includes a nozzle body, and an airflow channel extending along its central axis is provided inside the nozzle body; The nozzle body is provided with a throat and an expansion section communicating with the throat in sequence. The nozzle body has an air outlet at its end. The air outlet is set at an acute angle to the top surface of the guesthouse body so as to blow the airflow accelerated by the expansion section toward the drainage trough and drive the rainwater or impurities on the top surface to flow toward the drainage trough. It also includes at least one valve for connecting or disconnecting the gas path from the gas source device to the pipeline structure.

2. The mobile homestay with convenient rainwater drainage according to claim 1, characterized in that, The drainage channel includes a longitudinal drainage channel and a transverse drainage channel; The bottom of the transverse drainage channel has a slope that is inclined toward the outlet. The bottom of the longitudinal drainage channel is high in the middle and slopes downwards along both sides.

3. The mobile homestay with convenient rainwater drainage according to claim 1, characterized in that, The first nozzle includes an outer tube nozzle and an inner tube nozzle with a rectangular flat cross-section; the inner tube nozzle is connected to the outer tube nozzle through two connecting posts.

4. The mobile homestay with convenient rainwater drainage according to claim 1 or 2, characterized in that, The second nozzles are arranged in an array at a predetermined spacing along the length of the drainage channel.

5. The mobile homestay with convenient rainwater drainage according to claim 1, characterized in that, The air source device is housed in a protective box with ventilation and heat dissipation vents, and the protective box is fixed to the main body of the guesthouse.

6. The mobile homestay with convenient rainwater drainage according to claim 1, characterized in that, The throat is the smallest cross-sectional portion of the airflow channel.

7. The mobile homestay with convenient rainwater drainage according to claim 1, characterized in that, The angle between the air outlet's outlet direction and the top surface is 30°-45°.

8. The mobile homestay with convenient rainwater drainage according to claim 1, characterized in that, The expansion section is a conical channel whose cross-sectional area gradually increases from the throat along the airflow direction.

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