Casement window drainage system with multi-stage anti-backflow function

Abstract

The utility model discloses a casement window drainage system with a multi-stage anti-backflow function. The casement window drainage system comprises a bottom sill, a drainage profile, a first drainage cavity, a second drainage cavity, a flow guide plate and a multi-stage anti-backflow assembly. Rainwater is rapidly guided through a communicating structure of the first drainage cavity and the second drainage cavity, the multi-stage anti-backflow assembly comprises an inner-layer wind shielding cover and an outer-layer splash-proof cover, and the drainage smoothness and the anti-backflow effect are further enhanced. The window has the characteristics of wind pressure resistance, corrosion resistance and high drainage efficiency, and is suitable for building doors and windows in coastal and rainy areas.

Description

Technical Field

[0001] The utility model belongs to the technical field of doors and windows, and more specifically relates to a drainage system for casement windows with a multi-stage backflow prevention function. Background Art

[0002] The door and window drainage system is an important part of the door and window structure of a building. It is especially important to prevent rainwater backflow and water accumulation in coastal areas and environments with frequent rainstorms.

[0003] Chinese patent CN201821555926.7 proposes a casement window drainage system and casement window, which includes a sill, drainage profiles, deflectors, and windshields, and can alleviate the problems of rainwater backflow and water accumulation to a certain extent. However, it has the following shortcomings:

[0004] The single-layer windshield design cannot completely prevent rainwater from flowing back under high wind pressure conditions;

[0005] The matching between the drainage cavity and the drainage hole is poor, resulting in insufficient drainage efficiency;

[0006] Lack of modular design makes it difficult to disassemble, clean and maintain.

[0007] In response to the above problems, the utility model proposes a casement window drainage system with a multi-level anti-backflow function, which significantly improves drainage efficiency and anti-backflow performance through multi-level protection design and optimized drainage path. Utility Model Content

[0008] The purpose of the present invention is to provide a method for solving the problems raised in the above background technology.

[0009] To achieve the above objectives, the present invention provides the following technical solutions:

[0010] A casement window drainage system with a multi-stage backflow prevention function, comprising a sill, a drainage profile, a first drainage cavity, a second drainage cavity, a guide plate, and a multi-stage backflow prevention component;

[0011] The first drainage cavity is arranged inside the bottom sill, and the second drainage cavity is arranged inside the drainage profile (2), and the first drainage cavity and the second drainage cavity are connected through the water inlet hole;

[0012] The deflector is arranged in the second drainage cavity and is inclined, with the inclined surface facing the outdoor side;

[0013] The multi-stage backflow prevention component includes an inner wind shield and an outer splash shield. The inner wind shield covers the drainage hole, and the outer splash shield is spaced apart from the drainage hole to form a pressure relief chamber.

[0014] Preferably, the inner windshield cover is an arc-shaped structure, a drainage outlet is provided at the lower portion thereof, and the lower edge of the drainage outlet is lower than the lower edge of the drainage hole.

[0015] Preferably, a buffer channel is provided at the lower portion of the outer splash shield, and the buffer channel is connected to the pressure relief chamber for reducing wind pressure.

[0016] Preferably, the inclination angle of the guide plate is 15° to 45°, which is used to accelerate the discharge of rainwater.

[0017] Preferably, the sill and the drainage profile are connected by a snap-fit ​​structure, which facilitates disassembly and cleaning.

[0018] Preferably, the first drainage cavity and the second drainage cavity are both made of corrosion-resistant materials to extend their service life.

[0019] Preferably, the drainage hole is elliptical in shape, with a transverse dimension larger than a longitudinal dimension, so as to reduce water flow resistance.

[0020] Preferably, the cross-sectional area of ​​the pressure relief cavity is larger than the opening area of ​​the drainage hole, so as to further reduce the influence of wind pressure on drainage.

[0021] Preferably, the inner windshield cover is installed by a detachable buckle, which is convenient for regular replacement or cleaning.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. This casement window drainage system with multi-level backflow prevention function adopts a multi-level backflow prevention design, adds a double-layer protection structure of an inner wind shield and an outer splash shield, and combines a pressure relief cavity and a buffer channel to effectively disperse wind pressure, significantly improving the rainwater backflow prevention capability in high wind pressure environments. It is suitable for coastal areas and complex climatic conditions with frequent rainstorms.

[0024] 2. This casement window drainage system features a multi-stage backflow prevention system. By optimizing the inclination angle of the deflector, rainwater is quickly drained along the slope, reducing water accumulation and corrosion. Furthermore, the modular and removable design of the sill and drainage profile facilitates cleaning and maintenance, extending the system's service life and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of a casement window drainage system with a multi-stage anti-backflow function according to the present invention;

[0026] Figure 2 It is a cross-sectional view of the first drainage cavity and the second drainage cavity described in the utility model;

[0027] Figure 3It is a structural schematic diagram of the guide plate described in the utility model;

[0028] Figure 4 This is a schematic diagram of the installation of the inner windshield cover and the drainage hole described in the utility model;

[0029] Figure 5 This is a schematic cross-sectional view of the outer splash shield described in the utility model.

[0030] In the figure: 1. Bottom sill; 2. Drainage profile; 3. First drainage cavity; 4. Second drainage cavity; 5. Guide plate; 6. Water inlet; 7. Inner wind shield; 8. Outer splash guard; 9. Drainage hole; 10. Drain outlet; 11. Buffer channel. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] See also Figure 1-Figure 5 As shown, the utility model provides a technical solution:

[0033] A casement window drainage system with a multi-stage backflow prevention function, comprising a sill, a drainage profile, a first drainage cavity, a second drainage cavity, a guide plate, and a multi-stage backflow prevention component;

[0034] The first drainage cavity is arranged inside the bottom sill, and the second drainage cavity is arranged inside the drainage profile (2), and the first drainage cavity and the second drainage cavity are connected through the water inlet hole;

[0035] The deflector is arranged in the second drainage cavity and is inclined, with the inclined surface facing the outdoor side;

[0036] The multi-stage backflow prevention component includes an inner wind shield and an outer splash shield. The inner wind shield covers the drainage hole, and the outer splash shield is spaced apart from the drainage hole to form a pressure relief chamber.

[0037] Example 1

[0038] like Figure 1 and Figure 2 As shown, the utility model comprises a bottom sill (1), a drainage profile (2), a first drainage cavity (3), a second drainage cavity (4), a guide plate (5), an inner windshield cover (7) and an outer splash shield (8).

[0039] The first drainage cavity (3) is located inside the sill (1), and the second drainage cavity (4) is arranged inside the drainage profile (2). The two are connected through the water inlet hole (6). Rainwater enters the first drainage cavity (3) from the lower part of the window frame, flows into the second drainage cavity (4) through the water inlet hole (6), and is then guided and discharged to the outside through the guide plate (5).

[0040] Example 2

[0041] like Figure 3 As shown, the guide plate (5) is arranged inside the second drainage cavity (4) with an inclination angle of 30 degrees. After rainwater enters from the water inlet hole (6), it is quickly discharged to the drainage hole (9) along the inclined surface of the guide plate (5). The guide plate (5) is made of corrosion-resistant material, which can avoid corrosion problems caused by long-term water accumulation, and effectively reduce rainwater retention and improve drainage efficiency.

[0042] Example 3

[0043] like Figure 4 As shown, the inner windshield cover (7) is an arc-shaped structure, which is snap-fitted with the drainage hole (9) and has a drainage outlet (10) at the bottom. When the wind pressure is high, the windshield cover (7) can effectively reduce the possibility of rainwater backflow, and at the same time, the edge of the drainage outlet (10) is lower than the edge of the drainage hole (9), so that rainwater can be quickly discharged under the action of gravity.

[0044] Example 4

[0045] like Figure 5 As shown, a pressure relief chamber is formed between the outer splash shield (8) and the drainage hole (9), and the pressure relief chamber is connected to the outside through a buffer channel (11). When strong wind acts on the drainage hole (9), the pressure relief chamber and the buffer channel (11) can disperse the wind pressure, reduce the obstruction of the wind on the discharge of rainwater, and further prevent rainwater from flowing back.

[0046] Example 5

[0047] The bottom sill (1) and the drainage profile (2) of the utility model are connected by a detachable buckle, and the user can remove the drainage profile (2) for cleaning or maintenance when necessary. For example, in a coastal environment with a lot of salt fog, the contact between the drainage profile (2) and the bottom sill (1) is coated with an anti-corrosion coating to extend the service life of the system.

[0048] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A casement window drainage system with multi-stage backflow prevention function, characterized by: It comprises a sill (1), a drainage profile (2), a first drainage cavity (3), a second drainage cavity (4), a guide plate (5) and a multi-stage backflow prevention component; The first drainage cavity (3) is arranged inside the bottom sill (1), and the second drainage cavity (4) is arranged inside the drainage profile (2). The first drainage cavity (3) and the second drainage cavity (4) are connected through the water inlet hole (6); The guide plate (5) is arranged in the second drainage cavity (4) and is inclined, with the inclined surface facing the outdoor side; The multi-stage backflow prevention assembly comprises an inner windshield cover (7) and an outer splash shield (8), wherein the inner windshield cover (7) covers the drainage hole (9), and the outer splash shield (8) is spaced apart from the drainage hole (9) to form a pressure relief chamber.

2. The casement window drainage system with multi-stage backflow prevention function according to claim 1 is characterized in that: The inner windshield cover (7) is an arc-shaped structure, and a drainage port (10) is provided at its lower portion, wherein the lower edge of the drainage port (10) is lower than the lower edge of the drainage hole (9).

3. The casement window drainage system with multi-stage backflow prevention function according to claim 1 is characterized in that: A buffer channel (11) is provided at the lower portion of the outer splash shield (8), and the buffer channel (11) is connected to the pressure relief chamber for reducing wind pressure.

4. The casement window drainage system with multi-stage backflow prevention function according to claim 1 is characterized in that: The guide plate (5) has an inclination angle of 15° to 45°, and is used to accelerate the drainage of rainwater.

5. The casement window drainage system with multi-stage backflow prevention function according to claim 1 is characterized in that: The sill (1) and the drainage profile (2) are connected via a snap-fit ​​structure, making them easy to disassemble and clean.

6. The casement window drainage system with multi-stage backflow prevention function according to claim 1 is characterized in that: The first drainage cavity (3) and the second drainage cavity (4) are both made of corrosion-resistant materials to extend their service life.

7. The casement window drainage system with multi-stage backflow prevention function according to claim 1 is characterized in that: The drainage hole (9) is elliptical in shape, with a transverse dimension larger than a longitudinal dimension, and is used to reduce water flow resistance.

8. The casement window drainage system with multi-stage backflow prevention function according to claim 1 is characterized in that: The cross-sectional area of ​​the pressure relief cavity is larger than the opening area of ​​the drainage hole (9), so as to further reduce the influence of wind pressure on drainage.

9. The casement window drainage system with multi-stage backflow prevention function according to claim 1 is characterized in that: The inner windshield cover (7) is installed via a detachable buckle, which is convenient for regular replacement or cleaning.

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