Invisible household anti-mosquito air curtain machine

Abstract

The utility model discloses an invisible household anti-mosquito air curtain machine, which comprises an air chamber shell, an air outlet nozzle, a fan and an inclined air jet hole which form an air curtain machine main body, the fan adopts a small high-speed turbine fan and is used for conveying high-pressure air into the air chamber, and the high-pressure air in the air chamber is jetted out at a high speed through the air outlet nozzle to form an air curtain; the air chamber shell can be installed on the left side or the right side of the door frame so that an anti-mosquito air curtain can be formed in the inner area of the door frame. The appearance of the air curtain machine body is a slender cuboid, the air curtain machine body has appearance characteristics similar to those of a door frame and a door stop of a common anti-theft door or an entrance door, the air curtain machine body can be conveniently installed on the left side or the right side of the door frame, and the passing width of the door cannot be obviously reduced; a user does not obviously feel the existence of the air curtain machine and is almost invisible. The device can provide enough air volume and air speed, and can effectively prevent mosquitoes from entering.

Description

Technical Field

[0001] This utility model relates to a household air curtain machine, specifically an invisible household mosquito-proof air curtain machine. Background Technology

[0002] Currently, homes are plagued by mosquitoes in the summer. To prevent or reduce this problem, screens are installed on windows to block mosquitoes from entering while ensuring ventilation. People don't need to use windows for normal daily life and work, making screens a simple and practical way to keep mosquitoes out. However, people frequently enter and exit through front doors. Even with screens, the constant opening and closing of the screen door allows mosquitoes to potentially enter the room.

[0003] An effective solution to this problem is an air curtain machine. Installed above or to the side of the entrance door, the air curtain emits a high-speed airflow, creating an air curtain within the door's area. When mosquitoes fly towards the air curtain, they sense the sudden change in airflow and instinctively turn back to escape the high-speed airflow zone, thus preventing them from entering the room. Furthermore, the high-speed airflow does not obstruct people's entry and exit, and does not affect the door's passageway function.

[0004] Currently, commercial air curtains using centrifugal impellers or flow fans are widely used in shops and public places. However, due to their large size, many homes lack the space above their entrance doors for installation. Even where space exists, the air curtains often appear out of place and unsightly. Furthermore, it's widely recognized that these are commercial air curtains, not residential ones, and therefore unsuitable for home use. Consequently, a suitable air curtain for home use is needed. Utility Model Content

[0005] To address the shortcomings of the existing technology, this utility model provides an invisible household mosquito-proof air curtain machine. This application significantly reduces the size of the air curtain machine, especially the cross-sectional size, so that it can be easily installed at the entrance door of a residence. It has similar shape features and a similar but slightly smaller cross-sectional size to the door stop, thus creating an invisible effect. It does not affect the passage function and aesthetics of the door, while providing sufficient air volume and wind speed to effectively prevent mosquitoes from entering.

[0006] To achieve the above technical objectives, this utility model adopts the following technical solution: an invisible household mosquito-proof air curtain machine, comprising an air chamber shell constituting the main body of the air curtain machine, the air chamber shell being hollow to form an air chamber, a plurality of air outlet nozzles communicating with the air chamber being opened on the side of the air chamber shell, the first end of the air chamber shell being open and equipped with a fan, the fan being a small high-speed turbine fan used to deliver high-pressure air into the air chamber, a plurality of oblique jet nozzles communicating with the air chamber being provided at the second end of the air chamber shell, the high-pressure air in the air chamber being ejected at high speed through the oblique jet nozzles and the air outlet nozzles to form an air curtain; the air chamber shell can be installed on the left or right side of a door frame so that a mosquito-proof air curtain is formed in the area inside the door frame.

[0007] The cross-sectional dimensions of the air chamber shell are no greater than 3.6cm x 3.6cm to achieve concealed installation.

[0008] The multiple inclined jet nozzles have different diameters and installation angles, and the length-to-diameter ratio of the inclined jet nozzles is greater than 1.5. The multiple inclined jet nozzles are arranged in a fan shape so that the high-pressure air is ejected through the inclined jet nozzles to form a fan-shaped auxiliary air curtain to adapt to door frames of different heights.

[0009] The air outlet nozzle is a guide nozzle. The guide nozzle adopts an integral molding structure with the air chamber shell or an embedded installation structure. The length-to-diameter ratio of the guide nozzle is greater than 1.5, so that the high-pressure air is ejected through the guide nozzle to form the main air curtain.

[0010] An air inlet end cover is provided at the first end opening of the air chamber housing. The air inlet end cover is a sleeve type and is embedded in the first end opening. An external folding lug is provided at the outer end of the air inlet end cover, and the external folding lug is engaged with the outer edge of the first end opening.

[0011] An air intake filter is installed on the inner end of the air intake end cover, and a vibration damping sleeve is also provided on the inner wall of the first end opening. The vibration damping sleeve is a sleeve type and is located between the air intake filter and the first air outlet nozzle.

[0012] A control switch is also provided at the second end of the air chamber housing, which is used to control the air curtain machine to work or stop.

[0013] In summary, this utility model achieves the following technical effects:

[0014] This application uses a small high-speed turbine fan as the air source and a slender metal or non-metal square tube or irregular tube as the air chamber. A certain number of air outlet nozzles are opened on one side of the tubular air chamber. The small high-speed turbine fan is installed at one end of the tubular air chamber. When working, it draws in air through the air inlet and injects it into the tubular air chamber. The other end of the tubular air chamber is sealed. The high-pressure air in the air chamber is ejected at high speed through the air outlet nozzle and the oblique jet nozzle of the tubular air chamber to form an air curtain.

[0015] This application's air curtain machine uses a high-speed turbine fan with a very small cross-sectional size as the air source, resulting in a very small cross-sectional size and a slender shape. This allows it to be easily placed on the door frame or door stop of a residential entrance door without affecting normal passage or aesthetics. Furthermore, since the main body of the air curtain machine adopts a rectangular structure with similar characteristics to the door frame, if similar colors and textures are used, it will blend into the door frame and door stop, making the air curtain machine almost invisible to users.

[0016] The air curtain machine is equipped with a limit switch with a roller. When the door opens or closes, the roller drives the limit switch, controlling the air curtain machine to power on and form an air curtain in the door area. This application can provide sufficient air volume and speed, effectively preventing mosquitoes from entering. Attached Figure Description

[0017] Figure 1 This is a cross-sectional schematic diagram of an invisible household mosquito-proof air curtain machine;

[0018] Figure 2 This is a schematic cross-sectional view of the outer shell of the air chamber;

[0019] Figure 3 This is a schematic diagram of a partial cross-section of the outer shell of the air chamber;

[0020] Figure 4 This is a partial cross-sectional schematic diagram of an air curtain machine;

[0021] Figure 5 yes Figure 4 Schematic diagram of cross section in the middle AA direction;

[0022] Figure 6 yes Figure 4 Schematic diagram of cross section in the middle BB direction;

[0023] Figure 7 It is an installation method. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings.

[0025] 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.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] Example:

[0031] Figure 1 This is a cross-sectional schematic diagram of an invisible household mosquito repellent air curtain machine, including an air chamber shell 6 that constitutes the main body of the air curtain machine. The air chamber shell 6 is hollow to form an air chamber. Multiple air outlet nozzles 7 are opened on the side of the air chamber shell 6 and communicate with the air chamber. The first end of the air chamber shell 6 is open and is equipped with a fan 3. The fan 3 uses a small high-speed turbine fan to deliver high-pressure air into the air chamber. Multiple oblique jet nozzles 10 are provided at the second end of the air chamber shell 6 and communicate with the air chamber. The high-pressure air in the air chamber is ejected at high speed through the oblique jet nozzles 10 and the air outlet nozzles 7 to form an air curtain. The air chamber shell 6 can be installed on the left or right side of the door frame so that a mosquito repellent air curtain is formed in the door frame area.

[0032] In this application, the first end of the air chamber housing 6 is designated as a, and the second end of the air chamber housing 6 is designated as b. The first end and the second end are two opposite ends.

[0033] Figure 2 This is a schematic cross-sectional view of the outer shell of the air chamber. Figure 3 This is a partial cross-sectional schematic diagram of the air chamber shell. The air chamber shell of this application is made of metal or non-metal square tubes, special-shaped tubes, etc., forming a slender structure, so that the air chamber is a tubular air chamber with a very small cross-sectional size, which is more suitable for installation on the door frame of the entrance door of a home, spraying out air to form an air curtain and achieve the mosquito prevention effect.

[0034] This invention utilizes a small, high-speed turbine fan to generate high-speed, high-pressure air. An exhaust nozzle 7 is located on the side to spray a straight-faced main air curtain, while an angled exhaust port 10 at the end sprays a fan-shaped air curtain. The edges of the straight-faced main air curtain and the fan-shaped air curtain are close together, forming a complete air curtain. Thus, the straight-faced main air curtain covers the area along the length of the air curtain machine, while the fan-shaped air curtain covers the area above the air curtain machine, ensuring the entire door frame area is covered, achieving excellent mosquito prevention. Even if the height of the door frame exceeds the length of the air curtain machine, the fan-shaped auxiliary air curtain can still cover the entire door frame area by installing the air inlet of the air curtain machine at the bottom or top of the left or right side of the door frame.

[0035] This invention can be installed on the left or right side of the door frame, and its cross-sectional size is very small, so it does not affect daily entry and exit.

[0036] Furthermore, the cross-sectional dimensions (width and height) of the air chamber housing 6 are no greater than 3.6cm x 3.6cm, and it has similar shape characteristics to the door stop to form a concealed installation.

[0037] This application sets the cross-section of the air curtain to a very small size. The thickness of the door stop on the door frame is generally about 4cm, while the thickness of this application is less than 3.6cm, slightly smaller than the door stop. The air curtain of this application is installed vertically on the inner side of the door stop, without affecting entry and exit at all, and is equipped with the same color as the door frame, making it almost invisible.

[0038] like Figure 3 As shown, the oblique jet nozzles 10 have different diameters and installation angles. The length-to-diameter ratio of the oblique jet nozzles 10 is greater than 1.5. Multiple oblique jet nozzles 10 are arranged in a fan shape so that high-pressure air is ejected through the oblique jet nozzles 10 to form a fan-shaped air curtain.

[0039] The diameters of the angled jet nozzles 10 vary. The height (or length) of this application is slightly shorter than the door, but not by much. The width of this application is much smaller than the door width, thus requiring a much shorter air delivery distance for the auxiliary air curtain area. A smaller diameter is sufficient, saving air volume. Multiple angled jet nozzles 10 are arranged in a fan shape, forming a fan-shaped auxiliary air curtain that can cover areas that the exhaust nozzles 7 cannot reach, leaving no gaps to prevent mosquitoes from entering.

[0040] This application has a certain number of oblique jet nozzles of different diameters, which are distributed in a fan shape so that the fixed-length air curtain can adapt to doors of different heights and form a complete air curtain.

[0041] like Figure 3 As shown, the oblique jet nozzle 10 is directly opened at the second end of the air chamber shell 6. Of course, it can also be done in the following way: the second end b is also an opening, and an exhaust end cover is set inside it, with the oblique jet nozzle 10 opened on the exhaust end cover. Both methods are acceptable.

[0042] like Figure 3 As shown, the air outlet nozzle 7 is a guide nozzle. The guide nozzle adopts an integral molding structure with the air chamber housing 6 or an embedded installation structure. The length-to-diameter ratio of the guide nozzle is greater than 1.5, so that the high-pressure air has better directionality and higher wind speed after being ejected through the guide nozzle.

[0043] The guiding nozzle of this application is used to rectify and accelerate the airflow, so that the ejected airflow has better directionality, sprays farther, and has a higher flow rate.

[0044] Figure 4 This is a partial cross-sectional schematic diagram of the air curtain machine. An air inlet cover 1 is installed at the first end opening a. The air inlet cover 1 is a sleeve type and is embedded in the first end opening a. An external folding lug 101 is provided at the outer end of the air inlet cover 1, which is engaged with the outer edge of the first end opening a. An air inlet filter 2 is installed at the inner end of the air inlet cover 1. A vibration damping rubber sleeve 5 is also provided on the inner wall of the first end opening a. The vibration damping rubber sleeve 5 is a sleeve type and is located between the air inlet filter 2 and the first air outlet nozzle 7. Figure 4 This embodiment only provides a structure for the air intake end; in actual production, the end cap may not be required.

[0045] exist Figure 4 In the illustrated example, the intake filter 2 of this application is used to filter air and prevent debris from entering. The vibration damping sleeve 5 provides vibration damping for the high-speed turbine fan, preventing excessive vibration.

[0046] exist Figure 4 In the example shown, the fan 3 includes a high-speed motor 302 and a fan blade 301. The high-speed motor 302 is fixedly connected to the vibration damping sleeve 5 via a motor support frame 4. The fan blade 301 is mounted on the high-speed motor 302, with the fan blade 301 facing outward and located inside the air intake filter 2.

[0047] The fan 3 in this application adopts a small high-speed turbine fan, the model of which is ZT-M2940N-Z03. The high-speed turbine fan 3 is very small in size, with a cross-sectional diameter of only 28.8mm. It occupies a small area, so the air curtain machine of this application can be made into a slender structure and can be installed at one end of the air curtain machine. This makes the cross-sectional size of the air curtain machine of this application very small, which can be well installed on the side of the door stop of the door frame without affecting normal entry and exit.

[0048] Because cross-flow fans and axial fans on the market are relatively large in size, although each has its advantages, their large size requires a large air chamber shell, making them unsuitable for home use and for installation on the side of a door frame. Therefore, this application adopts a small high-speed turbine fan, which is small in size, has high wind speed and high wind pressure, and is suitable for home air curtain machines.

[0049] Figure 5 yes Figure 4 A cross-sectional view along the AA direction is shown. A control switch is also installed at the second end opening b, used to control the operation or stop of the air curtain machine. In this embodiment, the control switch is a limit switch 9 with a roller. When the door opens or closes, it presses against or moves away from the switch roller 11, thereby controlling the opening and closing of the limit switch 9 to control the operating state of the fan 3.

[0050] Figure 6 yes Figure 4 A cross-sectional view along the BB direction is shown. A power socket 12 is also installed at the second end b for power supply.

[0051] The installation method of this application can be varied, for example, Figure 7This is an installation method where the length of the air curtain is fixed. The first end is the air inlet (a), and the second end is the air outlet (b). The first end (a) is installed on the side door stop where the door frame hinge is located, and at the bottom near the threshold (leaving room for air inlet). The second end (b) is located on the upper part of the door frame. The air blown out by the nozzle blows horizontally to the side of the door frame where the door handle is located, and the air blown out by the angled nozzle blows obliquely upwards, forming a complete air curtain.

[0052] For wider doors, a method of blowing air from both sides can be used.

[0053] The air curtain machine of this application can be installed in different ways and can be installed freely without replacing the air curtain machine itself.

[0054] This application uses a small high-speed turbine fan as the air source and a slender metal or non-metal square tube or irregular tube as the air chamber. A certain number of air outlet nozzles 7 are opened on one side of the tubular air chamber. The small high-speed turbine fan is installed at one end of the tubular air chamber. When working, it draws in air through the air inlet and injects it into the tubular air chamber. The other end of the tubular air chamber is directly sealed. The high-pressure air in the air chamber is ejected at high speed through the air outlet nozzles 7 and the oblique jet nozzles 10 of the tubular air chamber to form an air curtain.

[0055] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall fall within the scope of the technical solution of the present utility model.

Claims

1. A concealed household mosquito-proof air curtain machine, characterized in that: The device includes an air chamber housing (6) that forms the main body of the air curtain machine. The air chamber housing (6) is hollow to form an air chamber. Multiple air outlet nozzles (7) are opened on the side of the air chamber housing (6) and communicate with the air chamber. The first end of the air chamber housing (6) is open and equipped with a fan (3). The fan (3) is a small high-speed turbine fan used to deliver high-pressure air into the air chamber. The high-pressure air in the air chamber is ejected at high speed through the air outlet nozzles (7) to form an air curtain. The air chamber housing (6) can be installed on the left or right side of the door frame so that a mosquito-proof air curtain is formed in the area inside the door frame.

2. The invisible household mosquito curtain machine according to claim 1, characterized in that: The cross-sectional dimensions of the air chamber housing (6) are no greater than 3.6cm x 3.6cm, in order to form a concealed installation.

3. The invisible household mosquito curtain machine according to claim 1, characterized in that: The exhaust nozzle (7) is a guide nozzle. The guide nozzle adopts an integral molding structure with the air chamber shell (6) or an embedded installation structure. The length-to-diameter ratio of the guide nozzle is greater than 1.

5.

4. The invisible household mosquito curtain machine according to claim 1, characterized in that: Multiple oblique jet nozzles (10) communicating with the air chamber are provided at the second end of the air chamber housing (6). High-pressure air in the air chamber is ejected at high speed through the oblique jet nozzles (10) to form an auxiliary air curtain.

5. The invisible household mosquito curtain machine according to claim 4, characterized in that: The multiple inclined jet nozzles (10) have different diameters and installation angles. The length-to-diameter ratio of the inclined jet nozzles (10) is greater than 1.

5. The multiple inclined jet nozzles (10) are arranged in a fan shape so that the high-pressure air is ejected through the inclined jet nozzles (10) to form a fan-shaped auxiliary air curtain to adapt to door frames of different heights.

6. The invisible household mosquito curtain machine according to claim 1, characterized in that: An air inlet cover (1) is provided at the first end opening of the air chamber housing (6). The air inlet cover (1) is a sleeve type. The air inlet cover (1) is embedded in the first end opening, and an outer folding ear (101) is provided at the outer end of the air inlet cover (1). The outer folding ear (101) is stuck on the outer edge of the first end opening.

7. The invisible household mosquito curtain machine according to claim 6, characterized in that: An air intake filter (2) is installed on the inner end of the air intake end cover (1), and a vibration damping rubber sleeve (5) is also provided on the inner wall of the first end opening. The vibration damping rubber sleeve (5) is a sleeve type and is located between the air intake filter (2) and the first air outlet nozzle (7).

8. The invisible household mosquito curtain machine according to claim 1, characterized in that: A control switch is also provided at the second end of the air chamber housing (6), which is used to control the air curtain machine to work or stop.

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