Low-noise, high-energy-efficiency, anti-infection negative-pressure isolation air curtain

Abstract

The present invention belongs to the technical field of air purification equipment, and relates to a low-noise, high-energy-efficiency anti-infection negative-pressure isolation air curtain, which includes a box body with a hexagonal prism structure, a backward-inclined centrifugal fan installed in the box body, and a negative-pressure air duct extending from above the box body. The axis of the backward-inclined centrifugal fan coincides with the center line of the box body. The box body is provided with air outlet grilles on the prism side, a filter screen is installed inside the air outlet grilles, and the air inlet of the backward-inclined centrifugal fan is connected to the inside of the negative-pressure air duct. Through the design of the box body with a hexagonal prism structure and the selection of the backward-inclined centrifugal fan, the space of the box body is effectively utilized, and it has low noise, high energy efficiency, and can prevent infection, making it suitable for use in hospitals.

Description

Technical Field

[0001] The present invention relates to the technical field of air purification equipment, and particularly to a low-noise, high-energy-efficiency, anti-infection negative-pressure isolation air curtain. Background Art

[0002] Respiratory infectious diseases refer to infectious diseases caused by pathogens invading through the respiratory tract such as the nasal cavity, pharynx, larynx, trachea, and bronchus of the human body. When treating patients with respiratory infectious diseases, doctors need to be in close contact with the patients. Even if the patients wear masks, due to mask leakage, doctors are still easily infected, resulting in losses to medical staff. To reduce this risk, we have developed an air curtain device, that is, by blowing air on one side and sucking air on the other side, the air between the doctor and the patient can be quickly exchanged to prevent the respiratory infectious diseases from being transmitted from the patient to the doctor during the patient's visit. However, there are still some deficiencies in the existing equipment:

[0003] 1) The working noise of the air curtain is relatively high, making the consultation environment noisy and not conducive to communication between doctors and patients;

[0004] 2) The energy efficiency of the air curtain is relatively low, and continuous use is relatively power-consuming;

[0005] 3) For the air curtain machine on the negative pressure side, the air carrying germs will stick to the chassis, which may cause secondary pollution.

[0006] Therefore, it is necessary to develop a new air curtain device to meet the above requirements. Summary of the Invention

[0007] The main purpose of the present invention is to provide a low-noise, high-energy-efficiency, anti-infection negative-pressure isolation air curtain, which can effectively utilize the box space, has low noise, high energy efficiency, and can prevent infection.

[0008] The present invention realizes the above object through the following technical solutions: A low-noise, high-energy-efficiency, anti-infection negative-pressure isolation air curtain, including a box body with a hexagonal prism structure, a backward-inclined centrifugal fan installed in the box body, and a negative-pressure air duct extending from above the box body. The axis of the backward-inclined centrifugal fan coincides with the center line of the box body. The box body is provided with air outlet grilles on the prism side surfaces, and a filter screen is installed inside the air outlet grilles. The air inlet of the backward-inclined centrifugal fan is connected to the inside of the negative-pressure air duct.

[0009] Specifically, the negative-pressure air duct includes a vertical air inlet surface, and air inlets are arranged in an array on the air inlet surface.

[0010] Specifically, four universal wheels are provided at the bottom of the box body.

[0011] Specifically, the box body has a hexagonal prism structure lying on its side with one prism side surface facing downward, and the air outlet grilles are located on the four prism side surfaces on both sides of the backward-inclined centrifugal fan.

[0012] Further, windward guide plates are symmetrically arranged on the upper and lower sides of the rear-inclined centrifugal fan on the box body, and the cross section of the windward guide plate is an Archimedean spiral with the axis of the rear-inclined centrifugal fan as the center line.

[0013] Further, a number of coaxial 90° arc-shaped air guide plates are arranged in the negative pressure air duct, and the 90° arc-shaped air guide plates make the wind direction turn from vertical to horizontal and enter the axis of the rear-inclined centrifugal fan.

[0014] Specifically, the filter screen is fixed in the chassis through two symmetrically arranged folding plates up and down. The folding plates include three planes with equal lengths and an included angle of 120° between adjacent faces. The middle plane is used to fix to the chassis, and the two side planes are used to install the filter screen; the outer ends of the two side planes are also provided with outward flanging edges, and the two folding plates are fixed into a hexagonal prism frame structure through the outward flanging edges on both sides.

[0015] Specifically, the surface of the box body has an antibacterial coating.

[0016] The beneficial effects of the technical solution of the present invention are:

[0017] Through the design of the box body with a hexagonal prism structure and the selection of the rear-inclined centrifugal fan, the space of the box body is effectively utilized, and it has low noise, high energy efficiency, can prevent infection, and is suitable for use in hospitals. Description of the Drawings

[0018] Figure 1 It is a perspective view of the front of the negative pressure isolation air curtain for the embodiment;

[0019] Figure 2 It is a perspective view of the rear of the negative pressure isolation air curtain for the embodiment when the rear cover is removed;

[0020] Figure 3 It is a rear view of the inside of the chassis;

[0021] Figure 4 It is a perspective view of the folding plate;

[0022] Figure 5 It is a partial cross-sectional view of the position of the rear-inclined centrifugal fan.

[0023] The numbers in the figure represent:

[0024] 1 - box body, 11 - air outlet grille, 12 - universal wheel, 13 - windward guide plate;

[0025] 2 - rear-inclined centrifugal fan,

[0026] 3 - negative pressure air duct, 31 - air inlet surface, 32 - air inlet, 33 - 90° arc-shaped air guide plate;

[0027] 4 - filter screen;

[0028] 5 - folding plate, 51 - middle plane, 52 - two side planes, 53 - outward - turned edge. Detailed implementation mode

[0029] The present invention will be further described in detail below with reference to specific embodiments.

[0030] Embodiment:

[0031] As Figures 1 to 5 shown, a low - noise, high - energy - efficiency anti - infection negative - pressure isolation air curtain of the present invention includes a box body 1 with a hexagonal prism structure, a backward - inclined centrifugal fan 2 installed inside the box body 1, and a negative - pressure air duct 3 extending from above the box body 1. The axis of the backward - inclined centrifugal fan 2 coincides with the center line of the box body 1. The box body 1 is provided with an air outlet grille 11 on the prism side surface, a filter screen 4 is installed inside the air outlet grille 11, and the air inlet of the backward - inclined centrifugal fan 2 is connected to the inside of the negative - pressure air duct 3. The box body 1 with a hexagonal prism structure facilitates the installation of the filter screen 4. Compared with a box body with a rectangular structure, the air outlet area is larger, and the structure is more adapted to the structure of the backward - inclined centrifugal fan 2, so that the space is effectively utilized, and the noise is low and the energy efficiency is high. The axial air inlet of the backward - inclined centrifugal fan 2 sucks air from the negative - pressure air duct 3, then the air is ejected around under the action of centrifugal force, and finally blown out from the air outlet grille 11. Before passing through the air outlet grille 11, the air will be purified by the filter screen 4. Through the box - body design of the hexagonal prism structure and the selection of the backward - inclined centrifugal fan, the space of the box body is effectively utilized, and it has low noise, high energy efficiency, can prevent infection, and is suitable for use in hospitals.

[0032] As Figure 1 shown, the negative - pressure air duct 3 includes a vertical air inlet surface 31, and air inlets 32 arranged in an array are provided on the air inlet surface 31. The air inlet surface of the negative - pressure isolation air curtain needs to have a certain width and allow air to be evenly sucked in. This structure can suck air better.

[0033] As Figure 1 and Figure 2 shown, four universal wheels 12 are provided at the bottom of the box body 1. The universal wheels 12 can facilitate the negative - pressure isolation air curtain to be dragged to the required position to meet different air - sucking requirements.

[0034] As Figures 1 to 3 shown, the box body 1 has a hexagonal prism structure lying on its side and one of its prism side surfaces faces downward, and the air outlet grille 11 is located on four prism side surfaces on both sides of the backward - inclined centrifugal fan 2. In this way, the air outlet surface of the negative - pressure isolation air curtain is only on both sides, avoiding stirring the indoor air in the up - and - down direction and causing unnecessary diffusion of bacteria - carrying air.

[0035] As Figures 1 to 3As shown, windward guide plates 13 are symmetrically arranged on the upper and lower sides of the rear-inclined centrifugal fan 2 in an axisymmetric manner. The cross-section of the windward guide plate 13 is an Archimedean spiral with the axis of the rear-inclined centrifugal fan 2 as the center line. The windward guide plate 13 can guide the wind force to the air outlet surface where the air outlet grille 11 is located, and its structure can improve energy efficiency and reduce noise.

[0036] As Figure 5 shown, several coaxial 90° arc-shaped air guide plates 33 are provided in the negative pressure air duct 3. The 90° arc-shaped air guide plates 33 turn the wind direction from vertical to horizontal and enter the axis of the rear-inclined centrifugal fan 2. The 90° arc-shaped air guide plates 33 can also improve energy efficiency and reduce noise.

[0037] As Figure 3 and Figure 4 shown, the filter screen 4 is fixed in the chassis 1 by two symmetrically arranged folding plates 5 up and down. The folding plate 5 includes three planes with equal lengths and an included angle of 120° between adjacent planes. The middle plane 51 is used to fix to the chassis 1, and the two side planes 52 are used to install the filter screen 4; outer flanging 53 is also provided at the outer ends of the two side planes 52. The two folding plates 5 are fixed into a hexagonal prism frame structure through the outer flanging 53 on both sides. The structure of this folding plate 5 can be obtained only by folding multiple times, which is convenient for manufacturing and can better adapt to the structure of the chassis 1 to reliably fix the filter screen 4.

[0038] The surface of the chassis 1 is coated with an antibacterial coating. The antibacterial coating can kill the viruses in the air that come into contact with the surface of the chassis 1 on the spot, effectively avoiding secondary pollution.

[0039] The above are only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the inventive concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A low-noise, high-energy-efficiency anti-infection negative-pressure isolation air curtain, characterized in that: It includes a box body with a hexagonal prism structure, a backward-inclined centrifugal fan installed inside the box body, and a negative pressure air duct extending from above the box body. The box body has a hexagonal prism structure in a lying position with one prism side facing downward. The axis of the backward-inclined centrifugal fan coincides with the center line of the box body. The box body is provided with air outlet grilles on the prism side, and the air outlet grilles are located on four prism sides on both sides of the backward-inclined centrifugal fan; a filter screen is installed inside the air outlet grille, and the air inlet of the backward-inclined centrifugal fan is connected to the inside of the negative pressure air duct; the filter screen is fixed inside the chassis by two symmetrically arranged upper and lower folding plates. The folding plate includes three planes with equal lengths and an included angle of 120° between adjacent faces. The middle plane is used to fix to the chassis, and the two side planes are used to install the filter screen; outer flanges are also provided at the outer ends of the two side planes, and the two folding plates are fixed into a hexagonal prism frame structure through the outer flanges on both sides.

2. The low-noise, high-energy-efficiency anti-infection negative pressure isolation air curtain according to claim 1, wherein: The negative pressure air duct includes a vertical air inlet surface, and air inlets are arranged in an array on the air inlet surface.

3. The low-noise, high-energy-efficiency anti-infection negative-pressure isolation air curtain according to claim 1, characterized in that: Four universal wheels are provided at the bottom of the box body.

4. The low-noise, high-energy-efficiency anti-infection negative pressure isolation air curtain according to claim 1, wherein: Smooth wind guides are symmetrically arranged on the upper and lower sides of the box body with respect to the backward-inclined centrifugal fan. The cross-section of the smooth wind guide is an Archimedean spiral with the axis of the backward-inclined centrifugal fan as the center line.

5. The low-noise, high-energy-efficiency anti-infection negative-pressure isolation air curtain according to claim 1, wherein: A number of coaxial 90° arc-shaped wind guide plates are provided inside the negative pressure air duct, and the 90° arc-shaped wind guide plates direct the wind direction from vertical to horizontal and into the axis of the backward-inclined centrifugal fan.

6. The low-noise, high-energy-efficiency anti-infection negative-pressure isolation air curtain according to claim 1, wherein: The surface of the box body has an antibacterial coating.

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