Exhaust fan
By designing a simple and compact exhaust fan, using photocatalytic sterilization module and micro-electrostatic dust removal module for air purification, the existing exhaust fan has solved the problems of complex structure, high maintenance cost and secondary pollution, and achieved efficient and low-cost air purification effect.
Patent Information
- Application Number
- CN202422184538.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-05
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-09-05
AI Technical Summary
The existing exhaust fans have complex structures, large space occupancy, high maintenance costs, and will produce ozone and cause secondary pollution during use.
An exhaust fan including a panel, inner shell, intermediate shell and outer shell is designed, and a photocatalytic sterilization module and a micro-electrostatic dust removal module are used to purify the air. The structure is simple and compact, the maintenance cost is low, and there is no secondary pollution.
The structure of the exhaust fan is simplified and compact, reducing maintenance costs, avoiding secondary pollution, and improving air purification efficiency.
Smart Images
Figure CN222811891U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of air purification equipment, in particular to an exhaust fan. Background Art
[0002] The exhaust fan of the prior art has an exhaust mode and an air purification mode. The exhaust fan of the prior art purifies the indoor air in the following two ways:
[0003] 1. The disadvantage of using activated carbon to purify the air is that after the activated carbon is saturated, it can no longer adsorb and needs to be regenerated at high temperature. The regeneration cannot be done in situ and the activated carbon module needs to be returned to the factory for regeneration. It is very inconvenient. 2. Using ultraviolet rays to purify the air, the places where ultraviolet rays cannot reach cannot be disinfected, and a certain amount of ozone will be generated. The strong oxidizing property of ozone and hydroxyl free radicals react with volatile organic matter to remove odor. Under the strong oxidizing property of ozone and hydroxyl free radicals, bacteria and microorganisms coagulate cell proteins, making disinfection possible.
[0004] Exhaust fans in the prior art have the following disadvantages: 1. Complex structure and large space occupation. 2. High maintenance cost. 3. Ozone will be generated during use, causing secondary pollution. Utility Model Content
[0005] The technical problem to be solved by the utility model is to provide an exhaust fan which has a simple and compact structure, low maintenance cost and no secondary pollution when in use.
[0006] To solve the above technical problems, the utility model provides an exhaust fan, comprising a panel, wherein the rear end of the panel is provided with an inner cover shell, an intermediate cover shell, and an outer cover shell, which are arranged in sequence from the inside to the outside, an exhaust chamber is formed between the inner side of the outer cover shell and the intermediate cover shell, a purified air chamber is formed between the inner side of the intermediate cover shell and the inner cover shell, an exhaust port connected to the exhaust chamber is provided on the panel, an air outlet is provided at the rear end of the outer cover shell, an exhaust duct is connected to the air outlet, a first fan is provided in the exhaust duct, a purified air inlet connected to the inner cavity of the inner cover shell is provided on the panel, a purification component is provided in the inner cover shell, the purification component comprises a photocatalyst sterilization module and a micro-electrostatic dust removal module, an exhaust port is provided at the rear end of the inner cover shell, a second fan is connected to the exhaust port, and a purified air outlet connected to the purified air chamber is provided on the panel.
[0007] Further preferably, there are multiple exhaust ports, and the multiple exhaust ports are evenly distributed along the circumferential direction; the multiple exhaust ports make the exhaust fan more efficient in exhausting indoor air.
[0008] Further preferably, the panel includes an annular plate, an intermediate plate is arranged in the center of the annular plate, the purified air outlet is formed between the intermediate plate and the annular plate, and the intermediate plate and the annular plate are connected by a plurality of air guide plates; the annular purified air outlet makes the exhaust fan more efficient in purifying indoor air.
[0009] The beneficial effects of the utility model are as follows: the exhaust fan includes an exhaust mode and an air purification mode. In the exhaust mode, the exhaust fan draws indoor air from the exhaust port into the exhaust chamber through the first fan, and then flows through the exhaust duct to be discharged to the outdoors; in the air purification mode, the exhaust fan draws indoor air into the inner cavity of the inner cover shell through the second fan, and the photocatalyst sterilization module and the micro-electrostatic dust removal module respectively sterilize and remove dust from the air flowing through, and the purified air is drawn into the purified air chamber by the second fan, and then flows out from the purified air outlet into the indoor room; the exhaust fan of the present utility model has a simple and compact structure, low maintenance cost, and will not generate secondary pollution when used. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] In order to clearly illustrate the innovative principle of the utility model and its advantages over existing exhaust fans, possible embodiments are described below by non-limiting examples of applying the principle with the aid of the accompanying drawings. In the drawings:
[0011] Figure 1 A schematic diagram of an exhaust fan of the utility model;
[0012] Figure 2 It is the front view of the exhaust fan. DETAILED DESCRIPTION
[0013] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0014] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.
[0015] It should be noted that all directional indications in the present embodiment (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0016] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example
[0017] like Figure 1-2 , an exhaust fan, comprising a panel 1, wherein the rear end of the panel 1 is provided with an inner cover shell 2, an intermediate cover shell 3, and an outer cover shell 4 which are arranged in sequence from the inside to the outside, an exhaust chamber 5 is formed between the inner side of the outer cover shell 4 and the intermediate cover shell 3, and a purified air chamber 6 is formed between the inner side of the intermediate cover shell 3 and the inner cover shell 2, an exhaust port 7 connected to the exhaust chamber 5 is opened on the panel 1, an air outlet 8 is opened at the rear end of the outer cover shell 4, an exhaust duct 9 is connected to the air outlet 8, a first fan 10 is arranged in the exhaust duct 9, a purified air inlet 11 connected to the inner cavity of the inner cover shell 2 is opened on the panel 1, a purification component 12 is arranged in the inner cover shell 2, and the purification component 12 includes a photocatalyst sterilization module and a micro-electrostatic dust removal module, an exhaust port is opened at the rear end of the inner cover shell 2, a second fan 13 is connected to the exhaust port, and a purified air outlet 14 connected to the purified air chamber 6 is opened on the panel 1.
[0018] The photocatalyst sterilization module is a special metal surface compounded with nano-photocatalytic materials through dual-wavelength ultraviolet light irradiation. Under the action of ultraviolet lamps with wavelengths of 185nm and 253.7nm, it undergoes photoelectrocatalytic reactions with water and oxygen in the air, producing photoplasma groups including hydroxyl radical ions, superoxide ions, pure negative ions and hydrogen peroxide ions. This photoplasma group can quickly kill microbial pollutants such as bacteria, viruses and molds in the air, and can also catalyze the oxidation of harmful chemical gases such as formaldehyde, benzene, TVOC, and ammonia in the air. The photoplasma group is quickly reduced to carbon dioxide and water in the process of purifying and disinfecting the air, without any chemical residues, no secondary pollution, and harmless to the human body and the environment. In the process of disinfection and purification, the ozone content is strictly controlled below the US federal standard of 0.04ppm, which is much lower than the Chinese standard of 0.16mg / m3. Nano-photocatalysis has been proven to be a more effective method for removing pollution in the air and on the surface of objects.
[0019] The photocatalyst sterilization module has the following advantages: 1. Disinfection and sterilization, nano-light plasma, can kill bacteria and viruses (such as Legionella, influenza virus, MRSA malignant bacteria, E. coli, etc.) in the air, with a killing rate of ≥99%. 2. Degradation of pollution, catalytic degradation of volatile organic harmful chemicals in the air and pipelines, such as TVOC, formaldehyde, benzene, ammonia, etc., with a purification rate of up to 90%, in order to prevent high concentrations of "teratogenic, carcinogenic, mutagenic" harmful substances from invading the human body. 3. Remove odors, quickly remove odors and odors produced by chemical organic matter, human activities, pets, microorganisms, etc., with a purification rate of 95%. 4. Degrade dust, can effectively degrade pollen, smoke, floating dust and other fine dust particles, and refresh the air. 5. Comfort, a certain concentration of negative ions generated by the negative ion generator, which is emitted into the indoor air, can calm the human nervous system, promote the elimination of fatigue, and have the effect of inhibiting asthma and lowering blood pressure, greatly increasing the comfort of the human body.
[0020] The micro-electrostatic dust removal module uses a field electric module, i.e. a charging module, to generate an 8000-volt electrostatic field between the discharge electrodes, which instantly charges the particles passing through the electric field. The module uses negative electrode discharge, which can simultaneously generate a large number of negative ions, making the air healthy and fresh. The 1MM-sized staggered micro-cavity dense array formed by the unique graphene dielectric material forms a micro-electrostatic matrix with a strong electric field, exerting a huge attraction on the charged particles running in the air, and can absorb almost 100% of the moving particles in the air while only generating minimal airflow impedance, and is particularly effective in removing particulate pollutants such as PM2.5.
[0021] The micro-electrostatic dust removal module has the following advantages: 1. No consumables, can be washed repeatedly, no need to replace, and can be used for a long time. 2. Zero ozone, micro-electrostatic technology, no ozone, no harm to human health, and avoid flat-panel electrostatic ozone exceeding the standard. 3. No secondary pollution, kill bacteria and viruses through micro-static electricity, and avoid serious secondary air pollution caused by failure to replace the HEPA filter. 4. High safety, using insulating materials, there will be no problems such as ignition and breakdown of flat-panel static electricity. 5. Energy saving, low system energy consumption, protect the central air-conditioning system, and the wind resistance is less than 15Pa. 6. No noise, no noise caused by discharge and ignition, suitable for any public and home environment that requires quiet. 7. Low after-sales cost, only regular cleaning is required, and it can be used repeatedly. 8. Not limited by the size of the installation space, strong applicability.
[0022] Preferably, there are multiple exhaust ports 7, and the multiple exhaust ports 7 are evenly distributed along the circumferential direction; the multiple exhaust ports 7 make the exhaust fan more efficient in exhausting indoor air.
[0023] Preferably, the panel 1 includes an annular plate 15, an intermediate plate 16 is arranged in the center of the annular plate 15, the purified air outlet 14 is formed between the intermediate plate 16 and the annular plate 15, and the intermediate plate 16 and the annular plate 15 are connected by a plurality of air guide plates 17; the annular purified air outlet 14 makes the exhaust fan more efficient in purifying indoor air.
[0024] The exhaust fan includes an exhaust mode and an air purification mode. In the exhaust mode, the exhaust fan draws indoor air from the exhaust port 7 into the exhaust chamber 5 through the first fan 10, and then flows through the exhaust duct 9 to be discharged to the outdoors; in the air purification mode, the exhaust fan draws indoor air into the inner cavity of the inner cover shell 2 through the second fan 13, and the photocatalyst sterilization module and the micro-electrostatic dust removal module sterilize and remove dust from the air flowing through, respectively. The purified air is drawn into the purified air chamber 6 by the second fan 13, and then flows out from the purified air outlet 14 into the room; the exhaust fan of this embodiment has a simple and compact structure, low maintenance cost, and will not generate secondary pollution when used.
[0025] The above is a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.
Claims
1. An exhaust fan, characterized in that: The invention comprises a panel (1), wherein the rear end of the panel (1) is provided with an inner cover shell (2), an intermediate cover shell (3), and an outer cover shell (4) which are arranged in sequence from the inside to the outside, an exhaust chamber (5) is formed between the inner side of the outer cover shell (4) and the intermediate cover shell (3), and a purified air chamber (6) is formed between the inner side of the intermediate cover shell (3) and the inner cover shell (2), an exhaust port (7) connected to the exhaust chamber (5) is formed on the panel (1), and an air outlet (8) is formed on the rear end of the outer cover shell (4), and an exhaust port (8) is connected to the exhaust port (6). An air duct (9), wherein a first fan (10) is arranged in the exhaust duct (9), a purified air inlet (11) connected to the inner cavity of the inner casing (2) is provided on the panel (1), a purification component (12) is arranged in the inner casing (2), the purification component (12) comprises a photocatalyst sterilization module and a micro-electrostatic dust removal module, an exhaust port is provided at the rear end of the inner casing (2), a second fan (13) is connected to the exhaust port, and a purified air outlet (14) connected to the purified air chamber (6) is provided on the panel (1).
2. The exhaust fan according to claim 1, characterized in that: The number of the air outlets (7) is multiple, and the multiple air outlets (7) are distributed at intervals along the circumferential direction.
3. The exhaust fan according to claim 1, characterized in that: The panel (1) comprises an annular plate (15), an intermediate plate (16) is arranged at the center of the annular plate (15), the purified air outlet (14) is formed between the intermediate plate (16) and the annular plate (15), and the intermediate plate (16) and the annular plate (15) are connected via a plurality of air guide plates (17).