A cabin air purification device

Abstract

This invention provides a cabin air purification device, belonging to the field of air purifier technology. The device includes an air purifier body and three negative ion generators fixed to the top of the air purifier body. These generators produce and release negative oxygen ions. A detachable grille is attached to the top of the air purifier body. The grille includes multiple strip grilles and three square grilles. The strip grilles are evenly arranged, with guide channels formed between adjacent grilles. The square grilles are fixed between the strip grilles, their positions corresponding to the negative ion generators. Multiple resonant cavities are fixed to the strip grilles to reduce the noise level of the air purifier body during operation. This invention can solve the serious air pollution problem existing in existing ship cabins, which can easily lead to health damage to crew members.

Description

Technical Field

[0001] This utility model belongs to the field of air purifier technology, and more specifically, relates to a cabin air purification device. Background Technology

[0002] Ship cabins are the primary living, working, and resting areas for crew members. Space is extremely limited on a ship, resulting in compact cabin designs and high personnel density. The confined spaces lead to poor air circulation, making it easy for pollutants to accumulate. The high humidity and salinity of the marine environment further contribute to mold growth, exacerbating air pollution and corroding equipment. Air pollutants within the cabins come from a wide range of sources, including carbon dioxide and biomass produced by human respiration, cooking fumes, volatile organic compounds (VOCs) from equipment operation, and dust and paint fumes from ship maintenance. Furthermore, if the ship is in wartime or on special missions, it may also be affected by external environmental pollution. The continuous swaying of a ship during navigation not only affects crew comfort but also makes dust and other particulate matter more easily suspended in the air, increasing the risk of respiratory diseases. The complex structure and dense piping of ship cabins make it difficult to lay ductwork for a fresh air system. At the same time, to ensure the ship's stealth, it is necessary to minimize external openings, making it difficult to locate the air intakes and exhaust vents for the fresh air system. Utility Model Content

[0003] In view of this, the present invention provides a cabin air purification device that can solve the serious air pollution problem in existing ship cabins, which can easily lead to damage to the health of crew members.

[0004] This utility model is implemented as follows:

[0005] This utility model provides a cabin air purification device, including an air purifier body and three negative ion generators. The three negative ion generators are fixed to the top of the air purifier body and are used to generate and release negative oxygen ions. The top of the air purifier body is detachably connected to a grille, which includes multiple strip grilles and three square grilles. The multiple strip grilles are evenly arranged, and guide grooves are formed between adjacent strip grilles. The square grilles are fixed between the strip grilles and their positions correspond to the negative ion generators. Multiple resonant cavities are fixed on the strip grilles to reduce the noise level of the air purifier body during operation. A connecting strap is connected to the side wall of the air purifier body by a buckle to fix the air purifier body inside the cabin.

[0006] Based on the above technical solution, the cabin air purification device of this utility model can be further improved as follows:

[0007] The strip grid plate has an airfoil structure in cross-section. The airfoil has an upper surface and a lower surface. The curvature of the upper surface is greater than that of the lower surface, thereby generating a pressure difference and creating lift when the airflow passes through.

[0008] The beneficial effects of adopting the above-mentioned improved scheme are as follows: The airfoil-shaped strip grille utilizes the Bernoulli effect to generate lift, assisting airflow discharge and improving air mixing efficiency. The different curvatures of the upper and lower surfaces of the airfoil structure can more effectively guide airflow, reduce airflow drag and turbulence, thereby improving airflow efficiency. By reducing airflow drag and turbulence, the energy consumption of the air purifier can be reduced, improving the overall system energy efficiency. The lift generated by the airfoil structure when airflow passes through can increase the airflow speed, allowing more air to pass through the purifier per unit time, thereby improving the purification effect.

[0009] Furthermore, the maximum thickness of the strip grid is located at the first 1 / 3 of its chord length, and the ratio of thickness to chord length is 0.08-0.15.

[0010] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: Setting the maximum thickness point at the first 1 / 3 of the chord length effectively delays the airflow separation point on the airfoil surface. Airflow separation leads to increased turbulence, thereby increasing drag and reducing lift. Delaying separation reduces turbulence generation and improves the airfoil's lift-to-drag ratio. By delaying airflow separation, the pressure gradient on the airfoil surface is reduced, thus reducing pressure drag and making airflow smoother. The maximum thickness at the first 1 / 3 helps to create a larger negative pressure zone on the upper surface, thereby increasing the lift coefficient. This can guide airflow more effectively and improve the purification efficiency of the air purifier. Reducing turbulence also reduces noise generated during airflow, thereby improving the air purifier's quietness performance.

[0011] Furthermore, the size of the guide channel decreases gradually from bottom to top, and the extension direction of the guide channel is consistent with the extension direction of the strip grid plate.

[0012] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the size of the guide channel decreases step by step from bottom to top, which can utilize the Venturi acceleration effect to accelerate the jet speed of the negative oxygen ion airflow and generate local negative pressure to assist the intake and mixing of the surrounding air.

[0013] Furthermore, the upper surface of the strip grid is provided with multiple protrusions, each with a diameter of 1 micrometer.

[0014] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the surface of the grille is provided with microstructure protrusions. The microstructure is designed based on the Coanda effect, which can form a thin airflow layer on the grille surface, reduce the resistance when the airflow is discharged, and improve the mixing efficiency of the airflow with the surrounding air.

[0015] Furthermore, the resonant cavity is set on the strip grid plate. The resonant cavity includes a rectangular cavity and a neck. The rectangular cavity has a flat structure and is set inside the strip grid plate. Each rectangular cavity is connected to a small hole leading to the surface of the strip grid plate as a neck. The resonant frequencies of adjacent resonant cavities are different.

[0016] The beneficial effects of the above-mentioned improvement scheme are as follows: the resonant cavity resonates with a specific noise frequency, thereby reducing the noise level of the air purifier during operation. The resonant cavity can form a Helmholtz resonant cavity. When the frequency of the sound wave approaches the natural resonant frequency of the Helmholtz resonant cavity, the air column in the neck will vibrate violently. Due to the vibration of the air column, sound energy is converted into heat energy, thereby reducing the intensity of sound waves at specific frequencies. Resonant cavities of different frequencies can absorb noise over a wider frequency range.

[0017] Furthermore, the connecting strap runs through the two inverted U-shaped handles on the side wall of the air purifier body and is connected to the table legs fixed on the floor of the cabin via a lift-up buckle. The connecting strap is designed to be adjustable in length.

[0018] Furthermore, the square grid plate has a rectangular structure, and its size is larger than that of the gas outlet of the negative ion generator. The midpoint of the square grid plate is aligned with the center of the gas outlet of the negative ion generator.

[0019] Furthermore, the surface of the grille is provided with an antistatic coating, the thickness of which is 0.05-0.2 mm.

[0020] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the anti-static coating can effectively reduce the adsorption of fine particles such as dust and hair on the grille surface due to static electricity. This means that the grille is less prone to getting dirty, significantly reducing the frequency of cleaning and saving maintenance time and effort.

[0021] Furthermore, the chord direction of the airfoil strip is at a positive angle of attack of 5° with the airflow direction.

[0022] The beneficial effects of adopting the above-mentioned improvement scheme are: the larger the angle of attack, the greater the lift generated by the airfoil; a larger angle of attack leads to a greater pressure difference between the upper and lower surfaces of the airfoil, thereby generating greater lift.

[0023] Compared with existing technologies, the beneficial effects of the cabin air purification device provided by this utility model are:

[0024] 1. Three negative ion generators produce and release negative oxygen ions. These negative oxygen ions rely on negative ion clusters formed by combining with water molecules to indirectly promote oxidation reactions. They can reduce some harmful substances in the air, such as particulate matter and ammonia, through adsorption and neutralization, thereby improving air quality. This ensures even distribution of negative oxygen ions in a large space, enhancing the purification effect.

[0025] 2. The airflow channels formed between the strip-shaped grilles effectively guide airflow and improve air purification efficiency. The square grille is positioned corresponding to the negative ion generator to ensure that negative oxygen ions can fully contact the air, thus enhancing the purification effect.

[0026] 3. Multiple resonant cavities are fixed on the strip grille, which effectively reduces the noise level of the air purifier during operation, improving user comfort. The grille is detachably connected to the top of the air purifier for easy cleaning and maintenance.

[0027] 4. The connecting strap is attached to the side wall of the air purifier body via buckles, securely fixing the purifier inside the cabin. This ensures that the purifier will not move or tip over due to inertia when the cabin shakes or vibrates, maintaining its stable operating position. A securely fixed purifier will not collide with the cabin walls or other equipment due to shaking, avoiding the risk of equipment damage or personal injury caused by collisions.

[0028] The length and position of the connecting strap can be adjusted as needed to ensure that the purifier can be securely fixed in different positions and angles. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 A side view of a cabin air purification device in use;

[0031] Figure 2 A rear view of a cabin air purification device;

[0032] Figure 3 A top view of a cabin air purification device;

[0033] The attached diagram lists the components represented by each number as follows:

[0034] 10. Air purifier body; 11. Negative ion generator; 20. Grille; 30. Strip grille; 40. Square grille; 50. Airflow guide channel; 60. Resonance cavity; 70. Connecting strip. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0036] like Figure 1-3 The illustration shows an embodiment of a cabin air purification device provided by this utility model. In this embodiment, it includes an air purifier body 10 and three negative ion generators 11, which are fixed to the top of the air purifier body 10. The negative ion generators 11 are used to generate and release negative oxygen ions. A grille 20 is detachably connected to the top of the air purifier body 10. The grille 20 includes multiple strip grilles 30 and three square grilles 40. The multiple strip grilles 30 are evenly arranged, and a guide groove 50 is formed between adjacent strip grilles 30. The square grilles 40 are fixed between the strip grilles 30, and the position of the square grilles 40 corresponds to the negative ion generators 11. Multiple resonant cavities 60 are fixed on the strip grilles 30. The resonant cavities 60 are used to reduce the noise level of the air purifier body 10 when it is working. A connecting strap 70 is connected to the side wall of the air purifier body 10 by a buckle. The connecting strap 70 is used to fix the air purifier body 10 inside the cabin.

[0037] The air purifier body 10 is a fast odor removal, sterilization, and deodorization ionizer, model KJ150D-EM013.

[0038] In the above technical solution, the cross-section of the strip grid plate 30 is an airfoil structure. The airfoil has an upper surface and a lower surface. The curvature of the upper surface is greater than that of the lower surface, thereby generating a pressure difference when the airflow passes through, thus forming lift.

[0039] Furthermore, in the above technical solution, the maximum thickness of the strip grid plate 30 is located at the first 1 / 3 of its chord length, and the ratio of thickness to chord length is 0.08-0.15.

[0040] Furthermore, in the above technical solution, the size of the guide channel 50 decreases gradually from bottom to top, and the extension direction of the guide channel 50 is consistent with the extension direction of the strip grid plate 30.

[0041] Furthermore, in the above technical solution, the upper surface of the strip grid plate 30 is provided with multiple protrusions, the diameter of which is 1 micrometer.

[0042] Furthermore, in the above technical solution, the resonant cavity 60 is disposed on the strip grid plate 30. The resonant cavity 60 includes a rectangular cavity and a neck. The rectangular cavity has a flat structure and is disposed inside the strip grid plate 30. Each rectangular cavity is connected to a small hole leading to the surface of the strip grid plate 30 as a neck. The resonant frequencies of adjacent resonant cavities 60 are different.

[0043] Furthermore, in the above technical solution, the connecting strap 70 passes through the two inverted U-shaped handles on the side wall of the air purifier body 10 and is connected to the table legs fixed on the cabin floor by a lifting buckle. The connecting strap 70 is designed to be adjustable in length.

[0044] Furthermore, in the above technical solution, the square grid plate 40 has a rectangular structure, the size of the square grid plate 40 is larger than the size of the gas outlet of the negative ion generator 11, and the midpoint of the square grid plate 40 is aligned with the center of the gas outlet of the negative ion generator 11.

[0045] Furthermore, in the above technical solution, the surface of the grille 20 is provided with an antistatic coating, the thickness of which is 0.05-0.2 mm.

[0046] Furthermore, in the above technical solution, the chord direction of the airfoil strip 30 forms a positive angle of attack of 5° with the airflow direction.

[0047] Place the air purifier in a suitable position inside the chamber. Secure the air purifier to another object (such as a table leg) inside the chamber using the connecting straps, adjusting the strap length for stability. Ensure the grille is properly aligned with the top of the air purifier and the square grille panel is aligned with the gas outlet of the negative ion generator. Turn on the air purifier; the negative ion generator will begin working, producing negative oxygen ions and releasing them into the chamber.

[0048] Air passes through the bar grilles and guide channels, optimizing airflow distribution and improving purification efficiency. The resonant cavity reduces noise, ensuring a quiet environment inside the cabin.

[0049] Example 1: Application of cabin air purification devices

[0050] The air purifier body measures 500mm × 300mm × 400mm. It has three negative ion generators, evenly distributed on the top. Twelve strip-shaped grilles, each 500mm long with a thickness-to-chord ratio of 0.12, are evenly arranged. Each grille contains ten resonant cavities, covering a frequency range of 50Hz-500Hz. The connecting strap is made of nylon and its length is adjustable from 300mm to 600mm. The connecting strap is fixed to the table legs inside the cabin, which are then fixed to the cabin floor. After the negative ion generators are activated, the formaldehyde concentration in the cabin decreases from 0.12mg / m³ to 0.03mg / m³, and the noise level decreases from 45dB to 38dB, meeting the requirements for a quiet cabin environment. Once secured by the connecting straps, the equipment remains stable even when the ship is rocking.

[0051] Specifically, the principle of this invention is as follows: Three negative ion generators are fixed to the top of the air purifier body to generate and release negative oxygen ions. These negative oxygen ions, through adsorption and neutralization, effectively reduce particulate matter (such as PM2.5 and dust) in the air and promote the degradation of some gaseous pollutants (such as formaldehyde and TVOCs), thus achieving air purification. The strip-shaped grid plate has an airfoil structure, generating lift through the pressure difference produced when airflow passes through, optimizing airflow distribution and improving purification efficiency. The guide grooves decrease in size from bottom to top, guiding airflow evenly and avoiding turbulence. The square grid plate is aligned with the gas outlet of the negative ion generator to ensure uniform release of negative oxygen ions. A resonant cavity is set on the strip-shaped grid plate, reducing the noise level of the air purifier during operation through resonant cavities with different resonant frequencies.

[0052] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A cabin air purification device, comprising an air purifier body and three negative ion generators fixed to the top of the air purifier body, the negative ion generators being used to generate and release negative oxygen ions, characterized in that... The top of the air purifier body is detachably connected to a grille, which includes multiple strip grilles and three square grilles. The multiple strip grilles are evenly arranged, and airflow channels are formed between adjacent strip grilles. The square grilles are fixed between the strip grilles, and their positions correspond to the negative ion generator. Multiple resonant cavities are fixed on the strip grilles. The resonant cavities are used to reduce the noise level of the air purifier body when it is working. Connecting straps are connected to the side wall of the air purifier body by buckles. The connecting straps are used to fix the air purifier body inside the chamber.

2. The cabin air purification device according to claim 1, characterized in that, The cross-section of the strip grid plate is an airfoil structure. The airfoil has an upper surface and a lower surface. The curvature of the upper surface is greater than that of the lower surface, thereby generating a pressure difference when the airflow passes through, thus creating lift.

3. The cabin air purification device according to claim 2, characterized in that, The maximum thickness of the strip grid is located at the first 1 / 3 of its chord length, and the ratio of thickness to chord length is 0.08-0.

15.

4. The cabin air purification device according to claim 3, characterized in that, The size of the flow guide channel decreases gradually from bottom to top, and the extension direction of the flow guide channel is consistent with the extension direction of the strip grid plate.

5. A cabin air purification device according to claim 4, characterized in that, The upper surface of the strip grid has multiple protrusions, each with a diameter of 1 micrometer.

6. A cabin air purification device according to claim 5, characterized in that, The resonant cavity is set on the strip grid plate. The resonant cavity includes a rectangular cavity and a neck. The rectangular cavity has a flat structure and is set inside the strip grid plate. Each rectangular cavity is connected to a small hole leading to the surface of the strip grid plate as a neck. The resonant frequencies of adjacent resonant cavities are different.

7. A cabin air purification device according to claim 6, characterized in that, The connecting strap runs through the two inverted U-shaped handles on the side wall of the air purifier body and connects to the table legs fixed to the floor of the chamber via a lift-up buckle. The connecting strap is designed to be adjustable in length.

8. A cabin air purification device according to claim 7, characterized in that, The square grid plate has a rectangular structure, and its size is larger than that of the gas outlet of the negative ion generator. The midpoint of the square grid plate is aligned with the center of the gas outlet of the negative ion generator.

9. A cabin air purification device according to claim 8, characterized in that, The surface of the grille is coated with an antistatic coating with a thickness of 0.05-0.2 mm.

10. A cabin air purification device according to claim 2, characterized in that, The chord direction of the airfoil-shaped slats forms a positive angle of attack of 5° with the direction of airflow.

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