Deodorization device and deodorization system

Abstract

The present invention relates to the field of air purification technology, and more specifically, to an odor removal device and odor removal system. The odor removal device comprises: a first insulating tube having an air inlet and an air outlet; a high-voltage electrode disposed within the first insulating tube, the high-voltage electrode being suitable for connection to the high-voltage terminal of a power supply; a first ground electrode, suitable for grounding, the first ground electrode being disposed around the outside of the first insulating tube; a second insulating tube, surrounding the outside of the first insulating tube and having a gap therebetween, the second insulating tube having a closed end and an open end, the closed end being opposite and spaced from the air outlet, and the open end being closer to the air inlet; and a second ground electrode, suitable for grounding, the second ground electrode being disposed around the outside of the second insulating tube. A plasma discharge region is concentrated within the space between the first ground electrode and the second insulating tube, allowing gas to fully pass through the plasma discharge region, effectively removing harmful substances such as aldehydes, benzenes, mercaptans, and ammonia from the air.

Description

Technical Field

[0001] The present invention relates to the technical field of air purification, and in particular to a deodorizing device and a deodorizing system. Background Art

[0002] High-quality air is essential for national health. In the home environment, poor ventilation, insufficient lighting, and odors from fermented garbage lead to the accumulation of harmful substances and pollutants, seriously affecting the quality of life in a healthy home. Summary of the Invention

[0003] Therefore, the object of the present invention is to provide a deodorizing device and a deodorizing system that can effectively remove harmful substances such as aldehydes, benzenes, thiols, ammonia, etc. in the air, thereby improving the air quality.

[0004] In order to solve the above technical problems, the present invention provides an odor removal device, comprising: a first insulating tube, having an air inlet and an air outlet; a high-voltage electrode, arranged in the first insulating tube, and the high-voltage electrode is suitable for being connected to the high-voltage end of a power supply; a first ground electrode, suitable for being grounded, and the first ground electrode is arranged around the outside of the first insulating tube; a second insulating tube, surrounding the outside of the first insulating tube and having a gap between the second insulating tube and the first insulating tube, the second insulating tube having a closed end and an open end, the closed end is opposite to the air outlet and is arranged at intervals, and the open end is close to the air inlet; a second ground electrode, suitable for being grounded, and the second ground electrode is arranged around the outside of the second insulating tube.

[0005] Optionally, the high voltage pole is arranged in a spiral shape.

[0006] Optionally, the first ground electrode is a mesh structure;

[0007] And / or, the second ground electrode is a mesh structure.

[0008] Optionally, a limiting frame is provided at the open end, the first insulating tube is provided at the center of the limiting frame, and the limiting frame supports and fixes the second insulating tube.

[0009] Optionally, the limiting frame is a limiting net.

[0010] Optionally, a catalyst is provided on the limiting net.

[0011] Optionally, the first ground electrode includes a plurality of first electrode segments arranged at intervals;

[0012] And / or, the second ground electrode includes a plurality of second electrode segments arranged at intervals.

[0013] Optionally, the first insulating tube and / or the second insulating tube is a glass tube.

[0014] The present invention also provides an odor removal system, comprising: a shell having a gas outlet; at least two of the odor removal devices, arranged in the shell; a flow valve, arranged in the shell, the flow valve having an air inlet end and an air outlet end corresponding one-to-one to the air inlet of each of the odor removal devices, the air inlet end being connected to the outside of the shell, and each of the air outlet ends being connected to the air inlet of the corresponding odor removal device.

[0015] Optionally, a first gaseous pollutant sensor is provided on the side of the shell away from the gas outlet, and a second gaseous pollutant sensor is provided at the gas outlet. The odor removal system also includes a controller and a power supply module for supplying power to the high-voltage pole of each of the odor removal devices. A control switch is provided on the power supply circuit between each of the high-voltage poles and the power supply module. The controller is respectively communicated with the first gaseous pollutant sensor, the second gaseous pollutant sensor and the control switch.

[0016] Optionally, an air pump is further provided in the shell, one end of the air pump is connected to the outside of the shell, and the other end is connected to the air inlet end.

[0017] The technical solution of the present invention has the following advantages:

[0018] 1. The deodorization device provided by the present invention has a high-voltage electrode connected to a high-voltage power supply. The high-voltage electrode, together with the first insulating tube and the first ground electrode, forms a first plasma discharge structure. The high-voltage electrode, together with the second insulating tube and the second ground electrode, forms a second plasma discharge structure. The plasma discharge region is concentrated within the interior of the first insulating tube and the space between the first and second ground electrodes. Gas enters the interior of the first insulating tube through the air inlet, flows out of the first insulating tube's air outlet, enters the space between the second insulating tube and the first ground electrode, and finally flows out of the open end of the second insulating tube. This allows the gas to fully pass through the plasma discharge region, effectively removing harmful substances such as aldehydes, benzene, mercaptans, and ammonia from the air. The long gas path effectively prolongs the time the gas flows through the deodorization device, improving deodorization efficiency and thereby enhancing air quality, ensuring a healthy home environment and reducing respiratory diseases. This deodorization device achieves a single-pass formaldehyde removal efficiency exceeding 98% and a methyl mercaptan removal efficiency exceeding 90%, both below the human olfactory threshold.

[0019] 2. In the deodorization device provided by the present invention, the high-voltage electrode is spirally arranged. In this embodiment, the spiral arrangement of the high-voltage electrode causes current to flow through the spiral-shaped high-voltage electrode, inducing internal eddy currents that generate an axial magnetic field. This electromagnetic focusing effect enhances the high-voltage electrode's ability to confine the plasma spreading around it, thereby achieving a higher-density plasma in the axial direction of the high-voltage electrode, further improving deodorization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 A schematic diagram of an odor removal device provided in one embodiment of Example 1 of the present invention;

[0022] Figure 2 for Figure 1 A schematic diagram of the flow path of gas when the deodorization device is purifying air;

[0023] Figure 3 A schematic diagram of an odor removal device provided in another embodiment of Example 1 of the present invention;

[0024] Figure 4 This is a schematic diagram of the deodorization system provided in Example 2 of the present invention.

[0025] Description of reference numerals:

[0026] 1. First insulating tube; 101. Air inlet; 102. Air outlet; 2. High-voltage electrode; 3. First ground electrode; 301. First electrode segment; 4. Second insulating tube; 401. Closed end; 402. Open end; 5. Second ground electrode; 501. Second electrode segment; 6. Limiting net; 7. Catalyst; 8. Shell; 801. Gas outlet; 9. Flow valve; 901. Air inlet end; 902. Air outlet end; 10. Air pipe; 11. First gaseous pollutant sensor; 12. Second gaseous pollutant sensor; 13. Air pump. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0030] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0031] Example 1

[0032] High-quality air is essential for national health. In the home environment, poor ventilation, insufficient lighting, and odors from fermented garbage lead to the accumulation of harmful substances and pollutants, seriously affecting the quality of life in a healthy home.

[0033] To this end, this embodiment provides an odor removal device.

[0034] In one embodiment, Figure 1 As shown, the deodorizing device includes a first insulating tube 1 , a high voltage electrode 2 , a first ground electrode 3 , a second insulating tube 4 and a second ground electrode 5 .

[0035] Among them, the first insulating tube 1 has an air inlet 101 and an air outlet 102; the high-voltage pole 2 is arranged in the first insulating tube 1, and the high-voltage pole 2 is suitable for being connected to the high-voltage end of the power supply; the first ground electrode 3 is suitable for being grounded, and the first ground electrode 3 is arranged around the outside of the first insulating tube 1; the second insulating tube 4 is arranged around the outside of the first insulating tube 1 and has a gap between it and the first insulating tube 1, and the second insulating tube 4 has a closed end 401 and an open end 402, the closed end 401 is opposite to the air outlet 102 and is arranged at intervals, and the open end 402 is close to the air inlet 101; the second ground electrode 5 is suitable for being grounded, and the second ground electrode 5 is arranged around the outside of the second insulating tube 4.

[0036] In this embodiment, the high-voltage electrode 2 is connected to a high-voltage power supply. The high-voltage electrode 2, together with the first insulating tube 1 and the first ground electrode 3, forms a first-layer plasma discharge structure. The high-voltage electrode 2, together with the second insulating tube 4 and the second ground electrode 5, forms a second-layer plasma discharge structure. The plasma discharge region is concentrated within the interior of the first insulating tube 1 and the space between the first ground electrode 3 and the second insulating tube 4. Gas enters the first insulating tube 1 through the gas inlet 101, flows out of the gas outlet 102 of the first insulating tube 1, enters the space between the second insulating tube 4 and the first ground electrode 3, and finally exits through the open end 402 of the second insulating tube 4. This ensures that the gas fully passes through the plasma discharge region, effectively removing harmful substances such as aldehydes, benzene, mercaptans, and ammonia from the air. The longer gas path effectively prolongs the time the gas flows through the deodorization device, improving deodorization efficiency and, consequently, enhancing air quality, maintaining a healthy home environment, and reducing respiratory diseases. This deodorization device achieves a single-pass formaldehyde removal efficiency exceeding 98% and a methyl mercaptan removal efficiency exceeding 90%, both below the human olfactory threshold.

[0037] Combine Figure 1 The high-voltage pole 2 is arranged in the first insulating tube 1 and has a power connection end extending out of the first insulating tube 1 and connected to the high-voltage end of the power supply through the power connection end.

[0038] Recombination Figure 1 The air inlet 101 is arranged on the side of the first insulating tube 1 .

[0039] Based on the above embodiment, in a preferred embodiment, the high-voltage electrode 2 is arranged in a spiral shape. In this embodiment, the high-voltage electrode 2 is arranged in a spiral shape. When the current passes through the spiral high-voltage electrode 2, the internal eddy current will induce an axial magnetic field. By utilizing the electromagnetic focusing effect, the high-voltage electrode 2 enhances the confinement of the plasma diffused around it, thereby obtaining a higher density plasma in the axial direction of the high-voltage electrode 2, further improving the deodorization efficiency.

[0040] Based on the above embodiment, in a preferred embodiment, the first ground electrode 3 has a mesh structure. In this embodiment, the mesh structure of the first ground electrode 3 enables a more uniform and diffuse plasma discharge, eliminating the need to control the gap between the first ground electrode 3 and the first insulating tube 1; discharge can occur within the mesh area of ​​the first ground electrode 3. Furthermore, the mesh structure creates a visible area, facilitating detection of its operating status. In an alternative embodiment, the first ground electrode 3 has a cylindrical structure. In this embodiment, the gap between the first ground electrode 3 and the first insulating tube 1 needs to be controlled.

[0041] Based on the above embodiment, in a preferred embodiment, the second ground electrode 5 has a mesh structure. In this embodiment, the mesh structure of the second ground electrode 5 enables a more uniform and diffuse plasma discharge, eliminating the need to control the gap between the second ground electrode 5 and the second insulating tube 4; discharge can occur within the mesh area of ​​the second ground electrode 5. Furthermore, the mesh structure creates a visible area, facilitating detection of its operating status. In an alternative embodiment, the second ground electrode 5 has a cylindrical structure. In this embodiment, the gap between the second ground electrode 5 and the second insulating tube 4 needs to be controlled.

[0042] In a preferred embodiment, the first ground electrode 3 and the second ground electrode 5 are both mesh structures. In an alternative embodiment, one of the first ground electrode 3 and the second ground electrode 5 is a mesh structure, and the other is a cylindrical structure.

[0043] Based on the above embodiment, in a preferred embodiment, a retaining frame is provided at opening end 402, with first insulating tube 1 positioned at its center. The retaining frame supports and secures second insulating tube 4. In this embodiment, purified air flows out of the retaining frame at opening end 402, with first insulating tube 1 retained at its center, ensuring that first insulating tube 1 is centered throughout the deodorizing device, ensuring a stable assembly.

[0044] Based on the above embodiment, in a preferred embodiment, the limiting frame is a limiting net 6. In this embodiment, the purified air flows out of the limiting net 6 at the open end 402, and the first insulating tube 1 is restrained at the center of the limiting net 6, ensuring that the first insulating tube 1 is centered throughout the deodorizing device, ensuring stable assembly. In an alternative embodiment, the limiting frame can be a hollow bracket.

[0045] Specifically in one embodiment, the cross-sections of the first insulating tube 1 and the second insulating tube 4 are both circular, and the first insulating tube 1 and the second insulating tube 4 are coaxially arranged.

[0046] Based on the above embodiment, in a preferred embodiment, the limiting mesh 6 is a stainless steel mesh. In this embodiment, the limiting mesh 6 has a certain rigidity, thereby ensuring the position of the first insulating tube 1. Of course, in other alternative embodiments, the limiting mesh 6 can also be a plastic mesh or other metal mesh.

[0047] Based on the above embodiment, in a preferred embodiment, a catalyst 7 is provided on the limiting mesh 6. In this embodiment, the catalyst 7 can be used to adsorb excess ozone and other byproducts, thereby preventing the introduction of other pollutants while purifying the air. The type and specific components of the catalyst 7 are well known to those skilled in the art and will not be described in detail in this embodiment.

[0048] On the basis of the above embodiment, in a preferred embodiment, as Figure 3 As shown, the first ground electrode 3 includes a plurality of first electrode segments 301 spaced apart; and / or the second ground electrode 5 includes a plurality of second electrode segments 501 spaced apart. In this embodiment, the number of first electrode segments 301 and second electrode segments 501 is adjustable, and zoned and segmented discharge processing can be achieved by adjusting the length and number of the first electrode segments 301 and second electrode segments 501. The first and second ground electrodes 301 and 501 provide a path for plasma movement. A mesh of first and second electrode segments 301 and 501 can be added to the desired discharge area to control the discharge region generated there. The size of the discharge region is related to the area of ​​the first and second electrode segments 301 and 501, thereby achieving controllable discharge path.

[0049] Based on the above embodiment, in a preferred embodiment, the first insulating tube 1 and / or the second insulating tube 4 are glass tubes. Specifically, in a preferred embodiment, both the first insulating tube 1 and the second insulating tube 4 are glass tubes. The glass tubes are transparent, allowing internal discharge to be observed from the outside. In an alternative embodiment, one of the first insulating tube 1 and the second insulating tube 4 is a glass tube, and the other is a plastic or rubber tube. In another alternative embodiment, both the first insulating tube 1 and the second insulating tube 4 are plastic or rubber tubes.

[0050] The odor removal experimental results of the odor removal device provided in this embodiment are as follows:

[0051] 1) Formaldehyde removal experiment: 3m 3 Experimental design of single-cycle formaldehyde removal in cabin

[0052] In the formaldehyde removal experiment, 1 ml of 30 mg / ml formaldehyde solution is extracted with a liquid gun and uniformly pushed into the formaldehyde generator at a flow rate of 6 ml / h. Here, the formaldehyde solution can be heated and converted into formaldehyde gas. The polluted gas is Figure 2 The path shown completes the entire odor removal device, completing the treatment process. A handheld formaldehyde meter is placed near the odor removal device's outlet. With an accuracy of 0.01 ppm, it displays the formaldehyde concentration after treatment every minute. The formaldehyde treatment efficiency can be calculated based on the initial and post-treatment concentrations to characterize the odor removal device's formaldehyde removal effectiveness.

[0053] Formaldehyde removal experimental data:

[0054] Voltage Vpp / kV Inlet concentration Outlet concentration Removal rate 8 0.53—0.63 0.01 ﹥98％ 9 0.53—0.63 0 100％ 10 0.53—0.63 0 100％ 11 0.53—0.63 0 100％

[0055] 2) Deodorization experiment: Multiple cycles of trimethylamine removal experimental design

[0056] According to the national standard, the initial concentration of trimethylamine is 2-12 mg / m 3 The device was placed inside a 6L gas cylinder, and the odor removal device was placed inside a 1L sealed container. Trimethylamine gas was blown into the inlet by an air pump (at a flow rate of 2L / min), and the outlet was connected to a 6L gas cylinder. The odor removal device was connected to a high-frequency AC power source, and odor was recycled. After 10 minutes of discharge, no odor was detected by olfactory testing, indicating a treatment efficiency of over 90%.

[0057] Example 2

[0058] This embodiment provides an odor removal system.

[0059] In one embodiment, the odor removal system includes a housing 8, the odor removal devices provided in the above embodiments, and a flow-through valve 9. The housing 8 has a gas outlet 801; the odor removal devices are disposed within the housing 8; and the flow-through valve 9 is disposed within the housing 8. The flow-through valve 9 has an air inlet 901 and an air outlet 902 corresponding to the air inlet 101 of each odor removal device. The air inlet 901 communicates with the exterior of the housing 8, and each air outlet 902 communicates with the air inlet 101 of the corresponding odor removal device.

[0060] In this embodiment, by arranging at least two odor removal devices in the shell 8, the flow valve 9 can guide the gas into each odor removal device, and after purification, it flows into the shell 8 and then flows out through the gas outlet 801, thereby improving the odor removal efficiency of the odor removal system.

[0061] like Figure 4 As shown, each air outlet 902 is connected to the air inlet 101 of the corresponding deodorizing device through the air pipe 10.

[0062] Based on the above embodiment, in a preferred embodiment, a first gaseous pollutant sensor 11 is provided on the side of the housing 8 away from the gas outlet 801, and a second gaseous pollutant sensor 12 is provided at the gas outlet 801. The deodorization system also includes a controller and a power module for supplying power to the high-voltage pole 2 of each deodorization device. A control switch is provided on the power supply circuit between each high-voltage pole 2 and the power module. The controller is respectively connected to the first gaseous pollutant sensor 11, the second gaseous pollutant sensor 12, and the control switch. In this embodiment, the controller is respectively connected to each control switch, so it can control whether each deodorization device is working, and select the number of deodorization devices that need to be controlled in combination with the detection data of the first gaseous pollutant sensor 11 and the second gaseous pollutant sensor 12.

[0063] Specifically in one embodiment, Figure 4As shown, a total of five odor removal devices are installed in the housing 8. These five odor removal devices are respectively No. 1 odor removal device, No. 2 odor removal device, No. 3 odor removal device, No. 4 odor removal device, and No. 5 odor removal device. Different operating gears can be selected for odor removal based on the readings of the first gaseous pollutant sensor 11 and the second gaseous pollutant sensor 12. When the reading of the first gaseous pollutant sensor 11 is ≥ 200 or the reading of the second gaseous pollutant sensor 12 is ≥ 200, all five odor removal devices operate. Once the readings of the first gaseous pollutant sensor 11 and the second gaseous pollutant sensor 12 are both < 160, the instruction "Disconnect No. 5 odor removal device, and keep the other operating states unchanged" is executed. The system then continues to determine if both the readings of the first and second gaseous pollutant sensors 11 and 12 are less than 120. The system then executes the command "disconnect odor removal devices 4 and 5, leaving all other operating states unchanged." If both the readings of the first and second gaseous pollutant sensors 11 and 12 are less than 80, the system then executes the command "disconnect odor removal devices 3, 4, and 5, leaving all other operating states unchanged." If both the readings of the first and second gaseous pollutant sensors 11 and 12 are less than 40, the system then executes the command "disconnect odor removal devices 2, 3, 4, and 5, leaving only odor removal device 1 operational." The system terminates operation and the user shuts down the system until the reading of the first gaseous pollutant sensor 11 is less than 40 and the difference between the readings of the first and second gaseous pollutant sensors 11 and 12 is less than 10.

[0064] Based on the above embodiment, in a preferred embodiment, an air pump 13 is further provided in the housing 8, one end of the air pump 13 being connected to the exterior of the housing 8, and the other end being connected to the air inlet 901. In this embodiment, the air pump 13 can cause the gas to flow toward the flow valve 9, and then flow through the flow valve 9 to the various deodorizing devices.

[0065] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A deodorization system, characterized in that: include: A housing (8) having a gas outlet (801); At least two deodorizing devices, each comprising: a first insulating tube (1) having an air inlet (101) and an air outlet (102); A high-voltage electrode (2) is arranged in the first insulating tube (1), and the high-voltage electrode (2) is suitable for being connected to the high-voltage end of a power supply; a first ground electrode (3) is suitable for being grounded, and the first ground electrode (3) is arranged around the outside of the first insulating tube (1); a second insulating tube (4) is arranged around the outside of the first insulating tube (1) and has a gap with the first insulating tube (1), and the second insulating tube (4) has a closed end (401) and an open end (402), the closed end (401) is opposite to the air outlet (102) and is arranged at intervals, and the open end (402) is close to the air inlet (101); a second ground electrode (5) is suitable for being grounded, and the second ground electrode (5) is arranged around the outside of the second insulating tube (4); A flow-through valve (9) is arranged in the housing (8), the flow-through valve (9) having an air inlet end (901) and an air outlet end (902) corresponding one-to-one to the air inlet (101) of each of the deodorizing devices, the air inlet end (901) being in communication with the outside of the housing (8), and each of the air outlet ends (902) being in communication with the air inlet (101) of the corresponding deodorizing device; A first gaseous pollutant sensor (11) is provided on a side of the housing (8) away from the gas outlet (801), and a second gaseous pollutant sensor (12) is provided at the gas outlet (801). The deodorization system further comprises a controller and a power supply module for supplying power to the high-voltage pole (2) of each of the deodorization devices. A control switch is provided on the power supply circuit between each of the high-voltage poles (2) and the power supply module. The controller is respectively connected to the first gaseous pollutant sensor (11), the second gaseous pollutant sensor (12) and the control switch for communication.

2. The deodorization system according to claim 1, characterized in that: The high voltage pole (2) is arranged in a spiral shape.

3. The deodorization system according to claim 1, characterized in that: The first ground electrode (3) is a mesh structure; And / or, the second ground electrode (5) is a mesh structure.

4. The deodorization system according to any one of claims 1 to 3, characterized in that: A limiting frame is provided at the open end (402), the first insulating tube (1) is provided at the center of the limiting frame, and the limiting frame supports and fixes the second insulating tube (4).

5. The deodorization system according to claim 4, characterized in that: The limiting frame is a limiting net (6).

6. The deodorization system according to claim 5, characterized in that: A catalyst (7) is provided on the limiting net (6).

7. The deodorization system according to any one of claims 1 to 3, characterized in that: The first ground electrode (3) comprises a plurality of first electrode segments (301) arranged at intervals; And / or, the second ground electrode (5) comprises a plurality of second electrode segments (501) arranged at intervals.

8. The deodorization system according to any one of claims 1 to 3, characterized in that: The first insulating tube (1) and / or the second insulating tube (4) are glass tubes.

9. The deodorization system according to claim 1, characterized in that: An air pump (13) is also provided in the housing (8), one end of the air pump (13) is in communication with the outside of the housing (8), and the other end is in communication with the air inlet end (901).

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