CN216746987U - Flat plate type ion collector - Google Patents
Flat plate type ion collector Download PDFInfo
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- CN216746987U CN216746987U CN202122460280.2U CN202122460280U CN216746987U CN 216746987 U CN216746987 U CN 216746987U CN 202122460280 U CN202122460280 U CN 202122460280U CN 216746987 U CN216746987 U CN 216746987U
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Abstract
The utility model provides a flat-plate type ion collector, aiming at solving the problem that the laminar flow characteristic of airflow in a channel of the ion collector is uneven, so that the negative/positive ion collection efficiency is influenced. The flat plate type ion collector comprises a tubular through shell body formed by sequentially connecting an outer shell body, a connecting shell and a fan shell, wherein the lower end of the tubular through shell body is provided with a mounting seat for fixing the collector, the free end of the outer shell body is an air inlet end, an air inlet flow guide grid for guiding flow is arranged on the air inlet end, a plurality of polarization plates which are arranged in parallel are fixed on the inner wall of the joint of the outer shell body and the connecting shell through polarization plate seats, and a gap for flowing air to pass through is formed between every two adjacent polarization plates. The utility model is especially suitable for uniformly and stably collecting negative/positive ions, and has higher social use value and application prospect.
Description
Technical Field
The utility model relates to the technical field of ion collection, in particular to a flat plate type ion collector.
Background
The concentration of negative oxygen ions in the air is one of the signs of the quality of the air, represents the freshness of the air, is a positive index for judging the quality of local human habitation environment, and is closely related to ecological environment protection and quality of life of people. Monitoring and evaluation of negative oxygen ions is one of important ecological service products of natural ecosystems, and has become a hotspot concerned by governments at all levels and public society. The aerobic ion monitoring and evaluating work is of great significance for promoting the ecological civilization construction in China.
The laminar flow characteristics of the airflow in the channel of the existing ion collector are uneven, and the negative/positive ion collection efficiency is influenced. To this end, we propose a flat plate ion collector.
SUMMERY OF THE UTILITY MODEL
It is an object of the present invention to solve or at least alleviate problems in the prior art.
The utility model provides a flat plate type ion collector, which comprises a tubular through shell formed by sequentially connecting an outer shell, a connecting shell and a fan shell, wherein the lower end of the tubular through shell is provided with a mounting seat for fixing the collector, the free end of the outer shell is an air inlet end, an air inlet flow guide grid for flow guide is arranged on the air inlet end, a plurality of polarization plates which are arranged in parallel are fixed on the inner wall of the joint of the outer shell and the connecting shell through polarization plate seats, the arrangement direction of the polarization plates is consistent with the air circulation direction, and a gap for flowing air to pass through is formed between the adjacent polarization plates;
the free end of the fan shell is an air outlet end, and a fan which is used for driving air to enter from the air inlet end, pass through gaps among the plurality of polarized plates and flow out from the air outlet end is installed in the fan shell.
Optionally, the outer side of the air inlet flow guiding grid is of a horn-shaped structure which is shrunk inwards from the edge and used for primary flow guiding.
Optionally, the inner side of the air inlet flow guide grid is of a planar grid structure perpendicular to the air inlet direction and used for secondary flow guide.
Optionally, the polarization plates are arranged in parallel in a non-contact manner in an inner cavity of the outer shell, a gap between adjacent polarization plates is 0.5 cm-1.5 cm, and a plurality of parallel gaps are used for three-time flow guiding.
Optionally, an air exhaust grid is installed on the air outlet end.
Optionally, a power supply terminal electrically connected with the polarization plate is arranged in the mounting seat.
The embodiment of the utility model provides a flat-plate type ion collector, which has the following beneficial effects:
1. the flat-plate ion collector has the advantages of small quiescent current, low capacitance, short response time, low reynolds number of collected airflow, stability and uniformity and stable polarization voltage.
2. When the fan is started, air containing negative/positive ions flows into gaps among the plurality of started polarization plates after being guided from the air inlet end, flows out from the air outlet end through the flow guide of the connecting shell and the fan shell, is stable and smooth due to the flow guide of the air inlet end, is small in air turbulence, and continuously collects the negative/positive ions of the air.
3. The fan rotating speed of the flat-plate type ion collector is adjustable, so that the ventilation speed is adjusted, and the collected air flow is ensured to be constant; different voltages of the polarizing plates are applied through the terminal of the collector, so that stable electric fields with different strengths are formed, and air ions with different particle sizes are collected.
4. The voltage polarity of the polarizing plate of the flat-plate type ion collector is adjustable, and positive ions or negative ions in air are selectively collected.
Drawings
The above features, technical features, advantages and implementations of the flat plate ion collector will be further described in the following detailed description of preferred embodiments in a clearly understandable manner with reference to the accompanying drawings.
FIG. 1 is a perspective view of the structure of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a left side view of the structure of the present invention;
fig. 4 is a sectional view of the internal structure of the present invention.
In the figure: the air conditioner comprises an outer shell 1, a connecting shell 2, a fan shell 3, a fan 4, a polarizing plate seat 5, an air inlet guide grid 6, a polarizing plate 7, a mounting seat 8, a power supply binding post 801, a voltage binding post 802, a current binding post 803 and an air exhaust grid 9.
Detailed Description
The utility model will be further illustrated with reference to the following figures 1-4 and examples:
example 1
The utility model provides a flat-plate type ion collector, as shown in figures 1-3, which comprises a tubular through shell formed by sequentially connecting an outer shell 1, a connecting shell 2 and a fan shell 3, wherein the lower end of the tubular through shell is provided with a mounting seat 8 for fixing the collector, the free end of the outer shell 1 is an air inlet end, the air inlet end is provided with an air inlet guide grid 6 for guiding air, the inner wall of the joint of the outer shell 1 and the connecting shell 2 is fixedly provided with a plurality of polarization plates 7 which are arranged in parallel through polarization plate seats 5, the arrangement direction of the polarization plates 7 is consistent with the air circulation direction, gaps for flowing air to pass through are formed between the polarization plates 7, and after the polarization plates 7 are connected with a power supply, the flowing air passing through the gaps is discharged through a corona discharge method to generate high-content gaseous negative/positive ions;
the free end of the fan shell 3 is an air outlet end, an air exhaust grid 9 is arranged on the air outlet end, and a fan 4 which is used for driving air to enter from the air inlet end, pass through gaps among a plurality of polarizing plates 7 and flow out from the air outlet end is arranged in the fan shell 3;
in this embodiment, fan 4 starts, and the air that contains the anion gets into the space between the a plurality of polarization board 7 after the start-up after the end water conservancy diversion of air inlet from, through the water conservancy diversion of connecting shell 2 and fan shell 3, flows out from the air-out end, and the water conservancy diversion of air inlet end makes the air stable smooth, and the air turbulence is little, continuously collects air anion. It can be understood that when detecting negative ions, the collector is a negative ion collector, and when detecting positive ions, the collector is a positive ion collector, and the characteristics of the positive and negative ion fields are the same;
meanwhile, the rotating speed of the fan 4 is adjustable, and it can be understood that the collected air flow is ensured to be constant by adjusting the rotating speed of the fan 4.
In this embodiment, as shown in fig. 2, the outer side of the air inlet flow guiding grid 6 is a trumpet-shaped structure which is contracted inwards from the edge and is used for primary flow guiding; the inner side of the air inlet flow guide grid 6 is of a plane grid structure vertical to the air inlet direction and used for secondary flow guide, and air entering the tubular through shell from the air inlet end is stable and smooth through primary flow guide and secondary flow guide.
In this embodiment, as shown in fig. 2, the polarization plates 7 are arranged in parallel in a non-contact manner in the inner cavity of the outer housing 1, the distance between adjacent polarization plates 7 is 0.5cm to 1.5cm, and a plurality of parallel gaps are used for three-time flow guiding, so that stable and smooth air is ensured, and the negative/positive fields are uniform and stable.
In this embodiment, the polarizer plate seat 5 is made of a high-insulation teflon material, the polarizer plate 7 is made of a conductive material, and the rest of the materials are made of metals, so that when the ion collector is operated, after polarization voltage is applied, leakage current is very small, i.e., the flat plate type ion collector in this embodiment has a characteristic of small quiescent current.
Example 2
The difference between this embodiment and embodiment 1 is that, as shown in fig. 2, a power supply terminal 801 electrically connected to the polarization plate 7 is disposed in the mounting base 8, and two voltage terminals 802 and one current terminal 803 are also disposed at the bottom of the mounting base 8, so as to ensure the electrical connection between the polarization plate 7 and the fan 4, hide the circuit, and ensure the safety and the beauty of the equipment.
Other undescribed structures refer to example 1.
In this example, a flat plate ion collector was fabricated with reference to table 1:
TABLE 1
Thereby, the measurement characteristic analysis of the flat plate type ion collector was performed:
1) output current conversion to negative/positive ion concentration measurement
Calculating the negative/positive ion concentration of the flat plate type ion collector according to the formula (1):
n is the concentration of negative/positive ions (number/cm)3) Where I is the measured current (A) and q is the basic charge (about 1.6X 10)- 19C) And M is the collected air flow (cm)3In s). The flat-plate type ion collector in this embodiment,
in the formula: (I is given in fA), so K is 6.32ions/(fA · cm 3).
2) Polarization voltage configuration measurement
Similarly, the polarization voltage can be calculated according to the mobility limit formula, which is shown in formula (2),
in the formula: l is the polar plate length of polarising plate 7, and d is the interval between polarising plate 7 and shell body 1, and air velocity is Vx, and polarization voltage is U. The limiting mobility is taken as 0.4cm2V.s, calculated according to the technical parameters in table 1, the flow measurement results and the conversion coefficients are shown in table 2:
| instrument model/number | Air flow (m)3/h) | Conversion factor K | Polarization voltage (V) |
| Flat plate type ion collector | 4.07 | 6.32 | 17.20 |
TABLE 2
It can be seen that the plate-type ion collector in this embodiment has a stable polarization voltage.
3) Collecting air flow characteristic measurements
According to the ion measurement principle, the laminar flow structure of the airflow containing ions needs to be kept in the electric field of the collector, and the flow velocity is uniform.
Reynolds number (Reynolds number) may be used to characterize fluid flow. The reynolds number can be used to distinguish whether the flow of the fluid is laminar or turbulent and can also be used to determine the resistance to flow of the object in the fluid. The Reynolds number is the basis for judging the flow characteristics, in the pipe flow, the flow with the Reynolds number smaller than 2300 is laminar flow, the Reynolds number equal to 2300-4000 is in a transition state, and the flow with the Reynolds number larger than 4000 is turbulent flow.
The calculation formula is shown in formula (3):
Re＝ρvd/μ (3)
wherein v, rho and mu are respectively the flow velocity, density and viscosity coefficient of the fluid, d is a characteristic length, and d is the equivalent diameter of the pipeline when the fluid flows through the circular pipeline.
For a flat plate ion collector, the spacing b between adjacent polarizing plates 7 is 0.007m, d is 2b, the flow rate is about 1m/s, and the reynolds number is:
according to the structure, the airflow pipelines are of a parallel structure, and the flow velocity on each cross section is uniform, so that the laminar flow property of the airflow in the flat-plate ion collector is good.
4) Capacitance measurement
In the flat-plate ion collector, the length of each polarizing plate 7 is 68mm, the width of each polarizing plate is 37mm, the distance b between adjacent polarizing plates 7 is 7mm, in this embodiment, the number of the polarizing plates 7 is 5, a parallel connection mode equivalent to 4 capacitors is formed, and capacitance values are added, that is:
the flat-plate type ion collector of the embodiment has small capacitance and short charging and discharging time, and if the micro-current meter sampling resistor is 100G, the charging and discharging time constant is about 1.3s, so that the change condition of negative/positive ions can be well responded.
The flat-plate ion collector according to the embodiment of the utility model has the advantages of small quiescent current, low capacitance, short response time, low reynolds number of collected airflow, stability and uniformity and stable polarization voltage.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. A flat-plate type ion collector comprises a tubular through shell formed by sequentially connecting an outer shell (1), a connecting shell (2) and a fan shell (3), wherein the lower end of the tubular through shell is provided with a mounting seat (8) for fixing the collector, and the flat-plate type ion collector is characterized in that the free end of the outer shell (1) is an air inlet end which is provided with an air inlet diversion grid (6) for diversion, the inner wall of the joint of the outer shell (1) and the connecting shell (2) is fixed with a plurality of polarization plates (7) which are arranged in parallel through polarization plate seats (5), the arrangement direction of the polarization plates (7) is consistent with the air circulation direction, and a gap for flowing air to pass through is formed between the adjacent polarization plates (7);
the free end of the fan shell (3) is an air outlet end, and a fan (4) which is used for driving air to enter from an air inlet end, pass through gaps among the plurality of polarization plates (7) and flow out from the air outlet end is installed in the fan shell (3).
2. The flat plate ion collector of claim 1, wherein: the outside of air inlet water conservancy diversion grid (6) is for the tubaeform structure of the edge internal contraction for first water conservancy diversion.
3. The flat plate ion collector of claim 2, wherein: the inner side of the air inlet flow guide grid (6) is of a plane grid structure vertical to the air inlet direction and used for secondary flow guide.
4. The flat plate ion collector of claim 1, wherein: the polarization plates (7) are arranged in the inner cavity of the outer shell (1) in a non-contact parallel mode, gaps between every two adjacent polarization plates (7) are 0.5 cm-1.5 cm, and a plurality of parallel gaps are used for three-time flow guiding.
5. The flat plate ion collector of claim 1, wherein: and an air exhaust grid (9) is arranged on the air outlet end.
6. The flat plate ion collector of claim 1, wherein: and a power supply wiring terminal (801) electrically connected with the polarization plate (7) is arranged in the mounting seat (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122460280.2U CN216746987U (en) | 2021-10-12 | 2021-10-12 | Flat plate type ion collector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122460280.2U CN216746987U (en) | 2021-10-12 | 2021-10-12 | Flat plate type ion collector |
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| CN216746987U true CN216746987U (en) | 2022-06-14 |
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| CN202122460280.2U Active CN216746987U (en) | 2021-10-12 | 2021-10-12 | Flat plate type ion collector |
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