Microneedle active fog ion generation device and control method

Abstract

The application provides a microneedle active mist ion generating device and a control method. The device comprises a substrate, a heat dissipation support column fixedly connected with the edge of the substrate, an electrode plate arranged at the end of the heat dissipation support column, a refrigeration unit, a heat release end of the refrigeration unit being fixedly connected with the substrate, a discharge microneedle plate fixedly connected with the refrigeration end of the refrigeration unit, the discharge microneedle plate and the electrode plate forming a high-voltage discharge electric field, first and second support columns fixedly connected with the substrate, the first and second support columns being located on the two sides of the discharge microneedle plate, and a blocking piece fixedly connected between the first and second support columns and located above the discharge microneedle plate. The microneedle active mist ion generating device can store condensed water and prevent the generation of ozone in a low humidity environment, thereby improving the disinfection effect of the device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air sterilization, in particular to a microneedle active fog ion generating device and a control method. BACKGROUND

[0002] Active fog ions are nanoscale water mists with good biological activity, which can strongly wrap bacteria, and the active free radicals and negative oxygen ions carried by the active fog ions can change the proteins of the bacteria, destroy the cell membranes and RNA structures of pathogenic microorganisms, and inactivate the bacteria. In recent years, the application of active fog ions has also attracted more and more attention.

[0003] In the prior art, active fog ions are obtained by an electrochemical generating device, and the active fog ion generating device includes an upper electrode and a lower electrode. A temperature difference is generated between the lower electrode and the surrounding environment, so that the moisture in the air condenses on the lower electrode. When power is applied, the upper and lower electrodes are broken down by high voltage, and the condensed water condensed on the lower electrode is also broken down, thereby generating active fog ion particles.

[0004] The prior art at least has the following defects: when the amount of condensed water condensed on the microneedle plate is too much, the condensed water cannot be stored, causing waste; and when the environment is dry, air breakdown phenomenon occurs, ozone is generated, and the sterilization effect of the device is weakened. SUMMARY

[0005] The present application provides a microneedle active fog ion generating device and a control method to solve the problems of condensate water storage and reduced sterilization effect under low humidity conditions.

[0006] To solve the above technical problems, the technical solutions of the present application are as follows:

[0007] A microneedle active fog ion generating device, comprising:

[0008] a substrate;

[0009] a heat dissipation support column fixedly connected to the edge of the substrate;

[0010] an electrode plate arranged at the end of the heat dissipation support column;

[0011] a refrigeration unit, the heat dissipation end of the refrigeration unit being fixedly connected to the substrate;

[0012] a discharge microneedle plate fixedly connected to the refrigeration end of the refrigeration unit, the discharge microneedle plate and the electrode plate forming a high-voltage discharge electric field;

[0013] a first support column and a second support column are fixedly connected to the substrate, and the first support column and the second support column are located on both sides of the discharge microneedle plate;

[0014] The first support column and the second support column are fixedly connected with a barrier made of a hydrophilic material, and the barrier is located above the discharge microneedle plate.

[0015] Optionally, the barrier is a sponge structure, and the barrier is provided with a through hole.

[0016] Optionally, the substrate is fixedly connected with at least two insulating barriers; the at least two insulating barriers extend from the substrate to the electrode plate, and the height is greater than or equal to the height of the refrigeration unit.

[0017] Optionally, a first insulating barrier in the at least two insulating barriers is arranged between the heat dissipation support column and the first support column.

[0018] A second insulating barrier is arranged between the heat dissipation support column and the second support column.

[0019] Optionally, the end surface of the first insulating barrier and the second insulating barrier is provided with a groove, suitable for storing condensed water.

[0020] Optionally, the surface of the substrate is provided with a solder resist layer.

[0021] Optionally, the discharge microneedle plate is electrically connected with a temperature sensor.

[0022] Optionally, the substrate is fixedly connected with a wiring terminal, and the wiring terminal is connected with the refrigeration unit through a wire.

[0023] Optionally, the refrigeration unit, the wire and the temperature sensor are covered by insulating glue.

[0024] The application also provides a control method of the microneedle active fog ion generating device.

[0025] After the discharge microneedle plate and the electrode plate are powered on, the controller obtains the current working temperature of the substrate when the active fog ions generated by the discharge microneedle plate.

[0026] The controller obtains a temperature difference value according to the current working temperature of the substrate and a working temperature threshold value.

[0027] The controller controls the refrigeration power of the refrigeration unit 4 according to the temperature difference value.

[0028] The above-mentioned scheme of the application at least has the following beneficial effects:

[0029] The scheme of the application comprises: a substrate; a heat dissipation support column fixedly connected with the edge of the substrate; an electrode plate arranged at the end of the heat dissipation support column; a refrigeration unit, the heat release end of the refrigeration unit being fixedly connected with the substrate; a discharge microneedle plate fixedly connected with the refrigeration end of the refrigeration unit, the discharge microneedle plate and the electrode plate forming a high-voltage discharge electric field; the first support column and the second support column are fixedly connected with the substrate, and the first support column and the second support column are located on both sides of the discharge microneedle plate; the blocking piece is fixedly connected between the first support column and the second support column, and the blocking piece is located above the discharge microneedle plate. The scheme of the application can store condensed water through the blocking piece made of hydrophilic material, and hinder the discharge process of the electrode plate and the discharge microneedle plate in a low humidity environment, thereby preventing the generation of ozone. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is the structure front view of the microneedle active mist ion generating device provided by the embodiment of the application;

[0031] Figure 2 is the structure top view of the microneedle active mist ion generating device provided by the embodiment of the application;

[0032] Figure 3 is the structure schematic view of the blocking piece provided by the embodiment of the application;

[0033] Figure 4 is the structure schematic view of the insulating glue provided by the embodiment of the application;

[0034] Figure 5 is the schematic view of the control module of the microneedle active mist ion generating device provided by the embodiment of the application.

[0035] BRIEF DESCRIPTION OF DRAWINGS:

[0036] 1, substrate; 111, first insulating blocking piece, 112, second insulating blocking piece; 12, solder mask layer; 13, terminal; 2, heat dissipation support column; 3, electrode plate; 31, air outlet; 4, refrigeration unit; 5, discharge microneedle plate; 61, first support column; 62, second support column; 7, blocking piece; 71, through hole; 8, wire; 9, temperature sensor; 10, insulating glue. DETAILED DESCRIPTION

[0037] Exemplary embodiments of the present disclosure will be described in greater detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be accurately conveyed to those skilled in the art.

[0038] As Figure 1 shown, the embodiment of the present application proposes a microneedle active fog ion generating device, comprising:

[0039] a substrate 1;

[0040] a heat dissipation support column 2 fixedly connected with the edge of the substrate 1;

[0041] an electrode plate 3 arranged at the end of the heat dissipation support column 2;

[0042] a refrigeration unit 4, the heat releasing end of which is fixedly connected with the substrate 1;

[0043] a discharge microneedle plate 5 fixedly connected with the refrigeration end of the refrigeration unit 4, which forms a high-voltage discharge electric field with the electrode plate 3;

[0044] the first support column 61 and the second support column 62 are fixedly connected with the substrate 1, and are located on both sides of the discharge microneedle plate 5;

[0045] a blocking piece 7 made of hydrophilic material is fixedly connected between the first support column 61 and the second support column 62, and is located above the discharge microneedle plate 5.

[0046] In this embodiment, the heat dissipation support column 2 is integrally formed with the electrode plate 3;

[0047] the substrate 1, the heat dissipation support column 2, the refrigeration unit 4 and the discharge microneedle plate 5 can be connected by welding, which can greatly reduce the gap on the connecting surface of the two structures, while screws, stamping and mortise joints are easily affected by the deformation of the heat dissipation support column 2 when connected, resulting in gaps on the connecting surface and reducing the heat transfer efficiency;

[0048] the heat dissipation support column 2 is made of metal material, which has the dual functions of heat dissipation and electrical conductivity;

[0049] the substrate 1 is made of heat-conducting insulating ceramic material, which improves the heat dissipation efficiency of the device and further improves the release amount of active fog ions.

[0050] In this embodiment, the discharge microneedle plate 5 is fixed at the refrigeration end of the refrigeration unit 4, which provides cold energy for the discharge microneedle plate 5, and further causes the water vapor in the air to condense into droplets on the discharge microneedle plate 5;

[0051] the discharge microneedle plate 5 forms a high-voltage discharge electric field with the electrode plate 3, and the condensed water on the discharge microneedle plate 5 is broken down in the high-voltage discharge electric field to form active fog ions;

[0052] The refrigeration unit 4 can be one pair or multiple pairs.

[0053] In this embodiment, the blocking piece 7 is arranged above the discharge micro-needle plate 5, and the blocking piece 7 is not fixedly connected with the discharge micro-needle plate 5.

[0054] The substrate 1, the blocking piece 7, the first supporting column 61 and the second supporting column 62 are connected by welding or bonding.

[0055] In an optional embodiment of the present application, the blocking piece 7 is a sponge structure, and the blocking piece 7 is provided with a through hole 71.

[0056] In this embodiment, as shown in Figure 3 The blocking piece 7 is made of a material with hydrophilicity.

[0057] When the water vapor in the air condenses into droplets on the discharge micro-needle plate 5, the droplets will enter the through hole 71 of the blocking piece 7 for storage under the attraction of the hydrophilicity of the blocking piece 7, solving the storage problem of liquid when the condensate is too much.

[0058] At the same time, when the environment is normal condensation, the electrode plate 3 and the discharge micro-needle plate 5 complete discharge through the water in the blocking piece 7, releasing active fog ions into the environment.

[0059] When the environment is dry and difficult to condense water, the blocking piece 7 hinders the discharge process of the electrode plate 3 and the discharge micro-needle plate 5, hinders the generation of the breakdown of air, and prevents the generation of ozone. At this time, the device is in a dielectric barrier discharge state, starts to generate plasma, and solves the problems of easy generation of ozone and weakening of disinfection effect of the traditional device in a low humidity condition.

[0060] In an optional embodiment of the present application, the substrate 1 is fixedly connected with at least two insulating blocking pieces; the at least two insulating blocking pieces extend from the substrate 1 to the electrode plate 3, and the height is greater than or equal to the height of the refrigeration unit 4.

[0061] In an optional embodiment of the present application, a first insulating blocking piece 111 of the at least two insulating blocking pieces is arranged between the heat dissipation supporting column 2 and the first supporting column 61.

[0062] A second insulating blocking piece 112 is arranged between the heat dissipation supporting column 2 and the second supporting column 62.

[0063] In the above embodiment, as shown in Figure 1 and Figure 2 Two insulating blocking pieces are arranged between the heat dissipation supporting column 2 and the discharge micro-needle plate 5.

[0064] The discharge microneedle plate 5 is closest to the air outlet 31, and the air resistance is minimum, so the discharge phenomenon occurs, and active mist ions are generated;

[0065] The condensed water on the discharge microneedle plate 5 slides from the bottom plate to the substrate 1, and due to the intervention of the water, the air distance between the bottom plate of the discharge microneedle plate 5 and the bottom of the heat dissipation support column 2 is greatly reduced, and even the two are directly connected with each other, thereby causing the occurrence of unintended discharge. By arranging the insulation barrier, the occurrence of the above unintended discharge can be prevented.

[0066] In an optional embodiment of the present application, recesses are arranged on the end faces of the first insulation barrier 111 and the second insulation barrier 112, and the recesses are suitable for storing condensed water.

[0067] In the embodiment, the first insulation barrier 111 and the second insulation barrier 112 can be plate-shaped or cylindrical in structure.

[0068] The end face of the insulation barrier in plate-shaped structure is provided with recesses, and a certain amount of condensed water can be stored in the recesses.

[0069] The insulation barrier in cylindrical structure can store condensed water that has not been consumed, and in addition, when the device is used upside down after being rotated by 180 degrees, the liquid in the cylinder will not flow out of the cylinder due to the effect of surface tension. Compared with the traditional device, the problem that condensed water is easily affected by gravity and directly slides from the condenser and is prone to produce ozone due to water shortage when the device is used upside down is solved.

[0070] In an optional embodiment of the present application, a solder resist layer 12 is arranged on the surface of the substrate 1.

[0071] In the embodiment, the solder resist layer 12 is solder resist ink sprayed on the surface of the substrate 1, which plays an insulating role, prevents short circuit caused by welding, and also avoids insulation deterioration and corrosion caused by dust, moisture and other factors.

[0072] In an optional embodiment of the present application, an air outlet 31 is arranged on the electrode plate 3.

[0073] In the embodiment, the air outlet 31 arranged on the electrode plate 3 is mainly used for releasing active mist ions generated by ionization.

[0074] The shape of the air outlet 31 is not limited, and the air outlet 31 can be arranged in a grid shape, a mesh shape or a circular shape.

[0075] In an optional embodiment of the present application, a wiring terminal 13 is fixedly connected to the substrate 1, and the wiring terminal 13 is connected to the refrigeration unit 4 through a wire 8.

[0076] In the embodiment, the wiring terminal 13 is fixedly connected with the substrate 1 by welding or bonding, provides an interface for circuit connection of the internal device, avoids welding of the power line and the device, and facilitates disassembly of the device.

[0077] The refrigeration unit 4 and the temperature sensor 9 are connected with an external power supply through the wiring terminal 13, and power supply is realized.

[0078] The wire 8 is a copper film wire or a gold-plated copper film wire, and is used for electrical connection of the refrigeration unit 4, the temperature sensor 9 and the wiring terminal 13.

[0079] In an optional embodiment of the application, the discharge micro-needle plate 5 is electrically connected with a temperature sensor 9.

[0080] In the embodiment, the temperature sensor 9 can use a thermistor or other electronic components that can be used for temperature measurement.

[0081] The temperature sensor 9 and the discharge micro-needle plate 5 can be connected by welding or bonding, or can be electrically connected.

[0082] The temperature sensor 9 is electrically connected with an external controller through the wiring terminal 13, the temperature sensor 9 measures the temperature of the discharge micro-needle plate 5 in real time, and transmits data to the controller, and the controller controls the refrigeration power of the refrigeration unit 4 according to the temperature of the discharge micro-needle plate 5.

[0083] In an optional embodiment of the application, the refrigeration unit 4, the wire 8 and the temperature sensor 9 are covered by the insulating glue 10.

[0084] In the embodiment, the insulating glue 10 completely covers the refrigeration unit 4, the temperature sensor 9 and the wire 8, and is isolated from other circuits.

[0085] The embodiment of the application also provides a control method of the micro-needle active mist ion generating device, which is used for controlling the micro-needle active mist ion generating device in the above embodiment, and includes the following steps.

[0086] Step 1, after the discharge micro-needle plate 5 and the electrode plate 3 are powered on, the controller obtains a current working temperature of the substrate 1 when the active mist ions generated by the discharge micro-needle plate 5.

[0087] Step 2, the controller obtains a temperature difference value according to the current working temperature of the substrate 1 and a working temperature threshold.

[0088] Step 3, the controller controls the refrigeration power of the refrigeration unit 4 according to the temperature difference value.

[0089] In implementation, step 1 can include:

[0090] In step 11, the controller acquires the load voltage U1 and the current I1 of the thermistor in the temperature sensor 9,

[0091] The current resistance value of the thermistor is calculated by the formula:

[0092]

[0093] Wherein, R1 is the current resistance value of the thermistor; U1 is the load voltage of the thermistor; I1 is the load current of the thermistor.

[0094] In the embodiment, the temperature sensor 9 uses a thermistor as a temperature measuring element, which has high sensitivity and can work in a small temperature range, and can accurately obtain the current resistance value of the thermistor.

[0095] In step 12, the current working temperature is calculated by the following formula:

[0096]

[0097] Wherein, R1 is the current resistance value of the thermistor at T1 temperature; R2 is the nominal resistance value of the thermistor at T2 temperature; T2 is 25℃; B is the temperature coefficient; T1 is the current working temperature of the substrate.

[0098] In the embodiment, T2 is generally set to 25℃, and can also be set to other temperature values according to the working requirements; the nominal resistance value R2 and the temperature coefficient B can be obtained by querying the datasheet of the thermistor; only the current resistance value R1 of the thermistor needs to be measured, and the current working temperature T1 of the substrate can be calculated by the above formula, which is simple, needs to measure less, and has higher accuracy.

[0099] Step 2 can include:

[0100] The working temperature threshold T0 is determined, which is optionally a preset value, and is preset to 25℃;

[0101] The temperature difference is obtained by the following formula:

[0102] ΔT = T1 - T0

[0103] Wherein, ΔT is the temperature difference; T1 is the current working temperature of the heat-conducting insulating ceramic; T0 is the working temperature threshold.

[0104] Step 3 can include:

[0105] In step 31, when the temperature difference is greater than 0, the refrigeration power is increased;

[0106] Specifically, when ΔT>0, the controller increases the working current of the refrigeration unit, and further increases the working power of the refrigeration unit; wherein the increase rate of the working efficiency ranges from 0% to 300%.

[0107] Step 32, when the temperature difference is less than or equal to 0, the refrigeration power is reduced.

[0108] Specifically, when ΔT≤0, the controller reduces the working current of the refrigeration unit, and further reduces the working power of the refrigeration unit; wherein the decrease rate of the working efficiency ranges from 0% to 100%.

[0109] In an optional embodiment of the application, after step 13, the control method of the microneedle active fog ion generating device further comprises step 14:

[0110] Step 141, the controller acquires the real-time working temperature of the substrate 1 every interval of a preset time;

[0111] Step 142, the refrigeration power of the refrigeration unit 4 is controlled in real time according to the real-time working temperature of the substrate 1.

[0112] Specifically, the controller acquires the load voltage and current of the thermistor in the temperature sensor 9 every 10-1000 seconds, calculates the current resistance value of the thermistor, and calculates the current working temperature T1 of the substrate 1 according to the current resistance value;

[0113] The temperature difference ΔT is calculated according to the current working temperature T1 of the substrate 1 and the working temperature threshold T0.

[0114] When ΔT>0, the controller increases the working current of the refrigeration unit, and further increases the working power of the refrigeration unit; when ΔT≤0, the controller reduces the working current of the refrigeration unit, and further reduces the working power of the refrigeration unit.

[0115] In this embodiment, the controller can intelligently control the working power of the refrigeration unit, and perform real-time power regulation, so that the refrigeration unit is always at the optimal working temperature, and the working efficiency of the microneedle active fog ion generating device is improved.

[0116] The microneedle active fog ion generating device and the control method can store condensed water, prevent ozone from being generated in a low humidity environment, improve the disinfection effect of the device, and prevent discharge arc from occurring on the sidewall and the bottom plate of the device, thereby improving the safety of the device.

[0117] And, after the discharge micro-needle plate 5 and the electrode plate 3 are electrified, the active fog ions generated by the discharge micro-needle plate 5, the controller obtains the current working temperature of the substrate 1; the controller obtains the temperature difference value according to the current working temperature of the substrate 1 and the working temperature threshold value; the controller controls the refrigeration power of the refrigeration unit 4 according to the temperature difference value. Real-time intelligent control can be performed on the refrigeration unit power, so that the micro-needle active fog ion generating device can adapt to various working environments, improve user demand, and improve the working efficiency of the device.

[0118] The above is the preferred embodiment of the present application. It should be noted that for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which should also be considered within the scope of protection of the present application.

Claims

1. A microneedle active fog ion generation device, characterized by, It comprises: a substrate (1); a heat dissipation support column (2) fixedly connected with the edge of the substrate (1); an electrode plate (3) arranged at the end of the heat dissipation support column (2); a refrigeration unit (4), the heat releasing end of which is fixedly connected with the substrate (1); a discharge micro-needle plate (5) fixedly connected with the refrigeration end of the refrigeration unit (4), which forms a high-voltage discharge electric field with the electrode plate (3); the substrate (1) is fixedly connected with a first support column (61) and a second support column (62), which are located on both sides of the discharge micro-needle plate (5); a blocking piece (7) made of hydrophilic material is fixedly connected between the first support column (61) and the second support column (62), and the blocking piece (7) is located above the discharge micro-needle plate (5); the blocking piece (7) is a sponge-like structure, and a through hole (71) is arranged on the blocking piece (7); in use, when the water vapor in the air condenses into droplets on the discharge micro-needle plate (5), the droplets will enter the through hole (71) of the blocking piece (7) for storage under the attraction of the hydrophilic property of the blocking piece (7); when the environment is normal, the electrode plate (3) and the discharge micro-needle plate (5) complete discharge through the water in the blocking piece (7), and release active fog ions into the environment; when the environment is dry and it is difficult to condense water, the blocking piece (7) hinders the discharge process of the electrode plate (3) and the discharge micro-needle plate (5).

2. The microneedle active fog ionization device according to claim 1, characterized by, At least two insulating blocking pieces are fixedly connected on the substrate (1); the at least two insulating blocking pieces extend from the substrate (1) to the electrode plate (3), and the height is greater than or equal to the height of the refrigeration unit (4).

3. The microneedle active fog ionization device according to claim 2, wherein, A first insulating blocking piece (111) of the at least two insulating blocking pieces is arranged between the heat dissipation support column (2) and the first support column (61); a second insulating blocking piece (112) is arranged between the heat dissipation support column (2) and the second support column (62).

4. The microneedle active fog ionization device according to claim 3, characterized by, The end surface of the first insulating blocking piece (111) and the second insulating blocking piece (112) is provided with a groove, which is suitable for storing condensed water.

5. The microneedle active fog ionization device according to claim 1, wherein, A solder resist layer (12) is arranged on the surface of the substrate (1).

6. The microneedle active fog ionization device according to claim 1, wherein, The discharge micro-needle plate (5) is electrically connected with a temperature sensor (9).

7. The microneedle active fog ionization device according to claim 6, wherein, A wiring terminal (13) is fixedly connected on the substrate (1), and the wiring terminal (13) is connected with the refrigeration unit (4) through a wire (8).

8. The microneedle active fog ionization device according to claim 7, wherein, The refrigeration unit (4), the wire (8) and the temperature sensor (9) are covered by insulating glue (10).

9. A control method of a microneedle active fog ion generation device, characterized by, A micro-needle active fog ion generating device as claimed in any one of claims 1-8, comprising: after the discharge micro-needle plate (5) and the electrode plate (3) are electrified, the controller obtains the current working temperature of the substrate (1) when the discharge micro-needle plate (5) generates active fog ions; the controller obtains a temperature difference value according to the current working temperature of the substrate (1) and a working temperature threshold value; The controller controls the refrigeration power of the refrigeration unit (4) according to the temperature difference.

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