CN218690454U - Micro-static purification device capable of keeping efficiency in high-humidity environment - Google Patents

Abstract

The utility model discloses a little electrostatic purification device of high humid environment holding efficiency, include the filter core that the insulation board who has air passage between the upper and lower panel piles up the constitution, insulation board's upper panel is provided with conductive material, and conductive material's edge keeps predetermined concave distance with insulation board's edge to the concave distance at insulation board length direction both ends is different, and upper and lower two-layer insulation board rotates 180 degrees in the horizontal direction and piles up, and piles up the insulation board that at least one deck did not set up conductive material in the exposed one side of conductive material, and the filter core edge after the pile up is through hot melt cutting processing; two electrode strip holding tanks are cut out respectively at filter core length direction both ends, and electrode strip and with the joint of being connected insulated wire all seal up in the electrode strip holding tank of filter core. The utility model discloses under high humid environment, improve the stability of work, guarantee work efficiency and dust holding capacity, and avoid electric current leakage, draw phenomena such as arc striking.

Description

Micro-static purification device capable of keeping efficiency in high-humidity environment

Technical Field

The application belongs to the technical field of air purification, and particularly relates to a micro-static purification device capable of keeping efficiency in a high-humidity environment.

Background

The Micro Electrostatic technique (Micro Electrostatic Precipitator) is a technique for purifying air using a strong electric field using a dielectric material as a carrier. The dielectric material wraps the electrode plates to form a honeycomb-shaped hollow micropore channel, a strong electric field is formed in the channel, great attraction is exerted on charged particles moving in the air, and meanwhile, microorganisms such as bacteria, viruses and the like attached to the particles can be collected and killed in a strong electric field. The micro-static technology can not only remove PM1.0, PM2.5 and PM10 with high efficiency, but also remove microorganisms such as white staphylococcus, natural bacteria, H1N1 influenza A virus, SARS-CoV-2 novel coronavirus and the like with high efficiency and broad spectrum sterilization; the water purifying device has the characteristics of small resistance, no material consumption, safety, harmlessness, coexistence of human and machine and no production of harmful substances (such as ozone), so that the water purifying device is widely applied to purification and disinfection products of human living environment.

The micro-static technology consists of an ionization region (ionization module) and a dust collection region (micro-static filter), wherein the ionization region and the dust collection region (micro-static filter) are powered by a high-voltage power supply, and the power supply can be arranged in the ionization module and the micro-static filter or arranged outside the ionization module and the micro-static filter and connected by a lead.

The ionization region charges pollutants such as particulate matters in the air, and then the pollutants such as the charged particulate matters are captured and adsorbed in the dust collection region, so that the air is purified.

In high humidity environments, such as >80% relative humidity environments, micro-electrostatic air cleaners often do not operate consistently and the efficiency, dust holding capacity, rapidly decay with increasing humidity. Under the condition of high humidity, once a dielectric material of the micro-electrostatic filter in the purifier is damaged or a leakage path is increased due to unreasonable structural design and sealing, the micro-electrostatic filter is easy to leak current and arc and strike fire, so that the purifier cannot work normally; meanwhile, due to the failure of voltage and current control, even the temperature of the dielectric material at the current leakage position of the micro-electrostatic filter rises, the dielectric material melts through the dielectric material and burns out in a large area, and the micro-electrostatic air purifier on the market can not solve the problems, so that the efficiency and the dust holding capacity are reduced in a high-humidity environment, and fire accidents happen.

Disclosure of Invention

The application aims to provide a micro-static purification device with high-humidity environment maintaining efficiency, so as to meet the application requirement in a high-humidity environment.

In order to achieve the purpose, the technical scheme of the application is as follows:

the utility model provides a little electrostatic purification device of high humid environment holding efficiency, little electrostatic purification device of high humid environment holding efficiency includes the last casing and the lower casing of mutual joint to and hold the filter core between last casing and lower casing, wherein:

the filter element is formed by stacking insulating plates with air channels between an upper panel and a lower panel, a spacing retaining piece is arranged between the upper panel and the lower panel, and the spacing retaining piece and the upper panel and the lower panel form the air channels;

the upper panel of the insulating plate is provided with a conductive material, the edge of the conductive material and the edge of the insulating plate keep preset concave distances, the concave distances at two ends of the insulating plate in the length direction are different, the upper layer and the lower layer of the insulating plate of the filter element are stacked in the horizontal direction in a rotating mode of 180 degrees, at least one layer of insulating plate without the conductive material is stacked on the exposed side of the conductive material, and the edge of the stacked filter element is subjected to hot melting cutting treatment;

two electrode strip accommodating grooves are respectively cut at two ends of the filter element in the length direction and are used for accommodating a first electrode strip and a second electrode strip respectively, and the first electrode strip and the second electrode strip are electrically coupled with a conductive material with a short concave distance at the end where the electrode strip is located respectively;

the first electrode strip and the second electrode strip are further respectively connected with insulated wires, and the first electrode strip, the second electrode strip and a joint connected with the insulated wires are sealed in the electrode strip accommodating groove of the filter element.

Furthermore, filter core length direction both ends still are provided with the insulating board that sealed at least one deck of gluing adhesion of gluing does not set up conducting material at the sealed back of electrode strip holding tank.

Further, the insulating wire other end that first electrode strip and second electrode strip are connected connects power module, power module is external power module, power module includes sample comparison circuit, current-limiting circuit and voltage adjustment circuit, sample comparison circuit is when detecting output voltage change, and output voltage is the constant voltage output through voltage adjustment circuit adjustment, sample comparison circuit detects current variation and surpasss the threshold value of settlement after, through current-limiting circuit restriction load current, little electrostatic filter is still including the first electrode contact and the second electrode contact of connecting power module, first electrode contact passes through insulating wire and connects first electrode strip, the second electrode contact passes through insulating wire and connects the second electrode strip.

Further, the lower shell is provided with a first cavity and a second cavity which respectively accommodate the first electrode contact piece and the second electrode contact piece, and the first cavity and the second cavity are sealed by glue filling after accommodating the first electrode contact piece and the second electrode contact piece;

two semi-protruding partition plates are respectively arranged in the first cavity and the second cavity, and the middle parts of the first electrode contact piece and the second electrode contact piece are concave and clamped between the partition plates;

and two grooves are arranged between the first cavity and the second cavity of the lower shell.

Furthermore, the other end of the insulated wire connected with the first electrode strip and the second electrode strip is connected with a power module, the power module is a built-in power module and is arranged in the upper shell or the lower shell, the power module comprises a sampling comparison circuit, a current limiting circuit and a voltage adjusting circuit, when the sampling comparison circuit detects that the output voltage changes, the output voltage is adjusted to be constant voltage output through the voltage adjusting circuit, the sampling comparison circuit limits load current through the current limiting circuit after detecting that the current change exceeds a set threshold value, the output end of the power module is connected with the first electrode strip and the second electrode strip through the insulated wire, the input end of the power module is connected with a third electrode contact and a fourth electrode contact through the insulated wire, the third electrode contact and the fourth electrode contact are clamped in a cavity formed in the upper shell or the lower shell, and the joints of the third electrode contact and the fourth electrode contact with the insulated wire and the joints of the power module and the insulated wire are sealed through sealant.

Furthermore, magnets are arranged on two sides of the upper shell or the lower shell.

Furthermore, the air channels of the filter element insulation plates are quadrilateral air channels, the quadrilateral air channels are distributed in a staggered mode, and the distance retaining piece of the quadrilateral air channel of one insulation plate is located between the distance retaining pieces of the quadrilateral air channels of the other insulation plate.

Further, the conductive material is recessed by a preset distance with respect to four sides of the insulating plate respectively, and the recessed distance of one end is greater than that of the other end in the length direction, wherein:

the concave distance of one end in the length direction is 10-30mm, and the concave distance of the other end is 0-10mm;

the concave distance between the left side and the right side and the edge is 2-15mm;

the bottom of the electrode strip accommodating groove reaches the conductive material with the short concave distance of the end or continuously extends into the conductive material with the short concave distance of the end by 0-10mm, and the width of the bottom of the electrode strip accommodating groove is 2-10mm; the two electrode strip accommodating grooves are matched with the first electrode strip and the second electrode strip.

Further, the width of the conductive material on the side where the recess distance is short is smaller than the width of the other portion.

Furthermore, the first electrode strips (71) and the second electrode strips (72) are respectively placed into the corresponding electrode strip accommodating grooves after being heated.

The utility model provides a little electrostatic purification device of high humid environment holding efficiency, to under high relative humidity environment, little electrostatic air purifier work is unstable, the inefficiency scheduling problem, from the frame structure, the sealing of electrode circuit, filter structural design and four aspects of power current-limiting improve the design simultaneously, improve the frame structure, the leakproofness of electrode circuit, filter structural design's rationality, increase the detection and the restriction of power to the electric current, thereby under high humid environment, improve the stability of work, guarantee work efficiency and dust holding capacity, and avoided current leakage, high humid inefficiency, draw the arc to strike sparks scheduling problem.

Drawings

FIG. 1 is a schematic structural diagram of a micro-electrostatic purification apparatus of the present application in example 1;

FIG. 2 is an exploded view of the micro-electrostatic purification apparatus of the present application in example 1;

FIG. 3 is a schematic view of an insulation board according to an embodiment of the present application;

FIG. 4 is a schematic diagram illustrating a staggered arrangement of air channels;

FIG. 5 is a schematic view of a stack of insulation boards according to the present application;

FIG. 6 is a schematic view of a cartridge construction of the present application;

FIG. 7 is a schematic view of an electrode contact mounting cavity according to an embodiment of the present application;

FIG. 8 is a schematic diagram of an electrode contact shape according to an embodiment of the present invention;

FIG. 9 is an exploded view of a micro-electrostatic filter built in a power module according to the present application;

fig. 10 is a schematic view of the power module installation in embodiment 2 of the present application;

FIG. 11 is a block diagram of a power module according to an embodiment of the present disclosure;

fig. 12 is a schematic view of the conductive material and electrode strip receiving groove of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

The existing micro-static purification device has the following problems in a high-humidity environment:

1. the casing of the micro-electrostatic cleaning device and the electrode circuit are not completely sealed, or the dielectric material on the surface is damaged.

When the electrode circuit of the micro-static purification device is not completely sealed or the dielectric material on the surface is damaged, the short circuit of the circuit is easily formed under a high-humidity environment even in the presence of water drops, so that electric leakage, breakdown, arc discharge and ignition are caused, and the dielectric material coated nearby can be broken down, ignited and even burnt; if the adsorbed particles are attached to the electrode plate, charges are easier to be enriched on the electrode plate, the attached particles are easier to adsorb liquid drops in the air, the protrusions of the particles are easier to increase the leakage of current, the efficiency of the filter is reduced, the coated dielectric material is further damaged, and the normal and safe operation is influenced.

2. The open loop control or the electric control loop of the constant power supply has no current-limiting design.

In a certain voltage rising interval, the purification efficiency of the micro-static purification device is in direct proportion to the voltage, and the voltage is high, so that the purification efficiency is high. With the increase of air humidity, over-high voltage easily causes arc discharge and ignition, and if the voltage is too high, the micro-static purification device fails, and if the voltage is too high, open fire is generated to cause fire. At present, most power supply modules of the micro-static purification device are constant in power, and open-loop control is adopted, namely, the output voltage is changed along with the change of a load. As the humidity of the air increases, the accumulation of dust in the micro-electrostatic cleaning device causes a change in voltage, resulting in a decrease in cleaning efficiency and even a failure.

And the power module of the micro-static purification device is not provided with a detection control module generally, and the current is not monitored and limited, namely the output current is changed along with the change of the load. Along with the increase of air humidity, air becomes more easily ionized and even breaks down, and the accumulation of little electrostatic purification device dust leads to ionization clearance to diminish, and the electric current can sharply increase at this moment, reaches the biggest when breaking down completely, leads to the clarifier short circuit to burn out, can cause the naked light seriously.

The micro-static purification device for maintaining efficiency in high humidity environment of the present application is described below by two embodiments, which are an external embodiment of the power module and an internal embodiment of the power module, and are explained below.

Embodiment 1, as shown in fig. 1 and 2, the micro-electrostatic purification apparatus includes an upper case 1 and a lower case 2 which are clamped to each other, and a filter cartridge 3 which is accommodated between the upper case 1 and the lower case 2, wherein:

the filter element 3 is formed by stacking insulating plates with air channels between an upper panel and a lower panel, a spacing retaining piece is arranged between the upper panel and the lower panel, and the spacing retaining piece and the upper panel and the lower panel form the air channels;

the upper panel of the insulating plate is provided with a conductive material, the edge of the conductive material and the edge of the insulating plate keep a preset concave distance, the concave distances at two ends of the insulating plate in the length direction are different, the upper layer and the lower layer of the insulating plate of the filter element 3 are stacked in the horizontal direction by rotating 180 degrees, at least one layer of insulating plate without the conductive material is stacked on the exposed side of the conductive material, and the edge of the stacked filter element 3 is subjected to hot melting cutting treatment;

two electrode strip accommodating grooves are respectively cut at two ends of the filter element 3 in the length direction and are used for accommodating a first electrode strip 71 and a second electrode strip 72 respectively, and the first electrode strip 71 and the second electrode strip 72 are electrically coupled with a conductive material with a short concave distance at the end where the electrode strip is located respectively;

the first electrode strip 71 and the second electrode strip 72 are also respectively connected with an insulated conducting wire, and the first electrode strip 71, the second electrode strip 72 and a joint connected with the insulated conducting wire are sealed in the electrode strip accommodating groove of the filter element 3; the electrode strips have a conductive function, and the material is not limited herein.

Specifically, the filter element 3 is formed by stacking a plurality of insulating sheets, and as shown in fig. 3, the single insulating sheet includes upper and lower panels, and a spacer 102 disposed between the upper and lower panels, and the spacer and the upper and lower panels form an air passage 101. Due to the supporting effect of the distance maintaining piece, the shape of the insulating board is kept well, the distance between the conducting materials on the two sides is fixed, the phenomenon of striking sparks is not easy to occur, and the problem of corona discharge caused by the fact that the electrodes are not parallel is avoided. The distance between the two sides of the conductive material is suitable for the design and production process of the filter element, and is not limited herein.

In this embodiment, the air channel is preferably quadrilateral, but may be triangular, trapezoidal, or other shapes. In a specific embodiment, when the insulation boards are stacked, the quadrilateral air channels of adjacent insulation boards are staggered, as shown in fig. 4, the distance keeping piece of the quadrilateral air channel of one insulation board is positioned between the distance keeping pieces of two quadrilateral air channels of the other insulation board. The air passages of other shapes can also be staggered, so that the spacers are offset with respect to one another.

The space maintaining members in the left portion of fig. 4 are not staggered, and the corners of the air passages in the upper and lower layers are likely to cause the breakdown or sparking between the electrodes after dust collection. The present application, however, uses the design of the right-hand portion of fig. 4, i.e., the spacer of the quadrilateral air channel is located between the spacers of two quadrilateral air channels of the other sheet of insulating material, preferably in a central position. Due to the design, each angle of the quadrilateral air channel is staggered, when dust collection occurs, short circuit cannot be formed due to dust collection, and the phenomenon of sparking under a high-humidity environment can be effectively avoided. The strip electrodes are parallel and equidistant, so that the problem of corona discharge caused by non-parallel electrodes is avoided.

When the insulating plate materials are stacked in a staggered mode, the spacing retaining pieces in two adjacent rows are kept in a staggered arrangement, generally one of the two rows of spacing retaining pieces is preferably positioned right on the central line of two adjacent spacing retaining pieces in the other row of spacing retaining pieces when the insulating plate materials are stacked. Purifier is when adsorbing the particulate matter, because interval keeper forms approximate 90 degrees right angles with insulation board, produces frictional force here between and the air, and dirt such as particulate matter is changeed and is concentrated in this bight, including just to the insulation board side of air current direction, takes dirt such as particulate matter equally easily. Therefore, in the later operation, the two places are relatively easy to accumulate dirt, namely, the resistance value of the leakage path is reduced, and the leakage current is easy to increase. If the upper and lower spacers on the same insulating sheet are arranged on the same straight line, the adsorbed dirt will accumulate at the 4 right angles and windward side of the insulating sheet at the maximum speed, and then the resistance of the leakage path with another insulating sheet will be reduced at the fastest speed, increasing the generation of leakage current. The staggered spacing keeps the spacers undoubtedly in a limited space, and leakage paths are reduced to the maximum extent.

By the method, for example, a common electrostatic purification device in an air-conditioning box is a purification device with the width of 310mm (the length is 500mm, and the thickness is 50 mm), a dust collection space is formed every 2.14mm of thickness, or the dust collection space occupied by adjacent high and low potential insulation plates has 144 dust collection spaces in total, so that 288 leakage paths of possible leakage current are eliminated; in some application fields, the thickness of the dust collecting space can reach about 1mm, the width is the same, more paths for generating leakage current are needed, the leakage path is greatly reduced by adopting the design of the application, and the generation of the leakage current is reduced.

As shown in fig. 12, the edge of the conductive material 200 and the edge of the insulating plate 100 keep a predetermined concave distance, that is, a certain distance from the edge, so as to prevent the discharge phenomenon from occurring between the charged insulating plate and the surrounding objects. And the concave distances at the two ends of the insulating board in the length direction are different, namely the concave distance at one end in the length direction is larger than that at the other end.

And when stacking, the upper and lower layers of insulating plates are rotated 180 degrees in the horizontal direction to be stacked. As shown in fig. 5, when stacked, the adjacent two layers are horizontally opposite, for example, the upper layer of conductive material is recessed by a large distance (L2) on the right side and the lower layer of conductive material is recessed by a small distance (L1) on the right side; and the concave distance of the next layer adjacent to the first layer is larger and is positioned at the left side, and the concave distance is smaller and is positioned at the right side.

For example, the concave distance of one end in the length direction is 10 to 30mm, and the concave distance of the other end is 0 to 10mm; the concave distance between the left side and the right side and the edge is 2-15mm. The left side and the right side of the conductive material keep a certain distance from the edge of the filter element, so that the phenomenon of electrode ignition can be prevented.

The left side and the right side of the conductive material keep a certain distance from the edge of the filter element, so that the phenomenon of electrode ignition can be prevented. The length and width of the conductive material is compatible with the filter element design and is not limited herein. The conductive material being a treeGrease, electrode materials, flame retardants, adhesives and other materials; the conductive material has semi-conductive property and internal resistance of 10 ⁵ -10 ⁸ In the interval of megaohms.

In one specific embodiment, the conductive material disposed on the face sheet of the insulation board of the present application is generally rectangular, as shown in fig. 12, wherein 100 denotes the insulation board and 200 denotes the conductive material on the insulation board, and the conductive material may be rectangular in shape and uniform in width as shown in part (a). Alternatively, as shown in part (b), the width of the end with a short recess distance is reduced to be smaller than that of the rest part, so that the conductive material can be saved. The same object can be achieved by providing a trapezoidal structure at the end of the recess having a short recess distance, as shown in part (c). The concave distance of the conductive material can be directly to the edge or be partially concave at the end with the short concave distance, and the concave distance of the embodiment is 0-10mm, so that a better using effect can be achieved. In the schematic diagram of fig. 12, the conductive material is recessed a short distance on the left and a long distance on the right. Specifically, as shown in the example of the right portion of fig. 12, the conductive material is recessed by a distance of zero at the left end, i.e., is not recessed at the left end, which also satisfies the requirement that the recessed distance at one end is short.

It should be noted that in an electrostatic purification device, any significant leakage current between two sets of insulating sheets will result in a decrease in voltage between the sheets, resulting in a decrease in primary purification efficiency of the particulate matter. If the high voltage power supply module adopts constant voltage output, the power consumption will increase with the increase of leakage current, and when it reaches the maximum current of the high voltage power supply, the voltage across the purification device will decrease, or the efficiency of the electrostatic purification device will be reduced. Meanwhile, the increase of leakage current causes local ignition or ablation to destroy the structure of the purification device. Therefore, the occurrence of leakage current is reduced to the maximum extent through the different depths of the conductive material recessed insulation board.

The main cause of current leakage in electrostatic purification devices is leakage current along two sets of insulating sheets of different potentials. The leakage current is affected by the voltage between the insulation boards, the length of the leakage distance, the relative humidity of the working environment, and the conductivity of the surface of the insulation boards. The clean purifying device has no problem that external factors increase leakage current, when air to be purified passes through the purifying device, dirt such as pollutants in the air is adsorbed by the insulating plates of the purifying device and is continuously accumulated, so that the leakage distance between the insulating plates is reduced, and the leakage current is increased; meanwhile, most of dirt accumulated on the insulating board has obvious conductivity, so that the conductivity of the surface of the insulating board is increased, and the leakage current is increased; under the same condition, the increase of the relative humidity can also reduce the resistance generated by the physical distance between two groups of insulation boards with different electric potentials and can also increase the generation of leakage current. In order to reduce the generation of leakage current, it is a direction to reduce the voltage between two sets of insulation boards, but in doing so, the electric field strength between the insulation boards will be reduced, and the charged particles will pass through the space between the insulation boards, and the electric field strength will be reduced, so reducing the voltage between the insulation boards will weaken the adsorption capacity to pollutants such as particles, which will affect the purification efficiency of the electrostatic purification device.

The traditional insulating board has no effective pressing between layers, and gaps between layers easily cause the printed circuit to be exposed, so that current leakage and arc discharge are generated. The layers are adhered by glue, so that poor internal sealing and exposed printed circuit caused by external influences such as heat and the like can be caused, current leakage and arc discharge and ignition can be generated. The creative mode that adopts heater hot melt cutting of this application cuts out the filter core, and each edge of filter core all passes through heater hot melt cutting, and insulating dielectric material hot melt slightly liquefies in order to form the turn-up, and cooling back layer and interlaminar cutting edge are mixed and melt, form fine sealed. The filter element plate does not adopt a glue pasting mode between layers, overcomes the problems of poor internal sealing, exposed printed circuit, easy current leakage, arc discharge, ignition and the like caused by the traditional processing mode, and can realize complete coating and no damage of the insulating dielectric material.

In one specific embodiment, the heating temperature of the heating wire ranges from 190 ℃ to 210 ℃ when the ambient temperature is 24 ℃ to 25 ℃, and is preferably 200 ℃. The advancing speed of the heating wire is 5-20mm/min, preferably 12mm/min.

The raw materials of the insulating plate comprise granular insulating dielectric raw materials, a flame retardant and color masterbatch, and are firstly granulated for the second time. Before the secondary granulation, carry out drying process to granular insulating dielectric medium raw and other materials earlier, the stoving can be with the steam evaporation in the dielectric medium material, avoids having the bubble to produce when extrusion molding, influences the roughness that keeps apart the bearing conducting material framework surface. Specifically, the weight ratios of the granular insulating dielectric raw material, the flame retardant and the color master are as follows: 89% -93% of the dried granular insulating dielectric raw material, 3% -8% of flame retardant and 1% -3% of color master batch.

Wherein the granular insulating dielectric material is prepared by mixing one or more of polyethylene, polypropylene, polyvinyl chloride, polystyrene, acrylonitrile-butadiene-styrene copolymer, polyformaldehyde, polyamide, polycarbonate, polyethylene terephthalate or polyimide. The flame retardant is formed by mixing one or more of tris (2, 3-dibromopropyl) isocyanurate, tribromophenol, tricresyl phosphate, triphenyl phosphite or dimethyl methyl phosphonate. The color master is the color master corresponding to the selected granular insulating dielectric raw material.

The melt index of the raw materials after the secondary granulation is 3-6g/10min. Too low can cause the hot melt to become liquid quickly, and too high can cause the melt to fail to achieve full coverage of the conductive material within its curled edge.

As shown in fig. 6, two electrode strip receiving grooves, namely a first groove 31 and a second groove 32, are respectively cut at both ends of the filter element 3 in the length direction, and as shown in fig. 12, the electrode strip receiving grooves 300 are perpendicular to the plane of the conductive material.

Because the concave distances of the two ends of the conductive material on the insulating plate in the length direction are different, after stacking, part of the conductive material is inevitably on the side of the first groove 31 and close to the first groove 31, the other part of the conductive material is far away from the first groove 31, and the far part of the conductive material is on the side of the second groove 32 and close to the second groove 32.

After the first electrode strips 71 and the second electrode strips 72 are respectively arranged in the first grooves 31 and the second grooves 32, the first electrode strips and the second electrode strips are electrically coupled with the adjacent conductive materials respectively to form positive and negative electrodes of the micro-static purification device.

In some embodiments, the bottom of the electrode strip receiving groove reaches the conductive material with the short recessed distance at the end, or continues to extend into the conductive material with the short recessed distance at the end by 0-10mm, and the width of the bottom of the electrode strip receiving groove is 2-10mm; the two electrode strip accommodating grooves are matched with the first electrode strip 71 and the second electrode strip 72, and the electrode strips and the joints of the electrode strips and the insulated wires are sealed in the electrode strip accommodating grooves through glue pouring and sealing.

As shown in fig. 12, the electrode strip receiving groove 300 may cut into a depth just to reach the conductive material or may extend into the conductive material.

It should be noted that, this application is not limited to the cutting mode of electrode strip holding tank, can mechanical cutting, also can adopt the mode of heater hot melt cutting. The cutting depth enables the bottom of the containing groove to be just contacted with the conductive material with the short concave distance at the end where the containing groove is located, or extend into the conductive material with the short concave distance at the end where the containing groove is located by 0-10mm. Therefore, the electrode strips and the conductive material which are arranged in the conductive device have good electric induction and good charging effect.

As shown in fig. 2, the first electrode strip (71) and the second electrode strip (72) are further connected with insulated conducting wires respectively, and the first groove 31 and the second groove 32 are sealed by sealants (91, 92), so that the first electrode strip (71), the second electrode strip (72) and a joint connected with the insulated conducting wires are sealed in the electrode strip accommodating groove of the filter element (3), and complete sealing is achieved.

3 length direction both ends of this embodiment filter core still are provided with sealed at the sealed back of gluing at the electrode strip holding tank and do not set up conducting material's at least one deck of gluing adhesion.

It can be easily understood that the electrode strip accommodating grooves are cut at the two ends of the filter element 3 in the length direction, the electrode strips are placed in the electrode strip accommodating grooves, and after the electrode strips are connected with the insulated wires, the electrode strips and the connectors of the insulated wires are sealed in the electrode strip accommodating grooves by adopting sealant, so that the sealing performance of the electrode strips can be ensured. In order to achieve better sealing, at least one layer of insulating plate material without conductive materials is attached to the two ends of the insulating plate material, so that the electrodes can be better sealed, the conductive materials are completely sealed in the insulating dielectric medium, and the current leakage and the ignition phenomena are further prevented.

In another specific embodiment, after the electrode strip accommodating groove is cut, the electrode strip is heated and placed into the electrode strip accommodating groove, and then the electrode strip and the connector with the insulated conductor are sealed in the electrode strip accommodating groove by the same sealant, so that the sealing performance and the stability are better.

The power module is connected to the insulated wire other end that first electrode strip (71) and second electrode strip (72) are connected, power module includes sample comparison circuit, current-limiting circuit and voltage adjustment circuit, sample comparison circuit when detecting output voltage and change, adjusts output voltage for constant voltage output through voltage adjustment circuit, sample comparison circuit detects current variation and surpasses the threshold value of settlement after, through current-limiting circuit restriction load current.

In this embodiment, the power module is external, and power module's output is connected to the power supply on this device's the electrode contact, and the electrode contact passes through insulated wire and is connected with the electrode bar. Since the power module is externally arranged, the other end of the insulated wire is connected with two electric contacts, namely a first electrode contact 41 and a second electrode contact 42, and the first electrode contact 41 and the second electrode contact 42 are connected with an external power supply through the insulated wire.

Specifically, in the present embodiment, the first electrode contact 41 connected to the power supply module is connected to the first electrode bar 71 through the first insulated wire 5; the second electrode contact 42 is connected to the second electrode strip 72 through the second insulated wire 6. The first electrode strips 71 and the second electrode strips 72 are built in the electrode strip receiving grooves (the first grooves 31 and the second grooves 32), and then the sealant (91 and 92) is sealed on both the electrode strip receiving grooves.

As shown in fig. 1, a first cavity 21 and a second cavity 22 for accommodating the first electrode contact 41 and the second electrode contact 42 are disposed at one end of the lower case 2 corresponding to the first groove 31, and the first cavity 21 and the second cavity 22 are sealed by potting after accommodating the first electrode contact 41 and the second electrode contact 42.

No matter the carbon electrode in the filter core of this application, still electrode contact and electrode strip to and their junction, all sealed completely through insulating dielectric material or sealed glue, realize that the electrode is sealed insulating, even make under the high humid environment of >80% relative humidity, still can be steady carry out work.

And embedding the electrode strip into the groove matched with the electrode strip, and then filling and sealing the insulating sealing colloid, so that the electrode strip is firmly fixed in the groove, and the leakage current generated by the electrode strip in the groove is avoided. Meanwhile, 1 end part of the electrode strip is connected with a direct-current high-voltage output lead of the high-voltage power supply module to form high voltage of the purification device, induced voltage of the high voltage to the conductive material is utilized, the electrode strip is communicated with the conductive material, and a required voltage value is formed between the continuously stacked insulating plates.

In another embodiment, as shown in fig. 7 and 8, two semi-protruding partition plates are respectively disposed inside the first cavity 21 and the second cavity 22, and the middle portions of the first electrode contact 41 and the second electrode contact 42 are recessed and clamped between the partition plates.

The electrode contact sheet of the embodiment is clamped between the partition plates, the partition plates form a labyrinth inside the first cavity 21 and the second cavity 22, and then the labyrinth is sealed through sealant pouring. Adopting a labyrinth sealing structure design, and adopting glue coating sealing for the exposed electrode; any exposed electrical contact position in the circuit is sealed by glue, and the two parts are tightly combined in a seamless manner, so that the waterproof design on the circuit is realized. The electrode contact is tightly combined with the lower insulating shell 2, the insulating sealing glue in a molten state is canned in the first cavity and the second cavity, and the electrode contact is completely immersed in the sealing glue, so that the sealing and insulation of the electrode are realized. The lead 5 or 6 extends along the slots beside the first cavity 21 and the second cavity 22 and is connected with the first electrode bar 71 and the second electrode bar 72.

In another specific embodiment, as shown in fig. 7, the lower housing 2 is provided with two grooves between the first cavity 21 and the second cavity 22. The creepage distance can be increased in the presence of water or dust.

The power module in this embodiment 1 includes sample comparison circuit, current-limiting circuit and voltage adjustment circuit, sample comparison circuit when detecting output voltage change, adjusts output voltage for constant voltage output through the voltage adjustment circuit, sample comparison circuit detects current change and surpasses behind the threshold value of settlement, through current-limiting circuit restriction load current.

The sampling comparison circuit detects output voltage and current, and when the output voltage is detected to be changed, the output voltage is adjusted to be constant-voltage output through the voltage adjusting circuit, so that when the load is changed, the voltage is automatically adjusted to be consistent with a set value, and the voltage is kept to be constantly output in a stable state. So that the high-efficiency purification efficiency is kept under the environment with different humidity. When the current change is detected to exceed a set threshold value, the current limiting circuit is added into a loop, and the current of a load is limited through the current limiting circuit, so that current limiting protection is performed when the instantaneous change of the working current exceeds the threshold value, and when the instantaneous change of the working current is caused to be large or exceeds a rated value due to abnormal change of the load, the current limiting circuit (about 100 megaohm current limiting resistor) is automatically switched in to limit the surge and the upper limit value of the current, so that the filter is kept from being ignited under a high-humidity environment, and the filter is safe and reliable.

In the foregoing embodiment, power is supplied by an external power module. The power module of this application can also place in the little electrostatic purification device casing that high humid environment kept efficiency in, and external alternating current power supply supplies power.

In this application, the casing is fixed with the filter core with lower casing, scribbles the one deck hot melt adhesive around casing inside, perhaps scribbles the one deck hot melt adhesive along windward side edge and the leeward side edge of filter core, increases fastness, the leakproofness that casing and filter core are connected.

Embodiment 2, as shown in fig. 9 and 10, the power module 10 of the present embodiment is built in a case, and is connected to an external power source through electrode contacts.

In the present embodiment, the third and fourth electrode pads 43 and 44 are connected to the input terminal of the power module 10 through the insulated wires 7 and 8, and the first and second electrode bars 71 and 72 are connected to the output terminal of the power module 10 through the insulated wires 5 and 6.

After the first electrode strips 71 and the second electrode strips 72 are connected by the insulated wires, the first electrode strips and the second electrode strips are sealed by pouring sealant (91 and 92). The joint of the power module and the insulated wire is sealed by the sealant.

Similarly, a cavity for mounting the electrode contact is arranged on the shell (the upper shell or the lower shell), and the electrode contact is placed in the cavity and sealed by sealant after being connected with the insulated lead.

The both sides of casing 1 or casing 2 still are provided with magnet 11 on this embodiment, and magnet and the outside quick-witted case effect of little electrostatic air purifier can install little electrostatic air purifier in the quick-witted case steadily.

It should be noted that, in the present application, the mounting positions of the electrode contact and the power module may be in the upper housing or the lower housing, and the above embodiment is only a specific implementation manner, and the present application is not limited to a specific housing structure.

As shown in fig. 11, the power module of the present application includes a rectifying and filtering circuit, a switching tube circuit, a boost voltage-multiplying circuit, a sampling comparison circuit, a voltage adjusting circuit, and a current limiting circuit.

When the sampling comparison circuit detects the change of the output voltage, the output voltage is adjusted to be constant voltage output through the voltage adjusting circuit; the sampling comparison circuit limits the load current through the current limiting circuit after detecting that the current change exceeds a set threshold value.

When the micro-electrostatic filter device works, the power supply module keeps constant voltage output to maintain ionization strength and is not influenced by the loaded micro-electrostatic filter and the environment humidity, so that the capability and the efficiency of the micro-electrostatic filter device for adsorbing particles are ensured. The output voltage U is obtained through a sampling comparison circuit, and the real-time reference setting voltage U is compared with the reference setting voltage U ₀ Comparing, when the voltage is higher or lower than the set voltage U ₀ And then, the voltage is regulated by a voltage regulation circuit so as to achieve constant-voltage steady-state output. The power module outputs constant voltage in steady state under normal working condition, if the micro-electrostatic air purifier becomes more easily ionized because of higher environmental humidity, or along with the running timeAnd accumulated dust in the micropore channel of the micro-electrostatic filter becomes more, so that the distance between the high-voltage polar plate and the grounding polar plate becomes smaller, and the current of the power supply module can be increased continuously or even increased sharply. Therefore, the output current I is obtained through the sampling comparison circuit, and when the current is instantaneously changed (di/dt)>A set value X) or exceeding a nominal value I ₀ When the current is measured, the current-limiting protection circuit is automatically switched in (nanosecond level), and the current-limiting resistor (about 100 megaohms) is connected in series with the constant voltage output circuit. Because the total resistance of the whole loop is increased instantly, the output current is reduced immediately, so that the function of limiting the increase of the current is achieved, and the micro-electrostatic filter is protected from being burnt out by large current.

In the power module of the present application, the rectifying and filtering circuit, the switching tube circuit, the boost voltage doubling circuit, the sampling comparison circuit, the voltage adjustment circuit and the current limiting circuit can be implemented by circuits commonly used in the field with respect to a single circuit, and are not described herein again.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. The utility model provides a little electrostatic purification device of high humid environment maintenance efficiency, its characterized in that, little electrostatic purification device of high humid environment maintenance efficiency includes last casing (1) and lower casing (2) of mutual joint to and hold filter core (3) between last casing (1) and lower casing (2), wherein:

the filter element (3) is formed by stacking insulating plates with air channels between an upper panel and a lower panel, a spacing retaining piece (102) is arranged between the upper panel and the lower panel, and the spacing retaining piece and the upper panel and the lower panel form the air channels;

the upper panel of the insulating plate is provided with a conductive material, the edge of the conductive material and the edge of the insulating plate keep a preset concave distance, the concave distances at two ends of the insulating plate in the length direction are different, the upper layer and the lower layer of the insulating plate of the filter element (3) are stacked in the horizontal direction by rotating 180 degrees, at least one layer of insulating plate without the conductive material is stacked on the exposed side of the conductive material, and the edge of the stacked filter element (3) is subjected to hot melting cutting treatment;

two electrode strip accommodating grooves are respectively cut at two ends of the filter element (3) in the length direction and are used for accommodating a first electrode strip (71) and a second electrode strip (72) respectively, and the first electrode strip (71) and the second electrode strip (72) are electrically coupled with a conductive material with a short concave distance at the end where the electrode strip is located respectively;

the first electrode strip (71) and the second electrode strip (72) are further respectively connected with an insulated lead, and the first electrode strip (71), the second electrode strip (72) and a joint connected with the insulated lead are sealed in the electrode strip accommodating groove of the filter element (3).

2. The micro-static purification device for maintaining efficiency under high humidity environment as claimed in claim 1, wherein after the two ends of the filter element (3) in the length direction are sealed in the electrode strip accommodating groove, at least one layer of insulating plate without conductive material is arranged, wherein the insulating plate is adhered by the sealant.

3. The micro-static purification device for maintaining efficiency in high humidity environment according to claim 1, wherein the other end of the insulated wire connecting the first electrode bar (71) and the second electrode bar (72) is connected to a power module, the power module is an external power module, the power module comprises a sampling comparison circuit, a current limiting circuit and a voltage adjusting circuit, the sampling comparison circuit adjusts the output voltage to be constant voltage output through the voltage adjusting circuit when detecting the output voltage change, the sampling comparison circuit limits the load current through the current limiting circuit after detecting the current change exceeding a set threshold value, the micro-static purification device further comprises a first electrode contact (41) and a second electrode contact (42) which are connected to the power module, the first electrode contact (41) is connected to the first electrode bar (71) through an insulated wire, and the second electrode contact (42) is connected to the second electrode bar (72) through an insulated wire.

4. The micro-static purification device for maintaining efficiency in a high humidity environment according to claim 3, wherein the lower housing (2) is provided with a first cavity (21) and a second cavity (22) for accommodating the first electrode contact (41) and the second electrode contact (42), respectively, and the first cavity (21) and the second cavity (22) are sealed by potting after accommodating the first electrode contact (41) and the second electrode contact (42);

two semi-protruding partition plates are respectively arranged in the first cavity (21) and the second cavity (22), and the middle parts of the first electrode contact piece (41) and the second electrode contact piece (42) are concave and clamped between the partition plates;

the lower shell (2) is provided with two grooves between the first cavity (21) and the second cavity (22).

5. The micro-static purification device for maintaining efficiency in high humidity environment according to claim 1, wherein the other end of the insulated wire connecting the first electrode bar (71) and the second electrode bar (72) is connected to a power module, the power module is a built-in power module and is disposed in the upper shell (1) or the lower shell (2), the power module comprises a sampling comparison circuit, a current limiting circuit and a voltage adjusting circuit, the sampling comparison circuit adjusts the output voltage to be constant voltage output through the voltage adjusting circuit when detecting the change of the output voltage, the sampling comparison circuit limits the load current through the current limiting circuit after detecting the change of the current exceeding a set threshold, the output end of the power module is connected to the first electrode bar (71) and the second electrode bar (72) through insulated wires, the input end of the power module is connected to a third electrode contact and a fourth electrode contact through insulated wires, the third electrode contact and the fourth electrode contact are clamped in a cavity formed in the upper shell (1) or the lower shell (2), and the connection positions of the third electrode contact and the fourth electrode contact and the insulated wire are sealed with the insulated wire through a sealant.

6. The high humidity environment maintaining efficiency micro-static purification device according to claim 1, wherein magnets (11) are further provided on both sides of the upper case (1) or the lower case (2).

7. The high humidity environment maintaining efficiency micro-static purification device according to claim 1, wherein the air channels of the insulation plates of the filter element (3) are quadrilateral air channels, the quadrilateral air channels are distributed in a staggered manner, and the distance keeping piece of the quadrilateral air channel of one insulation plate is positioned between the distance keeping pieces of two quadrilateral air channels of the other insulation plate.

8. The high-humidity environment maintaining efficiency micro-electrostatic purification apparatus according to claim 1, wherein the conductive material is recessed with respect to four sides of the insulating plate material by a predetermined distance, respectively, and a recessed distance at one end is greater than that at the other end in a length direction, wherein:

the concave distance of one end in the length direction is 10-30mm, and the concave distance of the other end in the length direction is 0-10mm;

the concave distance between the left side and the right side and the edge is 2-15mm;

the bottom of the electrode strip accommodating groove reaches the conductive material with the short concave distance of the end or continuously extends into the conductive material with the short concave distance of the end by 0-10mm, and the width of the bottom of the electrode strip accommodating groove is 2-10mm; the two electrode strip accommodating grooves are matched with the first electrode strips (71) and the second electrode strips (72).

9. The high-humidity environment maintaining efficiency micro-electrostatic purification apparatus according to claim 1, wherein the width of the conductive material on the side where the recessed distance is short is smaller than the width of the other portion.

10. The high humidity environment maintaining efficiency micro-static purification device according to claim 1, wherein the first electrode strips (71) and the second electrode strips (72) are heated and then respectively placed in the corresponding electrode strip receiving grooves.

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