阅读说明：本技术 电极结构及静电净化设备 (Electrode structure and electrostatic purification equipment ) 是由 肖德玲 王墅 封宗瑜 曾焕雄 罗汉兵 于 2019-09-19 设计创作，主要内容包括：本发明涉及家用电器技术领域,具体提供了一种电极结构及静电净化设备。电极结构包括：电晕丝,适于在电压作用下产生等离子体；和若干个电离针,一端接触且固设于所述电晕丝上,另一端朝向背离所述电晕丝的方向延伸。电晕丝和电离针形成多级电离结构,使得电晕丝在较低电压下,产生高浓度和高强度的电离电子,实现对空气的消毒净化。由于本发明的电极结构电力电压较低,因此实现较低浓度的臭氧生成或无臭氧生成,24小时臭氧浓度远远低于国家标准,并且有效避免电晕丝在高压下产生电击穿的问题,更加安全可靠。(The invention relates to the technical field of household appliances, and particularly provides an electrode structure and electrostatic purification equipment. The electrode structure includes: a corona wire adapted to generate a plasma under the action of a voltage; and a plurality of ionization needle, one end contact and set firmly in on the corona silk, the other end orientation deviates from the direction of corona silk extends. The corona wire and the ionizing needle form a multi-stage ionization structure, so that the corona wire generates high-concentration and high-strength ionized electrons under lower voltage, and the air is disinfected and purified. Because the electrode structure of the invention has lower electric power voltage, the invention realizes the generation of ozone with lower concentration or no generation of ozone, the ozone concentration in 24 hours is far lower than the national standard, and the invention effectively avoids the problem that the corona wire generates electric breakdown under high voltage, and is safer and more reliable.)

1. An electrode structure, comprising:

A corona wire (1) adapted to generate a plasma under the action of a voltage; and

A plurality of ionization needle (2), one end contact and set firmly in on corona silk (1), the other end orientation deviates from the direction of corona silk (1) extends.

2. The electrode structure according to claim 1,

The other end of the ionizing needle (2) has an ionizing tip coated with a protective coating.

3. The electrode structure according to claim 1,

The length of the ionization needle (2) is 1-20 mm.

4. The electrode structure according to any one of claims 1 to 3,

corona silk (1) is the linearity, and a plurality of fixed positions (3) of interval distribution are on it, and at each fixed position (3), it is a plurality of ionization needle (2) are radial distribution.

5. The electrode structure according to any one of claims 1 to 3,

Corona silk (1) is the broken line form, and a plurality of ionization needle (2) branch is located the dog-ear position of broken line.

6. the electrode structure according to any one of claims 1 to 3,

The corona wire (1) is polygonal, and the ionization needles (2) are uniformly distributed on the outer side of the polygon.

7. An electrostatic purification apparatus, comprising an electrode structure according to any one of claims 1 to 6.

8. the electrostatic purification apparatus according to claim 7, further comprising:

The dust collecting plate assembly comprises a plurality of dust collecting plates (4) for collecting dust; and

And the electrode assembly comprises a plurality of electrode structures and is arranged close to the dust collecting plate (4).

9. The electrostatic purification apparatus according to claim 8, further comprising:

And the plurality of repelling polar plates (5) are respectively arranged between the two dust collecting plates (4).

10. The electrostatic purification apparatus according to claim 9, wherein the electrostatic purification apparatus is an air purifier.

Technical Field

the invention relates to the technical field of household appliances, in particular to an electrode structure and electrostatic purification equipment.

Background

the principle of the method is that ionizing voltage is introduced to electrodes to generate plasma to realize high-efficiency sterilization and disinfection of air, and the plasma is further matched with a dust collecting plate to realize air dust removal. The electrode structure of the electrostatic air purifier on the existing market is generally a corona wire, the corona wire is a linear electrode, the discharge area of the electrostatic air purifier is large, and the effective discharge capacity can meet the daily purification requirement. However, the electrode structure has high corona inception voltage, and if a lower ionization voltage is adopted, the plasma discharge intensity is not enough, so that the aim of efficient sterilization and disinfection cannot be fulfilled; if a higher ionization voltage is adopted, although the high-efficiency sterilization and disinfection effect is realized, the overhigh ionization voltage can generate high-concentration ozone to cause damage to human bodies, and the problem of electric fire and the like caused by easy electric breakdown is solved, so that fire is caused.

Disclosure of Invention

The invention provides an electrode structure and electrostatic purification equipment with the same, and aims to solve the technical problems that the concentration of ozone generated by the conventional electrostatic purifier is high and the risk of electric breakdown exists.

in a first aspect, the present invention provides an electrode structure comprising:

A corona wire adapted to generate a plasma under the action of a voltage; and

a plurality of ionization needle, one end contact and set firmly in on the corona silk, the other end orientation deviates from the direction of corona silk extends.

In some embodiments, the other end of the ionizing needle has an ionizing tip coated with a protective coating.

In some embodiments, the ionizing needle has a length of 1 to 20 mm.

in some embodiments, the corona wire is linear, and a plurality of fixed positions are arranged on the corona wire at intervals, and a plurality of ionizing pins are radially distributed at each fixed position.

In some embodiments, the corona wire is in a folded line shape, and a plurality of the ionization needles are respectively arranged at the folded angle positions of the folded line.

In some embodiments, the corona wire is polygonal, and the ionizing pins are uniformly distributed on the outer side of the polygon.

In a second aspect, the present invention provides an electrostatic purification device comprising an electrode structure according to any one of the embodiments of the first aspect.

In some embodiments, the electrostatic purification apparatus further comprises:

the dust collecting plate assembly comprises a plurality of dust collecting plates and a dust collecting plate, wherein the dust collecting plates are used for collecting dust; and

And the electrode assembly comprises a plurality of electrode structures and is arranged close to the dust collecting plate.

In some embodiments, the electrostatic purification apparatus further comprises:

And the plurality of repelling polar plates are respectively arranged between the two dust collecting plates.

in some embodiments, the electrostatic purification device is an air purifier.

The technical scheme of the invention has the following beneficial effects:

1) the electrode structure provided by the invention comprises a corona wire and a plurality of ionization needles, wherein the corona wire is suitable for generating plasma under the action of voltage, one end of each ionization needle is contacted and fixedly arranged on the corona wire, and the other end of each ionization needle extends towards the direction departing from the corona wire. The corona wire and the ionizing needle form a multi-stage ionization structure, the ionizing needle discharges at the pointed end, the corona starting voltage is low, and therefore the ionizing needle firstly forms primary discharge at low voltage. The corona wire generates initial discharge electrons with higher concentration, forms higher initial field intensity at a discharge position, and a large amount of initial electrons collide with electrons generated by the corona wire, so that the electrons generated by the corona wire are driven to form snowball type development, secondary discharge is formed by the corona wire under lower voltage, high-concentration and high-strength ionization electrons are generated, and air disinfection and purification are realized. Because the electrode structure of the invention has lower electric power voltage, the invention realizes the generation of ozone with lower concentration or no generation of ozone, the ozone concentration in 24 hours is far lower than the national standard, and the invention effectively avoids the problem that the corona wire generates electric breakdown under high voltage, and is safer and more reliable.

2) According to the electrode structure provided by the invention, the corona wire can be arranged into various structures, such as a linear shape, a folded line shape or a polygonal shape, so that the discharge area of the corona wire is increased, and the disinfection and dust removal effects are improved. Meanwhile, the discharge tip of the ionization needle is coated with a protective coating which can be used for oxidation resistance and corrosion resistance, so that the service life of the electrode structure is ensured.

3) The electrode structure provided by the invention can realize sterilization and disinfection of air by utilizing multi-stage discharge, thereby realizing high-effect disinfection under low voltage, and simultaneously can realize air dust removal by matching with the dust collecting plate component, thereby realizing dual purposes of air sterilization and dust removal.

drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic diagram of the structure of an electrode structure according to some embodiments of the present invention.

Fig. 2 is a schematic diagram of an electrode structure according to further embodiments of the present invention.

Fig. 3 is a schematic diagram of an electrode structure according to further embodiments of the present invention.

fig. 4 is a schematic structural view of a purification unit of an electrostatic purification apparatus according to some embodiments of the present invention.

Fig. 5 is a schematic structural view of an electrostatic purification apparatus according to some embodiments of the present invention.

Description of reference numerals:

1-corona wire; 2-an ionization needle; 3-fixed position; 4-a dust collecting plate; 5-repelling polar plate.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

The electrode structure provided by the invention can be used for an electric purifier to sterilize, disinfect, remove dust and the like air. The electric purifier is characterized in that the corona wire is ionized under corona starting voltage to generate plasma, the plasma has a plurality of high-energy ions, and the high-energy ions impact pollutant molecules in the air to ionize, dissociate and excite the pollutant molecules, so that the pollutant molecules can be directly sterilized and detoxified, or a grounded dust collecting plate is combined, particles excited in the air are collected and adsorbed, and air dust removal is realized.

The electrode structure provided by the invention comprises a corona wire and a plurality of ionization needles, wherein the corona wire is suitable for generating plasma under the action of voltage, one end of each ionization needle is contacted and fixedly arranged on the corona wire, and the other end of each ionization needle extends towards the direction departing from the corona wire.

it should be noted that for an ionization purifier, the corona onset field strength and voltage are two important parameters of the purifier, according to the doi-angleron (Deutsch Anderson) efficiency formula:

In the formula, A is the dust collecting electrode area, eta is the purification efficiency, Q is the gas flow, and omega is the driving speed.

It can be seen from the formula (1) that, in the case where the dust collection area a is consistent with the gas flow Q, the propulsion speed ω is a main factor affecting the purification efficiency, and the larger the propulsion speed is, the higher the dust collection effect is. Where the drive speed ω is expressed as:

Where ω is the driving velocity of the charged particles, d_pIs the particle size of the dust, mu is the gas viscosity, q is the smoke charge, and E is the corona-forming electric field strengthAnd (4) degree. It can be seen from the formula (2) that the higher the intensity of the corona-forming electric field, the more advantageous the dust collection is.

The corona starting electric field intensity is related to the shape and the geometric dimension of the electrode, and under the same voltage, the finer the size of the electrode is, the higher the electric field intensity is generated, so that the plasma concentration generated by discharge is higher, the sterilization and disinfection effect is better, and the particulate matter removal effect is better under the same condition.

Therefore, the same electric field intensity is realized, the corona starting voltage of the needle electrode is far lower than that of the line level and the surface electrode, namely the needle electrode can realize high-concentration plasma discharge at lower voltage, and the corona starting voltage of the ionization needle is lower than 4kv generally. However, for air purification, the action area of the ionizing needle is small, and the effective discharge amount is difficult to meet the requirement of air purification, so that the prior art electric purifiers generally adopt a line level, such as a corona wire. The corona wire discharge greatly increases the discharge area, the effective discharge amount can meet the air purification requirement, but the corona inception voltage of the electrode structure is higher, generally exceeds 8kv, and even reaches more than 10 kv. Under higher ionization voltage, oxygen in the air is ionized to generate high-concentration ozone which even exceeds the national standard, and the ozone is generated for a long time in a living room and can cause harm to human bodies.

In order to ensure the purification effect and reduce the concentration of ozone generated, the existing purifier is developed by adding an ozone net on the purifier so as to decompose or absorb ozone and reduce the concentration of indoor ozone, so that the concentration of ozone generated by the purifier meets the national standard. However, the purifier with such a structure needs to be added with an ozone net, which increases the cost, and the ozone net has a limited ozone elimination capability, so that it is difficult to greatly reduce the ozone concentration under the existing standard, and the ozone net is also a development bottleneck of the ionization type purifier in the prior art.

the electrode structure of the invention is based on the above, the existing corona wire is improved into a novel multi-stage ionization structure, the ionization needle is used as a primary electrode, primary discharge is formed under a lower corona-starting voltage, high-concentration initial discharge electrons are generated, and a higher initial field intensity is formed at a discharge position. A large amount of initial electrons collide with electrons generated by the corona wire to accelerate the ionization of the corona wire, so that snow rolling balls and avalanche type development are formed, the corona wire forms secondary discharge, high-concentration plasma can be generated under lower corona voltage, and the requirements for air sterilization and disinfection are met. Because the electrode structure of the invention has low corona starting voltage, less or no ozone generation can be realized, the ozone concentration in 24 hours is far lower than the national standard, and the harm to human body is reduced.

An electrode structure according to some embodiments of the present invention is shown in fig. 1.

As shown in fig. 1, in some embodiments, the electrode structure of the present invention comprises a corona wire 1 and a number of ionizing pins 2. Corona wire 1 can be the ionization electrode that adopts metallic material such as silver, tungsten, molybdenum, copper to make, and corona wire 1 is linear electrode, and in this embodiment, corona wire 1 sets up to fold line structure, and fold line structure is compared straight line structure, and corona wire 1 length is longer, and the area of discharging is bigger, and corresponding ionization effect is better. In some embodiments, a single corona wire 1 may be set to a diameter of 0.08mm to 2mm, as exemplified by a typical household purifier. Meanwhile, the corona wire 1 can be a solid metal wire, or a hollow or special core (such as a core made of metal silver, platinum, and the like), and in an exemplary implementation, the corona wire 1 is a tungsten wire with a middle core made of silver.

The ionization needle 2 is arranged on the corona wire 1, and the ionization needle 2 is made of metal materials which can realize high-efficiency discharge and are not easy to generate electrochemical corrosion, such as stainless steel, carbon fiber and the like. The ionization needle 2 is a needle-shaped electrode, one end of which is arranged on the corona wire 1 in a contact mode, and the other end of which extends outwards. The ionizing needle 2 is arranged at the corner of the fold line structure, and as shown in fig. 1, an ionizing needle 2 is arranged outside each corner position of the fold line structure of the corona wire 1. The other end of the ionization needle 2 is provided with an ionization tip which generates ionization discharge under the action of voltage to form an initial electrode. In an exemplary implementation, the ionization needle 2 is made of carbon fiber with the diameter of 0.05mm or less, the ultrafine ionization needle 2 generates high-concentration initial electrons at a lower voltage, and then the collision of the primary electrons and the secondary electrons is realized through the secondary corona wire 1 to generate electron avalanche, so that high-concentration plasma is formed.

In some embodiments, in order to prevent the ionizing needle 2 from being oxidized and corroded, the ionizing tip of the ionizing needle 2 is coated with a protective coating, and the protective coating is made of a material with corrosion resistance and oxidation resistance, so that the ionizing needle 2 is protected, and the service life is prolonged. Meanwhile, in some embodiments, the ionization tip of the ionization needle 2 is subjected to antiseptic hydrophobic treatment, so that the ionization tip is ensured to have long discharge life and no discharge loss.

In some embodiments, to improve the discharge effect of the electrode structure, the length of the ionization needle 2 is preferably 1-20 mm, and in an exemplary implementation, the length of the ionization needle 2 is preferably 5 mm.

the electrode structure provided by some embodiments of the invention adopts a multi-stage discharge structure, and can realize a high-efficiency discharge effect at a lower voltage. Through experimental comparison, the electrode structure of the invention has the corona onset voltage lower than 4kv, the corona onset voltage is reduced by over 50 percent compared with the common purifier, and meanwhile, the ozone concentration of 24 hours is lower than 35ppb and is far lower than the national standard under the condition of not having any ozone removing part. Under the condition of simulating the conventional air flow velocity, the electrode structure of the invention can kill H1N1 virus, Escherichia coli, staphylococcus aureus and the like for 1 hour to reach 100 percent. Furthermore, the electrode structure can realize an ultrathin structure, can be applied to various narrow spaces, and realizes efficient sterilization and disinfection of the narrow spaces.

Electrode structures according to further embodiments of the present invention are shown in fig. 2.

as shown in fig. 2, in some embodiments, the electrode structure of the present invention comprises corona wires 1 and a number of ionizing pins 2, the corona wires 1 being arranged in a polygonal structure. For example, as shown in fig. 2, the corona wire 1 is woven or formed into a honeycomb shape, and the hollow hexagonal corona wire 1 structure further improves the discharge area and improves the purification effect. The ionizing needle 2 is disposed outside the polygonal structure of the corona wire 1, and the materials and principles of the corona wire 1 and the ionizing needle 2 are the same as those of the above embodiments, and are not described herein again.

An electrode structure according to further embodiments of the present invention is shown in fig. 3.

As shown in fig. 3, in the present embodiment, the electrode structure of the present invention includes a corona wire 1 and ionizing pins 2, the corona wire 1 is linear, a plurality of fixing sites 3 are distributed on the linear at a certain distance, and a plurality of ionizing pins 2 are spatially and radially distributed on each fixing site 3 with the fixing site 3 as a center. Because the number of the ionization needles 2 of each fixed position 3 is increased, the initial electron concentration generated by the ionization of the tips of the ionization needles 2 is higher, and the ionization effect is further improved. The materials and principles of the corona wire 1 and the ionization needle 2 are the same as those of the above embodiments, and are not described in detail here.

It should be noted that the above description has been given of various embodiments of the electrode structure according to the present invention, and it will be understood by those skilled in the art that other alternative embodiments of the electrode structure of the present invention are possible on the basis of the above disclosure. For example, the structure of the corona wire 1 may be any structure such as an S-shape, other polygon, a circle, etc., and the arrangement form of the ionizing needle 2 on the corona wire 1 may also be any form, which is not limited by the present invention.

Furthermore, the electrode structure of the present invention can be used alone as a sterilization electrode, for example, any one or a combination of the above embodiments can be used to achieve efficient sterilization and disinfection of air at a low corona voltage. Meanwhile, the electrode structure of the invention can also be combined with a dust collecting electrode to realize the dust removal of air. For example, fig. 4 illustrates a purification unit of an electrostatic purification apparatus according to some embodiments of the present invention.

The electrostatic purification device provided by the invention comprises an electrode assembly and a dust collecting plate assembly, wherein the dust collecting plate assembly comprises a plurality of dust collecting plates 4, and the electrode assembly comprises the electrode structure of any one of the above embodiments. In the purification unit shown in fig. 4, the electrode structure is arranged close to the dust collecting plate 4, based on the above principle, the electrode structure can generate high-concentration plasma under low corona voltage, the high-energy plasma impacts pollutant molecules in the air, such as dust, so as to charge the pollutant molecules, the dust collecting plate 4 is grounded to form low potential, so that the charged pollutant molecules move to the dust collecting plate 4 from the high potential and are adsorbed on the dust collecting plate 4, and thus, the air dust removal and purification are realized.

In some embodiments, the electrostatic purification apparatus of the present invention further comprises a repelling polar plate 5, wherein the repelling polar plate 5 is disposed between the dust collecting plates 4, and the repelling polar plate 5 is connected with a high electric potential, so that a potential difference is formed between the repelling polar plate 5 and the dust collecting plates 4, thereby accelerating the movement of pollutant molecules and achieving a faster dust removal effect.

as shown in FIG. 5, the three groups of purification units are arranged in series to realize high-efficiency sterilization and dust removal of the purification equipment. The number of the purification units can be set according to the requirement, and is not limited to three groups. The multiple electrode structures of the purification apparatus can also be combined in various embodiments to realize applications in different places, which is not limited by the present invention.

In some embodiments, the electrostatic purification apparatus of the present invention may be a household air purifier, an air disinfection apparatus, or the like. The purification equipment disclosed by the invention can realize efficient sterilization and disinfection under low voltage, can also realize efficient dust removal, can remove particles in air and can realize an ionization purification technology without ozone or with less ozone.

It should be understood that the above embodiments are only examples for clearly illustrating the present invention, and are not intended to limit the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.