Purifier box body, electric field selection method and system, and electrostatic purifier

Abstract

The present invention provides a purifier housing, an electric field selection method and system, and an electrostatic purifier. The purifier housing is provided with an odd number of electric field purification zones, including a long electric field purification zone and at least two short electric field purification zones. The electric field purification zones are arranged horizontally on the air inlet side cross section, with the long electric field purification zone located in the middle of the zone and the short electric field purification zones symmetrically arranged on either side of the long electric field purification zone. The electric field length of the long electric field purification zone is greater than that of the short electric field purification zone, and the electric field lengths of each pair of symmetrically arranged short electric field purification zones are the same. In this method, by providing electric field purification zones with different electric field lengths in the purifier housing, each electric field in the purifier is used evenly, thereby ensuring the purification effect of the purifier and extending the service life of the purifier.

Description

Technical Field

[0001] The present invention relates to the technical field of electrostatic purifiers, and in particular to a purifier box, an electric field selection method and system, and an electrostatic purifier. Background Art

[0002] Electrostatic fume purifiers primarily utilize a high-voltage electrostatic field to ionize exhaust gases, charging the oil mist particles. Under the influence of the electric field, the charged oil mist particles migrate to a collection plate, where they accumulate and flow under gravity into the oil sump, ultimately being discharged through the drain pipe.

[0003] During the adsorption process, the electrostatic field in existing electrostatic purifiers is more dirty in the middle, attracting more oil and dirt, while the fields on the sides are cleaner. This results in uneven use of the purifier's electric field and reduced purification efficiency. Furthermore, if the cleaning cycle is too long, the middle field becomes difficult to clean. If the cleaning cycle is too short, the fields on the sides remain relatively clean, resulting in an over-cleaning process. This exacerbates the corrosion of the cleaning agent on the electric field and shortens the purifier's lifespan. Summary of the Invention

[0004] In view of this, the object of the present invention is to provide a purifier housing, an electric field selection method and system, and an electrostatic purifier, so that each electric field in the purifier is used evenly, thereby ensuring the purification effect of the purifier and, at the same time, extending the service life of the purifier.

[0005] In the first aspect, an embodiment of the present invention provides a purifier housing, which is applied to an electrostatic purifier, the electrostatic purifier including a pre-filter connected to the purifier housing; an odd number of electric field purification zones are arranged in the purifier housing, the electric field purification zone including a long electric field purification zone and at least two short electric field purification zones; wherein the long electric field purification zone is located in the middle position of the electric field purification zone, and the short electric field purification zones are symmetrically arranged on both sides of the long electric field purification zone; the electric field length of the long electric field purification zone is greater than the electric field length of the short electric field purification zone; the electric field length of each pair of symmetrically arranged short electric field purification zones is the same; the electric field purification zone is used to generate an electric field and adsorb oil fume particles in the oil fume filtered by the pre-filter.

[0006] Furthermore, the electric field purification zone includes an ionization zone and an adsorption zone; the ionization zone includes tungsten filaments and plates arranged alternately in parallel; the adsorption zone includes positive plates and negative plates arranged alternately in parallel; the ionization zone and the adsorption zone are connected; the ionization zone of the long electric field and the ionization zone of the short electric field are arranged along the same level; the ionization zone is used to generate corona discharge based on the high voltage of the tungsten filament, so that the particles in the air are charged, thereby making the oil fume particles negatively charged; the adsorption zone is used to make the negative plate adsorb the charged oil fume particles.

[0007] Furthermore, the electric field purification area also includes two T-shaped feet; the T-shaped feet are arranged on both sides of the bottom of the electric field; the length of the T-shaped feet is the same as the electric field width of the electric field purification area; the purifier box also includes at least three guide rails; the guide rails match the T-shaped feet; the guide rails include common guide rails, long electric field guide rails and short electric field guide rails, the common guide rails are arranged on the air inlet side, the short electric field guide rails are arranged between the common guide rails and the long electric field guide rails, and the long electric field guide rails are farthest from the common guide rails; wherein, each pair of short electric field purification areas shares one short electric field guide rail; the T-shaped feet are used to make the electric field purification area slide into the interior of the purifier box along the guide rails.

[0008] In a second aspect, an embodiment of the present invention provides an electric field selection method, which is applied to the purifier box of any of the above items; the method includes: determining the electric field width of the long electric field purification zone, the number of electric fields in the short electric field purification zone and the electric field width of the short electric field purification zone according to the viscous effect of the steady-state flowing fluid; determining the adsorption zone length of the long electric field according to the preset electric field adsorption zone calculation rule; determining the adsorption zone length of the short electric field purification zone according to the adsorption zone length of the long electric field purification zone and the preset long electric field-short electric field correspondence; determining the electric field height of the long electric field purification zone according to the preset electric field effective cross-sectional area calculation rule; wherein the electric field height of the short electric field purification zone is the same as the electric field height of the long electric field purification zone; determining the specifications of the long electric field purification zone and the specifications of the short electric field purification zone respectively according to the preset ionization zone length, the adsorption zone length of the long electric field purification zone, the electric field width of the long electric field purification zone, the electric field height of the long electric field purification zone, the adsorption zone length of the short electric field purification zone, the electric field width of the short electric field purification zone and the electric field height of the short electric field purification zone.

[0009] Furthermore, the method also includes: determining the sum of the preset ionization zone length and the adsorption zone length of the long electric field purification zone as the box length of the purifier box; determining the sum of the electric field widths of all short electric field purification zones and the electric field widths of the long electric field purification zone as the box width of the purifier box; and determining the electric field height of the short electric field purification zone or the electric field height of the long electric field purification zone as the box height of the purifier box.

[0010] Furthermore, according to the viscous effect of the steady-state flow fluid, the steps of determining the electric field width of the long electric field purification zone, the number of electric fields in the short electric field purification zone, and the electric field width of the short electric field purification zone include: S1: calculating the electric field width of the long electric field purification zone and the electric field width of the first short electric field according to the preset electric field width calculation formula; S2: determining the sum of the electric field width of the long electric field purification zone and the electric field width of the two first short electric fields as the box width of the purifier box; S3: comparing the electric field width of the first short electric field with one-third of the box width of the purifier box; S4: if the electric field width of the first short electric field is less than or equal to one-third of the box width of the purifier box, determining the number of electric fields in the short electric field purification zone to be 2, and the electric field width of the first short electric field is 2. The electric field width is the electric field width of the short electric field; S5: if the first short electric field width is greater than one-third of the box width of the purifier box, the second short electric field width is obtained by subtracting the first short electric field width from one-third of the box width of the purifier box, and the number of electric fields in the short electric field purification area is determined to be 4, and the electric field width of the short electric field purification area includes the first short electric field width and the second short electric field width; S6: repeat steps S3-S5 until the nth short electric field width is less than or equal to one-third of the box width of the purifier box, and the number of electric fields in the short electric field purification area is determined to be 2n, and the electric field width of the short electric field includes all electric field widths from the first short electric field width to the nth short electric field width.

[0011] Furthermore, the adsorption zone of the electric field purification zone includes positive plates and negative plates arranged alternately in parallel; after the step of determining the electric field width of the long electric field purification zone, the number of electric fields in the short electric field purification zone, and the electric field width of the short electric field purification zone based on the viscous effect of the steady-state flowing fluid, the method also includes: determining the number of long electric field positive plates and the number of long electric field negative plates in the adsorption zone of the long electric field purification zone based on the preset spacing between the positive plates and the negative plates and the electric field width of the long electric field; determining the number of short electric field positive plates and the number of short electric field negative plates in the adsorption zone of each short electric field purification zone based on the preset spacing and the electric field width of the short electric field.

[0012] Furthermore, the electric field purification zone includes a connected ionization zone and an adsorption zone, and the oil fume particles that pass through the ionization zone and enter the adsorption zone are charged particles; the step of determining the adsorption zone length of the long electric field purification zone according to the preset electric field adsorption zone calculation rules includes: determining the acceleration of the charged particles entering the adsorption zone of the long electric field purification zone according to the preset adsorption zone voltage, preset spacing and charged particle mass in the adsorption zone of the long electric field purification zone; determining the adsorption time of the charged particles to the positive plate of the adsorption zone according to the movement direction of the charged particles; and determining the adsorption zone length of the long electric field purification zone according to the preset optimal flow rate and adsorption time.

[0013] Furthermore, the step of determining the length of the adsorption zone of the short electric field purification zone based on the length of the adsorption zone of the long electric field purification zone and the preset long electric field-short electric field correspondence includes: determining the flow rate of the adsorption zone of the short electric field purification zone to be half of the preset optimal flow rate based on the preset long electric field-short electric field correspondence; and determining the length of the adsorption zone of the short electric field purification zone based on the flow rate and adsorption time of the adsorption zone of the short electric field purification zone.

[0014] In a third aspect, an embodiment of the present invention provides an electric field selection system, which is applied to the purifier box of any of the above items; the system includes: an electric field width determination module, which is used to determine the electric field width of the long electric field purification zone, the number of electric fields in the short electric field purification zone and the electric field width of the short electric field purification zone according to the viscous effect of the steady-state flow fluid; an adsorption zone length determination module, which is used to determine the adsorption zone length of the long electric field purification zone according to the preset electric field adsorption zone calculation rules; the adsorption zone length determination module is also used to determine the adsorption zone length of the short electric field purification zone according to the adsorption zone length of the long electric field purification zone and the preset long electric field purification zone-short electric field purification zone correspondence. The adsorption zone length of the field purification zone; the electric field height determination module is used to determine the electric field height of the long electric field purification zone according to the preset electric field effective cross-sectional area calculation rules; wherein the electric field height of the short electric field purification zone is the same as the electric field height of the long electric field purification zone; the electric field specification determination module is used to determine the specifications of the long electric field purification zone and the specifications of the short electric field purification zone according to the preset ionization zone length, the adsorption zone length of the long electric field purification zone, the electric field width of the long electric field purification zone, the electric field height of the long electric field purification zone, the adsorption zone length of the short electric field purification zone, the electric field width of the short electric field purification zone and the electric field height of the short electric field purification zone.

[0015] In a fourth aspect, an embodiment of the present invention provides an electrostatic purifier, comprising a pre-filter and a purifier housing according to any one of the above items; the pre-filter and the purifier housing are connected in sequence.

[0016] The embodiment of the present invention provides a purifier housing, an electric field selection method and system, and an electrostatic purifier, which are applied to the electrostatic purifier, wherein the electrostatic purifier includes a pre-filter connected to the purifier housing; an odd number of electric field purification zones are provided in the purifier housing, and the electric field purification zones include a long electric field purification zone and at least two short electric field purification zones; wherein the electric field purification zones are horizontally arranged on the air inlet side cross section, the long electric field purification zone is in the middle of the electric field purification zone, and the short electric field purification zones are symmetrically arranged on both sides of the long electric field purification zone; the electric field length of the long electric field purification zone is greater than the electric field length of the short electric field purification zone; the electric field length of each pair of symmetrically arranged short electric field purification zones is the same; the electric field purification zone is used to generate an electric field and adsorb oil fume particles in the oil fume filtered by the pre-filter. In this method, by setting electric field purification zones with different electric field lengths in the purifier housing, each electric field in the purifier is used evenly, thereby ensuring the purification effect of the purifier and extending the service life of the purifier.

[0017] Other features and advantages of the present invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the present invention.

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A top view of the purifier housing provided in Example 1 of the present invention;

[0021] Figure 2 A schematic diagram of an electric field purification area provided in Example 1 of the present invention;

[0022] Figure 3 A cross-sectional view of a long electric field purification area provided in Example 1 of the present invention;

[0023] Figure 4 A cross-sectional view of a short electric field purification area provided in Example 1 of the present invention;

[0024] Figure 5 A flow chart of the electric field selection method provided in the second embodiment of the present invention;

[0025] Figure 6 The laminar velocity distribution diagram provided in the second embodiment of the present invention;

[0026] Figure 7 The turbulent velocity distribution diagram provided in the second embodiment of the present invention;

[0027] Figure 8 Flowchart of a method for obtaining the electric field width of a long electric field purification zone, the number of electric fields in a short electric field purification zone, and the electric field width of a short electric field purification zone provided in the second embodiment of the present invention;

[0028] Figure 9 Flowchart of the method for calculating the specifications of the purifier box provided in the second embodiment of the present invention;

[0029] Figure 10 Schematic diagram of the electric field selection system provided in the third embodiment of the present invention;

[0030] Figure 11Schematic diagram of the electrostatic purifier provided in Example 4 of the present invention.

[0031] Icons: 1-long electric field purification area; 2-short electric field purification area; 3-ionization area; 4-adsorption area; 5-positive plate; 6-negative plate; 7-T-shaped foot; 8-guide rail groove; 9-electric field width determination module; 10-adsorption area length determination module; 11-electric field height determination module; 12-electric field specification determination module; 13-pre-filter; 14-purifier box. DETAILED DESCRIPTION

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0033] To facilitate understanding of this embodiment, the embodiment of the present invention is described in detail below.

[0034] Example 1:

[0035] Figure 1 This is a top view of the purifier housing provided in Example 1 of the present invention.

[0036] The purifier box is applied to the electrostatic purifier, and the electrostatic purifier includes a pre-filter connected to the purifier box.

[0037] Reference Figure 1 An odd number of electric field purification zones are arranged in the purifier box, and the electric field purification zones include a long electric field purification zone 1 and at least two short electric field purification zones 2.

[0038] Here, the number of electric field purification zones is 3 or more.

[0039] Among them, the long electric field purification zone 1 is located in the middle position of the electric field purification zone, and the short electric field purification zone 2 is symmetrically arranged on both sides of the long electric field purification zone 1; the electric field length of the long electric field purification zone 1 is greater than the electric field length of the short electric field purification zone 2; the electric field lengths of each pair of symmetrically arranged short electric field purification zones 2 are the same.

[0040] Here, the purifier box is the box part that carries the electric field. In addition, the purifier box also includes the oil circuit, pre-filter tank, flange, etc.

[0041] The long electric field purification zone and the short electric field purification zone are both perpendicular to the air inlet direction of the purifier box, and the long electric field purification zone and the short electric field purification zone are horizontally arranged on the air inlet side of the purifier box.

[0042] The electric field purification area is used to generate an electric field and adsorb oil fume particles in the oil fume after being filtered by the pre-filter.

[0043] In one embodiment, referring to Figure 2 The electric field purification zone includes an ionization zone 3 and an adsorption zone 4; the ionization zone 3 includes tungsten wires and plates arranged alternately in parallel; the adsorption zone 4 includes positive plates 5 and negative plates 6 arranged alternately in parallel.

[0044] Reference Figure 1 and Figure 2 , the ionization zone 3 and the adsorption zone 4 are connected, and the ionization zone of the long electric field and the ionization zone of the short electric field are arranged along the same level.

[0045] Here, the ionization zone is arranged on the air inlet side of the purifier housing, the ionization zone is connected to the adsorption zone, and both the ionization zone and the adsorption zone are perpendicular to the air inlet direction of the purifier housing.

[0046] The long electric field ionization zone and the short electric field ionization zone are arranged horizontally on the air inlet side of the purifier box.

[0047] The ionization zone 3 is used to generate corona discharge according to the high voltage of the tungsten filament to charge the particles in the air, thereby making the oil smoke particles negatively charged.

[0048] The adsorption area 4 is used to allow the negative plate 6 to adsorb charged oil smoke particles.

[0049] Here, the charged oil smoke particles are adsorbed on the positive plate in the adsorption area under the action of the electric field force and airflow to achieve the purpose of purification.

[0050] In one embodiment, the electric field purification zone further includes two T-shaped feet 7 ; the T-shaped feet 7 are disposed on both sides of the bottom of the electric field; and the length of the T-shaped feet 7 is the same as the electric field width of the electric field purification zone.

[0051] Here, refer to Figure 3 and Figure 4 Each electric field purification area includes two T-shaped feet 7 arranged on both sides of the bottom.

[0052] Reference Figure 1 The purifier housing further includes at least three guide rail grooves 8 ; the guide rail grooves 8 match the T-shaped base feet 7 .

[0053] The guide rail groove 8 includes a common guide rail groove, a long electric field guide rail groove and a short electric field guide rail groove. The common guide rail groove is arranged on the air inlet side, and the short electric field guide rail groove is arranged between the common guide rail groove and the long electric field guide rail groove. The long electric field guide rail groove is farthest from the common guide rail groove; among them, each pair of short electric field purification areas shares one short electric field guide rail groove.

[0054] Here, each additional pair of short electric field purification zones 2 corresponds to an additional short electric field guide groove.

[0055] The T-shaped foot 7 is used to allow the electric field purification area to slide along the guide rail groove 8 into the interior of the purifier box.

[0056] Here, the T-shaped foot 7 enables the electric field purification area to move freely in the horizontal direction of the air inlet side of the purifier housing.

[0057] Specifically, when there are three electric field purification zones, the short electric field purification zone 2 and the long electric field purification zone 1 slide alternately along the guide rail groove 8 into the purifier housing without affecting the installation of the previous and subsequent electric field purification zones. The T-shaped foot 7 allows the corresponding electric field purification zone to be positioned within the guide rail groove 8 in both the flue gas direction and the vertical direction, moving only in the horizontal direction perpendicular to the flue gas, facilitating the installation of the electric field purifier within the purifier housing.

[0058] An embodiment of the present invention provides a purifier housing, which is applied to an electrostatic purifier. The electrostatic purifier includes a pre-filter connected to the purifier housing; an odd number of electric field purification zones are provided in the purifier housing, and the electric field purification zones include a long electric field purification zone and at least two short electric field purification zones; wherein the electric field purification zones are arranged horizontally on the air inlet side cross section, the long electric field purification zone is in the middle of the electric field purification zone, and the short electric field purification zones are symmetrically arranged on both sides of the long electric field purification zone; the electric field length of the long electric field purification zone is greater than the electric field length of the short electric field purification zone; the electric field length of each pair of symmetrically arranged short electric field purification zones is the same; the electric field purification zone is used to generate an electric field and adsorb oil fume particles in the oil fume filtered by the pre-filter. In this method, by setting electric field purification zones with different electric field lengths in the purifier housing, each electric field in the purifier is used evenly, thereby ensuring the purification effect of the purifier and extending the service life of the purifier.

[0059] Example 2:

[0060] Figure 5 This is a flow chart of the electric field selection method provided in Example 2 of the present invention.

[0061] Reference Figure 2 , the electric field selection method applied to the above purifier box includes:

[0062] Step S101 , determining the electric field width of the long electric field purification zone, the number of electric fields in the short electric field purification zone, and the electric field width of the short electric field purification zone according to the viscosity effect of the steady-state flowing fluid.

[0063] Here, the electric field purification zone includes a connected ionization zone and an adsorption zone, and the oil smoke particles that pass through the ionization zone and enter the adsorption zone are charged particles.

[0064] Reference Figure 6 and Figure 7According to the viscosity effect of steady-state flow fluid, the velocity of charged particles flowing through each point on any cross-section of the electric field purification area varies along the diameter of the electric field purification area. It is the largest at the center of the cross-section of the electric field purification area, and the closer to the wall of the electric field purification area, the smaller the velocity is. The velocity at the wall of the electric field purification area is zero, that is, the velocity of charged particles on the cross-section of the electric field purification area presents a certain velocity gradient distribution.

[0065] According to the viscosity effect of steady-state flow fluid, the flow type of charged particles in the electric field purification zone is divided according to the Reynolds number Re. When Re≤2000, the flow type of charged particles is laminar flow. When Re≤4000, the flow type of charged particles is turbulent flow. When the Re value is in the range of 2000~4000, the charged particles belong to mixed flow (which may be laminar flow or turbulent flow). Whether it is laminar flow or turbulent flow, the velocity of charged particles flowing through each point on any cross-section of the electric field purification zone varies along the diameter of the electric field purification zone. It is the largest at the center of the cross-section of the electric field purification zone. The closer to the wall of the electric field purification zone, the smaller the velocity. The velocity at the wall of the electric field purification zone is zero. In laminar flow, the velocity is distributed along the diameter of the electric field purification zone according to the parabolic law, and the average value of the velocity at each point on the cross-section is the optimal flow velocity S. max In turbulent flow, the velocity of the main turbulent body is quite large, and the charged particles close to the wall of the electric field purification zone (turbulent boundary layer) are still laminar, which conforms to the velocity gradient law of laminar flow.

[0066] Among them, the calculation method of the electric field width can also be used to select the efficiency and width of the primary filter at the front end of the electrostatic purifier. A primary filter or filter with higher purification efficiency can be set in the middle, and filters with lower purification efficiency can be set at both ends, and arranged in a stepped manner according to the cross-sectional size.

[0067] In one embodiment, referring to Figure 8 , step S101 includes:

[0068] Step S1: Calculate the electric field width of the long electric field purification zone and the electric field width of the first short electric field according to a preset electric field width calculation formula.

[0069] Here, the electric field width of the electric field purification zone is determined according to the thickness of the turbulent boundary layer (laminar inner layer).

[0070] Among them, the preset electric field width calculation formula is shown in formula (1):

[0071] (1)

[0072] in, is the electric field width of the electric field purification zone; 61.5 is the preset empirical coefficient; D is the equivalent diameter of the cross section of the electric field purification zone; Re is the Reynolds number, ; is the fluid density of oil smoke particles; is the viscosity coefficient of the oil smoke particles.

[0073] Specifically, and It is measured in real time by sensors.

[0074] When the cross section of the electric field purification area is an elliptical cross section, let the major axis of the elliptical cross section be c and the minor axis be d. .

[0075] When the cross section of the electric field purification area is a rectangular cross section, let the major axis of the rectangular cross section be e and the minor axis be f. .

[0076] Specifically, the electric field width of the long electric field purification zone is calculated according to formula (1): and the first short electric field width .

[0077] Step S2: The sum of the electric field width of the long electric field purification zone and the electric field widths of the two first short electric fields is determined as the box width of the purifier box.

[0078] Here, the width of the purifier box is L. .

[0079] Step S3: comparing the electric field width of the first short electric field with one third of the box width of the purifier box.

[0080] Here, when When the laminar flow inner electric field is used, multiple short electric field purification zones can be set up, that is, more than 3 odd-numbered electric field purification zones of different lengths are set up in the entire purifier box.

[0081] Step S4: If the first short electric field width is less than or equal to one third of the width of the purifier housing, the number of electric fields in the short electric field purification zone is determined to be 2, and the first short electric field width is the electric field width of the short electric field.

[0082] Here, the electric field width of the short electric field is ,at this time, .

[0083] Step S5: If the first short electric field width is greater than one-third of the box width of the purifier box, the second short electric field width is obtained by subtracting the first short electric field width from one-third of the box width of the purifier box, and the number of electric fields in the short electric field purification area is determined to be 4. The electric field width of the short electric field purification area includes the first short electric field width and the second short electric field width.

[0084] Here, the width of the second electric field is ,at this time That is, the electric field width of the two symmetrical short electric field purification zones near the long electric field purification zone is , the electric field width of the two symmetrical short electric field purification zones away from the long electric field purification zone is .

[0085] Step S6: Repeat steps S3-S5 until the electric field width of the nth short electric field is less than or equal to one-third of the box width of the purifier box, and determine that the number of electric fields in the short electric field purification area is 2n, and the electric field width of the short electric field includes all electric field widths from the first short electric field width to the nth short electric field width.

[0086] In one embodiment, the adsorption region of the electric field purification zone includes positive plates and negative plates that are alternately arranged in parallel.

[0087] After step S101, the method further includes:

[0088] The number of long electric field positive plates and the number of long electric field negative plates in the adsorption zone of the long electric field purification zone are determined according to the preset spacing between the positive plate and the negative plate and the electric field width of the long electric field.

[0089] Here, the preset distance between the positive and negative plates is d. The number of long electric field negative plates in the adsorption zone of the long electric field purification zone is , the number of long electric field positive plates in the adsorption zone of the long electric field purification zone is .

[0090] The number of short electric field positive plates and the number of short electric field negative plates in the adsorption zone of each short electric field purification zone are determined according to the preset spacing and the electric field width of the short electric field.

[0091] Here, the number of long electric field negative plates in the adsorption zone of the short electric field purification zone is , the number of long electric field positive plates in the adsorption zone of the short electric field purification zone is .

[0092] Step S102 : determining the length of the long electric field adsorption region according to a preset electric field adsorption region calculation rule.

[0093] Here, the electric field purification zone includes a connected ionization zone and an adsorption zone, and the oil smoke particles that pass through the ionization zone and enter the adsorption zone are charged particles.

[0094] In one embodiment, step S102 includes:

[0095] The acceleration of the charged particles entering the adsorption zone of the long electric field purification zone is determined according to a preset adsorption zone voltage, a preset distance and a mass of the charged particles in the adsorption zone of the long electric field purification zone.

[0096] Here, the flow of charged particles in the long electric field purification zone is generally turbulent. When turbulent, the velocity of the turbulent main body is stable. The electric field degree of the adsorption zone of the long electric field purification zone is based on the maximum velocity, that is, the preset optimal flow velocity S max calculate.

[0097] Specifically, the charged particles are charged in the ionization zone and are adsorbed onto the electrode after entering the adsorption zone. The acceleration a of the charged particles entering the adsorption zone is shown in formula (2):

[0098] (2)

[0099] Wherein, a is the acceleration of the charged particle entering the adsorption area, u is the voltage of the adsorption area, d is the preset distance between the positive plate and the negative plate, and m is the mass of the charged particle.

[0100] The adsorption time of the charged particles to the positive plate in the adsorption area is determined according to the movement direction of the charged particles.

[0101] Here, the charged particles are driven toward the positive plate in the adsorption area along a parabola under the action of the electric field force and the airflow. The vertical movement distance y of the charged particles to the positive plate is as shown in formula (3):

[0102] (3)

[0103] Where y is the vertical distance of the charged particles moving to the positive plate, and t is the adsorption time.

[0104] Furthermore, the adsorption time t is shown in formula (4):

[0105] (4)

[0106] The adsorption zone length of the long electric field purification zone is determined according to the preset optimal flow rate and adsorption time.

[0107] Here, the dust collection length of the adsorption zone where the charged particles need to be adsorbed, that is, the adsorption zone length x2 of the long electric field purification zone, is as shown in formula (5):

[0108] (5)

[0109] Where s=s max , then the adsorption zone length x2 of the long electric field purification zone is expressed as formula (6):

[0110] (6)

[0111] Specifically, through the s of the purifier box max It is generally taken as 2~3m / s, the adsorption zone voltage is generally 6~7kV, and d is taken as 7~8mm.

[0112] Step S103 , determining the adsorption zone length of the short electric field purification zone according to the adsorption zone length of the long electric field purification zone and a preset long electric field-short electric field correspondence relationship.

[0113] In one embodiment, step S103 includes:

[0114] According to the preset long electric field-short electric field correspondence relationship, the flow velocity of the adsorption zone in the short electric field purification zone is determined to be half of the preset optimal flow velocity.

[0115] Here, the flow near the wall of the short electric field purification zone is still laminar, which conforms to the velocity gradient law of laminar flow. The electric field length of the short electric field purification zone is calculated according to the average velocity s of the laminar flow section. 平 Calculate, and .

[0116] The length of the adsorption zone of the short electric field purification zone is determined according to the flow rate and adsorption time of the adsorption zone of the short electric field purification zone.

[0117] Here, the adsorption zone length of the short electric field purification zone is half of the adsorption zone length of the long electric field purification zone. The adsorption zone length of the short electric field purification zone is shown in formula (7):

[0118] (7)

[0119] Step S104 , determining the electric field height of the long electric field purification zone according to a preset electric field effective cross-sectional area calculation rule; wherein the electric field height of the short electric field purification zone is the same as the electric field height of the long electric field purification zone.

[0120] Here, the effective cross-sectional area of the electric field purification zone on the windward side of the purifier box is A, which is equal to the length of the electric field X. 总 It can be concluded that the height H of the effective area of the electric field is as shown in formula (8):

[0121] (8)

[0122] Among them, A is the effective cross-sectional area of the electric field purification zone on the windward side of the purifier box, , Q is the air volume measured according to actual conditions. When it is a long electric field purification area, Q=Q1, s=s max ; When it is a short electric field purification area, Q=Q2, s=s 平 = .X 总 is the total length of the electric field purification zone. When it is a long electric field purification zone, ; When it is a short electric field purification area, .

[0123] The electric field height H in the electric field purification area is shown in formula (9):

[0124] (9)

[0125] Step S105, determining the specifications of the long electric field purification zone and the short electric field purification zone respectively according to the preset ionization zone length, the adsorption zone length of the long electric field purification zone, the electric field width of the long electric field purification zone, the electric field height of the long electric field purification zone, the adsorption zone length of the short electric field purification zone, the electric field width of the short electric field purification zone and the electric field height of the short electric field purification zone.

[0126] Here, the ionization zone lengths of the long electric field purification zone and the short electric field purification zone are the same, both being preset ionization zone lengths. The preset ionization zone lengths are calculated according to existing calculation methods and are not described in detail in this embodiment. The ionization zone voltage is generally twice the adsorption zone voltage.

[0127] In one embodiment, referring to Figure 9 , the calculation method for the specifications of the purifier box includes:

[0128] Step S201 : The sum of the preset ionization zone length and the adsorption zone length of the long electric field purification zone is determined as the box length of the purifier box.

[0129] Here, the length of the purifier housing is the length of the long electric field purification zone, that is, the sum of the length of the ionization zone and the length of the adsorption zone of the long electric field purification zone.

[0130] Step S202: The sum of the electric field widths of all the short electric field purification zones and the electric field widths of the long electric field purification zones is determined as the box width of the purifier box.

[0131] Here, the box width L of the purifier box is the sum of the electric field widths of all short electric field purification zones and the electric field widths of the long electric field purification zones.

[0132] Step S203: determining the electric field height of the short electric field purification zone or the electric field height of the long electric field purification zone as the box height of the purifier box.

[0133] Here, the electric field height is the height of the purifier box.

[0134] An embodiment of the present invention provides an electric field selection method for an electrostatic purifier, wherein the electrostatic purifier includes a pre-filter connected to a purifier housing; an odd number of electric field purification zones are provided in the purifier housing, the electric field purification zones including a long electric field purification zone and at least two short electric field purification zones; wherein the electric field purification zones are arranged horizontally on the air inlet side cross section, the long electric field purification zone is located in the middle of the electric field purification zone, and the short electric field purification zones are symmetrically arranged on both sides of the long electric field purification zone; the electric field length of the long electric field purification zone is greater than that of the short electric field purification zone; the electric field lengths of each pair of symmetrically arranged short electric field purification zones are the same; the electric field purification zone is used to generate an electric field and adsorb oil fume particles in the oil fume filtered by the pre-filter. In this method, the length, width, and height of the electric field purification zone are calculated by the velocity gradient law of laminar flow, and electric field purification zones with different electric field lengths are provided in the purifier housing, so that each electric field in the purifier is used evenly, thereby ensuring the purification effect of the purifier and extending the service life of the purifier.

[0135] Example 3:

[0136] Figure 10 Schematic diagram of the electric field selection system provided in Example 3 of the present invention.

[0137] Reference Figure 10 The electric field selection system applied to the above purifier box includes:

[0138] The electric field width determination module 9 is used to determine the electric field width of the long electric field purification zone, the number of electric fields in the short electric field purification zone, and the electric field width of the short electric field purification zone according to the viscosity effect of the steady-state flow fluid.

[0139] The adsorption zone length determination module 10 is used to determine the adsorption zone length of the long electric field purification zone according to a preset electric field adsorption zone calculation rule.

[0140] The adsorption zone length determining module 10 is further configured to determine the adsorption zone length of the short electric field purification zone according to the adsorption zone length of the long electric field purification zone and a preset long electric field purification zone-short electric field purification zone correspondence relationship.

[0141] The electric field height determination module 11 is used to determine the electric field height of the long electric field purification zone according to a preset electric field effective cross-sectional area calculation rule; wherein the electric field height of the short electric field purification zone is the same as the electric field height of the long electric field purification zone.

[0142] The electric field specification determination module 12 is used to determine the specifications of the long electric field purification zone and the short electric field purification zone according to the preset ionization zone length, the adsorption zone length of the long electric field purification zone, the electric field width of the long electric field purification zone, the electric field height of the long electric field purification zone, the adsorption zone length of the short electric field purification zone, the electric field width of the short electric field purification zone and the electric field height of the short electric field purification zone.

[0143] An embodiment of the present invention provides an electric field selection system for an electrostatic purifier, wherein the electrostatic purifier includes a pre-filter connected to a purifier housing; an odd number of electric field purification zones are provided in the purifier housing, the electric field purification zones including a long electric field purification zone and at least two short electric field purification zones; wherein the electric field purification zones are arranged horizontally on the air inlet side cross section, the long electric field purification zone is located in the middle of the electric field purification zone, and the short electric field purification zones are symmetrically arranged on both sides of the long electric field purification zone; the electric field length of the long electric field purification zone is greater than that of the short electric field purification zone; the electric field lengths of each pair of symmetrically arranged short electric field purification zones are the same; the electric field purification zone is used to generate an electric field and adsorb oil fume particles in oil fume filtered by the pre-filter. In this method, the length, width, and height of the electric field purification zone are calculated by the velocity gradient law of laminar flow, and electric field purification zones with different electric field lengths are provided in the purifier housing, so that each electric field in the purifier is used evenly, thereby ensuring the purification effect of the purifier and extending the service life of the purifier.

[0144] Example 4:

[0145] Figure 11 Schematic diagram of the electrostatic purifier provided in Example 4 of the present invention.

[0146] Reference Figure 11 The electrostatic purifier includes: a pre-filter 13, and the above-mentioned purifier box 14; the pre-filter 13 and the purifier box 14 are connected in sequence.

[0147] An embodiment of the present invention provides an electrostatic purifier. By setting electric field purification zones with different electric field lengths in a purifier housing, each electric field in the purifier is used evenly, thereby ensuring the purification effect of the purifier and extending the service life of the purifier.

[0148] The computer program product provided in the embodiments of the present invention includes a computer-readable storage medium storing program code. The instructions included in the program code can be used to execute the methods described in the previous method embodiments. For specific implementation, please refer to the method embodiments and will not be repeated here.

[0149] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described systems and devices can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0150] In addition, in the description of the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0151] If the functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the portion that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage media include various media capable of storing program code, such as USB flash drives, mobile hard drives, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical disks.

[0152] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0153] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present invention, which are used to illustrate the technical solutions of the present invention rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the above-mentioned embodiments, ordinary technicians in this field should understand that any technician familiar with this technical field can still modify the technical solutions recorded in the above-mentioned embodiments within the technical scope disclosed by the present invention, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered by the protection scope of the present invention.

Claims

1. A purifier box, used in an electrostatic purifier, characterized in that: The electrostatic purifier includes a pre-filter connected to the purifier housing; an odd number of electric field purification zones are provided in the purifier housing, and the electric field purification zones include a long electric field purification zone and at least two short electric field purification zones; The long electric field purification zone is located in the middle of the electric field purification zone, and the short electric field purification zones are symmetrically arranged on both sides of the long electric field purification zone; the electric field length of the long electric field purification zone is greater than the electric field length of the short electric field purification zone; and the electric field lengths of each pair of symmetrically arranged short electric field purification zones are the same; The electric field purification zone is used to generate an electric field and absorb oil fume particles in the oil fume filtered by the pre-filter; The long electric field purification zone and the short electric field purification zone are both perpendicular to the air inlet direction of the purifier housing, and the long electric field purification zone and the short electric field purification zone are horizontally arranged on the air inlet side of the purifier housing.

2. The purifier housing according to claim 1, characterized in that: The electric field purification zone includes an ionization zone and an adsorption zone; the ionization zone includes tungsten filaments and plates arranged alternately in parallel; the adsorption zone includes positive plates and negative plates arranged alternately in parallel; The ionization zone and the adsorption zone are connected; the ionization zone of the long electric field and the ionization zone of the short electric field are arranged along the same level; The ionization zone is used to generate corona discharge according to the high voltage of the tungsten filament to charge the particles in the air, thereby making the oil smoke particles negatively charged; The adsorption area is used to enable the negative electrode plate to adsorb the charged oil smoke particles.

3. The purifier housing according to claim 1, characterized in that: The electric field purification area further comprises two T-shaped feet; the T-shaped feet are respectively arranged on both sides of the bottom of the electric field; the length of the T-shaped feet is the same as the electric field width of the electric field purification area; The purifier housing further comprises at least three guide rail grooves; the guide rail grooves match the T-shaped foot; The guide rail grooves include a common guide rail groove, a long electric field guide rail groove and a short electric field guide rail groove. The common guide rail groove is arranged on the air inlet side, and the short electric field guide rail groove is arranged between the common guide rail groove and the long electric field guide rail groove. The long electric field guide rail groove is farthest from the common guide rail groove. Each pair of the short electric field purification areas shares one short electric field guide rail groove. The T-shaped foot is used to enable the electric field purification area to slide into the interior of the purifier box along the guide rail groove.

4. An electric field selection method, characterized in that: Applicable to the purifier housing according to any one of claims 1 to 3; the method comprises: Determining the electric field width of the long electric field purification zone, the number of electric fields in the short electric field purification zone, and the electric field width of the short electric field purification zone according to the viscous effect of the steady-state flowing fluid; Determining the length of the adsorption area of the long electric field according to a preset electric field adsorption area calculation rule; Determining the adsorption zone length of the short electric field purification zone according to the adsorption zone length of the long electric field purification zone and a preset long electric field-short electric field correspondence relationship; Determine the electric field height of the long electric field purification zone according to a preset electric field effective cross-sectional area calculation rule; wherein the electric field height of the short electric field purification zone is the same as the electric field height of the long electric field purification zone; The specifications of the long electric field purification zone and the specifications of the short electric field purification zone are respectively determined according to the preset ionization zone length, the adsorption zone length of the long electric field purification zone, the electric field width of the long electric field purification zone, the electric field height of the long electric field purification zone, the adsorption zone length of the short electric field purification zone, the electric field width of the short electric field purification zone and the electric field height of the short electric field purification zone.

5. The electric field selection method according to claim 4, characterized in that: The method further comprises: Determine the sum of the preset ionization zone length and the adsorption zone length of the long electric field purification zone as the box length of the purifier box; The sum of the electric field widths of all the short electric field purification zones and the electric field widths of the long electric field purification zones is determined as the box width of the purifier box; The electric field height of the short electric field purification zone or the electric field height of the long electric field purification zone is determined as the box height of the purifier box.

6. The electric field selection method according to claim 4, characterized in that: The step of determining the electric field width of the long electric field purification zone, the number of electric fields in the short electric field purification zone, and the electric field width of the short electric field purification zone according to the viscous effect of the steady-state flowing fluid comprises: S1: Calculating the electric field width of the long electric field purification zone and the electric field width of the first short electric field according to a preset electric field width calculation formula; S2: Determine the sum of the electric field width of the long electric field purification zone and the two first short electric field widths as the box width of the purifier box; S3: comparing the electric field width of the first short electric field with one third of the box width of the purifier box; S4: If the first short electric field width is less than or equal to one third of the width of the purifier housing, determine that the number of electric fields in the short electric field purification zone is 2, and the first short electric field width is the electric field width of the short electric field; S5: If the first short electric field width is greater than one-third of the box width of the purifier box, subtract the first short electric field width from one-third of the box width of the purifier box to obtain a second short electric field width, and determine the number of electric fields in the short electric field purification zone to be 4, where the electric field width of the short electric field purification zone includes the first short electric field width and the second short electric field width; S6: Repeat steps S3-S5 until the electric field width of the nth short electric field is less than or equal to one third of the box width of the purifier box, and determine that the number of electric fields in the short electric field purification area is 2n, and the electric field width of the short electric field includes all electric field widths from the first short electric field width to the nth short electric field width.

7. The electric field selection method according to claim 6, characterized in that: The adsorption area of the electric field purification zone includes positive plates and negative plates arranged alternately in parallel; After the step of determining the electric field width of the long electric field purification zone, the number of electric fields in the short electric field purification zones, and the electric field width of the short electric field purification zones based on the viscous effect of the steady-state flow fluid, the method further includes: Determining the number of long electric field positive plates and the number of long electric field negative plates in the adsorption zone of the long electric field purification zone according to the preset spacing between the positive plate and the negative plate and the electric field width of the long electric field; The number of short electric field positive plates and the number of short electric field negative plates in the adsorption zone of each short electric field purification zone are determined according to the preset spacing and the electric field width of the short electric field.

8. The electric field selection method according to claim 4, characterized in that: The electric field purification zone includes an ionization zone and an adsorption zone connected to each other, and the oil smoke particles that pass through the ionization zone and enter the adsorption zone are charged particles; The step of determining the adsorption zone length of the long electric field purification zone according to a preset electric field adsorption zone calculation rule comprises: determining the acceleration of the charged particles entering the adsorption zone of the long electric field purification zone according to a preset adsorption zone voltage, a preset distance, and a mass of the charged particles in the adsorption zone of the long electric field purification zone; determining, according to the movement direction of the charged particles, the adsorption time of the charged particles to the positive electrode plate of the adsorption area; The adsorption zone length of the long electric field purification zone is determined according to the preset optimal flow rate and the adsorption time.

9. The electric field selection method according to claim 8, characterized in that: The step of determining the adsorption zone length of the short electric field purification zone according to the adsorption zone length of the long electric field purification zone and a preset long electric field-short electric field correspondence relationship includes: According to a preset long electric field-short electric field correspondence relationship, determining the flow rate of the adsorption zone of the short electric field purification zone to be half of the preset optimal flow rate; The length of the adsorption zone of the short electric field purification zone is determined according to the flow rate of the adsorption zone of the short electric field purification zone and the adsorption time.

10. An electric field selection system, characterized in that: Applicable to the purifier box according to any one of claims 1 to 3; the system comprises: An electric field width determination module, configured to determine the electric field width of the long electric field purification zone, the number of electric fields in the short electric field purification zone, and the electric field width of the short electric field purification zone according to the viscous effect of the steady-state flowing fluid; An adsorption zone length determination module, configured to determine the adsorption zone length of the long electric field purification zone according to a preset electric field adsorption zone calculation rule; The adsorption zone length determination module is further used to determine the adsorption zone length of the short electric field purification zone according to the adsorption zone length of the long electric field purification zone and a preset long electric field purification zone-short electric field purification zone correspondence relationship; an electric field height determination module, configured to determine the electric field height of the long electric field purification zone according to a preset electric field effective cross-sectional area calculation rule; wherein the electric field height of the short electric field purification zone is the same as the electric field height of the long electric field purification zone; An electric field specification determination module is used to determine the specifications of the long electric field purification zone and the short electric field purification zone according to a preset ionization zone length, the adsorption zone length of the long electric field purification zone, the electric field width of the long electric field purification zone, the electric field height of the long electric field purification zone, the adsorption zone length of the short electric field purification zone, the electric field width of the short electric field purification zone and the electric field height of the short electric field purification zone.

11. An electrostatic purifier, characterized in that: It includes a pre-filter and a purifier box according to any one of claims 1 to 3; the pre-filter is connected to the purifier box.

Images