JP5817808B2 - Air purifier, air conditioner - Google Patents

Description

The present invention, air cleaning apparatus, relates to an air conditioning apparatus.

  Patent Document 1 describes an electric dust collector. The electric dust collector includes an ionization unit and a collector unit. The ionization unit charges the particulate matter in the air. The collector unit collects charged particulate matter. The collector unit includes a plurality of discharge electrodes and a plurality of counter electrodes. The plurality of discharge electrodes and the plurality of counter electrodes are alternately arranged with a predetermined interval.

Japanese Patent Laying-Open No. 2005-074389 JP-A-6-296898

  However, in the collector part, it is difficult to hold a plurality of discharge electrodes and a plurality of counter electrodes at regular intervals. For this reason, the assemblability of the collector part is poor.

The present invention has been made to solve the above-described problems. An object of the present invention is to provide an air cleaning device and the like that can be easily assembled.

An air cleaning device according to the present invention includes a main body having an intake port formed in an upper portion and an exhaust port formed in a lower portion, and takes air into the main body from the intake port, and A blower that blows air out of the main body, an ionization unit that is provided below the interior of the main body between the air inlet and the blower, and discharges charged mist-like water; and the ionization unit And a metal fin provided on the upper side of the main body between the air inlet and the air blowing unit and collecting a charged substance by being grounded .

The air conditioner according to the present invention includes the air cleaning device, and a heat exchanger provided closer to the blowing means than the ionization unit and the metal fin .

  According to this invention, the metal fin is integrally formed separately from the ionization portion. For this reason, an electric dust collector etc. can be assembled easily.

It is a longitudinal cross-sectional view of the air conditioning apparatus in Embodiment 1 of this invention. It is a disassembled perspective view of the electric dust collector in Embodiment 1 of this invention. It is a longitudinal cross-sectional view of the electric dust collector in Embodiment 1 of this invention. It is a figure which shows the dust collection effect of the electric dust collector in Embodiment 1 of this invention. It is a longitudinal cross-sectional view of the air conditioning apparatus in Embodiment 2 of this invention. It is a longitudinal cross-sectional view of the air conditioning apparatus in Embodiment 3 of this invention. It is a longitudinal cross-sectional view of the air conditioning apparatus in Embodiment 4 of this invention. It is a block diagram of the electrostatic atomizer of the electric dust collector in Embodiment 4 of this invention.

  A mode for carrying out the invention will be described with reference to the accompanying drawings. In addition, in each figure, the same code | symbol is attached | subjected to the part which is the same or it corresponds, The duplication description is simplified or abbreviate | omitted suitably.

Embodiment 1 FIG.
1 is a longitudinal sectional view of an air-conditioning apparatus according to Embodiment 1 of the present invention.

  As shown in FIG. 1, the indoor unit of the air conditioner includes a main body 1. An intake port 2 is provided on the upper surface of the main body 1. An exhaust port 3 is provided at the lower part of the front surface of the main body 1. Inside the main body 1, an air passage 4 is provided between the air inlet 2 and the air outlet 3. A front panel 5 is provided at the top of the front surface of the main body 1 so as to be opened and closed.

  A plurality of left and right wind direction plates 6 are provided inside the exhaust port 3. The plurality of left and right wind direction plates 6 are arranged side by side in the horizontal direction. The plurality of left and right wind direction plates 6 are supported on the upper surface inside the exhaust port 3.

  A first up / down airflow direction plate 7 a is provided inside the exhaust port 3. The first up / down wind direction plate 7 a is provided on the front side of the main body 1. First support arms (not shown) are provided on both sides of the first up / down airflow direction plate 7a. A first pin (not shown) is attached to each of the first support arms. A first support (not shown) is rotatably attached to each of the first pins.

  Inside the exhaust port 3, a second up-and-down air direction plate 7 b is provided. The second up / down wind direction plate 7 b is provided on the back side of the main body 1. A second support arm (not shown) is provided on both sides of the second vertical wind direction plate 7b. A second pin (not shown) is attached to each of the second support arms. A second support (not shown) is rotatably attached to each of the second pins.

  A blower fan 8 is provided in the air passage 4. A heat exchanger 9 is provided in the air path 4. The heat exchanger 9 is provided between the air inlet 2 and the blower fan 8. The heat exchanger 9 is disposed so as to surround the blower fan 8.

  The air conditioner has a function as an air purifier. In this case, an electric dust collector 10 is provided in the air passage 4. The electric dust collector 10 includes an ionization unit 10a and metal fins 10b. The ionization unit 10 a is provided between the air inlet 2 and the heat exchanger 9. The metal fin 10b is disposed so as to be sandwiched between the ionization part 10a and the heat exchanger 9.

  In the indoor unit of the air conditioner, the blower fan 8 generates wind as a blower. Indoor air is taken in from the air inlet 2 by the wind. Thereafter, the air moves toward the heat exchanger 9. Part of the air passes through the ionization unit 10a. Particulate matter floats in a part of the air. For example, the particulate matter is composed of dust, bacteria, mold, virus, pollen, allergen substance, and the like. The particulate matter is charged by the discharge and electric field of the ionization part 10a. The charged particulate matter adheres to the metal fin 10b.

  Thereafter, the air passes through the heat exchanger 9. At this time, the heat exchanger 9 cools or warms the air. Thereafter, the air passes through the blower fan 8 and the air path 4 in this order. Thereafter, the air is blown out from the exhaust port 3 into the room. At this time, the left and right wind direction plates 6 blow the air right and left. The first up / down wind direction plate 7a and the second up / down wind direction plate 7b adjust the blowing angle of the air in the vertical direction.

Next, the ionization part 10a and the metal fin 10b will be described with reference to FIG.
FIG. 2 is an exploded perspective view of the electrostatic precipitator according to Embodiment 1 of the present invention. In FIG. 2, the Z direction is set to the windward side.

  As shown in FIG. 2, the ionization unit 10 a includes an upper frame 11, a lower frame 12, a counter electrode 13, a discharge electrode 14, electrode support units 15 a and 15 b, a power feeding unit 16, a spring 17, and a high voltage power source (not shown).

  The upper frame 11 is disposed as the first frame on the most windward side of the ionization unit 10a. For example, the entire upper frame 11 is formed of resin. The upper surface of the upper frame 11 is formed in a lattice shape. Each opening is delimited by the lattice. The width of the opening is set in advance. The depth of the opening is set in advance. The opening is formed so that outside air can be taken into the inside. The opening is formed so that a human finger does not enter the inside.

  The lower frame 12 is disposed as the second frame on the most leeward side of the ionization unit 10a. For example, the entire lower frame 12 is formed of resin. The lower surface of the lower frame 12 is formed in a lattice shape like the upper surface of the upper frame 11. Each opening is partitioned by the lattice in the same manner as the upper surface of the upper frame 11.

  The plurality of counter electrodes 13 are provided between the upper frame 11 and the lower frame 12. The plurality of counter electrodes 13 are grounded. The counter electrode 13 is formed to be long in the X direction. Adjacent counter electrodes 13 are arranged at intervals shorter than the depth dimension.

  The plurality of counter electrodes 13 are arranged so that the air taken in from the intake port 2 when passing inside the main body 1 passes without resistance. The plurality of counter electrodes 13 are arranged so as to have an angle along the flow of air taken from the air inlet 2 when arranged in the main body 1. For example, the counter electrode 13 is disposed to be inclined at a preset angle with respect to the opening surface of the upper frame 11 and the opening surface of the lower frame 12. For example, the plurality of counter electrodes 13 are arranged to have an angle of 45 to 60 degrees with respect to the opening surface of the upper frame 11 and the opening of the lower frame 12.

  The plurality of counter electrodes 13 are formed by cutting and bending a metal plate member. As a result, the plurality of counter electrodes 13 are formed more precisely than when formed by resin molding. The plurality of counter electrodes 13 are greatly suppressed in the aging of the slope as compared with the case of being formed by resin molding.

  For example, the plurality of counter electrodes 13 are formed of tungsten, copper, nickel, stainless steel, zinc, iron, molybdenum, or the like. For example, the plurality of counter electrodes 13 are formed of an alloy containing tungsten, copper, nickel, stainless steel, zinc, iron, molybdenum, or the like as a main component. For example, the plurality of counter electrodes 13 are formed by plating a noble metal such as silver, gold, or platinum on the surface of tungsten, copper, nickel, stainless steel, zinc, iron, molybdenum, or the like.

  The main part of the discharge electrode 14 is made of a plate-like member. The intermediate portion of the discharge electrode 14 is folded back about 2 to 4 times. Ring-shaped terminals are attached to both ends of the discharge electrode 14. The discharge electrode 14 has a rectangular cross section. For example, the discharge electrode 14 has a cross section in which the length of the short side is between 0.01 and 0.1 mm. For example, the discharge electrode 14 has a cross section in which the length of the long side is between 0.1 and 1.0 mm.

  The discharge electrode 14 is made of metal or the like. For example, the discharge electrode 14 is formed of tungsten, copper, nickel, stainless steel, zinc, iron, molybdenum, or the like. For example, the discharge electrode 14 is formed of an alloy whose main component is tungsten, copper, nickel, stainless steel, zinc, iron, molybdenum, or the like. For example, the discharge electrode 14 is formed by plating a noble metal such as silver, gold or platinum on the surface of tungsten, copper, nickel, stainless steel, zinc, iron, molybdenum or the like. For example, the discharge electrode 14 is formed by generating a carbon (graphite) layer or an oxide film on the surface of tungsten, copper, nickel, stainless steel, zinc, iron, molybdenum or the like.

  The entirety of the pair of electrode support portions 15a and 15b is made of resin. The electrode support 15a is attached to one end of the lower frame 12. The electrode support portion 15 b is attached to the other end portion of the lower frame 12. The pair of electrode support portions 15a and 15b includes a member for folding the discharge electrode 14 and a member for disposing the discharge electrode 14 at an appropriate position. The electrode support portion 15 a supports one side of the discharge electrode 14. The electrode support portion 15 b supports the other side of the discharge electrode 14.

  The power feeding unit 16 is made of metal. The power feeding unit 16 is provided on the electrode support unit 15a. The spring 17 is made of metal. The spring 17 is provided in the power feeding unit 16. One side of the spring 17 is connected to one of the terminals of the discharge electrode 14. The other side of the spring 17 is connected to the other terminal of the discharge electrode 14. The spring 17 applies a preset tension in the longitudinal direction of the discharge electrode 14. The high voltage power source is connected to the power supply unit 16.

  The metal fin 10b is grounded. A support portion is formed at one end of the metal fin 10b. A plurality of flat plates are stacked on the support portion. The plurality of flat plates are stacked in a direction opposite to the Y direction. The ends of the adjacent flat plates are opened. The length of the metal fin 10b in the X direction is set to the same length as the length of the opening surface of the upper frame 11 in the X direction and the length of the opening surface of the lower frame 12 in the X direction. The length of the metal fin 10b in the Y direction is set to the same length as the length of the opening surface of the upper frame 11 in the Y direction and the length of the opening surface of the lower frame 12 in the Y direction.

  For example, the metal fin 10b is integrally formed by extrusion molding in the Z direction. For example, the metal fin 10b is integrally formed of aluminum, stainless steel, zinc, iron, copper, nickel or the like. For example, the metal fin 10b is integrally formed of aluminum whose surface is anodized.

  In the electric dust collector 10, the high voltage power supply 23 supplies a high voltage of about 4 kV to 7 kV. The high voltage is supplied to the power feeding unit 16. As a result, a discharge and electric field space is generated between the counter electrode 13 and the discharge electrode 14.

Next, the arrangement of the counter electrode 13, the discharge electrode 14, and the metal fin 10b will be described with reference to FIG.
FIG. 3 is a longitudinal sectional view of the electrostatic precipitator according to Embodiment 1 of the present invention. In FIG. 3, the Z direction is set to the windward side.

  As shown in FIG. 3, the discharge electrode 14 is disposed substantially at the center of the space partitioned by the adjacent counter electrode 13.

  One end surface of the metal fin 10 b in the Z direction is in contact with the lower frame 12. As a result, the plurality of flat plates are arranged perpendicular to the opening surface of the upper frame 11, the opening surface of the lower frame 12, and the counter electrode 13. When the electrostatic precipitator 10 is disposed inside the main body 1, the direction opposite to the Y direction is the upper side. For this reason, the air which flows in from the inlet port 2 passes through a plurality of flat plates in parallel without resistance.

Next, the dust collection effect of the electric dust collector will be described with reference to FIG.
FIG. 4 is a diagram showing the dust collection effect of the electric dust collector in Embodiment 1 of the present invention. The horizontal axis in FIG. 4 is time. The vertical axis in FIG. 4 is the particle concentration in tobacco smoke.

FIG. 4 shows changes in the concentration of particles in cigarette smoke when the air conditioner is operated in a 28 m ³ chamber. “Natural damping” is a change in particle concentration when the air conditioner is not operated. “No electric dust collection” is a change in particle concentration when an air conditioner without the electric dust collection device 10 is operated. “With electric dust collection” is a change in the particle concentration when the air conditioner including the electric dust collection device 10 is operated.

  In “natural decay”, the particle concentration decays slowly. Specifically, when 40 minutes have elapsed, the particle concentration is about 90% of the initial concentration. In “without electric dust collection”, the particle concentration attenuates more rapidly than in the case of “natural attenuation”. Specifically, when 40 minutes have passed, the particle concentration is about 70% of the initial concentration. In “with electric dust collection”, the particle concentration attenuates more rapidly than in the case of “without electric dust collection”. Specifically, when 40 minutes have elapsed, the particle concentration is about 10% of the initial concentration.

  According to the embodiment described above, the metal fin 10b is integrally formed separately from the ionization portion 10a. For this reason, the electric dust collector 10 can be assembled easily.

  Moreover, the metal fin 10b is integrally formed by extrusion molding. For this reason, the electric dust collector 10 can be made inexpensive. Furthermore, it is possible to prevent the plurality of flat plates from being deteriorated with age due to deflection or the like.

  Further, the metal fin 10b is integrally formed of aluminum whose surface is anodized. In this case, the metal fin 10b is provided with corrosion resistance and wear resistance as compared with the case where it is formed of other metals. For this reason, the metal fin 10b can be used over a long period of time.

  In addition, the discharge electrode 14 is disposed substantially at the center of the space partitioned by the adjacent counter electrode 13. For this reason, the air which flows in from the inlet port 2 can be passed without resistance. As a result, the particulate matter floating in the room can be efficiently removed and inactivated without impairing the performance of the blowing means.

  Adjacent counter electrodes are arranged at intervals shorter than the depth dimension. In this case, the distance between the discharge electrode 14 and the metal fin 10 b is longer than the distance between the discharge electrode 14 and the counter electrode 13. For this reason, the discharge between the discharge electrode 14 and the metal fin 10b can be suppressed. As a result, a stable and uniform discharge and electric field space can be maintained between the discharge electrode 14 and the counter electrode 13.

  Further, the metal fin 10 b is disposed perpendicular to the opening surface of the upper frame 11, the opening surface of the lower frame 12, and the counter electrode 13. For this reason, the air which flows in from the inlet port 2 can be passed without resistance. As a result, the particulate matter floating in the room can be efficiently removed without impairing the performance of the blowing means.

  The plurality of counter electrodes 13 are arranged to be inclined with respect to the opening surface of the upper frame 11 and the opening surface of the lower frame 12. For this reason, the air which flows in from the inlet port 2 can be passed without resistance. As a result, the particulate matter floating in the room can be efficiently removed without impairing the performance of the blowing means.

  In addition, the air inlet 2 is provided in the upper part of the main body 1. The exhaust port 3 is provided in the lower part of the main body 1. For this reason, even relatively heavy particulate matter can be efficiently collected.

  Moreover, when the electric dust collector 10 is provided in an air conditioning apparatus, the performance which cools or warms indoor air is maintained. For this reason, an increase in electricity bill can be suppressed. As a result, particulate matter floating in the room can be efficiently removed.

  Further, the metal fin 10b is sandwiched between the ionization part 10a and the heat exchanger 9. For this reason, particulate matter can be efficiently collected using the whole metal fin 10b.

Embodiment 2. FIG.
FIG. 5 is a longitudinal sectional view of an air-conditioning apparatus according to Embodiment 2 of the present invention. In addition, the same code | symbol is attached | subjected to the part which is the same as that of Embodiment 1, or an equivalent, and description is abbreviate | omitted.

  The metal fin 10b according to the first embodiment is sandwiched between the ionization unit 10a and the heat exchanger 9. On the other hand, the metal fin 10b of Embodiment 2 is separated from the ionization part 10a.

  One side of the ionization unit 10 a faces the heat exchanger 9. A gap is formed between the other side of the ionization unit 10 a and the heat exchanger 9. The metal fin 10b is disposed in a gap formed between the other side of the ionization unit 10a and the heat exchanger 9.

  In the indoor unit of the air conditioner, the blower fan 8 generates wind. Indoor air is taken in from the air inlet 2 by the wind. Thereafter, the air moves toward the heat exchanger 9. Part of the air passes through the ionization unit 10a. Thereafter, particulate matter in the air is charged in the ionization unit 10a. Part of the particulate matter travels from the front portion of the ionization portion 10a toward the metal fin 10b along the wind flow. The particulate matter adheres to the metal fin 10b.

  According to Embodiment 2 demonstrated above, the metal fin 10b is arrange | positioned in the clearance gap formed between the other side of the ionization part 10a, and the heat exchanger 9. FIG. For this reason, the depth dimension of an air conditioning apparatus can be shortened.

Embodiment 3 FIG.
6 is a longitudinal sectional view of an air-conditioning apparatus according to Embodiment 3 of the present invention. In addition, the same code | symbol is attached | subjected to the part which is the same as that of Embodiment 1, or an equivalent, and description is abbreviate | omitted.

  The metal fin 10b of Embodiment 1 consists of one part. On the other hand, the metal fin 10b of Embodiment 2 consists of two parts. Specifically, the metal fin according to the second embodiment includes a first fin and a second fin. The first fin is sandwiched between one side of the ionization unit 10 a and the heat exchanger 9. The second fin is disposed in a space formed between the other side of the ionization unit 10 a and the heat exchanger 9.

  According to the third embodiment described above, the metal fin 10b consists of two parts. As a result, the surface area of the metal fin 10b increases. For this reason, the performance which removes the particulate matter which floats indoors can be improved with respect to the electrical dust collector 10. FIG.

Embodiment 4 FIG.
FIG. 7 is a longitudinal sectional view of an air-conditioning apparatus according to Embodiment 4 of the present invention. In addition, the same code | symbol is attached | subjected to the part which is the same as that of Embodiment 1, or an equivalent, and description is abbreviate | omitted.

  The ionization part 10c of Embodiment 4 consists of an electrostatic atomizer. The ionization unit 10 c is provided in the air path 4. For example, the ionization unit 10 c is provided in the lower part inside the main body 1. For example, the ionization unit 10 c is provided on the windward side of the heat exchanger 9. For example, the ionization unit 10 c is provided in the vicinity of the exhaust port 3.

  In the air conditioner, the ionization unit 10c discharges charged water droplets. The charged water droplets charge the particulate matter floating in the indoor air. The particulate matter is sucked by the blower fan 8. The particulate matter passes through the metal fin 10b. At this time, the particulate matter adheres to the metal fin 10b by Coulomb force.

Next, the ionization part 10c is demonstrated using FIG.
FIG. 8 is a configuration diagram of an ionization unit of the electrostatic precipitator according to Embodiment 4 of the present invention.

  In FIG. 8, a cooling part is formed on the lower end side of the Peltier element 18. The surface of the cooling part of the Peltier element 18 is subjected to a treatment that makes it easier for the attached water droplets to drip. A casing 19 is disposed below the Peltier element 18. A water storage tray 20 is disposed inside the casing 19. The water storage tray 20 is disposed immediately below the Peltier element 18.

  The water storage tray 20 is provided with a discharge electrode 21. The tip of the discharge electrode 21 penetrates the side wall near the bottom of the water storage tray 20. A sharp protrusion is formed at the tip of the discharge electrode 21. The discharge electrode 21 is formed of a foam metal such as titanium. A foam metal consists of a metal porous body. The pore diameter of the foam metal is 50 to 150 μm. The porosity of the foam metal is 70 to 80%.

  A counter electrode 22 is disposed at the tip of the protruding portion of the discharge electrode 21. The counter electrode 22 opposes the protrusion of the discharge electrode 21 with a preset interval. The counter electrode 22 has electrical conductivity. For example, the counter electrode 22 is formed of a metal plate. For example, the counter electrode 22 is made of stainless steel. The counter electrode 22 has a substantially circular hole. The center of the hole is disposed on the extension line of the tip of the protrusion of the discharge electrode 21.

  A high voltage power source 23 is provided in the casing 19. A high voltage power source 23 is electrically connected to the discharge electrode 21 and the counter electrode 22.

  In the ionization part 10 c, the temperature of the cooling part of the Peltier element 18 is lowered by energizing the Peltier element 18. As a result, the moisture is cooled in the air around the Peltier element 18 by the cooling part of the Peltier element 18. The moisture condenses. The moisture adheres to the surface of the cooling part of the Peltier element 18 as water droplets. The water droplet is dropped below the Peltier element 18 by its own weight.

  The water droplets are stored as water W1 in the storage tray. At this time, the water in the water storage tray 20 reaches the entire discharge electrode 21 due to the pore diameter of the foam metal and the porosity. As a result, the water W1 is impregnated up to the protruding portion of the discharge electrode 21.

  In this state, the high voltage power supply 23 applies a positive or negative DC voltage of 3 kV to 10 kV between the discharge electrode 21 and the counter electrode 22. Due to the DC voltage, a Coulomb force acts between the water held at the tip of the discharge electrode 21 and the counter electrode 22.

  The surface of water rises locally by the Coulomb force. As a result, a Taylor cone is generated. Thereafter, when the Coulomb force exceeds the surface tension of water, the Taylor cone splits. Due to the splitting, mist-like charged water droplets W2 having a diameter of several nanometers are formed. The charged water droplet W2 is released into the air.

  According to Embodiment 4 demonstrated above, the ionization part 10c discharge | releases the charged mist-like water. For this reason, the particulate matter floating in the room can be charged efficiently.

  At this time, a plurality of protrusions may be provided for the discharge electrode 21. In this case, the amount of charged water droplets W2 can be increased according to the number of protrusions.

  Note that the ionization unit 10 c may be disposed at a desired position as long as it is on the air path 4. For this reason, the freedom degree of the layout of the electric dust collector 10 can be increased.

  In addition, the air inlet 2 is provided in the upper part of the main body 1. The exhaust port 3 is provided in the lower part of the main body 1. For this reason, even relatively heavy particulate matter can be efficiently collected.

  Moreover, when the electric dust collector 10 is provided in an air conditioning apparatus, the performance which cools or warms indoor air is maintained. For this reason, an increase in electricity bill can be suppressed. As a result, particulate matter floating in the room can be efficiently removed.

  In addition, the electric dust collector 10 of Embodiment 1 to Embodiment 4 can be mounted on various air conditioners, air purifiers, and fans in home living rooms, offices, stores, and the like. Moreover, a fan may be provided in an elevator, a duct, etc., and the electric dust collector 10 of Embodiment 1 to Embodiment 4 may be applied.

  DESCRIPTION OF SYMBOLS 1 Main body, 2 Intake port, 3 Exhaust port, 4 Air path, 5 Front panel, 6 Left and right wind direction plate, 7a 1st vertical wind direction plate, 7b 2nd vertical wind direction plate, 8 Blower fan, 9 Heat exchanger, 10 Electric current collector Dust device, 10a ionization part, 10b metal fin, 10c ionization part, 11 upper frame, 12 lower frame, 13 counter electrode, 14 discharge electrode, 15a, 15b electrode support part, 16 power supply part, 17 spring, 18 Peltier element, 19 Casing, 20 water storage tray, 21 discharge electrode, 22 counter electrode, 23 high voltage power supply

Claims (4)

A main body having an intake port formed at the top and an exhaust port formed at the bottom;
Blowing means for taking air into the main body from the intake port and blowing out air from the exhaust port to the outside of the main body,
An ionization unit that is provided on the lower side of the main body between the air inlet and the air blowing unit, and discharges charged mist-like water;
Metal fins that are integrally formed separately from the ionization unit, are provided on the upper side of the main body between the air inlet and the air blowing unit, and collect a charged substance by being grounded,
Air purifier with The air cleaning apparatus according to claim 1, wherein the metal fins are integrally formed by extrusion molding. The air purifier according to claim 1 or 2, wherein the metal fin is integrally formed of aluminum whose surface is anodized. The air cleaning device according to any one of claims 1 to 3,
A heat exchanger provided closer to the blowing means than the ionization part and the metal fin;
Air conditioner with

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