JP2005103182A - Air cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a high-performance air cleaner in which a wind speed distribution in the case of being loaded on an indoor unit of an air conditioner or the like is taken into consideration. <P>SOLUTION: By changing the thickness of a gas processing function part according to the size of an air flow, making the wind speed of the air stream containing harmful substances almost constant and making the air flow pass through the gas processing function part, processing efficiency per volume of the gas processing function part is improved, and the harmful substances are highly efficiently removed. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an air purification device that removes harmful substances, odor components and dust in air, destroys microorganisms, or inactivates them by discharging.

  The conventional air purification device using discharge generates a gas ionized and ozonated by discharge in a space provided with a ground electrode facing the discharge electrode, and the microorganisms in the space by the synergistic effect of ionization and ozonization The gas that has passed through the discharge section passes through a passage formed in the device, passes through a device that removes harmful substances, and is discharged outside the device.

  FIG. 5 shows a conventional air purification device.

  The purification target gas 4 (hereinafter, the purification target gas is referred to as an air flow) passes through the discharge electrode portion 9 including the discharge electrode 1 and the counter electrode 2, and the air flow is generated by plasma, radicals, Deodorized by reacting with ozone in the air. Thereafter, the gas passes through the gas processing function unit 7 for further removing harmful substances, and further deodorized and released.

  In addition, although not described in FIG. 5, in order to form the airflow which flows as mentioned above, the ventilation fan is provided.

  However, in the above conventional configuration, for example, when the air purification device 3 is mounted on an indoor unit of an air conditioner as shown in FIG. The wind speed 10 is not constant, and the front grill 11 has a panel type specification. For example, when the air conditioner is set to a weak wind, a region where the wind speed at the gas processing function unit inlet of the air purification device becomes 0 m / s occurs, and the air flow does not pass through the gas processing function unit 7 and is a toxic substance. Overflows at the inlet of the gas processing function unit 7 and leaks harmful substances to the outside of the air purification device. Conversely, if the thickness of the gas processing function unit 7 of the air purification device 3 is reduced by a certain amount in order to avoid the partially generated wind speed of 0 m / s, the air conditioner is set to a strong wind. The gas processing function unit 7 of the purification device 3 has a problem that a region where the wind speed is too high is generated, and the harmful substances cannot be completely processed and are discharged outside the air purification device.

  Therefore, the present invention solves such a conventional problem, and an object thereof is to provide a high-performance air purification device that takes into account the wind speed distribution of the mounted equipment such as when mounted in an indoor unit of an air conditioner. And

  The air purification device of the present invention is a gas processing function unit in an air purification device that passes a gas to be purified that has passed through a discharge electrode unit comprising a discharge electrode and a plate-like counter electrode, through a gas processing function unit that removes harmful substances. The thickness of the gas processing function unit is changed in the same direction as the flow direction of the purification target gas in accordance with the wind speed in the flow direction of the purification target gas at the inlet.

In addition, in an air purification apparatus that passes a gas to be purified that has passed through a discharge electrode portion composed of a discharge electrode and a plate-shaped counter electrode, through a gas treatment function portion that removes harmful substances, the gas to be purified at the inlet portion of the gas treatment function portion The length of the plate-like counter electrode is changed in the horizontal direction and the direction in which the gas to be purified flows in accordance with the wind speed in the flow direction.

  In addition, in the air purification apparatus that passes the gas to be purified that has passed through the discharge electrode portion composed of the discharge electrode and the plate-like counter electrode, through the gas processing function unit that removes harmful substances, the inflow side of the gas to be purified of the discharge electrode portion In the air purification apparatus in which a front frame is provided so as to cover the front frame, and a crosspiece is disposed at a position corresponding to the inlet between the adjacent counter electrodes, the flow of the gas to be purified at the inlet of the gas processing function unit The width of the crosspiece of the front frame is changed according to the wind speed in the direction.

  As described above, according to the air purification device of the first aspect of the present invention, since the thickness of the gas processing function unit is changed in accordance with the size of the air flow, It is possible to pass the gas processing function unit with a constant wind speed. As a result, it is possible to increase the processing efficiency per volume of the gas processing function unit and to remove harmful substances with high efficiency. It is possible to reduce the thickness of the gas processing function part at a portion where the wind speed is low, and to save useless space. Moreover, since harmful substances can be processed with a smaller size of the gas processing function unit than in the past, costs can be reduced. In addition, when installed in an indoor unit of an air conditioner, it is possible to set a lower air volume than before by reducing the thickness of the gas processing function unit, so that the capacity variable range as an air conditioner can be increased. .

  Further, according to the air purification apparatus of the second aspect of the present invention, the height of the counter electrode is changed in accordance with the air flow, and the gas processing function unit is made by making the wind speed of the air flow containing harmful substances close to a constant level. Therefore, it is possible to increase the processing efficiency per volume of the gas processing function unit and to remove harmful substances with high efficiency. When installed in an indoor unit of an air conditioner, a part with a high wind speed was generated, and hazardous substances could not be processed in one pass and were discharged outside the air purifier. Since the air volume setting of the machine can be made higher than before, the capacity variable range as an air conditioner can be made larger.

  According to the air purification device of the third aspect of the present invention, the width of the front frame covering the air flow inflow side of the discharge electrode portion is changed. As a result, it is possible to reduce the unevenness of the wind speed at the outlet of the gas processing function unit of the air flow, so that the efficiency can be improved even when the outer dimensions of the air purification device are clearly determined.

  Embodiments of the present invention will be described below with reference to FIGS.

  In addition, the same code | symbol is attached | subjected and demonstrated to the thing similar to FIG. 5 which shows a prior art example.

(Embodiment 1)
FIG. 1 shows an air purification apparatus according to Embodiment 1 of the present invention.

  The casing 8 is provided with a discharge electrode portion 9 and a gas processing function portion 7 for removing harmful substances. In addition, although not described in FIG. 1, in order to form the airflows 4a, 4b, 4c, and 4d that flow inside the casing 8, a blower fan is provided.

  The discharge electrode portion 9 is composed of a plurality of counter electrodes 2 arranged in parallel, and a discharge electrode 1 made of tungsten or stainless steel arranged between adjacent counter electrodes 2. A pulse streamer discharge 6 is generated around.

The generation mechanism of this pulse streamer discharge 6 is that electrons are created by the ionization of neutral molecules in front of the avalanche of electrons, and this causes the next new avalanche. Most of the current is due to electrons.

  Since the electric field between the discharge electrode 1 and the counter electrode 2 has a significant electric field concentration in the vicinity of the discharge electrode 1, if the applied voltage is sufficient, a large amount of ions and photons are produced by avalanche electrons.

  By using the discharge electrode 1 as a positive electrode, a large amount of photons are emitted in all directions in the vicinity of the discharge electrode 1 and absorbed by neutral molecules in the vicinity, and many electrons traveling toward the discharge electrode 1 are ionized. An avalanche is formed and flows out into positive ions to form a plasma column.

  In this case, negative ions and positive ions toward the earth are concentrated in high density in the plasma, and in addition to the electric field concentration, a particularly strong electric field is formed between the space charge and the space charge of the new avalanche group that scatters. The light emission is further promoted.

  When the air stream 4 is brought into contact with and passed through the pulse streamer discharge 6 as described above, if the microorganisms are contained in the air stream 4, the microorganisms are caused by high-speed scattering of a large amount of electrons while passing through the region of the pulse streamer discharge 6. The outer walls and proteins are destroyed. Furthermore, the microorganisms are destroyed or inactivated during the passage due to deformation of DNA and RNA. And it becomes the air flow 5 containing harmful substances, such as ozone produced by the discharge phenomenon, passes the gas processing function part 7, and is deodorized and discharge | released.

  Here, the thicknesses d1, d2, d3, and d4 of the gas processing function unit 7 are changed corresponding to the sizes of the air flows 4a, 4b, 4c, and 4d. In FIG. 1, since the wind velocity of the air flow is 4a <4b <4c <4d, the thickness of the gas processing function unit 7 is changed to d1 <d2 <d3 <d4. As a result, the air velocity at the outlet of the gas processing function unit 7 of the air flow becomes 5a≈5b≈5c≈5d, and is discharged out of the air purification apparatus.

  As described above, since the gas processing function unit 7 can be passed through the air flow containing the toxic substance while keeping the air velocity close to a constant value, the processing efficiency per volume of the gas processing function unit 7 can be increased. Can be removed with high efficiency.

  In more detail, according to said structure, the thickness of the gas processing function part 7 of a location with a small wind speed can be reduced, and a useless space can be saved. Further, the processing efficiency per volume as the gas processing function unit 7 can be increased, that is, the hazardous substance can be processed with a smaller size of the gas processing function unit than the conventional one, so that the cost can be reduced.

  For example, when installed in an indoor unit of an air conditioner, conventionally, a part of the gas processing function unit 7 where the wind speed was partially generated and could not be set because harmful substances could not be processed and overflowed. By reducing the thickness of the gas processing function unit 7, a lower air volume can be set than before, so that the variable capacity of the air conditioner can be increased.

(Embodiment 2)
In FIG. 3 which shows the air purification apparatus of Embodiment 2, the heights L1, L2, L3, L4 and L5 of the counter electrode 2 are changed according to the air flows 4a, 4b, 4c and 4d. In FIG. 3, since the wind speed of the air flow is 4a <4b <4c <4d, the height of the counter electrode 2 is changed to L1 <L2 <L3 <L4 <L5. As a result, the wind speed at the outlet of the gas processing function unit 7 of the air flow becomes 5a≈5b≈5c≈5d due to the pressure loss effect of the counter electrode, and is discharged out of the air purifier.

As described above, since the air flow containing the harmful substance can be passed through the gas processing function unit 7 with the wind speed of the air flow almost constant, the processing efficiency per volume of the gas processing function unit 7 can be increased. Can be removed with high efficiency.

  For example, when installed in an indoor unit of an air conditioner, conventionally, a part of the gas processing function unit 7 where the wind speed is partly large is generated, and harmful substances cannot be processed in one pass and are discharged out of the air purifier. However, since the air volume setting of the indoor unit can be made higher than before by increasing the height of the counter electrode 2, the capacity variable range as an air conditioner can be further increased.

  This form can be utilized when there is a portion where the wind speed is partially high in the gas processing function unit 7. In the case where there is a portion where the wind speed is partially 0 in the gas processing function unit 7 as in the case of FIG. 1, the height of the counter electrode 2 must be lowered, which affects the streamer discharge region 6. It cannot be used because of effects. In that case, the method of FIG. 1 is optimal.

  Further, the height of the counter electrode 2 is generally increased to L1 + ΔL, L2 ++ L, L3 + ΔL, L4 + ΔL, and L5 + ΔL, thereby reducing the processing wind speed as a whole (5a−Δt ≈5b−Δt≈5c−Δt≈5d−Δt), the amount of processing per time can be reduced, and the load on the gas processing function unit 7 can be suppressed.

(Embodiment 3)
In FIG. 4 showing the air purification device, a front frame 13 is provided so as to cover the air flow inflow side of the discharge electrode section 9, and the front frame 13 is arranged at a position corresponding to the inlet between the adjacent counter electrodes 2. 14a, 14b, 14c, and 14d are arranged, and the width of the crosspiece of the front frame 13 is changed at the inlet of the gas processing function unit 7. In FIG. 4, since the wind speed of the air flow is 4a <4b <4c <4d, the width of the crosspiece of the front frame 13 is changed to W1 <W2 <W3 <W4. As a result, the air velocity at the outlet of the gas processing function unit 7 of the air flow becomes 5a≈5b≈5c≈5d due to the pressure loss effect due to the crosspieces, and is discharged out of the air purifier.

  If comprised in this way, even when the external dimension of the air purifying apparatus is decided clearly, the uniformity of the wind speed in the gas processing function part 7 can be aimed at, and the gas processing function part 7 can be made highly efficient.

The horizontal sectional view of the important section of the air purification device in Embodiment 1 of the present invention. Cross-sectional view of an indoor unit equipped with an air purification device in Embodiment 1 of the present invention The horizontal sectional view of the principal part of the air purification apparatus in Embodiment 2 of the present invention. The horizontal sectional view of the principal part of the air purification apparatus in Embodiment 3 of this invention. Horizontal sectional view of the main part of a conventional air purification device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Discharge electrode 2 Counter electrode 3 Air purification apparatus 4a, 4b, 4c, 4d Wind speed of inlet air flow (purification target gas) 5a, 5b, 5c, 5d Wind speed of outlet air flow (purification target gas) 6 Pulse streamer discharge 7 Gas Processing function unit 9 Discharge electrode unit 10 Uneven wind speed in indoor unit 13 Front frame 14a, 14b, 14c, 14d

Claims (3)

In an air purifying apparatus that passes a gas to be purified that has passed through a discharge electrode composed of a discharge electrode and a plate-like counter electrode through a gas processing function unit that removes harmful substances, the gas to be purified at the inlet of the gas processing function unit An air purification apparatus characterized in that the thickness of the gas processing function part in the direction of flowing the purification target gas and the horizontal direction are changed according to the wind speed in the flow direction. In an air purifying apparatus that passes a gas to be purified that has passed through a discharge electrode composed of a discharge electrode and a plate-like counter electrode through a gas processing function unit that removes harmful substances, the gas to be purified at the inlet of the gas processing function unit An air purification apparatus characterized in that the length of the plate-like counter electrode is changed in the horizontal direction and the direction in which the gas to be purified flows in accordance with the wind speed in the flow direction. In an air purification apparatus that passes a gas to be purified that has passed through a discharge electrode portion composed of a discharge electrode and a plate-like counter electrode through a gas processing function unit that removes harmful substances, the inflow side of the gas to be purified of the discharge electrode portion is A purification target gas at the inlet of the gas processing function unit is provided in the air purification apparatus in which a front frame is provided so as to cover and a crosspiece is disposed at a position corresponding to the inlet between the adjacent counter electrodes. An air purification device characterized in that the width of the crosspiece of the front frame is changed according to the wind speed in the flow direction.

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