JP2008008564A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To supply clean air to an air-conditioned room by preventing dust from being entangled with a discharge electrode of a charging unit composed of an electric air cleaner, and allowing a counter electrode to decompose dirt odor components. And an air conditioner capable of extending the period until maintenance is performed.
In an air conditioner in which a filter 3, a heat exchanger 4, and a blower fan 5 are provided in an air passage that connects a suction port 1 and a blower port 2, electric air is provided on the windward side of the filter 3. A charging unit comprising a cleaner 9 is provided, and a part of the blown air is circulated to the charging unit.
[Selection] Figure 1

Description

  The present invention relates to an air conditioner, and more particularly, to prevent dust from being entangled with a discharge electrode of a charging unit composed of an electric air cleaner, and to allow a counter electrode to decompose a odor component of dirt. The present invention relates to a structure capable of supplying clean air into an air-conditioned room and extending a period until maintenance is performed.

In conventional air conditioners, dust charging efficiency is maximized by optimizing the discharge electrode configuration of the negative ion generator that charges dust using a negative charging unit that discharges only air ions without corona discharge. In order to obtain an electrostatic precipitator that has stable discharge characteristics and improved ventilation characteristics,
The discharge electrode needle charged to the negative potential of the negative ion generator is arranged downstream of the counter electrode as the ground electrode, or the needle tip of the discharge electrode charged to the negative potential is directed upstream, or the ground electrode is wind By arranging the lattice spacing that is parallel to the flow of the air or that protects the electrode part to be rougher on the downstream side than on the upstream side of the wind, the dust collection ability is improved and the dust collected on the tip and counter electrode part is improved. What has been disclosed as a stable dust collector free from abnormal noise by suppressing accumulation has been disclosed (for example, see Patent Document 1).

  However, the dust collector described above is configured to be provided on the upstream side of the filter of the air passage connecting the air inlet and the air outlet, as shown in FIG. Therefore, before the dust in the air adheres to the filter, the dust adheres to the discharge electrode exposed in the air passage.

When dust adheres to the discharge electrode, abnormal discharge will occur from the discharge electrode and the dust collection function will be reduced, so there will be a need to conduct frequent maintenance to restore the function, There is a problem that the user is troublesome.
JP 2005-224759 A

  Accordingly, the present invention has been made to solve the above-described problems, and the object thereof is to make it difficult for dust to get entangled with the discharge electrode of the charging unit composed of an electric air cleaner, and for the counter electrode to become dirty. It is to provide an air conditioner that can decompose the odor components of the air and supply clean air to the air-conditioned room and can extend the period until maintenance is performed. .

  In order to achieve the above-described object, the present invention has the following features.

In an air conditioner comprising a filter, a heat exchanger, and a blower fan in an air passage connecting the suction port and the air outlet,
A charging unit for charging dirt particles contained in the air is provided on the windward side of the filter, and a part of the blown air is circulated to the charging unit.

  According to the present invention, dust is less likely to be entangled with the discharge electrode of the charging unit that charges the dust, and the counter electrode is subjected to photocatalytic treatment, so that the catalyst is discharged with a discharge voltage. It is possible to decompose the odor component of dirt by the decomposition action that can be excited and regenerate the decomposition ability, to supply clean air into the air-conditioned room, and to lengthen the period until maintenance is performed An air conditioner that can be used.

  Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

  FIG. 1 is a sectional view of an air conditioner according to the present invention, and FIG. 2 is an enlarged sectional view of a main part of the air conditioner according to the present invention.

  As shown in FIG. 1, the air conditioner according to the present invention has an air passage that connects a suction port 1 that sucks in indoor air and a blowout port 2 that blows out air that has been heat-exchanged by a heat exchanger described later to an air-conditioned room. The filter 3, the heat exchanger 4, and the blower fan 5 are provided, and the wind direction deflector plate 6 that is pivotally supported by the support shaft portion 6 a at the blowout port 2 is rotatable by the support shaft portion 7 a. And a diffuser 7 that is pivotally supported on the shaft.

  The suction air sucked from the suction port 1 is removed from the dust contained in the filter 3 by the filter 3, exchanged heat by the heat exchanger 4, and then sent to the blowout port 2 by the blower fan 5. At the same time, the wind direction deflecting plate 6 and the diffuser 7 are driven and rotated by a drive motor (not shown) so that the air outlet 2 is opened and the air direction is deflected and blown out into the air-conditioned room. It has become.

  At that time, an inlet 8 is formed on the upper wall surface of the outlet 2 for introducing part of the blown air sent to the outlet 2 by the blower fan 5 to the windward side of the filter 3. ing.

  Between the introduction port 8 and the filter 3, there is provided a charging unit composed of an electric air cleaner 9 having a circulation port 10 that faces the introduction port 8, and is included in the air. By charging the dirt particles, the charged dirt particles have a potential difference with the filter 3 and easily adhere to the surface of the filter 3.

  The electric air cleaner 9 is provided in the drain pan so as to be on the leeward side of the blower fan 5, and the air sucked from the suction port 1 circulates through the filter 3 and the heat exchanger 4. Thereafter, as shown by the arrows in FIG. 1, the circulation port 10 is provided so as to face the introduction port 8 for introducing a part of the blown air sent to the blower port 2 by the blower fan 5. Therefore, a part of the introduced blown air can be taken in smoothly.

  As shown in FIG. 1, the blown air introduced into the introduction port 8 is introduced by closing the blowout port 2 with the wind direction deflecting plate 6 and the diffuser 7, and It comes to circulate.

  Even when the air deflector 6 and the diffuser 7 are rotated to open the air outlet 2, a part of the air blown out to the air outlet 2 by the blower fan 5 is It is introduced into the introduction port 8 and distributed through the distribution port 10.

  And since the said electric type air cleaner 9 distribute | circulates a part of blowing air sent to the said blower outlet 2 by the said ventilation fan 5, by passing the said filter 3, the said electric type There is no risk that dust contained in the intake air will not flow into the air cleaner 9 and dust will be easily entangled with the discharge electrode inside the electric air cleaner 9, and the electric air There is no risk that the counter electrode inside the cleaner 9 will become dirty immediately.

  Here, the configuration of the electric air cleaner 9 will be described in detail with reference to FIG.

  The electric air cleaner 9 has, as shown by an arrow in FIG. 2, a circulation port 10 for taking in a part of the blown air sent to the blower outlet 2 by the blower fan 5 from the inlet 8. On the other hand, an outlet 11 formed larger than the circulation port 10 is provided in the upper part, and a discharge electrode 12 is provided on one side between the circulation port 10 and the outlet 11, and the same outlet is provided on the other side. A discharge portion including a counter electrode 13 facing the electrode 12 is provided.

  The discharge part of the electric air cleaner 9 is provided so that the circulation port 10 faces the introduction port 8, so that it passes through the filter 3 and the heat exchanger 4 to the outlet 2. After a part of the blown air that has been sent out is smoothly taken in from the circulation port 10, negative ions (or plus) 14 for charging are efficiently supplied from the outlet 11 toward the windward side of the filter 3. It can be done.

  After the air is sucked in from the suction port 1 as the suction air, the blown air sent to the air outlet 2 through the filter 3 and the heat exchanger 4 is in a state in which large dust is removed by the filter 3 Therefore, as described above, when a part of the air flows from the introduction port 8 through the flow port 10 through the discharge port of the electric air cleaner 9, dust is entangled with the discharge electrode 12. Can be prevented.

  Further, by supplying negative ions 14 to the windward side of the filter 3, it is possible to charge fine dust particles in the intake air sucked from the suction port 1 and to be adsorbed and removed by the filter 3. Will play.

  The counter electrode 13 of the discharge part is subjected to photocatalytic treatment by evaporating or applying, for example, titanium oxide or the like to the counter electrode 13. Since the odor component can be always automatically decomposed and removed, the period of time until the odor component of the dirt that could not be removed by the filter 3 is decomposed and the maintenance of the counter electrode 13 is greatly increased. You can do it for a long time.

  Moreover, since the negative ions 14 that were not used for charging the dust are finally collected by the heat exchanger 4 that is grounded, they do not come out of the air conditioner body. Therefore, the furniture in the air-conditioned room is not contaminated by charged dust.

  As described above, the outlet 11 is larger than the outlet 10 of the electric air cleaner 9, so that the electric air cleaner 9 is connected to the outlet 10. Since the taken-in air can be circulated toward the outlet 11 without directly hitting the discharge electrode 12, it is possible to more effectively eliminate the possibility of dust getting tangled in the discharge electrode 12. .

  At the same time, since the outlet 11 is formed larger than the circulation port 10, a part of the blown air sent to the outlet 2 is short-circuited so that the circulation port 10 of the electric air cleaner 9 is made. Thus, a large amount of negative ions 14 generated by corona discharge can be released toward the windward side of the filter 3.

  As described above, the negative ions 14 discharged to the windward side of the filter 3 adhere to the dirt particles contained in the suction air sucked from the suction port 1 and charge the particles. The charged particles have a potential difference with the filter 3 and are easily adsorbed on the surface of the filter 3 as described above.

  As explained above, the suction air sucked from the suction port 1 is effectively removed by the filter 3 and the heat exchanger 4 exchanges the dust contained in the suction air. Thereafter, the air is blown out to the outlet 2 by the blower fan 5.

  Then, a part of the blown air sent to the blower outlet 2 is taken into the electric air cleaner 9 from the circulation port 10 through the introduction port 8, and the minus generated in the electric air cleaner 9. Ions 14 are discharged from the outlet 11 to the windward side of the filter 3.

  The negative ions 14 released to the windward side of the filter 3 adhere to the dirt particles in the air sucked from the suction port 1 to charge the particles, and the charged particles adhere to the filter 3. It becomes easy.

  As a result, the air from which the dirt particles have been almost removed by the filter 3 is short-circuited, and the dirt particles removed are adhered to the counter electrode 13 facing the discharge electrode 12 and removed. Since the surface of the counter electrode 13 is photocatalyzed, the dirt particles adhering to the counter electrode 13 are decomposed and removed by the photocatalyst activated by the discharge.

  The air sent to the outlet 2 and introduced into the inlet 8 and passing through the discharge part composed of the discharge electrode 12 and the counter electrode 13 opposed to the discharge electrode 12 is removed by dirt particles by the filter 3. Therefore, the amount of dirt particles adhering to the discharge electrode 12 can be reduced as compared with the conventional technique, and the dirt particles of the counter electrode 13 can be decomposed by the photocatalyst until the maintenance is performed. Can be lengthened.

  In addition, since a part of the blown air sent to the blowout port 2 is repeatedly filtered, it is possible to produce air with a smaller amount of dirt particles than in the prior art. Since it is not released to the outside, there is an effect that the adhesion of dirt particles to the furniture in the air-conditioned room is eliminated.

It is sectional drawing of the air conditioner by this invention. It is a principal part expanded sectional view of the air conditioner by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Intake port 2 Outlet 3 Filter 4 Heat exchanger 5 Blower fan 6 Air direction deflector plate 6a Support shaft part 7 Diffuser 7a Support shaft part 8 Inlet 9 Electric air cleaner 10 Distribution port 11 Outlet 12 Discharge electrode 13 Counter electrode 14 Negative (or positive) ions

Claims (1)

In an air conditioner comprising a filter, a heat exchanger, and a blower fan in an air passage connecting the suction port and the air outlet,
An air conditioner characterized in that a charging unit for charging dirt particles contained in the air is provided on the windward side of the filter, and a part of the blown air is circulated to the charging unit.

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