CN117663272A - Air conditioner - Google Patents

Abstract

The invention provides an air conditioner with an electrode part facing a suction inlet. An air conditioner is provided with an indoor unit (100) provided with: a suction port (11) formed in the housing (10) for sucking in indoor air; an outlet (14) formed in the housing (10) for blowing air into the room; a heat exchanger (12) provided between the suction port (11) and the blowout port (14); and a generator (20) that is provided with an electrode unit (21) that is disposed inside the case (10), generates negative ions by means of discharge at the electrode unit (21), and the electrode unit (21) faces the direction of the suction port (11).

Description

Air conditioner

Technical Field

The present disclosure relates to an air conditioner.

Background

In the abstract of the specification of patent document 1, "an air conditioner is described, which has: a main body having an air inlet and an air outlet; and a blower fan disposed on a leeward side of the air intake port in the main body, for forming an air flow that sucks air from the air intake port into the main body and discharges air from the air discharge port, wherein the air conditioner includes: a heat exchanger arranged on the leeward side of the air inlet in the main body; and a discharge electric field generating device provided on an upstream side of the heat exchanger on a wind path of the air flow in the main body, wherein the discharge electrode and the counter electrode are housed in a box-shaped frame having opening surfaces on the upstream side and the downstream side, the heat exchanger is arranged such that a cross section of a vertex portion facing the air blowing fan side is substantially inverted V-shaped or substantially inverted W-shaped, and the opening surface on the downstream side of the frame is opposed to an end surface on the upstream side of the heat exchanger, and is arranged so that a distance between the opening surface and the end surface gradually becomes wider from a side near the air inlet toward a side far from the air inlet.

Prior art literature

Patent literature

Patent document 1: japanese patent laid-open No. 2014-231985

Disclosure of Invention

Problems to be solved by the invention

In the air conditioner described in patent document 1, the discharge electrode 7 and the counter electrode 8 constituting the discharge electric field generating device 6 have a plate shape and are disposed along the heat exchanger 5 (fig. 1 of patent document 1). Thus, the discharge/electric field generating means 6 is not oriented in the direction of the air inlet 2.

The present disclosure provides an air conditioner having an electrode part facing a suction inlet.

Means for solving the problems

An air conditioner of the present disclosure includes an indoor unit including: a suction port formed in the housing for sucking air in the room; a blowing port formed in the housing and configured to blow air into the room; a heat exchanger provided between the suction port and the blowout port; and a generator including an electrode portion disposed in the housing, wherein negative ions are generated by discharge from the electrode portion, and the electrode portion faces the direction of the suction port.

The effects of the invention are as follows.

According to the present disclosure, an air conditioner including an electrode portion facing a direction of a suction port can be provided.

Drawings

Fig. 1 is a schematic view of an air conditioner of the present disclosure.

Fig. 2 is a sectional view showing an internal configuration of the indoor unit.

Fig. 3 is an external perspective view of the indoor unit.

Fig. 4 is an enlarged view showing the vicinity of the electrode portion.

Fig. 5 is a cross-sectional view showing an internal structure of the indoor unit, and is a diagram showing a state in which the indoor unit is in operation.

Fig. 6 is an external perspective view of the indoor unit, and is a view through a part of the front panel.

Fig. 7 is a front view showing the inside of the generator.

Fig. 8 is a front view of the indoor unit, and is a view showing a state in which the front panel is removed.

Fig. 9 is a diagram illustrating a direction of releasing negative ions generated in the electrode portion.

Fig. 10 is a schematic view of a shielding portion of another embodiment.

Fig. 11 is a diagram illustrating a direction of releasing negative ions generated in the other electrode portion.

Fig. 12 is a perspective view of the indoor unit as seen from above.

Fig. 13 is an enlarged view of a portion a of fig. 12.

Fig. 14 is a view showing an interior of the indoor unit as seen from the side in a mode of disposing the electrode portions in other embodiments.

Fig. 15 is a view showing an interior of the indoor unit as viewed from the front, in which the electrode portions are provided in other embodiments.

Fig. 16 is a view of an indoor unit seen from the side, showing the internal structure of the indoor unit in other embodiments.

Symbol description

10-case, 100-indoor unit, 11-suction inlet, 12-heat exchanger, 13-cross flow fan, 14-blow outlet, 15-front panel, 16-filter, 20-generator, 200-outdoor unit, 201-container, 202-slit, 203-upper wall, 21-electrode part, 211-front end, 212-column, 216-electrode part, 217-electrode part, 218-electrode part, 219-electrode part, 22-resin part, 23-power supply substrate, 24-power supply cable, 25-shielding part, 251-cylinder part, 252-opening, 253-end part, 26-shielding part, 261-opening, 262-dividing part, 27-rotating mechanism, 30-releaser, 300-remote controller, 400-air conditioner.

Detailed Description

Hereinafter, modes (referred to as embodiments) for carrying out the present disclosure will be described with reference to the drawings. In the following description of one embodiment, description of other embodiments applicable to one embodiment is also made as appropriate. The present disclosure is not limited to the following embodiments, and various embodiments can be combined with each other or arbitrarily modified within a range that does not significantly impair the effects of the present disclosure. The same reference numerals are given to the same components, and duplicate descriptions are omitted. The parts having the same functions are given the same names. The illustrated content is merely illustrative, and for convenience of illustration, the actual configuration may be changed or some of the components may be omitted or modified between the drawings without significantly impairing the effects of the present disclosure.

Fig. 1 is a schematic diagram of an air conditioner 400 of the present disclosure. In the air conditioner 400, negative ions are released from the inside of the indoor unit 100 toward the suction port 11 (fig. 2). Thereby, dust and the like in the indoor air existing in the vicinity of and above the suction port 11 are charged. The charged dust and the like are rapidly sucked from the suction port 11 while maintaining the charged amount. As a result, dust adheres more firmly to the heat exchanger 12 (fig. 2) disposed inside the indoor unit 100 than in the case of no electrification, and dust collection capability can be improved. Such adhesion is caused by, for example, a coulomb force acting due to an electric potential generated by electrostatic induction and static electricity such as dust. The attached dust and the like can be removed by, for example, freeze cleaning (registered trademark) of the heat exchanger 12, cleaning using dew condensation water for the heat exchanger 12, cleaning by a human hand, or the like. Further, since water is used for the freeze cleaning and the cleaning with dew, static electricity can be removed with water, and dust can be easily cleaned.

The air conditioner 400 includes an indoor unit 100 installed indoors, an outdoor unit 200 installed outdoors, and a remote control 300. The remote controller 300 instructs the indoor unit 100 about the operation contents of the air conditioner 400 such as cooling operation, heating operation, and dehumidifying operation. The instruction is given by the receiving unit 18 (for example, an infrared communication unit, a WiFi or other wireless communication unit, etc.) of the indoor unit 100. The indoor unit 100 and the outdoor unit 200 are connected via a refrigerant pipe (not shown), and the refrigerant circulates between the indoor unit 100 and the outdoor unit 200. Thus, a refrigeration cycle (not shown) is formed.

Fig. 2 is a cross-sectional view showing an internal configuration of the indoor unit 100. Fig. 3 is an external perspective view of the indoor unit 100. The indoor unit 100 includes a casing 10 including a front panel 15, a suction port 11, a heat exchanger 12, a cross-flow fan 13, a discharge port 14 (fig. 5), a filter 16, and a generator 20. In fig. 2, the air outlet 14 is closed by an up-down wind deflector 17. By the rotational driving of the cross flow fan 13, an air flow is generated which passes through the filter 16, the heat exchanger 12, and the cross flow fan 13 in this order from the suction port 11 toward the discharge port 14.

The suction port 11 is formed in the casing 10 and sucks in indoor air. The suction port 11 is formed, for example, above the casing 10. The heat exchanger 12 forms a part of the refrigeration cycle, and conditions the sucked air. The heat exchanger 12 is provided between the suction port 11 and the blowout port 14 (fig. 5). The term "between" as used herein means between the air flows from the suction port 11 to the blowout port 14. The heat exchanger 12 is made of a metal such as aluminum, copper, stainless steel, or the like.

A filter 16 that captures (traps) dust and the like in the sucked air is provided between the suction port 11 and the heat exchanger 12. The air flow from the suction port 11 to the blowout port 14 is referred to herein as the space therebetween. The filter 16 is disposed horizontally on the upper side of the heat exchanger 12, and is disposed vertically on the front side of the heat exchanger 12. The filter 16 is made of a non-metallic material such as resin or fiber. By being made of a nonmetallic material, it is possible to prevent the influence of charged dust and the like. The cross flow fan 13 sucks air through the suction port 11 by rotation, and blows out the air through the blow-out port 14. The air outlet 14 is formed in the casing 10, and blows air into the room. The blow-out port 14 is formed, for example, below the housing 10.

The generator 20 generates negative ions in the indoor unit 100, for example. The generator 20 is disposed on the upstream side of the heat exchanger 12. In this way, negative ions can be easily flown into the suction port 11 in a state where the negative ions are hardly affected by the heat exchanger 12. The upstream is referred to herein as upstream with respect to the air flow from the suction port 11 toward the discharge port 14 (fig. 5).

The generator 20 includes an electrode portion 21 disposed inside the housing 10. Negative ions are generated by the discharge at the electrode portion 21. The generator 20 is disposed on the front side of the heat exchanger 12 in the illustrated example, but may be disposed on the back side or the upper side of the heat exchanger 12.

Fig. 4 is an enlarged view showing the vicinity of the electrode portion 21. The electrode portion 21 includes a columnar body 212 that releases negative ions from the distal end 211. The columnar body 212 is fixed to the resin portion 22. The columnar body 212 is connected to a power cable 24 embedded in the resin portion 22, and a dc voltage is applied to the columnar body 212 via the power cable 24, whereby, for example, corona discharge is performed at the front end 211 of the electrode portion 21. The negative electrode during discharge is a columnar body 212, and a positive electrode (not shown) provided in the indoor unit 100 discharges to the air. The positive electrode is preferably disposed at a position where negative ions generated at the front end 211 are likely to fly toward the suction port 11. In this way, electrons are released into the air at the front end 211, and negative ions (plasma ions such as oxygen ions and hydroxyl ions) due to, for example, oxygen molecules in the air are generated at the front end 211. The generated negative ions fly from the front end 211 toward the suction port 11, which is the direction in which the electrons fly.

When negative ions are released, an air flow called ion wind is generated. The ion wind is generated from the tip 211 in the same direction as the axial direction (extending direction) of the columnar body 212, that is, in the same direction as the direction from the root (resin portion 22) of the columnar body 212 toward the tip 211. Therefore, the negative ions generated at the front end 211 fly from the front end 211 of the columnar body 212 toward the suction port 11.

The columnar bodies 212 are, for example, a collection of structures made of fibers, threads, needles, rods, or the like. The columnar body 212 has, for example, a brush shape. The columnar body 212 is made of carbon, for example.

In the indoor unit 100, the electrode portion 21 faces the direction of the suction port 11. As a result, negative ions generated in the electrode portion 21 can be scattered in the direction of the suction port 11 in opposition to the airflow, as indicated by the outline arrows. As a result, negative ions can be released into the indoor space above the suction port 11.

In the example of the present disclosure, the columnar body 212 faces the direction of the suction port 11. Thereby, the negative ions can be easily directed toward the suction port 11.

The distance between the suction port 11 and the electrode portion 21 (for example, the tip 211) is not particularly limited as long as the distance is a distance that allows negative ions generated at the tip 211 to move in opposition to the airflow from the suction port 11 toward the heat exchanger 12 by the ion wind. Such a distance can be determined by, for example, flight simulation of negative ions when the indoor unit 100 is operated at the maximum air volume.

Fig. 5 is a cross-sectional view showing the internal structure of the indoor unit 100, and is a diagram showing a state in which the indoor unit 100 is in operation. During operation of the indoor unit 100, the up-down louver 17 is opened downward. As indicated by the thick solid arrows, indoor air containing dust and the like is sucked from the suction port 11 by the rotation of the cross flow fan 13. At this time, negative ions are released from the generator 20 as indicated by the outline arrows in the indoor space above the suction port 11. Therefore, dust and the like in the air are charged at least around the outside of the indoor unit 100. As a result, dust and the like whose time has not elapsed since the electrification are sucked through the suction port 11 formed above in the illustrated example. Therefore, the electrification of dust is maintained, and the adsorption effect to the metal heat exchanger 12 is improved.

Thus, the electrode portion 21 is configured to release negative ions into the indoor space above the suction port 11. This makes it possible to quickly suck in charged dust and the like from the suction port 11, and to enhance the adsorption effect to the heat exchanger 12.

Returning to fig. 2 and 3, the electrode portion 21 is disposed between the suction port 11 and the filter 16. This makes it possible to release electrons generated in the electrode portion 21 toward the suction port 11 without being affected by the filter 16. The air flow from the suction port 11 to the blowout port 14 is referred to herein as the space therebetween.

In the illustrated example, the electrode portion 21 is provided on the back surface side of the front panel 15. The indoor unit 100 is fixed to a wall or the like on the back side, and the indoor unit faces the front side. Accordingly, an airflow is formed from the front side toward the rear side with respect to the indoor unit 100. Therefore, by providing the electrode portion 21 on the back surface side of the front panel 15, negative ions can be released to a position near the most front surface side in the airflow reaching the indoor unit 100. This makes it possible to uniformly charge dust in the air reaching the suction port 11 located on the rear surface side of the electrode portion 21.

Fig. 6 is an external perspective view of the indoor unit 100, and is a view through a part of the front panel 15. When the indoor unit 100 is viewed from the front, the generator 20 is disposed in the center in the left-right direction inside the indoor unit 100. The generator 20 is disposed between the front panel 15 and the filter 16 extending in the vertical direction (up-down direction). The generator 20 includes a container 201 accommodating an electrode portion 21 (fig. 4). The container 201 is a substantially rectangular parallelepiped box having a wide width in the lateral direction, and includes a slit 202 for discharging negative ions generated in the electrode portion 21 to the outside of the container 201. Slits 202 are provided at the left and right end portions of the container 201.

Fig. 7 is a front view showing the inside of the generator 20. The container 201 houses a power supply substrate 23 for applying a high voltage to the electrode portion 21 in addition to the electrode portion 21. The power supply board 23 and the electrode portion 21 are connected by a power supply cable 24. The container 201 is made of, for example, a flame-retardant resin (e.g., polypropylene). The container 201 is an integrally molded product that can be manufactured by injection molding or the like, for example. This can reduce the number of components. The generator 20 in which the electrode portion 21, the power supply substrate 23, and the power supply cable 24 are housed in the container 201 can be manufactured by bending a portion corresponding to a corner of the container 201 with respect to a resin member manufactured by injection molding or the like, for example.

Fig. 8 is a front view of the indoor unit 100, and is a diagram showing a state in which the front panel 15 (fig. 6) is removed. However, in fig. 8, a part of the front wall of the container 201 is not shown, and a part of the inside of the container 201 is visualized.

The electrode portion 21 is provided in plural in the horizontal direction when the indoor unit 100 is viewed from the front. The plurality of indoor units 100 are provided in the horizontal direction, that is, the plurality of indoor units may be provided in the horizontal direction, and the plurality of indoor units may be provided in the vertical direction. This makes it possible to easily release negative ions to the entire horizontal direction of the indoor unit 100, i.e., the lateral direction. In the illustrated example, the electrode portion 21 includes four electrode portions (electrode portions 216, 217, 218, 219 from left to right) facing the horizontal direction.

At least one electrode portion 21 is disposed on each of the left and right sides of the center point P1 of the suction port 11 when the indoor unit 100 is viewed from the front. Thereby, negative ions can be easily released to the entire suction port 11. In the illustrated example, the electrode portion 21 is provided in a plurality (specifically, two electrode portions 216 and 217, for example) on the left side and in a plurality (specifically, two electrode portions 218 and 219, for example) on the right side with the center point P1 as a boundary. By providing a plurality of electrode portions 21, a user can feel a strong impression when looking at the electrode portions from above.

The electrode portions 216 and 217 are spaced apart from each other at the same distance as the electrode portions 218 and 219. However, these intervals may also be different. The distance between the electrode portion 217 and the center point P1 is equal to the distance between the electrode portion 218 and the center point P1. However, these distances may also be different.

The electrode portion 21 is disposed at an angle θ1 with respect to the horizontal direction when the indoor unit 100 is viewed from the front. The angle θ1 is an angle between a straight line L1 extending from the front end 211 of the electrode portion 21 along the extending direction (the perpendicular direction to the surface forming the front end 211 (fig. 4)) of the columnar body 212 (fig. 4) and a straight line L2 showing the horizontal direction (the left-right direction of the indoor unit 100). The angle θ1 is formed above the straight line L2. The indoor unit 100 generally has a shape having a wide width in the left-right direction. Therefore, by having the angle θ1 with respect to the horizontal direction, negative ions can be easily released over the entire indoor unit 100 having a wide width.

The angle θ1 is not particularly limited as long as it is possible to allow negative ions to reach the vicinity of and above the suction port 11 disposed above the indoor unit 100, and is usually greater than 0 ° and not more than 90 °, for example, 30 ° or more and not more than 90 °, preferably 30 ° or more and less than 90 °, and more preferably 30 ° or more and not more than 60 °. When the angle θ1 is 90 °, negative ions are mainly released directly above. The angle θ1 may be the same or different for each electrode portion 21.

Fig. 9 is a diagram illustrating the direction of release of negative ions generated in the electrode portion 218. Fig. 9 illustrates, as an example, two electrode portions 218 and 219 disposed on the right side of the center point P1 (fig. 8) of the suction port 11 among the four electrode portions 21 shown in fig. 8. In fig. 9, the release ranges of the negative ions released from the electrode portion 218 are shown in the electrode portions 218 and 219. The same applies to the other electrode portions 21 as shown in fig. 9 and fig. 11 described below.

The negative ions released from the electrode portion 218 are released so as to gradually widen toward the extending direction of the electrode portion 218. As described above, the negative ions released from the electrode portion 218 are directed toward the suction port 11 (fig. 2) which is the outside of the container 201 through the slit 202 formed in the container 201. At this time, the density of negative ions is highest in a straight line L1 extending from the tip 211 (fig. 4) of the electrode portion 218 in the extending direction of the electrode portion 218 and in the vicinity of the straight line L1.

The indoor unit 100 (fig. 2) includes a shielding portion 25 that covers the upper side of the electrode portion 218. The upper side here need not be entirely right above the electrode portion 218, but may have a width in the left-right direction to some extent. In the illustrated example, the shielding portion 25 is an upper wall 203 of the container 201. The straight line L1 passes outside the shielding portion 25 of the end 253 of the shielding portion 25. This can suppress dust and the like from accumulating in the electrode portion 218. Further, the line L1 having the highest negative ion density and the vicinity of the line L1 can be suppressed from being blocked by the blocking portion 25, and negative ions can easily reach the suction port 11. Further, the slit 202 is formed outside the end 253 as described above. Therefore, the straight line L1 passes through the opening 261 without intersecting the dividing portion 262 that divides the opening 261 formed in the slit 202, and the details thereof will be described below with reference to fig. 13.

Fig. 10 is a schematic view of a shielding portion 25 according to another embodiment. The shielding portion 25 includes a cylindrical portion 251 surrounding the electrode portion 21 and an opening 252 facing the electrode portion 21 in the bottom of the cylindrical portion 251. The shielding portion 25 has a cap shape that is open at least on the electrode portion 21 side. In the illustrated example, the opening 252 extends in the vertical direction. In this way, dust and the like can be suppressed from accumulating in the columnar body 212. Further, if the opening 252 is disposed at the same front-rear surface and the left-right direction position as the upper end or at the side of the electrode portion 21 with respect to the upper end, dust can be suppressed from accumulating in the electrode portion 21.

Fig. 11 is a diagram illustrating the direction of negative ion release generated in the other electrode 219. Fig. 11 illustrates the release range of negative ions released from the electrode portion 219 on the right side of the two electrode portions 218 and 219 shown in fig. 9. A shielding portion 25 is also provided above the electrode portion 219. In the illustrated example, the shielding portion 25 is an upper wall 203 of the container 201. In the electrode portion 219, similarly to the electrode portion 218, the density of negative ions is highest in the vicinity of the straight line L1 and the straight line L1 extending from the tip 211 of the electrode portion 219 in the extending direction of the electrode portion 219. On the other hand, in the left portion away from the straight line L1, negative ions are emitted in a superimposed manner by negative ions from the electrode portion 218 adjacent to the left. This can suppress a decrease in the release density of negative ions.

Fig. 12 is a perspective view of the indoor unit 100 from above. The slit 202 through which the negative ions pass along the straight line L1 (fig. 9 and 11) has a smaller dimension in the front-rear direction than the suction port 11. Therefore, the negative ions can be prevented from being prevented from advancing by the casing 10 that partitions the suction port 11. In a side view of the indoor unit 100, an angle θ2 (fig. 14) of the electrode portion 21 (fig. 11) with respect to a straight line L3 (fig. 14) showing the vertical direction is 0 °. Therefore, the negative ions mainly reach directly above the indoor unit 100.

Fig. 13 is an enlarged view of a portion a of fig. 12. The electrode portion 21 is arranged so that the suction port 11 (fig. 12) can be visually checked when the direction of the suction port 11 is viewed from the electrode portion 21. Thus, the straight line L1 reaches the suction port 11 without being blocked, and thus negative ions can easily reach the suction port 11 without being blocked by a structure such as the case 10.

The indoor unit 100 includes a shielding portion 26. The shielding portion 26 includes an opening 261 and covers the upper side of the electrode portion 21. The upper side here need not be entirely directly above the electrode portion 21, but may have a certain width in the left-right direction. The shielding portion 26 further includes a dividing portion 262 that divides the opening 261. Thus, the opening 261 is partitioned by the partition portion 262. In the example of the present disclosure, the shielding portion 26 is a slit 202 having an opening 261 small enough for the finger of the user to be unable to be inserted. The slit 202 is formed adjacent to an end 253 of the upper wall 203 (shielding portion 25) constituting the container 201.

The straight line L1 (fig. 9 and 11) passes through the opening 261. In this way, the negative ions are less likely to be blocked by the blocking portion 26 before reaching the suction port 11 along the straight line L1, and the negative ions can be easily made to reach the suction port 11.

Fig. 14 is a view of the indoor unit 100 as seen from the side, showing an arrangement of the electrode portions 21 in other embodiments. The electrode portion 21 is disposed at an angle θ2 with respect to the vertical direction (upward direction) of the indoor unit 100 so as to be away from the heat exchanger 12. In the illustrated example, the angle θ2 is an angle between the straight line L1 and a straight line L3 showing the vertical direction of the indoor unit 100 when the indoor unit 100 is viewed from the side. The straight line L1 extends so as to be farther from the heat exchanger 12 as it is farther from the electrode portion 21. In a side view of the indoor unit 100, the electrode portion 21 is disposed obliquely to the vertical direction so as to be oriented more toward the front side than the resin portion 22.

By disposing the electrode portion 21 in this manner, the negative ion discharge direction can be separated from the heat exchanger 12. As described above, dust and the like charged with negative ions are adsorbed to the heat exchanger 12. Therefore, the negative ions are released so as to be away from the heat exchanger 12, and the negative ions can be suppressed from reaching the heat exchanger 12 before the dust and the like are sufficiently charged, so that the dust and the like can be effectively charged.

The angle θ2 is not particularly limited as long as it is a value that allows negative ions to reach the vicinity of and above the suction port 11 disposed above the indoor unit 100, and is, for example, 0 ° or more and 20 ° or less, preferably more than 0 ° and 20 ° or less, and more preferably 10 ° or more and 20 ° or less. The angle θ2 may be the same or different for each electrode portion 21.

Fig. 15 is a diagram showing an indoor unit 100 as viewed from the front, in which the electrode portions are provided in other embodiments. The generator 20 includes a rotation mechanism 27 that rotates the electrode portion 21 so as to be able to change an angle θ1 with respect to the horizontal direction when the indoor unit 100 is viewed from the front. By providing the rotation mechanism 27, the range that can be released by one electrode portion 21 can be widened, and negative ions can be released over a wide range. The rotation mechanism 27 is not shown, and is configured to include a support member for supporting the electrode portion 21, an actuator for rotating the support member, and the like, for example.

Fig. 16 is a diagram of the indoor unit 100 seen from the side, showing the internal structure of the indoor unit 100 according to another embodiment. The indoor unit 100 includes a releaser 30 disposed downstream of the heat exchanger 12 and configured to release negative ions. The downstream here refers to downstream based on the air flow from the suction port 11 toward the discharge port 14 (fig. 5). In this way, negative ions can be easily released to the downstream side (for example, the outlet 14) of the heat exchanger 12 in a state that is hardly affected by the heat exchanger 12.

The releaser 30 mainly releases negative ions to the air blown out from the air outlet 14, for example. The term "mainly" as used herein means that negative ions are released at least to the air blown out from the air outlet 14, and means that the releaser 30 is disposed so that negative ions can be released as much as possible from the air outlet 14.

When negative ions are released from the releaser 30 as indicated by the outline arrow, the negative ions are blown out into the room together with the air conditioned by the heat exchanger 12. The air blown into the room and containing negative ions charges dust and the like under the indoor unit 100, on the front side, and the like. Then, the dust and the like thus charged are further charged again above the indoor unit 100. This can increase the charge amount of dust and the like, and promote adsorption to the heat exchanger 12.

In the illustrated example, the releaser 30 is disposed in the vicinity of the blowout port 14. The releaser 30 can have the same structure as the generator 20.

Claims (15)

1. An air conditioner is characterized in that,

the indoor unit is provided with:

a suction port formed in the housing for sucking air in the room;

a blowing port formed in the housing and configured to blow air into the room;

a heat exchanger provided between the suction port and the blowout port; and

a generator including an electrode portion disposed in the housing, for generating negative ions by discharging at the electrode portion,

the electrode part faces the direction of the suction inlet.

2. The air conditioner according to claim 1, wherein,

the electrode part is configured to release the negative ions to the indoor space above the suction port.

3. The air conditioner according to claim 1, wherein,

the electrode part is provided with a columnar body which releases the negative ions from the front end,

the columnar body faces the direction of the suction inlet.

4. An air conditioner according to any one of claims 1 to 3, wherein,

the electrode portion is disposed so as to be angled with respect to a horizontal direction when the indoor unit is viewed from the front.

5. The air conditioner according to claim 4, wherein,

the indoor unit is provided with a plurality of electrode parts in the horizontal direction when viewed from the front.

6. The air conditioner according to claim 4, wherein,

the electrode portion is disposed at an angle to the vertical direction of the indoor unit so as to be away from the heat exchanger.

7. An air conditioner according to any one of claims 1 to 3, wherein,

the indoor unit is provided with a filter between the suction inlet and the heat exchanger,

the electrode part is arranged between the suction inlet and the filter.

8. The air conditioner according to claim 4, wherein,

when the indoor unit is viewed from the front, at least one electrode portion is disposed on each of the left and right sides of the center point of the suction port.

9. The air conditioner according to claim 4, wherein,

the electrode portion is arranged so that the suction port can be visually checked when the direction of the suction port is viewed from the electrode portion.

10. The air conditioner according to claim 9, wherein,

the indoor unit is provided with a shielding part covering the upper part of the electrode part,

a straight line extending from the tip of the electrode portion in the extending direction of the electrode portion passes outside the shielding portion than an end portion of the shielding portion.

11. The air conditioner according to claim 9, wherein,

the indoor unit is provided with a shielding part which is provided with an opening and covers the upper part of the electrode part,

a straight line extending from the tip of the electrode portion in the extending direction of the electrode portion passes through the opening.

12. An air conditioner according to any one of claims 1 to 3, wherein,

the generator is disposed upstream of the heat exchanger.

13. The air conditioner according to claim 12, wherein,

the indoor unit includes a releaser disposed downstream of the heat exchanger and configured to release negative ions.

14. The air conditioner according to claim 13, wherein,

the releaser mainly releases negative ions to air blown out from the air outlet.

15. An air conditioner according to any one of claims 1 to 3, wherein,

the generator includes a rotation mechanism that rotates the electrode portion so that an angle with respect to a horizontal direction can be changed when the indoor unit is viewed from the front.