JP2012002409A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner which can keep the interior of an indoor unit clean for a long period of time and achieving a comfortable indoor environment.SOLUTION: The air conditioner includes: a heat exchanger; a cross flow fan which blows air to perform heat exchange at a heat exchanger; a casing part in which a wind path for guiding an air stream from the cross flow fan is formed; a blowout port arranged continuously with the casing part; a vertical wind direction plate which controls the vertical direction of a blowout wind blown out of the blowout port; and a horizontal wind direction plate which controls the horizontal direction of the blowout wind blown out of the blowout port, wherein a minus ion-generating device is arranged on the blowout port arranged continuously with the casing part, a metal plate is arranged on the casing part and a minus potential is applied to the metal plate. According to the air conditioner, dust including mold spores electrified with minus charge repels the metal plate to which the minus potential is applied, consequently, deposition of the dusts to the casing part is suppressed and accordingly, the interior of an indoor unit is kept clean for a long period of time and a comfortable indoor environment can be achieved.

Description

  The present invention relates to an air conditioner.

  An air conditioner circulates indoor air to a heat exchanger to produce conditioned air that has been heated, cooled, or dehumidified, and blows this into the room to make the indoor environment comfortable. At this time, since a filter for removing dust in the circulating air is arranged on the suction side of the heat exchanger, most of the dust in the circulating air is collected by the filter, but a part of the dust is hidden in the filter mesh. Enter the air conditioner. This dust collides with the wall surface facing the air path in the air conditioner, bounces back, and returns to the airflow again. The dust that has returned to the airflow returns to the room from the outlet of the air conditioner.

  However, some dust adheres to the wall surface of the air conditioner indoor unit without being rebounded due to the influence of electrostatic force, the action of gravity, chemical affinity, and the like. Dust adhering to the wall peels off from the wall in a relatively short time due to airflow and other effects, and is carried out of the air conditioner along with the airflow. It may continue to adhere to the wall for a long time due to the effects of moisture from oil, oily smoke generated during cooking, smoke from smoking, etc.

  After a long time has passed, depending on the type of dust, it changes physicochemically, increasing the adhesion force, growing fungi such as mold contained in the dust, and firmly sticking to the wall with its secretions and hyphae Will become attached to. When this happens, the unevenness of the wall surface becomes larger due to the adhering dust, dust in the air is more likely to adhere to the wall due to the viscosity of the secretions, odors are generated from fungi, spores such as mold are scattered, etc. To worsen the indoor environment.

  Japanese Unexamined Patent Application Publication No. 2000-320854 (Patent Document 1) discloses a conventional air conditioner for antifouling and antibacterial purposes inside an air conditioner. In the air conditioner disclosed in Patent Document 1, an ultraviolet lamp is installed inside the indoor unit main body, and a suction grill that is a wall surface of the ventilation path, an inner wall surface of the indoor unit main body, and a guide located on the back side of the blower fan. By supporting the photocatalyst on the wind plate (casing), the photocatalyst is sufficiently irradiated with ultraviolet rays by the ultraviolet lamp, so that the functions such as effective deodorization, antifouling, and antibacterial are achieved by sufficient photocatalytic action. Is disclosed.

JP 2000-320854 A

  In Patent Document 1, an ultraviolet lamp is provided inside the indoor unit, and a photocatalyst is carried on the suction grille on the wall surface of the ventilation path or the air guide plate on the back side of the blower fan to deodorize indoor air or perform antibacterial action inside the indoor unit body. . However, if dust accumulates due to moisture inside the main unit during air conditioning or dehumidifying operation of the air conditioner, static electricity during heating in winter, oily smoke generated during cooking, etc. Antibacterial action can only be exerted on dust that reaches the ultraviolet light of the lamp, and there is a possibility that germs such as mold will propagate inside the indoor unit due to long-term use. Furthermore, since an ultraviolet lamp is mounted, it is necessary to increase costs and take measures against resin deterioration due to ultraviolet light.

  The problem to be solved by the present invention is to keep the interior of an indoor unit clean for a long time and realize a comfortable indoor environment.

  In order to achieve the above object, an air conditioner according to the present invention includes a heat exchanger, a cross-flow fan that blows air so as to exchange heat with the heat exchanger, and a casing that forms an air passage that guides the airflow from the cross-flow fan. Part, a blower outlet arranged continuously with the casing part, a vertical wind direction plate for controlling the vertical direction of the blown air blown from the blower outlet, and a left and right for controlling the left and right direction of the blown wind blown from the blower outlet A negative ion generator is disposed at an air outlet provided with a wind direction plate and arranged continuously with the casing portion, a metal plate is disposed on the casing portion, and a negative potential is applied to the metal plate.

  According to the present invention, it is difficult for dust to adhere to the interior of the indoor unit, the interior of the indoor unit can be kept clean for a long time, and a comfortable indoor environment can be realized.

The block diagram of an air conditioner. The sectional side view of an indoor unit. The perspective view of an indoor unit. The block diagram of an indoor unit. Casing part metal plate attachment figure.

  Embodiments of the present invention will be described below with reference to the drawings. First, the whole structure of the air conditioner 1 of a present Example is demonstrated using FIG.1, FIG.2, FIG.3. 1 is a configuration diagram of an air conditioner 1 according to the present embodiment, FIG. 2 is a side sectional view of the indoor unit 2 in FIG. 1, and FIG. 3 is a perspective view of the indoor unit 2.

  In FIG. 1, an air conditioner 1 is configured by connecting an indoor unit 2 and an outdoor unit 3 with a connection pipe 5, and air-conditions the room. Basic internal structures such as a cross-flow fan 14, filters 15 and 15 ′, a heat exchanger 16, a dew tray 17, a vertical wind direction plate 18, and a left and right wind direction plate 19 are attached to the housing 9 of the indoor unit 2. And basic internal structures, such as the cross-flow fan 14 attached inside the housing | casing 9, are included in the indoor unit 2 by attaching the decorative frame 8. FIG. A front panel 7 is attached to the front surface of the decorative frame 8. Below the front panel 7, a display unit 11 that displays an operation status and a light receiving unit 10 that receives an infrared operation signal from a separate remote controller 12 are arranged.

  In FIG. 2, by operating the cross-flow fan 14, air flows as indicated by white arrows, and dust in the passing air is collected by the filters 15 and 15 ′. The filters 15 and 15 ′ are for removing dust contained in the sucked indoor air, and are arranged so as to cover the suction side of the heat exchanger 16. The cross-flow fan 14 is arranged in the center of the indoor unit 2 so as to suck indoor air from the air inlet 6, pass through the blowout air passage 20, and blow out from the air outlet 13. The heat exchanger 16 is disposed on the suction side of the cross-flow fan 14 and is formed in a substantially inverted V shape.

  Influenza virus that spreads in winter in addition to relatively large dust such as string dust generated from carpets, curtains, clothing, etc. in the indoor space, invading sand and dirt from outside, hair loss generated from pets, etc. It also contains spore spores and fungi that are scattered from the cocoons that have been generated with the recent development of highly airtight houses. Most of these dusts are captured by the filters 15 and 15 ′, and the dust captured by the filters 15 and 15 ′ is removed by the cleaning brush 25. Specifically, the cleaning brush 25 positioned at the right end of the front of the indoor unit moves to the dust storage box 24 side so as to scrape dust on the filters 15 and 15 ′, and moves to the dust storage box 24 positioned at the left end of the indoor unit. Dust scraped off by the cleaning brush 25 is stored. Every time the indoor unit 2 operates for a certain period of time, the dust on the filters 15 and 15 'is removed by the cleaning brush 25 and is always kept clean. However, the above-mentioned dust such as viruses and spores are very fine with a size of about 2 to 15 μm and pass through about 60 μm, which is the mesh of the filters 15 and 15 ′.

  In the conventional air conditioner, the spores that have passed through the filters 15 and 15 ′ pass through the heat exchanger inside the indoor unit 2 that has become a high-humidity environment due to cooling or dehumidifying operation in summer. It adheres to the casing part 22 which is located in the most downstream in the indoor unit 2 inside which air contacts, and forms a blowing wind. Further, in winter, the resin wall surface is charged by heating operation under dry conditions, and dust adheres to the casing portion 22 due to electrostatic force.

  As described above, the dust gradually accumulates by repeating the operation in summer and winter, and the spores contained in the dust germinate in the high-temperature and high-humidity environment in summer to generate wrinkles. When soot is generated, problems such as making it feel odor when operating the air conditioner are caused. Therefore, prevention of wrinkles generated in the indoor unit 2 is very important in order to keep the interior of the indoor unit 2 clean for a long time and to realize a comfortable indoor environment with a clean blowing air. In particular, it is an important issue to prevent dust from adhering and accumulating on the casing portion 22 at the most downstream portion of the passing air that becomes a hotbed for generating soot.

  The air conditioner of the present embodiment for solving this problem is shown in FIGS. FIG. 4 is a configuration diagram of the indoor unit, and FIG. 5 is a casing part metal plate attachment diagram. A metal plate 26 along the curved shape of the casing part 22 is attached to the casing part 22 which is a problem in the adhesion and accumulation of dust, and the electrostatic atomizer is connected to the air outlet 13 arranged continuously with the casing part 22. 50. The electrostatic atomizer 50 includes a high voltage generator 29, a conductor 32 extending from the high voltage terminal 31 of the high voltage generator 29, a water absorbent 33 that is in electrical contact with the conductor 32 during water absorption, and an atomization. The electrode 34 and the ion electrode 35, and a Peltier element that condenses moisture in the air are formed. Moisture in the air condensed by the Peltier element 40 is supplied to the atomizing electrode 34 through the water absorbing material 33. Specifically, moisture in the air condensed by the Peltier element 40 is permeated into the water absorbing material 33, and a high voltage of −6 kV is applied by the high voltage generator 29, so that the tip of the atomizing electrode 34 in contact with the water absorbing material 33 is applied. The charged fine water droplets are discharged and negative ions are generated from the ion electrode 35 by applying a high voltage of −6 kV by the high voltage generator 29. In this embodiment, the electrostatic atomizer is provided with a negative ion generator having an ion electrode 35 for generating negative ions. However, the electrostatic atomizer such as the atomizing electrode 34 is not provided, and a negative ion generator is provided. You may make it provide the negative ion generator provided only with the ion electrode 35, the high voltage generator 29, etc. which generate | occur | produce ion.

  Here, in the present embodiment, a negative potential is applied to the metal plate 26 by branching the conductor 32 halfway and connecting it to the metal plate 26. By applying a negative potential to the metal plate 26, a large amount of negative ions released from the air outlet 13 are coupled to dust such as yarn dust that floats in the air and tends to be positively charged, and this dust has a negative charge. Returning to the air inlet 6 of the indoor unit 2 as it is. Here, most of the dust is captured by the filters 15 and 15 ′, but fine spores and the like flow further downstream. At this time, the fine resin spores and dust adhere to the conventional resin casing 22. However, since the metal plate disposed in the casing portion 22 of the present embodiment has a negative potential, fine spores and dust having a negative charge are less likely to repel and adhere, and dust accumulates on the casing portion 22. Can be suppressed. For this reason, generation | occurrence | production of the soot in the casing part 22 can be suppressed, and the inside of the indoor unit 2 can be kept clean.

  On the other hand, the metal plate 26 is connected to the conductor 32 extending from the high voltage terminal 31 and is subjected to a high voltage. However, the metal plate 26 is disposed at the rear portion of the cross-flow fan 14 and is disposed inside the air conditioner (wind path). By arranging the left and right wind direction plates 19 and the up and down wind direction plates 18 on the downstream side of the metal plate 26, safety can be ensured.

  The metal plate 26 to be attached to the casing portion 22 is preferably austenitic stainless steel SUS301, SUS305, SUS310S, SUS316, SUS321, and more preferably SUS304, which is used in a large amount and widely distributed in home appliances. . By using such a stainless steel for the metal plate 26, even if dust adheres, the nickel component eluted from the stainless steel material acts to exhibit antibacterial and antifungal properties and suppress the generation of soot. Can be kept clean.

  As described above, the air conditioner according to the present invention includes a heat exchanger, a cross-flow fan that blows air so as to exchange heat with the heat exchanger, and a casing portion that forms an air passage that guides the airflow from the cross-flow fan; A blower outlet arranged continuously with the casing part, a vertical wind direction plate for controlling the vertical direction of the blown air blown from the blower outlet, and a left and right wind direction plate for controlling the horizontal direction of the blown wind blown from the blower outlet The negative ion generator is disposed at a blower outlet disposed continuously with the casing portion, a metal plate is disposed on the casing portion, and a negative potential is applied to the metal plate. According to the present invention as described above, dust containing negatively charged spores and the like repels a metal plate to which a negative potential is applied, so that accumulation of the dust on the casing portion can be suppressed. The interior can be kept clean for a long time and a comfortable indoor environment can be realized.

DESCRIPTION OF SYMBOLS 1 Air conditioner 2 Indoor unit 3 Outdoor unit 5 Connection pipe 6 Air inlet 7 Front panel 8 Cosmetic frame 9 Case 10 Light-receiving part 11 Display part 12 Remote control 13 Air outlet 14 Cross-flow fan 15, 15 'Filter 16 Heat exchanger 17 Dew tray 18 Vertical wind direction plate 19 Left and right wind direction plate 20 Blowing air path 22 Casing part 24 Dust storage box 25 Cleaning brush 26 Metal plate 29 High voltage generator 31 High voltage terminal 32 Conductor 33 Water absorbing material 34 Atomizing electrode 35 Ion electrode 40 Peltier element 50 Electrostatic atomizer

Claims (2)

  A heat exchanger, a cross-flow fan that blows air so as to exchange heat with the heat exchanger, a casing portion that forms an air passage that guides an airflow from the cross-flow fan, and a blower that is arranged continuously with the casing portion. An outlet, a vertical wind direction plate for controlling the vertical direction of the blown air blown from the blower outlet, and a left and right wind direction plate for controlling the left and right direction of the blown wind blown from the blower outlet, and the casing portion, An air conditioner in which a negative ion generator is arranged at the outlets arranged continuously, a metal plate is arranged in the casing, and a negative potential is applied to the metal plate.   2. The air conditioner according to claim 1, wherein a metal plate of the casing portion is at least one of SUS301, SUS304, SUS305, SUS310S, SUS316, and SUS321.

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