US20180195790A1 - Indoor unit for air conditioner - Google Patents
Indoor unit for air conditioner Download PDFInfo
- Publication number
- US20180195790A1 US20180195790A1 US15/740,157 US201515740157A US2018195790A1 US 20180195790 A1 US20180195790 A1 US 20180195790A1 US 201515740157 A US201515740157 A US 201515740157A US 2018195790 A1 US2018195790 A1 US 2018195790A1
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- United States
- Prior art keywords
- antimicrobial
- unit
- heat exchanger
- drain pan
- drain
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/14—Collecting or removing condensed and defrost water; Drip trays
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/40—Details of walls
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
- F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F2013/221—Means for preventing condensation or evacuating condensate to avoid the formation of condensate, e.g. dew
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F2013/228—Treatment of condensate, e.g. sterilising
Definitions
- the present invention relates to an indoor unit for an air conditioner, and more particularly, to a ceiling-mounted indoor unit for an air conditioner.
- Indoor units for an air conditioner include one to be mounted in a ceiling (ceiling-mounted type).
- the ceiling-mounted indoor unit for an air conditioner sucks indoor air by rotating a centrifugal fan, cools the sucked air with a heat exchanger, and blows out the cooled air through air outlets for cooling a room.
- drain water is generated in the heat exchanger.
- the drain water is accumulated in a drain pan so as to be drained out of the indoor unit with a drain pump.
- the drain pump does not drain the drain water below a suction limit level, so that a certain amount of the drain water remains in the drain pan after the operation is stopped. This leads to bacteria growing in the remaining drain water to generate muddy slime, causing a problem such as clogging in the drain pump.
- an antimicrobial agent is generally arranged inside the drain pan.
- an antimicrobial agent in liquid form is coated on an inner face of the drain pan, or an antimicrobial agent is kneaded in a resin drain pan sheet on a face of the drain pan, so that the antimicrobial agent is gradually dissolved in the drain water.
- an antimicrobial agent in liquid form is coated on an inner face of the drain pan, or an antimicrobial agent is kneaded in a resin drain pan sheet on a face of the drain pan, so that the antimicrobial agent is gradually dissolved in the drain water.
- the drain pan itself needs to be replaced to keep the antimicrobial effect.
- Patent Document 1 Japanese Patent No. 4821342
- Patent Document 2 Japanese Patent No. 4252530
- the antimicrobial agent is often arranged near the drain pump where the drain water is accumulated on the drain pan, to efficiently sterilize the drain water. Further, a float switch is arranged near the drain pump, to prevent overflow of the drain water from the drain pan. Therefore, a space for arranging the antimicrobial agent is further needed at the space on the drain pan where such various components are arranged.
- a cross-sectional area of the outlet passage for cooling air formed between the drain pan and a body case is made smaller. This incurs an increase in noise and an increase in driving power of a fan.
- a ratio of the space occupied by these components increases with respect to an entire space of the drain pan. Therefore, the cross-sectional area of the outlet passage is further decreased.
- the present invention has been made in view of the above circumstances and intends to provide an indoor unit for an air conditioner in which an antimicrobial agent is arranged on a drain pan while a cross-sectional area of an outlet passage is prevented from being reduced.
- the present invention provides an indoor unit for an air conditioner having: a blower fan that is arranged in a casing; a heat exchanger that encompasses all air flow directions from the blower fan; a drain pan that is arranged below the heat exchanger; and an antimicrobial unit that is installed on the drain pan and has an antimicrobial agent to sterilize drain water, wherein at least a part of the antimicrobial unit is arranged directly below the heat exchanger.
- an indoor unit for an air conditioner in which an antimicrobial agent is arranged on a drain pan while a cross-sectional area of an outlet passage is prevented from being reduced.
- FIG. 1 is a half cross-sectional view of an indoor unit for an air conditioner according to an embodiment of the present invention
- FIG. 2 is a cross-sectional perspective view of the indoor unit shown in FIG. 1 for describing an air flow therein;
- FIG. 3 is a cross-sectional perspective view of a vicinity of a drain pump in the indoor unit shown in FIG. 1 ;
- FIG. 4 is a perspective view of an antimicrobial unit on a drain pan for describing an installation state thereof;
- FIG. 5 is a plan view of the antimicrobial unit on the drain pan for describing the installation state thereof;
- FIG. 6 is a plan view of the antimicrobial unit as a comparative example to show an installation position thereof;
- FIG. 7 is a plan view of the antimicrobial unit in the present embodiment to show an installation position thereof;
- FIG. 8 is a cross-sectional view taken along a line A-A in FIG. 7 ;
- FIG. 9 is a cross-sectional view taken along a line B-B in FIG. 7 ;
- FIG. 10 is a diagram illustrating a modification of the present embodiment.
- FIG. 1 is a half cross-sectional view of an indoor unit 100 for an air conditioner (hereinafter, simply referred to as an “indoor unit”) according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional perspective view of the indoor unit 100 shown in FIG. 1 for describing an air flow therein. In FIG. 2 , a decorative panel 42 (see FIG. 1 ) is removed.
- the indoor unit 100 is a ceiling-mounted indoor unit that is mounted in a ceiling 41 .
- the air conditioner according to the present embodiment includes the indoor unit 100 and an outdoor unit (not shown) connected to the indoor unit with a refrigerant pipe (not shown) to constitute a refrigeration cycle for air conditioning.
- the indoor unit 100 has a body case 1 and a decorative panel 42 .
- the lower face of the decorative panel 42 faces inside a room, and the body case 1 is mounted in the ceiling 41 .
- the decorative panel 42 is attached to the lower part of the body case 1 so as to be substantially flush with the face of the ceiling 41 .
- the body case 1 is mounted in a ceiling space (above the face of the ceiling 41 ) with hanging hooks and hanging bolts (not shown).
- the decorative panel 42 is fixed to the body case 1 with screws or the like (not shown).
- the body case 1 includes a casing 1 a and a heat insulating member 1 b .
- the casing 1 a is in a rectangular shape in a planar view and is formed of a metal plate in a bottomed box shape having an opening on the lower side.
- the “rectangular shape” here includes a “substantially rectangular shape” which has, for example, chamfered or rounded corners, in addition to a “literally rectangular shape.”
- the casing 1 a is formed of two or more sheet metals being pressed into a predetermined shape and joined together with screws, rivets, or the like.
- the heat insulating member 1 b for heat insulation, dew prevention, sound insulation and the like is arranged inside the casing 1 a with the opening side down.
- the indoor unit 100 is provided with a blower fan 2 arranged in the casing 1 a , a heat exchanger 4 that encompasses all air flow directions from the blower fan 2 , and a drain pan 5 arranged below the heat exchanger 4 .
- the blower fan 2 is, for example, a centrifugal fan, and turns the orientation of an air flow by approximately 90 degrees to send the air to the heat exchanger 4 .
- the blower fan 2 is rotationally driven by a fan motor 3 arranged in the casing 1 a .
- the fan motor 3 is fixed to a top plate of the casing 1 a .
- the blower fan 2 and the fan motor 3 constitute a blower.
- the drain pan 5 serves to accumulate drain water that is condensed on the face of the heat exchanger 4 to be dropped.
- the drain pan 5 is, for example, a styrene foam product, and is formed with a resin layer such as an ABS resin on the inner face thereof to be in contact with the drain water.
- An air inlet 6 is arranged at the center of the lower face of the indoor unit 100 . Further, air outlets 7 (at four positions in this case) are arranged on the peripheral edge in the lower face of the indoor unit 100 .
- the blower fan 2 is arranged in an air passage in the casing 1 a that connects the air inlet 6 to the air outlet 7 .
- the heat exchanger 4 is arranged between the blower fan 2 and the air outlet 7 . Further, a bell mouth 8 is arranged between the blower fan 2 and the air inlet 6 .
- air 21 in a room is sucked from the air inlet 6 (see FIG. 1 ) by the rotation action of the blower fan 2 and is blown out toward the heat exchanger 4 through the blower fan 2 .
- the air 21 is cooled down through the heat exchanger 4 .
- the air 21 cooled down through the heat exchanger 4 passes through an outlet passage 9 formed between the drain pan 5 and the heat insulating member 1 b of the body case 1 , and is blown out from the indoor unit 100 through the air outlet 7 (see FIG. 1 ) into the room.
- FIG. 3 is a cross-sectional perspective view of a vicinity of the drain pump 14 in the indoor unit 100 shown in FIG. 1 .
- FIG. 4 is a perspective view of an antimicrobial unit 15 on the drain pan 5 for describing an installation state thereof.
- FIG. 5 is a plan view of the antimicrobial unit 15 on the drain pan 5 for describing the installation state thereof.
- the heat exchanger 4 is omitted for the purpose of illustration.
- the drain pan 5 includes a partition wall 12 that partitions a primary space on the upstream side (primary side) from a secondary space on the downstream side (secondary side) of the air 21 (see FIG. 2 , the same applies hereinafter) blown through the heat exchanger 4 above the drain pan 5 . Further, an opening groove 13 is formed in the partition wall 12 by cutting out a part thereof, allowing the primary space to communicate with the secondary space.
- the drain water When the air 21 in the room is dehumidified by the heat exchanger 4 , the drain water is generated. The drain water drops into the primary space (drain water 10 ) and into the secondary space (drain water 11 ) above the drain pan 5 .
- the indoor unit 100 (see FIG. 1 , the same applies hereinafter) is provided with a drain pump 14 that drains the drain water accumulated in the drain pan 5 .
- the drain water 10 that drops into the primary space above the drain pan 5 is directed toward the drain pump 14 through the opening groove 13 formed in the partition wall 12 .
- the drain water 10 is joined with the drain water 11 around the opening groove 13 formed in the partition wall 12 , and is sucked by the drain pump 14 to be drained outside.
- the drain pump 14 is unable to drain the drain water below the suction limit level, to always cause a certain amount of drain water to remain in the drain pan 5 after the air conditioner is stopped. This leads to bacteria growing in the remaining drain water to generate muddy slime, causing a problem such as clogging in the drain pump 14 .
- the antimicrobial unit 15 with an antimicrobial agent to sterilize the drain water is installed on the drain pan 5 .
- the antimicrobial unit 15 includes a resin case in which a solid antimicrobial agent is accommodated. A plurality of through holes is formed in a wall of the resin case to allow the drain water to pass through.
- the antimicrobial unit 15 is fixed to the drain pan 5 , for example, with a screw 16 .
- the antimicrobial unit 15 is preferably installed on the drain pan 5 near the drain pump 14 .
- the bottom face of the drain pan 5 to face a suction port 14 a of the drain pump 14 is formed lower than the peripheral portion thereof, so that the drain water is easily accumulated toward the drain pump 14 .
- the drain pan 5 is in a rectangular frame shape in a planar view.
- the “rectangular frame shape” here includes a “substantially rectangular frame shape” which has, for example, chamfered or rounded corners, in addition to a “literally rectangular frame shape.”
- the drain pump 14 is usually installed in a corner of the drain pan 5 , together with a float switch 17 .
- the outlet passage 9 defined between the drain pan 5 and the heat insulating member 1 b (see FIG. 2 ) of the body case 1 in the radial direction about the rotation axis of the blower fan 2 is circumferentially defined between the adjacent corners of the drain pan 5 in a rectangular frame shape.
- Four outlet passages 9 are defined in this case.
- Reference numerals L 1 to L 4 in FIG. 5 each indicate a circumferential length (hereinafter, referred to as a “circumferential dimension in a cross section of a passage) of a cross section that is orthogonal to the air flow direction in each outlet passage 9 .
- the float switch 17 detects that the drain water accumulated in the drain pan 5 is equal to or more than a predetermined amount. When the float switch 17 detects that the drain water accumulated in the drain pan 5 is equal to or more than the predetermined amount, the air conditioner is stopped. Accordingly, the overflow of the drain water from the drain pan 5 is prevented.
- an installation space for components is small in the corner of the drain pan 5 , which makes it difficult to install the drain pump 14 , the float switch 17 and the antimicrobial unit 15 in the same corner of the drain pan 5 .
- FIG. 6 is a plan view of the antimicrobial unit 15 as a comparative example to show an installation position thereof.
- the comparative example in FIG. 6 shows an expanded (enlarged) installation space in the corner of the drain pan 5 .
- the circumferential dimension L 0 in the cross-section of the passage is shortened by the amount of the expanded installation space in the corner of the drain pan 5 . Therefore, the cross-sectional area of the outlet passage 9 is reduced, to potentially cause an increase in noise and an increase in driving power of a fan.
- the drain water 10 (see FIG. 3 ) is generated more than the drain water 11 (see FIG. 3 ). This is because, in the heat exchanger 4 , refrigerant pipes in the first column with respect to the primary side (upstream side of the air flow) and its vicinity have the most heat exchange amount.
- the drain water 10 , 11 (see FIG. 3 ) accumulated toward the drain pump 14 flows as drain water 10 a , 10 b , 11 a , 11 b along the four passages, respectively.
- the drain water 10 a , 10 b , llb flow away from the antimicrobial unit 15 , and thus are hardly sterilized with the antimicrobial unit 15 . Therefore, the antimicrobial effect may not be sufficiently exhibited.
- FIG. 7 is a plan view of the antimicrobial unit 15 in the present embodiment to show an installation position thereof.
- the antimicrobial unit 15 is installed directly below the heat exchanger 4 (also see FIG. 3 ). Although almost entire antimicrobial unit 15 is installed directly below the heat exchanger 4 in this case, a part of the antimicrobial unit 15 may be installed directly below the heat exchanger 4 .
- the antimicrobial unit 15 is installed in the opening groove 13 formed in the partition wall 12 of the drain pan 5 .
- the opening groove 13 is formed in a size to accommodate the antimicrobial unit 15 , so that the antimicrobial unit 15 is fitted into the opening groove 13 .
- the circumferential dimension L 1 in the cross section of the passage in the present embodiment only needs the same dimension as in the case where the antimicrobial unit 15 is not installed. That is, according to the present embodiment, the circumferential direction L 1 does not need to be shortened by the dimension ⁇ L to the circumferential dimension L 0 in the cross section of the passage in the comparative example where the antimicrobial unit 15 is installed on the expanded space.
- the drain pump 14 , the antimicrobial unit 15 and the float switch 17 are installed in the same corner of the drain pan 5 having a rectangular frame shape in a planar view, that is, in the same corner among the four corners in the casing 1 a having a rectangular shape in a planar view.
- the heat exchanger 4 has two bent portions 4 a , in one corner of the casing 1 a , specifically, in the corner where the drain pump 14 is installed.
- the antimicrobial unit 15 is installed between the bent portions 4 a in a planar view. Further, the antimicrobial unit 15 is installed so that the longitudinal direction of the antimicrobial unit 15 in a planar view is along the extending direction of the heat exchanger 4 in a planar view.
- FIG. 8 is a cross-sectional view taken along the line A-A in FIG. 7
- FIG. 9 is a cross-sectional view taken along the line B-B in FIG. 7 .
- the bottom face of the opening groove 13 is set to have the same height as the bottom face in the primary space (space on the upstream side of the heat exchanger 4 ) and the bottom face in the secondary space (space on the downstream side of the heat exchanger 4 ) of the drain pan 5 .
- the partition wall 12 serves to prevent the air 21 (see FIG. 2 , the same applies hereinafter) from passing through the secondary side (downstream side) of the heat exchanger 4 , without passing through the heat exchanger 4 .
- a resistive element 30 against the air is installed on the partition wall 12 to fill in a gap between the partition wall 12 and the heat exchanger 4 .
- the opening groove 13 formed in the partition wall 12 preferably passes the drain water but blocks the air 21 . Therefore, as shown in FIG. 9 , a resistive element 31 against the air is installed on the antimicrobial unit 15 to fill in a gap between the antimicrobial unit 15 and the heat exchanger 4 (and the resistive element 30 ).
- a material of the resistive elements 30 and 31 a material such as foam rubber may be used. Note that, for the purpose of illustration, the resistive elements 30 and 31 are not shown in other figures such as FIG. 1 .
- the indoor unit 100 for an air conditioner is provided with the heat exchanger 4 that encompasses all air flow directions from the blower fan 2 , the drain pan 5 that is arranged below the heat exchanger 4 , and the antimicrobial unit 15 that is installed on the drain pan 5 and has the antimicrobial agent to sterilize drain water, wherein at least a part of the antimicrobial unit 15 is arranged directly below the heat exchanger 4 .
- the indoor unit 100 for an air conditioner is provided in which the antimicrobial agent is arranged on the drain pan 5 while the cross-sectional area of the outlet passage 9 is prevented from being reduced. Therefore, the increase in noise and the increase in fan power caused by the decrease in the cross-sectional area of the outlet passage are prevented.
- the antimicrobial unit 15 is installed in the opening groove 13 formed in the partition wall 12 of the drain pan 5 .
- the opening groove 13 that corresponds to the antimicrobial unit 15 is formed in the partition wall 12 of the drain pan 5 to allow the antimicrobial unit 15 to be installed on the drain pan 5 efficiently. Further, since the antimicrobial unit 15 is installed in the opening groove 13 where the drain water flowing on the drain pan 5 passes or joins, the antimicrobial effects of the antimicrobial unit 15 is sufficiently exerted.
- the drain pump 14 , the antimicrobial unit 15 and the float switch 17 are installed in the same corner of the casing 1 a . Therefore, the antimicrobial unit 15 is installed in the small space close to the drain pump 14 and the float switch 17 on the drain pan 5 . Further, since the drain water is accumulated toward the drain pump 14 , the drain water around the drain pump 14 is sterilized efficiently so as to more effectively prevent slime from being generated.
- the bottom face of the opening groove 13 has the same height as the the bottom faces in the primary space and the secondary space of the drain pan 5 , to avoid the flow of the drain water from being inhibited. This prevents the drain water from remaining and bacteria from growing.
- the antimicrobial unit 15 is installed between the two bent portions 4 a of the heat exchanger 4 in one corner of the casing 1 a . Accordingly, a space for installing the drain pump 14 is secured in a corner of the casing 1 a , and the antimicrobial unit 15 is efficiently installed near the drain pump 14 .
- the longitudinal direction of the antimicrobial unit 15 in a planar view approximately runs along the extending direction of the heat exchanger 4 in a planar view. Therefore, a large part of the antimicrobial unit 15 is positioned directly below the heat exchanger 4 , to prevent the cross-sectional area of the outlet passage 9 from being reduced.
- the resistive element 31 against the air is installed on the antimicrobial unit 15 .
- the gap between the antimicrobial unit 15 and the heat exchanger 4 in the opening groove 13 of the partition wall 12 is filled by the resistive element 3 to allow only the drain water to pass through but disallow the air 21 to pass through.
- the air 21 is prevented from flowing into the secondary side of the heat exchanger 4 .
- FIG. 10 is a diagram illustrating a modification of the present embodiment.
- a drain pan 5 a may have a step formed with a first bottom face 12 a and a second bottom face 12 b that is lower than the first bottom face 12 a .
- a recess 13 a is preferably formed in a portion below the heat exchanger 4 in the first bottom surface 12 a to allow the antimicrobial unit 15 to be installed therein.
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- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Ceramic Engineering (AREA)
- Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
Abstract
An indoor unit for an air conditioner includes: a blower fan that is arranged in a casing; a heat exchanger that encompasses all air flow directions from the blower fan; a drain pan that is arranged below the heat exchanger; and an antimicrobial unit that is installed on the drain pan and has an antimicrobial agent to sterilize drain water. At least a part of the antimicrobial unit is arranged directly below the heat exchanger. The indoor unit has the antimicrobial agent arranged on the drain pan while a cross-sectional area of an outlet passage is prevented from being reduced.
Description
- The present invention relates to an indoor unit for an air conditioner, and more particularly, to a ceiling-mounted indoor unit for an air conditioner.
- Indoor units for an air conditioner include one to be mounted in a ceiling (ceiling-mounted type). The ceiling-mounted indoor unit for an air conditioner sucks indoor air by rotating a centrifugal fan, cools the sucked air with a heat exchanger, and blows out the cooled air through air outlets for cooling a room.
- In such an indoor unit for an air conditioner, during the cooling operation, drain water is generated in the heat exchanger. The drain water is accumulated in a drain pan so as to be drained out of the indoor unit with a drain pump. However, the drain pump does not drain the drain water below a suction limit level, so that a certain amount of the drain water remains in the drain pan after the operation is stopped. This leads to bacteria growing in the remaining drain water to generate muddy slime, causing a problem such as clogging in the drain pump.
- To prevent such a problem, an antimicrobial agent is generally arranged inside the drain pan.
- Conventionally, for example, an antimicrobial agent in liquid form is coated on an inner face of the drain pan, or an antimicrobial agent is kneaded in a resin drain pan sheet on a face of the drain pan, so that the antimicrobial agent is gradually dissolved in the drain water. However, in this approach, since the antimicrobial effect is reduced relatively quickly, the drain pan itself needs to be replaced to keep the antimicrobial effect.
- Then, a solid antimicrobial agent is accommodated in a case to be set on a bottom face of the drain pan (see
Patent Documents 1 and 2). - Patent Document 1: Japanese Patent No. 4821342
- Patent Document 2: Japanese Patent No. 4252530
- The antimicrobial agent is often arranged near the drain pump where the drain water is accumulated on the drain pan, to efficiently sterilize the drain water. Further, a float switch is arranged near the drain pump, to prevent overflow of the drain water from the drain pan. Therefore, a space for arranging the antimicrobial agent is further needed at the space on the drain pan where such various components are arranged.
- However, if the drain pan is expanded (enlarged) to provide a space for arranging the antimicrobial agent near the drain pump on the drain pan, a cross-sectional area of the outlet passage for cooling air formed between the drain pan and a body case is made smaller. This incurs an increase in noise and an increase in driving power of a fan. Especially, in a compact indoor unit, since a drain pump, a float switch and an antimicrobial agent as used in a standard indoor unit are commonly used, a ratio of the space occupied by these components increases with respect to an entire space of the drain pan. Therefore, the cross-sectional area of the outlet passage is further decreased.
- The present invention has been made in view of the above circumstances and intends to provide an indoor unit for an air conditioner in which an antimicrobial agent is arranged on a drain pan while a cross-sectional area of an outlet passage is prevented from being reduced.
- To solve the problem above, the present invention provides an indoor unit for an air conditioner having: a blower fan that is arranged in a casing; a heat exchanger that encompasses all air flow directions from the blower fan; a drain pan that is arranged below the heat exchanger; and an antimicrobial unit that is installed on the drain pan and has an antimicrobial agent to sterilize drain water, wherein at least a part of the antimicrobial unit is arranged directly below the heat exchanger.
- According to the present invention, an indoor unit for an air conditioner is provided in which an antimicrobial agent is arranged on a drain pan while a cross-sectional area of an outlet passage is prevented from being reduced.
-
FIG. 1 is a half cross-sectional view of an indoor unit for an air conditioner according to an embodiment of the present invention; -
FIG. 2 is a cross-sectional perspective view of the indoor unit shown inFIG. 1 for describing an air flow therein; -
FIG. 3 is a cross-sectional perspective view of a vicinity of a drain pump in the indoor unit shown inFIG. 1 ; -
FIG. 4 is a perspective view of an antimicrobial unit on a drain pan for describing an installation state thereof; -
FIG. 5 is a plan view of the antimicrobial unit on the drain pan for describing the installation state thereof; -
FIG. 6 is a plan view of the antimicrobial unit as a comparative example to show an installation position thereof; -
FIG. 7 is a plan view of the antimicrobial unit in the present embodiment to show an installation position thereof; -
FIG. 8 is a cross-sectional view taken along a line A-A inFIG. 7 ; -
FIG. 9 is a cross-sectional view taken along a line B-B inFIG. 7 ; and -
FIG. 10 is a diagram illustrating a modification of the present embodiment. - A description will be given in detail of an embodiment of the present invention with reference to the drawings as appropriate.
- In the drawings referenced below, the same members are denoted with the same reference numerals.
-
FIG. 1 is a half cross-sectional view of anindoor unit 100 for an air conditioner (hereinafter, simply referred to as an “indoor unit”) according to an embodiment of the present invention.FIG. 2 is a cross-sectional perspective view of theindoor unit 100 shown inFIG. 1 for describing an air flow therein. InFIG. 2 , a decorative panel 42 (seeFIG. 1 ) is removed. - As shown in
FIG. 1 , theindoor unit 100 according to the present embodiment is a ceiling-mounted indoor unit that is mounted in aceiling 41. The air conditioner according to the present embodiment includes theindoor unit 100 and an outdoor unit (not shown) connected to the indoor unit with a refrigerant pipe (not shown) to constitute a refrigeration cycle for air conditioning. - The
indoor unit 100 has abody case 1 and adecorative panel 42. The lower face of thedecorative panel 42 faces inside a room, and thebody case 1 is mounted in theceiling 41. Thedecorative panel 42 is attached to the lower part of thebody case 1 so as to be substantially flush with the face of theceiling 41. Thebody case 1 is mounted in a ceiling space (above the face of the ceiling 41) with hanging hooks and hanging bolts (not shown). Thedecorative panel 42 is fixed to thebody case 1 with screws or the like (not shown). - The
body case 1 includes acasing 1 a and aheat insulating member 1 b. Thecasing 1 a is in a rectangular shape in a planar view and is formed of a metal plate in a bottomed box shape having an opening on the lower side. The “rectangular shape” here includes a “substantially rectangular shape” which has, for example, chamfered or rounded corners, in addition to a “literally rectangular shape.” Thecasing 1 a is formed of two or more sheet metals being pressed into a predetermined shape and joined together with screws, rivets, or the like. In thebody case 1, theheat insulating member 1 b for heat insulation, dew prevention, sound insulation and the like is arranged inside thecasing 1 a with the opening side down. - The
indoor unit 100 is provided with ablower fan 2 arranged in thecasing 1 a, aheat exchanger 4 that encompasses all air flow directions from theblower fan 2, and adrain pan 5 arranged below theheat exchanger 4. Theblower fan 2 is, for example, a centrifugal fan, and turns the orientation of an air flow by approximately 90 degrees to send the air to theheat exchanger 4. Theblower fan 2 is rotationally driven by afan motor 3 arranged in thecasing 1 a. Thefan motor 3 is fixed to a top plate of thecasing 1 a. Theblower fan 2 and thefan motor 3 constitute a blower. - The
drain pan 5 serves to accumulate drain water that is condensed on the face of theheat exchanger 4 to be dropped. Thedrain pan 5 is, for example, a styrene foam product, and is formed with a resin layer such as an ABS resin on the inner face thereof to be in contact with the drain water. - An
air inlet 6 is arranged at the center of the lower face of theindoor unit 100. Further, air outlets 7 (at four positions in this case) are arranged on the peripheral edge in the lower face of theindoor unit 100. Theblower fan 2 is arranged in an air passage in thecasing 1 a that connects theair inlet 6 to theair outlet 7. Theheat exchanger 4 is arranged between theblower fan 2 and theair outlet 7. Further, abell mouth 8 is arranged between theblower fan 2 and theair inlet 6. - As shown in
FIG. 2 ,air 21 in a room is sucked from the air inlet 6 (seeFIG. 1 ) by the rotation action of theblower fan 2 and is blown out toward theheat exchanger 4 through theblower fan 2. In cooling operation, theair 21 is cooled down through theheat exchanger 4. Theair 21 cooled down through theheat exchanger 4 passes through anoutlet passage 9 formed between thedrain pan 5 and theheat insulating member 1 b of thebody case 1, and is blown out from theindoor unit 100 through the air outlet 7 (seeFIG. 1 ) into the room. -
FIG. 3 is a cross-sectional perspective view of a vicinity of thedrain pump 14 in theindoor unit 100 shown inFIG. 1 .FIG. 4 is a perspective view of anantimicrobial unit 15 on thedrain pan 5 for describing an installation state thereof.FIG. 5 is a plan view of theantimicrobial unit 15 on thedrain pan 5 for describing the installation state thereof. InFIG. 4 , theheat exchanger 4 is omitted for the purpose of illustration. - As shown in
FIGS. 3 and 4 , thedrain pan 5 includes apartition wall 12 that partitions a primary space on the upstream side (primary side) from a secondary space on the downstream side (secondary side) of the air 21 (seeFIG. 2 , the same applies hereinafter) blown through theheat exchanger 4 above thedrain pan 5. Further, an openinggroove 13 is formed in thepartition wall 12 by cutting out a part thereof, allowing the primary space to communicate with the secondary space. - When the
air 21 in the room is dehumidified by theheat exchanger 4, the drain water is generated. The drain water drops into the primary space (drain water 10) and into the secondary space (drain water 11) above thedrain pan 5. - The indoor unit 100 (see
FIG. 1 , the same applies hereinafter) is provided with adrain pump 14 that drains the drain water accumulated in thedrain pan 5. Thedrain water 10 that drops into the primary space above thedrain pan 5 is directed toward thedrain pump 14 through the openinggroove 13 formed in thepartition wall 12. Thedrain water 10 is joined with thedrain water 11 around the openinggroove 13 formed in thepartition wall 12, and is sucked by thedrain pump 14 to be drained outside. Thedrain pump 14 is unable to drain the drain water below the suction limit level, to always cause a certain amount of drain water to remain in thedrain pan 5 after the air conditioner is stopped. This leads to bacteria growing in the remaining drain water to generate muddy slime, causing a problem such as clogging in thedrain pump 14. - To prevent the problem, the
antimicrobial unit 15 with an antimicrobial agent to sterilize the drain water is installed on thedrain pan 5. Theantimicrobial unit 15 includes a resin case in which a solid antimicrobial agent is accommodated. A plurality of through holes is formed in a wall of the resin case to allow the drain water to pass through. Theantimicrobial unit 15 is fixed to thedrain pan 5, for example, with ascrew 16. - The
antimicrobial unit 15 is preferably installed on thedrain pan 5 near thedrain pump 14. The bottom face of thedrain pan 5 to face asuction port 14 a of thedrain pump 14 is formed lower than the peripheral portion thereof, so that the drain water is easily accumulated toward thedrain pump 14. - As shown in
FIG. 5 , thedrain pan 5 is in a rectangular frame shape in a planar view. The “rectangular frame shape” here includes a “substantially rectangular frame shape” which has, for example, chamfered or rounded corners, in addition to a “literally rectangular frame shape.” Thedrain pump 14 is usually installed in a corner of thedrain pan 5, together with afloat switch 17. - The
outlet passage 9 defined between thedrain pan 5 and theheat insulating member 1 b (seeFIG. 2 ) of thebody case 1 in the radial direction about the rotation axis of theblower fan 2 is circumferentially defined between the adjacent corners of thedrain pan 5 in a rectangular frame shape. Fouroutlet passages 9 are defined in this case. Reference numerals L1 to L4 inFIG. 5 each indicate a circumferential length (hereinafter, referred to as a “circumferential dimension in a cross section of a passage) of a cross section that is orthogonal to the air flow direction in eachoutlet passage 9. - The
float switch 17 detects that the drain water accumulated in thedrain pan 5 is equal to or more than a predetermined amount. When thefloat switch 17 detects that the drain water accumulated in thedrain pan 5 is equal to or more than the predetermined amount, the air conditioner is stopped. Accordingly, the overflow of the drain water from thedrain pan 5 is prevented. - Especially, in the
indoor unit 100 for a small ceiling-mounted air conditioner, an installation space for components is small in the corner of thedrain pan 5, which makes it difficult to install thedrain pump 14, thefloat switch 17 and theantimicrobial unit 15 in the same corner of thedrain pan 5. -
FIG. 6 is a plan view of theantimicrobial unit 15 as a comparative example to show an installation position thereof. The comparative example inFIG. 6 shows an expanded (enlarged) installation space in the corner of thedrain pan 5. However, in the comparative example, the circumferential dimension L0 in the cross-section of the passage is shortened by the amount of the expanded installation space in the corner of thedrain pan 5. Therefore, the cross-sectional area of theoutlet passage 9 is reduced, to potentially cause an increase in noise and an increase in driving power of a fan. - The drain water 10 (see
FIG. 3 ) is generated more than the drain water 11 (seeFIG. 3 ). This is because, in theheat exchanger 4, refrigerant pipes in the first column with respect to the primary side (upstream side of the air flow) and its vicinity have the most heat exchange amount. As shown inFIG. 6 , thedrain water 10, 11 (seeFIG. 3 ) accumulated toward thedrain pump 14 flows asdrain water FIG. 6 , thedrain water antimicrobial unit 15, and thus are hardly sterilized with theantimicrobial unit 15. Therefore, the antimicrobial effect may not be sufficiently exhibited. -
FIG. 7 is a plan view of theantimicrobial unit 15 in the present embodiment to show an installation position thereof. - As shown in
FIG. 7 , in the present embodiment, theantimicrobial unit 15 is installed directly below the heat exchanger 4 (also seeFIG. 3 ). Although almost entireantimicrobial unit 15 is installed directly below theheat exchanger 4 in this case, a part of theantimicrobial unit 15 may be installed directly below theheat exchanger 4. - In more detail, the
antimicrobial unit 15 is installed in theopening groove 13 formed in thepartition wall 12 of thedrain pan 5. The openinggroove 13 is formed in a size to accommodate theantimicrobial unit 15, so that theantimicrobial unit 15 is fitted into the openinggroove 13. Thus, the circumferential dimension L1 in the cross section of the passage in the present embodiment only needs the same dimension as in the case where theantimicrobial unit 15 is not installed. That is, according to the present embodiment, the circumferential direction L1 does not need to be shortened by the dimension ΔL to the circumferential dimension L0 in the cross section of the passage in the comparative example where theantimicrobial unit 15 is installed on the expanded space. - As shown in
FIGS. 5 and 7 , thedrain pump 14, theantimicrobial unit 15 and thefloat switch 17 are installed in the same corner of thedrain pan 5 having a rectangular frame shape in a planar view, that is, in the same corner among the four corners in thecasing 1 a having a rectangular shape in a planar view. - The
heat exchanger 4 has twobent portions 4 a, in one corner of thecasing 1 a, specifically, in the corner where thedrain pump 14 is installed. Theantimicrobial unit 15 is installed between thebent portions 4 a in a planar view. Further, theantimicrobial unit 15 is installed so that the longitudinal direction of theantimicrobial unit 15 in a planar view is along the extending direction of theheat exchanger 4 in a planar view. -
FIG. 8 is a cross-sectional view taken along the line A-A inFIG. 7 , andFIG. 9 is a cross-sectional view taken along the line B-B inFIG. 7 . - As shown in
FIG. 8 , the bottom face of the openinggroove 13 is set to have the same height as the bottom face in the primary space (space on the upstream side of the heat exchanger 4) and the bottom face in the secondary space (space on the downstream side of the heat exchanger 4) of thedrain pan 5. - The
partition wall 12 serves to prevent the air 21 (seeFIG. 2 , the same applies hereinafter) from passing through the secondary side (downstream side) of theheat exchanger 4, without passing through theheat exchanger 4. Aresistive element 30 against the air is installed on thepartition wall 12 to fill in a gap between thepartition wall 12 and theheat exchanger 4. The openinggroove 13 formed in thepartition wall 12 preferably passes the drain water but blocks theair 21. Therefore, as shown inFIG. 9 , aresistive element 31 against the air is installed on theantimicrobial unit 15 to fill in a gap between theantimicrobial unit 15 and the heat exchanger 4 (and the resistive element 30). As a material of theresistive elements resistive elements FIG. 1 . - As described above, the
indoor unit 100 for an air conditioner according to the present embodiment is provided with theheat exchanger 4 that encompasses all air flow directions from theblower fan 2, thedrain pan 5 that is arranged below theheat exchanger 4, and theantimicrobial unit 15 that is installed on thedrain pan 5 and has the antimicrobial agent to sterilize drain water, wherein at least a part of theantimicrobial unit 15 is arranged directly below theheat exchanger 4. - According to the present embodiment, the
indoor unit 100 for an air conditioner is provided in which the antimicrobial agent is arranged on thedrain pan 5 while the cross-sectional area of theoutlet passage 9 is prevented from being reduced. Therefore, the increase in noise and the increase in fan power caused by the decrease in the cross-sectional area of the outlet passage are prevented. - Further, in the present embodiment, the
antimicrobial unit 15 is installed in theopening groove 13 formed in thepartition wall 12 of thedrain pan 5. In this configuration, the openinggroove 13 that corresponds to theantimicrobial unit 15 is formed in thepartition wall 12 of thedrain pan 5 to allow theantimicrobial unit 15 to be installed on thedrain pan 5 efficiently. Further, since theantimicrobial unit 15 is installed in theopening groove 13 where the drain water flowing on thedrain pan 5 passes or joins, the antimicrobial effects of theantimicrobial unit 15 is sufficiently exerted. - Further, in the present embodiment, the
drain pump 14, theantimicrobial unit 15 and thefloat switch 17 are installed in the same corner of thecasing 1 a. Therefore, theantimicrobial unit 15 is installed in the small space close to thedrain pump 14 and thefloat switch 17 on thedrain pan 5. Further, since the drain water is accumulated toward thedrain pump 14, the drain water around thedrain pump 14 is sterilized efficiently so as to more effectively prevent slime from being generated. - Further, in the present embodiment, the bottom face of the opening
groove 13 has the same height as the the bottom faces in the primary space and the secondary space of thedrain pan 5, to avoid the flow of the drain water from being inhibited. This prevents the drain water from remaining and bacteria from growing. - Further, in the present embodiment, the
antimicrobial unit 15 is installed between the twobent portions 4 a of theheat exchanger 4 in one corner of thecasing 1 a. Accordingly, a space for installing thedrain pump 14 is secured in a corner of thecasing 1 a, and theantimicrobial unit 15 is efficiently installed near thedrain pump 14. - Further, in the present embodiment, the longitudinal direction of the
antimicrobial unit 15 in a planar view approximately runs along the extending direction of theheat exchanger 4 in a planar view. Therefore, a large part of theantimicrobial unit 15 is positioned directly below theheat exchanger 4, to prevent the cross-sectional area of theoutlet passage 9 from being reduced. - Further, in the present embodiment, the
resistive element 31 against the air is installed on theantimicrobial unit 15. In the configuration, the gap between theantimicrobial unit 15 and theheat exchanger 4 in theopening groove 13 of thepartition wall 12 is filled by theresistive element 3 to allow only the drain water to pass through but disallow theair 21 to pass through. Still further, in a case where the drain water remains to the height of theantimicrobial unit 15 during cooling operation of theindoor unit 100, theair 21 is prevented from flowing into the secondary side of theheat exchanger 4. - The present invention has been described above based on the embodiment, but is not limited to the embodiment and includes various modifications. For example, the above-described embodiment has been described in detail in order to better illustrate the present invention and are not necessarily limited to the one having an entire configuration as described above. A part of the configuration of the embodiment may be deleted, added or replaced with another configuration.
-
FIG. 10 is a diagram illustrating a modification of the present embodiment. - In the embodiment described above, the
antimicrobial unit 15 is installed in theopening groove 13 formed in thepartition wall 12 of thedrain pan 5, but the present invention is not limited thereto. For example, as shown inFIG. 10 , adrain pan 5 a may have a step formed with a firstbottom face 12 a and a secondbottom face 12 b that is lower than the firstbottom face 12 a. In this case, arecess 13 a is preferably formed in a portion below theheat exchanger 4 in thefirst bottom surface 12 a to allow theantimicrobial unit 15 to be installed therein. -
-
- 1: body case
- 1 a: casing
- 2: blower fan
- 3: fan motor
- 4: heat exchanger
- 4 a: bent portion
- 5, 5 a: drain pan
- 6: air inlet
- 7: air outlet
- 8: bell mouth
- 9: outlet passage
- 10, 11: drain water
- 12: partition wall
- 13: opening groove
- 14: drain pump
- 15: antimicrobial unit
- 17: float switch
- 21: air
- 30, 31: resistive element
- 100: indoor unit
Claims (7)
1. An indoor unit for an air conditioner comprising:
a blower fan that is arranged in a casing;
a heat exchanger that encompasses all air flow directions from the blower fan;
a drain pan that is arranged below the heat exchanger; and
an antimicrobial unit that is installed on the drain pan and has an antimicrobial agent to sterilize drain water,
wherein at least a part of the antimicrobial unit is arranged directly below the heat exchanger,
the drain pan has a partition wall that partitions a primary space at an upstream side from a secondary space on a downstream side of an air flow through the heat exchanger above the drain pan,
an opening groove is formed in the partition wall to allow the primary space to communicate with the secondary space, and
the antimicrobial unit is installed in the opening groove formed in the partition wall.
2. (canceled)
3. The indoor unit for an air conditioner according to claim 1 further comprising:
a drain pump that drains drain water accumulated in the drain pan,
wherein the drain pump and the antimicrobial unit are installed in one corner of the casing having a rectangular shape in a planar view.
4. The indoor unit for an air conditioner according to claim 1 ,
wherein a bottom face of the opening groove is set to have the same height as that of a bottom face in the primary space and a bottom face in the secondary space of the drain pan.
5. The indoor unit for an air conditioner according to claim 1 ,
wherein the heat exchanger has two bent portions in one corner of the casing having a rectangular shape in a planar view, and
the antimicrobial unit is installed between the two bent portions in a planar view.
6. The indoor unit for an air conditioner according to claim 1 ,
wherein the antimicrobial unit is installed so as to longitudinally, in a planar view, run along an extending direction of the heat exchanger in a planar view.
7. The indoor unit for an air conditioner according to claim 1 ,
wherein a resistive element against air is installed on the antimicrobial unit to fill in a gap between the antimicrobial unit and the heat exchanger.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2015/069687 WO2017006466A1 (en) | 2015-07-08 | 2015-07-08 | Indoor unit for air conditioner |
Publications (1)
Publication Number | Publication Date |
---|---|
US20180195790A1 true US20180195790A1 (en) | 2018-07-12 |
Family
ID=57685231
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/740,157 Abandoned US20180195790A1 (en) | 2015-07-08 | 2015-07-08 | Indoor unit for air conditioner |
Country Status (5)
Country | Link |
---|---|
US (1) | US20180195790A1 (en) |
EP (1) | EP3321602B1 (en) |
JP (1) | JP6488011B2 (en) |
CN (1) | CN107850337A (en) |
WO (1) | WO2017006466A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20180202704A1 (en) * | 2017-01-18 | 2018-07-19 | Carrier Corporation | Condensate drain pan port |
US20220252300A1 (en) * | 2019-10-31 | 2022-08-11 | Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd. | Ducted air conditioner and assembling method thereof |
EP4160098A1 (en) * | 2021-09-29 | 2023-04-05 | Panasonic Intellectual Property Management Co., Ltd. | Indoor unit |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7031236B2 (en) * | 2017-11-08 | 2022-03-08 | 三菱電機株式会社 | Air conditioner |
JP7086615B2 (en) * | 2018-01-18 | 2022-06-20 | 三菱重工サーマルシステムズ株式会社 | Ceiling embedded air conditioner |
JP7213475B2 (en) * | 2018-02-26 | 2023-01-27 | パナソニックIpマネジメント株式会社 | Ceiling-mounted indoor unit |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110126917A1 (en) * | 2004-12-13 | 2011-06-02 | Haruo Nakata | Drain water bacteriostatic structure for air conditioner |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4585377B2 (en) * | 2005-06-02 | 2010-11-24 | 東芝キヤリア株式会社 | Air conditioner |
JP2007240113A (en) * | 2006-03-10 | 2007-09-20 | Daikin Ind Ltd | Air conditioner |
CN101078557A (en) * | 2006-05-25 | 2007-11-28 | 乐金电子(天津)电器有限公司 | Water drainage disc of air conditioner indoor machine |
JP5495527B2 (en) * | 2008-09-11 | 2014-05-21 | 三菱重工業株式会社 | Air conditioner |
JP4582246B1 (en) * | 2009-06-30 | 2010-11-17 | ダイキン工業株式会社 | Air conditioner |
JP5606419B2 (en) * | 2011-09-30 | 2014-10-15 | 三菱電機株式会社 | Air conditioner |
-
2015
- 2015-07-08 US US15/740,157 patent/US20180195790A1/en not_active Abandoned
- 2015-07-08 EP EP15897728.0A patent/EP3321602B1/en active Active
- 2015-07-08 JP JP2017527041A patent/JP6488011B2/en active Active
- 2015-07-08 WO PCT/JP2015/069687 patent/WO2017006466A1/en active Application Filing
- 2015-07-08 CN CN201580081572.XA patent/CN107850337A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110126917A1 (en) * | 2004-12-13 | 2011-06-02 | Haruo Nakata | Drain water bacteriostatic structure for air conditioner |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20180202704A1 (en) * | 2017-01-18 | 2018-07-19 | Carrier Corporation | Condensate drain pan port |
US10514196B2 (en) * | 2017-01-18 | 2019-12-24 | Carrier Corporation | Condensate drain pan port |
US20220252300A1 (en) * | 2019-10-31 | 2022-08-11 | Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd. | Ducted air conditioner and assembling method thereof |
EP4160098A1 (en) * | 2021-09-29 | 2023-04-05 | Panasonic Intellectual Property Management Co., Ltd. | Indoor unit |
Also Published As
Publication number | Publication date |
---|---|
WO2017006466A1 (en) | 2017-01-12 |
EP3321602B1 (en) | 2021-05-26 |
EP3321602A1 (en) | 2018-05-16 |
JP6488011B2 (en) | 2019-03-20 |
CN107850337A (en) | 2018-03-27 |
EP3321602A4 (en) | 2019-02-27 |
JPWO2017006466A1 (en) | 2018-03-22 |
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