EP1382917A1 - Klimaanlage - Google Patents

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Publication number
EP1382917A1
EP1382917A1 EP02702856A EP02702856A EP1382917A1 EP 1382917 A1 EP1382917 A1 EP 1382917A1 EP 02702856 A EP02702856 A EP 02702856A EP 02702856 A EP02702856 A EP 02702856A EP 1382917 A1 EP1382917 A1 EP 1382917A1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
air
casing
proximate
centrifugal fan
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.)
Withdrawn
Application number
EP02702856A
Other languages
English (en)
French (fr)
Other versions
EP1382917A4 (de
Inventor
Tsunehisa DAIKIN INDUSTRIES LTD. SANAGI
Masahito DAIKIN INDUSTRIES LTD. HIGASHIDA
Makio DAIKIN INDUSTRIES LTD. TAKEUCHI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daikin Industries Ltd
Original Assignee
Daikin Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Daikin Industries Ltd filed Critical Daikin Industries Ltd
Publication of EP1382917A1 publication Critical patent/EP1382917A1/de
Publication of EP1382917A4 publication Critical patent/EP1382917A4/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0022—Centrifugal or radial fans
    • 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
    • F24F1/0035—Indoor units, e.g. fan coil units characterised by introduction of outside air to the room
    • 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
    • F24F1/0041—Indoor units, e.g. fan coil units characterised by exhaustion of inside air from the room
    • 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
    • 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
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the 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
    • 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
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0067—Indoor units, e.g. fan coil units characterised by heat exchangers by the shape of the heat exchangers or of parts thereof, e.g. of their fins
    • 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
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F24F2013/0616—Outlets that have intake openings

Definitions

  • the present invention relates to an air conditioner, and more particularly relates to an air conditioner recessed in a ceiling.
  • An air conditioner comprises an outdoor unit, which includes a compressor, a fan, and a heat exchanger, and which is installed outdoors; and an indoor unit, which includes a fan and a heat exchanger.
  • Types of indoor units include a type attached to a wall, and a type recessed in a ceiling.
  • the indoor unit of the ceiling-recessed type principally comprises a casing having an inlet and an outlet on the bottom side, a centrifugal fan disposed inside the casing, and a heat exchanger disposed between the centrifugal fan and the outlet.
  • the indoor air is taken in from the inlet into the casing by the centrifugal fan. Further, the air taken in is blown in the horizontal direction.
  • the air delivered from the centrifugal fan is heat exchanged in the heat exchanger, which is disposed so that it surrounds the centrifugal fan. Subsequently, that air is supplied from the outlet to the indoor space.
  • the ventilation from the outlet of the air conditioner may become uneven because of the shape of the internal ventilation unit.
  • a ceiling-recessed indoor unit is disposed in the ceiling, the size of the casing is limited, and a centrifugal fan and a heat exchanger are disposed in that limited casing space. Therefore, it is difficult to prevent the ventilation from becoming uneven. Further, if the ventilation becomes uneven, it leads to the generation of ventilation noise from the part where there is a strong airflow, and also leads to a reduction in cooling and heating performance.
  • the object of the present invention is to provide a uniform wind speed distribution at the outlet of an indoor unit in an air conditioner having a centrifugal fan and in addition, to improve heat exchange efficiency without increasing the dimensions of the indoor unit.
  • the air conditioner as recited in Claim 1 comprises a casing, a centrifugal fan, and a heat exchanger.
  • the casing has an inlet for sucking in air to the inside, and outlets for blowing out air to the outside.
  • the centrifugal fan is disposed in the interior of the casing.
  • the heat exchanger is provided in the interior of the casing so that it surrounds the centrifugal fan.
  • the heat exchanger is disposed so that, among air passageways extending from the centrifugal fan to the outlets via the heat exchanger, the air passageway that extends from the centrifugal fan to the outlet and that opposes the direction of the wind from the centrifugal fan is narrower than the other air passageway.
  • a heat exchanger is disposed so that, among the air passageways, the air passageways extending from the centrifugal fan to the outlets opposing the direction of the wind are narrower compared with other air passageways. Consequently, the air resistance of these air passageways increases, the airflow speed is held down, and the speed distribution of the wind blown out from the outlets can be made uniform. Thereby, it is possible to control the ventilation noise as well as to maintain cooling and heating performance.
  • the air conditioner according to Claim 2 is the air conditioner as recited in Claim 1, wherein the casing is rectangular shaped.
  • the heat exchanger has first, second, and third proximate parts, respectively in the reverse order of the rotational direction of the centrifugal fan, that are more proximate to the sidewalls of the casing than both sides of each of the proximate parts.
  • the length of a first portion of the heat exchanger between the first proximate part and the second proximate part is substantially the same as the length of a second portion between the second proximate part and the third proximate part.
  • the volume of the air blown out from the outlets becomes even, and the volume of the air that flows through the first and second portions become substantially equal.
  • the lengths of the heat exchanger in the first and second portions are substantially equal, the heat exchange efficiencies are substantially identical. Thereby, the heat exchange efficiencies in the air passageways become uniform, cooling and heating efficiencies are improved, and the temperature distribution of the air from the outlets becomes uniform.
  • the air conditioner as recited in Claim 3 comprises a casing, a centrifugal fan, and a heat exchanger.
  • the rectangular casing has an inlet for sucking in air to the inside, and outlets for blowing out air to the outside.
  • the centrifugal fan is disposed in the interior of the casing.
  • the heat exchanger is provided in the interior of the casing so that it surrounds the centrifugal fan.
  • the heat exchanger has first, second, and third proximate parts, respectively in the reverse order of the rotational direction of the centrifugal fan, that are more proximate to the casing than both sides of each of the proximate parts.
  • the first proximate part and the third proximate part of the heat exchanger are positioned in the vicinity of an axis, which passes through the center of the centrifugal fan and is orthogonal to opposing first and second sidewalls of the casing.
  • a second proximate part of the heat exchanger is disposed so that it is offset on the first proximate part side of the heat exchanger with respect to an axis, which passes through the center of the centrifugal fan and is orthogonal to opposing third and fourth sidewalls of the casing.
  • the outlets comprises first and second outlets provided respectively in the first and second sidewalls of the casing so that they interpose the first proximate part, and third and fourth outlets provided so that they interpose the third proximate part.
  • the first outlet and the second outlet are disposed in a first sidewall of the casing so that they interpose a first proximate part.
  • the downstream side of the rotational direction of the centrifugal fan is provisionally made the first outlet, and the upstream side is provisionally made the second outlet, then the wind direction of the centrifugal fan opposes the second outlet, which increases the air volume to the second outlet. Conversely, the air volume to the first outlet is smaller than the second outlet. This applies likewise for the third outlet and the fourth outlet.
  • the heat exchanger is arranged inclined with respect to the axis that passes through the center of the centrifugal fan and that is orthogonal to the casing sidewall.
  • the air resistance in the air passageway extending from the centrifugal fan to the outlets is adjusted so as to make the air volume from each of the outlets uniform.
  • the air passageway formed between the first proximate part and the second proximate part is narrower than the air passageway formed between the third proximate part and the second proximate part. Because the narrowed air passageway creates an air resistance to the flow of air blown out from the centrifugal fan, the airflow that passes through the first proximate part and the second proximate part and is blown out from the second outlet is less than the other air passageways, and the speed distribution of the wind blown out from the outlets can be made uniform. Thereby, the ventilation noise can be controlled, and cooling and heating performance can also be maintained.
  • the air conditioner as recited in Claim 4 is the air conditioner as recited in Claim 3, wherein the length of a first portion of the heat exchanger between the first proximate part and the second proximate part is substantially the same as the length of a second portion between the second proximate part and a third proximate part.
  • the heat exchange efficiencies in the air passageways are substantially identical, the same as in Claim 2. Thereby, the heat exchange efficiencies in the air passageways are made uniform, the cooling and heating efficiencies are improved, and the temperature distribution of the air from each of the outlets is made uniform.
  • the air conditioner as recited in Claim 5 is the air conditioner as recited in Claim 2 or Claim 4, wherein the heat exchanger comprises a bent part that is bent in the direction of the interior of the casing in the first portion.
  • the second proximate part Because the position of the second proximate part is offset toward the first proximate part side, it is necessary to bend the second proximate part in order to make the length of the heat exchanger in the first and second portions equal. At this point, the heat exchanger in the first portion is bent in a direction toward the interior of the casing. Thereby, the lengths of the heat exchanger are equalized without the need to change the size of the casing, and the configuration is simplified.
  • the air conditioner as recited in Claim 6 is the air conditioner as recited in any one claim of Claim 1 to Claim 5, wherein the heat exchanger comprises heat exchanger main bodies and a connecting part that connects the heat exchanger main bodies.
  • the number of bending processes per heat exchanger can be reduced. Thereby, the frequency of heat exchanger defects can be controlled.
  • the air conditioner as recited in Claim 7 comprises a casing, a centrifugal fan, a heat exchanger, and a coolant supply unit.
  • the casing comprises an inlet for sucking in air to the inside, and outlets for blowing out air to the outside and which are disposed rectangularly.
  • the centrifugal fan is disposed in the interior of the casing.
  • the heat exchanger is provided in the interior of the casing so that it surrounds the centrifugal fan, and is disposed rectangularly on the inner side of the outlets.
  • the coolant supply unit is provided at one comer of the heat exchanger, and supplies a coolant to the heat exchanger.
  • the heat exchanger comprises an extension part on the downstream side of the rotational direction of the centrifugal fan with respect to the coolant supply unit.
  • the heat exchanger is provided with an extension part with respect to the coolant supply unit on the downstream side of the rotational direction of the centrifugal fan.
  • the air conditioner as recited in Claim 8 is the air conditioner as recited in Claim 7, wherein the extension part is bent in the direction of the interior of the casing.
  • the extension part of the heat exchanger with respect to the coolant supply unit on the downstream side of the rotational direction of the centrifugal fan is a bent part that is bent in the direction toward the interior of the casing.
  • FIG. 1 shows an exterior perspective view of the indoor unit 1 of the air conditioner according to the first embodiment of the present invention.
  • FIG. 2 is a vertical cross-sectional view and
  • FIG. 3 is a horizontal cross-sectional view of the indoor unit at a surface that includes the centrifugal fan.
  • An indoor unit 1 is a ceiling-recessed type, and comprises a casing 11 that is recessed in a ceiling.
  • a turbofan 40 centrifugal fan
  • a heat exchanger 30 are provided in the casing 11.
  • the indoor unit 1 takes in air placed in the indoor space, air conditions the air, and supplies that air to the indoor space after it has been air-conditioned by the heat exchanger.
  • the casing 11 is a case that holds members of the indoor unit 1 therein.
  • the casing 11 has an outline shape of a rectangular parallelepiped, and has a bottom plate 12 on the bottom thereof.
  • An outlet 20 is formed on the outer side of the long side of the bottom plate 12, and an inlet 21 is provided on the inner side of the outlet 20.
  • the outlet 20 is a ventilation port for supplying air that has been air-conditioned by the indoor unit 1 to the indoor space
  • the inlet 21 is a ventilation port for taking in air from the indoor space to the indoor unit 1.
  • the outlet 20 has a first outlet 20a provided on the downstream side (from the center of the long side) of the rotational direction of the turbofan 40; and a second outlet 20b provided on the upstream side of the rotational direction. Further, on the other long side, the outlet 20 has a third outlet 20c provided at a position opposing the second outlet 20b on the downstream side (from the center of the long side) of the rotational direction of turbofan 40; and a fourth outlet 20d provided at a position opposing the first outlet 20a on the upstream side of the rotational direction.
  • the turbofan 40 is positioned substantially at the center of the casing 11.
  • the turbofan 40 is provided with vanes at the periphery. By rotating in the direction of the arrow R in FIG. 3, pushes out the air in the interior of the turbofan 40 in the rotational direction, producing an airflow in the interior of the indoor unit 1.
  • the heat exchanger 30 is a member that exchanges heat with the ventilating air. Further, the heat exchanger 30 is formed in a substantially rhombic shape so that it surrounds the turbofan 40, and has first, second, and third proximate parts 50a, 50b, and 50c that are proximate to the inner wall of the casing 11 more than both sides of each of the proximate parts 50a, 50b, 50c, respectively.
  • the first proximate part 50a is positioned in the vicinity of an axis 14, which passes through the center of the turbofan 40 and is orthogonal to the long side of the casing 11, and is interposed between the first outlet 20a and the second outlet 20b.
  • the third proximate part 50c is positioned on the opposite side opposing the first proximate part 50a, and is interposed between the third outlet 20c and the fourth outlet 20d.
  • the second proximate part 50b is positioned on an axis 36, which is inclined toward the second outlet 20b side (the first proximate part 50a side) by just a predetermined angle from an axis 15, which passes through the center of the turbofan 40 and is orthogonal to the short side of the casing 11.
  • the heat exchanger 30 is connected to a coolant supply unit 31 at the end part of the heat exchanger 30. Further, the coolant supply unit 31 is disposed on the fourth outlet 20d side displaced with respect to the axis 15.
  • an air passageway is formed from the turbofan 40 to each of the outlets.
  • a first air passageway 35a which extends from the turbofan 40 to the first outlet 20a, is formed between the coolant supply unit 31 and the first proximate part 50a.
  • a second air passageway 35b which extends from the turbofan 40 to the second outlet 20b, is formed between the first proximate part 50a and the second proximate part 50b.
  • a third air passageway 35c which extends from the turbofan 40 to the third outlet 20c, is formed between the second proximate part 50b and the third proximate part 50c.
  • a fourth air passageway 35d which extends from the turbofan 40 to the fourth outlet 20d, is formed between the third proximate part 50c and the coolant supply unit 31.
  • portions 30a - 30d of the heat exchanger 30 are disposed corresponding to the air passageways 35a - 35d, respectively.
  • the first portion 30a is disposed in the first air passageway 35a between the coolant supply unit 31 and the first proximate part 50a
  • the second portion 30b is disposed in the second air passageway 35b between the first proximate part 50a and the second proximate part 50b.
  • the third portion 30c is disposed in the third air passageway 35c between the second proximate part 50b and the third proximate part 50c
  • the fourth portion 30d is disposed in the fourth air passageway 35d between the third proximate part 50c and the coolant supply unit 31.
  • the first portion 30a and third portion 30c are shorter than the second portion 30b and fourth the portion 30d.
  • the interior of the indoor unit 1 is ventilated by the rotation of the turbofan 40. Air is taken into the interior of the indoor unit 1 from the inlet 21, which faces the indoor space. The air taken in is then delivered by the turbofan 40 to the surroundings thereof. The air that has been pushed out is heat exchanged by the heat exchanger 30, which is arranged at the circumference of the turbofan 40, and is then supplied from the outlets 20a - 20d to the indoor space.
  • the following discusses the wind speed (airflow) of the air passageways 35a - 35d for the case in which the turbofan 40 has rotated.
  • the second outlet 20b opposes the direction of the wind from the turbofan 40, and the wind speed of the air from the turbofan 40 increases if there is no heat exchanger 30.
  • the third outlet 20c is arranged at a position along the direction of the wind from the turbofan 40, and does not oppose the direction of the wind from the turbofan 40.
  • the third outlet 20c is disposed at a position at which the wind speed of the air from the turbofan 40 is slower if there is no heat exchanger 30.
  • This is the same for the first outlet 20a and the fourth outlet 20d side of the axis 14. Namely, because of the rotational direction of the turbofan 40, and the arrangement of the outlets 20a, 20d, the wind speed of the air to the fourth outlet 20d is faster compared with the first air passageway 35a if there is no heat exchanger 30.
  • the substantially rhombically formed heat exchanger 30 is disposed inclined with respect to the axis 15, and the widths (lengths) of the portions of the heat exchanger 30 in the air passageways 35a - 35d to the outlets 20a - 20d are not equal.
  • the widths of the second and fourth portions 30b, 30d are narrower than the widths of the first and third portions 30a, 30c.
  • the air resistance when passing through the second and fourth portions 30b, 30d is greater than when passing through the first and third portions 30a, 30c.
  • the volume of air (wind speed) that passes through each of the air passageways 35a - 35d and that is blown out from the air outlets 20a - 20d, respectively, are made uniform.
  • FIG. 4 is a horizontal cross-sectional view of the indoor unit 2 of the air conditioner according to the second embodiment of the present invention.
  • the air resistance of each air passageway varies due to the offset arrangement of the heat exchanger, and the present embodiment aims to make the air volume from the outlets uniform.
  • the length (i.e., the heat exchange surface area) of each portion of the heat exchanger, wherein each portion is disposed in an air passageway differs. Accordingly, although the air volume from each outlet has been made uniform, there is a risk that the temperature distribution will become uneven.
  • the second embodiment differs from the first embodiment only in the constitution of the heat exchanger; other constitutional aspects are the same.
  • a heat exchanger main body 32 is a member that exchanges heat with the air that is ventilated, and is disposed so that it surrounds the turbofan 40, the same as mentioned earlier.
  • the heat exchanger 32 comprises a first main body 321, which is disposed on the first and second outlets 20a, 20b side of the axis 15, which passes through the center of the turbofan 40 and is orthogonal to the short side of the casing 11; and a second main body 322, which is disposed on the third and fourth outlets 20c, 20d side, i.e., on the reverse side.
  • first main body 321 and the second main body 322 are connected by a connecting member 55 at one end in the direction along the axis 15, and are connected by a coolant supply unit 33 at the other end. Furthermore, the coolant supply unit 33 is disposed so that it is shifted toward the fourth outlet 20d side of the axis 15.
  • the heat exchanger 32 has first, second, and third proximate parts 53a, 53b and 53c that are more proximate to the inner wall of the casing 11 than both sides of each of the proximate parts 53a, 53b, 53c.
  • the first proximate part 53a is positioned in the vicinity of the axis 14, and is interposed between the first outlet 20a and the second outlet 20b.
  • the third proximate part 53c is positioned on the reverse side of and opposing the first proximate part 53a, and is interposed between the third outlet 20c and the fourth outlet 20d.
  • the second proximate part 53b is positioned in the vicinity of the axis 37, which is inclined toward the second outlet 20b side of the axis 15 by a predetermined angle.
  • the first air passageway 35a which extends from the turbofan 40 to the first outlet 20a, is formed between the coolant supply unit 33 and the first proximate part 53a.
  • the second air passageway 35b which extends from the turbofan 40 to the second outlet 20b, is formed between the first proximate part 53a and the second proximate part 53b.
  • the third air passageway 35c which extends from the turbofan 40 to the third outlet 20c, is formed between the second proximate part 53b and the third proximate part 53c.
  • the fourth air passageway 35d which extends from the turbofan 40 to the fourth outlet 20d, is formed between the third proximate part 53c and the coolant supply unit 33.
  • a first portion 32a is disposed in the first air passageway 35a.
  • a second portion 32b is disposed in the second air passageway 35b.
  • a third portion 32c is disposed in the third air passageway 35c.
  • a fourth portion 32d is disposed in the fourth air passageway 35d.
  • a bent part 54 is formed in the first and third portions 32a, 32c of the heat exchanger 32, such that the bent part 54 bulges toward the outer side of the casing 11, and a bent part 52 is formed in the second and fourth portions 32b, 32d such that the bent part 52 bulges toward the inner side of the casing 11.
  • the lengths of the heat exchanger in the four portions 32a-32d are substantially equal, and the heat exchange surface of each area is accordingly substantially equal.
  • the basic operation of the indoor unit 2 is the same as the operation of the first embodiment.
  • examining the second outlet 20b and the third outlet 20c side of the axis 14 shows that the wind speed of the air to the second outlet 20b is faster compared with the wind speed of the air to the third outlet 20c if there is no heat exchanger.
  • the wind speed of the air to the fourth outlet 20d is faster compared with the wind speed of the air to the first outlet 20a.
  • the second proximate part 53b in the present embodiment is disposed inclined with respect to the axis 15, and the flow of air (wind speed) that blows out from each of the outlets 20a - 20d is uniform. Further, bending the heat exchanger 32 makes the heat exchange surface area in each portion substantially equal, and makes the heat exchange efficiency in each of the air passageways 35a - 35d uniform. Thereby, the cooling and heating efficiency can be improved compared with a conventional air conditioner. In addition, the temperature distribution of the air blown out from each of the outlets 20a - 20d can be made uniform.
  • the bent part 52 is formed in the heat exchanger 32, thus ensuring a heat exchange surface area, the heat exchange surface area can be enlarged without increasing the size of the indoor unit 2.
  • FIG. 5 is a horizontal cross-sectional view of the indoor unit 3 of the air conditioner according to the third embodiment of the present invention.
  • the cross-section of a casing 13 is square-shaped, and is beveled at the four comers. Further, an outlet 22 and an inlet (not shown) are disposed along each of the four sides of the periphery of the bottom plate.
  • the turbofan 40 is disposed at the center part of the casing 13.
  • a heat exchanger 34 is disposed in a substantially square shape so that it surrounds the turbofan 40 on the inner side of the outlet 22, and both ends are connected to a coolant supply unit 38, which is disposed at one comer of the casing 13. Further, because the heat exchanger 34 is disposed along each side of a square shape, it has a bent part 56 at positions corresponding to each comer. In addition, among the four linear parts of the heat exchanger 34 there is a bent part 52, which is bent so that it bulges with respect to the coolant supply unit 38 toward the interior of the casing 13 on the downstream side of the rotational direction of the turbofan 40.
  • the basic operation of the indoor unit 3 is the same as the operation of the first embodiment.
  • an air passageway is formed in the pathways extending from the turbofan 40 to each of the outlets 22.
  • the air in the air passageway on the downstream side of the rotational direction of the turbofan 40 proximate to the coolant supply unit 38 is guided to the wall of the coolant supply unit 38, and the like, and the flow of air therein is greater than in other air passageways.
  • the bent part 52 is provided in a portion positioned in the air passageway through which much air flows, and the bent part 52 has a large heat exchange surface area. Thereby, cooling and heating performance are improved because the heat exchange efficiency is improved, and because the air blown out from each of the outlets 22 is air-conditioned substantially uniformly.
  • the use of the present invention enables the speed distribution of the wind blown out from the outlets to be made uniform. Thereby, the ventilation noise can be controlled, and cooling and heating performance can be maintained.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
  • Air-Flow Control Members (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP02702856A 2001-03-30 2002-03-08 Klimaanlage Withdrawn EP1382917A4 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2001099393 2001-03-30
JP2001099393A JP4724939B2 (ja) 2001-03-30 2001-03-30 空気調和機
PCT/JP2002/002224 WO2002081974A1 (fr) 2001-03-30 2002-03-08 Appareil de climatisation

Publications (2)

Publication Number Publication Date
EP1382917A1 true EP1382917A1 (de) 2004-01-21
EP1382917A4 EP1382917A4 (de) 2007-03-14

Family

ID=18952935

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02702856A Withdrawn EP1382917A4 (de) 2001-03-30 2002-03-08 Klimaanlage

Country Status (5)

Country Link
EP (1) EP1382917A4 (de)
JP (1) JP4724939B2 (de)
CN (2) CN1184438C (de)
AU (1) AU2002236276B2 (de)
WO (1) WO2002081974A1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1947397A1 (de) * 2005-11-11 2008-07-23 Daikin Industries, Ltd. Innenraumplatte für klimaanlage und klimaanlage
EP1975519A1 (de) * 2006-01-04 2008-10-01 Daikin Industries, Ltd. Innenraumeinheit für klimaanlage
EP2827071A4 (de) * 2012-03-16 2015-12-09 Daikin Ind Ltd Deckenintegrierte klimaanlage mit bidirektionalem luftaustritt
EP3614064A4 (de) * 2017-05-24 2020-04-15 Daikin Industries, Ltd. Innenraumeinheit für klimaanlage
EP3614057A4 (de) * 2017-05-24 2020-04-15 Daikin Industries, Ltd. Innenraumeinheit für klimaanlage
EP3798523A4 (de) * 2019-01-14 2021-09-29 Qingdao Haier Air-Conditioning Electronic Co., Ltd Wärmetauscher für deckenklimaanlage und eine deckenklimaanlage

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4141368B2 (ja) * 2003-10-10 2008-08-27 三洋電機株式会社 天井埋込型空気調和装置
CN105156345B (zh) * 2015-09-11 2018-06-22 珠海格力电器股份有限公司 一种立式空调器
JP6409907B1 (ja) * 2017-05-24 2018-10-24 ダイキン工業株式会社 空気調和機の室内機
JP7343601B2 (ja) * 2019-09-24 2023-09-12 東芝キヤリア株式会社 冷凍サイクル装置の室内機、および羽根車

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0985889A2 (de) * 1998-07-29 2000-03-15 Hitachi, Ltd. Innenraumeinheit für Deckenmontage
GB2344878A (en) * 1998-12-18 2000-06-21 Hitachi Ltd A ceiling embedded air conditioner

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62162830A (ja) * 1986-01-13 1987-07-18 Matsushita Electric Ind Co Ltd 空気調和装置
JPH0450318A (ja) * 1990-06-12 1992-02-19 Kanebo Ltd 耐光性に優れた原着ポリエステル繊維
JPH0450318U (de) * 1990-08-31 1992-04-28
JPH055536A (ja) * 1990-11-07 1993-01-14 Daikin Ind Ltd 空気調和装置
JP3606968B2 (ja) * 1995-11-08 2005-01-05 三菱電機株式会社 空気調和機
JPH09229467A (ja) * 1996-02-26 1997-09-05 Matsushita Refrig Co Ltd 熱交換器
JPH11148711A (ja) * 1997-11-14 1999-06-02 Mitsubishi Heavy Ind Ltd 天井埋込型空気調和機
JPH11153344A (ja) * 1997-11-21 1999-06-08 Mitsubishi Heavy Ind Ltd 空気調和機
JP2000121089A (ja) * 1998-10-20 2000-04-28 Hitachi Ltd 空気調和機
JP2000220859A (ja) * 1999-02-01 2000-08-08 Hitachi Ltd 空気調和機

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0985889A2 (de) * 1998-07-29 2000-03-15 Hitachi, Ltd. Innenraumeinheit für Deckenmontage
GB2344878A (en) * 1998-12-18 2000-06-21 Hitachi Ltd A ceiling embedded air conditioner

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO02081974A1 *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1947397A1 (de) * 2005-11-11 2008-07-23 Daikin Industries, Ltd. Innenraumplatte für klimaanlage und klimaanlage
EP1947397A4 (de) * 2005-11-11 2011-01-19 Daikin Ind Ltd Innenraumplatte für klimaanlage und klimaanlage
US8230693B2 (en) 2005-11-11 2012-07-31 Daikin Industries, Ltd. Interior panel of air conditioner and air conditioner
EP1975519A1 (de) * 2006-01-04 2008-10-01 Daikin Industries, Ltd. Innenraumeinheit für klimaanlage
EP1975519A4 (de) * 2006-01-04 2013-04-03 Daikin Ind Ltd Innenraumeinheit für klimaanlage
EP2827071A4 (de) * 2012-03-16 2015-12-09 Daikin Ind Ltd Deckenintegrierte klimaanlage mit bidirektionalem luftaustritt
EP3614064A4 (de) * 2017-05-24 2020-04-15 Daikin Industries, Ltd. Innenraumeinheit für klimaanlage
EP3614057A4 (de) * 2017-05-24 2020-04-15 Daikin Industries, Ltd. Innenraumeinheit für klimaanlage
EP3798523A4 (de) * 2019-01-14 2021-09-29 Qingdao Haier Air-Conditioning Electronic Co., Ltd Wärmetauscher für deckenklimaanlage und eine deckenklimaanlage

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CN2526722Y (zh) 2002-12-18
WO2002081974A1 (fr) 2002-10-17
JP4724939B2 (ja) 2011-07-13
EP1382917A4 (de) 2007-03-14
CN1184438C (zh) 2005-01-12
AU2002236276B2 (en) 2005-04-21
JP2002295891A (ja) 2002-10-09
CN1379213A (zh) 2002-11-13

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