EP1672289A2 - Klimaanlage - Google Patents

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Publication number
EP1672289A2
EP1672289A2 EP05027968A EP05027968A EP1672289A2 EP 1672289 A2 EP1672289 A2 EP 1672289A2 EP 05027968 A EP05027968 A EP 05027968A EP 05027968 A EP05027968 A EP 05027968A EP 1672289 A2 EP1672289 A2 EP 1672289A2
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
coolant tube
air conditioner
fins
lower portion
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.)
Granted
Application number
EP05027968A
Other languages
English (en)
French (fr)
Other versions
EP1672289B1 (de
EP1672289A3 (de
Inventor
Naoto Fujita
Kenji Shirai
Hiroharu Kurisutani
Atsushi Takeuchi
Masahide Nakayama
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.)
Panasonic Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of EP1672289A2 publication Critical patent/EP1672289A2/de
Publication of EP1672289A3 publication Critical patent/EP1672289A3/de
Application granted granted Critical
Publication of EP1672289B1 publication Critical patent/EP1672289B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
    • F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
    • F28F1/325—Fins with openings
    • 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

Definitions

  • the present invention relates to an air conditioner having a thin and compact housing.
  • a heat exchanger is disposed between an air suction opening provided in a front or a top surface of the housing and a cross flow fan installed within the housing.
  • an air conditioner with a heat exchanger unit including an upper heat exchanger and a lower heat exchanger, wherein the lower heat exchanger is disposed between a front surface of a housing and a cross flow fan such that it stands almost upright on a drain pan, whereas the upper heat exchanger is connected to the upper end of the lower heat exchanger such that it is inclined toward the rear portion of the housing (see, for example, Japanese Patent Laid-open Application No. H9-210452).
  • the upper heat exchanger is designed to be thicker than the lower heat exchanger.
  • Fig. 4 shows a cross sectional view of a conventional air conditioner disclosed in Japanese Patent Laid-open Application No. H9-210452.
  • lower heat exchanger 12 is installed between front surface 1a of the housing of the air conditioner and cross flow fan 4 such that it almost stands upright on drain pan 6, and upper heat exchanger 11 is installed on an upper end portion of lower heat exchanger 12 such that its rear surface is connected to the rear surface of lower heat exchanger 12 at joint portion 13.
  • front portion 14 of the lower end of upper heat exchanger 11 is cut obliquely such that its end is aligned with the front surface of lower heat exchanger 12.
  • the heat exchanger accommodated therein must be reduced in size, requiring at least a partial reduction in thickness of the heat exchanger.
  • the front-to-back thickness of the upper heat exchanger is greater than that of the lower heat exchanger 9. If the two heat exchangers are disposed such that their rear surfaces are connected at the joint portion, the front portion of the lower end of the upper heat exchanger will protrude out more than the lower heat exchanger does. Accordingly, unless the front portion of the lower end of the upper heat exchanger is cut obliquely such that its end is substantially aligned with the front surface of the lower heat exchanger, condensed water will spurt out from the housing.
  • the amount of heat exchange will be reduced and a velocity distribution of air stream passing through the heat exchanger will become non-uniform, which will, in turn, detrimentally affect the heat exchanging capacity of the of the heat exchanger or cause the temperature of the coolant tube to become non-uniform, resulting in, for example, dews condensing at the fan in hot and humid environments.
  • an object of the present invention to provide an air conditioner having a thin and compact housing, capable of preventing, without increasing the cost, condensed water from spurting out and dews from condensing at the fan, thereby improving its heat exchange capacity.
  • an air conditioner including: a housing provided with an air suction opening at a front surface or a top surface thereof; a cross flow fan disposed in the housing; one heat exchanger installed between the air suction opening and the cross flow fan; and a coolant tube of passing through said one heat exchanger, wherein said one heat exchanger is fabricated as a single body whose front and rear surfaces are formed as a continuous surface and the coolant tube is arranged in a single row in a lower portion of said one heat exchanger while the coolant tube is arranged in two or more rows in an upper portion of said one heat exchanger.
  • Fig. 1 is a cross sectional view of an air conditioner in accordance with a first preferred embodiment of the present invention.
  • the air conditioner housing 1 is provided with air suction opening 2 in its front surface 1a or top surface 1b, and air discharge opening 3 at its lower portion. Further, cross flow fan 4 is disposed in a lower portion of housing 1 and front heat exchanger 5a is installed between air suction opening 2 and cross flow fan 4.
  • front heat exchanger 5a is configured as a singe body whose front and rear surfaces are formed as a continuous surface and it is installed on drain pan 6.
  • coolant tube 7 is arranged in front heat exchanger 5a in different number of rows in a lower portion and an upper portion of front heat exchanger 5a: a single row in the lower portion and two or more, e.g., two rows in the upper portion.
  • front heat exchanger 5a includes a number of fins 8 (see Fig. 3) arranged in parallel to each other along a horizontal direction (i.e., along a direction approximately perpendicular to the paper of Fig. 1), and coolant tube 7 is configured such that it passes through fins 8 in a zigzag pattern.
  • Room air drawn into the air conditioner via air suction opening 2 by cross flow fan 4 is blown back out to the room through air discharge opening 3 after being cooled by heat exchanger 5a.
  • coolant tube 7 of front heat exchanger 5a is arranged in one row in the lower portion of front heat exchanger 5a and two rows in the upper portion thereof.
  • front heat exchanger 5a is fabricated as a single body whose front and rear surfaces are formed as a continuous surface. Therefore, unlike the conventional heat exchanger 10 as shown in Fig. 4, the upper portion of front heat exchanger 5a with two rows of coolant tube does not protrudes out more than the lower portion thereof with the single row of coolant tube, thereby preventing condensed water from spouting out of front heat exchanger 5a.
  • front heat exchanger 5a As a result of forming front heat exchanger 5a as a single body, a gap which used to be present at joint portion 13 between conventional upper and lower heat exchanger 11 and 12 does not exist, allowing condensed water to flow down along the entire surfaces of fins 8a uniformly, which, will, in turn, allow an effective treatment thereof.
  • the single-body heat exchanger by employing the single-body heat exchanger, it is possible to avoid the configuration in which the upper portion of the heat exchanger with the coolant tube arranged in tube or more rows more protrudes out than the lower portion of the heat exchanger with the coolant tow arranged in the single row, thereby preventing condensed water from spouting out. Furthermore, due to the absence of a gap at the joint portion between the upper and the lower portion of the heat exchanger, condensed water is allowed to flow down along the entire surfaces of the fins uniformly, allowing an effective treatment thereof. In addition, a machining process for, e.g., cutting out a part of the heat exchanger or forming a notch therein becomes unnecessary and thus no metal/material waste s are generated, making the configuration in accordance with the first preferred embodiment cost effective.
  • Fig. 2 shows a cross sectional view of an air conditioner in accordance with a second preferred embodiment of the present invention.
  • parts identical to those described in the first preferred embodiment will be assigned same reference numerals, and description thereof will be omitted.
  • heat exchanger unit 5 includes front heat exchanger 5a formed as a single body; and rear heat exchanger 5b connected to the upper end portion of front heat exchanger 5a, wherein front and rear heat exchangers 5a and 5b are coupled in a substantially reversed "V" shape.
  • a high-performance heat exchanger with an increased heat transfer area is realized without having to change the dimension of the housing 1 height-wise, by folding heat exchanger unit 5 multiple times. Further, with such a configuration of heat exchanger 5, the installation space for heat exchanger 5 is reduced, improving the space utilization thereof.
  • the gap present at joint portion 13 of the upper and the lower heat exchangers of the conventional air conditioner, which was functionally useless therein, can be utilized as an effective heat transfer area. Therefore, the capacity of heat exchanger 5 can be increased. Further, the velocity of airflow in the front heat exchanger 5a's lower portion where coolant tube 7 is arranged in a single row (hereinafter, simply referred to as "single-row portion"), is higher than those in the front heat exchanger 5a's upper portion and rear heat exchanger 5b where coolant tube 7 is arranged in two rows (hereinafter, simply referred to as "two-row portions").
  • FIG. 3 there is provided a cross sectional view illustrating an arrangement of fins of a heat exchanger unit in accordance with a third preferred embodiment of the present invention.
  • parts identical to those described in the first or the second preferred embodiments will be assigned same reference numerals, and detailed description thereof will be omitted.
  • the air flow resistance of the lower single-row portion of front heat exchanger 5a can be increased by lowering the heights of slits 15 of fins 8b. With this configuration, an amount of air passing through the single-row portion of front heat exchanger 5a can be reduced without having to use the blocking member, preventing dews from condensing at the fan and providing a cost cutting effect.
  • the air conditioner in accordance with the present invention as described above employs a thin and compact housing and is capable of preventing condensed water from spurting out or dews from condensing at the fan without increasing costs, all of which leading to an enhanced heat exchange capacity.
  • the air conditioner in accordance with the present invention is thin and compact and is capable of carrying out a treatment of water efficiently. Therefore, the present invention has advantages when it is applied to a multi air conditioner, a dehumidifier, or the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Geometry (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
EP05027968A 2004-12-20 2005-12-20 Klimaanlage Expired - Lifetime EP1672289B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004367175A JP2006170584A (ja) 2004-12-20 2004-12-20 空気調和機

Publications (3)

Publication Number Publication Date
EP1672289A2 true EP1672289A2 (de) 2006-06-21
EP1672289A3 EP1672289A3 (de) 2008-01-16
EP1672289B1 EP1672289B1 (de) 2010-11-17

Family

ID=35998469

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05027968A Expired - Lifetime EP1672289B1 (de) 2004-12-20 2005-12-20 Klimaanlage

Country Status (4)

Country Link
EP (1) EP1672289B1 (de)
JP (1) JP2006170584A (de)
CN (1) CN1793748A (de)
ES (1) ES2352065T3 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106678970B (zh) * 2017-01-03 2022-11-11 美的集团股份有限公司 空调柜机和空调柜机的出风控制方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63101639A (ja) 1986-10-17 1988-05-06 Hitachi Ltd 空気調和機
JPH11183077A (ja) 1997-12-19 1999-07-06 Fujitsu General Ltd 空気調和機の室内機

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63233225A (ja) * 1987-03-20 1988-09-28 Matsushita Electric Ind Co Ltd 空気調和機
JPH03255823A (ja) * 1990-03-07 1991-11-14 Matsushita Electric Ind Co Ltd 空気調和機
JPH05296483A (ja) * 1992-04-17 1993-11-09 Toshiba Corp 空気調和装置
JP3091830B2 (ja) * 1995-05-22 2000-09-25 東芝キヤリア株式会社 空気調和機
US5613554A (en) * 1995-06-23 1997-03-25 Heatcraft Inc. A-coil heat exchanger
JP3612846B2 (ja) * 1996-02-05 2005-01-19 ダイキン工業株式会社 空気調和機
KR19980085720A (ko) * 1997-05-30 1998-12-05 윤종용 열교환기
JP2003090691A (ja) * 2001-09-18 2003-03-28 Mitsubishi Electric Corp フィンチューブ型熱交換器およびこれを用いた冷凍サイクル

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63101639A (ja) 1986-10-17 1988-05-06 Hitachi Ltd 空気調和機
JPH11183077A (ja) 1997-12-19 1999-07-06 Fujitsu General Ltd 空気調和機の室内機

Also Published As

Publication number Publication date
EP1672289B1 (de) 2010-11-17
ES2352065T3 (es) 2011-02-15
CN1793748A (zh) 2006-06-28
EP1672289A3 (de) 2008-01-16
JP2006170584A (ja) 2006-06-29

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