EP2159497A1 - Outdoor unit of conditioning apparatus - Google Patents
Outdoor unit of conditioning apparatus Download PDFInfo
- Publication number
- EP2159497A1 EP2159497A1 EP09009377A EP09009377A EP2159497A1 EP 2159497 A1 EP2159497 A1 EP 2159497A1 EP 09009377 A EP09009377 A EP 09009377A EP 09009377 A EP09009377 A EP 09009377A EP 2159497 A1 EP2159497 A1 EP 2159497A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat exchanger
- bottom plate
- conduit
- water
- outdoor unit
- 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
Links
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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
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/36—Drip trays for outdoor units
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
Definitions
- the present invention relates to an outdoor unit of an air conditioning apparatus and, more particularly, to improvement of a drain water discharge structure.
- a heat exchanger When a heating mode of operation is performed in an outdoor unit of a separate type air conditioning apparatus, a heat exchanger is deprived of heat by a turning fan. At this time, the heat exchanger condenses the water vapor in the air, causing its surface to be frosted. As time progresses, such frost develops and finally impedes air flow through the heat exchanger and prevents heat from moving. This inhibits heat exchange and heating in a room. To avoid this, the outdoor unit generally performs defrosting operation for a predetermined period of time, thereby melting the frost for resumption of heat exchange. After that, heating and defrosting modes of operation are repeated.
- a drain water discharge conduit provided on its bottom plate beneath the heat exchanger for discharging the drain water.
- Such a drain water discharge conduit has a horizontal section formed at a lowest portion thereof, the horizontal section having a drain hole through which the drain water is discharged (for example, see Japanese Unexamined Patent Application Publication No. 2005-188837 ( Fig. 1 ) and Japanese Unexamined Patent Application Publication No. 2005-213779 (Figs. 6 and 8)).
- Drain water droplets from such an outdoor unit drop onto the discharge conduit into the drain hole through which the drain water is discharged to the outside.
- the drain water may freeze before reaching the drain hole at low ambient temperatures.
- the drain water may freeze in the horizontal section around the drain hole, blocking the drain hole or the drain water discharge conduit. If this happens, not only does the frozen drain water inhibit the discharge of the drain water to the outside, but also may cause the horizontal section to further expand to such a degree that the flow of the drain water is degraded, which causes a great amount of water remaining inside the unit to more and more tend to freeze.
- each time heating and defrosting modes of operation are repeated, the frozen drain water further develops, causing the heat exchanger to malfunction and damaging the outdoor unit.
- a first object of the present invention is to provide an outdoor unit which ensures that drain water is discharged on a rapid manner, and a drain hole is prevented from freezing so that the drain water can be discharged even in a cold area.
- a second object of the present invention is to provide an outdoor unit which has a bottom plate having a shallow depth, thereby improving the workability as well as strength.
- An outdoor unit of an air conditioning apparatus includes a bottom plate on which at least a heat exchanger is placed, a conduit forming wall formed upright on the bottom plate along the heat exchanger, and a water conduit formed by the conduit forming wall which has a drain hole and a downwardly tilted surface continuous with the drain hole.
- a bottom plate has a conduit forming wall formed upright thereon along the heat exchanger, and a water conduit formed by the conduit forming wall has a drain hole and a downwardly tilted surface continuous with the drain hole, which allows drain water droplets to flow to the drain hole without reducing its flow rate.
- the conduit forming wall formed upright on the bottom plate along the heat exchanger serves as a reinforcement rib of the bottom plate. Accordingly, workability as well as strength can be improved without deepening the bottom plate in the direction of the depth.
- Fig. 1 is a perspective view showing a bottom plate of an outdoor unit of an air conditioning apparatus according to an embodiment of the present invention.
- Fig. 2 is a perspective view showing the bottom plate on which a heat exchanger and a compressor are mounted.
- Fig. 3 is a top view showing the bottom plate on which a blower and a partition in addition to those as shown in Fig. 2 are mounted.
- Fig. 4 is a perspective view showing the appearance of the entire outdoor unit.
- An outdoor unit 100 of an air conditioning apparatus includes a heat exchanger 2, a compressor 3, a blower 4, and a partition 5 mounted on a steel bottom plate 1 in the form of a rectangular solid, as shown in Figs. 1 to 4 . These components are enclosed by an enclosure constructed of a peripheral wall 6 and a top plate 7.
- the bottom plate 1 includes a frame 1a (hereinafter referred to as "peripheral frame") surrounding the bottom plate 1 and a conduit forming wall 1c formed upright along the heat exchanger 2.
- a water conduit 1d is formed by partitioning with the conduit forming wall 1c and the peripheral frame 1a.
- the conduit forming wall 1c prevents drain water from flowing into below the heat exchanger 2 or out of the water conduit.1d.
- the water conduit 1d has a normally open drain hole 1b for discharging drain water to the outside and a downwardly tilted surface 1e (equal to the bottom face of the water conduit) continuous with the drain hole 1b.
- the bottom plate 1 is also formed as a whole to be downwardly tilted toward the drain hole 1b.
- the water conduit 1d has a plurality of heat exchanger mounting bases 1f formed at an edge and a corner thereof.
- the heat exchanger 2 is placed and secured on the mounting bases 1f.
- the mounting bases 1f are formed to have a height smaller than that of the adjacent conduit forming wall 1c or the peripheral frame 1a.
- the bottom plate 1 has the peripheral frame 1a, the conduit forming wall 1c, the tilted surface 1e, and the heat exchanger mounting bases 1f integrally formed thereon by press working.
- the surface of the heat exchanger 2 in the outdoor unit 100 becomes frosted.
- Defrosting mode of operation is performed for a certain period of time to melt the frost on the surface.
- Water generated by such defrosting mode of operation drops as drain water onto the downwardly tilted surface 1e continuous with the drain hole 1b in the water conduit 1d on the bottom plate 1 and is guided to the drain hole 1b. Accordingly, such drain water flows at a high rate only below the heat exchanger 2, while concentrating. This prevents the drain water from freezing in the water conduit 1d before it reaches the drain hole 1b even at low ambient temperatures in a cold area, thereby securely discharging the drain water.
- the outdoor unit of an air conditioning apparatus includes the downwardly tilted surface 1e continuous with the drain hole 1b and the conduit forming wall 1c formed upright along the heat exchanger 2 so as to prevent the drain water from flowing other than below the heat exchanger 2, which allows drain water passages to concentrate, raises the drain water flow rate, and prevents the drain water from freezing before it reaches the drain hole 1b, thereby securing that the drain water is discharged to the outside. This prevents the drain hole 1b and the water conduit 1d from being blocked.
- the conduit forming wall 1c formed to have an upright structure also serves as a reinforcement rib of the bottom plate 1. This improves workability of steel sheet working (sheet metal working) as well as the strength of the bottom plate 1 without deepening the bottom plate 1 in the direction of the depth.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
Description
- The present invention relates to an outdoor unit of an air conditioning apparatus and, more particularly, to improvement of a drain water discharge structure.
- When a heating mode of operation is performed in an outdoor unit of a separate type air conditioning apparatus, a heat exchanger is deprived of heat by a turning fan. At this time, the heat exchanger condenses the water vapor in the air, causing its surface to be frosted. As time progresses, such frost develops and finally impedes air flow through the heat exchanger and prevents heat from moving. This inhibits heat exchange and heating in a room. To avoid this, the outdoor unit generally performs defrosting operation for a predetermined period of time, thereby melting the frost for resumption of heat exchange. After that, heating and defrosting modes of operation are repeated.
- During the defrosting mode of operation, the frost on the external surface of the heat exchanger melts and drops down as drain water droplets. Conventional outdoor units have a drain water discharge conduit provided on its bottom plate beneath the heat exchanger for discharging the drain water. Such a drain water discharge conduit has a horizontal section formed at a lowest portion thereof, the horizontal section having a drain hole through which the drain water is discharged (for example, see Japanese Unexamined Patent Application Publication No.
2005-188837 Fig. 1 ) and Japanese Unexamined Patent Application Publication No.2005-213779 - Drain water droplets from such an outdoor unit drop onto the discharge conduit into the drain hole through which the drain water is discharged to the outside. However, in a cold area the drain water may freeze before reaching the drain hole at low ambient temperatures. In particular, the drain water may freeze in the horizontal section around the drain hole, blocking the drain hole or the drain water discharge conduit. If this happens, not only does the frozen drain water inhibit the discharge of the drain water to the outside, but also may cause the horizontal section to further expand to such a degree that the flow of the drain water is degraded, which causes a great amount of water remaining inside the unit to more and more tend to freeze. In addition, each time heating and defrosting modes of operation are repeated, the frozen drain water further develops, causing the heat exchanger to malfunction and damaging the outdoor unit.
- The present invention has been achieved to solve the above-described problems. A first object of the present invention is to provide an outdoor unit which ensures that drain water is discharged on a rapid manner, and a drain hole is prevented from freezing so that the drain water can be discharged even in a cold area.
- A second object of the present invention is to provide an outdoor unit which has a bottom plate having a shallow depth, thereby improving the workability as well as strength.
- An outdoor unit of an air conditioning apparatus according to the present invention includes a bottom plate on which at least a heat exchanger is placed, a conduit forming wall formed upright on the bottom plate along the heat exchanger, and a water conduit formed by the conduit forming wall which has a drain hole and a downwardly tilted surface continuous with the drain hole.
- According to an outdoor unit of an air conditioning apparatus of the present invention, a bottom plate has a conduit forming wall formed upright thereon along the heat exchanger, and a water conduit formed by the conduit forming wall has a drain hole and a downwardly tilted surface continuous with the drain hole, which allows drain water droplets to flow to the drain hole without reducing its flow rate. This ensures that drain water passages concentrate and that drain water reaches the drain hole without freezing, thereby preventing the blockage of the drain hole or the water conduit. Also, the conduit forming wall formed upright on the bottom plate along the heat exchanger serves as a reinforcement rib of the bottom plate. Accordingly, workability as well as strength can be improved without deepening the bottom plate in the direction of the depth.
-
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Fig. 1 is a perspective view showing a bottom plate of an outdoor unit of an air conditioning apparatus according to an embodiment of the present invention; -
Fig. 2 is a perspective view showing the bottom plate of an outdoor unit of an air conditioning apparatus according to an embodiment of the present invention, on which a heat exchanger and a compressor are mounted; -
Fig. 3 is a top view showing the bottom plate on which a blower and a partition in addition to those as shown inFig. 2 are mounted; and -
Fig. 4 is a perspective view showing the entire outdoor unit of an air conditioning apparatus according to an embodiment of the present invention. - The present invention is described based on an embodiment as shown in the figures.
Fig. 1 is a perspective view showing a bottom plate of an outdoor unit of an air conditioning apparatus according to an embodiment of the present invention.Fig. 2 is a perspective view showing the bottom plate on which a heat exchanger and a compressor are mounted.Fig. 3 is a top view showing the bottom plate on which a blower and a partition in addition to those as shown inFig. 2 are mounted.Fig. 4 is a perspective view showing the appearance of the entire outdoor unit. - An
outdoor unit 100 of an air conditioning apparatus according to this embodiment includes aheat exchanger 2, acompressor 3, ablower 4, and apartition 5 mounted on asteel bottom plate 1 in the form of a rectangular solid, as shown inFigs. 1 to 4 . These components are enclosed by an enclosure constructed of aperipheral wall 6 and atop plate 7. - The
bottom plate 1 includes a frame 1a (hereinafter referred to as "peripheral frame") surrounding thebottom plate 1 and aconduit forming wall 1c formed upright along theheat exchanger 2. Awater conduit 1d is formed by partitioning with theconduit forming wall 1c and the peripheral frame 1a. Theconduit forming wall 1c prevents drain water from flowing into below theheat exchanger 2 or out of the water conduit.1d. Thewater conduit 1d has a normallyopen drain hole 1b for discharging drain water to the outside and a downwardlytilted surface 1e (equal to the bottom face of the water conduit) continuous with thedrain hole 1b. Thebottom plate 1 is also formed as a whole to be downwardly tilted toward thedrain hole 1b. - The
water conduit 1d has a plurality of heat exchanger mounting bases 1f formed at an edge and a corner thereof. Theheat exchanger 2 is placed and secured on the mounting bases 1f. The mounting bases 1f are formed to have a height smaller than that of the adjacentconduit forming wall 1c or the peripheral frame 1a. Thebottom plate 1 has the peripheral frame 1a, theconduit forming wall 1c, thetilted surface 1e, and the heat exchanger mounting bases 1f integrally formed thereon by press working. - When the air conditioning apparatus according to this embodiment performs heating operation, the surface of the
heat exchanger 2 in theoutdoor unit 100 becomes frosted. Defrosting mode of operation is performed for a certain period of time to melt the frost on the surface. Water generated by such defrosting mode of operation drops as drain water onto the downwardlytilted surface 1e continuous with thedrain hole 1b in thewater conduit 1d on thebottom plate 1 and is guided to thedrain hole 1b. Accordingly, such drain water flows at a high rate only below theheat exchanger 2, while concentrating. This prevents the drain water from freezing in thewater conduit 1d before it reaches thedrain hole 1b even at low ambient temperatures in a cold area, thereby securely discharging the drain water. - The mounting bases 1f formed to have a height smaller than that of the adjacent
conduit forming wall 1c or the peripheral frame 1a ensures that the drain water downwardly flowing on the external surface of theheat exchanger 2 drops onto thewater conduit 1d through the lower end of theheat exchanger 2. - As described above, the outdoor unit of an air conditioning apparatus according to this embodiment includes the downwardly
tilted surface 1e continuous with thedrain hole 1b and theconduit forming wall 1c formed upright along theheat exchanger 2 so as to prevent the drain water from flowing other than below theheat exchanger 2, which allows drain water passages to concentrate, raises the drain water flow rate, and prevents the drain water from freezing before it reaches thedrain hole 1b, thereby securing that the drain water is discharged to the outside. This prevents thedrain hole 1b and thewater conduit 1d from being blocked. - The
conduit forming wall 1c formed to have an upright structure also serves as a reinforcement rib of thebottom plate 1. This improves workability of steel sheet working (sheet metal working) as well as the strength of thebottom plate 1 without deepening thebottom plate 1 in the direction of the depth.
Claims (1)
- An outdoor unit (100) of an air conditioning apparatus, comprising:a bottom plate (1) on which at least a heat exchanger (2) is placed;a conduit forming wall (1c) formed upright on the bottom plate along the heat exchanger; anda water conduit (1d) formed by the conduit forming wall which has a drain hole (1b) and a downwardly tilted surface (1e) continuous with the drain hole.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008216301A JP2010054063A (en) | 2008-08-26 | 2008-08-26 | Outdoor unit for air conditioner |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2159497A1 true EP2159497A1 (en) | 2010-03-03 |
EP2159497A8 EP2159497A8 (en) | 2010-04-28 |
EP2159497B1 EP2159497B1 (en) | 2016-11-09 |
Family
ID=41228174
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09009377.4A Active EP2159497B1 (en) | 2008-08-26 | 2009-07-20 | Outdoor unit of conditioning apparatus |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2159497B1 (en) |
JP (1) | JP2010054063A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2991438A1 (en) * | 2012-05-30 | 2013-12-06 | Ciat Sa | CONDENSATE CONTAINER AND AIR TREATMENT APPARATUS PROVIDED WITH SUCH A TRAY |
CN106196340A (en) * | 2014-12-17 | 2016-12-07 | Lg电子株式会社 | The off-premises station of air conditioner |
CN107949749A (en) * | 2015-09-10 | 2018-04-20 | 日立江森自控空调有限公司 | refrigerating air conditioning device |
EP3705793A1 (en) | 2019-03-08 | 2020-09-09 | Daikin Industries, Ltd. | Heat source unit for a heat pump |
EP4060256A4 (en) * | 2019-11-14 | 2022-12-21 | Daikin Industries, Ltd. | Air conditioner |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5609611B2 (en) | 2010-03-11 | 2014-10-22 | 株式会社リコー | Spectral characteristic acquisition device, image evaluation device, and image forming device |
CN104089344A (en) * | 2014-07-25 | 2014-10-08 | 广东志高空调有限公司 | Outdoor unit of split wall-hanging type air-conditioner |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001065184A2 (en) * | 2000-02-29 | 2001-09-07 | Toshiba Carrier Corporation | Outdoor unit of air conditioner |
EP1403590A1 (en) * | 2002-09-30 | 2004-03-31 | BSH Bosch und Siemens Hausgeräte GmbH | Air-conditioning device |
US20050034471A1 (en) * | 2003-08-14 | 2005-02-17 | Samsung Electronics Co., Ltd. | Outdoor unit for air conditioner |
JP2005188837A (en) | 2003-12-25 | 2005-07-14 | Sanyo Electric Co Ltd | Outdoor unit for air conditioner |
JP2005213779A (en) | 2004-01-27 | 2005-08-11 | Hashizume Kiko Kk | Track structure identifying device |
WO2008084277A1 (en) * | 2007-01-10 | 2008-07-17 | Carrier Corporation | Condensate removal system |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6146365U (en) * | 1984-08-29 | 1986-03-27 | 株式会社東芝 | Air conditioner outdoor unit |
JP4696547B2 (en) * | 2004-12-13 | 2011-06-08 | ダイキン工業株式会社 | Drain water bacteriostatic structure of air conditioner |
-
2008
- 2008-08-26 JP JP2008216301A patent/JP2010054063A/en active Pending
-
2009
- 2009-07-20 EP EP09009377.4A patent/EP2159497B1/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001065184A2 (en) * | 2000-02-29 | 2001-09-07 | Toshiba Carrier Corporation | Outdoor unit of air conditioner |
EP1403590A1 (en) * | 2002-09-30 | 2004-03-31 | BSH Bosch und Siemens Hausgeräte GmbH | Air-conditioning device |
US20050034471A1 (en) * | 2003-08-14 | 2005-02-17 | Samsung Electronics Co., Ltd. | Outdoor unit for air conditioner |
JP2005188837A (en) | 2003-12-25 | 2005-07-14 | Sanyo Electric Co Ltd | Outdoor unit for air conditioner |
JP2005213779A (en) | 2004-01-27 | 2005-08-11 | Hashizume Kiko Kk | Track structure identifying device |
WO2008084277A1 (en) * | 2007-01-10 | 2008-07-17 | Carrier Corporation | Condensate removal system |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2991438A1 (en) * | 2012-05-30 | 2013-12-06 | Ciat Sa | CONDENSATE CONTAINER AND AIR TREATMENT APPARATUS PROVIDED WITH SUCH A TRAY |
EP2672191A1 (en) | 2012-05-30 | 2013-12-11 | Compagnie Industrielle D'Applications Thermiques | Condensate tray and air-treatment device provided with such a tray |
CN106196340A (en) * | 2014-12-17 | 2016-12-07 | Lg电子株式会社 | The off-premises station of air conditioner |
US10443902B2 (en) | 2014-12-17 | 2019-10-15 | Lg Electronics Inc. | Outdoor device for an air conditioner |
CN106196340B (en) * | 2014-12-17 | 2019-12-13 | Lg电子株式会社 | Outdoor unit of air conditioner |
CN107949749A (en) * | 2015-09-10 | 2018-04-20 | 日立江森自控空调有限公司 | refrigerating air conditioning device |
CN107949749B (en) * | 2015-09-10 | 2020-12-15 | 日立江森自控空调有限公司 | Refrigerating air conditioner |
EP3705793A1 (en) | 2019-03-08 | 2020-09-09 | Daikin Industries, Ltd. | Heat source unit for a heat pump |
EP4060256A4 (en) * | 2019-11-14 | 2022-12-21 | Daikin Industries, Ltd. | Air conditioner |
Also Published As
Publication number | Publication date |
---|---|
EP2159497A8 (en) | 2010-04-28 |
JP2010054063A (en) | 2010-03-11 |
EP2159497B1 (en) | 2016-11-09 |
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