WO2008053937A1 - Dispositif de drainage - Google Patents

Dispositif de drainage Download PDF

Info

Publication number
WO2008053937A1
WO2008053937A1 PCT/JP2007/071257 JP2007071257W WO2008053937A1 WO 2008053937 A1 WO2008053937 A1 WO 2008053937A1 JP 2007071257 W JP2007071257 W JP 2007071257W WO 2008053937 A1 WO2008053937 A1 WO 2008053937A1
Authority
WO
WIPO (PCT)
Prior art keywords
drain
water
pump
drain water
rotating member
Prior art date
Application number
PCT/JP2007/071257
Other languages
English (en)
Japanese (ja)
Inventor
Haruo Nakata
Teruo Kido
Sachiko Yamaguchi
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 WO2008053937A1 publication Critical patent/WO2008053937A1/fr

Links

Classifications

    • 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
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2261—Rotors specially for centrifugal pumps with special measures
    • F04D29/2277—Rotors specially for centrifugal pumps with special measures for increasing NPSH or dealing with liquids near boiling-point
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2261—Rotors specially for centrifugal pumps with special measures
    • F04D29/2288—Rotors specially for centrifugal pumps with special measures for comminuting, mixing or separating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
    • F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous
    • F04D7/045—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous with means for comminuting, mixing stirring or otherwise treating
    • 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
    • F24F2013/227—Condensate pipe for drainage of condensate from the evaporator

Definitions

  • the present invention relates to a drain-up device for an air conditioner having a slime suppressing function for suppressing generation or growth of slime.
  • indoor air is cooled by an evaporator to condense water in the indoor air.
  • the condensed moisture adheres to the fins of the heat exchanger and is collected in the drain pan by dripping into the drain pan placed below the evaporator.
  • the drain water collected in the drain pan is forcibly discharged to the outside using a drain pump, for example, in the case of a ceiling-embedded air conditioner.
  • Patent Document 1 discloses a technique for recirculating drain water discharged by a drain pump to a portion upstream of a drain pan! As the drain water recirculated to the upstream side of the drain pan flows from the upstream side to the downstream side in the drain pan, the dust adhering to the drain pan is washed away. As a result, mold odor caused by accumulated dust and generation of slime are suppressed.
  • slime is more likely to occur in the portion where drain water is retained. Specifically, slime is likely to occur in the drainage part below the drain pump that is deeper than the other part of the drain pan, or in the part of the drain pump that is immersed in the drain water. In particular, if slime is generated in the vicinity of the drain water inlet of the drain pump, there is a risk that the drain pump may be prevented from sucking the drain water.
  • Patent Document 1 has a problem to cope with such slime that does not effectively suppress the growth or generation of slime around the drain pump. Left behind.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 11 351604 (especially, pages 3 and 4 of the specification and FIGS. 1 and 2)
  • an object of the present invention is to provide a drain up device that can effectively suppress generation or growth of slime around a drain pump.
  • an air conditioner equipped with a drain pan for storing drain water and a drain pump for sucking and discharging the drain water accumulated in the drain pan.
  • a drain up device is provided.
  • the drain pump has a blade member for sucking drain water.
  • a rotating member that rotates to stir the drain water in the drain pan is provided on the extension line of the rotating shaft of the blade member.
  • the rotating member has an outer diameter that is smaller than the inner diameter of the drain water suction port of the drain pump.
  • the rotating member may be configured by a portion of a blade member protruding downward from the drain water suction port.
  • the outer diameter of the rotating member is preferably smaller than the outer diameter of the blade member.
  • FIG. 1 is a top view showing a configuration of an air conditioner to which a drain up device according to an embodiment of the present invention is applied.
  • FIG. 2 is a longitudinal sectional view of the drain up device of FIG.
  • FIG. 3 is a cross-sectional view of the drain up device along the line AA in FIG.
  • FIG. 4 is a longitudinal sectional view of a drain up device according to another embodiment of the present invention.
  • FIG. 5 is a longitudinal sectional view of a drain up device according to another embodiment of the present invention.
  • FIG. 6 is a longitudinal sectional view of the drain up device according to the preferred embodiment of the present invention.
  • the drain-up device according to the present embodiment is used by being particularly applied to an air conditioner.
  • the main body 11 of the air conditioner is placed in the opening formed in the ceiling of the air conditioning room.
  • a casing 13 that is inserted and inserted and a decorative panel (not shown) that is disposed below the casing 13 are provided.
  • the casing 13 accommodates a substantially square annular heat exchanger 14 and a blower 15 disposed at the inner center of the heat exchanger 14.
  • the blower 15 includes a downward suction port and an air outlet facing the side surface of the heat exchanger 14.
  • a drain pan 18 having a drain receiving groove for receiving drain water generated in the heat exchanger 14 is disposed below the heat exchanger 14.
  • the drain pan 18 has a substantially square annular planar shape so as to correspond to the entire area of the bottom surface of the heat exchanger 14.
  • a pump chamber 22 is formed in a portion of the drain receiving groove of the drain pan 18 where the heat exchanger 14 is not disposed, that is, between the blowout air passages 20 formed in the casing 13.
  • a drain pump 30 is disposed in the pump chamber 22.
  • the drain pump 30 includes a pump casing 31 and an impeller 32 that is in the pump casing 31 and is driven to rotate by a motor 35.
  • the pump casing 31 has a drain water inlet 33 located below and a drain water outlet 34 located on the side.
  • the motor 35 is attached to the casing 13 of the air conditioner main body 11 by a motor attachment 39 attached to the side surface of the motor 35.
  • the pump casing 31 includes a lower casing 31a that surrounds the impeller 32, and an upper casing 31b that closes the upper opening of the lower casing 31a.
  • a seal member 31c is mounted between the lower casing 31a and the upper casing 31b.
  • the rotating shaft 36 of the impeller 32 is connected to the motor 35 through a circular hole 37 provided in the center of the lower casing 31a.
  • the drain water suction port 33 is formed at a position corresponding to the center of the lower casing 31a, more specifically, the rotation center of the impeller 32.
  • the drain water discharge port 34 has a trumpet shape and extends from the side surface of the lower casing 31a to the side.
  • the impeller 32 mainly includes a rotary shaft 36 connected to the drive shaft of the motor 35, a main blade 32a for draining water, and an auxiliary blade 32b for sucking up drain water.
  • the main blade 32a is disposed in the lower casing 31a, and the auxiliary blade 32b is disposed below the main blade 32a.
  • the impeller 32 is further provided with a disc-shaped tray portion 32c that is disposed between the main blade 32a and the auxiliary blade 32b and has an opening formed of an annular through hole in the center. It is arranged coaxially with the rotary shaft 36.
  • the lower end portion of the lower portion protrudes downward by a predetermined length from the drain water suction port 33 located at the lower end of the lower casing 31a.
  • the protruding portion of the auxiliary blade 32b constitutes a rotating member 32b as a stirring means for stirring the drain water DW in the vicinity of the drain water suction port 33.
  • the rotating member 32b is provided on the extension line of the rotating shaft of the auxiliary blade 32b.
  • the rotating member 32b is larger than the inner diameter of the drain water inlet 33.
  • a water retaining portion 18a is formed in a portion of the drain pan 18 located below the drain pump 30.
  • the drain receiving groove of the drain pan 18 is inclined toward the water retaining portion 18a. Therefore, the drain water in the drain receiving groove flows toward the water retaining portion 18a and is stored in the water retaining portion 18a.
  • the drain pump 30 is immersed in the rotating member 32b force S drain water DW formed by the auxiliary blade 32b and the lower end of the auxiliary blade 32b.
  • the drain water DW in the drain pan 18 near the drain water suction port 33 is agitated, and a flow is generated in the drain water DW. Also, the drain water DW collected in the water retaining portion 18a is sucked up from the drain water suction port 33 by the auxiliary blade 32b and is discharged to the main blade 32a.
  • the portion of the drain pan 18 around the drain pump 30 is a place where the drain water stays and slime is likely to be generated as described above.
  • generation or growth of slime in that portion is suppressed.
  • the generation of slime occurs when bacteria attached to the solid surface grow using a nutrient source that has been adsorbed and concentrated on the solid surface, and at the same time produce a polysaccharide substance to retain moisture.
  • only a part of the slime made of polysaccharides produced by bacteria adheres to the solid surface, and the remaining part floats.
  • the fully grown slime that is loosely bonded to the solid surface in particular is easily separated from the solid surface by physically stirring the drain water as described above.
  • the slime that is separated from the solid surface and floats in the drain water is sucked together with the drain water by the drain pump 30 and discharged to the outside.
  • the drain water DW around the drain pump 30 that discharges the drain water accumulated in the drain pan 18 is agitated by the rotation of the rotating member 32b as the drain water agitating means, and thereby the flow to the drain water DW.
  • the portion of the drain pan 18 around the drain pump 30 is a place where drain water DW accumulates and is likely to generate slime.Thus, by generating a flow in the drain water DW of this portion, generation of slime in that portion Or growth is effectively suppressed. Accordingly, it is possible to prevent the slime from becoming sludge at the bottom of the drain pan 18.
  • the rotating member 32b drives the impeller 32 of the drain pump 30.
  • the rotary shaft 36 of the motor 35 is connected to be coaxial with the rotary shaft 36.
  • the drain water DW at the bottom of the drain pan 18a is agitated. Therefore, rotate the auxiliary blade 32b of the impeller 32 and drain water DW by the drain pump 30.
  • the drain water DW is agitated by the rotation of the rotating member 32b. Therefore, the slime separated from the solid surface by stirring the drain water DW is sucked by the drain pump 30 together with the drain water before being attached to the solid surface again, and discharged and removed to the outside. Further, since the rotating member 32b and the impeller 32 share the motor 35, the drain up device has a simple and low-cost structure.
  • the rotating member 32b is constituted by the portion of the auxiliary blade 32b protruding downward from the drain water suction port 33 of the drain pump 30 by a predetermined length. If the outer diameter of the rotating member 32b is larger than the inner diameter of the drain water inlet 33, the drain water inlet 33 Ambient drain water DW water level L force For example, the water level is greatly reduced to the water level L2 in Fig. 2, and as a result, the drain pump 30 may not be able to perform its sufficient pumping function. In this case, in order to ensure the pumping function of the drain pump 30, it is necessary to increase the total drain water in the drain pan 18 by increasing the amount of drain water retained in the drain pan 18. This, on the contrary, creates an environment in which slime is likely to occur. In this respect, in the present embodiment, since the outer diameter of the rotating member 32b is smaller than the inner diameter of the drain water suction port 33, the drain pump
  • the lower end of the auxiliary blade 32b is attached to the other auxiliary blade 32b.
  • Auxiliary vanes 32b of the drain pump 30 are formed so that the outer diameter is larger than the outer diameter of the 1 part.
  • the outer diameter of the rotating member 32b is smaller than the outer diameter of the auxiliary blade 32b.
  • the outer diameter of the lower end portion of the auxiliary blade 32b is lower than the lower end of the auxiliary blade 32b.
  • the auxiliary vane 32b of the drain pump 30 may be formed so as to gradually decrease toward 1
  • the outer diameter of the rotating member 32b is gradually reduced toward the lower end of the rotating member 32b.
  • the power S can reduce the pumping function of the drain pump 30 more effectively.
  • the auxiliary blade 32b of the drain pump 30 may be formed in a spiral shape.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

la présente invention concerne un dispositif de drainage qui comprend un bac de récupération (18) pour stocker de l'eau de drainage (DW), et une pompe de vidange (30) pour aspirer et évacuer l'eau de drainage (DW) stockée dans le bac de récupération (18). La pompe de vidange (30) possède un élément de rotor (32b1) pour aspirer l'eau de drainage (DW). Sur le prolongement de l'arbre rotatif de l'élément de roue (32b1) est prévu un élément rotatif (32b2) qui brasser l'eau de drainage (DW) dans le bac de récupération (18). L'élément rotatif (32b2) possède un diamètre extérieur inférieur au diamètre intérieur d'un orifice d'aspiration d'eau de drainage (33) de la pompe de vidange (30). Avec un tel dispositif de drainage, la formation et le développement de boue autour de la pompe de vidange sont efficacement supprimés.
PCT/JP2007/071257 2006-11-02 2007-10-31 Dispositif de drainage WO2008053937A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006299391A JP2008116111A (ja) 2006-11-02 2006-11-02 ドレンアップ装置
JP2006-299391 2006-11-02

Publications (1)

Publication Number Publication Date
WO2008053937A1 true WO2008053937A1 (fr) 2008-05-08

Family

ID=39344278

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/071257 WO2008053937A1 (fr) 2006-11-02 2007-10-31 Dispositif de drainage

Country Status (2)

Country Link
JP (1) JP2008116111A (fr)
WO (1) WO2008053937A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103362824A (zh) * 2013-08-09 2013-10-23 山东省章丘鼓风机股份有限公司 一种带螺旋搅拌叶片的液下渣浆泵

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113551407B (zh) * 2021-08-02 2022-08-02 珠海格力电器股份有限公司 排水装置及具有其的空调器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63131891A (ja) * 1986-11-21 1988-06-03 Hitachi Ltd 空気調和機用ドレンアツプポンプ
JPS6451790U (fr) * 1987-09-25 1989-03-30
JPH0491395A (ja) * 1990-08-06 1992-03-24 Taisan Kogyo Kk 液体ポンプ
JPH0763188A (ja) * 1993-08-20 1995-03-07 Taisan Kogyo Kk 排水ポンプ
WO2006075607A1 (fr) * 2005-01-12 2006-07-20 Daikin Industries, Ltd. Climatiseur

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63131891A (ja) * 1986-11-21 1988-06-03 Hitachi Ltd 空気調和機用ドレンアツプポンプ
JPS6451790U (fr) * 1987-09-25 1989-03-30
JPH0491395A (ja) * 1990-08-06 1992-03-24 Taisan Kogyo Kk 液体ポンプ
JPH0763188A (ja) * 1993-08-20 1995-03-07 Taisan Kogyo Kk 排水ポンプ
WO2006075607A1 (fr) * 2005-01-12 2006-07-20 Daikin Industries, Ltd. Climatiseur

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103362824A (zh) * 2013-08-09 2013-10-23 山东省章丘鼓风机股份有限公司 一种带螺旋搅拌叶片的液下渣浆泵

Also Published As

Publication number Publication date
JP2008116111A (ja) 2008-05-22

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