EP1318361B1 - Améliorations relatives aux pompes - Google Patents

Améliorations relatives aux pompes Download PDF

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Publication number
EP1318361B1
EP1318361B1 EP02258380A EP02258380A EP1318361B1 EP 1318361 B1 EP1318361 B1 EP 1318361B1 EP 02258380 A EP02258380 A EP 02258380A EP 02258380 A EP02258380 A EP 02258380A EP 1318361 B1 EP1318361 B1 EP 1318361B1
Authority
EP
European Patent Office
Prior art keywords
pump
elbow
reservoir
fluid
level
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.)
Expired - Lifetime
Application number
EP02258380A
Other languages
German (de)
English (en)
Other versions
EP1318361A1 (fr
Inventor
Bernard Leach
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.)
Aspen Pumps Ltd
Original Assignee
Aspen Pumps 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26246834&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1318361(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from GBGB0129096.4A external-priority patent/GB0129096D0/en
Application filed by Aspen Pumps Ltd filed Critical Aspen Pumps Ltd
Priority to EP04106143A priority Critical patent/EP1510765B1/fr
Publication of EP1318361A1 publication Critical patent/EP1318361A1/fr
Application granted granted Critical
Publication of EP1318361B1 publication Critical patent/EP1318361B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20—Casings or covers
    • 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
    • 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

Definitions

  • the present invention relates to improvements in or relating to pumps, in particular to pumps in air conditioning installations.
  • JP 02 176327 describes a method of condensate disposal in which condensate generated in a cooling coil drips and flows from a drain pan through a connecting pipe into a reservoir tank.
  • the water level therein is monitored by sensors and upon reaching a predetermined level a pump is actuated to discharge the water, the pump stopping when the water level reaches a predetermined lower level.
  • the pump assembly includes a float switch arrangement and adapted to cause actuation of the pump when a level of fluid within the reservoir exceeds a first predetermined level. More preferably, the float switch is adapted to cause actuation of an alarm when the level of fluid within the reservoir exceeds a second predetermined level, said second predetermined level being greater than the first predetermined level.
  • the float switch arrangement comprises a sensor housing projecting into the reservoir, housing at least one sensor, suitably of the Hall effect semiconductor type, at a position defining said first predetermined level and a magnetic float free to move axially about the sensor housing.
  • the at least one channel is formed by provision of a dividing wall.
  • the elbow comprises a housing 11 having a first opening 12 and a second opening 13 defined between a base element 14 and a cover 15.
  • a pump assembly 20 having an inlet 21 and an outlet 22 orientated at 90° to the inlet 21.
  • Pump assembly 20 incorporates an electrically operated pump and is supplied by means of an electrical power supply 23.
  • the pump 20 also includes an alarm switch (not shown) which, by means of a cable 24, actuates an alarm and may be also switch off the air-conditioning unit in the event of pump failure.
  • elbow 10 is used in combination with additional conventional elongate conduit channel 30 and cover 31 elements connected at each opening 12,13.
  • the elbow is designed with a rectangular section to match the rectangular section of the conduit with which the elbow is being used. It will be appreciated that many designs of conduit with widely varying dimensions are available. The design of the elbow housing 11 will be adapted accordingly to match.
  • Figure 2 illustrates the elbow 10 of Figure 1 in a typical installation in which the inlet 21 of the pump assembly 20 is in operative connection with the tray 32 of an evaporator unit 33.
  • the elbow housing 11 further includes a channel to allow for the routing of additional cables, breather tubes and additional pipework 34.
  • channel 40 is formed by provision of a dividing wall 41 projecting from the rear wall of the base element 14, dividing a channel 40 from an area of the base element housing the pump assembly 20.
  • Pump assembly 20 includes a pump in a pump housing 51 and having a pump inlet 52 and a pump outlet 53.
  • Pump inlet 52 is in fluid communication with a reservoir 54 formed integrally with the pump assembly 20.
  • the reservoir has an inlet forming the pump assembly inlet 21.
  • the pump assembly 20 includes a float switch arrangement to cause actuation of the pump when the level of fluid within the reservoir reaches a certain level.
  • the float switch is adapted to trigger and alarm and/or prevent continued operation of the air conditioning system if the fluid level reaches a second, higher level, which may, for example, indicate a blockage in the system.
  • a typical float switch arrangement is illustrated in which a housing in the form of a sealed finger 55 depends from pump housing 51 into reservoir 54.
  • Mounted within finger 55 are three axially spaced sensors (not shown) each responsive to a magnetic field induced by a magnetic float 56 around finger 55 and constrained to move axially with respect thereto.
  • magnetic float 56 includes a disc-shaped magnet supported upon an foamed plastics float material, such as expanded polystyrene.
  • the sensors are of the Hall-effect semi-conductor type.
  • the lowermost sensor acts, as the fluid level in the reservoir falls, to turn off the pump.
  • the intermediate sensor acts, as the fluid level begins to rise, to actuate the pump.
  • the uppermost sensor acts when the fluid level reaches a height indicating that the capacity of the pump is being reached, perhaps indicating a blockage in the air-conditioning pipework. Typically, this sensor will trigger actuation of an alarm
  • the pump is capable of pumping about 14 litres of water per hour at zero head.
  • the pump assembly and conduit elbow of the present invention offer a number of advantages over existing arrangements.
  • the conduit enables the pump assembly to be mounted such that the reservoir is horizontal in both left handed and right handed orientations.
  • a typical problem with existing arrangements arises when the pump is not active. Condensate in the pipework and the conventional reservoir in the evaporator, which tends to be some distance from the pump, tends to siphon through the pump, which is usually at an elevated position, to the drain. This leads to difficulties priming the pump upon restarting and even if pumping can be restarted, it is associated with considerable noise as a large amount of air is drawn through the pump.
  • the pump assembly by inclusion of an integral reservoir enables sufficient condensate to remain in the reservoir such that the pump inlet 52 remains covered, thereby avoiding difficulties and noise associated with priming of the pump. Additionally, a non-return valve can be incorporated between the pump inlet and pump outlet to prevent siphoning. Furthermore, the compact nature of the design of the pump assembly means that it can easily be accommodated within the elbow of air-conditioning conduit, whilst leaving sufficient room for other cabling and pipework.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
  • Compressor (AREA)
  • Air Conditioning Control Device (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Saccharide Compounds (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Claims (7)

  1. Coude (10) pour appareil de climatisation, le coude (10) présentant une première ouverture (12) et une seconde ouverture (13) et logeant intégralement en son sein un ensemble de pompe (20) ; dans lequel l'ensemble de pompe (20) comprend une pompe ayant une amenée de pompe (21) et un orifice de refoulement de pompe (22), et dans lequel l'amenée de pompe (21) est en communication fluidique avec un réservoir (54), ledit réservoir (54) étant formé d'un seul tenant avec l'ensemble de pompe (20) et ledit réservoir (54) ayant une entrée de réservoir en communication fluidique avec un premier tuyau d'acheminement de fluide d'une installation de climatisation ; dans lequel l'orifice de refoulement de pompe est en communication fluidique avec un second tuyau d'acheminement de fluide d'une installation de climatisation ; et dans lequel le coude comprend en outre au moins un canal (40) pour la réception, à l'usage, de câbles et/ou de tuyauterie supplémentaire (34).
  2. Coude (10) selon la revendication 1, dans lequel le au moins un canal (40) est formé par apport d'une paroi de séparation (41).
  3. Coude (10) selon la revendication 1 ou 2, dans lequel l'ensemble de pompe (20) comprend un agencement d'interrupteur à flotteur (55, 56) adapté pour provoquer l'actionnement de la pompe lorsqu'un niveau de fluide à l'intérieur du réservoir dépasse un premier niveau prédéterminé.
  4. Coude (10) selon la revendication 3, dans lequel l'interrupteur à flotteur (55, 56) est adapté pour provoquer l'actionnement d'un avertisseur lorsque le niveau de fluide à l'intérieur du réservoir dépasse un deuxième niveau prédéterminé, ledit deuxième niveau prédéterminé étant supérieur au premier niveau prédéterminé.
  5. Coude (10) selon la revendication 3 ou 4, dans lequel l'interrupteur à flotteur (55, 56) est adapté pour arrêter le fonctionnement de la pompe lorsque le niveau de fluide à l'intérieur du réservoir tombe à un troisième niveau prédéterminé.
  6. Coude (10) selon l'une quelconque des revendications 3 à 5, dans lequel l'agencement d'interrupteur à flotteur comprend un logement de détecteur (55) faisant saillie dans le réservoir (54) logeant au moins un détecteur, de préférence du type semi-conducteur à effet Hall, à une position définissant chacun desdits niveaux prédéterminés, et un flotteur magnétique (56) limité à un mouvement axial autour du logement du détecteur.
  7. Coude (10) selon l'une quelconque des revendications précédentes, comprenant en outre un clapet de non-retour entre l'amenée de la pompe et l'orifice de refoulement de la pompe.
EP02258380A 2001-12-04 2002-12-04 Améliorations relatives aux pompes Expired - Lifetime EP1318361B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04106143A EP1510765B1 (fr) 2001-12-04 2002-12-04 Améliorations relatives aux pompes

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GBGB0129096.4A GB0129096D0 (en) 2001-12-04 2001-12-04 Improvements in or relating to pumps
GB0129096 2001-12-04
GB0217378A GB2382843B (en) 2001-12-04 2002-07-26 Improvements in or relating to pumps
GB0217378 2002-07-26

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP04106143A Division EP1510765B1 (fr) 2001-12-04 2002-12-04 Améliorations relatives aux pompes
EP04106143.3 Division-Into 2004-11-29

Publications (2)

Publication Number Publication Date
EP1318361A1 EP1318361A1 (fr) 2003-06-11
EP1318361B1 true EP1318361B1 (fr) 2005-11-02

Family

ID=26246834

Family Applications (2)

Application Number Title Priority Date Filing Date
EP02258380A Expired - Lifetime EP1318361B1 (fr) 2001-12-04 2002-12-04 Améliorations relatives aux pompes
EP04106143A Expired - Lifetime EP1510765B1 (fr) 2001-12-04 2002-12-04 Améliorations relatives aux pompes

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP04106143A Expired - Lifetime EP1510765B1 (fr) 2001-12-04 2002-12-04 Améliorations relatives aux pompes

Country Status (7)

Country Link
EP (2) EP1318361B1 (fr)
AT (2) ATE308725T1 (fr)
CY (1) CY1105323T1 (fr)
DE (1) DE60207033T2 (fr)
DK (2) DK1318361T3 (fr)
ES (2) ES2299799T3 (fr)
SI (1) SI1318361T1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0801063D0 (en) * 2008-01-21 2008-02-27 Charles Austen Pumps Ltd Conduit for a condensate removal pump
US8683821B2 (en) 2010-04-15 2014-04-01 Franklin Electric Company, Inc. Sediment trap system and method
CA2806039C (fr) 2010-07-21 2018-05-29 Itt Manufacturing Enterprises Llc Pompe concue pour convertir une installation
WO2020138706A1 (fr) * 2018-12-24 2020-07-02 성신하스코 주식회사 Conduit ayant un contenant d'eau de pompe de vidange exposée
KR102046060B1 (ko) * 2018-12-24 2019-11-19 성신하스코 주식회사 배수펌프의 물통이 노출된 덕트
KR102091877B1 (ko) * 2019-09-09 2020-03-20 성신하스코 주식회사 배수펌프의 물통이 노출된 덕트
KR102046066B1 (ko) * 2019-01-30 2019-11-19 성신하스코 주식회사 배수펌프의 물통이 부분적으로 노출된 덕트

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2610673B2 (ja) * 1988-12-27 1997-05-14 大成建設株式会社 空調機の凝縮水の処理方法
JP3231574B2 (ja) 1994-11-21 2001-11-26 株式会社ニコン 空調機のドレン水の排水装置
JPH09112959A (ja) * 1995-10-20 1997-05-02 Tochigi Nikon:Kk 天吊り型空調機
JP3532718B2 (ja) * 1995-11-20 2004-05-31 未来工業株式会社 エアコン用冷媒管保護カバー
JPH10288384A (ja) * 1997-04-15 1998-10-27 Nikon Corp 空調機のドレン水排水装置及びドレン水排水装置を備えた空調システム
JPH11182420A (ja) * 1997-12-15 1999-07-06 You Can Kk 自動排液装置
JP3543063B2 (ja) * 1999-03-11 2004-07-14 未来工業株式会社 冷媒管およびドレン管の、保護カバー並びに仕切部材

Also Published As

Publication number Publication date
ES2299799T3 (es) 2008-06-01
CY1105323T1 (el) 2010-03-03
SI1318361T1 (sl) 2006-06-30
EP1510765B1 (fr) 2008-02-20
EP1318361A1 (fr) 2003-06-11
DK1318361T3 (da) 2006-03-20
ES2252399T3 (es) 2006-05-16
EP1510765A3 (fr) 2005-08-31
ATE386911T1 (de) 2008-03-15
DE60207033D1 (de) 2005-12-08
DK1510765T3 (da) 2008-06-02
ATE308725T1 (de) 2005-11-15
DE60207033T2 (de) 2006-08-03
EP1510765A2 (fr) 2005-03-02

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