GB2604554A - Twin pump - Google Patents

Twin pump Download PDF

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Publication number
GB2604554A
GB2604554A GB2208749.8A GB202208749A GB2604554A GB 2604554 A GB2604554 A GB 2604554A GB 202208749 A GB202208749 A GB 202208749A GB 2604554 A GB2604554 A GB 2604554A
Authority
GB
United Kingdom
Prior art keywords
pump
rotor
fluid
twin
pumped
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
GB2208749.8A
Other versions
GB2604554B (en
GB202208749D0 (en
Inventor
o'donnell J
McKay S
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.)
Motion Control Products Ltd
Original Assignee
Motion Control Products 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 Motion Control Products Ltd filed Critical Motion Control Products Ltd
Priority to GB2315264.8A priority Critical patent/GB2620694A/en
Publication of GB202208749D0 publication Critical patent/GB202208749D0/en
Publication of GB2604554A publication Critical patent/GB2604554A/en
Application granted granted Critical
Publication of GB2604554B publication Critical patent/GB2604554B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/12—Combinations of two or more pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/12—Combinations of two or more pumps
    • F04D13/14—Combinations of two or more pumps the pumps being all of centrifugal type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
    • F04D15/0016—Control, e.g. regulation, of pumps, pumping installations or systems by using valves mixing-reversing- or deviation valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine
    • 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Described is a twin ended pump apparatus comprising: a housing; a first pump at one end of the housing, said first pump comprising an impeller driven by a rotor of an electric motor, said impeller causing a fluid to flow out of a pump chamber, said electric motor including a stator for driving said rotor, wherein said rotor is arranged on a pump chamber side of a fluid-sealed boundary separating said pump chamber from the stator; and a second pump at an opposing end of the housing.

Claims (29)

Claims.
1. A twin ended pump apparatus comprising: a housing; a first pump at one end of the housing, said first pump comprising an impeller driven by a rotor of an electric motor, said impeller causing a fluid to flow out of a pump chamber, said electric motor including a stator for driving said rotor, wherein said rotor is arranged on a pump chamber side of a fluid-sealed boundary separating said pump chamber from the stator; and a second pump at an opposing end of the housing.
2. The twin ended pump apparatus of claim 1, wherein the second pump comprises at the opposing end of the housing an impeller driven by a rotor of an electric motor, said impeller causing a fluid to flow out of a pump chamber, said electric motor including a stator for driving said rotor, wherein said rotor is arranged on a pump chamber side of a fluid-sealed boundary separating said pump chamber from the stator.
3. The twin ended pump apparatus of claim 1, wherein the electric motor of the first pump does not have a motor shaft extending through said fluid- sealed boundary separating said pump chamber from the stator.
4. The twin ended pump apparatus of claim 1, wherein the fluid-sealed boundary separating said pump chamber from the stator of said first pump is defined by a pump chamber inner end plate, the pump chamber inner end plate being substantially cup-shaped about a rotational axis of the rotor.
5. The twin ended pump apparatus of claim 4, wherein a cup part of the pump chamber inner end plate extends into the housing by an amount sufficient to mount the motor stator around an exterior cylindrical face of said cup part.
6. The twin ended pump apparatus of claim 4 or claim 5, wherein said rotor is accommodated within an interior volume of a cup part of the pump chamber inner end plate such that the rotor is positioned concentrically with the stator for rotation within the cup part when driven by the stator.
7. The twin ended pump apparatus of claim 6, wherein said cup part has a shaft or spigot extending from an internal end face, said rotor being mounted to said shaft or spigot for rotation about an axis of the shaft or spigot.
8. The twin ended pump apparatus of claim 7, wherein said rotor is keyed to said shaft to cause said shaft to rotate with the rotor, said shaft being rotatably mounted to the internal end face of the cup part.
9. The twin ended pump apparatus of any one of the preceding claims, wherein at least the rotor is enveloped in a material which is not reactive, non-contaminating and/or non polluting of the fluid to be pumped.
10. The twin ended pump apparatus of any one of the preceding claims, wherein the fluid to be pumped is potable water and the rotor is enveloped in a material which meets a regulatory standard and/or a quality standard for contact with potable water.
11. The twin ended pump apparatus of any one of the preceding claims, wherein the stator and rotor comprise a brushless direct current (BLDC) motor unit.
12. The twin ended pump apparatus of any one of the preceding claims, wherein each pump is controlled independently of the other pump.
13. The twin ended pump apparatus of any one of the preceding claims, wherein the operation of each pump can be controlled to achieve a first set pressure fluid output when the pumped fluid output of the first pump is mixed with the pumped fluid output of the second pump.
14. The twin ended pump apparatus of claim 13, wherein the first pump is arranged to pump heated fluid and the second pump is arranged to pump unheated fluid and wherein the operation of each pump can be controlled to achieve a first set pressure fluid output at a first set temperature when the pumped heated fluid output of the first pump is mixed with the pumped unheated fluid output of the second pump.
15. The twin ended pump apparatus of claim 13 or claim 14, wherein the operating speed of each pump can be changed in tandem to reach a second set pressure fluid output when the pumped fluid output of the first pump is mixed with the pumped fluid output of the second pump.
16. The twin ended pump apparatus of claim 15, wherein the operating speed of each pump can be changed in tandem to reach a second set pressure fluid output at said first set temperature when the pumped heated fluid output of the first pump is mixed with the pumped unheated fluid output of the second pump.
17. The twin ended pump apparatus of claim 15, wherein the operating speed of each pump can be changed differentially to reach a second set temperature when the pumped heated fluid output of the first pump is mixed with the pumped unheated fluid output of the second pump.
18. The twin ended pump apparatus of claim 15, wherein the operating speed of each pump can be changed differentially to reach a second set temperature at a set pressure fluid output when the pumped heated fluid output of the first pump is mixed with the pumped unheated fluid output of the second pump.
19. The twin ended pump apparatus of any one of the preceding claims, wherein the twin ended pump does not require a fluid by-pass connection between the pump chamber of the first pump and the pump chamber of the second pump.
20. The twin ended pump apparatus of any one of the preceding claims, wherein the end face of the cup part of the pump chamber inner end plate of the first pump has means for attaching to an end face of a cup part of a pump chamber inner end plate of the second pump.
21. The twin ended pump apparatus of any one of the preceding claims, wherein the first pump has a first drive controller and the second pump has a second drive controller.
22. The twin ended pump apparatus of any one of the preceding claims having means for connecting said first pump to said second pump.
23. The twin ended pump apparatus of claim 22, wherein the connecting means of the first pump are complimentary to the connecting means of the second pump.
24. The twin ended pump apparatus of claim 21 or claim 23, wherein said first pump and said second pump are connected with their axes of rotation in alignment or in parallel.
25. The twin ended pump apparatus of claim 22 or claim 23, wherein the connecting means of the first pump are provided at one end of the first pump and the connecting means of the second pump are provided at an opposing end of the second pump such that, when said first pump and said second pump are connected, they are connected with their axes of rotation in alignment.
26. A method of assembling a twin ended pump apparatus, the method comprising: connecting a first pump to a second pump within a housing such that at least the first pump has an impeller driven by a rotor of an electric motor, said impeller causing a fluid to flow out of a pump chamber, said electric motor including a stator for driving said rotor, wherein said rotor is arranged on a pump chamber side of a fluid-sealed boundary separating said pump chamber from the stator.
27. A method of operating a twin ended pump apparatus according to any one of claims 1 to 25, comprising the steps of: mixing a pumped heated fluid flow from the first pump with a pumped cold fluid flow from the second pump; independently controlling operation of the first pump and the second pump to control at least one of a set pressure and/or a set temperature of a resulting mixed fluid flow.
28. The method of claim 27 including differentially controlling the first and second pumps to obtain at least one of a set pressure and/or a set temperature of a resulting mixed fluid flow.
29. A twin ended pump apparatus comprising: a first pump having a first housing and comprising an impeller driven by a rotor of an electric motor, said impeller causing a fluid to flow out of a pump chamber, said electric motor including a stator for driving said rotor, wherein said rotor is arranged on a pump chamber side of a fluid- sealed boundary separating said pump chamber from the stator; and a second pump having a second housing; wherein the first housing of the first pump is connected to the second housing of the second pump and the first and second pumps are controlled to operate by a single controller.
GB2208749.8A 2019-12-19 2020-12-18 An improved pump Active GB2604554B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2315264.8A GB2620694A (en) 2019-12-19 2020-12-18 An apparatus for mixing hot and cold fluid flows

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HK22019000041 2019-12-19
PCT/EP2020/087008 WO2021123155A2 (en) 2019-12-19 2020-12-18 An improved pump

Publications (3)

Publication Number Publication Date
GB202208749D0 GB202208749D0 (en) 2022-07-27
GB2604554A true GB2604554A (en) 2022-09-07
GB2604554B GB2604554B (en) 2023-12-27

Family

ID=74175763

Family Applications (2)

Application Number Title Priority Date Filing Date
GB2208749.8A Active GB2604554B (en) 2019-12-19 2020-12-18 An improved pump
GB2315264.8A Pending GB2620694A (en) 2019-12-19 2020-12-18 An apparatus for mixing hot and cold fluid flows

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB2315264.8A Pending GB2620694A (en) 2019-12-19 2020-12-18 An apparatus for mixing hot and cold fluid flows

Country Status (2)

Country Link
GB (2) GB2604554B (en)
WO (1) WO2021123155A2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59200092A (en) * 1983-04-27 1984-11-13 Sharp Corp Pump
JP2012052506A (en) * 2010-09-03 2012-03-15 Jtekt Corp Electric pump
WO2014147588A1 (en) * 2013-03-20 2014-09-25 Magna International Inc. Tandem electric pump
EP3438555A1 (en) * 2017-08-03 2019-02-06 Grundfos Holding A/S Circulation pump generator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2447860B (en) * 2006-11-21 2011-08-03 Salamander Pumped Shower Systems Ltd Improvements in fluid pumping systems
GB2465392B (en) 2008-11-17 2014-07-09 Salamander Pumped Shower Systems Ltd Improvements in pumping apparatus
GB2517719B (en) 2013-08-29 2016-07-06 Salamander Pumped Shower Systems Ltd Improvements in pumping apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59200092A (en) * 1983-04-27 1984-11-13 Sharp Corp Pump
JP2012052506A (en) * 2010-09-03 2012-03-15 Jtekt Corp Electric pump
WO2014147588A1 (en) * 2013-03-20 2014-09-25 Magna International Inc. Tandem electric pump
EP3438555A1 (en) * 2017-08-03 2019-02-06 Grundfos Holding A/S Circulation pump generator

Also Published As

Publication number Publication date
GB2604554B (en) 2023-12-27
GB2620694A (en) 2024-01-17
WO2021123155A2 (en) 2021-06-24
WO2021123155A3 (en) 2021-08-05
GB202208749D0 (en) 2022-07-27

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COOA Change in applicant's name or ownership of the application

Owner name: MOTION CONTROL PRODUCTS LIMITED

Free format text: FORMER OWNER: RIFT IP LIMITED