GB2241741A - In-tank type electric pump - Google Patents

In-tank type electric pump Download PDF

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Publication number
GB2241741A
GB2241741A GB9102666A GB9102666A GB2241741A GB 2241741 A GB2241741 A GB 2241741A GB 9102666 A GB9102666 A GB 9102666A GB 9102666 A GB9102666 A GB 9102666A GB 2241741 A GB2241741 A GB 2241741A
Authority
GB
United Kingdom
Prior art keywords
pump
electric pump
type electric
vibration
tank type
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.)
Withdrawn
Application number
GB9102666A
Other versions
GB9102666D0 (en
Inventor
Iwai Shingo
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of GB9102666D0 publication Critical patent/GB9102666D0/en
Publication of GB2241741A publication Critical patent/GB2241741A/en
Withdrawn legal-status Critical Current

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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/08—Feeding by means of driven pumps 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
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • F04D13/086—Units comprising pumps and their driving means the pump being electrically driven for submerged use the pump and drive motor are both submerged
    • 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps

Abstract

An in-tank type electric pump to be submerged in a liquid in a tank is provided with a DC motor 1 for driving the electric pump, an impeller 9 fixed to a shaft of the motor, and a pump chamber containing the impeller. The chamber is formed by a pump casing 10 and a pump cover 11, at least one of which is made of a vibration-proof aluminium alloy, ie an alloy having an enhanced vibration dam ping capacity compared with other aluminium alloys. <IMAGE>

Description

A 1 i :2 2 -ti X -7 -el -1- A IN-T ^ TYPE ELECTRIC PUMP
Background of the Invention
The present invention relates to an in-tank type electric pump, more particularly, relates to a structure of the chamber of the electric pump used in a submerged state in a liquid fuel tank of a vehicle or the like.
Fig. 2 is a sectional view of a conventional in-tank type electric pump, for example shown in Japanese Patent Laidopen No.63-272994. in the drawing, the pump comprises a motor 1 of a driving source thereof, a rotor 2 of the motor 1, a commutator 3 disposed on the rotor 2, a brush 4 contacting with the commutator 3 and supplying an electric power to the rotor 2, a brush spring 5 pressing the brush 4 against the commutator 3, a noise canceler 6 reducing an electric noise, and a terminal 7 receiving an electric power f rom the outside and provided on a cover-out 8. The pump further comprises an impeller 9 fixed to an axis 2a of the rotor 2. The impeller 9 is included in a pump casing 10, which construct a pump chamber together with a pump cover 11. Furthermore, the pump comprises an inlet lla of the pump, a flow passage 10a in the pump chamber, a flow passage la in the motor and an outlet 8a of the PUMP.
The conventional in-type electric pump is constructed as described above. When the terminal 7 is supplied with an electric power, the rotor 2 is driven by receiving the power A through the noise canceler 6, the brush 4 and the commutator 3. Then, the impeller 9 fixed to the rotor 2 rotates in the pump chamber. The electric pump sucks the fuel from the inlet 11a as a result of the rotation of the impeller 9 in the pump chamber. The f uel is boosted by the rotating f orce of the impeller 9 during passing the passage 10a and is supplied to an engine or the like (not shown) from the outlet 8a after passing through the flow passage la in the motor.
In the aforesaid conventional in-tank type electric pump, since the impeller rotates with high speed in the fuel and the boosted fuel flows with high speed while colliding aganist the pump cover and the pump casing, there has been a problem in that the running noise of the electric pump is large.
Also, inlorder to reduce the running noise even in a minor gain, the shape of the pump cover becomes complicated and thick wall thereof must be increased.
Summary of The Invention
It is therefore an object of the present invention to provide an in-tank type electric pump in which the running noise is suppressed, the pump cover has a simple shape, and the pump has light weight and high quality.
According to the present invention, the pump casing and the pump cover are made of a vibration-proof aluminum alloy, and the pump cover is made simple in the shape and light in the weight.
1 1, ii 4 V 1 3 The pump casing and the pump cover suppress the running noise by the vibration-proof effect of the vibration-proof aluminum alloy, even if the impeller slides with high speed, or the fuel collides with the pump wall.
Fig. 1 is a sectional view showing an embodiment of the in-tank type electric pump according to the present invention; Fig. 2 is a sectional view showing the conventional in-tank type electric pump; and Fig. 3 is a graph comparing the attenuation capability of an alloy employed in the present invention with a conventional aluminum alloy.
Fig. 1 is a sectional view showing one embodiment of the present invention. In the drawing, the pump casing 10 and the pump cover 11 are made of a vibration-proof aluminum alloy. Other portions 1 - 9 are the same as those prior art pump.
The aforesaid vibration-proof aluminum alloy, for example 11FAINAROI W, (Trade Mark of Mitsubishi Kasei Corporation), is a material which has characteristics of a light weight, preferably workability and an internal friction more than five times as large as that of the regular aluminum alloy.
1 4 Fig. 3 shows the attenuation performance of I1FAINAROI D" in comparison with a conventional aluminum alloy used for in-tank electric pumps. This figure shows the attentuation capability of each alloy as a function of frequency. The attentuation capability is defined as Q = f2 fl fo Where fl and f2 are the frequencies at which the level is reduced by 3dB respectively below and above the resdnant frequency fO. The upper curve marked fd shows the attenuation produced by the vibration- proof aluminum I1FAINAROI D", whereas the lower curve marked C is the attenuation of a conventional aluminum alloy.
Various kinds of vibration-proof aluminum alloys are well known. The pump casing 10 and the pump cover 11 are made of such alloys by means of die casting or lost wax molding.
Since the in-tank type electric pump of the present invention has the same operation as the conventional in-tank type electric pump, the description of the operation is omitted.
According to the present invention, the pump casing and the pump cover are made of a vibration-proof aluminum alloy so that an in-tank electric pump is provided with characteri stics suppressing the running noise and reducing the producing cost thereof.
1.

Claims (4)

  1. What is claimed is: 1. An in-tank type electric pump submerged in a liquid
    in a tank, comprising; a DC motor for driving the electric pump, an impeller fixed to a shaft of the motor, and a pump chamber including the impeller, wherein at least one portion of the pump chamber is made of a vibration-proof aluminum alloy.
  2. 2. An in-tank type electric pump accorded to claim 1, wherein the pump chamber is constructed by a pump casing and a pump cover. in which at least one of the pump casing and the pump cover them is made of a vibration-proof aluminum alloy.
  3. 3. An in- tank type electric pump accorded to claim 1 or 2, wherein said vibration- proof alumi.num alloy has an internal friction more than five times as large as that of a regular aluminum alloy.
  4. 4. An in-tank electric pump substantially as herein described with reference to Figure 1 of the accompanying drawings.
    Published 1991 at The Patent Office. Concept House. Cardiff Road. Newport. Gwent NP9 I RH. Further copies rnay, be obtained from Sales Branch. Unit 6. Nine Mile Point. CAnfeliriftch. Cross Keys. Newport. NP1 7HZ. Printed by MulUplex techniques ltd. St Mary Cray. Kent.
GB9102666A 1990-02-07 1991-02-07 In-tank type electric pump Withdrawn GB2241741A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1185690U JPH03102089U (en) 1990-02-07 1990-02-07

Publications (2)

Publication Number Publication Date
GB9102666D0 GB9102666D0 (en) 1991-03-27
GB2241741A true GB2241741A (en) 1991-09-11

Family

ID=11789372

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9102666A Withdrawn GB2241741A (en) 1990-02-07 1991-02-07 In-tank type electric pump

Country Status (3)

Country Link
JP (1) JPH03102089U (en)
DE (1) DE4103731A1 (en)
GB (1) GB2241741A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999008442A1 (en) * 1997-08-08 1999-02-18 Vision Integree, S.A.R.L. Chopperless operation of a thermal infrared radiation sensor system
EP0969201A3 (en) * 1998-06-29 2000-07-05 Robert Bosch Gmbh Fuel delivery unit with centrifugal pump and silencer through which fuel flows

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3746472A (en) * 1971-08-06 1973-07-17 Rupp Co Warren Submersible electric pump having fluid pressure protective means
JPS5070212A (en) * 1973-10-26 1975-06-11
JPS51126319A (en) * 1975-04-28 1976-11-04 Toshiba Corp Oscillation damping alloy
JPS51133806A (en) * 1975-05-15 1976-11-19 Toshiba Corp Blower
JPS51133805A (en) * 1975-05-15 1976-11-19 Toshiba Corp Fan
GB1484718A (en) * 1973-10-29 1977-09-01 Tokyo Shibaura Electric Co Machine parts formed of a high damping alloy
GB1541758A (en) * 1976-04-28 1979-03-07 Mitsubishi Heavy Ind Ltd Titanium alloy with high internal friction and method of heat-treating the alloy
JPS5732349A (en) * 1980-07-31 1982-02-22 Mitsubishi Keikinzoku Kogyo Kk Damping aluminum alloy
JPS5816038A (en) * 1981-07-22 1983-01-29 Mitsubishi Keikinzoku Kogyo Kk Manufacture of die cast aluminum product with high damping capacity
JPS5974246A (en) * 1982-10-19 1984-04-26 Mitsubishi Metal Corp Production of zinc alloy member for damping vibration
US4692092A (en) * 1983-11-25 1987-09-08 Nippondenso Co., Ltd. Fuel pump apparatus for internal combustion engine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5726135A (en) * 1980-07-22 1982-02-12 Mazda Motor Corp Vibration controlling aluminum material for car and its manufacture
JPS5861246A (en) * 1981-10-06 1983-04-12 Mitsuo Sohgoh Kenkyusho Kk Aluminum alloy
DE8223054U1 (en) * 1982-08-14 1983-02-03 Schneider, Hans, 6551 Bretzenheim STAINLESS STEEL SIDE CHANNEL PUMP
DE3708336C2 (en) * 1987-03-14 1996-02-15 Bosch Gmbh Robert Impeller for conveying a medium
JPH089995B2 (en) * 1987-04-30 1996-01-31 日本電装株式会社 Motor type fuel pump
JPH01132735A (en) * 1987-11-17 1989-05-25 Kasei Naoetsu:Kk High damping aluminum alloy
JP2532129B2 (en) * 1988-06-21 1996-09-11 三菱化学株式会社 Aluminum alloy for casting with excellent vibration isolation

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3746472A (en) * 1971-08-06 1973-07-17 Rupp Co Warren Submersible electric pump having fluid pressure protective means
JPS5070212A (en) * 1973-10-26 1975-06-11
GB1484718A (en) * 1973-10-29 1977-09-01 Tokyo Shibaura Electric Co Machine parts formed of a high damping alloy
JPS51126319A (en) * 1975-04-28 1976-11-04 Toshiba Corp Oscillation damping alloy
JPS51133806A (en) * 1975-05-15 1976-11-19 Toshiba Corp Blower
JPS51133805A (en) * 1975-05-15 1976-11-19 Toshiba Corp Fan
GB1541758A (en) * 1976-04-28 1979-03-07 Mitsubishi Heavy Ind Ltd Titanium alloy with high internal friction and method of heat-treating the alloy
JPS5732349A (en) * 1980-07-31 1982-02-22 Mitsubishi Keikinzoku Kogyo Kk Damping aluminum alloy
JPS5816038A (en) * 1981-07-22 1983-01-29 Mitsubishi Keikinzoku Kogyo Kk Manufacture of die cast aluminum product with high damping capacity
JPS5974246A (en) * 1982-10-19 1984-04-26 Mitsubishi Metal Corp Production of zinc alloy member for damping vibration
US4692092A (en) * 1983-11-25 1987-09-08 Nippondenso Co., Ltd. Fuel pump apparatus for internal combustion engine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999008442A1 (en) * 1997-08-08 1999-02-18 Vision Integree, S.A.R.L. Chopperless operation of a thermal infrared radiation sensor system
EP0969201A3 (en) * 1998-06-29 2000-07-05 Robert Bosch Gmbh Fuel delivery unit with centrifugal pump and silencer through which fuel flows
US6308691B1 (en) 1998-06-29 2001-10-30 Robert Bosch Gmbh Fuel supply aggregate with a rotary pump

Also Published As

Publication number Publication date
GB9102666D0 (en) 1991-03-27
JPH03102089U (en) 1991-10-24
DE4103731A1 (en) 1991-08-08

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)