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Pump for pressure to fluid and fluid box device with said pump

A fluid tank, fluid technology, applied to the components, pumps, pump elements, etc. of the pumping device for elastic fluid, can solve the problems of low cooling efficiency and no oil introduction.

Inactive Publication Date: 2007-03-14
TOYOTA IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no inlet port is provided to bring the oil from the outside of the housing into its inside, but only the discharge oil from the pump to cool the motor
Since cooling is only achieved by draining oil, the cooling efficiency is quite low

Method used

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  • Pump for pressure to fluid and fluid box device with said pump
  • Pump for pressure to fluid and fluid box device with said pump
  • Pump for pressure to fluid and fluid box device with said pump

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Embodiment Construction

[0014] A first embodiment of the present invention will be described below with reference to FIGS. 1 and 2 . FIG. 2 is a schematic diagram of a fluid fuel supply system for supplying dimethyl ether fuel (DME fuel) or fluid to the fuel injection device F. As shown in FIG. The fuel injection device F is connected to a diesel-type internal combustion engine E as a drive source of the automobile. The fluid fuel supply system includes a fuel tank 11 and a fuel pump 12 . The fuel tank 11 serves as a fluid tank for storing DME (dimethyl ether). The fuel pump 12 is provided in the fuel tank 11 and functions as a pump for pressurizing a fluid, and supplies DME from the fuel tank 11 to the fuel injection device F in liquid form. The DME mentioned above has a higher saturation pressure than atmospheric pressure at room temperature. When the inlet 16 for injecting DME into the fuel tank 11 is closed, the fuel tank 11 isolates the internal space of the tank 11 and maintains its internal...

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Abstract

The present invention relates to a pump capable of pressurizing fluid, in which the fluid in the fluid storage cavity of fluid tank has saturated pressure high than atmosphere pressure. Said pump is positioned nearby fluid tank, and said pumphas shell body and heat quantity producing mechanism. Said shell body has pump cavity, motor cavity and communicating channel between pump cavity and motor cavity, and includes at least one leading-in hole for leading the fluid into the shell body from the fluid storage cavity and outlet positioned over the leading-in hole for making said fluid be flowed back into fluid storage cavity from the shell body. The heat quantity producing mechanism is positioned in said shell body, and the above-mentioned circulation flow of fluid can be used for obviously reducing temperature in the shell body.

Description

technical field [0001] The present invention relates to a pump for pressurizing a fluid, and in particular to circulation of fluid through the pump. Background technique [0002] Unexamined Japanese Patent Publication No. 9-88807 discloses a pump for pressurizing a fluid. The pump has an integral structure including a hydraulic pump (pump mechanism) and an electric motor (motor mechanism) in the same unit case. The pump also contains oil passages for discharging oil from the hydraulic pump to the electric motor side and then to the outside of the housing. Thus, the discharged oil cools the electric motor. However, there is no introduction port for introducing oil from the outside of the housing to its inside, but only the discharge oil discharged from the pump to cool the motor. Since the cooling is only achieved by draining the oil, the cooling efficiency is rather low. [0003] Unexamined Japanese Utility Model Laid-Open No. 4-57693 also discloses a fluid pump. The fl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B1/12F04B53/08F02M37/10
Inventor 铃木茂
Owner TOYOTA IND CORP