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fluid line

A fluid pipeline and fluid technology, which is used in machine/engine, crankcase ventilation, mechanical equipment, etc., and can solve the problems of reduced dimensional accuracy of orifices and insufficient air tightness of partition walls.

Active Publication Date: 2021-11-02
NIFCO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the device of Patent Document 1, the partition wall is attached to the fluid line by fitting using the mounting groove, so the airtightness of the partition wall (blocking the upstream and downstream of the flow path) is insufficient.
On the other hand, in order to improve the airtightness of the partition wall, joining by vibration welding or the like is conceivable. However, in this case, the adverse effects of the vibration during welding will affect the orifice, which may cause the throttling. Decreased accuracy of hole size and shape

Method used

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Embodiment Construction

[0020] Embodiments of the present invention will be described below based on the drawings.

[0021] exist figure 1 The overall structure of the fluid line 1 in the embodiment of the present invention is shown in . As shown in the figure, a fluid line 1 is formed by combining an upper member 2 and a lower member 3, and a fluid passage 4 is formed in a region surrounded by the two members. In this embodiment, the fluid line 1 is a blow-by gas line provided in the engine of the vehicle, and the blow-by gas (gas leaked from the combustion chamber of the engine) flows from a channel provided on the upstream side of the lower member 3 . The fluid is introduced into the opening end 5 , passes through the fluid passage 4 , and is discharged from the opening end 6 provided on the downstream side of the upper member 2 . In addition, the upper member 2 is a member integrated with the cylinder head cover of the engine, and has a top wall 2A and side walls 2B on both sides.

[0022] A p...

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Abstract

The invention provides a fluid pipeline for fluid circulation, which can improve the airtightness of the partition wall without reducing the accuracy of the size and shape of the orifice provided in the partition wall. The partition wall (10) of the fluid line (1) is formed by joining the upper partition wall part (11) and the lower side partition wall part (12) by welding. The lower partition wall part (12) has a joint side part (13) and an orifice side part (wall part 31), and a joint part (19) with the upper partition wall part (11) is provided on the joint side part (13). ), on the other hand, the orifice (32) is provided on the orifice side portion, so that the joint (19) and the orifice (32) are arranged at positions deviated from the joint direction.

Description

technical field [0001] The present invention relates to fluid lines for communicating fluids. Background technique [0002] Among the fluid lines, there is a line configured to divide the fluid passage by a partition wall, and restrict the flow of the fluid by an orifice provided in the partition wall. For example, Patent Document 1 (Japanese Unexamined Patent Application Publication No. 2016-114035) discloses a device in which, in an oil separator installed in a vehicle such as an automobile, a section is provided on a partition wall provided in a blow-by gas flow path. The orifice separates the oil from the blow-by gas by blowing the gas accelerated by the orifice to the opposing substrate. [0003] Patent Document 1: Japanese Patent Laid-Open No. 2016-114035 [0004] However, in the device of this patent document 1, since the partition wall is attached to the fluid line by fitting using the attachment groove, the airtightness of the partition wall (blocking the upstream...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01M13/04
CPCF01M13/04F01M13/0405F01M2013/0005F01M2013/0433
Inventor 中谷浩之
Owner NIFCO INC
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