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Control valve

A control valve and flow control technology, which is applied in the direction of coolant flow control, valve details, multi-way valves, etc., can solve problems such as difficulty in maintaining performance for a long time and easy influx of pollutants, so as to prevent performance degradation and smooth flow The effect of changing properties

Active Publication Date: 2020-10-09
YAMADA SEISAKUSHO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the interval between the slits is narrowed, the contaminants mixed in the liquid will easily rush into the slits, making it difficult to maintain the desired performance over a long period of time.

Method used

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Embodiment Construction

[0036]Next, embodiments of the present invention will be described based on the drawings. In the following description, a case where the control valve of the present embodiment is employed in a cooling system for cooling an engine using cooling water will be described.

[0037]

[0038] figure 1 is a block diagram of the cooling system 1.

[0039] Such as figure 1 As shown, the cooling system 1 is mounted on a vehicle having at least an engine as a driving source of the vehicle. In addition, as the vehicle, a hybrid vehicle, a plug-in hybrid vehicle, or the like may be used other than a vehicle having only an engine.

[0040] Cooling system 1 is engine 2 (ENG), water pump 3 (W / P), radiator 4 (RAD), heat exchanger 5 (H / EX), heat core 6 (HTR), EGR cooler 7 (EGR) and the control valve 8 (EWV) are configured by connecting various flow paths 10 to 14 .

[0041] The water pump 3 , the engine 2 , and the control valve 8 are sequentially connected on the main flow path 10 from ...

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PUM

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Abstract

A control valve includes a casing, a valve body, and a seal cylinder member. The casing has an inlet and an outlet. The valve body is rotatably disposed inside the casing, and has a circumferential wall portion formed with a valve hole providing communication between the inside and the outside. One end portion of the seal cylinder member communicates with the outlet, and a valve sliding contact surface is provided at the other end portion. A flow rate control groove having a bottom surface which is recessed with respect to the outer circumferential surface of the circumferential wall portion and has one end portion continuous with the valve hole is provided on at least one of a front side and a rear side of an edge portion of the valve hole in the circumferential wall portion in a rotatingdirection of the valve body.

Description

technical field [0001] The present invention relates to a control valve used for channel switching and the like of cooling water for vehicles. Background technique [0002] In a cooling system that uses cooling water to cool the engine, in addition to the radiator flow path that circulates between the radiator and the engine, a bypass flow path that bypasses the radiator and a warm water flow that passes through the oil heater are sometimes provided. machine flow etc. In such a cooling system, a control valve is interposed at a branch portion of the flow path, and the flow path is appropriately switched by the control valve. As a control valve, it is known that a cylindrical valve body is rotatably arranged in a housing, and an arbitrary flow path is opened and closed corresponding to the rotational position of the valve body (for example, refer to Japanese Patent Application Laid-Open No. 2017-3064 (hereinafter referred to as patent). Document 1)). [0003] The control v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K11/085F01P7/14F01P7/16
CPCF16K11/0856F01P7/14F01P7/165F01P2007/146F01P2050/22F16K5/181F16K31/002F16K5/12F16K5/0464F16K27/065F16K11/085
Inventor 大关哲史
Owner YAMADA SEISAKUSHO KK
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