Valves and valve actuation – Electrically actuated valve – Including solenoid
Patent
1988-08-31
1989-11-14
Rosenthal, Arnold
Valves and valve actuation
Electrically actuated valve
Including solenoid
F16K 3106
Patent
active
048802069
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a magnetic valve comprising a valve seat and a closing member movable into a closing direction upon a magnetic field traversing a coil. It is known in such a valve (DE-OS 34 16 465) to separate a hydraulic portion including an inlet opening and a outlet opening, an annular valve seat and closing member, from a magnetic portion spatially. The magnetic portion is arranged above the hydraulic portion, and a magnet armature, which is attracted by a toroidal coil according to control, actuates the valve member via a valve stem. Therefore, in this known valve, it is necessary to change the flow direction of a medium from the valve, usually the cooling liquid of an internal combustion engine, in a twofold manner, since the valve part, with its closing member is arranged in an axial stacked arrangement with the armature of the magnet part and the liquid medium cannot also flow through the magnet part with armature after the valve member moves to its open position. Nevertheless, in this known valve which is suitable for use in a heating device for heating the passenger space of a motor vehicle having a liquid-cooled internal combustion engine, it must be ensured that no corrosion can occur above the hydraulic area, that is, in the magnet part from an air stream. Therefore, the valve stem a has a thoughbore and forms a duct for the cooling medium.
In addition, the known magnetic valve has a rather complicated construction since, to give a numerical example, no fewer than 18 element parts or components are required, and a considerable magnetic circulation and a correspondingly large expenditure of energy are required for controlling the magnet coil due to the transmission of force via the valve stem for switching the valve.
SUMMARY OF THE INVENTION
It is the object of the invention to provide a magnetic valve, which is preferably utilized as a hot water timing valve for use in heating devices in motor vehicles (in air-conditioning systems on the water side), and is resistant to wear, and function in a reliable manner while, at the same time, being substantially simplified structurally.
This object is achieved by providing a valve with a medium flow path within the coil and in which the closing member forms the magnet armature.
The magnetic valve according to the invention has the advantage that magnetic functions and functions relating to fluid mechanics are realized with the same elements by a simple coaxial construction based on a simple principle of operation and without use of springs.
The magnetic valve, according to the invention, can be drastically simplified structurally, since, to provide another comparison example in numerical values, only four parts or components are required, so that, in addition to a considerable reduction in cost, the structure is suitable for automatic assembly.
A gas or liquid medium from the magnetic valve need not be diverted in the direction of flow, and a single movable part of the magnetic valve which, according to the invention, simultaneously acts as a closing member and a magnet armature, is shaped so as to benefit flow in such a way that the majority of the pressure loss, which is very slight in any case (a total of only approximately 0.2 bar as seen via the valve), can be recovered again, practically without vortex losses, after passing the valve seat area; in other words, the higher flow velocity in the seat area, which occurs as kinetic energy of the fluid, is realized as a pressure gain downstream of the valve.
In addition, it is advantageous that a trouble-free operation also results when, considering the specific area of application of the magnetic valve in air-conditioning systems for motor vehicles and the like, a cooling mixture is contaminated with foundry sand, for example, or other and, also with fibrous agents.
Since the magnetic valve according to the invention is much smaller than known valves of this type because the previous axial stacked arrangement of the magnet part and the hydraulic part is eliminat
REFERENCES:
patent: 3529806 (1970-09-01), Kozel
patent: 3669315 (1972-06-01), Kuckens
patent: 4240468 (1980-12-01), Brand et al.
Robert & Bosch GmbH
Rosenthal Arnold
Striker Michael J.
LandOfFree
Magnetic valve does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Magnetic valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic valve will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1848807