Flow measuring device
First Claim
Patent Images
1. A flow measuring device for coolant guided through injection molds, comprising:
- a coolant inlet for receiving coolant;
a coolant outlet leading to an injection mold;
a shut-off valve disposed between said coolant inlet and said coolant outlet;
a flowmeter having an inlet for receiving coolant from said injection mold, and an outlet;
a flow control valve disposed upstream of said outlet of said flowmeter; and
a common control mechanism for said shut-off valve and said flow control valve, wherein when both of said valves are opened and a flow of said coolant is set by means of said flow control valve, said shut-off valve constantly has a cross-sectional area of such a magnitude that a pressure loss in said shut-off valve is negligible relative to a pressure loss in said flow control valve.
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Abstract
A flow measuring device, especially for coolant guided through injection molds, is provided. The flow measuring device has a coolant inlet, a coolant outlet leading to an injection mold, a shut-off valve disposed between the coolant inlet and the coolant outlet, a flow meter having an inlet for receiving coolant from the injection mold and an outlet, a flow control valve disposed upstream of the outlet of the flow meter, and a common control mechanism for the shut-off valve and the flow control valve.
28 Citations
16 Claims
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1. A flow measuring device for coolant guided through injection molds, comprising:
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a coolant inlet for receiving coolant; a coolant outlet leading to an injection mold; a shut-off valve disposed between said coolant inlet and said coolant outlet; a flowmeter having an inlet for receiving coolant from said injection mold, and an outlet; a flow control valve disposed upstream of said outlet of said flowmeter; and a common control mechanism for said shut-off valve and said flow control valve, wherein when both of said valves are opened and a flow of said coolant is set by means of said flow control valve, said shut-off valve constantly has a cross-sectional area of such a magnitude that a pressure loss in said shut-off valve is negligible relative to a pressure loss in said flow control valve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification