DEVICE FOR MEASURING A FILL LEVEL OF A LIQUID IN A CONTAINER WITH AN ULTRASONIC SENSOR

• US 20180087950A1
• Filed: 09/26/2017
• Published: 03/29/2018
• Est. Priority Date: 09/27/2016
• Status: Active Grant

• Current Assignee: Hella KGaA Hueck & Company
• Original Assignee: Hella KGaA Hueck & Company
• Inventors: Niemann, Thomas, PALLOKS, Jrgen
• Granted Patent: US 10,444,058 B2
• Time in Patent Office: Days
• CPC Class Codes: G01F 23/2962 Measuring transit time of reflected waves
• CPC Class Codes: G01F 23/2968 Transducers specially adapted for acoustic level indicators
• CPC Class Codes: G01H 3/00 Measuring characteristics of vibrations by using a detector in a fluid G01H7/00, G01H9/00, G01H11/00 take precedence
• CPC Class Codes: G01N 29/221 Arrangements for directing or focusing the acoustical waves electronic orientation or focusing G01N29/262; sound directing or focusing G10K11/26; mechanical steering of sound transducers or their beams G10K11/35
• CPC Class Codes: G01N 29/223 Supports, positioning or alignment in fixed situation mounting transducers per se G10K11/004
• CPC Class Codes: G10K 11/004 Mounting transducers, e.g. provided with mechanical moving or orienting device mountings specially adapted to a particular sound-producing device, see the preceding groups G10K1/00 - G10K9/00, e.g. G10K1/26, G10K1/28, G10K9/22; arrangements of sonic watch equipment on submarines B63G8/39; buoys B63B22/00

Abstract

In a device for measuring a fill level of a liquid in a container with an ultrasonic sensor which is arranged on a floor element, wherein a damping cup with a measuring tube is assigned to the ultrasonic sensor, the damping cup has an external housing and an internal housing. The internal housing contains the measuring tube, and either the internal housing has outwardly protruding contact elements that lie against the inside of the external housing or the external housing has outwardly protruding contact elements that lie against the outside of the internal housing. The external housing is also provided and designed for pluggable mounting of of the internal housing, and a channel is formed between the internal housing and the external housing.

Claims

1. A device for measuring a fill level of a liquid in a container with an ultrasonic sensor which is arranged on a floor element, wherein a damping cup with a measuring tube is assigned to the ultrasonic sensor,

wherein

the damping cup has an external housing and an internal housing,

the internal housing includes the measuring tube,

either the internal housing has outwardly protruding contact elements that lie against the inside of the external housing, or the external housing has inwardly protruding contact elements that lie against the outside of the internal housing, and

the external housing is provided and designed for the pluggable mounting of the internal housing,

a channel is formed between the internal housing and the external housing, and

the lower end regions of the internal housing and the external housing are connected to the floor element.

2. The device according to claim 1, wherein the lower region of the internal housing has an antechamber.

3. The device according to claim 2, wherein the internal housing has a protruding edge on the top edge of the antechamber, which protruding edge closes off the antechamber at the top and is provided and designed to bear on the inside of the external housing.

4. The device according to claim 1, wherein the external housing has a ventilation aperture in the upper region.

5. The device according to claim 1, wherein in the plugged state the internal housing protrudes beyond the bottom of the external housing.

6. The device according to claim 1, wherein the lower end regions of the internal housing and the external housing are welded to the floor element.

7. The device according to claim 1, wherein the floor element is constructed as a flange.

8. The device according to claim 1, wherein the lower end regions of the internal housing and/or of the external housing and/or the corresponding mating surfaces on the floor element are sloping.

9. The device according to claim 8, wherein the lower end regions of the external housing have a long inclined element, and the lower end regions of the internal housing have an inclined element which is shorter than these.

10. The device according to claim 1, wherein the protruding contact areas extend over more than half the height of the damping cup.

11. The device according to claim 1, wherein when viewed in cross section at least three protruding contact areas are provided.

12. An internal combustion engine, particularly for a motor vehicle with an oil-lubricated engine,

wherein

the oil-lubricated engine is equipped with a device according to claim 1, for measuring the fill level of the engine oil.