Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Modified pressure sensor for detecting operating parameters of an electric household appliance featuring a relatively movable component

A technology for pressure sensors and household appliances, applied in fluid pressure measurement using inductance changes, household cleaning devices, applications, etc., can solve problems such as inaccuracy, large size of pressure switch, and difficult installation of pressure switches, and achieve low-cost effects

Inactive Publication Date: 2011-11-09
ILLINOIS TOOL WORKS INC
View PDF1 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the detection system described above is not without flaws; in fact, it is relatively inaccurate, since the contrast spring should be calibrated so as to allow the membrane to move due to vibrations in addition to pressure
For the same reason, the pressure switches provided for insertion into such systems are relatively large in size; finally, it is difficult to mount pressure switches on movable parts of household appliances

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Modified pressure sensor for detecting operating parameters of an electric household appliance featuring a relatively movable component
  • Modified pressure sensor for detecting operating parameters of an electric household appliance featuring a relatively movable component
  • Modified pressure sensor for detecting operating parameters of an electric household appliance featuring a relatively movable component

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] refer to figure 1 , numeral 1 denotes an improved pressure sensor as a whole for detecting an operating parameter of a household appliance 2 (for example, a washing machine or dryer) characterized by a component 3 (for example, a tub or a basket), said The component 3 is relatively movable with respect to the frame 4 of the household appliance 2. For example, in addition to detecting the liquid level L in the component 3 (that is, the hydraulic pressure related to the liquid level), the component 3 (and The nature (direction and amplitude) of the vibrations to which the whole household appliance 2) is exposed in use, for example due to unbalanced loads in components 3, eg due to poor momentary distribution of the load itself. Thus, the household appliance 2 can be set in a known manner to either reduce or eliminate this imbalance, for example by appropriately driving the component 3 .

[0018] The pressure sensor 1 comprises a rigid housing 10 containing a deformable m...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A modified inductive pressure sensor (1) for detecting operating parameters of an electric household appliance such as a washing or drying machine (2), provided with a relatively movable component (3) with respect to the carcass, of the type including a rigid casing (10) accommodating a deformable membrane (11) sensitive to hydraulic pressure, a core (20) made of ferromagnetic material and operatively associated to the membrane, and a winding (21) fixed to the casing and operatively coupled to the core to form a variable inductance inductor (22); wherein a mass (40) is accommodated within the casing (10) and in immediate proximity of said membrane (11), free to move with respect to the casing (10) in at least one direction corresponding to the axis of the winding (21).

Description

technical field [0001] The present invention relates to an improved pressure sensor or pressure switch for detecting an operating parameter of a household appliance featuring a part that is movable relative to the carcass of the appliance itself, such as a washing machine, dryer or the like. Cylinder or basket of type machines. Background technique [0002] It is known that in household appliances of the aforementioned type several operating parameters should be known in order to ensure correct operation of the household appliance, such as the uniformity of distribution of the laundry in the basket, the pressure and / or capacity of the water supply, etc. [0003] French patent application FR-A-2767194 describes a system for detecting some of these parameters using a liquid that is connected to the water supply system of the household appliance and integrally connected to the rotating basket containing the household appliance (washing machine or dryer). A pressure switch (pre...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01L9/10
CPCD06F37/203D06F39/087A47L15/4244D06F2103/18D06F34/16D06F2103/26G01L9/10
Inventor 塞尔吉奥·乔达诺伊戈尔·克兰杰卡
Owner ILLINOIS TOOL WORKS INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com