CN109029825A - A kind of use in washing machine micro-pressure sensor - Google Patents
A kind of use in washing machine micro-pressure sensor Download PDFInfo
- Publication number
- CN109029825A CN109029825A CN201810913279.0A CN201810913279A CN109029825A CN 109029825 A CN109029825 A CN 109029825A CN 201810913279 A CN201810913279 A CN 201810913279A CN 109029825 A CN109029825 A CN 109029825A
- Authority
- CN
- China
- Prior art keywords
- support
- diaphragm
- washing machine
- pressure sensor
- intake cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005406 washing Methods 0.000 title claims abstract description 28
- 230000005291 magnetic effect Effects 0.000 claims abstract description 16
- 239000002775 capsule Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
- G01L7/02—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges
- G01L7/08—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges of the flexible-diaphragm type
- G01L7/082—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges of the flexible-diaphragm type construction or mounting of diaphragms
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
- Control Of Washing Machine And Dryer (AREA)
Abstract
The invention discloses a kind of use in washing machine micro-pressure sensors, capsule including intake cover and above the intake cover, coil rack is set in the cavity that the capsule and the intake cover are constituted, it is characterized by: the intake cover is equipped with diaphragm, the mandril support that support magnetic core passes through the coil rack is fixedly connected on the diaphragm, and the positioning that positioning is plugged to below the mandril support that raises upward is equipped in the middle part of the diaphragm and is pulled out a little.This use in washing machine micro-pressure sensor of the present invention, structure is simple, and stability is good, at low cost, using accuracy height, with good application prospect.
Description
Technical field
The invention belongs to sensor technical fields, more specifically to a kind of use in washing machine micro-pressure sensor.
Background technique
Use in washing machine micro-pressure sensor, interior be equipped with can be to the deformable diaphragm of presser sensor, the dress of prior art septation
With time-consuming and laborious, and stability is poor, and be further improved promotion.
Summary of the invention
Present invention aim to address problem of the existing technology, provide that a kind of structure is simple, and stability is good, at low cost
Use in washing machine micro-pressure sensor.
To achieve the goals above, the technical scheme adopted by the invention is as follows: provided this use in washing machine minute-pressure sensing
Device, the capsule including intake cover and above the intake cover, coil rack is set to the capsule and the intake cover is constituted
Cavity in, it is characterised in that: the intake cover be equipped with diaphragm, support magnetic core pass through the coil rack mandril support fix
It is connected on the diaphragm, the positioning that positioning is plugged to below the mandril support that raises upward is equipped in the middle part of the diaphragm and is pulled out a little.
To keep above-mentioned technical proposal more detailed and specific, the present invention also provides optimization technique sides further below
Case, to obtain satisfied practical function:
The diaphragm includes the supporting plane with the support connection of mandril backing face, and the positioning, which is pulled out, is a little set to the branch
Support planar central.
The locating slot that the annular that recess downwards is formed is equipped between a little, the mandril are pulled out in the supporting plane and the positioning
Support lower end, which is equipped with, extends downwardly the corresponding bulge loop being plugged in the locating slot.
The a little n font structure to raise upward is pulled out in the positioning.
The coil rack card that corresponding support is connected to the coil rack lower end is equipped with close to the outer ledge of the diaphragm
Access slot, the outer rim of the diaphragm are to support the coil rack supporting table of the coil rack.
The lower end of the coil rack supporting table is equipped with the downwardly convex raised line contacted with the intake cover end face.
The lower section of the diaphragm is equipped with the support spring being supported between the diaphragm and the intake cover.
The intake cover be equipped with protrusion to support the supporting table of the support spring, in the bottom side of the wall of the diaphragm
Limiting stand equipped with support spring upper end described in corresponding support limit.
The intake cover is equipped with suction nozzle, and the supporting table is equipped with the connection suction nozzle and the positioning is pulled out on a little
The through-hole of n font structure cavity.
The magnetic core is placed in the mandril support, and mandril support upper end is connected with the mandril cap of the fixed magnetic core, institute
Mandril cap is stated equipped with adjustment spring, the coil rack upper end is equipped with adjusting nut.
This use in washing machine micro-pressure sensor of the present invention compared with prior art, has the advantage that the present invention is this and washes
Clothing machine micro-pressure sensor, structure is simple, and stability is good, at low cost, using accuracy height, with good application prospect.
Detailed description of the invention
The label in content and figure expressed by the attached drawing to this specification is briefly described below:
Fig. 1 is use in washing machine micro-pressure sensor structural schematic diagram；
Fig. 2 is diaphragm of rubber structural schematic diagram；
Fig. 3 is diaphragm of rubber cross-sectional view；
In the figure, it is marked as 1, intake cover, 2, capsule, 3, regulating nut, 4, coil rack, 5, adjustment spring, 6, magnetic core, 7,
Mandril cap, 8, mandril support, 9, diaphragm, 91, positioning pull out a little, 92, locating slot, 93, supporting plane, 94, coil rack clamping groove,
95, coil rack supporting table, 96, raised line, 97, limiting stand, 10, support spring.
Specific embodiment
Below against attached drawing, by the description of the embodiment, making to a specific embodiment of the invention further details of
Explanation.
This use in washing machine micro-pressure sensor of the present invention as shown in Figure 1, 2, 3, including intake cover 1 and is set on intake cover 1
The capsule 2 of side, coil rack 4 are set to intake cover 1 in the cavity that capsule 2 and intake cover 1 are constituted and are equipped with diaphragm 9, support magnetic core
The 6 mandril supports 8 for passing through coil rack 4 are fixedly connected on diaphragm 9, and the positioning that raises upward is equipped in the middle part of diaphragm 9 and is plugged to mandril
The positioning of the lower section of support 8 pulls out a little 91.
In the present invention, as shown in Figure 2,3, diaphragm 9 includes the supporting plane 93 with the support connection of 8 bottom surface of mandril support, positioning
It pulls out and a little 91 is set to 93 center of supporting plane.Supporting plane 93 and positioning are pulled out a little be equipped with that recess downwards formed between 91 annular and are determined
Position slot 92,8 lower end of mandril support, which is equipped with, extends downwardly the corresponding bulge loop 96 being plugged in locating slot 92.Diaphragm 9 uses One-Point Location,
Its structure can be simplified, save production and maintenance cost, and convenient for assembly, the structure of this One-Point Location of the present invention can realize stabilization
Positioning support, promote the service performance of entire micro-pressure sensor.
In the present invention, it is preferred that it 91 is the n font structure to raise upward that positioning, which is pulled out a little,.Intake cover 1 is equipped with suction nozzle,
The supporting table of intake cover 1 is equipped with connection suction nozzle and the through-hole of a little upper n font structure cavity is pulled out in positioning, and ambient pressure acts on
On diaphragm, promotion feeling is answered and detection accuracy.
In the present invention, as shown in fig. 1, corresponding support is equipped with close to the outer ledge of diaphragm 9 and is clamped under online ring framework 4
The coil rack clamping groove 94 at end, the outer rim of diaphragm 9 are to support the coil rack supporting table 95 of coil rack 4.Such structure with
Guarantee that coil rack in the intracorporal stable support of shell, avoids its positional shift, improves the detection accuracy of the micro-pressure sensor.
In the present invention, the lower end of coil rack supporting table 95 is equipped with the downwardly convex raised line contacted with 1 end face of intake cover
96, to improve its sealing performance.
In the present invention, the lower section of diaphragm 9 is equipped with the support spring 10 being supported between diaphragm 9 and intake cover 1.Intake cover 1
Be equipped with protrusion to support the supporting table of support spring 10, the bottom side of the wall of diaphragm is equipped with corresponding support limit support spring
The limiting stand of upper end.Its whole stability of strutting system is further promoted by the effect of support spring 10, promotes detection accuracy.
In the present invention, magnetic core 6 is placed in mandril support 8, and 8 upper end of mandril support is connected with the mandril cap 7 of fixed magnetic core 6, mandril
Cap 7 is equipped with adjustment spring 5, and 4 upper end of coil rack is equipped with adjusting nut 3.Adjustment spring 5 is pressed on magnetic core 6 by adjusting nut 3
On, in favor of the reset of diaphragm 9.
The present invention use in washing machine micro-pressure sensor is built-in to pressure-sensitive deformable diaphragm 9, diaphragm 9 be rubber every
Film, diaphragm 9 and intake cover 1 are composed to form fine and close collection chamber.Magnetic core 6 is formed by ferrite sintered, and inside is containing ferromagnetic
Material supports magnetic core 6 by mandril support 8 and mandril cap 7, and mandril support 8 is fixed on diaphragm 9.The up and down motion of diaphragm 9 by
External force air pressure is agitated, 5 elastic force of adjustment spring keeps whole linear up and down motion；9 deformation quantity of diaphragm depends on suffered on diaphragm 9
Compressive load per unit area value, compressive load per unit area value are greater than 5 value of elastic of adjustment spring, and diaphragm 9 rises overally, compressive load per unit area value
Equal to 5 value of elastic balance between two forces of adjustment spring, stable resonant frequency signal is exported, washing machine internal is precisely controlled by this
In liquid level and issue correctly instruction.
Washing machine micro-pressure sensor is a lc circuit, it collectively constitutes LC oscillating circuit with circuit in computer board, is passed through
The size of air pressure changes inductance, to change the frequency of oscillating circuit, single-chip microcontroller in computer board detects frequency.Pass through
The size of frequency judges water level.There is a gas chamber in washing machine cylinder, when water level changes, the pressure for changing plenum interior is big
Small, this gas chamber is connected by plastic flexible pipe and micro-pressure sensor.When work, diaphragm 9 is moved magnetic core 6 by zone of pressure and existed
It is moved up and down in the coil of LC oscillating circuit, magnetic core 6 moves up and down, and changes the inductance of coil, the variation warp of inductance
After crossing the starting of oscillation and amplifying circuit processing of LC oscillating circuit, it is converted to frequency signal and is sent into single-chip microcontroller progress inter-process, institute
Obtained frequency signal is sent into the drive module of computer board of washing machine, and computer board is according to numerical values recited to determine whether having reached pre-
If water level, to issue instruction, the on-off of water valve, control water inlet, to reach the water level height in control washing machine are controlled.
This use in washing machine micro-pressure sensor of the present invention, structure is simple, and stability is good, at low cost, uses accuracy height, tool
There is preferable application prospect.
The present invention is exemplarily described above in conjunction with attached drawing, but the present invention is not limited to aforesaid way, only
The improvement for the various unsubstantialities to be carried out using the inventive concept and technical scheme of the present invention directly applies to other occasions
, it falls within the scope of protection of the present invention.
Claims (10)
1. a kind of use in washing machine micro-pressure sensor, the capsule including intake cover and above the intake cover, coil rack are set
In in the cavity that the capsule and the intake cover are constituted, it is characterised in that: the intake cover is equipped with diaphragm, and support magnetic core is worn
The mandril support for crossing the coil rack is fixedly connected on the diaphragm, and the positioning that raises upward is equipped in the middle part of the diaphragm and is plugged to
Positioning below the mandril support is pulled out a little.
2. use in washing machine micro-pressure sensor described in accordance with the claim 1, it is characterised in that: the diaphragm includes and the mandril
The supporting plane of backing face support connection, the positioning, which is pulled out, is a little set to the supporting plane center.
3. use in washing machine micro-pressure sensor according to claim 2, it is characterised in that: the supporting plane and the positioning
The locating slot of the annular formed between a little equipped with recess downwards is pulled out, mandril support lower end is plugged to institute equipped with correspondence is extended downwardly
State the bulge loop in locating slot.
4. use in washing machine micro-pressure sensor described in accordance with the claim 3, it is characterised in that: it is a little to raise upward that the positioning, which is pulled out,
N font structure.
5. use in washing machine micro-pressure sensor according to claim 4, it is characterised in that: close to the outer ledge of the diaphragm
The coil rack clamping groove of the coil rack lower end is connected to equipped with corresponding support, the outer rim of the diaphragm is to support the line
The coil rack supporting table of ring framework.
6. use in washing machine micro-pressure sensor according to claim 5, it is characterised in that: under the coil rack supporting table
End is equipped with the downwardly convex raised line contacted with the intake cover end face.
7. according to use in washing machine micro-pressure sensor as claimed in any one of claims 1 to 6, it is characterised in that: under the diaphragm
Side is equipped with the support spring being supported between the diaphragm and the intake cover.
8. use in washing machine micro-pressure sensor according to claim 7, it is characterised in that: the intake cover is equipped with protrusion
To support the supporting table of the support spring, the bottom side of the wall of the diaphragm is equipped in support spring described in corresponding support limit
The limiting stand at end.
9. use in washing machine micro-pressure sensor according to claim 8, it is characterised in that: the intake cover is equipped with air inlet
Mouth, the supporting table is equipped with the connection suction nozzle and the through-hole of a little upper n font structure cavity is pulled out in the positioning.
10. use in washing machine micro-pressure sensor described in accordance with the claim 1, it is characterised in that: the magnetic core is placed on the mandril
In support, mandril support upper end is connected with the mandril cap of the fixed magnetic core, and the mandril cap is equipped with adjustment spring, the line
Ring framework upper end is equipped with adjusting nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810913279.0A CN109029825A (en) | 2018-08-13 | 2018-08-13 | A kind of use in washing machine micro-pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810913279.0A CN109029825A (en) | 2018-08-13 | 2018-08-13 | A kind of use in washing machine micro-pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109029825A true CN109029825A (en) | 2018-12-18 |
Family
ID=64633767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810913279.0A Pending CN109029825A (en) | 2018-08-13 | 2018-08-13 | A kind of use in washing machine micro-pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109029825A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110186534A (en) * | 2019-06-27 | 2019-08-30 | 芜湖乐佳电器有限公司 | A kind of chip-shaped fluid sensor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102239395A (en) * | 2008-12-05 | 2011-11-09 | 伊利诺斯工具制品有限公司 | Modified pressure sensor for detecting operating parameters of an electric household appliance featuring a relatively movable component |
| CN104977117A (en) * | 2014-04-04 | 2015-10-14 | 伊利诺斯工具制品有限公司 | Wind pressure (or wind speed) sensor and blower using wind pressure (or wind speed) sensor |
| CN206362481U (en) * | 2017-01-13 | 2017-07-28 | 宁国佩特恩电器科技有限公司 | A kind of pressure sensor |
| CN208458914U (en) * | 2018-08-13 | 2019-02-01 | 芜湖乐佳电器有限公司 | Use in washing machine micro-pressure sensor |
-
2018
- 2018-08-13 CN CN201810913279.0A patent/CN109029825A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102239395A (en) * | 2008-12-05 | 2011-11-09 | 伊利诺斯工具制品有限公司 | Modified pressure sensor for detecting operating parameters of an electric household appliance featuring a relatively movable component |
| CN103344376A (en) * | 2008-12-05 | 2013-10-09 | 伊利诺斯工具制品有限公司 | Modified pressure sensor for detecting operating parameters of an electric household appliance featuring a relatively movable component |
| CN104977117A (en) * | 2014-04-04 | 2015-10-14 | 伊利诺斯工具制品有限公司 | Wind pressure (or wind speed) sensor and blower using wind pressure (or wind speed) sensor |
| CN206362481U (en) * | 2017-01-13 | 2017-07-28 | 宁国佩特恩电器科技有限公司 | A kind of pressure sensor |
| CN208458914U (en) * | 2018-08-13 | 2019-02-01 | 芜湖乐佳电器有限公司 | Use in washing machine micro-pressure sensor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110186534A (en) * | 2019-06-27 | 2019-08-30 | 芜湖乐佳电器有限公司 | A kind of chip-shaped fluid sensor |
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