CN202066555U - Water level sensor for household electric appliance equipment - Google Patents
Water level sensor for household electric appliance equipment Download PDFInfo
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- CN202066555U CN202066555U CN2011201184998U CN201120118499U CN202066555U CN 202066555 U CN202066555 U CN 202066555U CN 2011201184998 U CN2011201184998 U CN 2011201184998U CN 201120118499 U CN201120118499 U CN 201120118499U CN 202066555 U CN202066555 U CN 202066555U
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- coil
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Abstract
A water level sensor for household electric appliance equipment accurate in detection and free of blind zones of detection comprises an air cover, a casing, a diaphragm unit, an adjusting screw, a main spring and a coil unit. The diaphragm unit comprises a diaphragm, a diaphragm plate and an iron core. The iron core is located on the diaphragm plate through an elastic claw structure extending outward and arranged on the diaphragm plate. The water level sensor is characterized in that the casing is provided with a locating boss and a locating hole, a coil frame work is provided with a lateral concave body, a protruding structure and a fixing hole. The lateral concave body corresponds to a locating clamping body of the casing to enable the coil unit to be coaxial with the casing. The fixing hole of the framework is fixed on the locating boss of the casing. The protruding structure of the framework is in interference fit with the locating hole of the casing, a cylinder-shaped guide body is arranged inside the air cover, an auxiliary spring is arranged on the air inlet side of the diaphragm, the auxiliary spring is sleeved on the cylinder-shaped guide body of the air cover, one end of the auxiliary spring abuts against the bottom of the air cover, the other end of the auxiliary spring is located on the diaphragm, and the main spring is arranged on the outside of the diaphragm plate of the diaphragm unit. The water level sensor can be used for the household electric appliance equipment.
Description
Technical field
The utility model relates to the level sensor that utilizes the pressure variation to cause coil inductance variation principle.
Background technology
The problem of the level sensor existence that ZL200920114627.4 and ZL200920114626.X disclose in the public technology at present is:
1.ZL200920114627.4 sensor be the slim sensor of single spring, inductance in the manufacture process, when fluctuation takes place in electric capacity, the frequency jitter of sensor initial stage is big, and it is inoperative minute-pressure district spring to occur after fixedly water level and Frequency point are regulated, and causes small water level district accurately not detect.
2.ZL200920114626.X in the sensor mentioned adopted dual spring (main spring and minute-pressure spring) structure, main spring and minute-pressure spring are all in diaphragm plate water outlet direction one side, be provided with spring base between two springs, fixed frequency, the outer ring that water level point is regulated hydraulic pressure release rear spring seat is seated on the coil rack, when sensor uses, cross valve by the Pneumatic pipe cleaner of hydraulic pressure generation and impose on air chamber, because the initial stage force of compression of main spring is bigger, the initial bounce that bounce-back that time spent minute-pressure spring is subjected to is not enough to overcome main spring is made in outside minute-pressure, main spring keeps not being compressed, and minute-pressure spring pressurized gradually reduces, the bounce that forces barrier film to overcome the minute-pressure spring promotes iron core to moving near coil direction, up to iron core with after spring base contacts, the minute-pressure spring can not continue compression, and the transforming relationship between this stage external pressure and the iron core amount of movement is by the elasticity coefficient decision of minute-pressure spring.After external pressure continued increasing and overcomes the initial bounce of main spring, iron core promoted spring base compression main spring and moves to coil direction under the barrier film thrust.Transforming relationship between this stage external pressure and the iron core amount of movement is by the elasticity coefficient decision of main spring.Relation between whole thus external pressure variation and the iron core displacement depends on the characteristic of two springs respectively, the sensor output characteristic curve is made of in succession two sections, the slope sudden change appears in two sections curve junctions, when using this sensor, near sudden change place of described slope pressure can't convert according to output parameter and obtain, and promptly there is the detection blind area of local pressure section in this sensor.
Summary of the invention
The utility model will solve the existing existing minute-pressure section of single spring pressure transducer and can not accurately detect, and there is the problem of pressure detection blind area in existing dual spring formula sensor, a kind of water level sensor for home appliance of the present utility model is provided for this reason, the small water level of this level sensor district is detected accurately, and does not have the detection blind area in the whole pressure stage.
For addressing the above problem, the technical solution of the utility model comprises the gas lid, housing, diaphragm cell, set screw, main spring and coil unit, described diaphragm cell comprises barrier film, diaphragm plate and iron core, barrier film matches with the hole on the diaphragm plate by the deformable projection, has outer bullet pawl structure of opening on the described diaphragm plate, described iron core sleeve is loaded on this bullet pawl structure, by the rebound effect that plays pawl iron core is positioned on the diaphragm plate, its special character is to have positioning boss and pilot hole on the described housing, has the side concave volume on the coil rack, bulge-structure and fixed orifice, the side concave volume keeps coaxial with the corresponding coil unit and the housing of making of locator card body of housing, the fixed orifice of skeleton is fixed on the positioning boss of housing, the bulge-structure of skeleton and the pilot hole of housing keep interference fit, make coil and housing keep coaxial and be in stationary state, gas covers has button hole, gas lid inside has the cylindrical shape guide way, housing is pressed into the gas lid, projection on the housing matches with the button hole that gas covers diaphragm cell is positioned in the gas lid, the air inlet side of barrier film is provided with auxiliary spring, this auxiliary spring is set on the cylindrical shape guide way of gas lid, auxiliary spring one end overhead is in gas lid bottom, and the auxiliary spring other end is positioned on the barrier film, and described main spring is arranged at the diaphragm plate outside of diaphragm cell, one end of main spring contacts with the adjustment screw, the screw thread of set screw matches with the internal thread of housing, and the other end of main spring is arranged in the recess space of diaphragm plate, keeps main spring on the throne.
Can be provided with pilot hole A and pilot hole B on the skeleton of described coil unit, described electric capacity is electric capacity A, the pilot hole A that the pin A of this electric capacity passes skeleton is connected with the projection of the initial terminal of coil, and the pilot hole B that the pin B of electric capacity A passes skeleton is connected with the projection of coil end of a period terminal.
Can be provided with a splicing ear on the skeleton of described coil, described electric capacity is electric capacity A and electric capacity B, the pilot hole A that the pin A of electric capacity A passes skeleton is connected with the projection of the initial terminal of coil, the pilot hole C that the pin B of electric capacity A passes skeleton is connected with the projection of splicing ear, the pilot hole B that the pin A of electric capacity B passes skeleton is connected with the projection of coil end of a period terminal, and the pilot hole C that the pin B of electric capacity B passes skeleton is connected with the projection of splicing ear.
The utility model is because the air inlet side of barrier film is provided with auxiliary spring, this auxiliary spring is set on the cylindrical shape guide way of gas lid, auxiliary spring one end overhead is in gas lid bottom, the other end is positioned on the barrier film, the diaphragm plate arranged outside of diaphragm cell has main spring, one end of main spring contacts with the adjustment screw, the other end is arranged in the recess space of diaphragm plate, auxiliary spring of the present utility model in other words and main spring are arranged at the diaphragm plate both sides respectively, be that auxiliary spring is arranged at barrier film pressurized direction one side, main spring is arranged at moving direction one side behind the barrier film pressurized, two springs are resisted mutually, make barrier film be in steady strain state behind the pressurized, the low-pressure area that existing single spring neither can occur detects inaccurate phenomenon, and the existing existing detection of dual spring formula blind area phenomenon can not take place yet.
Description of drawings
Fig. 1 is the explosive view of A type (single spring type) level sensor in the past;
Fig. 2 is the explosive view of Type B (dual spring type) level sensor in the past;
Fig. 3 is the schematic perspective view of the utility model water level sensor for home appliance;
Fig. 4 is the axial cut-open view of the utility model water level sensor for home appliance;
Fig. 5 is the explosive view of the utility model water level sensor for home appliance;
Fig. 6 a is the structural representation of the utility model water level sensor for home appliance coil unit;
Fig. 6 b is the another structural representation of the utility model water level sensor for home appliance coil unit;
Fig. 7 is the locator meams synoptic diagram of the utility model water level sensor for home appliance;
Fig. 8 is the synoptic diagram of the utility model water level sensor for home appliance coil-housing mounting portion;
Fig. 9 is the synoptic diagram of the utility model water level sensor for home appliance gas lid-spring mounting portion;
Figure 10 is the inductance output characteristic curve of Type B level sensor in the past;
Figure 11 is the inductance output characteristic curve of A type level sensor in the past;
Figure 12 is the inductance output characteristic curve of the utility model water level sensor for home appliance;
Figure 13 is the frequency output characteristic curve of Type B level sensor in the past;
Figure 14 is the frequency output characteristic curve of A type level sensor in the past;
Figure 15 is the frequency output characteristic curve of the utility model water level sensor for home appliance.
Be labeled as among the figure: A gas lid, B housing, C barrier film, D diaphragm plate, E iron core, the F coil terminals, G electric capacity, H coil axes, I spring, J contact terminal, K adjusts screw, L lid, a gas lid, b housing, c barrier film, the d diaphragm plate, the e iron core, the f set screw, the g main spring, h adjusts spiral shell and is subjected to plate, the i spring abutment, the j telefault, the k back-moving spring, the l terminal, m rivets circle, 1 gas lid, 11 button holes, 12 guide waies, 2 housings, 21 locator card bodies, 22 projectioies, 23 positioning boss, 24 pilot holes, 25 internal threads, 3 diaphragm cells, 31 barrier films, 311 projectioies, 32 diaphragm plates, 321 holes, 322 play the pawl structure, 323 recess spaces, 33 iron cores, 4 set screw, 41 screw threads, 5 main springs, 6 auxiliary springs, 7 coil units, 714 side concave volumes, 715 bulge-structures, 716 fixed orifices, 717 pilot hole A, 718 pilot hole B, 719 pilot hole C, 723 projectioies, 733 projectioies, 74 splicing ears, 741 projectioies, 8 electric capacity, 81 pin A, 82 pin B, 9 electric capacity, 91 pin A, 92 pin B, 10 electric capacity, 101 pin A, 102 pin B.
Embodiment
Home appliance pressure transducer of the present utility model referring to Fig. 4, comprises gas lid 1, housing 2, diaphragm cell 3, set screw 4, main spring 5, auxiliary spring 6 and coil unit 7; Referring to Fig. 5, described diaphragm cell comprises barrier film 31, diaphragm plate 32, iron core 33, barrier film matches with the hole 321 on the diaphragm plate by deformable projection 311, has outer bullet pawl structure 322 of opening on the described diaphragm plate, iron core 33 is set in this bullet pawl structure, by the rebound effect that plays pawl iron core 33 is positioned on the diaphragm plate 32; Referring to Fig. 5, Fig. 6, Fig. 7, have positioning boss 23 and pilot hole 24 on the housing 2, have side concave volume 714, bulge-structure 715 and fixed orifice 716 on the skeleton 71, side concave volume 714 keeps coaxial with the locator card body 21 corresponding coil unit 7 and the housings 2 of making of housing, fixed orifice 716 is fixed on the positioning boss 23 of housing, the bulge-structure 715 of skeleton keeps interference fit with the pilot hole of housing 24, makes coil coaxial and be in stationary state with the housing maintenance; See Fig. 4, Fig. 5, has button hole 11 on the gas lid 1, inside has cylindrical shape guide way 12, housing 2 is pressed into gas lid 1, projection 22 on the housing matches with the button hole 11 that gas covers diaphragm cell is positioned in the gas lid, the air inlet side of barrier film is provided with auxiliary spring 6, auxiliary spring is set in the cylinder guide way 12 of gas lid, auxiliary spring one end overhead is in gas cover degree portion, and the other end is positioned on the barrier film 31, the diaphragm plate 32 arranged outside main springs 5 of diaphragm cell 3, one end of main spring 5 contacts with set screw 4, the screw thread 41 of set screw matches with the internal thread 25 of housing, and the other end of main spring 5 is arranged in the recess space 323 of diaphragm plate, keeps main spring 5 on the throne.
Embodiment two
Home appliance pressure transducer of the present utility model, referring to Fig. 6 a, have pilot hole A717 and pilot hole B718 on the described coil rack, the pilot hole A717 that the pin A81 of electric capacity A8 passes skeleton is connected with the projection 723 of initial terminal, and the pilot hole B718 that another pin B82 passes skeleton is connected with the projection 733 of end of a period terminal.Other structure is with embodiment one.
Embodiment three
Home appliance pressure transducer of the present utility model, referring to Fig. 6 b, increase on the described coil rack splicing ear 74 is set, electric capacity has two, be electric capacity A9 and electric capacity B10, the pilot hole A717 that the pin A91 of electric capacity A passes skeleton is connected with the projection 723 of initial terminal, the pilot hole C719 that another pin B92 passes skeleton is connected with the projection 741 of splicing ear, the pilot hole B718 that the pin A101 of electric capacity B passes skeleton is connected with the projection 733 of end of a period terminal, and the pilot hole C719 that another pin B102 passes skeleton is connected with the projection 741 of splicing ear.Other structure is with embodiment one.
Claims (3)
1. water level sensor for home appliance, comprise gas lid (1), housing (2), diaphragm cell (3), set screw (4), main spring (5) and coil unit (7), described diaphragm cell comprises barrier film (31), diaphragm plate (32) and iron core (33), barrier film matches with the hole (321) on the diaphragm plate by deformable projection (311), has outer bullet pawl structure (322) of opening on the described diaphragm plate, described iron core (33) is set in this bullet pawl structure, by the rebound effect that plays pawl iron core (33) is positioned on the diaphragm plate (32), it is characterized in that having on the described housing positioning boss (23) and pilot hole (24), has side concave volume (714) on the coil rack, bulge-structure (715) and fixed orifice (716), side concave volume (714) keeps coaxial with the corresponding coil unit (7) and the housing (2) of making of locator card body (21) of housing, the fixed orifice of skeleton (716) is fixed on the positioning boss (23) of housing, the bulge-structure of skeleton (715) keeps interference fit with the pilot hole (24) of housing, make coil and housing keep coaxial and be in stationary state, has button hole (11) on the gas lid (1), gas lid inside has cylindrical shape guide way (12), housing is pressed into the gas lid, projection on the housing (22) matches with the button hole (11) that gas covers diaphragm cell is positioned in the gas lid, the air inlet side of barrier film is provided with auxiliary spring (6), this auxiliary spring is set on the cylindrical shape guide way (12) of gas lid, auxiliary spring one end overhead is in gas lid bottom, the auxiliary spring other end is positioned on the barrier film (31), described main spring (5) is arranged at diaphragm plate (32) outside of diaphragm cell (3), one end of main spring (5) contacts with adjustment screw (4), the screw thread of set screw (41) matches with the internal thread (25) of housing, the other end of main spring (5) is arranged in the recess space (323) of diaphragm plate, keeps main spring (5) on the throne.
2. water level sensor for home appliance as claimed in claim 1, it is characterized in that having pilot hole A (717) and pilot hole B (718) on the skeleton of described coil unit, described electric capacity is electric capacity A (8), the pilot hole A (717) that the pin A (81) of this electric capacity passes skeleton is connected with the projection (723) of the initial terminal of coil, and the pilot hole B (718) that the pin B (82) of electric capacity A passes skeleton is connected with the projection (733) of coil end of a period terminal.
3. water level sensor for home appliance as claimed in claim 1, the skeleton that it is characterized in that described coil is provided with a splicing ear (74), described electric capacity is electric capacity A (9) and electric capacity B (10), the pilot hole A (717) that the pin A (91) of electric capacity A (9) passes skeleton is connected with the projection (723) of the initial terminal of coil, the pilot hole C (719) that the pin B (92) of electric capacity A passes skeleton is connected with the projection (741) of splicing ear, the pilot hole B (718) that the pin A (101) of electric capacity B (10) passes skeleton is connected with the projection (733) of coil end of a period terminal, and the pilot hole C (719) that the pin B (102) of electric capacity B passes skeleton is connected with the projection (741) of splicing ear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201184998U CN202066555U (en) | 2011-04-21 | 2011-04-21 | Water level sensor for household electric appliance equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201184998U CN202066555U (en) | 2011-04-21 | 2011-04-21 | Water level sensor for household electric appliance equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202066555U true CN202066555U (en) | 2011-12-07 |
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ID=45060416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201184998U Expired - Lifetime CN202066555U (en) | 2011-04-21 | 2011-04-21 | Water level sensor for household electric appliance equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202066555U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017774A (en) * | 2015-03-31 | 2016-10-12 | 伊利诺斯工具制品有限公司 | Sensor |
| CN106197603A (en) * | 2014-10-11 | 2016-12-07 | 伊利诺斯工具制品有限公司 | Pressure transducer |
| CN106978706A (en) * | 2017-05-12 | 2017-07-25 | 汪国庆 | A kind of compact water level sensor for being easy to assemble |
| CN110036263A (en) * | 2016-12-06 | 2019-07-19 | 爱三工业株式会社 | Level detection unit |
| 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 |
-
2011
- 2011-04-21 CN CN2011201184998U patent/CN202066555U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197603A (en) * | 2014-10-11 | 2016-12-07 | 伊利诺斯工具制品有限公司 | Pressure transducer |
| CN106017774A (en) * | 2015-03-31 | 2016-10-12 | 伊利诺斯工具制品有限公司 | Sensor |
| CN112781777A (en) * | 2015-03-31 | 2021-05-11 | 伊利诺斯工具制品有限公司 | Sensor with a sensor element |
| CN106017774B (en) * | 2015-03-31 | 2023-03-31 | 伊利诺斯工具制品有限公司 | Sensor with a sensor element |
| CN112781777B (en) * | 2015-03-31 | 2024-02-20 | 伊利诺斯工具制品有限公司 | Sensor for detecting a position of a body |
| CN110036263A (en) * | 2016-12-06 | 2019-07-19 | 爱三工业株式会社 | Level detection unit |
| CN110036263B (en) * | 2016-12-06 | 2021-02-09 | 爱三工业株式会社 | Liquid level detection unit |
| CN106978706A (en) * | 2017-05-12 | 2017-07-25 | 汪国庆 | A kind of compact water level sensor for being easy to assemble |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111207 |