CN105865584A - A liquid level sensor and a compressor with the same - Google Patents
A liquid level sensor and a compressor with the same Download PDFInfo
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- CN105865584A CN105865584A CN201510031384.8A CN201510031384A CN105865584A CN 105865584 A CN105865584 A CN 105865584A CN 201510031384 A CN201510031384 A CN 201510031384A CN 105865584 A CN105865584 A CN 105865584A
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- liquid level
- magnetic
- level sensor
- hole
- base
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Abstract
The invention provides a liquid level sensor and a compressor with the same. The liquid level sensor comprises a pedestal, a hollow guide pipe, a limiting member, a magnetic float and a magnetic-sensitive sensor assembly; the pedestal is provided with a through hole at the center; a first end of the hollow guide pipe is fixed to the upper portion periphery of the through hole of the pedestal; the limiting member is fixed to a second end of the hollow guide pipe; the magnetic float can be movably arranged on the outer wall of the hollow guide pipe in a sleeving manner, can rise and drop along with the liquid level and rises and drops between the limiting member and the pedestal in the axis direction of the hollow guide pipe; the magnetic-sensitive sensor assembly comprises a location part, a threaded part, a rod part and a magnetic induction core, wherein the location part is arranged on the outer side of the pedestal, the threaded part is integrally formed on one side of the location part and is threadedly connected with the through hole of the pedestal, the two ends of the rod part are connected with the threaded part and the magnetic induction core, and the rod part and the magnetic induction core extend into the hollow guide pipe via the through hole in the pedestal; the magnetic induction core of the magnetic-sensitive sensor assembly detects magnetic field position signals generated by rising and dropping of the magnetic float and converts the signals to electric signal output.
Description
Technical field
The present invention relates to a kind of liquid level sensor, particularly to a kind of magnetic float being arranged on bottom compressor
Liquid level sensor.
Background technology
In prior art, the magnetic float liquid level sensor in container (such as compressor) is floated by measuring staff, magnetic
Son and magnetic potential detection mechanism (magnetic float position detection mechanism) form.Magnetic float is to be fixed by permanent magnet ring
Making in the hollow ball (or bar-shaped) made with politef, magnetic float can be enclosed within liquid level by floating ground
On the measuring staff of sensor.Magnetic potential detection mechanism is inserted in the middle hole capital after selling all securities of measuring staff, induction of signal magnetic red sheet with
The part integration encapsulation such as magnetic float, measuring staff.Measuring staff is threaded connection the end being fixed on compressor housing
Portion.During measurement, being installed to the container by liquid level sensor in the way of being perpendicular to liquid level, magnetic float is along surveying
Bar lifts with liquid level change in container, and magnetic potential detection mechanism detects float position immediately, i.e. liquid level position.
Current magnetic float liquid level sensor is primarily present problems with:
(1), during compressor operating, lubricating oil is owing to often contacting with high-temperature medium or high-temperature metal surface
And it is in the condition of high temperature.But, existing magnetic float is generally made ball float by polytetrafluoroethylmaterial material, poly-
The heat-resisting ability of tetrafluoroethene material is not enough；
(2) measuring staff is connect with compressor housing by screw thread, may cause lubricating oil at housing screw
Reveal；And
(3) induction of signal magnetic red sheet and miscellaneous part integrative packaging, if induction of signal magnetic red sheet loses
Effect, it is difficult to change.
Summary of the invention
It is an object of the invention to provide a kind of liquid level sensor and there is the compressor of this liquid level sensor,
This liquid level sensor had both been prone to fix with container, was easy to again regulate float position according to liquid level demand, it is simple to
Dismounting, replacing magneto-dependent sensor assembly.
Another object of the present invention is to a kind of liquid level sensor is provided and there is the compression of this liquid level sensor
Machine, extends the whole service life of liquid level sensor.
According to an aspect of the present invention, it is provided that a kind of liquid level sensor, including:
One base, the central authorities of described base are provided with a through hole；
One hollow tubing conductor, the first end of described hollow tubing conductor is fixed on the top peripheral of the through hole of described base；
One locating part, is fixed on the second end of described hollow tubing conductor；
One magnetic float, described magnetic float is sheathed on described hollow tubing conductor outer wall, described magnetic float movably
Lifting with liquid level, the axis direction along described hollow tubing conductor lifts between described locating part and described base；
One magneto-dependent sensor assembly, described magneto-dependent sensor assembly include location division, threaded portion, bar portion and
Magnetic induction fuse；Described position point is in described chassis outer side；Described threaded portion is integrally formed at described
Side, location division, and be spirally connected with the through hole of described base；The two ends in described bar portion connect described screw thread respectively
Portion and magnetic induction fuse, described bar portion and magnetic induction fuse stretch into described hollow lead from the through hole of described base
In pipe；
The magnetic field that the magnetic induction fuse detection of described magneto-dependent sensor assembly is caused by the lifting of described magnetic float
Position signalling, and it is converted into signal of telecommunication output.
Preferably, the cross section of described base is circular, and the outer edge of described base is provided with to described hollow
The annular sidewall that conduit opposite side extends.
Preferably, described base is carbon steel base.
Preferably, the first end of described hollow tubing conductor is integrated with the top peripheral of the through hole of described base even
Connect.
Preferably, described locating part is that annular extends out shoulder.
Preferably, the diameter of described location division is more than the aperture of described through hole.
Preferably, described threaded portion is the external screw thread shoulder thicker than described bar portion；Or, described threaded portion
It it is the external screw thread being set directly on the lower end outer surface in described bar portion.
Preferably, described magnetic float is the metal ball float that inside is provided with permanent-magnetic clamp, and described metal ball float
It is additionally provided with center through hole, described permanent-magnetic clamp surrounding said central through hole.
Preferably, the material of described metal ball float is rustless steel.
According to another aspect of the present invention, also provide for a kind of compressor, hold in the lower house of this compressor
Carrying lubricating oil, including above-mentioned liquid level sensor, the lower house of described compressor is provided with installing hole, described
Liquid level sensor is in being installed on described installing hole in the described lubricating oil of described hollow tubing conductor immersion, and described magnetic floats
Son lifts with the liquid level of lubricating oil, and the magnetic induction fuse detection of described magneto-dependent sensor assembly is floated by described magnetic
The magnetic field position signal that son lifts and causes, and it is converted into the signal of telecommunication output of the liquid level representing lubricating oil.
Preferably, described base and described installing hole welded seal.
Owing to employing above technology, the liquid level sensor of the present invention uses understructure and magnetosensitive sensing
Device assembly is connect with base by screw thread, has both been prone to fix, the most just with container (such as compressor housing)
In regulating float position according to liquid level demand, it is simple to dismantle, change magneto-dependent sensor assembly；
Hollow tubing conductor in liquid level sensor of the present invention is the through hole that integration is fixedly connected on carbon steel base
Top peripheral, so when in hollow tubing conductor dip lubrication oil, there is no lubricating oil inside hollow tubing conductor, this
Sample can adequately protect the magnetic induction fuse being contained within hollow tubing conductor, extends the whole of liquid level sensor
Body service life；And, magnetic float is metal ball float, and it can be high temperature resistant, is more suitable for detection compression
High temperature lubricating oil liquid level in machine, it helps extend the whole service life of liquid level sensor.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, technical scheme is described in detail, so that
Characteristic and the advantage of the present invention become apparent from.
Fig. 1 be the present invention liquid level sensor in the sectional view of magneto-dependent sensor assembly；
Fig. 2 is that the liquid level sensor of the present invention is installed on the profile bottom compressor；
Profile when Fig. 3 is that in Fig. 2, lubricant in compressor is in low oil level；And
Profile when Fig. 4 is that in Fig. 2, lubricant in compressor is in high oil level.
Reference
1 magneto-dependent sensor assembly
11 location divisions
12 threaded portions
13 bar portions
14 magnetic induction fuses
2 hollow tubing conductors
3 locating parts
4 bases
41 annular sidewalls
5 metal ball floats
6 lower houses
61 installing holes
A lubricating oil liquid level
The B metal ball float direction of motion
Detailed description of the invention
Hereinafter embodiments of the invention will be provided detailed description.Although the present invention will be concrete in conjunction with some
Embodiment is illustrated and illustrates, but it is real to it should be noted that the present invention is not merely confined to these
Execute mode.On the contrary, the amendment carrying out the present invention or equivalent, all should contain the power in the present invention
In the middle of profit claimed range.
It addition, in order to better illustrate the present invention, detailed description of the invention below gives numerous
Detail.It will be understood by those skilled in the art that do not have these details, the present invention is the most real
Execute.In other example, known structure and parts are not described in detail, in order to
Highlight the purport of the present invention.
First embodiment
As depicted in figs. 1 and 2, the liquid level sensor of the present invention, including: magneto-dependent sensor assembly 1,
Hollow tubing conductor 2, locating part 3, base 4 and magnetic float 5.
The central authorities of base 4 are provided with a through hole.The cross section of base 4 is circular, square or hexagon etc.,
But it is not limited, it is also possible to be other shapes.The outer edge of base 4 is provided with to hollow tubing conductor 2 contrary
The annular sidewall 41 extended in side.Compared with directly measuring staff being fixed on container bottom with prior art, this
Bright liquid level sensor uses understructure, it is easier to fix with container (such as compressor housing), Gu
Determining mode can be to be welding or other modes.In the present embodiment, base 4 is preferably carbon steel material, with
It is easier to weld with compressor housing.
First end of hollow tubing conductor 2 is fixed on the top peripheral of the through hole of carbon steel base 4.Hollow tubing conductor 2
The first end integrated with the top peripheral of the through hole of carbon steel base 4 connect, with realize better seal effect
Really.
Locating part 3 is fixed on the second end of hollow tubing conductor 2.In the present embodiment, spacing pieces 3 is ring
Shape extends out shoulder, but is not limited.
In the present embodiment, magnetic float 5 is metal ball float 5, is internally provided with permanent-magnetic clamp, and metal
Ball float 5 is additionally provided with center through hole, and permanent-magnetic clamp is around center through hole, and metal ball float 5 is sheathed on movably
Hollow tubing conductor 2 outer wall.Metal ball float 5 lifts with liquid level, along the axis direction of hollow tubing conductor 2, in limit
Lift between position part 3 and carbon steel base 4.The material of the metal ball float 5 in the present invention can be rustless steel
Etc. metal material high temperature resistant, etch-proof, alloy material or mixing material etc., it is not limited.
Magneto-dependent sensor assembly 1 includes location division 11, threaded portion 12, bar portion 13 and magnetic induction fuse
14.Location division 11 can be provided with through hole to draw data wire, or, location division 11 is exactly a signal
Transmitter, the coffret exportable magnetic float position i.e. liquid level signal of signal from this signal transmitting device, but
It is not limited.
Location division 11 is positioned at outside base 4, and the cross section of location division 11 is circular, square or hexagon
Deng, but be not limited, it is also possible to it is other shapes.In the present embodiment, location division 11 is transversal
Face is circular, and its diameter is more than the aperture of through hole.Threaded portion 12 is integrally formed at side, location division 11,
In the present embodiment, threaded portion 12 is the external screw thread shoulder 12 thicker than bar portion 13, but not as
Limit, such as threaded portion 12 can also be the external screw thread being set directly on bar portion 13 lower end outer surface.Bar
The two ends in portion 13 connect external screw thread shoulder 12 and magnetic induction fuse 14 respectively.Bar portion 13 and magnetic induction core
Son 14 stretches in hollow tubing conductor 2 from the through hole of carbon steel base 4, external screw thread shoulder 12 and carbon steel base 4
Through hole be spirally connected.The position that magnetic induction fuse 14 is in hollow tubing conductor 2 may decide that the ginseng of lubricating oil
Examine liquid level.Further, by the length in adjusting lever portion 13, can be according to the lubricating oil of different compressors
Position requires that controlling magnetic induction fuse 14 is in the position in hollow tubing conductor 2.Such as, longer with changing one
Bar portion 13 so that magnetic induction fuse 14, higher than original position, increases the reference liquid adjusting lubricating oil
Position；Or, by precession or the screw thread screwing out threaded portion 12, it is also possible to fine setting magnetic induction fuse
14 positions in hollow tubing conductor 2, in order to adjust the reference level of lubricating oil, but be not limited.Magnetic
The magnetic induction fuse 14 of dependent sensor assembly 1 detects the magnetic field position lifted and cause by metal ball float 5
Signal, and it is converted into signal of telecommunication output.
As in figure 2 it is shown, the present invention also provides for a kind of compressor with above-mentioned liquid level sensor, this compression
Carrying lubricating oil in the lower house 6 of machine.Compressor includes that above-mentioned liquid level sensor, lower house 6 are provided with
One installing hole 61 (owing to liquid level sensor has been arranged in installing hole 61, therefore the district of installing hole 61
Territory is blocked), liquid level sensor is installed in installing hole 61.Carbon steel base 4 welds with installing hole 61
Seal, be by the outside of the annular sidewall 41 of carbon steel base 4 and installing hole 61 in the present embodiment
Wall welded seal.Metal ball float 5 lifts with lubricating oil liquid level A, the magnetic induction of magneto-dependent sensor assembly 1
Fuse 14 detects the magnetic field position signal lifted and cause by metal ball float 5, and is converted into expression lubrication
The signal of telecommunication output of the liquid level of oil.
Owing to hollow tubing conductor 2 is the top peripheral that integration is fixedly connected on the through hole of carbon steel base 4, institute
With when in hollow tubing conductor 2 dip lubrication oil, hollow tubing conductor 2 is internal and between the lubricating oil of lower house 6
Sealing, hollow tubing conductor 2 is internal does not has lubricating oil, and so can adequately protect is contained in hollow tubing conductor 2
The magnetic induction fuse 14 in portion, extends the whole service life of magnetic float liquid level sensor.
Additionally, due to magneto-dependent sensor assembly 1 be stretch in the way of the through hole with base 4 is spirally connected hollow
In conduit 2, thus when initially installing, it is simple to require to adjust according to the lubricating oil liquid level of different compressors
The position of joint magnetic induction fuse 14, and when magnetic induction fuse 14 breaks down, it is also possible to revolve easily
Go out magneto-dependent sensor assembly 1, the magnetic induction fuse 14 being susceptible to fault is overhauled, or directly replaces
Change another good magneto-dependent sensor assembly 1.
The liquid level sensor of the employing present invention is when compressor operating, if as it is shown on figure 3, in compressor
Lubricating oil liquid level A declines, and metal ball float 5 is with lubricating oil liquid level A, along the decline of B direction, now,
The magnetic induction fuse 14 of magneto-dependent sensor assembly 1 detects magnetic field position signal, and is converted into expression lubrication
The signal of telecommunication output of the liquid level of oil.Being hindered by carbon steel base 4 when dropping to certain altitude of metal ball float 5
Gear protection.
As shown in Figure 4, if the lubricating oil liquid level A in compressor rises, metal ball float 5 is with lubricating oil
Face A, rising along on B direction, now, the magnetic induction fuse 14 of magneto-dependent sensor assembly 1 detects magnetic
Field position signalling, and it is converted into the signal of telecommunication output of the liquid level representing lubricating oil.The rising of metal ball float 5
Protection can be stopped by limited part 3 to during certain altitude.
The compressor of the present invention can also arrange alarm unit, alarm unit monitoring magneto-dependent sensor assembly 1
The signal of magnetic induction fuse 14, in the lubricating oil liquid level A (profit determined relative to magnetic induction fuse 14
Lubricating oil is with reference to liquid level) too high or too low time report to the police.
In summary, the liquid level sensor of the present invention can high temperature resistant and be prone to and compressor housing weldering
Connecing, the magneto-dependent sensor assembly in the present invention is connect by screw thread and ball float base, it is achieved detachable, can
Change, extend the whole service life of magnetic float liquid level sensor.
Claims (11)
1. a liquid level sensor, it is characterised in that including:
One base (4), the central authorities of described base (4) are provided with a through hole；
One hollow tubing conductor (2), the first end of described hollow tubing conductor (2) is fixed on described base (4)
The top peripheral of through hole；
One locating part (3), is fixed on the second end of described hollow tubing conductor (2)；
One magnetic float (5), described magnetic float (5) is sheathed on described hollow tubing conductor (2) movably
Outer wall, described magnetic float (5) lifts with liquid level, along the axis direction of described hollow tubing conductor (2) in institute
State and lift between locating part (3) and described base (4)；
One magneto-dependent sensor assembly (1), described magneto-dependent sensor assembly (1) include location division (11),
Threaded portion (12), bar portion (13) and magnetic induction fuse (14)；Described location division (11) is positioned at institute
State base (4) outside；Described threaded portion (12) is integrally formed at described location division (11) side,
And be spirally connected with the through hole of described base (4)；The two ends of described bar portion (13) connect described screw thread respectively
Portion (12) and magnetic induction fuse (14), described bar portion (13) and magnetic induction fuse (14) are from described
The through hole of base (4) stretches in described hollow tubing conductor (2)；
The magnetic induction fuse (14) of described magneto-dependent sensor assembly (1) detects by described magnetic float (5)
The magnetic field position signal lifted and cause, and it is converted into signal of telecommunication output.
2. liquid level sensor as claimed in claim 1, it is characterised in that the horizontal stroke of described base (4)
Cross section is circular, and the outer edge of described base (4) is provided with prolongs to described hollow tubing conductor (2) opposite side
The annular sidewall (41) of exhibition.
3. liquid level sensor as claimed in claim 2, it is characterised in that described base (4) is carbon
Steel base.
4. liquid level sensor as claimed in claim 1, it is characterised in that described hollow tubing conductor (2)
The first end integrated with the top peripheral of the through hole of described base (4) connect.
5. liquid level sensor as claimed in claim 1, it is characterised in that described locating part (3) is
Annular extends out shoulder.
6. liquid level sensor as claimed in claim 1, it is characterised in that described location division (11)
Diameter more than the aperture of described through hole.
7. liquid level sensor as claimed in claim 1, it is characterised in that described threaded portion is than institute
State the external screw thread shoulder that bar portion is thick；Or, described threaded portion is to be set directly at outside the lower end in described bar portion
External screw thread on surface.
8. liquid level sensor as claimed in claim 1, it is characterised in that described magnetic float is internal
Be provided with the metal ball float of permanent-magnetic clamp, and described metal ball float (5) be additionally provided with center through hole, described forever
Magnet ring surrounding said central through hole.
9. liquid level sensor as claimed in claim 8, it is characterised in that described metal ball float (5)
Material be rustless steel.
10. a compressor, carrying lubricating oil in the lower house (6) of this compressor, it is characterised in that
Including liquid level sensor as claimed in any one of claims 1-9 wherein, the lower house (6) of described compressor
Being provided with installing hole (61), described liquid level sensor is described in being installed on described installing hole (61) hollow leads
Pipe (2) immerses in described lubricating oil, and described magnetic float (5) lifts with the liquid level of lubricating oil, described magnetic
Magnetic induction fuse (14) detection of dependent sensor assembly (1) is caused by the lifting of described magnetic float (5)
Magnetic field position signal, and be converted into represent lubricating oil liquid level the signal of telecommunication output.
11. compressors as claimed in claim 10, it is characterised in that described base (4) is with described
Installing hole (61) welded seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510031384.8A CN105865584A (en) | 2015-01-22 | 2015-01-22 | A liquid level sensor and a compressor with the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510031384.8A CN105865584A (en) | 2015-01-22 | 2015-01-22 | A liquid level sensor and a compressor with the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105865584A true CN105865584A (en) | 2016-08-17 |
Family
ID=56623120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510031384.8A Pending CN105865584A (en) | 2015-01-22 | 2015-01-22 | A liquid level sensor and a compressor with the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105865584A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106679767A (en) * | 2017-01-13 | 2017-05-17 | 北京航天金泰星测技术有限公司 | Magnetostrictive liquid level sensor and fixing device thereof |
| CN111103367A (en) * | 2019-12-20 | 2020-05-05 | 刘仲 | Liquid chromatography mobile phase bottle with liquid drying recognition device |
| CN111964754A (en) * | 2020-08-25 | 2020-11-20 | 芜湖联诺电器有限公司 | Liquid level sensor for special-shaped oil tank |
| CN115507030A (en) * | 2021-06-23 | 2022-12-23 | 丹佛斯商用压缩机公司 | Refrigerant compressor comprising a fuel level sensor device |
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| CN202066565U (en) * | 2011-05-20 | 2011-12-07 | 宋鹤林 | Magnet sensing-type oil-mass sensor |
| CN202066561U (en) * | 2011-04-20 | 2011-12-07 | 浙江嘉化能源化工股份有限公司 | Yellow phosphorus liquid level test meter |
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| US5295359A (en) * | 1992-09-21 | 1994-03-22 | National Refrigeration Products | Combination fluid level indicator and discharge device |
| CN2688897Y (en) * | 2004-02-26 | 2005-03-30 | 计高凌 | Oil-shortage preventer of air compressor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106679767A (en) * | 2017-01-13 | 2017-05-17 | 北京航天金泰星测技术有限公司 | Magnetostrictive liquid level sensor and fixing device thereof |
| CN111103367A (en) * | 2019-12-20 | 2020-05-05 | 刘仲 | Liquid chromatography mobile phase bottle with liquid drying recognition device |
| CN111964754A (en) * | 2020-08-25 | 2020-11-20 | 芜湖联诺电器有限公司 | Liquid level sensor for special-shaped oil tank |
| CN115507030A (en) * | 2021-06-23 | 2022-12-23 | 丹佛斯商用压缩机公司 | Refrigerant compressor comprising a fuel level sensor device |
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| CB02 | Change of applicant information |
Address after: 201206 Jinqiao Road, Pudong New Area Jinqiao Export Processing Zone, Shanghai, 1051 Applicant after: Shanghai Haili Electrical Appliance Co. Ltd. Address before: 201206 Pudong New Area Jinqiao Export Processing Zone, Nanjing Road, No. 888, Shanghai Applicant before: Rili Electric Appliance Co., Ltd., Shanghai |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160817 |
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| RJ01 | Rejection of invention patent application after publication |