CN201420584Y - Automatic warning device of oil filter - Google Patents
Automatic warning device of oil filter Download PDFInfo
- Publication number
- CN201420584Y CN201420584Y CN2009201169083U CN200920116908U CN201420584Y CN 201420584 Y CN201420584 Y CN 201420584Y CN 2009201169083 U CN2009201169083 U CN 2009201169083U CN 200920116908 U CN200920116908 U CN 200920116908U CN 201420584 Y CN201420584 Y CN 201420584Y
- Authority
- CN
- China
- Prior art keywords
- oil
- filter
- piston
- chamber enclosure
- filter chamber
- 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.)
- Expired - Lifetime
Links
- 239000003921 oil Substances 0.000 claims abstract description 90
- 239000010721 machine oil Substances 0.000 claims abstract description 27
- 230000003321 amplification Effects 0.000 claims abstract description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 4
- 239000000446 fuel Substances 0.000 claims description 15
- 230000001681 protective effect Effects 0.000 claims description 5
- 210000004907 gland Anatomy 0.000 claims description 4
- 208000002925 dental caries Diseases 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims description 2
- 238000001914 filtration Methods 0.000 abstract description 6
- 238000002485 combustion reaction Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000011045 prefiltration Methods 0.000 abstract 1
- 230000006872 improvement Effects 0.000 description 9
- 230000015556 catabolic process Effects 0.000 description 8
- 230000009467 reduction Effects 0.000 description 8
- 238000005461 lubrication Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000012535 impurity Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 239000012792 core layer Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Images
Landscapes
- Filtration Of Liquid (AREA)
Abstract
The utility model relates to automatic warning devices, and aims to provide an automatic warning device of an oil filter for an internal combustion engine. The automatic warning device comprises a machine oil cavity casing which is formed by butting a pre-filter machine oil cavity casing and a post-filter machine oil cavity casing; a spring and a piston are arranged in the machine oil cavity casing; two ends of the spring are fixed on the inner wall of the post-filter machine oil cavity casing and on the piston respectively; a cavity formed in each casing is divided into two non-communicated cavities through the piston; a sliding rod is arranged on the piston on the side mounted with the spring; one end of the sliding rod is fixedly connected to the piston, and the other end thereof penetrates the wall of the post-filter machine oil cavity casing and is connected with a sliding component on a potentiometer; the potentiometer is connected with a battery through a conducting wire to forma return circuit; and the return circuit is connected with a filtering amplification circuit, an A/D converting circuit and a warning circuit through a conducting wire in sequence. The automatic warning device can continuously display the operating conditions of the oil filter, and has the advantages of complete functions, reliable performance, good adaptability, simple structure, small volume, flexible arrangement, low manufacturing cost and easy popularization.
Description
Technical field
The utility model relates to a kind of autoalarm, particularly relates to the autoalarm of the oil filter that a kind of internal-combustion engine uses.
Technical background
Oil filter is undertaken the filtration of engine lubrication system medium, guarantees to start function to run well, and plays the effect of raising the efficiency, prolonging running life.Oil filter is the important composition parts of lubrication system.The function of lubrication system is exactly to continue to provide clean machine oil to the rubbing surface of each relative movement part of motor, and forms oil film between friction surface, realizes liquid friction, with the durability that reaches engine operation and the purpose of reliability.Lubrication system plays and important effect for the proper functioning that guarantees motor.Machine oil flow back into oil sump through behind each rubbing surface, wherein will contain various metal filings, mechanical admixture and oil ageing thing, if these impurity enter lubrication system with logical machine oil, with the wearing and tearing of aggravation engine part, also may stop up oil pipe or oil duct.The effect of oil filter is fallen these contaminant filters exactly, and the temperature that reduces component simultaneously plays cooling action.
After work a period of time, the impurity that gathers on the oil filter filter layer will get more and more, and the oil pressure pressure reduction before and after filtering will become greatly, and the machine oil that enters body reduces gradually.Motor will be because of lacking the lubricated negative condition such as surface friction drag increases, noise increases, some component temperature is too high, wearing and tearing aggravation, consumed power of whole machine increase that cause.Stop up the situation that causes oil-break not lubricate for fear of filter cleaner occurring, bypass valve is opened after pressure reduction reaches certain threshold value, and machine oil directly enters body without filter core.In order in time to find this stopping state, often all loaded onto obstruction alarm device on the oil filter now, after filter core both sides pressure reduction reaches certain value, trigger and report to the police, so that the driver can in time clean or renew cartridge more.
Yet it is to stop up the even more serious failure mode of failure consequence than filter cleaner that the breakdown or bonding place, border of filter cleaner filter layer is damaged.This moment, machine oil can be without filtering the unresisted lubrication system that directly enters, because the existence of impurity in the machine oil, may cause some oilhole to stop up, lose adverse effects such as lubrication effect, so not only can cause some above-mentioned counter productives, even can cause dangerous situations such as engine flame out, scuffing of cylinder bore, piston sintering.
Requirement along with the motor high power density, the working strength of motor is further strengthened, the operating conditions of machine oil is more abominable, increase along with service time in the machine oil that refluxes will comprise more metal fragment, some of them even reach very big particle radius, because the filter core layer is very thin, metal fragment damages filter core possibly; Simultaneously, along with the further enhancing of engine operation intensity, oil pump need pump the lubricated and cooling of more machine oil for motor under the identical operating conditions, will cause bigger pressure surge like this, cause a certain moment pressure excessive, the part distortion even the damage of some fragility of filter core are broken; Moreover the bonding place, border that individual difference can cause some element of oil filter is not because bonding firm or be immersed in for a long time and occur softening damage or the like situation in the high temperature oil.The existence of above-mentioned situation can cause oil filter not reach obstruction as yet puncture has just taken place, and brings great danger for the normal reliable operation of motor.
But present alarm device of oil filter only has the function of the warning of stopping up, and the consequence of ignoring the breakdown situation of filter core and bringing.The purpose of this utility model is exactly under above-mentioned technical background, designs a kind of alarm device of oil filter that has warning of stopping up and function of breakdown alarm simultaneously.
The model utility content
The purpose of this utility model is in order to fill up the blank of prior art, to remedy the deficiency of existing alarm device of oil filter, provide a kind of and can reflect oil filter runnability and make the warning device that stops up or puncture prompting comprehensively.
In order to reach the purpose of this utility model, the utility model provides a kind of automatic alarm of oil filter device, comprise the machine oil cavity shell that is provided with preceding fuel inlet of filter and filter back fuel inlet, the machine oil cavity shell is made up of oil before filter chamber enclosure and the butt joint of oil after filter chamber enclosure, and fuel inlet and filter back fuel inlet lay respectively on oil before filter chamber enclosure and the oil after filter chamber enclosure before the filter; One spring and a piston are arranged in the machine oil cavity shell, and both ends of the spring is separately fixed on the inwall and piston in oil after filter chamber, and the cavity that piston forms two enclosure is divided into mutually not two cavitys of UNICOM; The side that spring has been installed at piston is provided with sliding bar, and sliding bar one end is cemented on the piston, and the other end passes the wall of oil after filter cavity shell and is connected with slide member on the potentiometer; Potentiometer and battery are connected to form the loop by lead, and the loop links to each other by lead successively with filter amplification circuit, A/D change-over circuit, warning circuit.
As a kind of improvement, described piston with the contacted piston of the inwall outer ring of oil before filter chamber enclosure and oil after filter chamber enclosure on be arranged with seal groove, built-in seal ring.
As a kind of improvement, described oil before filter chamber enclosure is connected by bolt fastener with the oil after filter chamber enclosure.
As a kind of improvement, described oil before filter chamber enclosure and oil after filter chamber enclosure joint are provided with seal ring.
As a kind of improvement, ring is established the piston limit structure on the inwall of described oil before filter chamber enclosure or oil after filter chamber enclosure.
As a kind of improvement, the described oil before filter chamber enclosure end face relative with the oil after filter chamber enclosure extends inward, as the limit structure of piston.
As a kind of improvement, be provided with stuffing box gland between described sliding bar and the filter after-burning cavity shell.
As a kind of improvement, described A/D change-over circuit also connects a display screen.
As a kind of improvement, described warning circuit comprises micro-control unit, drive circuit, relay, tutorial light and buzzer.
As a kind of improvement, also has a protective resistance in the described loop.
The beneficial effects of the utility model are:
1, the alarm device of oil filter that provides of the utility model can continue to show the working state of oil filter, and the driver is had at fingertips to the working state of oil filter.
2, this alarm device of oil filter complete function.Warning device different from the past only provides and stops up the warning simple function, and this device had both had the obstruction warning function, also had function of breakdown alarm, guarantees that the driver can correctly understand the working condition of oil filter.
3, this alarm device of oil filter acoustooptic alarm simultaneously after reaching alarm threshold value and triggering guarantees that the driver can in time understand the working condition of oil filter.
4, this alarm device of oil filter reliable performance.Warning device adopts eliminator that the current signal that collects is carried out filtering, guarantee to get rid of warning device in the dither burr undesired signal that some cas fortuit (as engine oil pressure fluctuation, Vehicular vibration etc.) produces down, avoid occurring the situation that these undesired signals lead to errors and report to the police.
5, this alarm device of oil filter adaptability is good.Different oil filter is to have different obstructions and breakdown threshold, and the micro-control unit that the utility model adopts can be provided with different oil filter and come corresponding obstruction and breakdown threshold, judges whether filter cleaner arrives alarm limit.
6, this alarm device of oil filter is simple in structure, and volume is little, and flexible arrangement, and low cost of manufacture are easy to promote.
Description of drawings
Fig. 1 is the structural representation of the utility model signal generating unit;
Fig. 2 is a signal processing circuit block diagram of the present utility model.
Among the figure: fuel inlet 1 before the filter, fuel chamber shell 2 before the filter, bolt fastener 3, seal ring 4; filter after-burning cavity shell 5, filter back fuel inlet 6, motion bar 7; potentiometer 8, potentiometer wiring point 9, lead 10; potentiometer wiring point 11, protective resistance 12, stuffing box gland 13; spring 14, filter back fuel chamber 15, battery 16; seal ring 17, piston 18, fuel chamber 19 before the filter.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail:
As shown in Figure 1 and Figure 2, the oil filter in the present embodiment comprises signal generating unit and two parts of signal processing circuit.Wherein the former comprises machine oil cavity shell, potentiometer 8, battery 16,12 4 parts of protective resistance, and the latter comprises filter amplification circuit, A/D change-over circuit, display screen, four parts of warning circuit, and each several part links to each other with lead successively.
As shown in Figure 1, the machine oil cavity shell comprises that by oil before filter chamber enclosure 2 and 5 two housings of oil after filter chamber enclosure one machine oil import 1,6 is arranged respectively on both.One seal ring 4 is arranged between the housing 2,5, and three bolt fasteners 3 by circumference uniform distribution are linked together, and innerly form a cavity.One spring 14 and a piston 18 are arranged in the machine oil cavity shell, spring 14 two ends are separately fixed on housing 5 and the piston 18, there are two seal rings 17 piston 18 outer rings, the cavity that two enclosure are coordinated is divided into mutually not two cavitys 15,19 of UNICOM, and piston 18 can horizontally slip in oil after filter chamber 15.In addition, one side of piston 18 is provided with sliding bar 7, sliding bar 7 one ends are cemented on the piston 18, the other end passes the wall of oil after filter cavity shell 5 and is connected with slide member on the potentiometer 8, one stuffing box gland 13 is arranged between motion bar and shell wall, like this, the resistance of potentiometer 8 will change with moving of piston 18.Potentiometer 8, battery 16, protective resistance 12 usefulness leads 10 are connected to form the loop successively, produce current signal.
As shown in Figure 2, the warning circuit in the signal processing circuit comprises micro-control unit, drive circuit, relay, tutorial light and buzzer.Because the design of circuit each several part is easy to do for present technique field personnel, does not need to pay creative work, therefore no longer describes in detail.
Because there is resistance in filter core, so the oil pressure of fuel chamber 19 is greater than the oil pressure of filter back, the right fuel chamber 15 before the filter of piston 18 left sides, if both pressure reduction are Δ P, under the effect of differential pressure action power, piston 18 moves right, when differential pressure action power with after the reaction force of spring 14 equates, piston 18 is in stable position, the fixed motion bar 7 of this moment and piston 18 promotes the stable resistance that is in that slide members make potentiometer 8, exports a stable current signal I.By the appropriate design circuit, can make current signal I become the positive correlation one-to-one relationship with pressure differential deltap P.If pressure reduction is Δ P during the oil filter proper functioning
b, corresponding current signal I
b, along with the increase of operating time, the impurity that gathers on the filter core is more and more, and the filter core resistance increases, and pressure reduction also increases, when increasing all threshold value Δ P
aThe time can think that oil filter stopped up, this moment, corresponding current was I
a, as seen, Δ P
a＞Δ P
b, I
a＞I
bIn like manner, when oil filter was breakdown, the machine oil just non-resistance ground, border of the perforation by filter core or damage had lacked the resistance of filter core by filter cleaner, and pressure reduction at this moment will reduce, when pressure reduction less than a certain threshold value Δ P
cThe time just can think that filter cleaner is breakdown, this moment corresponding I
c, as seen, Δ P
b＞Δ P
c, I
b＞I
cAt different oil filter, different threshold value I can be set in the micro-control unit in signal processing circuit
a, I
c
Under working condition, behind the current signal process filtering amplified current of signal generating unit collection, form stable digital signal, through outputing to display screen and warning circuit simultaneously behind the A/D change-over circuit.Digital signal is input in the micro-control unit and compares I with the threshold value that presets
a, I
c, output command signal triggers drive circuit when reaching threshold value, thus relay closes, tutorial light bright and simultaneously buzzer report to the police simultaneously.
At last, it is also to be noted that what more than enumerate only is a kind of specific embodiment framework with alarm device of oil filter.Obviously, the utility model is not limited to above embodiment, and for example the end face reality of shell is not must be discrepant, and inner chamber specification of the same size also can be arranged, and piston is all removable at random position; Can on the inwall of shell, encircle separately and establish the piston limit structure, perhaps not establish.All distortion that those of ordinary skill in the art can directly derive or associate from the disclosed content of the utility model all should be thought protection domain of the present utility model.
Claims (10)
1, a kind of automatic alarm of oil filter device, comprise the machine oil cavity shell that is provided with preceding fuel inlet of filter and filter back fuel inlet, it is characterized in that, the machine oil cavity shell is made up of oil before filter chamber enclosure and the butt joint of oil after filter chamber enclosure, and fuel inlet and filter back fuel inlet lay respectively on oil before filter chamber enclosure and the oil after filter chamber enclosure before the filter; One spring and a piston are arranged in the machine oil cavity shell, and both ends of the spring is separately fixed on the inwall and piston in oil after filter chamber, and the cavity that piston forms two enclosure is divided into mutually not two cavitys of UNICOM; The side that spring has been installed at piston is provided with sliding bar, and sliding bar one end is cemented on the piston, and the other end passes the wall of oil after filter cavity shell and is connected with slide member on the potentiometer; Potentiometer and battery are connected to form the loop by lead, and the loop links to each other by lead successively with filter amplification circuit, A/D change-over circuit, warning circuit.
2, automatic alarm of oil filter device according to claim 1 is characterized in that, described piston with the contacted piston of the inwall outer ring of oil before filter chamber enclosure and oil after filter chamber enclosure on be arranged with seal groove, built-in seal ring.
3, automatic alarm of oil filter device according to claim 1 is characterized in that, described oil before filter chamber enclosure is connected by bolt fastener with the oil after filter chamber enclosure.
4, automatic alarm of oil filter device according to claim 1 is characterized in that, described oil before filter chamber enclosure and oil after filter chamber enclosure joint are provided with seal ring.
5, automatic alarm of oil filter device according to claim 1 is characterized in that, ring is established the piston limit structure on the inwall of described oil before filter chamber enclosure or oil after filter chamber enclosure.
6, automatic alarm of oil filter device according to claim 1 is characterized in that, the described oil before filter chamber enclosure end face relative with the oil after filter chamber enclosure extends inward, as the limit structure of piston.
7, automatic alarm of oil filter device according to claim 1 is characterized in that, is provided with stuffing box gland between described sliding bar and the filter after-burning cavity shell.
8, automatic alarm of oil filter device according to claim 1 is characterized in that, described A/D change-over circuit also connects a display screen.
9, automatic alarm of oil filter device according to claim 1 is characterized in that, described warning circuit comprises micro-control unit, drive circuit, relay, tutorial light and buzzer.
10, automatic alarm of oil filter device according to claim 1 is characterized in that, also has a protective resistance in the described loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201169083U CN201420584Y (en) | 2009-03-31 | 2009-03-31 | Automatic warning device of oil filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201169083U CN201420584Y (en) | 2009-03-31 | 2009-03-31 | Automatic warning device of oil filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201420584Y true CN201420584Y (en) | 2010-03-10 |
Family
ID=41807236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201169083U Expired - Lifetime CN201420584Y (en) | 2009-03-31 | 2009-03-31 | Automatic warning device of oil filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201420584Y (en) |
-
2009
- 2009-03-31 CN CN2009201169083U patent/CN201420584Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100310 Effective date of abandoning: 20090331 |