CN210106043U - Diesel filter integrating electronic heating and oil return heat utilization - Google Patents

Abstract

A diesel filter integrating electronic heating and oil return heat utilization belongs to the technical field of diesel engines. The diesel filter integrating electronic heating and oil return heat utilization comprises a filtering mechanism and a cup body mechanism which are sealed through a sealing element; the filtering mechanism comprises a filter tank and a cover plate assembly fixed on the filter tank, wherein a filter element is arranged in the filter tank, an oil inlet pipe, an oil outlet pipe and an oil return pipe are fixed on the cover plate assembly, the oil inlet pipe and the oil return pipe are communicated with the filter tank through a steering valve, and a temperature control steering structural member for controlling the conduction of the oil inlet pipe and the oil return pipe with the filter tank is arranged in the steering valve; the cup body mechanism comprises an electronic heating module and a temperature controller which are coupled in series. The utility model is additionally provided with the electronic heating module and the oil return pipe, and heats the oil in the filter tank before the engine is started under the low temperature condition, so that the high-grade diesel oil keeps the flow characteristic under the low temperature condition; after the engine is started, the oil return pipe introduces high-temperature oil return of the engine, so that the filter paper is prevented from being blocked by paraffin precipitated from low-temperature flowing diesel oil.

Description

Diesel filter integrating electronic heating and oil return heat utilization

Technical Field

The utility model relates to a diesel engine field's technique specifically is a diesel oil filter of integrated electronic heating and oil return heat utilization.

Background

With the development of the engine industry in China and the increasing enhancement of the environmental awareness, diesel engines are used more and more frequently on various vehicles in the market. The diesel oil is used as a daily fuel with the highest energy density, the compression ratio is high, the thermal efficiency is good, the energy density is higher than that of gasoline by more than 10%, and the thermal efficiency can reach 45% at most. Therefore, compared with a gasoline engine, the diesel engine with the same number of rows has lower oil consumption and better economical efficiency. However, diesel oil becomes turbid in a low-temperature environment, viscosity increases, fluidity and atomization effect become poor, and phenomena of wax precipitation and icing occur in a filter, so that a filter screen, a pipeline and the like are blocked, and faults such as difficulty in starting are caused. With the upgrading of the emission of the diesel engine and the increasing demand of users for driving comfort, a host factory needs to solve the problems that the diesel engine is long in starting time or difficult to start in winter in cold weather.

The filter is a part which is sensitive to the precipitation of low-temperature paraffin in diesel oil in a low-pressure oil supply pipeline. After the engine is started, along with the flow of diesel oil, paraffin in the diesel oil can be intercepted by a filter material in the filter and accumulated on the surface of the filter material, so that the flow resistance of the filter is increased; under some severe oil conditions, the filter material of the filter can be seriously blocked, the engine is stopped, and the engine cannot be restarted after the engine is stopped. For the problems, at present, two solutions are mainly provided, one is to heat diesel oil in the process of flowing through an electronic heater, and the other is to introduce high-temperature return oil of an engine into an inner cavity of a filter so that paraffin precipitated at low temperature is dissolved in the diesel oil again. However, the power of the electronic heater in the first scheme is only about 250W generally, calculation and test are carried out according to the specific heat capacity of diesel oil and the working flow of the engine, the actual temperature rise of the diesel oil is found to be not more than 5 ℃, the paraffin precipitated at low temperature is not greatly helped to be dissolved in the diesel oil again, and the technical problems of filter blockage and engine flameout caused by paraffin precipitation cannot be solved. Although the second scheme can solve the technical problems of filter blockage and engine flameout caused by paraffin precipitation, the second scheme and the first scheme can not solve the common problem in the domestic market at present, namely the low-temperature cold start of high-grade diesel oil under the low-temperature condition, and the problem is very prominent in provinces such as Hebei, Henan, Shanxi and the like; in winter, these provincial gasoline stations are generally unable to supply diesel fuel No. 10, and can still only use diesel fuel No. 0 after the temperature is lower than zero, so that the engine cannot be started, and the complaints of end users are very large.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the aforesaid to prior art exists is not enough, provides an integrated electronic heating and oil return heat utilization's diesel oil filter.

The utility model discloses a realize through following technical scheme:

the utility model is provided with a filtering mechanism and a cup body mechanism, and the filtering mechanism and the cup body mechanism are sealed by a sealing element;

the filtering mechanism comprises a filter tank and a cover plate assembly fixed on the filter tank, wherein a filter element is arranged in the filter tank, an oil inlet pipe, an oil outlet pipe and an oil return pipe are fixed on the cover plate assembly, the oil inlet pipe and the oil return pipe are communicated with the filter tank through a steering valve, a temperature control steering structural member is arranged in the steering valve, and the oil inlet pipe, the oil return pipe and the filter tank are controlled to be communicated through the temperature control steering structural member;

an electronic heating module and a temperature controller which are coupled in series are arranged in the cup body mechanism, the temperature controller controls the on-off of a working circuit of the electronic heating module, and the electronic heating module is electrified to heat oil in the filter tank.

In some technical schemes, the temperature control steering structural part comprises a steel ball, a bimetallic strip and a bimetallic strip fixing seat, wherein the bimetallic strip fixing seat is installed in the oil inlet pipe, one end of the bimetallic strip is fixed in the bimetallic strip fixing seat, the other end of the bimetallic strip is supported with the steel ball, and the steel ball is arranged in the oil return pipe; the bimetallic strip has no deformation, the oil inlet pipe and the oil return pipe are both communicated with the filter tank, the bimetallic strip is deformed by heating, the oil return pipe is blocked by the falling of the steel ball, and the oil inlet pipe is communicated with the filter tank.

In some technical schemes, the cup body mechanism is provided with a water level sensor which is electrically connected with a driving computer and outputs a filtered water level warning alarm signal in the cup body mechanism.

Technical effects

Compared with the prior art, the utility model discloses following technological effect has:

1) an electronic heating module, an oil return pipe and a steering valve are additionally arranged; before the engine is started, oil in the filter tank is heated through the electronic heating module, so that high-grade diesel oil keeps the flow characteristic under the low-temperature condition, and the diesel oil with the number 0 can be used for smooth starting under the condition of-10 ℃; after the engine is started, the oil return pipe starts to introduce high-temperature oil return of the engine, so that the filter paper is prevented from being blocked by paraffin precipitated from low-temperature flowing diesel oil, and the starting and running problems of high-grade diesel oil of a terminal user under a low-temperature condition are solved; in addition, the introduction of high-temperature oil return avoids the need of repeatedly conducting and heating the electronic heating module, thereby prolonging the service life of the electronic heating module and fully utilizing the heat efficiency of the engine;

2) the electronic heating module is conveniently controlled to work by additionally arranging the temperature controller, the control is automatic, manual operation is not needed, and the influence of human factors is reduced;

3) the modularized heating rod combination can realize different heating efficiencies by adjusting the number of the heating rods and the power of the built-in PCT heating sheet, and meet different customer requirements;

4) the cup body mechanism integrates electronic heating, a temperature sensor and water level alarming and is arranged at the bottom of the filter tank, so that the space is saved;

5) the thermal efficiency is high, and the heating methods is embedded, has avoided the extravagant drawback of external heating device heat, has improved the heat utilization efficiency of oil circuit heating.

Drawings

FIG. 1 is a schematic view of the entire structure of embodiment 1;

FIG. 2 is a schematic view of a filter mechanism according to embodiment 1;

FIG. 3 is an enlarged view of a portion of the diverter valve of FIG. 2;

FIG. 4a is a schematic diagram illustrating the operation of the steering valve of FIG. 3 in a normally open state;

FIG. 4b is a schematic view of the operation of the steering valve of FIG. 3 in a closed state;

FIG. 5a is a schematic structural view of a cup body mechanism in embodiment 1;

FIG. 5b is a top view of the structure of the cup body in example 1;

FIG. 6 is a wiring diagram of an electronic heating module and a thermostat in example 1;

FIG. 7 is a schematic view of a working hydraulic circuit for the return oil heating of embodiment 1;

in the figure: the device comprises a filtering mechanism 1, a cup body structure 2 and a rectangular sealing ring 3;

the device comprises a filter tank 11, a cover plate component 12, a filter element 13, an oil inlet pipe 14, an oil outlet pipe 15, an oil return pipe 16, a steering valve 17, an O-shaped ring 18, an electronic heating module 21, a temperature controller 22, a connector 23, a power supply 24, a fuse 25, an ignition switch 26, a water level sensor 27, an oil tank 28, a high-pressure pump 29, an oil delivery pump 30, an oil rail 31 and an oil injector 32;

steel ball 171, bimetal piece 172, bimetal piece fixing seat 173.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Example 1

As shown in fig. 1, the present embodiment includes a filtering mechanism 1 and a cup body mechanism 2, a rectangular sealing ring 3 is arranged between the filtering mechanism 1 and the cup body mechanism 2, and the filtering mechanism 1 and the cup body mechanism 2 are hermetically connected by compressing the rectangular sealing ring 3; when needing to be changed, only need filter core and rectangle sealing washer 3 change among the mechanism 1 of filtering, other mechanisms and subassembly can use repeatedly.

As shown in fig. 2, fig. 3, fig. 4a and fig. 4b, the filtering mechanism 1 includes a filtering tank 11 and a cover plate assembly 12 fixed on the filtering tank 11, a filter element 13 is disposed in the filtering tank 11, an oil inlet pipe 14, an oil outlet pipe 15 and an oil return pipe 16 are fixed on the cover plate assembly 12, the oil inlet pipe 14 and the oil return pipe 16 are communicated with the filtering tank 11 through a steering valve 17, a temperature-controlled steering structural member is disposed in the steering valve 17, the temperature-controlled steering structural member includes a steel ball 171, a bimetal 172 and a bimetal fixing seat 173, the bimetal fixing seat 173 is mounted in the oil inlet pipe 14, one end of the bimetal 172 is fixed in the bimetal fixing seat 173, the other end of the bimetal is supported by the steel ball 171, and the; the bimetallic strip 172 has no deformation, the oil inlet pipe 14 and the oil return pipe 16 are both communicated with the filter tank 11, the bimetallic strip 172 is deformed by heating, the steel ball 171 falls to block the oil return pipe 16, and the oil inlet pipe 14 is communicated with the filter tank 11.

As shown in fig. 5a, 5b and 6, the cup body mechanism 2 comprises an electronic heating module 21 and a thermostat 22 coupled in series; the electronic heating module 21 heats the oil liquid in the filter tank 11, and the temperature controller 22 monitors the temperature of the oil liquid in the filter tank 11 to control the on-off of a working circuit of the electronic heating module 21; the temperature controller 22 is electrically connected with a connector 23, the connector 23 is fixed at the bottom of the cup body mechanism 2, the connector 23 is connected with an external circuit, and the external circuit is shown in figure 4 and comprises a power supply 24, a fuse 25 and an ignition switch 26; the ignition switch 26 is in a normally closed state within a few minutes before the diesel engine is started, the electronic heating module 21 is electrified to start working, the oil liquid in the filter tank 11 is continuously heated until the bimetallic strip which is closed and contacted by the temperature controller 22 is separated and disconnected due to different thermal expansion coefficients, and the circuit is broken to finish the oil liquid heating before the diesel engine is started; the problem that diesel oil in a filter tank is completely in a wax precipitation state to block a filter screen and a pipeline after the diesel engine is not started for a long time at low temperature is solved, and therefore the problem that the diesel engine is difficult to start at low temperature in a cold mode is solved.

In the embodiment, the number of the electronic heating modules 21 is preferably four, and a heating rod structure is adopted; in order to meet the requirements of different customers in practical application, the electronic heating control can be realized by adjusting the number of the heating rods and packaging PTC heating sheets with different heating powers in each heating rod.

In addition, the cup body mechanism 2 is provided with a water level sensor 27, and the water level sensor 27 is electrically connected with a driving computer to output a filtered water level warning alarm signal in the cup body mechanism; when the filtered water level in the cup body mechanism 2 reaches a certain height, the ECU is alarmed, and a driver is informed to drain water from the filter tank through the output of an alarm signal, so that the phenomenon that the excessive water enters the engine to cause large loss after being accumulated is avoided.

In this embodiment, after the engine is started at a low temperature, as shown in fig. 4a, the oil return pipe 16 is conducted, high-temperature diesel oil in the engine enters the canister 11 through the oil return pipe 16, and is mixed with low-temperature oil entering the canister 11 from the oil inlet pipe 14, and the mixing ratio is realized by controlling the upper and lower positions of the steel ball 171 according to the degree of thermal deformation of the bimetallic strip 172, so as to ensure that the temperature of the oil in the canister is always at a higher temperature, and then the oil is discharged from the oil outlet pipe 15, so that continuous oil supply to the engine is realized, and the fault that the oil in the canister stalls due to low; when the oil return pipe 16 is conducted, the high-temperature diesel oil return oil flows into the filter tank 11, the temperature of the oil in the filter tank 11 is heated, and the flow resistance of the oil outlet pipe 15 is reduced, as shown in fig. 7; as shown in fig. 4b, after the temperature of the diesel oil flowing through the oil inlet pipe 14 rises to a certain temperature, for example, 45 ℃, the bimetallic strip 172 is heated and deformed, the steel ball 171 descends to the lowest position to block the oil return pipe 16, and only the oil inlet pipe 14 is communicated with the canister 11;

the above technical effects are further embodied in the diesel hydraulic circuit of fig. 7, when the present embodiment is in a low temperature condition, for example, the temperature is less than 0 ℃, the steering valve 17 in the filtering mechanism 1 is turned on, the high temperature return oil of the pressure pump 29, the oil rail 31 and the oil injector 31 flows to the position D through the position E and enters the filtering mechanism 1, the oil delivery pump 30 continuously sucks the oil liquid after high and low temperature mixing (the low temperature oil liquid at the position a and the high temperature return oil at the position D) from the filtering mechanism 1, and the oil liquid passes through the high pressure pump 29 and enters the oil rail 31 and the oil injector 32; with the continuous increase of the temperature of the whole oil, for example, the temperature of the oil at the position A is higher than 45 ℃, the steering valve 17 in the filter mechanism 1 is closed, and at the moment, the high-temperature return oil from the high-pressure pump 29, the oil rail 31 and the oil injector 31 all flows to the position C and enters the oil tank.

It is to be emphasized that: the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form, and any simple modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.

Claims (6)

1. A diesel filter integrating electronic heating and oil return heat utilization is characterized by being provided with a filtering mechanism and a cup body mechanism, wherein the filtering mechanism and the cup body mechanism are sealed through a sealing element;

the filter mechanism comprises a filter tank and a cover plate assembly fixed on the filter tank, wherein a filter element is arranged in the filter tank, an oil inlet pipe, an oil outlet pipe and an oil return pipe are fixed on the cover plate assembly, the oil inlet pipe and the oil return pipe are communicated with the filter tank through a steering valve, a temperature control steering structural member is arranged in the steering valve, and the oil inlet pipe, the oil return pipe and the filter tank are controlled to be communicated through the temperature control steering structural member;

the cup body mechanism is internally provided with an electronic heating module and a temperature controller which are coupled in series, the temperature controller controls the on-off of a working circuit of the electronic heating module, and the electronic heating module is electrified to heat oil in the filter tank.

2. The diesel filter integrating electronic heating and oil return heat utilization as claimed in claim 1, wherein the temperature-controlled steering structural member comprises a steel ball, a bimetallic strip and a bimetallic strip fixing seat, wherein the bimetallic strip fixing seat is installed in the oil inlet pipe, one end of the bimetallic strip is fixed in the bimetallic strip fixing seat, the other end of the bimetallic strip supports the steel ball, and the steel ball is arranged in the oil return pipe; the bimetallic strip has no deformation, the oil inlet pipe and the oil return pipe are both communicated with the filter tank, the bimetallic strip is deformed by heating, the oil return pipe is blocked by the falling of the steel ball, and the oil inlet pipe is communicated with the filter tank.

3. The diesel filter integrating electronic heating and oil return heat utilization of claim 1, wherein the temperature controller is provided with a bimetallic strip temperature sensing assembly, the bimetallic strips have different thermal expansion coefficients, and under a set temperature condition, the bimetallic strips are deformed by heating to be separated from each other, so that a working circuit of the electronic heating module is disconnected.

4. The integrated electronic heating and oil return heat utilization diesel filter of claim 1, wherein the cup body mechanism is provided with a connector, and the electronic heating module and the temperature controller coupled in series are electrically connected with the connector.

5. The diesel filter integrating electronic heating and oil return heat utilization of claims 1 or 4, wherein the electronic heating modules are provided in plurality, and adopt a heating rod structure, and PTC heating plates are sealed in the heating rod.

6. The diesel filter of claim 1 wherein the cup mechanism is provided with a water level sensor, the water level sensor is electrically connected to a vehicle computer and outputs a filtered water level alarm signal in the cup mechanism.

Images