CN210889170U - Fuel filter casing and fuel filter subassembly - Google Patents
Fuel filter casing and fuel filter subassembly Download PDFInfo
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- CN210889170U CN210889170U CN201921737973.8U CN201921737973U CN210889170U CN 210889170 U CN210889170 U CN 210889170U CN 201921737973 U CN201921737973 U CN 201921737973U CN 210889170 U CN210889170 U CN 210889170U
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Abstract
The utility model provides a fuel filter casing and fuel filter subassembly. Wherein, fuel filter casing includes: a fuel inlet provided on a wall of a fuel filter housing for introducing fuel into the fuel filter housing; the filter element accommodating cavity is arranged in the fuel filter shell, is positioned below the fuel inlet and is communicated with the fuel inlet, and is used for accommodating a first-stage filter element and a second-stage filter element; the electric fuel delivery pump accommodating cavity is arranged in the fuel filter shell, is positioned above the filter element accommodating cavity, is communicated with the filter element accommodating cavity and is used for accommodating the electric fuel delivery pump; and the fuel outlet is arranged on the wall of the fuel filter shell, is communicated with the electric fuel delivery pump accommodating cavity and is used for discharging the fuel flowing through the electric fuel delivery pump accommodating cavity out of the fuel filter shell.
Description
Technical Field
The utility model relates to a fuel filter casing and fuel filter subassembly.
Background
With the enhancement of the greenhouse effect, the worldwide requirements on the automobile exhaust emission are more and more strict. In recent years, the emission standard of automobile exhaust is continuously improved in China, and the emission standard is also improved in engineering machinery. The strictness of the requirement on exhaust emission enables the utilization rate of the electric control diesel engine to be continuously improved, however, when the electric control diesel engine is started at a low speed and a low temperature, the low-pressure oil way cannot automatically exhaust air in the oil way, and the engine is unstable to start, difficult to start or suddenly flameout.
On the other hand, the fuel system is a very important system in the engineering machinery, and the operation quality of the fuel system directly influences the exertion of the power of the engine. The fuel must be effectively filtered in the path of input to the engine to avoid engine fuel system failure, thereby extending engine life.
The common fuel oil filtering system comprises two stages of coarse filtering and fine filtering, and the two stages are separately designed. The rough filtration is to primarily filter the fuel oil through an oil-water separator, and the fine filtration is to secondarily filter the primarily filtered fuel oil through a fine filter. Typically, the oil-water separator is mounted on the frame near the fuel tank and the fine filter is mounted on the intake side of the engine near the high pressure fuel pump of the engine. The engine needs to be filled with fuel before it works, so there is a certain amount of air in the oil circuit.
At present, a main emptying device at home and abroad is to install a hand oil pump on a rough filter of a diesel engine or add an electric oil delivery pump between a high-pressure common rail system and the rough filter. From a comparison of the two structures: the hand oil pump is simple in design, but the hand oil pump must be manually pressed to exhaust air during operation, and the air exhaust method is time-consuming and labor-consuming. Under the condition that the manual oil pump is not clear, the engine can be continuously ignited and started, and the over-temperature damage of the starting motor or the abnormal abrasion of the carbon brush of the starting motor can be caused to reduce the service life. Therefore, most domestic diesel engine manufacturers can only select the starting motors of foreign brands, thereby improving the manufacturing cost of the engine and even the whole engine. An electric oil transfer pump is additionally arranged between a high-pressure common rail system and a coarse filter, which is the choice of most diesel engine manufacturers at present, but the structure is complex and occupies the installation space of the engine.
At present, a diesel filter is not heated or a heating sleeve is additionally arranged outside the filter, however, low-grade fuel oil is easy to wax in a low-temperature state, so that an electric control engine is in a state of insufficient oil supply, oil pressure cannot be pre-established, the starting oil pressure of the diesel engine is unstable, the starting flameout is caused, and the operation comfort of construction machinery is reduced.
The existing diesel filter is basically a spin-on filter and is replaced integrally during replacement. From the viewpoint of environmental protection and resource saving, the spin-on filter cannot meet the requirements.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, the utility model provides a fuel filter casing, include: a fuel inlet provided on a wall of a fuel filter housing for introducing fuel into the fuel filter housing; the filter element accommodating cavity is arranged in the fuel filter shell, is positioned below the fuel inlet and is communicated with the fuel inlet, and is used for accommodating a first-stage filter element and a second-stage filter element; the electric fuel delivery pump accommodating cavity is arranged in the fuel filter shell, is positioned above the filter element accommodating cavity, is communicated with the filter element accommodating cavity and is used for accommodating the electric fuel delivery pump; and the fuel outlet is arranged on the wall of the fuel filter shell, is communicated with the electric fuel delivery pump accommodating cavity and is used for discharging the fuel flowing through the electric fuel delivery pump accommodating cavity out of the fuel filter shell.
Preferably, the fuel filter housing further includes an electric heater accommodation chamber provided on a passage between the electric fuel pump accommodation chamber and the fuel outlet, for accommodating an electric heater.
Still preferably, an air outlet is arranged on the electric heater accommodating cavity.
Preferably, two passages are formed between the electric heater accommodating chamber and the electric fuel delivery pump accommodating chamber.
Further preferably, the fuel filter housing further comprises a shut-off valve chamber disposed in a passage between the fuel inlet and the cartridge receiving chamber for receiving a shut-off valve.
Still further preferably, the bottom of the filter element accommodating cavity is provided with an opening for discharging water filtered from the fuel out of the fuel filter housing.
Still further preferably, the electric fuel delivery pump accommodating chamber, the electric heater accommodating chamber and the shutoff valve chamber are located above the filter element accommodating chamber.
The utility model discloses still relate to a fuel filter casing, including fuel entry, fuel export, electronic fuel delivery pump holding chamber and filter core holding chamber, the fuel can be followed the fuel entry gets into in proper order filter core holding chamber with electronic fuel delivery pump holding chamber, then follow the fuel export flows, wherein, filter core holding chamber is used for holding first order filter core and second grade filter core simultaneously.
Preferably, the fuel filter housing further comprises an electric heater accommodating cavity, and the fuel flowing out of the electric fuel pump accommodating cavity flows through the electric heater accommodating cavity and then flows out of the fuel outlet.
Still preferably, an air outlet is arranged on the electric heater accommodating cavity.
Still preferably, the fuel filter housing further includes a shut-off valve chamber provided on a passage between the fuel inlet and the cartridge receiving chamber, for receiving a shut-off valve.
The utility model discloses further relate to a fuel filter assembly, include: a fuel filter housing according to any one of the preceding claims; the first-stage filter element and the second-stage filter element are accommodated in the filter element accommodating cavity and used for carrying out double-layer filtering on introduced fuel oil; and the electric fuel delivery pump is accommodated in the electric fuel delivery pump accommodating cavity and is used for discharging air in the filtered fuel.
Preferably, the fuel filter assembly further comprises: and the electric heater is accommodated in the electric heater accommodating cavity and used for heating fuel oil.
Still preferably, the fuel filter assembly further includes a check valve disposed on a passage between the electric fuel pump accommodating chamber and the electric heater accommodating chamber.
Still preferably, the fuel filter assembly further includes a shut-off valve provided in the shut-off valve chamber for controlling inflow of the fuel.
Further preferably, the fuel filter assembly further comprises a water collection device disposed below the fuel filter housing for collecting water filtered from the fuel, wherein the water collection device comprises: the drainage plug is positioned at the bottom of the water accumulation device; a buoy located inside the water accumulation device; and the water level sensor is used for detecting the height of water in the water accumulation device.
According to the utility model discloses a various embodiments can know, the utility model discloses a fuel filter casing and subassembly compact structure, can realize filtering, exhaust and the heating to the fuel simultaneously.
Further features of the invention will become apparent from the following description of exemplary embodiments with reference to the attached drawings.
Drawings
Fig. 1 is a perspective view of a fuel filter housing according to an embodiment of the present invention.
Fig. 2 is a schematic front view of a fuel filter housing according to an embodiment of the present invention.
Fig. 3 is a schematic view of a fuel filter housing according to an embodiment of the present invention, wherein the cartridge receiving cavity is shown in cross-section and includes a first stage cartridge and a second stage cartridge for dual layer filtration.
Fig. 4 is a schematic top view of a fuel filter housing according to an embodiment of the invention.
Fig. 5 is a perspective view of a fuel filter assembly according to an embodiment of the present invention.
Fig. 6 is a schematic perspective view of a fuel filter assembly according to an embodiment of the present invention, wherein the cartridge receiving cavity is shown in cross-section and includes a first stage cartridge and a second stage cartridge for dual layer filtration.
Fig. 7 is a schematic front view of a fuel filter assembly according to an embodiment of the present invention.
Fig. 8A and 8B are schematic top views of a fuel filter assembly according to an embodiment of the present invention, illustrating the direction of fuel flow when the fuel filter assembly is in different states.
Detailed Description
Exemplary embodiments of the present invention will be described in detail below, by way of example, with reference to the accompanying drawings. However, the components and features described in this exemplary embodiment are described as examples only, and are not intended to limit the scope of the present invention only to embodiments including these components or features.
Fig. 1 to 4 are schematic diagrams of fuel filter housings according to embodiments of the present invention.
In the first embodiment, as shown in fig. 1 to 4, the fuel filter housing 10 includes a fuel inlet 101, a fuel outlet 102, a cartridge housing chamber 103, and an electric fuel pump housing chamber 104. Fuel can enter the filter element accommodating cavity 103 from the fuel inlet 101, and then flows out from the fuel outlet 102 after flowing through the electric fuel delivery pump accommodating cavity 104. In the case where the above-described fuel flow path is satisfied, the arrangement of the cartridge accommodation chamber 103 and the electric fuel pump accommodation chamber 104 is not restrictive.
Preferably, in the second embodiment, the fuel filter housing 10 further includes an electric heater accommodation chamber 105 on the basis of the first embodiment. In this embodiment, the flow path of the fuel is: enters the filter element accommodating cavity 103 from the fuel inlet 101, flows through the electric fuel pump accommodating cavity 104, flows through the electric heater accommodating cavity 105 and then flows out from the fuel outlet 102. Where the above-described fuel flow path is satisfied, the position of the electric heater receiving chamber 105 is not restrictive.
Still preferably, in a third embodiment, the fuel filter housing 10 further includes a one-way valve chamber 106 (as shown in fig. 4) on the basis of the second embodiment. In this embodiment, when the electric fuel pump 1041 in the electric fuel pump accommodation chamber 104 is in an operating state, the flow path of the fuel is: enters the filter element accommodating cavity 103 from the fuel inlet 101, flows through the electric fuel pump accommodating cavity 104, flows through the electric heater accommodating cavity 105, and flows out from the fuel outlet 102 (as shown in fig. 8A). In addition, when the electric fuel pump 1041 in the electric fuel pump accommodation chamber 104 is in an inoperative state, the fuel can directly flow out from the filter element accommodation chamber 103 to the one-way valve chamber 106, and then flow out from the fuel outlet 102 after entering the electric heater accommodation chamber 105 through the one-way valve chamber 106 (as shown in fig. 8B). Where the above-described fuel flow path is satisfied, the location of the check valve cavity 106 is not limiting.
Further preferably, in the fourth embodiment, on the basis of the third embodiment, the fuel filter housing 10 further includes a check valve chamber 107.
Although the above embodiments have shown that the positions of the cartridge housing chamber 103, the electric fuel pump housing chamber 104, the electric heater housing chamber 105, and the shutoff valve chamber 107 are not restrictive. However, in order to make the fuel filter housing 10 compact and facilitate replacement of the filter cartridge, the arrangement shown in fig. 1 to 4 is preferred. That is, the electric fuel pump housing chamber 104, the electric heater housing chamber 105, and the shutoff valve chamber 107 are arranged side by side above the filter element housing chamber 103, and the electric fuel pump housing chamber 104 is arranged between the electric heater housing chamber 105 and the shutoff valve chamber 107.
Hereinafter, details of each component part in the fuel filter housing 10 will be described in detail with reference to fig. 1 to 4, and details and functions of each functional part accommodated in the fuel filter housing will be described in detail with reference to fig. 5 to 8B. It is to be noted that, for convenience of description, the filter cartridges 1031, 1032, the electric feed pump 1041, the electric heater 1051, the check valve 1061 and the stop valve 1071 (shown in fig. 5 to 8B) are described in detail while disclosing the respective constituent elements in the fuel filter housing 10. However, one or more of the filter elements 1031, 1032, the electric feed pump 1041, the electric heater 1051, the check valve 1061, and the stop valve 1071 do not constitute an integral part of the fuel filter housing 10, but are functional elements housed in respective chambers of the fuel filter housing 10.
The cartridge receiving cavity 103 is disposed below the fuel inlet 101 and communicates, e.g., fluidly communicates (the same applies below), with the fuel inlet 101. The fuel introduced into the fuel filter housing 10 first passes through the cartridge accommodation chamber 103, whereby the fuel can be filtered. The cartridge receiving chamber 103 is configured to receive a first stage cartridge 1031 and a second stage cartridge 1032, thereby providing a structure for fixing each cartridge. As best shown in fig. 3, the cartridge receiving chamber 103 may include a structure for receiving 2 sets of the first stage cartridge 1031 and the second stage cartridge 1032 therein, and the structure may be configured to fix the two sets of cartridges in the cartridge receiving chamber 103 in such a manner that the second stage cartridge 1032 is received in the first stage cartridge 1031. Those skilled in the art will appreciate that the number of filter elements is not limiting. Arrangements may be provided which accommodate one or more than three sets of filter elements. The shape of the cartridge is also not limiting and it is preferred to use a spin-on cartridge as shown in fig. 3. The mutual position of the cartridges is also not limiting and it is preferred to use the nested arrangement shown in fig. 3.
The first-stage filter element is preferably used for filtering impurities in the fuel oil, and the second-stage filter element is used for separating moisture in the fuel oil. The fuel is first filtered through a first stage filter 1031 and then filtered through a second stage filter 1032.
The electric fuel delivery pump accommodating cavity 104 is arranged above the filter element accommodating cavity 103 and is communicated with the filter element accommodating cavity 103 in a fluid mode, so that fuel filtered by the filter element enters the electric fuel delivery pump accommodating cavity 104. The electric fuel pump housing chamber 104 is configured to house the electric fuel pump 1041. The electric fuel pump 1041 is for discharging air from the fuel.
An electric heater receiving chamber 105 is provided in the fluid passage between the electric fuel pump receiving chamber 104 and the fuel outlet 102, and is configured to receive an electric heater 1051 for heating the fuel flowing out of the electric fuel pump receiving chamber 104. An air outlet 1052 is provided at the top of the electric heater accommodation chamber 105 for further discharging air from the fuel. The electric heater accommodation chamber 105 is provided in fluid communication with the electric fuel pump accommodation chamber 104 via a fluid passage. Preferably, the electric heater accommodation chamber 105 is provided in fluid communication with the electric fuel pump accommodation chamber 104 via two fluid passages (a first fluid passage 111 and a second fluid passage 112), as preferably shown in fig. 4. Such a design is useful so that the check valve accommodating chamber 106 can be provided on the second fluid passage 112. During operation of the electric fuel pump, the check valve 1061 may be set to be closed, thereby allowing fuel flowing out of the electric fuel pump 1041 to flow through the first fluid passage 111 into the electric heater accommodation chamber 105 to be heated, and then to flow from the electric heater accommodation chamber 105 to the fuel outlet. When the electric fuel pump does not operate, the fuel can still flow to the fuel outlet because the check valve 1061 is set to be open at this time, and the fuel flowing out of the electric fuel pump 1041 can flow to the electric heater accommodation chamber 105 through the check valve 1061 provided on the second fluid passage 112 to be heated, and then enter the fuel outlet 102. Therefore, when the electric oil delivery pump does not work, the fuel can not flow back to the filter element accommodating cavity 103 again because of no outlet.
In view of the above advantages, the fuel filter housing 10 further includes a check valve chamber 106 provided on the second fluid passage 112 between the electric fuel pump accommodation chamber 104 and the electric heater accommodation chamber 105 for accommodating the check valve 1061. Check valve 1061 may be switched between open and closed. When the electric fuel pump 1041 is operated, the check valve 1061 is set to be closed, which promotes the fuel to travel to the electric heating chamber. When the electric fuel pump 1041 is not operating, the check valve 1061 is set open, which opens a passage for fuel to flow through the check valve 1061 and into the electric heater accommodation chamber 105. This arrangement helps to heat the fuel regardless of whether the electric fuel pump is operating.
The shutoff valve chamber 107 is provided between the fuel inlet 101 and the cartridge accommodating chamber 103, and accommodates the shutoff valve 1071. The shutoff valve 1071 controls fuel to introduce or stop introduction of the cartridge accommodating chamber 103. When stop valve 1071 is in the open mode, the fuel can get into filter core accommodation chamber 103, and when stop valve 1071 is in the closed mode, the fuel can not get into filter core accommodation chamber 103, can change operations such as filter core this moment, prevents simultaneously that the fuel from flowing.
An opening (not shown) is provided below the cartridge receiving cavity 103 for discharging water filtered from the fuel. Preferably, a water accumulation device (water accumulation cup) 108 for collecting water is further provided below the fuel filter housing 10. The water accumulation assembly 108 may be snapped onto the fuel filter housing 10 or otherwise mounted to the fuel filter housing 10. The water accumulation assembly 108 may be removably or non-removably mounted to the fuel filter housing 10. Preferably, the accumulator 108 may include a float 1081 located inside the accumulator for use floating on the surface of the fluid and/or a scale inscribed on the side of the accumulator, both of which enable the level of fluid in the accumulator 108 to be visually confirmed. Alternatively, a water level sensor 1082 may be provided that may emit a signal when the water level reaches a threshold value, the signal including a sound, a light, etc. Further, a drain plug 1083 may be provided at the bottom of the water accumulation device for draining water out of the water accumulation device 108.
The fuel filter housing 10 is preferably manufactured by casting.
While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. The scope of the following claims is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures and functions.
Claims (16)
1. A fuel filter housing, comprising:
a fuel inlet provided on a wall of a fuel filter housing for introducing fuel into the fuel filter housing;
the filter element accommodating cavity is arranged in the fuel filter shell, is positioned below the fuel inlet and is communicated with the fuel inlet, and is used for accommodating a first-stage filter element and a second-stage filter element;
the electric fuel delivery pump accommodating cavity is arranged in the fuel filter shell, is positioned above the filter element accommodating cavity, is communicated with the filter element accommodating cavity and is used for accommodating the electric fuel delivery pump; and
and the fuel outlet is arranged on the wall of the fuel filter shell, is communicated with the electric fuel delivery pump accommodating cavity and is used for discharging the fuel flowing through the electric fuel delivery pump accommodating cavity out of the fuel filter shell.
2. The fuel filter housing according to claim 1, further comprising an electric heater accommodation chamber provided on a passage between the electric fuel pump accommodation chamber and the fuel outlet, for accommodating an electric heater.
3. A fuel filter housing as claimed in claim 2, wherein the electric heater receiving chamber is provided with a vent.
4. The fuel filter housing of claim 2, wherein there are two passages between the electric heater receiving cavity and the electric fuel pump receiving cavity.
5. The fuel filter housing of claim 2, further comprising a shut-off valve cavity disposed in the path between the fuel inlet and the cartridge receiving cavity for receiving a shut-off valve.
6. The fuel filter housing of claim 1, wherein the cartridge receiving cavity is provided with an opening at a bottom thereof for draining water filtered from the fuel filter housing.
7. The fuel filter housing according to claim 5, wherein the electric fuel pump accommodating chamber, the electric heater accommodating chamber, and the shutoff valve chamber are located above the filter element accommodating chamber.
8. The utility model provides a fuel filter casing, its characterized in that, includes fuel entry, fuel export, electronic fuel delivery pump holding chamber and filter core holding chamber, and the fuel can be followed the fuel entry gets into in proper order the filter core holding chamber with electronic fuel delivery pump holding chamber, then follow the fuel export flows, wherein, filter core holding chamber is used for holding first order filter core and second level filter core simultaneously.
9. The fuel filter housing of claim 8, further comprising an electric heater receiving chamber, wherein fuel flowing out of the electric fuel pump receiving chamber flows out of the fuel outlet after flowing through the electric heater receiving chamber.
10. A fuel filter housing as claimed in claim 9, wherein the electric heater receiving chamber is provided with a vent.
11. The fuel filter housing of claim 8, further comprising a shut-off valve cavity disposed in the path between the fuel inlet and the cartridge receiving cavity for receiving a shut-off valve.
12. A fuel filter assembly, comprising:
a fuel filter housing according to any one of the preceding claims;
the first-stage filter element and the second-stage filter element are accommodated in the filter element accommodating cavity and used for carrying out double-layer filtering on introduced fuel oil; and
and the electric fuel delivery pump is accommodated in the electric fuel delivery pump accommodating cavity and is used for discharging air in the filtered fuel.
13. The fuel filter assembly of claim 12, further comprising:
and the electric heater is accommodated in the electric heater accommodating cavity and used for heating fuel oil.
14. The fuel filter assembly of claim 13 further including a check valve disposed in a passage between said electric fuel pump receiving cavity and said electric heater receiving cavity.
15. The fuel filter assembly of claim 12, further comprising a shut-off valve disposed in the shut-off valve chamber for controlling the flow of fuel.
16. A fuel filter assembly as set forth in claim 12 further including water collection means disposed below said fuel filter housing for collecting water filtered from the fuel, wherein said water collection means includes:
the drainage plug is positioned at the bottom of the water accumulation device;
a buoy located inside the water accumulation device; and
and the water level sensor is used for detecting the height of water in the water accumulation device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921737973.8U CN210889170U (en) | 2019-10-16 | 2019-10-16 | Fuel filter casing and fuel filter subassembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921737973.8U CN210889170U (en) | 2019-10-16 | 2019-10-16 | Fuel filter casing and fuel filter subassembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210889170U true CN210889170U (en) | 2020-06-30 |
Family
ID=71316493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921737973.8U Active CN210889170U (en) | 2019-10-16 | 2019-10-16 | Fuel filter casing and fuel filter subassembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210889170U (en) |
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2019
- 2019-10-16 CN CN201921737973.8U patent/CN210889170U/en active Active
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