CN107859581A - A kind of diesel-oil filter element water circulation heater - Google Patents
A kind of diesel-oil filter element water circulation heater Download PDFInfo
- Publication number
- CN107859581A CN107859581A CN201711309729.7A CN201711309729A CN107859581A CN 107859581 A CN107859581 A CN 107859581A CN 201711309729 A CN201711309729 A CN 201711309729A CN 107859581 A CN107859581 A CN 107859581A
- Authority
- CN
- China
- Prior art keywords
- diesel
- oil
- water circulation
- heating
- heating muff
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 81
- 239000002283 diesel fuel Substances 0.000 title claims abstract description 45
- 238000010438 heat treatment Methods 0.000 claims abstract description 76
- 238000001914 filtration Methods 0.000 claims abstract description 40
- 239000010426 asphalt Substances 0.000 claims abstract description 24
- 238000002955 isolation Methods 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 5
- 208000002925 dental caries Diseases 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 230000008021 deposition Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000005485 electric heating Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- -1 make plugged filter Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
- F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
- F02M31/16—Other apparatus for heating fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
- F02M37/30—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by heating means
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a kind of diesel-oil filter element water circulation heater, including filter cartridge seat, at least one heating muff, at least one filtering device for diesel, mutually isolated asphalt channel and waterway channel are offered inside filter cartridge seat, filtering device for diesel is sealingly mounted in filter cartridge seat, and connected with asphalt channel, heating muff is ring-shaped sleeve structure, it is arranged in the excessively oily cavity of filtering device for diesel, its one end is fixedly connected with filter cartridge seat, excessively oily lumen therethrough both ends in the middle part of heating muff connect with filtering device for diesel and asphalt channel respectively, water circulation chamber inside heating muff connects with waterway channel.Compared with prior art, the present invention is heated using hot water by inside diesel cycle of certain water supply installation to diesel-oil filter element, can solve the problem that temperature for it is subzero when diesel oil wax deposition the problem of, with energy resource consumption is low, thermal efficiency conversion speed is fast, no-spark produce, securely and reliably, it is economic and practical the advantages that.
Description
Technical field
The present invention relates to filter technical field of heating, and in particular to a kind of diesel-oil filter element water circulation heater.
Background technology
Diesel fuel filter only serves the effect to diesel oil filtering at present, but in the situation in temperature relatively low (subzero several years)
Under, the easy wax deposition of diesel oil, make plugged filter, diesel oil can not circulate, and prevent diesel engine from normally starting.
Can currently be solved using electrically heated mode more to problem above, although Electric heating is in making, use, peace
It is simple during dress, but many defects be present in mode of heating：1) Electric heating easily produces spark, and local easily short circuit produces
High temperature, make diesel oil naturally-occurring fire；2) power supply that Electric heating uses uses the starting storage battery conduct of this diesel engine more
Power supply, its power attenuation is larger, and the startup to diesel engine has a certain impact.
It is the side that diesel heating technology develops from now on to diesel oil of diesel engine heating by the way of safety and reliability energy consumption is low
To and target.
The content of the invention
It is an object of the invention to provide such a diesel-oil filter element water circulation heater, using hot engine water to filter core
Heating, may be implemented on electronic injection diesel engine and solves the problems, such as diesel oil wax deposition when temperature is relatively low.
The present invention's is to reach above-mentioned purpose, is achieved especially by following technical scheme：
A kind of diesel-oil filter element water circulation heater, including filter cartridge seat, at least one heating muff, at least one diesel oil mistake
Device is filtered, offers mutually isolated asphalt channel and waterway channel inside filter cartridge seat, filtering device for diesel is sealingly mounted at filter
On core print seat, and connected with asphalt channel, its middle part had oily cavity；Heating muff is ring-shaped sleeve structure, and it is arranged on bavin
In the excessively oily cavity of oily filter, its one end is fixedly connected with filter cartridge seat, has the insertion of oil excessively of insertion in the middle part of heating muff
Chamber, the excessively oily lumen therethrough both ends connect with filtering device for diesel and asphalt channel respectively, have ring-type inside heating muff
Water circulation chamber, the water circulation chamber connect with waterway channel.
Further, heating muff includes outer wall, inwall and isolation section of jurisdiction, and isolation section of jurisdiction is fixedly mounted on outer wall and inwall
Between water circulation intracavitary, by water circulation chamber be divided into bottom connection two cavitys.
Further, the isolation section of jurisdiction is two panels, to be symmetrically longitudinally mounted to water circulation intracavitary, its bottom and heating mantle
There is water space between bottom of the tube.
Further, filtering device for diesel has housing and filter core, and filtering hydraulic fluid port is offered on housing, and filter core is arranged on shell
Internal portion.
Further, oil pump accommodating cavity is provided with filter cartridge seat, oil pump is installed in oil pump accommodating cavity, oil pump leads to oil circuit
Road connects.
Further, the asphalt channel includes at least one oil inlet of connection, excessively oily passage and at least one fuel-displaced
Mouthful, the waterway channel includes at least one water inlet, water passage and at least one delivery port of connection.
Further, asphalt channel is connected between the diesel oil tank of diesel car and diesel engine by oil pipe, water
The both ends of paths are connected in the water circulating pipe of diesel vehicle by pipeline.
Further, filtering device for diesel is two, respectively oil water separator and diesel fine filter.
Further, the first heating port and the second heating port, oil water separator sealing installation are offered in filter cartridge seat
Port is heated first, diesel fine filter is sealingly mounted at the second heating port.
Further, heating muff is respectively the first heating muff and the second heating muff, and first heating muff one end is pacified
In the middle part of the first heating port, and positioned at the middle part of oil water separator；Second heating muff one end is arranged on the first fire end
In the middle part of mouthful, and positioned at the middle part of diesel fine filter.
Compared with prior art, technical scheme uses hot water by certain water supply installation to diesel-oil filter element
The heating of internal diesel cycle, can solve the problem that temperature for it is subzero when diesel oil wax deposition the problem of.The present invention has that energy resource consumption is low, thermal effect
Rate conversion speed is fast, no-spark produce, securely and reliably, it is economic and practical the advantages that.
Brief description of the drawings
Fig. 1 is the side cross-sectional view of the present invention；
Fig. 2 is the normal cross-section structural representation of heating muff in the present invention；
Fig. 3 is the overall structure diagram of filter cartridge seat in one embodiment of the invention；
Fig. 4 is the normal cross-section structural representation of one embodiment of the invention.
In figure, 1, filter cartridge seat；11st, asphalt channel；111st, oil inlet；112nd, excessively oily passage；113rd, oil-out；12nd, water route
Passage；121st, water inlet；122nd, water passage；123rd, delivery port；13rd, the first heating port；14th, the second heating port；15th, it is oily
Pump accommodating cavity；2nd, heating muff；21st, excessively oily lumen therethrough；22nd, water circulation chamber；23rd, outer wall；231st, inlet opening；232nd, apopore；
24th, inwall；25th, section of jurisdiction is isolated；26th, water space is crossed；3rd, filtering device for diesel；31st, excessively oily cavity；32nd, housing, 33, filter core；
34th, hydraulic fluid port is filtered；4th, oil pump；5th, oil water separator；6th, diesel fine filter；7th, the first heating muff；8th, the second heating muff.
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
As shown in figure 1, a kind of diesel-oil filter element water circulation heater of the present invention, including filter cartridge seat 1, at least one heating
Sleeve pipe 2, at least one filtering device for diesel 3, mutually isolated asphalt channel 11 and waterway channel are offered inside filter cartridge seat 1
12.Asphalt channel 11 is connected between the diesel oil tank of diesel car and diesel engine by oil pipe, the both ends of waterway channel
It is connected to by pipeline in the water circulating pipe of diesel vehicle.As shown in Figure 3, it is preferable that asphalt channel 11 includes connection at least
One oil inlet 111, excessively oily passage 112 and at least one oil-out 113；Waterway channel 12 includes at least one water inlet of connection
Mouth 121, water passage 122 and at least one delivery port 123.Filter cartridge seat 1 forms for die sinking casting, and inside offers independently of each other
Asphalt channel 11 and waterway channel 12, in filter cartridge seat 1 in addition to the inlet and outlet in oil circuit and water route, remaining opening is to mold for convenience
And open up, it is tight sealed condition in actual use.There is mounting seat the side of filter cartridge seat 1, for being fixed on car body.
Filtering device for diesel 3 is sealingly mounted in filter cartridge seat 1, and is connected with asphalt channel 11, and its middle part had oily sky
Chamber 31.Filtering device for diesel 3 can be the existing device for diesel oil filtering.Preferably, filtering device for diesel 3 has housing
32 and filter core 33, filtering hydraulic fluid port 34 is offered on housing 32, and filter core 33 is arranged on inside housing 32.
Heating muff 2 is ring-shaped sleeve structure, its be arranged on filtering device for diesel 3 excessively oily cavity 31 in, its one end with
Filter cartridge seat 1 is fixedly connected, and is arranged on preferably by being screwed in filter cartridge seat 1.The middle part of heating muff 2 has the excessively oily of insertion
Lumen therethrough 21.The oily both ends of lumen therethrough 21 are crossed to connect with filtering device for diesel 3 and asphalt channel 11 respectively.The inside of heating muff 2 has
There is the water circulation chamber 22 of ring-type, water circulation chamber 22 connects with waterway channel 12.Preferably, heating muff 2 includes outer wall 23, inwall
24 and isolation section of jurisdiction 25, isolation section of jurisdiction 25 be fixedly mounted in the water circulation chamber 22 between outer wall 23 and inwall 24, by water circulation
Chamber 22 is divided into two cavitys of bottom connection.The both sides of outer wall 23 offer inlet opening 231 and apopore 232.Heating muff 2 is solid
It is scheduled on after being connected in filter cartridge seat 1 with waterway channel 12, water route is formed in addition to water entrance, and remaining is closing independent loops state,
It will not be communicated with asphalt channel 11.
The diesel oil of heat filtering to be added flows through in the asphalt channel 11 out of filter cartridge seat 1, diesel oil by filtering device for diesel 3 mistake
Oil strain mouth 34 enters in housing 32, and the excessively oily lumen therethrough 21 from the middle part of heating muff 2 after the filtration of filter core 33 flows out, the mistake
Journey diesel oil have passed through heating and filtration treatment simultaneously.It is another also to realize that diesel oil is by heating with above-mentioned reverse diesel oil route
The excessively oily lumen therethrough 21 at the middle part of sleeve pipe 2 enters in filtering device for diesel 3, from filtering device for diesel 3 after the filtration of filter core 33
Filtering hydraulic fluid port 34 flow out, this process diesel oil has also passed through heating and filtration treatment.
The structure of heating muff 2, it is preferable that isolation section of jurisdiction 25 is two panels, to be symmetrically longitudinally mounted in water circulation chamber 22,
There is water space 26 between the isolation bottom of section of jurisdiction 25 and the bottom of heating muff 2, cross the both sides of water space 26 and pass through for water circulation
Two cavitys.Flowed through in waterway channel 12 of the hot water out of filter cartridge seat 1 after cooling diesel engine, from heating muff 2
Top side enters in the side cavity of water circulation chamber 22, enters opposite side after flowing to the water space 26 excessively of the bottom of water circulation chamber 22
In cavity, continue to flow upwardly to the top of water circulation chamber 22, the water route of filter cartridge seat 1 is flowed back to from the opposite side at the top of heating muff 2
In passage 12, the heating process to diesel oil in filter core 33 is thus completed.
Oil pump accommodating cavity 15 is provided with filter cartridge seat 1, oil pump 4, oil pump and asphalt channel are installed in oil pump accommodating cavity 15
11 connections.When oil pump 4 is used for diesel vehicle startup beginning, diesel oil is extracted by oil pump 4, to diesel engine fuel feeding, one section to be launched
After automatic oil pumping, fuel feeding are realized between time diesel oil tank and diesel engine, oil pump 4 can be stopped.
In one embodiment, filtering device for diesel 3 is two, respectively oil water separator 5 and diesel fine filter 6.Profit
Separator 5 and diesel fine filter 6 are the device for being currently used for diesel oil filtering.The heater of the present invention being capable of Heating Diesel Fuel car original
Some filters, it is only necessary to which filtering device for diesel is sealingly mounted to the relevant position of filter cartridge seat 1.
Offer the first heating port 13 and the second heating port 14 in filter cartridge seat 1, oil water separator 5 is sealingly mounted at the
One heating port 13, diesel fine filter 6 are sealingly mounted at the second heating port 14.Heating muff 2 is respectively the first heating muff 7
With the second heating muff 8, the one end of the first heating muff 7 is arranged on the middle part of the first heating port 13, and positioned at oil water separator 5
Middle part；The one end of second heating muff 7 is arranged on the middle part of the first heating port 14, and positioned at the middle part of diesel fine filter 6.Thus may be used
Realize the two-seater filter core water circulation heating function of diesel engine.
The filter cartridge seat of the diesel engine filter core water circulation heater of the present invention uses aluminium, is molded by high-pressure casting, ties
Structure is close, and one multi-purpose, can be common on the filtering device for diesel of existing diesel vehicle.The thick of diesel oil can also be carried out simultaneously
Filter and the refined filtration of oil water separator.Formed with electric pump, self-priming feed system and water heating circulation system etc. is automatically controlled.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the involved claim of limitation.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that those skilled in the art should for clarity
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It is appreciated that other embodiment.
Claims (10)
1. a kind of diesel-oil filter element water circulation heater, it is characterised in that including filter cartridge seat (1), at least one heating muff
(2), at least one filtering device for diesel (3), mutually isolated asphalt channel (11) and waterway channel are offered inside filter cartridge seat
(12), filtering device for diesel is sealingly mounted in filter cartridge seat, and is connected with asphalt channel, and its middle part had oily cavity (31)；
Heating muff is ring-shaped sleeve structure, and it is arranged in the excessively oily cavity of filtering device for diesel, and its one end is fixed with filter cartridge seat to be connected
Connect, there is in the middle part of heating muff the excessively oily lumen therethrough (21) of insertion, the excessively oily lumen therethrough both ends respectively with filtering device for diesel
Connected with asphalt channel, there is the water circulation chamber (22) of ring-type inside heating muff, the water circulation chamber connects with waterway channel.
2. diesel-oil filter element water circulation heater according to claim 1, it is characterised in that heating muff includes outer wall
(23), inwall (24) and isolation section of jurisdiction (25), isolation section of jurisdiction is fixedly mounted on the water circulation intracavitary between outer wall and inwall, by water
Torus is divided into two cavitys of bottom connection.
3. diesel-oil filter element water circulation heater according to claim 2, it is characterised in that the isolation section of jurisdiction is two
Piece, to be symmetrically longitudinally mounted to water circulation intracavitary, there is water space (26) between its bottom and heating muff bottom.
4. diesel-oil filter element water circulation heater according to claim 1, it is characterised in that filtering device for diesel has shell
Body and filter core, filtering hydraulic fluid port are offered on housing, filter core is arranged on enclosure interior.
5. diesel-oil filter element water circulation heater according to claim 1, it is characterised in that oil pump is provided with filter cartridge seat
Accommodating cavity (15), oil pump (4) is installed in oil pump accommodating cavity, oil pump connects with asphalt channel.
6. diesel-oil filter element water circulation heater according to claim 1, it is characterised in that the asphalt channel includes connecting
Logical at least one oil inlet (111), excessively oily passage (112) and at least one oil-out (113), the waterway channel include connecting
Logical at least one water inlet (121), water passage (122) and at least one delivery port (123).
7. diesel-oil filter element water circulation heater according to claim 1, it is characterised in that asphalt channel is connected by oil pipe
It is connected between the diesel oil tank of diesel car and diesel engine, the both ends of waterway channel are connected to the water of diesel vehicle by pipeline
In circulating line.
8. diesel-oil filter element water circulation heater according to claim 1, it is characterised in that filtering device for diesel two
It is individual, respectively oil water separator (5) and diesel fine filter (6).
9. diesel-oil filter element water circulation heater according to claim 8, it is characterised in that first is offered in filter cartridge seat
Port (13) and the second heating port (14) are heated, oil water separator is sealingly mounted at the first heating port, and diesel fine filter is close
Envelope is arranged on the second heating port.
10. diesel-oil filter element water circulation heater according to claim 9, it is characterised in that heating muff is respectively
One heating muff (7) and the second heating muff (8), first heating muff one end is arranged in the middle part of the first heating port, and is located at
The middle part of oil water separator；Second heating muff one end is arranged in the middle part of the first heating port, and in diesel fine filter
Portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711309729.7A CN107859581B (en) | 2017-12-11 | 2017-12-11 | Water circulation heating device for diesel filter element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711309729.7A CN107859581B (en) | 2017-12-11 | 2017-12-11 | Water circulation heating device for diesel filter element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107859581A true CN107859581A (en) | 2018-03-30 |
| CN107859581B CN107859581B (en) | 2024-02-20 |
Family
ID=61705612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711309729.7A Active CN107859581B (en) | 2017-12-11 | 2017-12-11 | Water circulation heating device for diesel filter element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107859581B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159468A (en) * | 2019-06-20 | 2019-08-23 | 高博集团有限公司 | A kind of fuel filter with preheating mechanism |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0161193A1 (en) * | 1984-04-04 | 1985-11-13 | Jean-Claude Schmidt | Device for filtering and heating diesel fuel oil |
| CN201874705U (en) * | 2010-05-30 | 2011-06-22 | 李顺堂 | Paraffin control device for diesel oil in diesel oil engine |
| CN102345541A (en) * | 2011-11-02 | 2012-02-08 | 中国重汽集团济南动力有限公司 | Heating device of diesel oil filter |
| DE102010033742A1 (en) * | 2010-08-07 | 2012-02-09 | Mahle International Gmbh | Fluid filter, particularly fuel filter, has heating device arranged above upper end plate, where heating device has discharge channel extending through clean room in axially downward manner |
| CN104088735A (en) * | 2014-07-01 | 2014-10-08 | 初海峰 | Diesel filter hollow heating cup |
| CN207598397U (en) * | 2017-12-11 | 2018-07-10 | 宁夏神电电气有限公司 | A kind of diesel-oil filter element water circulating heater |
-
2017
- 2017-12-11 CN CN201711309729.7A patent/CN107859581B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0161193A1 (en) * | 1984-04-04 | 1985-11-13 | Jean-Claude Schmidt | Device for filtering and heating diesel fuel oil |
| CN201874705U (en) * | 2010-05-30 | 2011-06-22 | 李顺堂 | Paraffin control device for diesel oil in diesel oil engine |
| DE102010033742A1 (en) * | 2010-08-07 | 2012-02-09 | Mahle International Gmbh | Fluid filter, particularly fuel filter, has heating device arranged above upper end plate, where heating device has discharge channel extending through clean room in axially downward manner |
| CN102345541A (en) * | 2011-11-02 | 2012-02-08 | 中国重汽集团济南动力有限公司 | Heating device of diesel oil filter |
| CN104088735A (en) * | 2014-07-01 | 2014-10-08 | 初海峰 | Diesel filter hollow heating cup |
| CN207598397U (en) * | 2017-12-11 | 2018-07-10 | 宁夏神电电气有限公司 | A kind of diesel-oil filter element water circulating heater |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159468A (en) * | 2019-06-20 | 2019-08-23 | 高博集团有限公司 | A kind of fuel filter with preheating mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107859581B (en) | 2024-02-20 |
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