KR20170043323A - Fuel recycling apparatus for power unit - Google Patents

Fuel recycling apparatus for power unit Download PDF

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Publication number
KR20170043323A
KR20170043323A KR1020150142933A KR20150142933A KR20170043323A KR 20170043323 A KR20170043323 A KR 20170043323A KR 1020150142933 A KR1020150142933 A KR 1020150142933A KR 20150142933 A KR20150142933 A KR 20150142933A KR 20170043323 A KR20170043323 A KR 20170043323A
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KR
South Korea
Prior art keywords
fuel
circulating
passage
engine
circulation
Prior art date
Application number
KR1020150142933A
Other languages
Korean (ko)
Inventor
박진완
Original Assignee
덕창기계주식회사
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Publication date
Application filed by 덕창기계주식회사 filed Critical 덕창기계주식회사
Priority to KR1020150142933A priority Critical patent/KR20170043323A/en
Publication of KR20170043323A publication Critical patent/KR20170043323A/en

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    • 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
    • F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • F02M37/0023—Valves in the fuel supply and return system
    • 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
    • F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • F02M37/0023—Valves in the fuel supply and return system
    • F02M37/0035—Thermo sensitive valves
    • 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
    • F02M37/0047—Layout or arrangement of systems for feeding fuel
    • F02M37/0052—Details on the fuel return circuit; Arrangement of pressure regulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member

Abstract

The present invention is configured to allow the circulating fuel circulating from the engine to the fuel tank to be mixed with the fuel supplied from the fuel tank to the engine or to block the valve when the valve is opened or closed by using the mechanism structure using the gravity and the circulating fuel amount, And it is an object of the present invention to provide a fuel recirculation device for a power generator, which can quickly and easily perform the mixing and shutdown of circulating fuel as well as promptly responding to a circulating fuel amount.
Particularly, the present invention is configured such that a weight is provided on one side and a circulating fuel amount is applied to the other side so that the valve can be opened and closed while moving like a seesaw, so that the structure is simple and can be manufactured easily and inexpensively, Another object of the present invention is to provide a fuel recirculation apparatus for a power generating apparatus which can be partially and easily modified and used.

Description

[0001] FUEL RECYCLING APPARATUS FOR POWER UNIT [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel recirculation system, and more particularly, to a fuel recirculation system, which comprises a mechanism structure using gravity and a circulating fuel amount to open and close a flow path for circulating a part of a circulating fuel circulating from an engine to a fuel tank, Is simple, easy to operate and accurate, and is easy to repair without malfunction.

Generally, power generation devices such as engines that generate power using fossil fuels are difficult to cold start because the filter is clogged due to the cold of the fuel in winter or solidification of components such as paraffin in the fuel. In particular, this problem is more pronounced in diesel engines powered by high temperature and high pressure compression than gasoline engines, which generate power in the ignition mode at low compression temperatures.

Accordingly, the problem is solved by increasing the temperature by mixing the fuel circulated to the fuel tank with the cold fuel which is supplied to the engine, or by preheating the fuel supplied to the engine from the fuel tank by increasing the temperature . Patent Document 1 to Patent Document 3 disclose a technique relating to a device for recirculating fuel, a valve for controlling the flow, and the like.

Patent Document 1 ( Japanese patent  2000-507328, published Jun. 13, 2000)

A fuel recirculation device having a fuel tank, a fuel supply circuit for transferring the fuel between the fuel tank and the internal combustion engine, a fuel recirculation circuit for connecting the fuel supply circuit in the upper stream of the engine and recirculating the fuel periodically to the fuel tank to be. This fuel recirculation device can also be equipped with a fuel pump, whose volume can supply the fuel required by the engine to the fueling circuit and circulate the remaining fuel periodically through the fuel recirculation circuit, for example every two hours Suffice.

Patent Document 2 (Korean Publication No. 10-2009-0063885, published on June 18, 2009)

A high-pressure pump for supplying fuel from the fuel tank to pressurize the pressurized high-pressure fuel into the common rail to supply the fuel to the injector, A control unit for controlling the fuel regulator and determining the amount of fuel to be supplied to the high-pressure pump in accordance with the fuel temperature by checking the temperature of the fuel in the fuel temperature sensing unit; A return fuel control valve which is located in the middle of the fuel return line which is a line and supplies return fuel to the fuel tank under control of the control unit or re-supplies the return fuel to the high pressure pump, And a flow control valve for controlling the flow rate.

Patent Document 3 (Korean Patent Laid-Open No. 10-2012-0089757, published on Aug. 13, 2012)

When the fluid enters the steam canister, the steam canister will not function properly and typically needs to be replaced. To prevent fluid from entering the steam canister, a mechanical valve assembly is provided in the system. The mechanical valve assembly has a moving valve portion that moves to open under pressure in the fuel system to allow for vapor escape while preventing fluid from entering the canister.

However, the conventional fuel circulation apparatus has the following problems.

(1) Because of the complicated structure, it is difficult to manufacture and the manufacturing cost is high.

(2) Therefore, when the fuel circulation device fails, it takes a long time to repair it, which is disadvantageous in terms of maintenance.

(3) In particular, in the case of a configuration in which a flow path is opened or closed by using a valve such as a floating valve, a solenoid valve, or a check valve, if such a valve fails, There are many. In addition, since unnecessary parts need to be replaced, not only a high maintenance cost is required but also industrial waste is likely to be mass-produced.

(4) In addition, since the floating height of the floating valve varies depending on the amount of fuel, if the amount of fuel entering the fuel circulating device is not constant or stable depending on the engine state, the operation of the floating valve may be unstable accordingly have.

(5) In addition, since the floating valve always comes in contact with the fuel or a locked part is formed, foreign matter may adhere to the surface of the floating valve if it is used for a long time. Such foreign matter obstructs the opening and closing of the valve, It acts as a factor preventing opening and closing.

Japanese Patent Publication No. 2000-507328 (published on June 23, 2000) Korean Patent Publication No. 10-2009-0063885 (published on June 18, 2009) Korean Patent Laid-Open No. 10-2012-0089757 (published on Aug. 13, 2012)

SUMMARY OF THE INVENTION The present invention has been made in view of this point and it is an object of the present invention to provide a fuel supply system capable of mixing or blocking a circulating fuel circulating from an engine to a fuel tank while a valve is opened and closed using a mechanism structure using gravity and a circulating fuel amount It is an object of the present invention to provide a fuel recirculation device for a power generating apparatus which is simple in structure and reacts directly with a circulating fuel amount so that mixing and interception of circulating fuel can be quickly performed and maintenance can be easily and conveniently performed .

Particularly, the present invention is configured such that a weight is provided on one side and a circulating fuel amount is applied to the other side so that the valve can be opened and closed while moving like a seesaw, so that the structure is simple and can be manufactured easily and inexpensively, Another object of the present invention is to provide a fuel recirculation apparatus for a power generating apparatus which can be partially and easily modified and used.

In order to achieve the above object, a fuel recirculation apparatus for a power generation apparatus according to the present invention includes a main oil passage 110 for supplying fuel supplied from a fuel tank T to an intake system of an engine E, A first circulation flow passage 120 for allowing fuel (circulating fuel) circulating from the first circulation flow passage 120 to the fuel tank T to be mixed with the main flow passage 110, T) of the first circulation passage (130); An opening and closing mechanism 200 installed in the first circulation channel 120 and configured to open by gravity when the amount of circulated fuel reaches a predetermined flow rate to mix the circulated fuel into the main flow path 110, ; And a thermal valve (not shown) that is installed between the main circulation passage 110 and the first circulation passage 120 and is always closed so that when the circulation fuel rises above a predetermined temperature, circulating fuel is not mixed into the main passage 110 300). ≪ / RTI >

In particular, the opening and closing mechanism 200 includes a body 210 having a passage 211 through which circulating fuel can pass; A cap 220 having a through hole 221 for closing one of the body 210 and allowing the circulating fuel to enter the body 210; A weight 231 is formed on one side of the body 220 and a weight 231 which receives gravity on the other side of the body 220 is installed in the body 210 to be rotatable below the cap 220, And a tilting rod 230 having a needle 232 for opening and closing the fuel tank 210 according to the circulating fuel amount.

Here, when the circulating fuel in which the air is mixed at the initial startup flows into the first circulation flow passage 120 and flows into the through hole 221, the opening / closing mechanism 200 has a smaller amount of circulating fuel than the weight 231, When the amount of circulating fuel flowing into the through hole 221 over time is greater than the weight 231, the needle 232 closes the through hole 221 to block the circulating fuel from entering the main oil passage 110, 232 open the through hole 221 to allow the circulating fuel to enter the oil passage 110. [

The fuel recirculation device for a power generator according to the present invention has the following effects.

(1) Since the valve structure is configured to open and close using gravity and a circulating fuel amount, the entire configuration of the fuel recirculation apparatus is simplified.

(2) Thus, the fuel recycling apparatus according to the present invention is easy to manufacture, and even if a failure occurs during use, the fuel recycling apparatus can be easily modified and used for convenient maintenance.

(3) In particular, the tilting rod equipped with weight and needle on both sides moves like a seesaw so that the valve is opened and closed, so that it is possible to minimize the contact with the actual fuel or the locked portion, thereby reducing the possibility of being damaged or damaged by the fuel.

(4) Since the tilting rod moves by the mechanism structure and opens and closes the valve like this, there is little possibility of failure, and even if a trouble occurs, the part can be replaced and can be conveniently used.

(5) As the structure is simple, the tilting rod is operated in response to the change of the circulating fuel, so that the opening and closing operation can be performed quickly and accurately.

1 is a conceptual diagram showing a state in which a fuel recirculation device for a power generator according to the present invention is connected to an engine.
FIG. 2 is a sectional view showing the configuration of a fuel recirculation apparatus according to the present invention. FIG.
3 is an exploded perspective view of the fuel recirculation apparatus according to the present invention.
FIG. 4 is a view for showing a structure of an opening / closing mechanism according to the present invention, wherein FIG. 4 (a) is an exploded perspective view, and FIG.
[Fig. 5] to [Fig. 7] are sectional views showing an operating state of the fuel recirculation apparatus according to the present invention. [Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should properly define the concept of the term to describe its invention in the best possible way The present invention should be construed in accordance with the spirit and scope of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention. Thus, various equivalents And variations may be present.

(Configuration)

The fuel recirculation apparatus for a power generating apparatus according to the present invention is provided between an engine E and a fuel tank T as shown in Figs. 1 to 7, and supplies fuel for combustion An opening / closing mechanism 200 provided inside the housing 100 for opening and closing the flow path to selectively mix fuel with the fuel supplying the circulating fuel to the engine E, and And a thermal valve 300 mounted on the housing 100 to prevent the circulating fuel from being mixed with the fuel supplied to the engine when the temperature of the circulating fuel is higher than a predetermined temperature.

Particularly, since the opening / closing mechanism 200 is configured to open and close the flow path using the balance of gravity and circulating fuel amount, it can be manufactured easily because of its simple structure, .

Hereinafter, this configuration will be described in more detail. Here, the circulating fuel refers to the fuel that returns from the engine E to the fuel tank T after combustion.

The housing 100 supplies fuel from the fuel tank T to the engine E for driving the engine between the engine E and the fuel tank T as shown in Figs. 1 to 3, (Circulating fuel) remaining unused for combustion among the supplied fuel is circulated from the engine E to the fuel tank T. In this way,

Thus, in the housing 100, as shown in Fig. 2 and Fig. 3, a main oil passage 110 for supplying fuel by connecting the fuel tank T and the engine E is constituted. In the figure, the main oil passage 110 is formed to pass through the upper side of the housing 100 on the right side.

In the housing 100, the first circulation flow path 120 is formed as shown in FIGS. 2 and 3. The first circulation flow path 120 is a flow path for circulating fuel circulated from the engine E to the fuel tank T to be mixed into the above-described main flow path 110. In the drawing, the first circulation flow path 120 is formed in a "C" shape, and the circulation fuel is supplied from the engine at the upper portion and the lower end is connected to the main flow path 110 in a mutually connected manner. In the drawing, the reference numeral 121 denotes a finishing cap for finishing one of the first circulation flow paths 120, that is, the top of the first circulation flow path 120, so as to be connected to the engine E side for fuel delivery.

Finally, the housing 100 further includes a second circulation flow path 130 as shown in FIGS. 2 and 3. As shown in FIG. The second circulation flow path 130 is a flow path for branching from the first circulation flow path 120 to send the circulating fuel to the fuel tank T. This is because when the engine E is driven, the circulating fuel always enters the housing 100. When the first circulating flow path 120 is clogged, the circulating fuel is supplied to the fuel tank (not shown) through the second circulating flow path 130 T). Of course, even if the mixed fuel is mixed into the main oil passage 110, the remaining mixed fuel is sent to the fuel tank T when the mixed fuel amount is large.

The opening and closing mechanism 200 is configured to selectively open and close the first circulation channel 120 by using gravity and a circulating fuel amount as shown in Figs. 2 and 4. The opening and closing mechanism 200 may be configured as a body 210, a cap 220, and a tilting rod 230.

As shown in Fig. 2 and Fig. 4, a flow path 211 is formed in the body 210 so that the circulating fuel can pass therethrough. The body 210 may be formed in various shapes, but the body 210 may be formed in a cylindrical shape. The body 210 is installed in the first circulation channel 120 and has one end to be able to mix the circulating fuel into the main oil passage 110 through the main oil passage 110.

The cap 220 can be formed so as to be capable of closing one end of the oil passage 211 described above, preferably the side where the circulation flow path (upper side in the drawing) enters from the engine E as shown in Fig. 2 and Fig. 4 . In particular, a through hole 221 is formed in the cap 220 to allow fuel flow in and out of the body 210 thus finished. The through hole 221 serves as a valve for opening and closing the fuel flow by the operation of the tilting rod 230, which will be described later, in addition to the function of causing the circulating fuel to enter into the body 210.

The tilting rod 230 is rotatably installed on the lower surface of the cap 220 as shown in FIGS. 2 and 4, and is installed to operate in the body 210 at this time. Particularly, the tilting rod 230 is formed with a weight 231 on one side so as to receive gravity by the body 210 and a needle 232 on the other side so that the weight of the weight 231 is always And one through hole 221 is closed to block the flow of the circulating fuel. The tilting rod 230 is opened when the force applied to the needle 232 through the through hole 221 filled with the circulating fuel flows into the first circulation channel 120 is greater than the weight 231, (110). ≪ / RTI >

The thermal valve 300 is installed between the main circulation passage 110 and the first circulation flow passage 120 and communicates with the main circulation passage 120 through the first circulation flow passage 120 as shown in FIGS. 110 of the circulating fuel. Here, the thermal valve 30 is also referred to as a thermal valve, and is made of a conventional technique which is designed to be opened or closed when a fluid or the like reaches a preset temperature condition.

In particular, in the present invention, the thermal valve 300 is always open, and when the temperature of the circulating fuel reaches a predetermined temperature, for example, 17 to 23 ° C (most preferably 20 ° C) It is preferable to configure to prevent the circulation fuel from being mixed into the oil passage 110 from the oil passage 120.

The fuel recirculation apparatus for a power generating apparatus according to the present invention constructed as above operates as follows.

First, as shown in Fig. 5, fuel in the fuel tank is supplied to the engine through the main oil passage 110 as indicated by a thin arrow when the power generator is immediately started, that is, in the initial startup state. The circulating fuel remaining after combustion in the engine is returned to the fuel tank as indicated by a dark arrow. This is because the fuel is lighter than the weight 231 because the fuel enters the housing 100 but the amount thereof is not so large that the needle 232 blocks the through hole 221 and the circulating fuel is supplied to the oil passage 110 Because it blocks the incorporation. At this time, the thermal valve 300 is in an open state because the fuel temperature is low.

6, when the circulating fuel collects more than a certain amount of the circulating fuel in the first circulation flow passage 120 and exceeds the weight of the weight 231, the tilting rod 230 rotates, The needle 232 is opened and the circulating fuel flows into the oil passage 110 through the through hole 221. The thick arrow in FIG. 5 shows the flow of entrained circulating fuel.

Finally, as shown in FIG. 7, when the fuel temperature rises and reaches a predetermined temperature as the engine operation time passes, the first circulation flow path 120 is shut off by the operation of the thermal valve 300, Thereby preventing mixing into the main flow path 110. In the figure, the thin arrow indicates the direction in which the thermal valve 300 is closed, and the remaining arrows are as described in Fig. That is, even if the needle 232 opens the through hole 221, the thermal valve 300 is closed, so that the circulating fuel can not be mixed into the oil passage 110.

100: Housing
110: Gasoline
120: first circulating flow passage
130: a second circulation channel
200: opening / closing mechanism
210: Body
211: Euro
220: cap
221: Through hole
230: tilting rod
231: Weight
232: Needle
300: Thermal valve

Claims (3)

A fuel supply line 110 for supplying the fuel supplied from the fuel tank T to the intake system of the engine E and a fuel (circulating fuel) circulating from the engine E to the fuel tank T, (100) having a first circulation flow passage (120) for allowing the first circulation flow passage (120) to mix with the first circulation flow passage (110) and a second circulation flow passage (130) branched from the first circulation flow passage (120) ;
An opening and closing mechanism 200 installed in the first circulation channel 120 and configured to open by gravity when the amount of circulated fuel reaches a predetermined flow rate to mix the circulated fuel into the main flow path 110, ; And
A thermal valve 300 that is installed between the main oil passage 110 and the first circulation passage 120 and is always closed so that when the circulating fuel rises above a predetermined temperature, the circulating fuel is prevented from being mixed into the main oil passage 110 Fuel ratio of the fuel to be supplied to the fuel.
The method according to claim 1,
The opening / closing mechanism (200)
A body 210 having a passage 211 through which the circulating fuel can pass;
A cap 220 having a through hole 221 for closing one of the body 210 and allowing the circulating fuel to enter the body 210; And
A weight 231 is formed on one side of the body 220 and a weight 231 is provided on the other side of the body 220 so as to be rotatably installed in the lower portion of the cap 220, And a tilting rod (230) provided with a needle (232) for opening and closing the fuel tank according to a circulating fuel amount.
3. The method of claim 2,
The opening / closing mechanism (200)
When the circulating fuel in which air is mixed at the initial startup flows into the first circulation flow passage 120 and flows into the through hole 221, the circulating fuel amount is lighter than the weight 231 so that the needle 232 is inserted into the through hole 221 Thereby blocking the circulating fuel from entering the oil line 110,
The needle 232 opens the through hole 221 to allow the circulating fuel to enter the oil passage 110 when the amount of circulating fuel flowing into the through hole 221 becomes heavier than the weight 231 over time Fuel recirculation device for a power generating device.
KR1020150142933A 2015-10-13 2015-10-13 Fuel recycling apparatus for power unit KR20170043323A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150142933A KR20170043323A (en) 2015-10-13 2015-10-13 Fuel recycling apparatus for power unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150142933A KR20170043323A (en) 2015-10-13 2015-10-13 Fuel recycling apparatus for power unit

Publications (1)

Publication Number Publication Date
KR20170043323A true KR20170043323A (en) 2017-04-21

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Family Applications (1)

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Country Status (1)

Country Link
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