KR102471395B1 - Fuel supply apparatus - Google Patents

Abstract

The present invention relates to a fuel supply device, and relates to a housing including an inner space, a heating unit coupled to the housing to heat fuel, a filter member positioned in the inner space of the housing to filter heated fuel, and a filter member between the housing and the filter member. Provided is a fuel supply device including a heat transfer delay member positioned so as to partition the inner space of the housing vertically to delay transfer of heat generated in the heating unit to the lower portion of the filter member.

Description

Fuel supply device {FUEL SUPPLY APPARATUS}

The present invention relates to a fuel supply device, and relates to a fuel supply device usable for supplying fuel to an engine.

A fuel supply device supplies fuel to the engine. Contaminants mixed with fuel can damage the engine as well as valves, pumps and nozzles. Therefore, the fuel supply device filters the fuel discharged from the fuel tank in the fuel filter before being transferred to the engine.

The fuel filter may filter foreign substances and moisture introduced into the fuel. In particular, in the case of a vehicle using diesel as fuel, it is common for a fuel filter and a fuel heater to be modularized and installed in a vehicle as one assembly.

Meanwhile, when the vehicle is started at a low temperature, diesel passing through the fuel heater may be quickly heated, but diesel inside the fuel filter may be heated when heat generated in the fuel heater is transferred to the inside of the fuel filter.

Accordingly, as the paraffin components present in the diesel are formed as solids, the flow of the fuel is hindered, resulting in a flow pressure loss of the fuel, making it difficult for the fuel to be supplied to the engine.

In addition, heat generated in the fuel heater is slowly transferred to the entire inside of the fuel filter, the temperature rise of diesel is delayed and waxing is not removed, so diesel may not pass through the fuel filter in a cryogenic environment. In addition, the pressure inside the module may increase and the module may explode.

The background art of the present invention is disclosed in Republic of Korea Patent Publication No. 2014-0061024 (registered on May 21, 2014, title of the invention: structure of fuel heater for diesel vehicles).

An object of the present invention is to provide a fuel supply device by which fuel can be quickly supplied to an engine even when a vehicle is started at a low temperature.

A fuel supply device according to the present invention includes a housing including an inner space; a heating unit coupled to the housing to heat fuel; a filter member positioned in the inner space of the housing to filter the heated fuel; and a heat transfer delay member positioned between the housing and the filter member and positioned to partition the inner space of the housing vertically to delay transfer of heat generated in the heating unit to the lower portion of the filter member. It is characterized by doing.

The heat transfer delay member is a plate-shaped structure capable of passing the fuel, and is characterized in that it adheres along the circumferential surface of the filter member.

The housing is characterized in that it can be separated based on the portion where the heat transfer delay member is located.

It may further include a heat transfer member positioned in the inner space of the housing and positioned between the heating unit and the heat transfer delay member to transfer the heat generated by the heating unit to the surroundings.

The heat transfer member is characterized in that a coil shape or a pipe shape.

The method may further include a heat spreading member interposed between the heating unit and the heat transfer member to transfer the heat generated by the heating unit to the heat transfer member.

As described above, in the fuel supply device according to the present invention, the inner space of the housing may be partitioned vertically by the heat transfer delay member. Heat generated in the heating unit may be transferred to the surroundings and concentrated in a space between the heating unit and the heat transfer delay member.

And, this heat can also be transferred to the upper part of the inside of the filter member, and the low-temperature sludged diesel can be softened. The softened diesel is supplied to the engine, and the temperature of the entire fuel supply device may rise due to heat generated when the engine is normally operated. Therefore, while the viscosity of diesel is lowered, it can be liquefied and stably supplied to the engine.

In addition, the fuel supply device according to an embodiment of the present invention quickly heats and liquefies the diesel filled in the upper part of the inside of the filter member, and smoothly discharges the diesel through the filter member, so that it is different from the conventional fuel supply device. Alternatively, it is possible to prevent the pressure in the housing inner space from being increased by low-temperature, high-viscosity diesel.

1 is a perspective view showing a fuel supply device according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along line II-II' in the fuel supply device of FIG. 1 .
3 is a perspective view showing a fuel supply device according to another embodiment of the present invention.
FIG. 4 is an exploded perspective view illustrating a filter member, a heat transfer delay member, a heat transfer member, and a heat diffusion member extracted from the fuel supply device of FIG. 3 .
5 is a cross-sectional view showing a fuel supply device in which a heat transfer member is installed according to a modified example.

Hereinafter, an embodiment of a fuel supply device according to the present invention will be described with reference to the accompanying drawings. In this process, the thickness of lines or the size of components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of a user or operator. Therefore, definitions of these terms will have to be made based on the content throughout this specification.

1 is a perspective view showing a fuel supply device according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line II-II' in the fuel supply device of FIG. 1 .

1 and 2, a fuel supply device 100 according to an embodiment of the present invention includes a housing 110, a heating unit 120, a filter member 130, and a heat transfer delay member 140. do.

The housing 110 may accommodate a filter member 130 and a heat transfer delay member 140 to be described later. The housing 110 for this may include an inner space. The housing 110 may prevent fuel from being lost to the outside of the fuel supply device 100 .

The heating unit 120 may be coupled to the housing 110 to heat fuel. Fuel stored in a fuel tank (not shown) may be supplied to the heating unit 120 . To this end, the fuel input/output unit 170 may be coupled to the heating unit 120 . The fuel entry unit 170 may be connected to a fuel tank (not shown) to supply fuel to the heating unit 120 .

Also, fuel filtered by the filter member 130 to be described later may be discharged through the fuel input/output unit 170. Since the fuel entry/exit unit may be a fuel entry/exit unit included in a general fuel supply device, a detailed description thereof will be omitted.

The heating unit 120 may include, for example, a positive temperature coefficient (PTC) element, but is not limited thereto. Diesel increases in viscosity at low temperatures. The heating unit 120 heats the diesel to reduce viscosity. Accordingly, diesel can be smoothly supplied to the engine.

The filter member 130 may be positioned in the inner space of the housing 110 to filter heated fuel. The fuel that has passed through the filter member 130 may pass through the heating unit 120 , pass through the fuel input/output unit 170 , and be pumped to an engine (not shown) by a fuel pump (not shown).

Meanwhile, the moisture sensor 180 may be installed below the filter member 130 . The moisture detection sensor 180 may detect and remove moisture contained in the fuel passing through the filter member 130 . Since the moisture detection sensor 180 may be a moisture detection sensor included in a general fuel supply device, a detailed description thereof will be omitted.

The heat transfer delay member 140 may be positioned between the housing 110 and the filter member 130 to partition the inner space of the housing 110 vertically. The heat transfer delay member 140 may delay transfer of heat generated in the heating unit 120 to the lower portion of the filter member 130 . The heat transfer delay member 140 may be formed in a ribbon shape, for example, and adhered along the circumferential surface of the filter member 130 .

The heat transfer delay member 140 may be, for example, a plate-shaped structure through which fuel may pass. The heat transfer delay member 140 may have pores to allow fuel to pass therethrough. Alternatively, the heat transfer delay member 140 may be formed of a net. In this case, the heat transfer delay member 140 may be formed of a metal wire.

It may be difficult for low-temperature sludged diesel to pass through the heat transfer delay member 140 , but diesel heated by heat and liquefied can naturally pass through the heat transfer delay member 140 .

The heat transfer delay member 140 delays the transfer of heat generated in the heating unit 120 to the lower portion of the filter member 130 so that the fuel filled between the heating unit 120 and the heat transfer delay member 140 is transferred to a local area. can be heated negatively. Along with this, the top of the filter member 130 may also be heated.

Accordingly, fuel filled in a portion of the filter member 130 that is pumped and discharged by a fuel pump (not shown) can be quickly heated. Therefore, the sludged diesel can be quickly heated and liquefied while the viscosity is rapidly lowered, so that it can be rapidly supplied from the filter member 130 to the engine.

Thereafter, while the entire fuel supply device 100 according to an embodiment of the present invention is heated by the heat generated from the heating unit 120 and the engine that operates, the fuel passing through the upper and lower portions of the filter member 130 can be stably supplied to the engine.

Meanwhile, the aforementioned housing 110 may be separated based on a portion where the heat transfer delay member 140 is located. In more detail, the housing 110 may be separated into an upper portion 110a and a lower portion 110b, respectively.

As a method of coupling the upper portion 110a and the lower portion 110b of the housing 110, various methods such as a bolt fastening method and a screw coupling method may be used, but are not limited to a specific method.

When the filter member 130 needs to be replaced, the user can easily replace the housing 110 by separating the upper portion 110a and the lower portion 110b and removing the filter member 130 from the housing 110. have. In a conventional fuel supply device, since a heating unit, a housing, and a filter member are integrally modularized, when a filter member needs to be replaced, it is common to replace all of the modularized heating unit, housing, and filter member.

However, as described above, in the fuel supply device 100 according to an embodiment of the present invention, the housing 110 is configured to be separable into an upper portion 110a and a lower portion 110b. Therefore, when the filter member 130 needs to be replaced, the inner space of the housing 110 is opened so that only the filter member 130 that needs to be replaced can be replaced and used, thereby reducing vehicle maintenance costs.

Meanwhile, the aforementioned heat transfer delay member 140 may adhere to the inner wall surface of the housing 110 . Therefore, in the heat transfer delay member 140, a portion of the housing 110 that is vulnerable to external force is damaged by an external impact or a force applied during the fastening process of the upper part 110a and the lower part 110b of the housing 110 to the housing ( 110) can also serve as a support frame preventing it from being crushed.

3 is a perspective view showing a fuel supply device according to another embodiment of the present invention, and FIG. 4 is a filter member, a heat transfer delay member, a heat transfer member, and a heat diffusion member extracted from the fuel supply device of FIG. 3 . It is an exploded perspective view.

Referring to FIGS. 3 and 4 , the fuel supply device 200 according to another embodiment of the present invention may further include a heat transfer member 150 .

The heat transfer member 150 may be positioned in the inner space of the housing 110 and positioned between the heating unit 120 and the heat transfer delay member 140 . The heat transfer member 150 may transfer heat generated from the heating unit 120 to the surroundings.

More specifically, the heat transfer member 150 delays heat transfer between the heating unit 120 and the heat transfer delay member 140 by passing through the heating unit 120 by heating the space between the heating unit 120 and the heat transfer delay member 140. The fuel located between the members 140 can be heated more quickly by the heat generated by the heating unit 120 .

The material of the heat transfer member 150 may be, for example, a metal having a relatively higher heat transfer rate than general metals such as aluminum, copper, copper, etc., but is not limited thereto.

The heat transfer member 150 may adhere to the inner wall surface of the housing 110 . Based on the direction viewed in the drawing, the upper side of the heat transfer member 150 may contact the heating unit 120 and the lower side may contact the heat transfer delay member 140 .

The heat transfer member 150 may have, for example, a pipe shape. In this case, the outer diameter of the pipe-shaped heat transfer member 150 may be equal to or smaller than the inner diameter of the housing 110 . Alternatively, as shown in FIG. 5 , the heat transfer member 250 may also have a coil shape, for example.

Meanwhile, the fuel supply device 200 according to another embodiment of the present invention may further include a heat spreading member 160 .

The heat spreading member 160 may be interposed between the heating unit 120 and the heat transfer member 150 . The heat spreading member 160 may transfer heat generated from the heating unit 120 to the heat transfer member 150 . The shape of the heat spreading member 160 may be, for example, a disc shape, and a hollow H1 through which the filter member 130 passes may be formed.

Also, fuel inlet holes H2 may be formed at predetermined angles based on the hollow H1. The fuel inlet hole H2 may be formed at a portion corresponding to a portion of the heat spreading member 160 from which fuel heated by the heating unit 120 is discharged.

The heat spreading member 160 may adhere to the lower side of the heating unit 120 . When heat is generated in the heating unit 120 , the heat may pass through the heat spreading member 160 and be transferred to the heat transfer member 150 . Accordingly, the heat transfer member 150 can be quickly heated.

In the aforementioned fuel supply devices 100 and 200 according to one embodiment of the present invention, the internal space of the housing 110 may be divided up and down by the heat transfer delay member 140 . Heat generated in the heating unit 120 may be transferred to the surroundings and concentrated in a space between the heating unit 120 and the heat transfer delay member 140 .

And, this heat can also be transferred to the upper part of the inside of the filter member 130, and the diesel in a low-temperature sludge state can be softened. The softened diesel is supplied to the engine, and the entire temperature of the fuel supply devices 100 and 200 may rise due to heat generated while the engine operates normally. Therefore, while the viscosity of diesel is lowered, it can be liquefied and stably supplied to the engine.

In addition, the fuel supply device 100 according to an embodiment of the present invention quickly heats and liquefies the diesel filled in the upper part of the inside of the filter member 130, and the diesel is smoothly discharged through the filter member 130. can be made Therefore, unlike conventional fuel supply devices, the fuel supply device 100 according to an embodiment of the present invention can prevent the pressure in the inner space of the housing 110 from being increased by low-temperature, high-viscosity diesel.

Although various embodiments of the present invention have been described above, the drawings and detailed description of the present invention referred to so far are only examples of the present invention, which are only used for the purpose of explaining the present invention, but are limited in meaning or claims. It is not intended to be used to limit the scope of the invention described in the scopes. Therefore, those of ordinary skill in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

100, 200: fuel supply device
110: housing 120: heating unit
130: filter member 140: heat transfer delay member
150, 250: heat transfer member 160: heat diffusion member

Claims (6)

A housing including an inner space;
a heating unit coupled to the housing to heat fuel;
a filter member positioned in the inner space of the housing to filter the heated fuel; and
A heat transfer delay member positioned between the housing and the filter member and positioned to partition the inner space of the housing vertically to delay transfer of heat generated in the heating unit to the lower portion of the filter member; including Fuel supply device, characterized in that.
According to claim 1,
The fuel supply device according to claim 1, wherein the heat transfer delay member is a plate-shaped structure through which the fuel can pass, and is closely adhered along a circumferential surface of the filter member.
According to claim 1,
The fuel supply device, characterized in that the housing can be separated based on the portion where the heat transfer delay member is located.
According to claim 1,
The fuel supply device of claim 1 , further comprising a heat transfer member positioned in the inner space of the housing and positioned between the heating unit and the heat transfer delay member to transfer the heat generated by the heating unit to the surroundings.
According to claim 4,
The fuel supply device, characterized in that the heat transfer member is a coil shape or a pipe shape.
According to claim 4,
The fuel supply device of claim 1, further comprising a heat diffusion member interposed between the heating unit and the heat transfer member to transfer the heat generated by the heating unit to the heat transfer member.

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