JPH0514553U - Fuel cooler - Google Patents

Abstract

(57) [Summary] [Purpose] To achieve a fuel cooling device that can reliably and effectively cool fuel without being affected by the surrounding environment, using an existing air conditioner for a vehicle, at a small size and at low cost. . [Structure] Air conditioner 21 having evaporator 26
In a vehicle equipped with, a heat exchanger 18 for cooling the fuel is provided in a part of the fuel pipes 13 and 14 connecting the fuel tank 12 and the engine 11, and the heat exchanger 18 is arranged in contact with the evaporator 26. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention is a fuel cooling device used in an automobile, in particular, a fuel cooling system in which a heat exchanger is installed in a fuel pipe and the heat exchanger is arranged in contact with an evaporator of an air conditioner mounted on a vehicle to cool the fuel. Regarding the device.

[0002]

[Prior Art]

 Conventionally, as this type of fuel cooling device, those described in Japanese Utility Model Publication No. 50-58121 and Japanese Utility Model Publication No. 56-159664 are known. For example, the former fuel cooling device of Japanese Utility Model Publication No. 50-58121 guides condensed water generated in an evaporator to a fuel pipe and cools the fuel pipe with this condensed water. In the latter fuel cooling apparatus of Japanese Utility Model Laid-Open No. 56-159664, an evaporator dedicated to fuel cooling is provided separately from an evaporator for cooling the vehicle compartment in the air conditioner, and a fuel pipe is connected to this evaporator. Cool the fuel.

[0003]

[Problems to be solved by the device]

 However, since the former fuel supply system cools with condensed water, if the surrounding environment is low in humidity and sufficient condensed water cannot be obtained, the cooling performance will be impaired, and the cooling performance will deteriorate. There was a problem of being greatly affected by. Also, in the latter fuel supply system, an evaporator dedicated to cooling the fuel is indispensable, which increases the cost and requires a large space for its layout, which adversely affects the layout of other equipment. There was a problem. The present invention has been made in view of the above problems, and the fuel can be effectively cooled without being affected by the surrounding environment, and its layout can be performed without adversely affecting other devices. The purpose is to provide a supply device at low cost.

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, the invention according to claim 1 is a vehicle equipped with an air conditioner having an evaporator, in which a part of a fuel pipe connecting a fuel tank and an engine is provided with heat for cooling fuel. An exchanger was provided and this heat exchanger was placed in contact with the evaporator. In addition to the device according to claim 1, the device according to claim 2 has a structure in which a heat exchanger for cooling a fuel and an evaporator are integrally assembled.

[0005]

[Action]

 In the fuel cooling device according to the invention as set forth in claim 1, since a heat exchanger is provided in the fuel pipe and the heat exchanger is arranged in contact with an existing evaporator in the air conditioner, it is possible to improve the environment. The fuel can be cooled without being affected. Further, since it is not necessary to provide a dedicated evaporator in the air conditioner, there is no restriction on the layout of other devices, and the cost can be reduced. Further, in the fuel supply device according to the second aspect of the present invention, the evaporator and the heat exchanger are integrally assembled to form an integrated structure, so that the heat exchange between the evaporator and the heat exchanger is highly efficient. And can be made smaller.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 to 3 show a fuel cooling device according to an embodiment of the present invention, FIG. 1 is an overall configuration diagram, FIG. 2 is a perspective view of essential parts, and FIG. 3 is a plan view of main parts.

In FIG. 1, 11 is a gasoline engine, 12 is a fuel tank, and 21 is an air conditioner. As is well known, the engine 11 is arranged in the engine room of an automobile, the fuel tank 12 is arranged inside the vehicle body behind the seat, etc., and the fuel (gasoline) can circulate between the engine 11 and the fuel tank 12. A supply fuel pipe 13 and a return fuel pipe 14 are provided.

The supply fuel pipe 13 has one end opening into the fuel tank 12 via a strainer 15 and the other end communicating with a fuel passage or the like formed in a cylinder head or the like of the engine 11. A fuel pump 16 is provided in the supply fuel pipe 13, and the fuel tank 16 is driven by a motor or the like to send the fuel in the fuel tank 12 to the engine 11.

One end of the return fuel pipe 14 communicates with the fuel passage of the engine 11, and the other end communicates with the inside of the fuel tank 12. The return fuel pipe 14 is provided with a pressure adjusting valve 16 and a heat exchanger 18, and the pressure of the fuel flowing through the pipe 14 is adjusted by the pressure adjusting valve 16 and the fuel is cooled. As shown in FIG. 3, the heat exchanger 18 includes a large number of radiating fins 19 spirally fixed to a bent portion 18a of the pipe 14 bent in a U shape or a separate U-shaped stainless pipe 18a. Consists of As will be described later, the heat exchanger 18 is integrally assembled with the evaporator of the air conditioner 21, and the heat dissipating fins 19 are arranged so as to contact the heat dissipating fins of the evaporator.

The heat exchanger 18 is not limited to the embodiment shown in FIG. 3, but may be constructed as shown in FIG. As is apparent from the figure, the heat exchanger 18 shown in FIG. 4 is formed by bending a fuel passage 31a in a wave shape in a block 31 made of aluminum, and radiating fins 32 are fixedly provided on the outer surface of the block 31. It is a thing.

As is well known, the air conditioner 21 sequentially connects a compressor 22, a condenser 23, a liquid tank 24, an expansion valve 25 and an evaporator 26 through a pipe 27 so that the refrigerant can recirculate. In the air conditioner 21, the evaporator 26 is arranged below the instrument panel in the vehicle compartment, and the heat in the vehicle compartment absorbed by the evaporator is discharged from the condenser 23 to cool the vehicle compartment.

As shown in FIG. 2, the evaporator 26 is configured by fixing a large number of heat radiation fins 26b to a heat radiation pipe 26a that is bent in a wave shape, and is integrated with the heat exchanger 18 described above to radiate heat. The fins 26b are in contact with the radiation fins 19 so as to be able to transfer heat. The evaporator 26 and the heat exchanger 18 are arranged such that the flow direction of the refrigerant in the evaporator 26 and the flow direction of the fuel in the heat exchanger 18 face each other.

In the fuel cooling device of this embodiment, a heat exchanger 18 is provided in the fuel pipe 14, and the heat exchanger 18 is integrally assembled with an evaporator 26 of an air conditioner 21 for cooling the vehicle interior, and an evaporator is installed. The fuel is cooled by utilizing the endothermic action of 26. Therefore, the fuel can be cooled reliably and effectively without being affected by the surrounding environment such as humidity, and the fuel evaporation amount can be reduced. Since the evaporator 26 is already installed in the air conditioner 21, it is not necessary to newly provide a dedicated device, and the cost can be reduced.

Particularly, in this embodiment, since the evaporator 26 and the heat exchanger 18 are integrally assembled, the size can be further reduced, and the refrigerant flow direction in the evaporator 26 and the fuel flow direction in the heat exchanger 18 can be improved. The fuel can be cooled more effectively because they are arranged so that they face each other.

[0015]

[Effect of the device]

 As described above, according to the fuel cooling device of the first aspect, the heat exchanger provided in the fuel pipe is attached to the existing evaporator in the air conditioner for cooling the passenger compartment to cool the fuel. The fuel can be cooled reliably and effectively without being affected by the surrounding environment, and the overall size can be reduced and the cost can be reduced. Further, according to the fuel supply device of the second aspect, since the heat exchanger and the evaporator are integrally assembled, in addition to the above effects, the size can be further reduced as a whole, and the freedom of layout can be increased.

[Brief description of drawings]

FIG. 1 is an overall schematic configuration diagram of a fuel cooling device according to an embodiment of the present invention.

FIG. 2 is a perspective view of a main part of the fuel cooling device.

FIG. 3 is a plan view of a main part of the fuel cooling device.

FIG. 4 is a plan view showing another aspect of the main part.

[Explanation of symbols]

11 ... Gasoline engine, 12 ... Fuel tank, 13,
14 ... Fuel piping, 18 ... Heat exchanger, 19 ... Radiating fins, 21 ... Air conditioner, 26 ... Evaporator, 26
b ... Radiating fin.

Claims (2)

[Scope of utility model registration request] 1. In a vehicle equipped with an air conditioner having an evaporator, a heat exchanger for cooling fuel is provided in a part of a fuel pipe connecting a fuel tank and an engine,
A fuel cooling device, wherein the heat exchanger is arranged in contact with the evaporator. 2. The fuel cooling device according to claim 1, wherein the heat exchanger and the evaporator are integrally assembled.