CN212124842U - Oil tank cooling structure - Google Patents
Oil tank cooling structure Download PDFInfo
- Publication number
- CN212124842U CN212124842U CN202020221564.9U CN202020221564U CN212124842U CN 212124842 U CN212124842 U CN 212124842U CN 202020221564 U CN202020221564 U CN 202020221564U CN 212124842 U CN212124842 U CN 212124842U
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- Prior art keywords
- opening
- vehicle
- closing valve
- valve
- communication portion
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- 238000001816 cooling Methods 0.000 title claims abstract description 24
- 238000004891 communication Methods 0.000 claims abstract description 48
- 238000007599 discharging Methods 0.000 claims abstract description 3
- 239000002828 fuel tank Substances 0.000 claims description 35
- 239000011800 void material Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 abstract 5
- 239000000446 fuel Substances 0.000 description 22
- 239000003921 oil Substances 0.000 description 21
- 230000000630 rising effect Effects 0.000 description 4
- 239000000295 fuel oil Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The utility model provides an oil tank cooling structure. The oil tank cooling structure comprises a heat insulation member surrounding the outer side of an oil tank for a vehicle, wherein a gap is formed between the heat insulation member and the outer surface of the oil tank, and an opening serving as a 1 st communication part is formed on one side of the heat insulation member facing the front of the vehicle and is used for enabling running wind to enter the gap when the vehicle runs; an opening as a 2 nd communication portion for discharging the traveling wind entering the space to the outside is formed on the side of the heat insulating member facing the vehicle rear side, and a 1 st opening/closing valve and a 2 nd opening/closing valve for opening or closing the 1 st communication portion and the 2 nd communication portion are provided in the 1 st communication portion and the 2 nd communication portion, respectively. Based on the structure of the utility model, when the vehicle is parked, the function of the heat insulation component can be maintained; when the vehicle is running, the heat of the road surface with high temperature due to sunshine can be effectively prevented from being absorbed and accumulated in the gap between the oil tank and the heat insulation member.
Description
Technical Field
The utility model relates to an oil tank cooling structure that vehicle was used.
Background
Conventionally, as a technique for suppressing the amount of fuel vapor generated in a fuel tank for a vehicle, a technique is known in which fuel vapor is cooled and liquefied by cold air generated by an air conditioning system for a vehicle and then returned to the fuel tank.
However, in the case of the above-described conventional technique, when the ambient temperature rises while the vehicle is parked in a parking lot or the like without using an air conditioner, the temperature of the fuel tank rises along with the rise of the ambient temperature, and the fuel temperature in the fuel tank rises, which may increase the amount of fuel vapor generation.
In contrast, for example, by disposing a heat insulating member on the outer periphery of the fuel tank, it is possible to prevent the fuel temperature from rising and the amount of fuel vapor generated from increasing due to the rise in the ambient temperature when the vehicle is parked in a parking lot or the like.
However, with the above-described structure, when the vehicle travels at high temperature such as in summer, the heat on the road surface at high temperature due to sun shine is absorbed by the heat insulating member, and the heat is accumulated in the gap between the fuel tank and the heat insulating member on the periphery of the fuel tank. As a result, the temperature of the fuel in the fuel tank is increased to a temperature higher than the ambient temperature by the heat accumulated in the gap, and the amount of the fuel vapor generated may increase.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, it is an object of the present invention to provide an oil tank cooling structure that can prevent heat from accumulating in a space between an oil tank and an oil tank peripheral heat insulating member.
As the technical scheme who solves above-mentioned technical problem, the utility model provides an oil tank cooling structure. The fuel tank cooling structure includes a heat insulating member surrounding an outer side of a fuel tank for a vehicle, and is characterized in that: a gap is formed between the heat insulating member and an outer surface of the fuel tank, and an opening as a 1 st communication portion for allowing a traveling wind to enter the gap when the vehicle travels is formed on a side of the heat insulating member facing a front of the vehicle; an opening as a 2 nd communication portion for discharging the traveling wind entering the space to the outside is formed on a side of the heat insulating member facing the vehicle rear side, and a 1 st opening/closing valve and a 2 nd opening/closing valve for opening or closing the 1 st communication portion and the 2 nd communication portion are provided in the 1 st communication portion and the 2 nd communication portion, respectively.
The utility model discloses an above-mentioned oil tank cooling structure's advantage lies in, can prevent effectively that the heat from accumulating in the space between oil tank and the oil tank outlying thermal-insulated component. Specifically, when the vehicle is traveling, the traveling wind can enter the space through the 1 st communicating portion formed on the side of the heat insulating member facing the front of the vehicle, flow from the inside of the space to the 2 nd communicating portion formed on the side facing the rear of the vehicle, and be discharged to the outside from the 2 nd communicating portion, so that the traveling wind flowing through the space can bring the heat in the space to the outside. Therefore, even if heat from a road surface having a high temperature due to solar radiation enters the gap through the heat insulating member during traveling at a high temperature such as summer, the heat is discharged to the rear of the vehicle together with traveling wind flowing through the gap, and is not accumulated in the gap, and the traveling wind passing through the gap can effectively cool the fuel tank. As a result, the fuel temperature in the fuel tank is effectively suppressed from rising during the running of the vehicle, and the amount of fuel vapor generated can be reduced.
In addition, based on the utility model discloses an oil tank cooling structure, when the vehicle stops in the parking area, can utilize thermal-insulated component to restrain the temperature of oil tank effectively and rise along with ambient temperature. Specifically, when the vehicle is stopped, the 1 st opening/closing valve and the 2 nd opening/closing valve are closed, so that even if the ambient temperature rises, heat is blocked by the heat insulating member and hardly enters the space, and therefore the temperature rise of the fuel tank is suppressed, and the amount of fuel vapor generated can be reduced.
In the above-described oil tank cooling structure of the present invention, it is preferable that the 1 st opening/closing valve and the 2 nd opening/closing valve have rotatable valve bodies, respectively, and when the vehicle travels, each of the valve bodies is pushed by traveling wind to rotate, so that the 1 st opening/closing valve and the 2 nd opening/closing valve are in an open state; when the vehicle is parked, each of the valve bodies hangs down due to its own weight, and the 1 st communication part and the 2 nd communication part are covered, so that the 1 st opening/closing valve and the 2 nd opening/closing valve are in a closed state.
With the above configuration, the 1 st opening/closing valve and the 2 nd opening/closing valve can be automatically opened and closed, and a control mechanism for controlling the opening/closing of the 1 st opening/closing valve and the 2 nd opening/closing valve does not need to be separately provided, so that the cost of the tank cooling structure can be reduced.
The utility model discloses an among the above-mentioned oil tank cooling structure, the preferred does the lower tip of 1 st intercommunication portion is formed with the upright wall portion that extends to the vehicle top, when the 1 st on-off valve is the closed condition, the 1 st on-off valve the lower tip of valve body is located one side towards the vehicle rear of the face of upright wall portion.
With the above configuration, even when a headwind opposite to the traveling wind direction blows when the vehicle stops in the parking lot, the headwind can be prevented from passing through the gap. Specifically, when the headwind blows to the valve body of the 1 st opening/closing valve, the valve body rotates toward the front of the vehicle to press the vertical wall portion of the 1 st communicating portion to close the 1 st communicating portion more tightly, so that the headwind cannot pass through the gap, and the fuel evaporation gas generation amount can be effectively reduced while maintaining the function of the heat insulating member.
Drawings
Fig. 1 is a side view showing a schematic configuration of a vehicle to which a tank cooling structure according to an embodiment of the present invention is applied.
Fig. 2 is a sectional view showing the entire structure of the oil tank cooling structure.
Fig. 3A is a cross-sectional view showing an enlarged structure of the 1 st opening/closing valve in the tank cooling structure.
Fig. 3B is an enlarged cross-sectional view of the structure of the 2 nd opening/closing valve in the tank cooling structure.
Fig. 4 is a cross-sectional view showing a state in which the 1 st opening/closing valve and the 2 nd opening/closing valve in the tank cooling structure are opened and traveling wind passes through the gap.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Fig. 1 is a side view showing a schematic configuration of a vehicle 1 to which a tank cooling structure according to the present embodiment is applied. In fig. 1 and the drawings described below, the direction of arrow FR indicates the vehicle front, and the direction of arrow UP indicates the vehicle upper side.
As shown in fig. 1, a floor panel 6 is disposed between front wheels 3 and rear wheels 4 of a vehicle 1, and a vehicle cabin 7 is located above the floor panel 6. A front seat 8 and a rear seat 9 are disposed in the vehicle interior 7.
A fuel tank 10 is disposed below the floor panel 6, and the fuel tank 10 is located forward of the rear wheel 4. The end of the oil tank 10 facing the rear of the vehicle is connected to one end of an oil inlet pipe 11, and the other end of the oil inlet pipe 11 is connected to an oil filler 12.
Further, an exhaust pipe 15 extending in the vehicle length direction is disposed below the floor panel 6. The exhaust pipe 15 is disposed on the right side of the oil tank 10 in the vehicle width direction, and has one end (end closer to the front of the vehicle) connected to an engine (not shown) and the other end (end closer to the rear of the vehicle) provided with a muffler 15a and a muffler exhaust pipe 15 b.
The engine is used to drive the vehicle 1, and the fuel stored in the fuel tank 10 is supplied to the engine. Fig. 2 is a sectional view showing a cooling structure of the oil tank 10. As shown in fig. 2, the fuel tank 10 is disposed below the floor panel 6, and fuel 13 is stored inside the fuel tank 10. The fuel tank 10 has a rectangular cross section, and is surrounded by the heat insulating members 18 on the front, rear, left, right, upper and lower sides thereof, and the heat insulating members 18 can block the entry of external heat into the fuel oil 13, thereby suppressing the temperature rise of the fuel oil 13.
Generally, when the fuel tank 10 is surrounded by the heat insulating member 18, a gap 20 is generated between the outer surface of the fuel tank 10 and the heat insulating member 18. In the present embodiment, a front side communication portion (1 st communication portion) 23 and a rear side communication portion (2 nd communication portion) 24 are formed on an end surface of the heat insulating member 18 facing the vehicle front side and an end surface facing the vehicle rear side, respectively. The front communication portion 23 is an opening formed by cutting out a part of the middle portion of the heat insulating member 18 located on the front side of the tank 10 in the vehicle height direction. The rear side communication portion 24 is an opening formed by cutting out a part of the middle portion of the heat insulating member 18 located on the rear side of the oil tank 10 in the vehicle height direction.
The outside air in front of the fuel tank 10 can enter the inside of the void 20 through the front side communication portion 23; meanwhile, the air introduced into the void 20 through the rear side communication portion 24 can be discharged to the rear side of the tank 10 (the side closer to the vehicle rear side) through the rear side communication portion 24.
Further, a front opening/closing valve (1 st opening/closing valve) 27 is provided in the front communication portion 23, and a rear opening/closing valve (2 nd opening/closing valve) 28 is provided in the rear communication portion 24.
Fig. 3A is an enlarged cross-sectional view of the front communication portion 23 and the front opening/closing valve 27. As shown in fig. 3A, the front opening/closing valve 27 includes a support shaft 27a extending in the vehicle width direction, and a valve body 27b extending downward of the vehicle from the support shaft 27 a. The support shaft 27a is supported on the lower end portion 18a of the heat insulating member 18 located at the upper end portion of the front side communication portion 23. The valve body 27b can rotate clockwise or counterclockwise about the support shaft 27 a.
Further, at the lower end portion of the front side communication portion 23, an upright wall portion 23a extending upward in the vehicle from the front portion of the upper end portion 18b of the heat insulating member 18 is formed. Normally, the valve body 27b hangs down due to its own weight, and the lower end portion of the valve body 27b is positioned on the rear side (the side facing the vehicle rear side) of the standing wall portion 23a, so that the front side communication portion 23 is covered and the front side opening/closing valve 27 is in the closed state.
As shown in fig. 3B, the vertical wall portion 23a is not formed in the rear side communication portion 24 as in the front side communication portion 23. The rear opening/closing valve 28 includes a support shaft 28a supported at an upper end portion of the rear communicating portion 24, and a valve body 28b extending downward of the vehicle from the support shaft 28a, as in the case of the front opening/closing valve 27. The valve body 28b can rotate clockwise or counterclockwise about the support shaft 28 a. Normally, the valve body 28b hangs down due to its own weight, and the lower end portion thereof contacts the upper end portion 18n of the heat insulating member 18 located at the lower end portion of the rear communication portion 24, thereby covering the rear communication portion 24 and bringing the rear opening/closing valve 28 into the closed state.
When the vehicle 1 is stopped, the valve body 27B of the front opening/closing valve 27 and the valve body 28B of the rear opening/closing valve 28 are suspended by their own weight as shown by solid lines in fig. 3A and 3B, and thus the front opening/closing valve 27 and the rear opening/closing valve 28 are closed.
When the vehicle 1 travels, traveling wind flows from the front of the vehicle to the rear of the vehicle via the front wheels 3, and the valve body 27b is pressed by the traveling wind and rotates counterclockwise by a certain angle about the support shaft 27a as shown by a broken line in fig. 3A, thereby opening the front opening/closing valve 27. When the front opening/closing valve 27 is opened, the traveling wind enters the space 20 from the front communication portion 23 and flows to the rear communication portion 24. When the valve body 28B is pushed by the traveling wind, it is turned counterclockwise by a certain angle around the support shaft 28a as a turning center as shown by a broken line in fig. 3B, and the rear opening/closing valve 28 is opened.
With the above configuration of the present embodiment, when the vehicle 1 travels, as shown in fig. 4, the front-side opening/closing valve 27 is opened by the urging of the traveling wind (as shown by the arrow in fig. 4), and after the front-side opening/closing valve 27 is opened, the traveling wind flows into the gap 20 from the front-side communicating portion 23 toward the vehicle upper side and the vehicle lower side, respectively, and the traveling wind diverged in the upper and lower directions is collected at the rear-side communicating portion 24. The rear-side opening/closing valve 28 is opened by the collected traveling wind, and the traveling wind is discharged from the rear-side communication portion 24 to the rear side of the vehicle.
Therefore, in the case where the road surface 30 (see fig. 1) is heated by sunlight in summer or the like, there is a possibility that the heat of the road surface 30 is absorbed by the heat insulating member 18 in a large amount and the heat enters the space 20 inside the heat insulating member 18 through the heat insulating member 18. However, as long as the vehicle 1 is in a running state, the running wind can pass through the gap 20 to carry heat to the outside, and therefore, the heat can be effectively prevented from accumulating in the gap 20. At the same time, the traveling wind passing through the gap 20 cools the fuel in the fuel tank 10, and thus the amount of fuel vapor generated can be effectively reduced.
On the other hand, when the vehicle 1 stops in the parking lot, the front-side opening/closing valve 27 and the rear-side opening/closing valve 28 are both in the closed state by their own weight, and the front-side communicating portion 23 and the rear-side communicating portion 24 are closed, so that the gap 20 becomes a closed space. In this case, even if the ambient temperature of the parking lot rises, external heat is blocked by the heat insulating member 18 and hardly enters the space 20 inside the heat insulating member 18, and therefore, heat is not transmitted into the fuel tank 10. Therefore, the fuel temperature in the fuel tank 10 is prevented from rising, and the amount of fuel vapor generated can be reduced.
Further, since the front-side opening/closing valve 27 and the rear-side opening/closing valve 28 are configured to be closed by their own weight and opened by being pushed by traveling wind, it is not necessary to provide a control device for controlling the front-side opening/closing valve 27 and the rear-side opening/closing valve 28, and therefore the cost of the tank cooling structure can be reduced.
When the vehicle 1 stops in the parking lot, if a headwind (wind blowing from the vehicle rear to the vehicle front) opposite to the wind direction of the traveling wind blows, the valve body 27b of the front opening/closing valve 27 hangs down by its own weight and is positioned behind the standing wall portion 23a of the front communication portion 23, so that the headwind cannot pass through the gap 20. That is, even if the valve element 28b of the rear open/close valve 28 is rotated clockwise by a certain angle by the force of the headwind to open the rear open/close valve 28 when the headwind blows into the space 20 from the rear communicating portion 24 and reaches the front communicating portion 23, the headwind pushes the valve element 27b of the front open/close valve 27 toward the front of the vehicle, and the valve element 27b presses the upright wall portion 23a of the front communicating portion 23 to close the front communicating portion 23 more tightly. Therefore, it is possible to effectively prevent the vehicle 1 from passing through the gap 20 against the wind when it is parked in the parking lot, and to maintain the function of the heat insulating member 18, thereby preventing the fuel temperature in the fuel tank 10 from rising due to the rise in the air temperature. As a result, the amount of fuel vapor generated can be effectively reduced.
The present invention is not limited to the description of the above embodiments, and can be modified as appropriate. For example, in the above embodiment, the front-side opening/closing valve 27 and the rear-side opening/closing valve 28 are configured to be closed by their own weight and opened by traveling wind, but as another embodiment, a control mechanism for controlling the opening and closing of the front-side opening/closing valve 27 and the rear-side opening/closing valve 28 may be provided.
In the above embodiment, the standing wall portion 23a is formed only in the front side communication portion 23, but a standing wall portion may be formed in the rear side communication portion 24.
In the above embodiment, the fuel tank 10 is used to supply fuel to the driving engine of the vehicle 1, but the fuel tank 10 may be a fuel tank for supplying fuel to an engine for auxiliary driving or an engine for power generation in a hybrid vehicle, an electric vehicle, or the like.
Claims (3)
1. A fuel tank cooling structure including a heat insulating member that surrounds an outside of a fuel tank for a vehicle, characterized in that:
a gap exists between the heat insulating member and the outer surface of the fuel tank,
an opening as a 1 st communication portion for allowing traveling wind to enter the void when the vehicle is traveling is formed on a side of the heat insulating member facing the front of the vehicle;
an opening as a 2 nd communication portion for discharging the traveling wind entering the void to the outside is formed on a side of the heat insulating member facing the vehicle rear,
the 1 st communication part and the 2 nd communication part are respectively provided with a 1 st opening and closing valve and a 2 nd opening and closing valve which open or close the 1 st communication part and the 2 nd communication part.
2. A fuel tank cooling structure as claimed in claim 1, wherein:
the 1 st opening/closing valve and the 2 nd opening/closing valve each have a rotatable valve body,
when the vehicle runs, each valve body is pushed by running wind to rotate, and the 1 st on-off valve and the 2 nd on-off valve are in an open state;
when the vehicle is parked, each of the valve bodies hangs down due to its own weight, and the 1 st communication part and the 2 nd communication part are covered, so that the 1 st opening/closing valve and the 2 nd opening/closing valve are in a closed state.
3. A fuel tank cooling structure as claimed in claim 1 or 2, wherein:
a vertical wall portion extending upward of the vehicle is formed at a lower end portion of the 1 st communication portion,
when the 1 st opening/closing valve is in a closed state, a lower end portion of the valve body of the 1 st opening/closing valve is positioned on a side of the standing wall portion facing a vehicle rear direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020221564.9U CN212124842U (en) | 2020-02-27 | 2020-02-27 | Oil tank cooling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020221564.9U CN212124842U (en) | 2020-02-27 | 2020-02-27 | Oil tank cooling structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212124842U true CN212124842U (en) | 2020-12-11 |
Family
ID=73676959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020221564.9U Active CN212124842U (en) | 2020-02-27 | 2020-02-27 | Oil tank cooling structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212124842U (en) |
-
2020
- 2020-02-27 CN CN202020221564.9U patent/CN212124842U/en active Active
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