CN106257041A - Boil-off gas control valve device - Google Patents

Abstract

The present invention provides a kind of and improves the boil-off gas control valve device of gas-liquid separating function with the intrinsic pressure corresponding of fuel tank.nullThis boil-off gas control valve device possesses the housing (18) being installed on fuel tank (10)、The float (20) moved up and down freely it is arranged in spatial portion (26)、It is arranged on the spool (22) on the top of float (20)、And connect in making spatial portion (26) and fuel tank (10) and passage (50 that the fuel in fuel tank (10) is imported in spatial portion (26)、38)，In the way of surrounding passage (38), it is configured with multiple baffle plate (36) in week shape in the bottom of housing (18)，Lower section arrangement of baffles structure (24) at housing (18)，This baffle arrangement body (24) has the passage (50) formed by the second cylindrical portion (52) and surrounds other baffle plates (54) configured in week shape of passage (50)，Baffle arrangement body (24) is mounted to load and unload freely relative to housing (18).

Description

Boil-off gas control valve device

Technical field

The present invention relates to a kind of boil-off gas control valve device arranged on the access making fuel tank connect with tank.

Background technology

As prior art, such as, Patent Document 1 discloses a kind of lower section at float and be provided with the stream of suppression fuel The boil-off gas control valve structure of dynamic labyrinth structure body.In patent documentation 1, as labyrinth structure body, such as disclose by The shape of the various labyrinth structure bodies that zigzag detour road etc. are constituted.

In patent documentation 1, by configuring labyrinth structure body in the lower section of float such that it is able to reduce and flow in float chamber The flow velocity of the fuel entered, and make fuel be maze-like flow and improve gas-liquid separating function, it is possible to suppress fuel to tank Outflow.

Citation

Patent documentation

Patent documentation 1: No. 4237042 publications of Japanese Patent No.

The problem that invention is to be solved

But, fuel tank is corresponding with car type, engine exhaust amount etc. and has various box shape, and according to box shape, (case holds Long-pending) and the intrinsic pressure difference of fuel tank.In patent documentation 1, it is also possible to prepare multiple labyrinth structure body, that comes with fuel tank is intrinsic pressure Correspondence, but need to manufacture the various labyrinth structure bodies that passage shape is different, and the management of the multiple labyrinth structure bodies produced Cost raises.

Summary of the invention

The present invention proposes in view of above-mentioned point, and its object is to provide a kind of can improve with the intrinsic pressure corresponding of fuel tank The boil-off gas control valve device of gas-liquid separating function.

For solving the scheme of problem

In order to realize above-mentioned purpose, the present invention is boil-off gas control valve device, and it has: housing, it is installed on combustion Hopper；Float, is arranged to move up and down freely in its spatial portion formed in described housing；Spool, it is arranged on described floating The top of son；Access, it is arranged on the downstream of described spool, and with the ft connection of described fuel tank；And passage, It is arranged on the bottom of described housing, connect in making described spatial portion and described fuel tank and by the fuel in described fuel tank to Importing in described spatial portion, wherein, described boil-off gas control valve device possesses and is arranged in the lower section of described float and suppresses institute Stating the baffle arrangement body of the flowing of fuel, described boil-off gas control valve device is characterised by, in the bottom of described housing with The mode surrounding described passage is configured with multiple baffle plate in week shape, at the lower section arrangement of baffles structure of described housing, and should Baffle arrangement body has the passage formed by cylinder and surrounds other baffle plates configured in week shape of described passage, described Baffle arrangement body is mounted to load and unload freely relative to described housing.

According to the present invention, by making baffle arrangement body be mounted to load and unload freely relative to housing, thus according to fuel tank Intrinsic pressure height, it is possible to arbitrarily select to be additionally provided with the fuel tank (baffle plate+other baffle plates) of baffle arrangement body and not adding and set Put the fuel tank (only baffle plate) of baffle arrangement body.This is the vapor volume being cleaned due to the intrinsic pressure height according to fuel tank Different reasons.As a result of which it is, in the present invention, it is possible to the fuel flowed out to outside side with the intrinsic pressure corresponding of fuel tank and adjusting Amount.

It addition, according to the present invention, the period that boil-off gas circulates at spatial portion, it is possible to by configuring in labyrinth-like on the whole Baffle plate and other baffle plates the fuel (liquid) that contains in boil-off gas is separated.Thereby, it is possible to reduce via connection road direction The amount of the fuel that outer side flows out.As a result of which it is, in the present invention, it is possible to increase the gas-liquid separating function of boil-off gas.

Extend upward it addition, it is a feature of the present invention that described baffle arrangement body has from other baffle plates described Hooking sheet, described hooking sheet is locked to the described baffle plate of the bottom of described housing.

According to the present invention, by a pair hooking sheet, the both sides of the baffle plate of housing side are engaged, it is possible to make baffle arrangement body Easily assemble relative to housing.As a result of which it is, in the present invention, other connecting elements is not used, it becomes possible to by baffle arrangement Body more compactly connects relative to housing.

And, it is a feature of the present invention that other baffle plates described along with from described cylinder be radially oriented outside and to described The lower end side of housing tilts.

According to the present invention, by making other baffle plates tilt to the lower end side of housing along with being radially oriented outside from cylinder, Thus the fuel (liquid) adhered at the lower surface of other baffle plates flows readily along inclined plane, makes fuel (liquid) easily to combustion Return in hopper.It addition, when manufacturing baffle arrangement body by mould, from the viewpoint of the demoulding, it is possible to increase produce skill Art.

Invention effect

In the present invention, it is possible to obtain a kind of improving the boil-off gas of gas-liquid separating function with the intrinsic pressure corresponding of fuel tank Control valve device.

Accompanying drawing explanation

Fig. 1 is the office of the state representing that the boil-off gas control valve device of embodiments of the present invention is installed in fuel tank Portion omits sectional view.

Fig. 2 is the axonometric chart filling the baffle arrangement body centered in the boil-off gas control valve shown in Fig. 1.

Fig. 3 is that the boil-off gas control valve device shown in Fig. 1 is observed and the axonometric chart that obtains in side from below.

Fig. 4 is the exploded perspective view representing the state after the state shown in Fig. 3 takes off baffle arrangement body.

Fig. 5 is to represent the shape being installed in fuel tank by the most additional boil-off gas control valve device arranging baffle arrangement body Sectional view is omitted in the local of state.

Fig. 6 (a) is the transverse sectional view of the VIA-VIA line along Fig. 1, and Fig. 6 (b) is the horizontal stroke of the VIB-VIB line along Fig. 1 To sectional view.

Fig. 7 is the schematic sectional view of the gas-liquid separating function for boil-off gas is described.

Fig. 8 is the axonometric chart of the baffle arrangement body of variation.

Fig. 9 is for the local of the die device of baffle arrangement body ester moulding is omitted exploded perspective view.

Symbol description:

10 fuel tanks

12 boil-off gas control valve devices

14 access

18 housings

20 floats

22 spools

24,24a baffle arrangement body

26 spatial portions

36 baffle plates

38,50 passage

52 second cylindrical portion (cylinder)

54 baffle plates (other baffle plates)

56 hooking sheets

58 arc-shaped protuberances

Detailed description of the invention

It follows that the most referring to the drawings, embodiments of the present invention are described in detail.

As it is shown in figure 1, on the top of the fuel tank 10 being equipped on motor vehicles etc., be provided with the steaming of embodiments of the present invention Send out gas control valve device 12 (hereinafter simply referred to as control valve device 12).The supply of oriented electromotor is stored in fuel tank 10 Not shown fuel.Control valve device 12 is connected with the tank 16 of the exterior arrangement at fuel tank 10 via access 14.Need It is noted that fuel tank 10 is made up of closed type trunk.

Control valve device 12 possesses housing 18, float 20, spool 22, baffle arrangement body 24 etc..Hereinafter, to each element It is described in detail.

Housing 18 is formed by resin material, upper body 18a from the outside to fuel tank 10 that expose including, at fuel tank 10 Lower case 18b being inside arranged at lower side and the middle casing being arranged between upper body 18a and lower case 18b 18c.Upper body 18a, lower case 18b and middle casing 18c assemble the most integratedly and constitute.

The access 14 of the tubulose connected with tank 16 it is formed with in upper body 18a.This access 14 is positioned at spool 22 Downstream, and with the ft connection of fuel tank 10.Middle casing 18c and lower case 18b are shaped generally as cylindrical shape, including Portion has spatial portion 26.The valve seat 28 taken a seat for spool 22 it is provided with on the top of middle casing 18c.Internal side diameter shape at valve seat 28 Becoming to have upper side opening 30, this upper side opening 30 is formed as connecting with access 14.

As shown in Fig. 1 and Fig. 4, it is formed with the lower side bigger than upper side opening 30 diameter in the lower end of lower case 18b Opening 32.As described later, this lower side opening 32 as in being assemblied in housing 18 and by after assembling by baffle arrangement body 24 The handling that baffle arrangement body 24 takes out to outside in housing 18 are function with hole portion.

It is provided with in the bottom of the internal side diameter of lower case 18b: be configured at the first cylindrical portion 34 of central part；And extractor gauge Determine angle and be circumferentially configured at the multiple baffle plates 36 on the outer peripheral face of the first cylindrical portion 34 shape.First cylindrical portion 34 is formed The passage 38 that axially (above-below direction) is through.Multiple baffle plates 36 in the way of setting up diametrically by the first of internal side diameter Lower case 18b of cylindrical portion 34 and outside diameter combines.

As shown in Fig. 4 and Fig. 6 (a), each baffle plate 36 is made up of roughly the same shape under looking up, and is formed as from the first circle Side, cylinder portion 34 gradually becomes the generally fan-shaped shape that width is wide towards lower case 18b side.It addition, the first cylindrical portion 34, multiple gear Plate 36 and lower case 18b are integrally formed by resin material.In the present embodiment, as multiple baffle plates 36, be provided with along 8 baffle plates 36 (4, upside, the downside 4 that the mode that above-below direction does not overlaps each other is interlocked up and down and circumferentially configured Sheet), but sheet number is not limited to this.

In multiple baffle plates 36, circumferentially adjacent with the first baffle plate 36 of upside and configure downside the first baffle plate 36, with The first baffle plate 36 on the downside of this is adjacent and configures the second baffle 36 of upside, and then adjacent with the second baffle 36 of upside and configure The second baffle 36 of downside, below, between upside and downside, configuration adds up to 8 baffle plates 36 alternately successively.In this situation Under, there is the upper strata being made up of the baffle plate 36 of upside and the lower floor being made up of the baffle plate 36 of downside, by the two-layer of upside Yu downside Structure is constituted.

Shape between each baffle plate 36 of between each baffle plate 36 of the most adjacent upside and the most adjacent downside Become to have the peristome 40 (with reference to Fig. 4) of generally fan-shaped shape.When observing from above-below direction, each baffle plate 36 times in upside is square Become to have a peristome 40, and each baffle plate 36 in downside be formed above peristome 40.It addition, observe from above-below direction, The accommodation space of storage baffle arrangement body 24 it is formed with between each baffle plate 36 and the lower end of lower case 18b of downside.

Return Fig. 1, be provided with in the spatial portion 26 of housing 18 (middle casing 18c) along with storage in fuel tank 10 The liquid level of fuel and move up and down float 20 freely along axial (above-below direction) of housing 18.It is provided with on the top of float 20 Jut prominent upward, is equipped with spool 22 on this jut.Spool 22 moves up and down integratedly with float 20, When the topmost of spatial portion 26 moves, it is seated at valve seat 28 and by inaccessible for upper side opening 30, cut off spatial portion 26 and connect The connection on road 14.

Metal bar-shaped horizontal direction 42 it is fixed with in the inside of float 20, and at the outside diameter of horizontal direction 42 It is equipped with the spring member 44 being made up of helical spring.The circular step portion of the inside of the upper end of this spring member 44 and float 20 46 engagings, the lower end of spring member 44 engages with the end difference 48 of lower case 18b.

The displacement of the upward direction of float 20 is assisted by spring member 44.That is, the elastic force of spring member 44 is generally Time not there is the power pressed upward by float 20, but when fuel enters in float 20, as to acting on float 20 The buoyancy power that carries out assisting play a role, thus make float 20 promptly move up.

As shown in Figure 1, Figure 2, shown in Fig. 3 and Fig. 4, baffle arrangement body 24 suppresses the flowing of fuel, and this baffle arrangement body 24 configures In the lower section of float 20, it is arranged in the lower section of multiple baffle plate 36 integral part of with lower case 18b further.Baffle arrangement body 24 have；It is arranged in central part, is formed with second cylindrical portion (cylinder) 52 of the passage 50 being made up of through through hole；Point Multiple baffle plates (other baffle plates) 54 that circumferentially shape is arranged on the outer peripheral face of the second cylindrical portion 52 from predetermined angular；From baffle plate A pair hooking sheet 56 that the upper surface of 54 extends upward；And be made up of substantially arc-shaped under overlooking and dash forward upward The a pair arc-shaped protuberance 58 gone out.

As in figure 2 it is shown, a pair hooking sheet 56 is being provided with two groups along side radially and opposite side.It addition, a pair circular arc Shape protuberance 58 is configured to, diametrically with a pair hooking sheet 56 close to configuration, and along side radially and opposite side it Between mutually opposing.

And, baffle arrangement body 24 has: along the above-below direction extension being substantially orthogonal with multiple baffle plates 54, and by upside The link wall 60 that links of the baffle plate 54 of baffle plate 54 and downside；And set up between the most adjacent link wall 60, and with The part side perisporium 62 that the inner peripheral surface of lower case 18b is opposed.

Second cylindrical portion 52 is formed axially (above-below direction) through passage 50.Second cylindrical portion 52 by The diameter identical with the first cylindrical portion 34 (with reference to Fig. 1) is constituted, when baffle arrangement body 24 is assemblied in lower case 18b, the One cylindrical portion 34 communicates with each other with the second cylindrical portion 52 arranged coaxial and each passage 38,50.

Each baffle plate 54 is made up of shape roughly the same under looking up, and is formed as from the second cylindrical portion 52 side towards lower case 18b side gradually becomes the wide generally fan-shaped shape of width (with reference to Fig. 6 (b)).It addition, the second cylindrical portion 52, multiple baffle plate 54 and under Housing 18b is integrally formed by resin material in portion.It should be noted that in the present embodiment, as multiple baffle plates 54, be provided with 8 baffle plates 54 (4, upside, 4, downside) that the mode not overlapped each other along above-below direction is in staggered configuration up and down, but be not limited to This.

On baffle arrangement body 24 in multiple baffle plates 54 of configuration, circumferentially adjacent with the first baffle plate 54 of upside and join Put downside the first baffle plate 54, adjacent with the first baffle plate 54 on the downside of this and configure upside second baffle 54, and then with upside Second baffle 54 adjacent and configure downside second baffle 54, below, join with offseting one from another between upside and downside successively Put 8 baffle plates 54 of total.In this case, constitute by the upper strata being made up of the baffle plate 54 of upside with by the baffle plate 54 of downside Lower floor, constituted with the double-layer structure of upside Yu downside.

As in figure 2 it is shown, between each baffle plate 54 of the most adjacent upside and the most adjacent downside is each Between baffle plate 54, it is formed with the peristome 64 of generally fan-shaped shape.When observing from above-below direction, at each baffle plate 54 times of upside Side is formed with peristome 64, and each baffle plate 54 in downside be formed above peristome 64.

To the baffle plate 36 (referred to as lower case side shield 36) arranged in the bottom of lower case 18b and at baffle arrangement body The configuration relation of the baffle plate 54 (referred to as structure side shield 54) arranged on 24 illustrates.Lower case side shield 36 and structure Side baffle plate 54 is the most identical on this point of being made up of the baffle plate of upper and lower two-layer total 8 (4, upside, 4, downsides) respectively.Separately Outward, for baffle plate to the configuration of circumference for, the baffle plate of the downside of lower case side shield 36 36 and structure side shield 54 Upper side shield 54 be configured in the vertical direction overlapping same phase (with reference to Fig. 6 (a), Fig. 6 (b)).

That is, when baffle arrangement body 24 being clasped relative to the bottom of lower case 18b by a pair hooking sheet 56, The pawl 70 of a pair hooking sheet 56 is locked to the baffle plate 36 of the downside of lower case side shield 36, and wherein, a pair hooking sheet 56 makes The baffle plate 54 of side between and highlight upward.As a result of which it is, the baffle plate 36 of the downside of lower case side shield 36 and structure The upper side shield 54 of side baffle plate 54 becomes same phase in the circumferential, is configured at position overlapping in the vertical direction.

Part side perisporium 62 is configured at not to be had baffle plate 54 in upside and is formed with peristome 64 and is provided with baffle plate in downside The outside diameter of the part of 54.This part side perisporium 62 is circumferentially configured with four with the separation angle of about 90 degree.With under The loss of weight portion 66 of rectangular shape it is formed with on the side of the part side perisporium 62 that the inwall of portion housing 18b is opposed.

As in figure 2 it is shown, a pair hooking sheet 56 includes: erect the most substantially in parallel from the both sides of baffle plate 54 is flat Plate portion 68；And arrange on the top of flat part 68, and there is the claw 72 of the acute angle-shaped pawl of section 70.A pair hooking sheet 56 sets It is set to, the direction being separated from each other has flexible and arranged opposite, and the acute angle-shaped pawl 70 of section is dashed forward towards one another Go out.

Each pawl 70 of a pair hooking sheet 56 is arranged to, by the baffle plate 36 of downside that arranges in the bottom of lower case 18b Both sides engage.That is, between the mutually opposing pawl 70 of a pair hooking sheet 56, clamp the baffle plate 36 of the downside of lower case 18b Both sides.It addition, in the vertical direction, the upside of the baffle plate 36 in the downside of lower case 18b and baffle arrangement body 24 The gap of regulation it is formed with between baffle plate 54.

The arc-shaped protuberance 58 of baffle arrangement body 24 is arranged to the outer diameter part of the baffle plate 36 of the downside with lower case 18b Lower surface abuts.By arranging this arc-shaped protuberance 58, when utilizing a pair pawl 70 to be engaged by baffle plate 36, arc-shaped protuberance 58 with The baffle plate 36 of lower case 18b side abuts and limits the displacement of the upward direction of baffle arrangement body 24, thus eliminates and rock.Need Illustrating, the displacement in downward direction of baffle arrangement body 24 is limited by the pawl 70 of a pair hooking sheet 56.

It addition, each baffle plate 54 of baffle arrangement body 24 is arranged to, along with from the second cylindrical portion 52 be radially oriented outside and to The lower end side of lower case 18b tilts.About this point, in aftermentioned middle detailed description.

So, baffle arrangement body 24 is arranged to relative to the bottom of the inner side of lower case 18b by a pair hooking sheet 56 Handling are freely.

The boil-off gas control valve device 12 of present embodiment is constituted, the most as described above then to its action and work Illustrate by effect.

Fig. 7 is the schematic sectional view of the gas-liquid separating function for boil-off gas is described.

In the spatial portion 26 of Fig. 7, two the rectangular shape cross sectional portion being set up in parallel in upside represent lower case respectively The section of side baffle plate 36, two the rectangular shape cross sectional portion being set up in parallel in downside represent structure side shield 54 respectively Section, the middle position in upside Yu downside is configured at the single rectangular shape cross sectional portion of central authorities and represents by linking to come Form the first cylindrical portion 34 and the second cylindrical portion 52 of passage 38,50.It addition, solid arrow represents the stream of fuel (liquid) Dynamic, dotted arrow represents the flowing of air.

If the intrinsic pressure of fuel tank 10 increases, then boil-off gas to circulate at spatial portion 26 and to flow out to access 14 side.Steam The fuel (liquid) contained in body of getting angry is with in labyrinth-like, the structure side shield 54 of configuration abuts on the whole, and and lower case Side shield 36 abuts and separates with air, the suppression outflow to float 20 side.It addition, the air contained in boil-off gas is through knot The peristome 64 of structure side baffle plate 54 and circulate to lower case side shield 36, and then through the peristome of lower case 18b side 40 and to float 20 effluent lead to.As a result of which it is, form the flowing being only air not containing fuel (liquid) towards float 20 side. It should be noted that the fuel (liquid) after Fen Liing returns in fuel tank 10.

In the present embodiment, the period that boil-off gas circulates at spatial portion 26, it is possible to by joining in labyrinth-like on the whole The fuel (liquid) contained in boil-off gas is separated by structure side shield 54 and the lower case side shield 36 put.Thus, The amount of the fuel flowed out via access 14 can be reduced to tank 16 side.As a result of which it is, in the present embodiment, it is possible to increase steam Get angry the gas-liquid separating function of body.

It addition, in the present embodiment, baffle arrangement body 24 is arranged to dress relative to the bottom of the inner side of lower case 18b Unload freely.Thus, according to the intrinsic pressure height of fuel tank 10, it is possible to arbitrarily select to be additionally provided with the fuel of baffle arrangement body 24 Case 10 (lower case side shield 36+ structure side shield 54) and the most additional combustion that baffle arrangement body 24 is set Hopper 10 (only lower case side shield 36).

That is, according to box shape (case volume) etc. and in the case of the intrinsic pressure difference of fuel tank 10, in fuel tank 10 Press in high type, can select to be additionally provided with fuel tank 10 (the lower case side shield 36+ structure of baffle arrangement body 24 Side shield 54), on the other hand, in the type forced down in fuel tank 10, can select the most additional to arrange baffle arrangement body 24 Fuel tank 10 (only lower case side shield 36).This is the steaming being cleaned due to the intrinsic pressure height according to fuel tank 10 The reason that tolerance is different.As a result of which it is, in the present embodiment, it is possible to the intrinsic pressure corresponding of fuel tank 10 and adjust to tank 16 The amount of the fuel that side is flowed out.

It addition, in the present embodiment, the pawl 70 of a pair hooking sheet 56 by arranging on baffle arrangement body 24 will The both sides locking of lower case side shield 36, thus enables that baffle arrangement body 24 easily assembles relative to lower case 18b. As a result of which it is, in the present embodiment, other connecting elements is not used, it becomes possible to by baffle arrangement body 24 relative to lower case Body 18b more compactly connects.

It follows that the variation of baffle arrangement body is illustrated.Fig. 8 is the axonometric chart of the baffle arrangement body of variation. It should be noted that to the element identical with the baffle arrangement body 24 shown in Fig. 2, mark identical symbol and to omit it detailed Describe in detail bright.

Compared with the baffle arrangement body 24 shown in baffle arrangement body 24a with Fig. 2 of this variation, the position of a pair hooking sheet 56 Put (link position) different.That is, in the baffle arrangement body 24 shown in Fig. 2, make from the both sides of baffle plate 54 to extend upward A pair hooking sheet 56 erects, but in the baffle arrangement body 24a of variation, from make peristome 64 between and adjacent one The sidepiece of the sidepiece of the baffle plate 54 of side and the baffle plate 54 of the opposing party makes a pair hooking sheet 56 erect.

As a result of which it is, the baffle arrangement body 24a of variation is being assemblied in lower case 18b by a pair hooking sheet 56 Time, the baffle plate 54 of the baffle plate 36 of the downside of lower case 18b and the upside of baffle arrangement body 24a becomes and does not weighs in the vertical direction Folded configuration relation.In the vertical direction, the gear of the upside of the peristome 40 and baffle arrangement body 24a of lower case side shield 36 Plate 54 becomes overlapping position.

In the case of the bottom of the inner side that the baffle arrangement body 24a of variation is assemblied in lower case 18b, with Fig. 2 Shown baffle arrangement body 24 is same, it is possible to increase gas-liquid separating function.

Fig. 9 is for the local of the die device of baffle arrangement body ester moulding is omitted exploded perspective view.

This die device 80 possesses: being arranged to can be along above-below direction relative to status by not shown elevating mechanism The upper mold 82 moved and lower mold 84；And it is arranged along the sliding die 86 that general horizontal direction can be retreated.

In upper mold 82 and lower mold 84, it is respectively formed with by the male and fomale(M&F) structure corresponding with the shape of baffle arrangement body 24,24a The forming face become.It addition, in sliding die 86, be formed and be made up of the recess corresponding with the claw 72 of hooking sheet 56 and for becoming The claw forming section 88 of this claw 72 of shape.For the claw 72 of hooking sheet 56, only by upper mold 82 and the shaping of lower mold 84 Face is difficult to be shaped, and therefore the claw forming section 88 of the sliding die 86 by sliding along horizontal direction shapes.

It addition, in the present embodiment, make structure side shield 54 along with outside the second cylindrical portion 52 is radially oriented Tilt to the lower end side of lower case 18b, fuel (liquid) the easily edge thus adhered at the lower surface of structure side shield 54 Inclined plane flowing so that fuel (liquid) easily returns in fuel tank 10.It addition, from making upper mold 82 separate with lower mold 84 From the viewpoint of the demoulding, it is possible to increase production technology.

Claims (3)

1. a boil-off gas control valve device, it has:

Housing, it is installed on fuel tank；

Float, is arranged to move up and down freely in its spatial portion formed in described housing；

Spool, it is arranged on the top of described float；

Access, it is arranged on the downstream of described spool, and with the ft connection of described fuel tank；And

Passage, it is arranged on the bottom of described housing, make described spatial portion with connect in described fuel tank and by described fuel Fuel in case imports in described spatial portion,

Described boil-off gas control valve device possesses and is arranged in the lower section of described float and suppresses the baffle plate of the flowing of described fuel Structure,

Described boil-off gas control valve device is characterised by,

In the way of surrounding described passage, it is configured with multiple baffle plate in week shape in the bottom of described housing,

At the lower section arrangement of baffles structure of described housing, this baffle arrangement body has the passage formed by cylinder and surrounds institute State other baffle plates configured in week shape of passage,

Described baffle arrangement body is mounted to load and unload freely relative to described housing.

Boil-off gas control valve device the most according to claim 1, it is characterised in that

Described baffle arrangement body has the hooking sheet extended upward from other baffle plates described,

Described hooking sheet is locked to the described baffle plate of the bottom of described housing.

Boil-off gas control valve device the most according to claim 1, it is characterised in that

Other baffle plates described tilt to the lower end side of described housing along with being radially oriented outside from described cylinder.