JP5107216B2 - Evaporative fuel processing equipment - Google Patents

Description

  The present invention mainly relates to a fuel vapor processing apparatus mounted on a vehicle.

  Conventionally, for example, in Patent Document 1, a heat storage material in which a phase change material that absorbs and releases latent heat according to a temperature change is enclosed in a microcapsule is molded using a binder to form a molded heat storage material, A latent heat storage type adsorbent for canisters obtained by molding an adsorbent with a binder is described. This latent heat storage type adsorbent for canisters is, for example, in the shape of pellets (columnar, spherical), disks, blocks, honeycombs, etc., and the average particle diameter is about 0.5 to 4 mm (see paragraph [0058]). .

JP 2006-68693 A

The latent heat storage type adsorbent for canister described in Patent Document 1 is granular and is intended to be filled in a casing of a canister. In such a latent heat storage type adsorbent, there is a problem that the heat transfer performance between the adsorbent and the heat storage material in a state where the casing is filled is low, and the adsorption / desorption performance of the adsorbent is low.
The problem to be solved by the present invention is to improve the heat transfer performance between the adsorbent and the heat storage material in the heat storage material-integrated honeycomb adsorbent, and the evaporation that can improve the adsorption / desorption performance of the adsorbent. The object is to provide a fuel processor.

The above-mentioned problem can be solved by an evaporative fuel processing apparatus having the gist of the configuration described in the appended claims.
That is, according to the evaporative fuel processing device described in claim 1 of the claims, the heat storage material-integrated honeycomb adsorbent and the casing are thermally insulated by the pair of heat insulating members. Thereby, transfer of the heat | fever between both is interrupted | blocked. Therefore, the heat transfer performance between the adsorbent and the heat storage material in the heat storage material-integrated honeycomb adsorbent can be improved, and the adsorption / desorption performance of the adsorbent can be improved. Further, the heat insulating member has an outer peripheral surface holding portion that contacts the outer peripheral surface of the heat storage material-integrated honeycomb adsorbent body and an end surface holding portion that contacts the end surface of the heat storage material-integrated honeycomb adsorbent body.

Further , the heat insulating member has elasticity. Accordingly, since the heat storage material-integrated honeycomb adsorbent is elastically held with respect to the casing using the heat insulating member, it is possible to prevent the heat storage material-integrated honeycomb adsorbent from being damaged due to external forces such as vibration and impact. .

In addition , a relief recess corresponding to a corner portion formed by the outer peripheral surface and the end surface of the heat storage material-integrated honeycomb adsorbent is provided in the inner peripheral portion of the heat insulating member.

According to the fuel vapor processing apparatus described in claim 2, the lip seal portion that elastically contacts the casing is formed on the outer peripheral surface holding portion of the heat insulating member.
Moreover, according to the evaporative fuel processing apparatus as claimed in claim 3, the adsorbent capable of adsorbing and desorbing the evaporative fuel, and the phase change substance that absorbs and releases latent heat according to the temperature change A honeycomb-structured heat storage material-integrated honeycomb adsorbent having a heat storage material encapsulated in microcapsules, and a gas containing evaporative fuel in a large number of air holes in the honeycomb adsorbent A casing that can be accommodated, and a pair of heat insulating members that insulate between the casing and both ends of the heat storage material-integrated honeycomb adsorbent, wherein the heat insulating member is an outer periphery of the heat storage material-integrated honeycomb adsorbent An outer peripheral surface holding portion that contacts the surface, and an end surface holding portion that contacts an end surface of the heat storage material-integrated honeycomb adsorbent, wherein the heat insulating member has elasticity, and the outer peripheral surface holding portion of the heat insulating member includes , Lip seal portion for elastically contacting the serial casing is formed.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

[Example 1]
A first embodiment of the present invention will be described. The evaporated fuel processing apparatus of this embodiment is mounted on a vehicle. For convenience of explanation, after describing the heat storage material-integrated honeycomb adsorbent used in the evaporated fuel processing apparatus, the evaporated fuel processing apparatus will be described. FIG. 1 is a perspective view showing a heat storage material-integrated honeycomb adsorbent.
As shown in FIG. 1, the heat storage material-integrated honeycomb adsorbent 10 has a honeycomb structure having a cylindrical shape and a large number of ventilation holes 12 extending in the axial direction. The heat storage material-integrated honeycomb adsorbent 10 is manufactured by the following manufacturing method 1 or manufacturing method 2. 2 is a schematic diagram showing a manufacturing method 1 of a heat storage material-integrated honeycomb adsorbent, and FIG. 3 is a schematic diagram showing the manufacturing method 2 in the same manner.

[Production Method 1]
As shown in FIG. 2, a heat storage material 14 in the form of powder or granules is prepared. The heat storage material 14 is obtained by encapsulating a phase change material 15 that absorbs and releases latent heat according to a temperature change in a microcapsule 16. The phase change material 15 encapsulated in the microcapsule 16 may be any compound that can cause absorption and release of latent heat in accordance with the phase change between the solid and the liquid. The phase change material 15 is a material that becomes solid when the temperature is lower than the melting point and becomes liquid when the temperature is higher than the melting point. In the present embodiment, the heat storage material 14 in which hexadecane having a melting point of 18 ° C. is enclosed in the microcapsule 16 as the phase change substance 15 and nonadecane having the melting point of 32 ° C. is enclosed in the microcapsule 16 as the phase change substance 15. The stored heat storage material 14 is used in combination. Further, as a material of the microcapsule 16, a resin material, for example, a melamine resin is used. The average particle diameter 14d of the heat storage material 14 is, for example, about 3.5 μm.

  The heat storage material 14 is mixed with a binder 18 to form a slurry, and the slurry is formed by a granulator, thereby forming a molded heat storage material 20 in which the heat storage material 14 is covered with the binder 18. At this time, as the binder 18, a thermosetting resin such as a phenol resin is used. Moreover, the average particle diameter 20d of the molded heat storage material 20 is, for example, φ5, 5-6.5 μm.

  Next, the molded heat storage material 20 and the adsorbent 22 are kneaded to form a slurry, and the slurry is extruded using an extrusion molding machine or the like, whereby the honeycomb-structured heat storage material-integrated honeycomb adsorbent 10 (symbol, A is changed). Are attached). At this time, as the adsorbent 22, powdered activated carbon capable of adsorbing and desorbing evaporated fuel is used. At this time, the heat storage material 14 and the adsorbent 22 are coupled by the binder 18 of the molded heat storage material 20.

[Production Method 2]
As shown in FIG. 3, similar to the manufacturing method 1, the heat storage material 14 in which the phase change material 15 is sealed in the microcapsule 16 and the binder 18 are mixed to form a slurry, and the slurry is molded by a granulator, The molded heat storage material 20 is formed.

  On the other hand, a honeycomb adsorbent 24 having a honeycomb structure is prepared. The honeycomb adsorbent 24 is formed by kneading an adsorbent, a binder, and a material having a high heat capacity such as ceramic into a slurry, and molding the slurry with an extruder or the like. As this adsorbent, powdered activated carbon capable of adsorbing and desorbing evaporated fuel is used. The honeycomb adsorbent 24 has a size that can be handled as a single product.

  Then, the molded heat storage material 20 is applied to the outer peripheral surface, both end surfaces of the honeycomb adsorbent body 24 and the inner wall surface of the vent hole 12, whereby the honeycomb structure heat storage material-integrated honeycomb adsorbent body 10 (symbol, B) is formed. Attached). The molded heat storage material 20 (B) is applied to the honeycomb adsorbent 24 so that the adsorption performance and the separation performance of the evaporated fuel by the adsorbent 22 are hardly impaired. At this time, the heat storage material 14 and the honeycomb adsorbent 24 are joined by the binder 18 of the molded heat storage material 20.

  Both the heat storage material-integrated honeycomb adsorbent 10 (A) manufactured by the manufacturing method 1 and the heat storage material-integrated honeycomb adsorbent 10 (B) manufactured by the manufacturing method 2 both adsorb evaporated fuel and It has a desorbable adsorbent and a heat storage material 14 (see FIGS. 2 and 3) in which a phase change material 15 that absorbs and releases latent heat according to a temperature change is enclosed in a microcapsule 16.

Next, the evaporative fuel processing apparatus will be described. FIG. 4 is a side view showing the fuel vapor processing apparatus with a part broken away.
As shown in FIG. 4, the evaporated fuel processing device 30 includes a case 32. The case 32 includes a main case body 34 that forms the main body, a sub case body 36 that forms a separate body from the main case body 34, and a communication pipe 38 that communicates the main case body 34 and the sub case body 36. ing. For convenience of explanation, the upper, lower, left, and right sides of the case 32 are the same as those in FIG.

  The main case body 34 is formed in a hollow box shape. The main case body 34 includes a case main body 40 that closes the upper surface and opens the lower surface, and a lid plate 41 that closes the lower surface opening of the case main body 40. A tank port 43, a purge port 44 and a connection port 45 are provided on the upper surface of the main case body 34. The tank port 43 is connected to an evaporated fuel gas passage (not shown) that communicates with the gas phase portion of the fuel tank. A gas containing evaporated fuel (referred to as “evaporated fuel gas”) generated in the fuel tank is introduced into the main case body 34 through the evaporated fuel gas passage and the tank port 43. The evaporated fuel gas is a mixture of evaporated fuel (mainly hydrocarbon compound) and air.

  A purge passage (not shown) communicating with the intake pipe of the engine is connected to the purge port 44. A purge control valve (not shown) is provided in the middle of the purge passage. By controlling the purge control valve by a control device (not shown) during engine operation, purge control related to the desorption of evaporated fuel is performed. To be done. Further, one end of the communication pipe 38 is connected to the connection port 45.

  Although not shown, the main case body 34 is filled with a granular adsorbent made of activated carbon. The adsorbent adsorbs the evaporated fuel contained in the evaporated fuel gas introduced into the main case body 34 from the tank port 43 so as to be detachable, and is composed of granulated coal, crushed coal, or the like.

  The sub case body 36 includes a hollow cylindrical case tube portion 47 and a cover plate portion 48 that closes the upper surface opening of the case tube portion 47. The cover plate portion 48 is provided with a connection port 50 communicating with the sub case body 36. The other end of the communication pipe 38 is connected to the connection port 50. Thereby, the inside of the main case body 34 and the inside of the sub case body 36 are communicated via the communication pipe 38. In addition, an atmospheric port 51 for reducing the diameter is provided at the lower end of the sub case body 36. The atmosphere port 51 is connected to an atmosphere passage (not shown) communicating with the atmosphere side. Further, a cover cylinder portion 52 surrounding the periphery of the atmospheric port 51 is provided at the lower end portion of the sub case body 36. The sub case body 36 is attached to the side surface of the main case body 34. The case cylinder portion 47 is formed in a gentle taper shape that makes the inner diameter on the cover plate 41 side larger than the inner diameter on the atmosphere port 51 side. The heat storage material-integrated honeycomb adsorbent 10 is accommodated in the case cylinder portion 47. The sub case body 36 corresponds to a “casing” in the present specification.

  The heat storage material-integrated honeycomb adsorbent 10 is elastically held by a pair of holding members 54 and 56 in the case cylinder portion 47 of the sub case 36. The first holding member 54 disposed on the lower side is in proximity to or in contact with the air-permeable filter 58 provided at the upper end of the atmospheric port 51. On the second holding member 56 disposed on the upper side, a ring-shaped pressing member 60 is placed concentrically. Further, the cover plate portion 48 is mounted on the upper surface opening of the case tube portion 47 by welding, bonding or the like after a pressing spring 62 made of a coil spring is disposed concentrically on the pressing member 60. The holding spring 62 elastically presses the heat storage material-integrated honeycomb adsorbent 10 through the holding member 60. Note that the holding structure of the heat storage material-integrated honeycomb adsorbent body 10 by the both holding members 54 and 56 will be described later.

  Next, the operation of the evaporated fuel processing device 30 (see FIG. 4) will be described. The evaporated fuel gas generated in the fuel tank is introduced into the main case body 34 via the tank port 43. The evaporated fuel gas passes through the gap between the adsorbents in the main case body 34, and then flows into the sub case body 36 via the connection port 45, the communication pipe 38, and the connection port 50. The evaporated fuel gas passes through the numerous vent holes 12 (see FIG. 1) of the heat storage material-integrated honeycomb adsorbent 10 and is then released from the atmosphere port 51 to the atmosphere side. At that time, the evaporated fuel in the evaporated fuel gas is adsorbed by the adsorbent in the main case body 34, and the rest is adsorbed by the heat storage material-integrated honeycomb adsorbent 10 in the sub case body 36. As a result, air that does not contain a fuel component is finally discharged from the atmospheric port 51 to the atmospheric side. Further, in the heat storage material-integrated honeycomb adsorbent 10, the temperature of the adsorbent 22 rises due to the adsorbed fuel adsorbed on the adsorbent 22, but the heat is transferred between the adsorbent 22 and the heat storage material 14. Since the temperature rise of the material 22 is suppressed, the adsorption performance of the adsorbent 22 is improved.

  On the other hand, during purge control during engine operation, if the purge control valve is opened by a control device (not shown), the negative pressure in the intake pipe is introduced into the main case body 34 via the purge port 44, thereby The air inside is sucked into the sub case body 36 from the atmospheric port 51 of the sub case body 36. The air passes through a large number of air holes 12 of the heat storage material-integrated honeycomb adsorbent 10, passes through the communication pipe 38, passes through the gaps between the adsorbents in the main case body 34, and then enters the purge port. Purge from 44 to the intake pipe. At that time, the evaporated fuel is desorbed from the adsorbent 22 and the heat storage material-integrated honeycomb adsorbent 10 and flows into the intake pipe. Further, in the heat storage material-integrated honeycomb adsorbent body 10, the temperature of the adsorbent 22 decreases due to the evaporative fuel being detached from the adsorbent 22, but the heat is transferred between the adsorbent 22 and the heat storage material 14. Since the temperature drop of the material 22 is suppressed, the separation performance of the adsorbent 22 is improved.

  Next, the holding structure of the heat storage material-integrated honeycomb adsorbent 10 in the fuel vapor processing apparatus 30 will be described. 5 is a cross-sectional view showing a V portion in FIG. 4, and FIG. 6 is a cross-sectional view showing a VI portion in FIG. Since the first holding member 54 and the second holding member 56 have basically the same configuration, the first holding member 54 will be described, and the second holding member 56 will be described as the first holding member. The same reference numerals are assigned to the same parts as those in 54, and the description thereof is omitted, and only different configurations are described.

  As shown in FIG. 5, the first holding member 54 is formed in an annular shape. The first holding member 54 includes an outer peripheral surface holding portion 64 that comes into contact with the outer peripheral surface of the heat storage material-integrated honeycomb adsorbent 10 and an end surface holding portion 65 that comes into contact with the end surface of the heat storage material-integrated honeycomb adsorbent 10. The cross section is formed in an L shape. Further, an escape recess 66 having an L-shaped cross section corresponding to a corner portion formed by the outer peripheral surface and the end surface of the heat storage material-integrated honeycomb adsorbent 10 is provided on the inner peripheral portion of the holding member 54. The escape recess 66 is continuous over the entire circumference of the holding member 54. Further, a tapered cylindrical lip seal portion 67 is formed at the free end portion (upper end portion in FIG. 5) of the outer peripheral surface holding portion 64. The lip seal portion 67 is formed in a lip shape in which the outer diameter gradually increases in the direction opposite to the insertion direction of the heat storage material-integrated honeycomb adsorbent 10 (upward in FIG. 5). Moreover, the 1st holding member 54 is formed with the rubber-like elastic material, and has elasticity and heat insulation.

  Further, the second holding member 56 is disposed so as to be vertically symmetrical with the first holding member 54 with the heat storage material-integrated honeycomb adsorbent 10 in between (see FIGS. 5 and 6). . Further, the lip seal portion 67 of the second holding member 56 has an outer diameter from the outer peripheral surface of the outer peripheral surface holding portion 64 toward the direction opposite to the insertion direction of the heat storage material-integrated honeycomb adsorbent 10 (upward in FIG. 6). It is formed in a tapered shape that gradually increases.

  Next, when the heat storage material-integrated honeycomb adsorbent 10 is inserted into the case cylinder portion 47 of the sub case body 36, the end of the heat storage material-integrated honeycomb adsorbent 10 on the insertion side (lower side in FIG. 4). The first holding member 54 is elastically fitted to the part (see FIG. 5). Further, the second holding member 54 is elastically fitted to the end portion on the opposite side (upper side in FIG. 4) of the heat storage material-integrated honeycomb adsorbent 10 (see FIG. 6).

  The heat storage material-integrated honeycomb adsorbent body 10 equipped with both the holding members 54 and 56 is inserted into the case tube portion 47 of the sub case body 36 prior to the attachment of the cover plate portion 48. Then, as shown in FIG. 5, in a state where a gap is formed between the outer peripheral surface of the outer peripheral surface holding portion 64 of the first holding member 54 and the inner peripheral surface of the case cylinder portion 47, The large diameter side end portion elastically contacts the inner peripheral surface of the case tube portion 47. Further, as shown in FIG. 6, in the state in which a gap is formed between the outer peripheral surface of the outer peripheral surface holding portion 64 of the second holding member 54 and the inner peripheral surface of the case cylinder portion 47, The large diameter side end portion elastically contacts the inner peripheral surface of the case tube portion 47. As a result, the heat storage material-integrated honeycomb adsorbent 10 is elastically held in the case tube portion 47 via the holding members 54 and 56. At the same time, the opposing peripheral surfaces of the case tube portion 47 and the heat storage material-integrated honeycomb adsorbent 10 are elastically sealed by the holding members 54 and 56. Note that the end surface holding portion 65 of the first holding member 54 is brought close to or in contact with the filter 58 (see FIG. 5). Further, the lower end surface of the pressing member 60 is brought into contact with the end surface holding portion 65 of the second holding member 56 (see FIG. 6). The first holding member and the second holding member correspond to “heat insulating member” and “seal member” in this specification.

  According to the fuel vapor processing apparatus 30 described above, the heat storage material-integrated honeycomb adsorbent 10 and the sub case body 36 (specifically, the case tube portion 47) are thermally insulated by the holding members 54 and 56 which are heat insulating members. Thereby, transfer of the heat | fever between both is interrupted | blocked. Therefore, the heat transfer performance between the adsorbent 22 and the heat storage material 14 in the heat storage material-integrated honeycomb adsorbent 10 can be improved, and the adsorption / desorption performance of the adsorbent 22 can be improved.

  Moreover, both holding members 54 and 56 have elasticity. Therefore, since the heat storage material-integrated honeycomb adsorber 10 is elastically held via the holding members 54 and 56 with respect to the case cylinder portion (casing) 47 of the sub case body 36, the heat storage material-integrated honeycomb adsorbent 10 can be prevented from being lost due to external forces such as vibration and impact.

  Further, the opposing peripheral surfaces of the heat storage material-integrated honeycomb adsorbent body 10 and the case cylinder portion (casing) 47 of the sub case body 36 are sealed by both holding members 54 and 56 which are seal members. Accordingly, the evaporated fuel gas is prevented from passing between the opposed peripheral surfaces of the heat storage material-integrated honeycomb adsorbent body 10 and the case cylinder portion (casing) 47 of the sub case body 36. For this reason, the evaporated fuel gas is entirely passed through the numerous vent holes 12 of the heat storage material-integrated honeycomb adsorbent 10. Therefore, the heat transfer performance between the adsorbent 22 and the heat storage material 14 in the heat storage material-integrated honeycomb adsorbent 10 can be improved, and the adsorption / desorption performance of the adsorbent 22 can be improved.

[Example 2]
A second embodiment of the present invention will be described. Since the present embodiment is a modification of the first embodiment, the changed portion will be described and redundant description will be omitted. FIG. 7 is a side view showing the fuel vapor processing apparatus 30 in a partially broken view.
As shown in FIG. 7, the evaporative fuel processing apparatus (denoted by reference numeral 110) of the present embodiment omits the sub case body 36 and the communication pipe 38 in the first embodiment (see FIG. 4), and the main case body. A case cylinder portion 47 (same reference numeral) having the same configuration as that of the case cylinder portion 47 of the sub case body 36 in the first embodiment is formed on the side portion including the connection port 45 in the 34 case body 40. The atmospheric port 51 and the cover cylinder part 52 are directed to the upper surface side of the case body 40, and the end part on the opening side (the cover plate part 48 side) of the case cylinder part 47 is spaced from the cover plate 41 by a predetermined distance. It is opened apart. Therefore, the inside of the case cylinder portion 47 communicates with the inside of the case body 40 through the gap on the lid plate 41 side. In the case tube portion 47, the heat storage material-integrated honeycomb adsorbent 10 is accommodated and elastically held via the holding members 54 and 56, as in the first embodiment. The main case body 34 corresponds to a “casing” in the present specification.

  A pressing member 112 having a porous shape is mounted in the central portion near the lower side of the case tube portion 47 instead of the pressing member 60 in the first embodiment. Similar to the pressing member 60, the pressing member 112 is in contact with the end surface holding portion 65 (see FIG. 6) of the second holding member 56. Further, a press plate 114 having air permeability is fitted into the lower surface opening of the case tube portion 47 so as to be movable up and down in a horizontal state. Between the pressing plate 114 and the cover plate 41, a lifting spring 115 made up of a coil spring that elastically pushes up each pressing plate 114 is interposed. In addition, a granular adsorbent 118 made of activated carbon is filled between the pressing member 112 and the pressing plate 114. Note that a breathable filter 116 is polymerized on the pressing plate 114.

[Example 3]
A third embodiment of the present invention will be described. Since the present embodiment is a modification of the first embodiment, the changed portion will be described and redundant description will be omitted. In addition, FIG. 8 is a block diagram which shows an evaporative fuel processing apparatus.
As shown in FIG. 8, the evaporative fuel processing apparatus (denoted by reference numeral 120) of the present embodiment is similar to the first embodiment in the intake passage on the upstream side of the throttle valve 124 in the intake pipe 122 of the engine. The heat storage material-integrated honeycomb adsorbent 10 is accommodated and elastically held via both holding members 54 and 56. An air cleaner 126 is disposed at the upstream end of the intake pipe 122. An injector (fuel injection valve) 128 is disposed at the engine side end of the intake pipe 122. The heat storage material-integrated honeycomb adsorbent 10 of the present embodiment adsorbs the evaporated fuel leaking from the nozzles of the injector 128 when the engine is stopped, and the evaporated fuel is released by the intake negative pressure during engine operation. The intake pipe 122 corresponds to a “casing” in this specification.

The present invention is not limited to the above-described embodiments, and modifications can be made without departing from the gist of the present invention. For example, the holding members 54 and 56 only need to have at least heat insulation .

1 is a perspective view showing a heat storage material-integrated honeycomb adsorbent according to Example 1. FIG. It is a schematic diagram which shows the manufacturing method 1 of a heat storage material integrated honeycomb adsorbent. It is a schematic diagram which shows the manufacturing method 2 of a heat storage material integrated honeycomb adsorbent. It is a side view which shows a partially broken fuel fuel processor. It is sectional drawing which shows the V section of FIG. It is sectional drawing which shows the VI section of FIG. It is a side view which shows the fuel vapor processing apparatus which concerns on Example 2 partially broken. It is a block diagram which shows the evaporated fuel processing apparatus which concerns on Example 3. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Heat storage material integrated honeycomb adsorber 12 Ventilation hole 14 Heat storage material 15 Phase change material 16 Microcapsule 22 Adsorbent 30 Evaporative fuel processing device 34 Main case body 36 Sub case body 54,56 Holding member (heat insulation member, seal member)
110 Evaporated Fuel Processing Device 120 Evaporated Fuel Processing Device

Claims (3)

An adsorbent capable of adsorbing and desorbing evaporated fuel, and a heat storage material-integrated honeycomb adsorbent with a honeycomb structure having a heat storage material in which a phase change material that absorbs and releases latent heat according to a temperature change is enclosed in a microcapsule; ,
A casing for accommodating the heat storage material-integrated honeycomb adsorbent in such a manner that a gas containing evaporated fuel can be circulated in a plurality of air holes of the honeycomb adsorbent;
A pair of heat insulating members that insulate between the casing and both ends of the heat storage material-integrated honeycomb adsorbent, and
The heat insulating member has an outer peripheral surface holding portion that contacts an outer peripheral surface of the heat storage material-integrated honeycomb adsorbent, and an end surface holding portion that contacts an end surface of the heat storage material-integrated honeycomb adsorbent ,
The heat insulating member has elasticity;
An evaporative fuel processing apparatus, wherein an escape recess corresponding to a corner portion formed by an outer peripheral surface and an end surface of the heat storage material-integrated honeycomb adsorbent is provided in an inner peripheral portion of the heat insulating member . It is an evaporative fuel processing apparatus of Claim 1 , Comprising:
The evaporative fuel processing apparatus is characterized in that a lip seal portion that elastically contacts the casing is formed on the outer peripheral surface holding portion of the heat insulating member. An adsorbent capable of adsorbing and desorbing evaporated fuel, and a heat storage material-integrated honeycomb adsorbent with a honeycomb structure having a heat storage material in which a phase change material that absorbs and releases latent heat according to a temperature change is enclosed in a microcapsule; ,
A casing for accommodating the heat storage material-integrated honeycomb adsorbent in such a manner that a gas containing evaporated fuel can be circulated in a plurality of air holes of the honeycomb adsorbent;
A pair of heat insulating members for insulating heat between the casing and both ends of the heat storage material-integrated honeycomb adsorbent;
With
The heat insulating member has an outer peripheral surface holding portion that contacts an outer peripheral surface of the heat storage material-integrated honeycomb adsorbent, and an end surface holding portion that contacts an end surface of the heat storage material-integrated honeycomb adsorbent,
The heat insulating member has elasticity;
The outer peripheral surface holding portion of the heat insulating member is formed with a lip seal portion that elastically contacts the casing.
The evaporative fuel processing apparatus characterized by the above-mentioned.

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