JP6078285B2 - Case penetration structure - Google Patents

Description

  The present invention relates to a through-hole structure of a housing in which component insertion holes are formed in advance.

In Patent Document 1, in a power generation device using a fuel cell, fuel (off-gas) that has not been used for power generation by the fuel cell is burned in a combustion section in the casing.
Moreover, in patent document 1, the component insertion hole is penetratingly formed in the housing | casing (outer wall), and the insulator tube (stepped insulator tube) which has a collar part is inserted in this component insertion hole. A sealing material (seal packing) is interposed between the flange portion of the insulator tube and the housing.
Moreover, in patent document 1, a part of fixing plate is contacting the surface on the opposite side to the side which contacts a sealing material among the collar parts of an insulator pipe, and another part of this fixing plate is made into the housing | casing. The insulator tube is fixed to the housing by being brought into contact with the outer surface and screwed.

JP 2008-135351 A

  However, when the fixing plate is screwed to the casing as described above, if the screw penetrates the casing and the tip of the screw is exposed in the casing, it is generated in the combustion section in the casing. There is a possibility that the high-temperature exhaust gas that has been discharged passes through a slight gap between the screw and the casing and leaks out of the casing.

As a countermeasure, it is conceivable to prevent the tip portion of the screw from being exposed in the casing by sufficiently increasing the thickness of the casing so that the screw does not penetrate the casing.
However, as the thickness of the casing increases, the weight of the casing increases. This increases material costs, which can result in increased manufacturing costs.

  The present invention has been made in view of such a situation, and an object of the present invention is to suppress the leakage (leakage) of exhaust gas from the inside of the housing to the outside while suppressing an increase in weight.

For this reason, in the first aspect of the present invention, the casing is inserted into the component insertion hole of the casing from the outside as a casing penetrating structure including a combustion section for burning fuel and having a component insertion hole formed in advance. A component main body that penetrates the body and a penetrating component that includes a flange projecting from the outer peripheral surface of the component main body and an outer peripheral edge of the component insertion hole on the outer surface of the housing The mounting base is fixed to the outer surface of the housing by welding, and the holding base is screwed to the other side of the mounting base and presses the flange from the other side to the one side. , interposed between the fixed portion defining a space for accommodating the flange portion with the outer peripheral portion, and the flange sealing material and a flange portion Ru is interposed between the fixed portion, a mounting base portion and the pressing portion And a fixed part sealing material . A communication hole that communicates the inside of the housing with the space is formed in advance in the housing, and a fastening member that is inserted into the communication hole and passes through the housing is inserted into the housing and an insertion inserted in the housing. The members are fastened and fixed to each other.
In the second aspect of the present invention, the casing is inserted into the component insertion hole of the casing from the outside as a through-hole structure of the casing that includes the combustion portion that burns the fuel and the component insertion hole is formed in advance. A component main body that penetrates the outer peripheral surface of the component main body, a penetrating component that includes a flange protruding from the outer peripheral surface of the component main body, and an outer peripheral edge of the component insertion hole on the outer surface of the housing. A mounting base portion having one side fixed to the outer surface of the housing, and a pressing portion fixed to the other side of the mounting base portion and pressing the flange portion toward the one side from the other side, A fixing part that partitions and forms a space to be accommodated together with the outer peripheral edge part, a flange sealing material interposed between the flange part and the fixing part, and a fixing part interposed between the mounting base and the pressing part And a sealing material. A communication hole that communicates the inside of the housing with the space is formed in advance in the housing, and a fastening member that is inserted into the communication hole and passes through the housing is inserted into the housing and an insertion inserted in the housing. The members are fastened and fixed to each other.

  According to the present invention, the fixing portion that fixes the penetrating component to the housing includes the attachment base portion and the pressing portion. Thereby, for example, one side of the mounting base can be fixed by welding to the outer surface of the casing, and the pressing portion can be screwed to the other side of the mounting base. The penetrating component can be fixed to the housing without being directly screwed to the housing. Therefore, as described above, the penetrating component can be fixed to the casing without increasing the thickness of the casing, so that an increase in the weight of the casing can be suppressed.

  Further, according to the present invention, the flange sealing material is interposed between the flange and the fixed portion, or between the flange and the outer peripheral edge of the component insertion hole on the outer surface of the housing. Be dressed. Thereby, since the clearance gap between a housing | casing and a fixing | fixed part, and a penetration component is sealed by the collar part sealing material, the leak of the waste gas from the inside of a housing | casing to the exterior can be suppressed.

The figure which shows schematic structure of the 1st example of a fuel cell apparatus. The figure which shows the penetration part structure of the housing | casing in 1st Embodiment of this invention. The perspective view which shows the penetration part structure of the housing | casing in embodiment same as the above The figure which shows the penetration part structure of the housing | casing in 2nd Embodiment of this invention. The figure which shows the penetration part structure of the housing | casing in 3rd Embodiment of this invention. The figure which shows the penetration part structure of the housing | casing in 4th Embodiment of this invention. The figure which shows the penetration part structure of the housing | casing in 5th Embodiment of this invention. The figure which shows the penetration part structure of the housing | casing in 6th Embodiment of this invention. The figure which shows the penetration part structure of the housing | casing in 7th Embodiment of this invention. The figure which shows the penetration part structure of the housing | casing in 8th Embodiment of this invention. The figure which shows the penetration part structure of the housing | casing in 9th Embodiment of this invention. The figure which shows the penetration part structure of the housing | casing in 10th Embodiment of this invention. The figure which shows the penetration part structure of the housing | casing in 11th Embodiment of this invention The figure which shows schematic structure of a water heater The figure which shows schematic structure of the 2nd example of a fuel cell apparatus. The figure which shows the penetration part structure of the housing | casing in 12th Embodiment of this invention. The figure which shows the penetration part structure of the housing | casing in 13th Embodiment of this invention. The figure which shows the penetration part structure of the housing | casing in 14th Embodiment of this invention. The figure which shows the penetration part structure of the housing | casing in 15th Embodiment of this invention. The figure which shows the penetration part structure of the housing | casing in 16th Embodiment of this invention. The figure which shows schematic structure of the 3rd example of a fuel cell apparatus.

Embodiments of the present invention will be described below with reference to the drawings.
In the description below, in the description of the first to sixteenth embodiments of the present invention, “one side” and “other side” of the present invention correspond to “lower side” and “upper side”, respectively. The correspondence relationship between the “one side” and the “other side” of the present invention is not limited to this, and the “one side” may be a side opposite to the “other side”.

  FIG. 1 shows a schematic configuration of a first example of a fuel cell device. FIG. 2A shows a through-hole structure of a housing in the first embodiment of the present invention.

As shown in FIG. 1, the fuel cell device 1 is configured by arranging a reforming unit 3, a combustion unit 4, and a power generation unit 5 in a housing 2. In other words, the housing 2 includes the reforming unit 3, the combustion unit 4, and the power generation unit 5.
The housing 2 is a box-shaped outer frame body made of metal.

The fuel cell device 1 is provided with a raw fuel supply passage 11 for supplying raw fuel (hydrocarbon fuel or the like) from the outside of the housing 2 to the reforming unit 3.
The raw fuel supply passage 11 includes a metal pipe 12. The pipe 12 passes through the housing 2 by being inserted into a component insertion hole 13 that is formed through the housing 2 in advance. In the through portion 14 of the housing 2 through which the pipe 12 penetrates, the through-hole structure of the housing according to the present invention is applied in order to ensure sealing performance (airtightness) without welding the pipe 12 to the housing 2. obtain.

The fuel cell device 1 is provided with a reforming water supply passage 15 that supplies water for steam reforming (reforming water) from the outside of the housing 2 to the reforming unit 3.
The reformed water supply passage 15 includes a metal pipe 16. The pipe 16 is inserted into a component insertion hole 17 that is formed through the housing 2 in advance and penetrates the housing 2. In the penetrating portion 18 of the housing 2 through which the pipe 16 penetrates, the penetrating portion structure of the housing according to the present invention can be applied in order to ensure sealing performance without welding the pipe 16 to the housing 2.

  The reforming unit 3 is configured by filling a chamber in a case formed of metal with a reforming catalyst, and the raw fuel supply passage 11 and the reforming water supply passage 15 are connected. Therefore, the reforming unit 11 reforms the raw fuel by a steam reforming reaction in the presence of water vapor obtained by vaporizing water to generate a hydrogen-rich fuel gas (reformed gas). Here, this reformed gas corresponds to the hydrogen-containing fuel of the present invention. Instead of the steam reforming reaction, the reformed gas may be generated by a technique known as a hydrogen generation technique such as a partial oxidation reaction or an autothermal reforming reaction, or a combination of these reforming reactions. In that case, the fuel cell device 1 is provided with an oxidant supply passage (not shown) for supplying an oxidant from the outside of the housing 2 to the reforming unit 3.

The fuel cell device 1 includes a reforming unit temperature measuring unit 19 that measures the temperature of the reforming unit 3.
The reforming unit temperature measurement unit 19 includes a metal protection tube 20 and a thermocouple (not shown) disposed in the protection tube 20. The protective tube 20 passes through the housing 2 by being inserted into a component insertion hole 21 that is formed through the housing 2 in advance. In the penetrating portion 22 of the housing 2 through which the protective tube 20 penetrates, according to the present invention, the protective tube 20 is not welded to the housing 2 and the sealing performance between the protective tube 20 and the housing 2 is ensured. A through-hole structure of the housing can be applied.

  The power generation unit 5 includes a fuel cell 50. Hereinafter, a solid oxide fuel cell (SOFC) will be described as an example of the fuel cell 50, but the type of fuel cell constituting the power generation unit 5 is not limited thereto.

  The fuel cell stack (not shown) constituting the fuel cell 50 is an assembly formed by connecting a plurality of solid oxide fuel cells (not shown) in series, for example, and each cell is a solid oxide. A fuel electrode (anode) and an air electrode (cathode) are laminated on both surfaces of the electrolyte, and the reformed gas is supplied to the fuel electrode through the reformed gas supply passage 51 from the outlet of the reformer 3, and the air electrode is supplied to the air electrode. Air that is an oxidant is supplied from an inlet 41 provided in the housing 2 in advance via a cathode air supply passage (not shown).

Accordingly, in each of the fuel cells constituting the fuel cell 50, an electrode reaction of the following formula (1) occurs at the air electrode, and an electrode reaction of the following formula (2) occurs at the fuel electrode, Electricity is generated.
Air electrode: 1 / 2O ₂ + 2e ⁻ → O ²⁻ (solid electrolyte) (1)
Fuel electrode: O ²⁻ (solid electrolyte) + H ₂ → H ₂ O + 2e ⁻ (2)

The fuel cell device 1 includes a current extraction member 24 that extracts current from the power generation unit 5 (fuel cell 50) to the outside of the housing 2.
The current extraction member 24 is covered with an insulator 25 at the exterior. The current extraction member 24 passes through the housing 2 by being inserted into a component insertion hole 26 that is formed through the housing 2 in advance. In the penetrating portion 27 of the housing 2 through which the current extraction member 24 penetrates, the insulation between the current extraction member 24 and the housing 2 is secured by the insulator body 25, while the insulator body 25 and the housing 2 are interposed. In order to ensure the sealing performance, the through-hole structure of the housing according to the present invention can be applied.

The fuel cell device 1 includes a power generation unit temperature measurement unit 28 that measures the temperature of the power generation unit 5.
The power generation unit temperature measurement unit 28 includes a metal protection tube 29 and a thermocouple (not shown) disposed in the protection tube 29. The protective tube 29 is inserted into the component insertion hole 30 that is formed through the housing 2 in advance and penetrates the housing 2. In the penetrating portion 31 of the housing 2 through which the protective tube 29 penetrates, according to the present invention, the protective tube 29 is not welded to the housing 2 and the sealing performance between the protective tube 29 and the housing 2 is ensured. A through-hole structure of the housing can be applied.

The fuel cell device 1 includes an ignition heater (for example, a ceramic heater) 32 serving as an ignition source for the combustion unit 4.
The exterior of the ignition heater 32 is covered with an insulator 33. The ignition heater 32 passes through the housing 2 by being inserted into a component insertion hole 34 that is formed through the housing 2 in advance. In the penetration part 35 of the housing 2 through which the ignition heater 32 penetrates, the insulation between the ignition heater 32 and the housing 2 is secured by the insulator 33, and the seal between the insulator 33 and the housing 2 is secured. In order to secure the performance, the through-hole structure of the housing according to the present invention can be applied.

  The combustion unit 4 burns excess reformed gas (anode offgas) in the fuel cell 50 in the presence of excess air, and maintains the reforming unit 3 and the fuel cell 50 in a high temperature state by the combustion heat. In addition, the combustion part 4 here contains not only the combustion part which has the division as an object but the combustion part as a space which does not have the division as an object.

The fuel cell device 1 includes a combustion unit temperature measurement unit 36 that measures the temperature of the combustion unit 4.
The combustor temperature measuring unit 36 includes a metal protective tube 37 and a thermocouple (not shown) disposed in the protective tube 37. The protective tube 37 is inserted into a component insertion hole 38 that is formed through the housing 2 in advance and penetrates the housing 2. In the through portion 39 of the housing 2 through which the protective tube 37 penetrates, the through portion structure of the housing according to the present invention can be applied in order to ensure the sealing performance without welding the protective tube 37 to the housing 2.

  The exhaust gas generated in the combustion unit 4 is discharged out of the housing 2 through an exhaust port 42 provided in the housing 2 in advance.

  FIG. 2A shows the structure of the through-hole 35 through which the ignition heater 32 and the insulator 33 penetrate in the housing 2.

The ignition heater 32 that is an electrical component is, for example, a round bar-shaped ceramic heater.
The insulator body 33 includes a cylindrical main body portion 33a and a flange portion 33b that protrudes outward in the radial direction from the outer peripheral surface of the main body portion 33a.

An ignition heater 32 is inserted into the main body 33 a of the insulator 33.
The body 33 a of the insulator 33 is inserted into the component insertion hole 34 of the housing 2 from the outside of the housing 2 and penetrates the housing 2.

Here, the main body 33a of the insulator 33 corresponds to the “component main body” of the present invention.
The insulator 33 and the ignition heater 32 constitute the “penetrating component” of the present invention.

  The fixing portion 101 for fixing the insulator body 33 with the ignition heater 32 attached thereto to the housing 2 includes a cylindrical mounting base portion 102 and an annular plate-like pressing portion 103.

The mounting base 102 is disposed on the upper surface of the housing 2 so as to surround the outer peripheral edge 104 of the component insertion hole 34 on the upper surface (outer surface) of the housing 2.
The mounting base portion 102 has a predetermined thickness, and the upper surface thereof is a mating surface with the lower surface of the pressing portion 103.
The lower surface of the mounting base 102 is in surface contact with the upper surface of the housing 2, and the lower end is welded and fixed to the upper surface of the housing 2.

A plurality of screw holes 102 a having an upper surface opening are formed in the mounting base 102 at intervals in the circumferential direction of the mounting base 102.
On the inner side of the attachment base portion 102, the flange portion 33 b of the insulator body 33 is located on the outer peripheral edge portion 104.

  A flange seal material 105 is interposed between the flange 33 b of the insulator body 33 and the outer peripheral edge 104. The buttock seal material 105 is made of, for example, resin or expanded graphite.

A through hole 103 a is formed through the holding portion 103 at a position corresponding to the screw hole 102 a of the attachment base 102.
The lower surface of the inner edge portion of the pressing portion 103 is in surface contact with the upper surface of the flange portion 33 b of the insulator body 33.

When the screw 106 is screwed to the mounting base 102 by screwing the screw 106 into the screw hole 102a of the mounting base 102 from the upper side of the pressing portion 103 through the through hole 103a of the pressing portion 103, the screw fixing By the tightening force, the pressing portion 103 presses the flange portion 33 b and the flange portion sealing material 105 of the insulator body 33 from the upper side to the lower side and presses them against the outer peripheral edge portion 104. In other words, the flange portion 33 b and the flange portion sealing material 105 of the insulator body 33 are sandwiched between the pressing portion 103 and the outer peripheral edge portion 104.
At this time, the fixing portion 101 defines a space 107 for accommodating the flange portion 2 together with the outer peripheral edge portion 104.

  In this way, the fixing portion 101 fixes the insulator 33 with the ignition heater 32 inserted thereto to the housing 2. Moreover, since the seal | sticker property between the lower surface of the collar part 33b of the insulator 33 and the upper surface of the housing | casing 2 is ensured by the collar part sealing material 105, the leak of the exhaust gas in the housing | casing 2 is caused by the collar part sealing material. 105 is suppressed.

  By the way, the structure of the penetration part 35 of the housing | casing 2 shown to FIG. 2A is applicable to each structure of the penetration parts 14, 18, 22, 27, 31, and 39 of the housing | casing 2. FIG.

  When applied to the structure of the penetrating portion 14 of the housing 2, the pipe 12 functioning as the “component main body portion” of the present invention is provided with a flange portion (not shown) protruding outward from the outer peripheral surface thereof. Therefore, the “penetrating component” of the present invention may be constituted by the flange portion and the pipe 12, and this may be used in place of the insulator 33 and the ignition heater 32 in FIG. 2A.

  When applied to the structure of the penetrating portion 18 of the housing 2, the piping 16 functioning as the “component main body portion” of the present invention is provided with a flange portion (not shown) protruding outward from the outer peripheral surface thereof. Therefore, the “penetrating component” of the present invention may be configured by the flange portion and the pipe 16, and this may be used in place of the insulator body 33 and the ignition heater 32 in FIG. 2A.

  When applied to the structure of the penetrating portion 22 of the housing 2, the protection tube 20 functioning as the “component main body portion” of the present invention is provided with a flange portion (not shown) protruding outward from the outer peripheral surface thereof. Therefore, if this flange part, the protective tube 20, and the thermocouple (not shown) constitute the “penetrating component” of the present invention, this can be used in place of the insulator 33 and the ignition heater 32 in FIG. 2A. Good.

  When applied to the structure of the penetrating portion 27 of the housing 2, similarly to the insulator body 33, an insulator (not shown) is provided on the insulator body 25, and the insulator body 25 is replaced with the insulator body 33. That's fine. In this case, the current extraction member 24 inserted into the insulator body 25 corresponds to the “electric part” of the present invention.

  When applied to the structure of the penetrating portion 31 of the housing 2, the protective tube 29 functioning as the “component main body portion” of the present invention is provided with a flange portion (not shown) protruding outward from the outer peripheral surface thereof. Thus, if this saddle part, the protective tube 29, and the thermocouple (not shown) constitute the “penetrating component” of the present invention, this can be used in place of the insulator 33 and the ignition heater 32 in FIG. 2A. Good.

  When applied to the structure of the penetrating portion 39 of the housing 2, the protective tube 37 functioning as the “component main body portion” of the present invention is provided with a flange portion (not shown) protruding outward from the outer peripheral surface thereof. Thus, if this saddle part, the protective tube 37, and the thermocouple (not shown) constitute a “penetrating component” of the present invention, this can be used in place of the insulator 33 and the ignition heater 32 in FIG. 2A. Good.

  By the way, when the fixing plate is screwed to the casing as in the above-mentioned Patent Document 1, if the screw penetrates the casing and the tip of the screw is exposed in the casing, There is a possibility that the high-temperature exhaust gas generated in the combustion section leaks out of the casing through a slight gap between the screw and the casing.

As a countermeasure, it is considered to prevent the tip of the screw from being exposed inside the housing by airtight welding a cap nut to the inner surface of the housing so that the screw hole of the housing is closed from the inside of the housing. It is done.
However, since the welded portion of the cap nut becomes hot due to the exhaust gas, it is necessary to use an expensive heat-resistant material as the material of the cap nut, and therefore the manufacturing cost may increase. Further, since it is necessary to hermetically weld the cap nuts corresponding to the number of screws used for fixing the fixing plate, a considerable welding time is required, and a considerable time may be required for the airtightness inspection of the welding. There is.

  In this regard, according to the present embodiment, the fixing portion 101 that fixes the insulator 33 (penetrating component) to the housing 2 includes the mounting base portion 102 and the pressing portion 103. Accordingly, the lower end portion of the mounting base portion 102 can be fixed by welding to the upper surface of the housing 2, and the pressing portion 103 can be screwed to the upper side of the mounting base portion 102. The insulator body 33 can be fixed to the housing 2 without being screwed directly to the body 2. Therefore, since the insulator body 33 can be fixed to the housing 2 without using an expensive cap nut, the manufacturing cost can be suppressed. Further, since only the lower end portion of the mounting base portion 102 is fixed to the upper surface of the housing 2 by welding, the welding operation and its airtightness inspection can be performed in a relatively short time.

  According to the present embodiment, the component insertion hole 34 of the housing 2 is externally provided as a structure of the through portion 35 of the housing 2 including the combustion portion 4 for burning fuel and having the component insertion hole 34 formed in advance. An insulator body 33 (penetrating component) configured to include a main body portion 33a (component main body portion) inserted through the housing 2 and a flange portion 33b protruding from the outer peripheral surface of the main body portion 33a; A mounting base 102 that is disposed so as to surround the outer peripheral edge 104 of the component insertion hole 34 on the upper surface (outer surface) of the body 2 and whose lower side (one side) is fixed to the upper surface (outer surface) of the housing 2; It is comprised including the holding | suppressing part 103 fixed to the upper side (other side) of the attachment base 102, and pressing the collar part 33b toward the lower side (one side) from the upper side (other side), and accommodates the collar part 2. A fixing part 101 for partitioning the space 107 together with the outer peripheral edge part 104, and a collar part Comprises a flange portion sealing member 105 interposed between the 3b and the peripheral edge 104. As a result, the fixing portion 101 that fixes the insulator 33 to the housing 2 has a separate structure of the mounting base 102 and the pressing portion 103, so that the lower side of the mounting base 102 is placed on the upper surface (outer surface) of the housing 2. Since it can be fixed by welding and the pressing portion 103 can be screwed to the upper side of the mounting base 102, the insulator body 33 can be attached to the housing without being screwed directly to the housing as in Patent Document 1. It can be fixed to the body 2. Therefore, since the insulator 33 can be fixed to the housing 2 without increasing the thickness of the housing 2 for screwing to the housing 2, an increase in the weight of the housing 2 is suppressed. Can do.

  In addition, according to the present embodiment, the gap between the housing 2 and the insulator 33 is sealed by the flange sealing material 105, so that leakage of exhaust gas from the inside of the housing 2 to the outside can be suppressed. it can.

  Further, according to the present embodiment, the penetrating component includes the insulator 33 including the flange 33b and the cylindrical main body 33a (component main body), and the ignition heater 32 (electrical component) inserted into the main body 33. And comprising. Thereby, the insulation between the housing | casing 2 and the ignition heater 32 is securable with the insulator 33. FIG. Further, the flange 33b of the insulator 33 may be broken if it is screwed directly to the housing 2. However, according to the present embodiment, the flange 33b of the insulator 33 is fixed by the fixing portion 101. Since it is pressed and fixed to the housing 2, it is possible to suppress the occurrence of insulator cracks.

  Further, according to the present embodiment, the housing 2 includes the fuel cell 50 (power generation unit 5) that generates power using the hydrogen-containing fuel and the oxidant, and the combustion unit 4 has surplus hydrogen in the fuel cell 50. Burn the contained fuel. Thereby, the combustion heat in the combustion part 4 can be used for maintaining the high temperature state of the fuel cell 50.

  Further, according to the present embodiment, the lower side (one side) of the attachment base 102 is fixed to the upper surface (outer surface) of the housing 2 by welding. Thereby, a screw hole for screwing with the pressing portion 103 can be formed in the mounting base portion 102 instead of the housing 2.

  In the above description of the present embodiment, “one side” and “other side” correspond to “lower side” and “upper side”, respectively, but “one side” and “other side” correspond to each other. The relationship is not limited to this, and the “one side” may be the side opposite to the “other side”. FIG. 2B is a perspective view when the present embodiment is applied to the side wall of the housing 2.

  FIG. 3 shows a through-hole structure of a housing in the second embodiment of the present invention.

Differences from the first embodiment shown in FIG. 2A will be described.
In the first embodiment shown in FIG. 2A, the flange seal material 105 is interposed between the flange 33b of the insulator body 33 and the outer peripheral edge 104, while in the present embodiment shown in FIG. A flange seal material 105 is interposed between the flange 33 b of the insulator body 33 and the pressing portion 103.

  In the present embodiment, a fixing portion sealing material 108 is interposed between the attachment base portion 102 and the pressing portion 103. The fixed portion sealing material 108 is made of, for example, resin or expanded graphite. In the present embodiment, the heel seal material 105 and the fixed seal material 108 are separate.

  The distance between the upper surface of the mounting base 102 and the upper surface (outer surface) of the housing 2 is longer than the distance between the upper surface of the flange 33 b of the insulator 33 and the upper surface of the housing 2. That is, the height of the attachment base 102 is higher than the height of the flange 33b of the insulator 33 with the upper surface of the housing 2 as a reference plane. For this reason, the thickness of the fixing portion sealing material 108 is thinner than the thickness of the buttock sealing material 105.

  In this embodiment, the sealing performance between the upper surface of the flange portion 33 b of the insulator 33 and the lower surface of the pressing portion 103 of the fixing portion 101 is ensured by the flange seal material 105. Further, the sealing performance between the upper surface of the attachment base 102 and the lower surface of the pressing portion 103 is ensured by the fixing portion seal material 108. Moreover, the sealing performance between the lower surface of the attachment base 102 and the upper surface of the housing 2 is ensured by welding. Therefore, even if the exhaust gas in the housing 2 passes through the gap between the insulator 33 and the housing 2 and reaches the space 107, the leakage of the exhaust gas from the space 107 causes the mounting base 102 and the housing 2 to leak. Are fixed by welding, the heel seal material 105, and the fixed seal material 108.

In particular, according to the present embodiment, the collar seal material 105 is interposed between the collar 33 b of the insulator body 33 and the pressing part 103 of the fixing part 101. Thereby, since the clearance gap between the holding | suppressing part 103 of the fixing | fixed part 101 and the insulator 33 is sealed by the ridge part sealing material 105, the leak of the waste gas from the space 107 in the fixing | fixed part 101 can be suppressed. .
Further, according to the present embodiment, the fixing portion sealing material 108 is interposed between the attachment base portion 102 and the pressing portion 103. Thereby, the leak of the exhaust gas resulting from the separate structure of the fixing | fixed part 101 can be suppressed.

  Further, according to the present embodiment, the collar seal material 105 is interposed between the upper surface of the collar part 33 b of the insulator body 33 and the lower surface of the pressing part 103 of the fixing part 101. Thus, since the flange portion 33b of the insulator 33 is disposed between the upper surface of the housing 2 and the lower surface of the flange seal material 105, direct transmission from the housing 2 to the flange seal material 105 is achieved. Heat can be suppressed, and as a result, the temperature condition of the heel seal material 105 can be relaxed.

  FIG. 4 shows a through-hole structure of a housing in the third embodiment of the present invention.

Differences from the second embodiment shown in FIG. 3 will be described.
In the second embodiment shown in FIG. 3, the heel seal material 105 and the fixed portion seal material 108 are formed separately, whereas in the present embodiment shown in FIG. 4, the heel seal material 105 and the fixed portion seal are formed. The material 108 is integrally formed by the seal material 110. That is, the sealing material 110 is configured to include a portion that functions as the flange sealing material 105 and a portion that functions as the fixed portion sealing material 108.

  In the present embodiment, the distance between the upper surface of the attachment base 102 and the upper surface of the housing 2 is equal to the distance between the upper surface of the flange 33 b of the insulator 33 and the upper surface of the housing 2. In other words, the height of the mounting base 102 is equal to the height of the flange 33b of the insulator 33 with the upper surface of the housing 2 as the reference plane. Therefore, the thickness of the fixing portion sealing material 108 and the thickness of the flange portion sealing material 105 can be made equal.

  In particular, according to the present embodiment, since the flange seal material 105 and the fixed seal material 108 are integrally formed, the number of parts can be reduced.

  Further, according to the present embodiment, with respect to the sealing material 110, the portion functioning as the fixed portion sealing material 108 and the portion functioning as the buttock sealing material 105 are configured by sheet-like sealing materials having the same thickness. Therefore, the sealing function of the fixed part sealing material 108 and the sealing function of the collar sealing material 105 can be realized by using one sealing material 110 having a relatively simple configuration.

  FIG. 5 shows a through-hole structure of a housing in the fourth embodiment of the present invention.

Differences from the first embodiment shown in FIG. 2A will be described.
In the present embodiment, the mounting base portion 102 includes a cylindrical wall portion 121, an upper flange portion 122 projecting radially inward from the upper end portion of the wall portion 121, and a radially outward portion from the lower end portion of the wall portion 121. And a projecting lower flange portion 123.

The wall portion 121 extends from the lower side to the upper side, and is disposed on the upper surface of the housing 2 so as to surround the outer peripheral edge portion 104 of the component insertion hole 34 on the upper surface of the housing 2.
The attachment base 102 is fixed to the upper surface of the housing 2 by welding at the outer edge 123 a of the lower flange portion 123 with the lower surface of the lower flange portion 123 being in surface contact with the upper surface of the housing 2.

An upper surface of the upper flange portion 122 is a mating surface with the lower surface of the pressing portion 103.
A screw hole 124 is formed through the upper flange portion 122 at a position corresponding to each through hole 103 a of the pressing portion 103.

  In the present embodiment, the screw 106 is screwed into the screw hole 124 of the upper flange portion 122 of the mounting base 102 from the upper side of the pressing portion 103 through the through hole 103a of the pressing portion 103, whereby the pressing portion 103 is attached to the mounting base. Screw to 102.

  In particular, according to the present embodiment, the mounting base portion 102 has a cylindrical wall portion 121 extending from the lower side (one side) to the upper side (the other side), and the wall portion 121 from the upper side of the wall portion 121. And an upper flange portion (first flange portion) 122 projecting inward, and the pressing portion 103 is fixed to the upper flange portion 122. Thereby, compared with the above-mentioned 1st Embodiment, since the attachment base 102 can be comprised with a thin member, the weight reduction of the attachment base 102 is realizable.

  In the present embodiment, the mounting base portion 102 includes the lower flange portion 123, but the lower flange portion 123 can be omitted. In this case, the lower end of the wall 121 of the attachment base 102 is hermetically welded to the upper surface of the housing 2.

  FIG. 6 shows a through-hole structure of a housing in the fifth embodiment of the present invention.

Differences from the fourth embodiment shown in FIG. 5 will be described.
In the present embodiment, the upper flange portion 122 projects radially outward from the upper end portion of the wall portion 121, while the lower flange portion 123 projects radially inward from the lower end portion of the wall portion 121.

The attachment base portion 102 is welded and fixed to the upper surface of the housing 2 at the inner edge portion 123b of the lower flange portion 123 with the lower surface of the lower flange portion 123 in surface contact with the upper surface of the housing 2.
A screw hole 124 is formed through the upper flange portion 122 at a position corresponding to each through hole 103 a of the pressing portion 103.

  In the present embodiment, the screw 106 is screwed into the screw hole 124 of the upper flange portion 122 of the mounting base 102 from the upper side of the pressing portion 103 through the through hole 103a of the pressing portion 103, whereby the pressing portion 103 is attached to the mounting base. Screw to 102.

  In particular, according to the present embodiment, the attachment base portion 102 includes the lower flange portion 123 that projects from the lower side of the wall portion 121 to the inside of the wall portion 121. The lower flange portion 123 is welded and fixed to the upper surface of the housing 2 at the inner edge portion 123b. Thereby, the welding line which weld-fixes the lower flange part 123 and the housing | casing 2 can be shortened compared with the above-mentioned 4th Embodiment.

  In the present embodiment, the mounting base portion 102 includes the lower flange portion 123, but the lower flange portion 123 can be omitted. In this case, the lower end of the wall 121 of the attachment base 102 is hermetically welded to the upper surface of the housing 2.

  FIG. 7 shows a through-hole structure of a housing in the sixth embodiment of the present invention.

Differences from the fifth embodiment shown in FIG. 6 will be described.
The lower flange portion 123 is connected to a first projecting portion 131 projecting radially inward from the lower end portion of the wall portion 121, and an inner edge portion 131 a of the first projecting portion 131. A cylindrical portion 132 extending toward the top and a second projecting portion 133 projecting radially inward from the upper end of the cylindrical portion 132 are configured.

The attachment base portion 102 is welded to the upper surface of the housing 2 at the outer edge portion 131b of the first overhanging portion 131 with the lower surface of the first overhanging portion 131 of the lower flange portion 123 being in surface contact with the upper surface of the housing 2. It is fixed.
The lower surface of the flange seal material 105 is in surface contact with the upper surface of the second projecting portion 133 of the lower flange portion 123.

  Here, the lower flange portion 123 including the first overhang portion 131, the cylindrical portion 132, and the second overhang portion 133 corresponds to the “second flange portion” of the present invention, and Of these, a portion between the upper flange portion (first flange portion) 122 and the housing 2 protrudes inward of the wall portion 121.

  A space 134 is defined below the flange seal material 105 by the cylindrical portion 132 and the second overhang portion 133 of the lower flange portion 123 and the housing 2 (outer peripheral edge portion 104).

  When the pressing portion 103 is screwed to the mounting base 102 by screwing the screw 106 into the screw hole 124 of the upper flange portion 122 of the mounting base 102 from the upper side of the pressing portion 103 through the through hole 103a of the pressing portion 103. By the tightening force of this screwing, the pressing portion 103 presses the flange portion 33b of the insulator body 33 and the flange portion sealing material 105 from the upper side to the lower side and presses them against the second projecting portion 133 of the lower flange portion 123. . In other words, the flange part 33 b of the insulator body 33 and the flange part sealing material 105 are sandwiched between the pressing part 103 and the second overhang part 133 of the lower flange part 123.

  In this embodiment, the sealing performance between the lower surface of the flange portion 33 b of the insulator 33 and the upper surface of the second overhang portion 133 of the lower flange portion 123 is ensured by the flange seal material 105. Moreover, the sealing property between the lower surface of the lower flange part 123 and the upper surface of the housing | casing 2 is ensured by welding. Therefore, even if the exhaust gas in the housing 2 passes through the gap between the insulator 33 and the housing 2 and reaches the space 134, the leakage of the exhaust gas from the space 134 causes the lower flange portion 123 and the housing to leak. 2 and the flange seal material 105 are suppressed.

  In particular, according to the present embodiment, the mounting base 102 includes the second flange that protrudes inward from the portion of the wall 121 between the upper flange (first flange) 122 and the housing 2. Portion (the lower flange portion 123 including the first overhang portion 131, the cylindrical portion 132, and the second overhang portion 133), and the flange portion 33b of the insulator body 33 includes the pressing portion 103 and the second portion. It is clamped by the overhang part 133. Further, a space 134 is defined between the second projecting portion 133 and the housing 2. That is, the second overhang portion 133 has a gap between the housing 2. Accordingly, since the buttock seal material 105 can be disposed away from the housing 2, direct heat transfer from the housing 2 to the heel seal material 105 can be suppressed. The temperature condition of the material 105 can be relaxed.

  In the present embodiment, a convex portion (not shown) protruding upward is formed in the central portion of the pressing portion 103, and in this convex portion, the collar portion 33b of the insulator 33, the collar portion sealing material 105, and The space 134 shown in FIG. 7 can be expanded by positioning the second projecting portion 133 of the lower flange portion 123. Thereby, since the collar sealing material 105 can be arranged further away from the housing 2, direct heat transfer from the housing 2 to the collar sealing material 105 can be further suppressed, and as a result The temperature condition of the partial sealing material 105 can be further relaxed.

  FIG. 8 shows a through structure of a housing in the seventh embodiment of the present invention.

Differences from the second embodiment shown in FIG. 3 will be described.
In the present embodiment, the mounting base portion 102 includes a cylindrical wall portion 121, an upper flange portion 122 projecting radially inward from the upper end portion of the wall portion 121, and a radially outward portion from the lower end portion of the wall portion 121. And a projecting lower flange portion 123.

The wall portion 121 extends from the lower side to the upper side, and is disposed on the upper surface of the housing 2 so as to surround the outer peripheral edge portion 104 of the component insertion hole 34 on the upper surface of the housing 2.
The attachment base 102 is fixed to the upper surface of the housing 2 by welding at the outer edge 123 a of the lower flange portion 123 with the lower surface of the lower flange portion 123 being in surface contact with the upper surface of the housing 2.

  The upper flange portion 122 has an upper surface that is a mating surface with the lower surface of the pressing portion 103, and the fixing portion sealing material 108 is interposed between the upper surface of the upper flange portion 122 and the lower surface of the pressing portion 103. Has been.

  A screw hole 141 is formed in the upper flange portion 122 at a position corresponding to each through hole 103 a of the pressing portion 103. The upper surface of the screw hole 141 is open, while the lower surface is closed. Thereby, it can prevent that the front-end | tip part of the screw | thread 106 is exposed outside the upper flange part 122. FIG.

  In the present embodiment, the screw 106 is screwed into the screw hole 141 of the upper flange portion 122 of the mounting base 102 from the upper side of the pressing portion 103 through the through hole 103a of the pressing portion 103, whereby the pressing portion 103 is attached to the mounting base. Screw to 102.

  In this embodiment, the sealing performance between the upper surface of the flange portion 33 b of the insulator 33 and the lower surface of the pressing portion 103 of the fixing portion 101 is ensured by the flange seal material 105. Further, the sealing performance between the upper surface of the upper flange portion 122 of the attachment base portion 102 and the lower surface of the pressing portion 103 is ensured by the fixing portion sealing material 108. Moreover, the sealing property between the lower surface of the lower flange part 123 and the upper surface of the housing | casing 2 is ensured by welding. Therefore, even if the exhaust gas in the housing 2 passes through the gap between the insulator 33 and the housing 2 and reaches the space 107, the leakage of the exhaust gas from the space 107 causes the lower flange portion 123 and the housing to leak. 2 is suppressed by the welding and fixing, the heel seal material 105, and the fixed seal material 108.

  In particular, according to the present embodiment, the mounting base portion 102 has a cylindrical wall portion 121 extending from the lower side (one side) to the upper side (the other side), and the wall portion 121 from the upper side of the wall portion 121. And an upper flange portion (first flange portion) 122 projecting inward, and the pressing portion 103 is fixed to the upper flange portion 122. Thereby, compared with the above-mentioned 2nd Embodiment, since the attachment base 102 can be comprised with a thin member, the weight reduction of the attachment base 102 is realizable.

  In the present embodiment, the mounting base portion 102 includes the lower flange portion 123, but the lower flange portion 123 can be omitted. In this case, the lower end of the wall 121 of the attachment base 102 is hermetically welded to the upper surface of the housing 2.

  FIG. 9 shows a through structure of a housing in the eighth embodiment of the present invention.

Differences from the seventh embodiment shown in FIG. 8 will be described.
In the present embodiment, the upper flange portion 122 projects radially outward from the upper end portion of the wall portion 121, while the lower flange portion 123 projects radially inward from the lower end portion of the wall portion 121.

The attachment base portion 102 is welded and fixed to the upper surface of the housing 2 at the inner edge portion 123b of the lower flange portion 123 with the lower surface of the lower flange portion 123 in surface contact with the upper surface of the housing 2.
A screw hole 124 is formed through the upper flange portion 122 at a position corresponding to each through hole 103 a of the pressing portion 103.

  In the present embodiment, the screw 106 is screwed into the screw hole 124 of the upper flange portion 122 of the mounting base 102 from the upper side of the pressing portion 103 through the through hole 103a of the pressing portion 103, whereby the pressing portion 103 is attached to the mounting base. Screw to 102.

  In the present embodiment, the distance between the upper surface of the upper flange portion 122 of the mounting base 102 and the upper surface of the housing 2 is the distance between the upper surface of the flange portion 33b of the insulator 33 and the upper surface of the housing 2. equal. In other words, the height of the upper flange portion 122 of the attachment base portion 102 is equal to the height of the flange portion 33b of the insulator body 33 with the upper surface of the housing 2 as the reference surface. Therefore, the thickness of the fixing portion sealing material 108 and the thickness of the flange portion sealing material 105 can be made equal. Therefore, the sheet-shaped sealing material having the same thickness can be used for the fixed portion sealing material 108 and the buttock sealing material 105.

  In the present embodiment, the flange seal material 105 and the fixed seal material 108 are integrally formed of the seal material 110. That is, the sealing material 110 is configured to include a portion that functions as the flange sealing material 105 and a portion that functions as the fixed portion sealing material 108.

  Moreover, in this embodiment, the part which comprises the collar part sealing material 105 among the sealing materials 110 contacts the main-body part 33a of the insulator 33, and covers the upper surface of the flange 33b of the insulator 33 entirely. Yes.

  In particular, according to the present embodiment, the attachment base portion 102 includes the lower flange portion 123 that projects from the lower side of the wall portion 121 to the inside of the wall portion 121. The lower flange portion 123 is welded and fixed to the upper surface of the housing 2 at the inner edge portion 123b. Thereby, compared with the above-mentioned 7th Embodiment, the welding line which weld-fixes the lower flange part 123 and the housing | casing 2 can be shortened.

  Moreover, according to this embodiment, since the collar part sealing material 105 and the fixing | fixed part sealing material 108 are integrally formed, the number of parts can be reduced.

  In the present embodiment, the flange seal material 105 and the fixed seal material 108 may be separate. Further, even if the distance between the upper surface of the upper flange portion 122 of the mounting base portion 102 and the upper surface of the housing 2 is different from the distance between the upper surface of the flange portion 33 b of the insulator 33 and the upper surface of the housing 2. Good.

  In the present embodiment, the mounting base portion 102 includes the lower flange portion 123, but the lower flange portion 123 can be omitted. In this case, the lower end of the wall 121 of the attachment base 102 is hermetically welded to the upper surface of the housing 2.

  FIG. 10 shows a through structure of a housing in the ninth embodiment of the present invention.

Differences from the eighth embodiment shown in FIG. 9 will be described.
In this embodiment, the heel seal material 105 and the fixed seal material 108 are separate bodies.
The lower flange portion 123 is connected to a first projecting portion 131 projecting radially inward from the lower end portion of the wall portion 121, and an inner edge portion 131 a of the first projecting portion 131. A cylindrical portion 132 extending toward the top and a second projecting portion 133 projecting radially inward from the upper end of the cylindrical portion 132 are configured.

The attachment base portion 102 is welded to the upper surface of the housing 2 at the outer edge portion 131b of the first overhanging portion 131 with the lower surface of the first overhanging portion 131 of the lower flange portion 123 being in surface contact with the upper surface of the housing 2. It is fixed.
The lower surface of the flange portion 33 b of the insulator body 33 is in surface contact with the upper surface of the second overhang portion 133 of the lower flange portion 123.

  Here, the lower flange portion 123 including the first overhang portion 131, the cylindrical portion 132, and the second overhang portion 133 corresponds to the “second flange portion” of the present invention, and Of these, a portion between the upper flange portion (first flange portion) 122 and the housing 2 protrudes inward of the wall portion 121.

  A space 134 is defined below the flange seal material 105 by the cylindrical portion 132 and the second overhang portion 133 of the lower flange portion 123 and the housing 2 (outer peripheral edge portion 104).

  When the pressing portion 103 is screwed to the mounting base 102 by screwing the screw 106 into the screw hole 124 of the upper flange portion 122 of the mounting base 102 from the upper side of the pressing portion 103 through the through hole 103a of the pressing portion 103. By this screwing tightening force, the pressing portion 103 presses the flange seal material 105 and the flange portion 33b of the insulator body 33 from the upper side to the lower side and presses them against the second projecting portion 133 of the lower flange portion 123. . In other words, the flange seal material 105 and the flange 33 b of the insulator 33 are sandwiched between the pressing portion 103 and the second overhanging portion 133 of the lower flange portion 123.

  In particular, according to the present embodiment, the mounting base 102 includes the second flange that protrudes inward from the portion of the wall 121 between the upper flange (first flange) 122 and the housing 2. Portion (the lower flange portion 123 including the first overhang portion 131, the cylindrical portion 132, and the second overhang portion 133), and the flange portion 33b of the insulator body 33 includes the pressing portion 103 and the second portion. It is clamped by the overhang part 133. Further, a space 134 is defined between the second projecting portion 133 and the housing 2. That is, the second overhang portion 133 has a gap between the housing 2. Thereby, since the collar part 33b of the insulator body 33 can be arrange | positioned away from the housing | casing 2, the direct heat transfer from the housing | casing 2 to the collar part 33b of the insulator body 33 can be suppressed, and by extension. The temperature condition of the flange seal material 105 on the flange 33b of the insulator 33 can be relaxed.

  FIG. 11 shows a through-hole structure of a housing in the tenth embodiment of the present invention.

Differences from the sixth embodiment shown in FIG. 7 will be described.
A convex portion 103b that protrudes upward is formed in the central portion of the pressing portion 103, and the flange portion 33b of the insulator body 33 is located in the convex portion 103b.

  In the present embodiment, the distance between the upper surface of the upper flange portion 122 of the attachment base 102 and the upper surface of the housing 2 is such that the upper surface of the second overhang portion 133 of the lower flange portion 123 of the attachment base 102 and the upper surface of the housing 2. Is equal to the distance between In other words, the height of the upper flange portion 122 of the attachment base portion 102 is equal to the height of the second overhang portion 133 of the lower flange portion 123 of the attachment base portion 102 with the upper surface of the housing 2 as the reference surface.

  Moreover, in this embodiment, the upper surface of the cylindrical part 132 of the attachment base 102 and the lower surface of the convex part 103b of the pressing part 103 are in surface contact.

  In the present embodiment, the space 107 defined by the fixed portion 101 and the housing 2 (outer peripheral edge portion 104) is divided into three spaces (a first space 107a, a second space 107b, and a third space 107c). Yes. In other words, the space 107 includes a first space 107a, a second space 107b, and a third space 107c.

The first space 107 a is partitioned and formed by the convex portion 103 b of the pressing portion 103, the second projecting portion 133 of the lower flange portion 123 of the attachment base portion 102, and the flange seal material 105, and the flange portion 33 b of the insulator body 33. To accommodate.
The second space 107b is partitioned by the cylindrical portion 132 and the second overhang portion 133 of the lower flange portion 123 of the attachment base portion 102, and the housing 2 (outer peripheral edge portion 104).
The third space 107 c is defined by the wall portion 121 of the mounting base portion 102, the first overhang portion 131 of the lower flange portion 123, the cylindrical portion 132, and the pressing portion 103.

  In this embodiment, the sealing performance between the lower surface of the flange portion 33 b of the insulator 33 and the upper surface of the second overhang portion 133 of the lower flange portion 123 is ensured by the flange seal material 105. Moreover, the sealing property between the lower surface of the 1st overhang | projection part 131 of the lower flange part 123 and the upper surface of the housing | casing 2 is ensured by welding. Therefore, even if the exhaust gas in the housing 2 passes through the gap between the housing 2 and the insulator 33 and reaches the second space 107b, the leakage of the exhaust gas from the second space 107b is caused by the lower flange. It is suppressed by the welding and fixing between the first overhanging portion 131 of the portion 123 and the housing 2 and the flange seal material 105.

  FIG. 12 shows a through-hole structure of a housing in the eleventh embodiment of the present invention.

Differences from the eighth embodiment shown in FIG. 9 will be described.
An annular recess 33 c is formed on the lower surface of the flange portion 33 b of the insulator body 33 so as to surround the periphery of the main body portion 33 a of the insulator body 33. Thus, by forming the recessed part 33c, the weight reduction of the insulator body 33 is realizable.

  On the upper surface of the flange portion 33b of the insulator body 33, a convex portion 33d protruding upward is formed. The cylindrical portion 33d is formed in an annular shape so as to surround the periphery of the main body portion 33a of the insulator body 33a. The upper surface of the flange portion 33b including the convex portion 33d is in contact with the lower surface of the portion that functions as the flange seal material 105 in the seal material 110.

  A bead 103c is formed on the inner side of the pressing portion 103 in the radial direction from the through hole 103a so as to protrude downward from the lower surface. The bead 103c is formed in an annular shape so as to surround the periphery of the main body portion 33a of the insulator body 33a. The lower surface of the pressing portion 103 including the bead 103 c is in contact with the upper surface of the portion that functions as the fixed portion sealing material 108 in the sealing material 110.

In the first to tenth embodiments described above, the surface of the flange portion 33b of the insulator body 33 may not be a smooth surface. That is, for example, the convex portion 33d as described above may be formed.
In the first to tenth embodiments described above, the surface of the pressing portion 103 may not be a smooth surface. That is, for example, the bead 103c as described above may be formed.

  Moreover, the structure of the penetration part 35 of the housing | casing 2 in the above-mentioned 2nd-11th embodiment is the penetration part 14,18,22,27,31 of the housing | casing 2 similarly to the above-mentioned 1st Embodiment, and It is applicable to each of 39 structures.

  In the first to eleventh embodiments described above, the fuel cell device 1 is taken as an example to describe the through structure of the casing according to the present invention. However, the application target of the through structure according to the present invention is a fuel cell. Not limited to devices.

  FIG. 13 shows a schematic configuration of a water heater to which the penetration structure according to the present invention can be applied.

Differences from the fuel cell device 1 shown in FIG. 1 will be described.
The water heater 200 is configured by disposing the combustion unit 4 and the heat exchange unit 201 in the housing 2. In other words, the housing 2 includes the combustion unit 4 and the heat exchange unit 201.
The housing 2 is provided with an intake port 41 ′ and an exhaust port 42 ′ in advance.

Air outside the housing 2 is supplied to the combustion unit 4 in the housing 2 through the air inlet 41 ′.
The exhaust gas generated in the combustion unit 4 is discharged out of the housing 2 through the heat exchange unit 201 and the exhaust port 42 ′.

The water heater 200 is provided with a fuel supply passage 202 that supplies fuel (hydrocarbon fuel or the like) from the outside of the housing 2 to the combustion unit 4.
The fuel supply passage 202 includes a metal pipe 203. The pipe 203 is inserted into a component insertion hole 204 that is formed through the housing 2 in advance and penetrates the housing 2. In the penetration part 205 of the casing 2 through which the pipe 203 penetrates, a penetration part structure similar to the penetration part 14 of FIG. 1 can be applied in order to ensure sealing performance without welding the pipe 203 to the casing 2.

  The water heater 200 includes an ignition heater 32 for the combustion unit 4. About the penetration part 35 of the housing | casing 2 which this ignition heater 32 penetrates, it is the same as that of FIG.

  The combustion unit 4 burns fuel from the fuel supply passage 202 in the presence of air flowing in from the intake port 41 ′.

The water heater 200 is provided with a heat recovery water supply passage 206 that supplies water for heat recovery (heat recovery water) from the outside of the housing 2 to the heat exchange unit 201.
The heat recovery water supply passage 206 includes a metal pipe 207. The pipe 207 is inserted into a component insertion hole 208 that is formed through the housing 2 in advance and penetrates the housing 2. In the penetrating portion 209 of the housing 2 through which the pipe 207 penetrates, the same penetrating portion structure as the penetrating portion 18 of FIG. 1 can be applied in order to ensure sealing performance without welding the pipe 207 to the housing 2.

  In the heat exchanging unit 201, the combustion heat generated in the combustion unit 4 is recovered with heat recovery water to obtain hot water.

The water heater 200 is provided with a heat recovery water discharge passage 210 that discharges the heat recovery water (warm water) heated by the heat exchange unit 201 from the heat exchange unit 201 to the outside of the housing 2.
The heat recovery water discharge passage 210 is configured to include a metal pipe 211. The pipe 211 passes through the housing 2 by being inserted into a component insertion hole 212 that is formed through the housing 2 in advance. In the penetration part 213 of the housing 2 through which the pipe 211 penetrates, a penetration part structure similar to the penetration part 18 of FIG. 1 can be applied in order to ensure sealing performance without welding the pipe 211 to the casing 2.

  FIG. 14 shows a schematic configuration of a second example of the fuel cell device.

Differences from the first example of the fuel cell device shown in FIG. 1 will be described.
A box-shaped case 60 that is an insertion member is disposed inside the housing 2, and the reforming unit 3, the combustion unit 4, and the power generation unit 5 are disposed in the case 60. . In other words, the reforming unit 3, the combustion unit 4, and the power generation unit 5 are disposed in the internal space 60 a of the case 60.
Case 60 is made of metal.

The case 60 is provided with an intake port 61 for introducing an oxidant (for example, air) into the case 60 and an exhaust port 62 for discharging the exhaust gas generated in the combustion unit 4 to the outside.
A space 63 is formed around the entire circumference between the inner surface of the housing 2 and the outer surface of the case 60.

One end of the outer tube 64b of the double tube 64 composed of the inner tube 64a and the outer tube 64b is connected to the intake port 41 of the housing 2.
One end of the inner pipe 64 a of the double pipe 64 is connected to the exhaust port 62 of the case 60.

A space 64 c between the inner tube 64 a and the outer tube 64 b is connected to the space 63 through the air inlet 41 of the housing 2.
The space 63 is connected to the internal space 60 a of the case 60 through the air inlet 61 of the case 60.
The internal space 60 a of the case 60 is connected to the space 64 d in the inner pipe 64 a through the exhaust port 62 of the case 60.

  Accordingly, the oxidizing agent (for example, air) from the outside is a space 64c between the inner tube 64a and the outer tube 64b of the double tube 64, the air inlet 41, the space 63 of the housing 2, the air inlet 61 of the case 60, Then, the air is supplied to the air electrode of each cell of the fuel cell 50 through a cathode air supply passage (not shown).

  Further, the exhaust gas generated in the combustion unit 4 is discharged out of the housing 2 from the exhaust port 62 of the case 60 through the space 64 d in the inner pipe 64 a of the double pipe 64.

  The pipe 12 that constitutes the raw fuel supply passage 11 is further inserted into a component insertion hole 13 ′ that is formed through the case 60 in advance and penetrates the case 60. That is, in the penetration part 14 of the housing 2, the pipe 12 penetrates the housing 2 through the component insertion hole 13, and further penetrates the case 60 through the component insertion hole 13 '.

  The piping 16 constituting the reforming water supply passage 15 is further inserted into a component insertion hole 17 ′ that is formed through the case 60 in advance and penetrates the case 60. That is, in the penetrating portion 18 of the housing 2, the pipe 16 penetrates the housing 2 via the component insertion hole 17 and further penetrates the case 60 via the component insertion hole 17 ′.

  The protective tube 20 constituting the reforming unit temperature measuring unit 19 is further inserted into a component insertion hole 21 ′ that is formed through the case 60 in advance and penetrates the case 60. That is, in the penetration part 22 of the housing 2, the protective tube 20 penetrates the housing 2 via the component insertion hole 21 and further penetrates the case 60 via the component insertion hole 21 '.

  The current extraction member 24 including the insulator body 25 is further inserted into a component insertion hole 26 ′ that is formed through the case 60 in advance so as to penetrate the case 60. That is, in the through portion 27 of the housing 2, the current extraction member 24 penetrates the housing 2 through the component insertion hole 26, and further penetrates the case 60 through the component insertion hole 26 '.

  The protective tube 29 constituting the power generation unit temperature measuring unit 28 is further inserted into a component insertion hole 30 ′ that is formed in the case 60 in advance so as to penetrate the case 60. That is, in the penetration part 31 of the housing 2, the protective tube 29 penetrates the housing 2 via the component insertion hole 30 and further penetrates the case 60 via the component insertion hole 30 '.

  The ignition heater 32 including the insulator 33 is further inserted into a component insertion hole 34 ′ that is formed through the case 60 in advance to penetrate the case 60. That is, in the penetration part 35 of the housing 2, the ignition heater 32 penetrates the housing 2 via the component insertion hole 34 and further penetrates the case 60 via the component insertion hole 34 '.

  The protective tube 37 constituting the combustion part temperature measuring part 36 is inserted into a part insertion hole 38 ′ that is formed through the case 60 in advance and penetrates the case 60. That is, in the penetration part 39 of the housing 2, the protective tube 37 penetrates the housing 2 through the component insertion hole 38 and further penetrates the case 60 through the component insertion hole 38 ′.

FIG. 15 shows a through-hole structure of a housing in the twelfth embodiment of the present invention.
Here, the penetration part 35 of the casing 2 when the structure of the penetration part 35 of the casing 2 in the eighth embodiment shown in FIG. 9 is applied to the second example of the fuel cell device shown in FIG. The structure of will be described.

Differences from the eighth embodiment shown in FIG. 9 will be described.
The case 60 is provided with a mounting projection 66 at a position corresponding to the component insertion hole 34 of the housing 2.

The mounting convex portion 66 is disposed between the cylindrical wall portion 67 extending above the upper surface (outer surface) of the case 60 and the lower surface (inner surface) of the housing 2 so as to close the upper opening of the wall portion 67. And a plate-like lid portion 68 that forms a mating surface. A part insertion hole 34 ′ is formed through the lid 68.
The component insertion hole 34 ′ of the case 60 is continuous with the component insertion hole 34 of the housing 2.
In the case 60, the lid portion 68 of the mounting projection 66 is fixed to the housing 2 by welding.

  In the present embodiment, the sealing property between the lower surface of the housing 2 and the upper surface of the lid portion 68 of the mounting projection 66 of the case 60 is ensured by welding. Therefore, it is possible to suppress the exhaust gas in the case 60 from leaking into the space 63 through the gap between the case 60 and the housing 2.

  In the present embodiment, the sealing function between the upper surface of the flange portion 33b of the insulator 33 and the lower surface of the pressing portion 103 of the fixed portion 101 is ensured by the portion of the seal material 110 that functions as the flange seal material 105. The Further, the sealing function between the upper surface of the upper flange portion 122 of the attachment base portion 102 and the lower surface of the pressing portion 103 is ensured by the portion of the sealing material 110 that functions as the fixed portion sealing material 108. Moreover, the sealing property between the lower surface of the lower flange part 123 and the upper surface of the housing | casing 2 is ensured by welding. Therefore, even if the exhaust gas in the case 60 reaches the space 107 through the gaps between the case 60 and the casing 2 and the insulator 33, the exhaust gas leaks from the space 107 to the lower flange portion. It is restrained by the welding and fixing of 123 and the housing 2 and the sealing material 110.

  Note that the structure of each of the through portions 14, 18, 22, 27, 31, and 39 of the housing 2 shown in FIG. The component insertion hole can be formed through, and the mounting projection 66 can be fixed to the housing 2 by welding.

  In the present embodiment, the mounting base portion 102 includes the lower flange portion 123, but the lower flange portion 123 can be omitted. In this case, the lower end of the wall 121 of the attachment base 102 is hermetically welded to the upper surface of the housing 2.

  As described above, in this embodiment, the through-hole structure of the housing when the through-hole structure of the housing in the above-described eighth embodiment is applied to the above-described second example of the fuel cell device has been described. However, the through-hole structure of the housing applied to the second example of the fuel cell device is not limited to this, and the mounting projection 66 is formed in the case 60 to penetrate the component insertion hole as in the present embodiment. By attaching the mounting protrusion 66 to the housing 2 by welding, each of the through-hole structures of the first to seventh and ninth to eleventh embodiments is applied to the second example of the fuel cell device. it can.

FIG. 16 shows a through-hole structure of a housing in the thirteenth embodiment of the present invention.
Here, the modification of the structure of the penetration part 35 of the housing 2 in the second embodiment shown in FIG. 3 is applied to the second example of the fuel cell device shown in FIG. The structure of the penetration part 35 will be described.

Differences from the second embodiment shown in FIG. 3 will be described.
In the present embodiment, the distance between the upper surface of the attachment base 102 and the upper surface of the housing 2 is equal to the distance between the upper surface of the flange 33 b of the insulator 33 and the upper surface of the housing 2. In other words, the height of the mounting base 102 is equal to the height of the flange 33b of the insulator 33 with the upper surface of the housing 2 as the reference plane. Therefore, the thickness of the fixing portion sealing material 108 and the thickness of the flange portion sealing material 105 can be made equal.

The space 107 is partitioned by the fixing portion 101 and the housing 2 (outer peripheral edge portion 104) so that the screws 150, which are fastening members, can be attached to the housing 2.
A plurality of communication holes 151 for communicating the inside and the space 107 are formed in the housing 2 in advance.

The case 60 is provided with a mounting projection 66 at a position corresponding to the component insertion hole 34 of the housing 2.
The mounting convex portion 66 is disposed between the cylindrical wall portion 67 extending above the upper surface (outer surface) of the case 60 and the lower surface (inner surface) of the housing 2 so as to close the upper opening of the wall portion 67. And a plate-like lid portion 68 that forms a mating surface. A part insertion hole 34 ′ is formed through the lid 68.

A plate-shaped sealing material 152 is interposed between the lower surface of the housing 2 and the upper surface of the lid portion 68 of the case 60. The sealing material 152 is made of, for example, resin or expanded graphite. A part insertion hole 153 is formed in advance in the center of the seal material 152. In addition, a through hole 154 is formed in the sealing material 152 in advance at a position corresponding to the communication hole 151 of the housing 2.
A screw hole 155 is previously formed in the lid portion 68 of the case 60 at a position corresponding to the through hole 154 of the sealing material 152.
The component insertion hole 34 ′ of the case 60, the component insertion hole 153 of the sealing material 152, and the component insertion hole 34 of the housing 2 are continuous in series.

  By screwing the screw 150 into the screw hole 155 of the case 60 from the space 107 of the housing 2 through the communication hole 151 of the housing 2 and the through hole 154 of the sealing material 152, the case 60 is Fastened and fixed to the housing 2. At this time, the screw 150 is inserted into the communication hole 151 and penetrates the housing 2.

  In this embodiment, the sealing property between the lower surface of the housing 2 and the upper surface of the lid portion 68 of the mounting convex portion 66 of the case 60 is ensured by the sealing material 152. Therefore, it is possible to suppress the exhaust gas in the case 60 from leaking into the space 63 through the gap between the case 60 and the housing 2.

  Further, in this embodiment, the sealing performance between the upper surface of the flange portion 33 b of the insulator 33 and the lower surface of the pressing portion 103 of the fixing portion 101 is ensured by the flange seal material 105. Further, the sealing performance between the upper surface of the attachment base 102 and the lower surface of the pressing portion 103 is ensured by the fixing portion seal material 108. Moreover, the sealing performance between the lower surface of the attachment base 102 and the upper surface of the housing 2 is ensured by welding. Therefore, even if the exhaust gas in the case 60 reaches the space 107 through the gap between the case 60 and the casing 2 and the insulator 33, the leakage of the exhaust gas from the space 107 causes the mounting base 102 to leak. And the housing 2 are fixed by welding, the heel seal material 105, and the fixed seal material 108.

  In the present embodiment, even if the exhaust gas in the case 60 reaches the space 107 through the gaps between the screw 150 and the case 60, the sealing material 152, and the housing 2, Exhaust gas leakage is suppressed by welding and fixing the mounting base 102 and the housing 2, the flange seal material 105, and the fixed seal material 108.

  Note that the structure of each of the through portions 14, 18, 22, 27, 31, and 39 of the housing 2 shown in FIG. The component insertion hole can be formed through, and the mounting convex portion 66 can be fastened and fixed to the housing 2.

  In particular, according to the present embodiment, the housing 2 is formed with a communication hole 151 that communicates the inside with the space 107 in advance, and is inserted into the communication hole 151 to pass through the screw 150 (fastening). The housing 2 and the case 60 (insertion member) disposed therein are fastened and fixed to each other by the member. Even if the exhaust gas in the case 60 reaches the space 107 through the gap between the screw 150 and the case 60 and the housing 2 in this fastening and fixed state, the leak of the exhaust gas from the space 107 Since it is suppressed by the welding and fixing of the attachment base 102 and the housing 2, the flange seal material 105, and the fixed portion seal material 108, the leakage of exhaust gas caused by the attachment of the case 60 to the housing 2 is suppressed. be able to.

  In addition, about the structure of the penetration part 35 of the housing | casing 2 in this embodiment, it is possible to apply the modification of the structure of the penetration part 35 of the housing | casing 2 in 7th Embodiment shown in FIG. . In this case, with respect to the space 107 shown in FIG. 8, the fixing portion 101 and the housing 2 (outer peripheral edge portion 104) are configured so that the screw 150 as a fastening member can be attached to the housing 2. It can be compartmented. Further, the distance between the upper surface of the mounting base 102 and the upper surface of the housing 2 may be configured to be equal to the distance between the upper surface of the flange portion 33 b of the insulator 33 and the upper surface of the housing 2.

FIG. 17 shows a through-hole structure of a housing in the fourteenth embodiment of the present invention.
In the present embodiment, a modified example of the structure of the penetrating portion 35 of the housing 2 in the eighth embodiment shown in FIG. 9 is used as the structure of the penetrating portion 35 of the housing 2 in the thirteenth embodiment shown in FIG. Has been applied.

The space 107 in the present embodiment is partitioned by the fixing portion 101 and the housing 2 (outer peripheral edge portion 104) so that the screws 150 as fastening members can be attached to the housing 2. Yes.
In the present embodiment, the heel seal material 105 and the fixed seal material 108 are separate.

  In the present embodiment, the mounting base portion 102 includes the lower flange portion 123, but the lower flange portion 123 can be omitted. In this case, the lower end of the wall 121 of the attachment base 102 is hermetically welded to the upper surface of the housing 2.

FIG. 18 shows a through-hole structure of a housing in the fifteenth embodiment of the present invention.
Here, the penetration part 35 of the casing 2 when the structure of the penetration part 35 of the casing 2 in the ninth embodiment shown in FIG. 10 is applied to the second example of the fuel cell device shown in FIG. The structure of will be described.

Differences from the ninth embodiment shown in FIG. 10 will be described.
A plurality of communication holes 151 ′ are penetratingly formed in the first projecting portion 131 of the housing 2 and the lower flange portion 123 so as to communicate the interior of the housing 2 and the space 107.

The case 60 is provided with a mounting projection 66 at a position corresponding to the component insertion hole 34 of the housing 2.
The mounting convex portion 66 is disposed between the cylindrical wall portion 67 extending above the upper surface (outer surface) of the case 60 and the lower surface (inner surface) of the housing 2 so as to close the upper opening of the wall portion 67. And a plate-like lid portion 68 that forms a mating surface. A part insertion hole 34 ′ is formed through the lid 68.

A plate-shaped sealing material 152 is interposed between the lower surface of the housing 2 and the upper surface of the lid portion 68 of the case 60. The sealing material 152 is made of, for example, resin or expanded graphite. A part insertion hole 153 is formed in advance in the center of the seal material 152. In addition, a through hole 154 is formed in advance in the sealing material 152 at a position corresponding to the communication hole 151 ′ of the first projecting portion 131 of the housing 2 and the lower flange portion 123.
A screw hole 155 is previously formed in the lid portion 68 of the case 60 at a position corresponding to the through hole 154 of the sealing material 152.
The component insertion hole 34 ′ of the case 60, the component insertion hole 153 of the sealing material 152, and the component insertion hole 34 of the housing 2 are continuous in series.

  The screw 150 is inserted into the screw hole of the case 60 from the space 107 of the housing 2 through the communication hole 151 ′ of the first overhanging portion 131 of the housing 2 and the lower flange portion 123 and the through hole 154 of the sealing material 152. The case 60 is fastened and fixed to the housing 2 by being screwed to 155.

  In this embodiment, the sealing property between the lower surface of the housing 2 and the upper surface of the lid portion 68 of the mounting convex portion 66 of the case 60 is ensured by the sealing material 152. Therefore, it is possible to suppress the exhaust gas in the case 60 from leaking into the space 63 through the gap between the case 60 and the housing 2.

  Further, in this embodiment, the sealing performance between the upper surface of the flange portion 33 b of the insulator 33 and the lower surface of the pressing portion 103 of the fixing portion 101 is ensured by the flange seal material 105. Further, the sealing performance between the upper surface of the upper flange portion 122 of the attachment base portion 102 and the lower surface of the pressing portion 103 is ensured by the fixing portion sealing material 108. Moreover, the sealing property between the lower surface of the 1st overhang | projection part 131 of the lower flange part 123 and the upper surface of the housing | casing 2 is ensured by welding. Therefore, even if the exhaust gas in the case 60 reaches the space 107 through the gaps between the case 60 and the casing 2 and the insulator 33, the exhaust gas leaks from the space 107 to the lower flange portion. The first overhang portion 131 and the housing 2 are fixed by welding, the flange seal material 105, and the fixed portion seal material 108.

  Further, in the present embodiment, the exhaust gas in the case 60 passes through the gap between the screw 150 and the case 60, the sealing material 152, the housing 2, and the first overhanging portion 131 of the lower flange portion 123. Even if the exhaust gas leaks from the inside of the space 107, the leakage of the exhaust gas from the space 107 is fixed by welding the first projecting portion 131 of the lower flange portion 123 and the housing 2, the flange seal material 105, and the fixed portion seal material 108. Is suppressed by.

  Note that the structure of each of the through portions 14, 18, 22, 27, 31, and 39 of the housing 2 shown in FIG. The component insertion hole can be formed through, and the mounting convex portion 66 can be fastened and fixed to the housing 2.

  In particular, according to the present embodiment, the lower flange portion 123 of the attachment base portion 102, the casing 2, the sealing material 152, and the case 60 can be fastened and fixed at once by the screw 150. The number of parts can be reduced.

FIG. 19 shows a through-hole structure of a housing in the sixteenth embodiment of the present invention.
In the present embodiment, a modified example of the structure of the penetrating portion 35 of the housing 2 in the tenth embodiment shown in FIG. 11 is the same as the structure of the penetrating portion 35 of the housing 2 in the fifteenth embodiment shown in FIG. Has been applied.

In the present embodiment, the distance between the lower surface near the through hole 103a of the pressing portion 103 and the upper surface of the housing 2, the distance between the lower surface of the convex portion 103b of the pressing portion 103 and the upper surface of the housing 2, and The distance between the lower surface of the flange portion 33b of the insulator 33 and the upper surface of the housing 2 is equal to each other.
Further, a fixing portion sealing material 108 is interposed between the lower surface of the holding portion 103 in the vicinity of the through hole 103a and the upper surface of the upper flange portion 122 of the mounting base 102. The part sealing material 105 is integrally formed with the sealing material 110. That is, the sealing material 110 is configured to include a portion that functions as the flange sealing material 105 and a portion that functions as the fixed portion sealing material 108.

  In the present embodiment, the first space 107 a is partitioned and formed by the convex portion 103 b of the pressing portion 103 and the portion of the sealing material 110 that functions as the flange sealing material 105, and accommodates the flange portion 33 b of the insulator 33. To do. The third space 107 c is partitioned by the wall portion 121 of the mounting base portion 102, the first overhang portion 131 of the lower flange portion 123, the cylindrical portion 132, and the sealing material 110.

In the present embodiment, a plurality of communication holes 151 ′ are formed in advance through the first projecting portion 131 of the housing 2 and the lower flange portion 123 so as to communicate the inside of the housing 2 and the third space 107 c. ing.
As for the third space 107 c, both the part that functions as the collar sealant 105 and the part that functions as the fixed part sealant 108 of the sealant 110 are sandwiched between the mounting base 102 and the pressing part 103. As a result, sealing performance is ensured.

  In the present embodiment, the screw 150 is passed from the third space 107 c of the housing 2 through the communication hole 151 ′ of the first overhanging portion 131 of the housing 2 and the lower flange portion 123 and the through hole 154 of the sealing material 152. Then, the case 60 is fastened and fixed to the housing 2 by being screwed into the screw hole 155 of the case 60.

  In the present embodiment, the exhaust gas in the case 60 passes through a gap between the screw 150 and the case 60, the sealing material 152, the housing 2, and the first overhanging portion 131 of the lower flange portion 123, so that the third Even when the space 107c is reached, the leakage of exhaust gas from the third space 107c is suppressed by the sealing material 110.

  Here, the sealing material 110 may have a separate structure composed of the flange sealing material 105 and the fixed portion sealing material 108. In this case, the sealing performance of the third space 107c is ensured by sandwiching both the flange seal material 105 and the fixed seal material 108 between the attachment base 102 and the pressing portion 103.

  Note that the structure of each of the through portions 14, 18, 22, 27, 31, and 39 of the housing 2 shown in FIG. The component insertion hole can be formed through, and the mounting convex portion 66 can be fastened and fixed to the housing 2.

  FIG. 20 shows a schematic configuration of a third example of the fuel cell device.

Differences from the first example of the fuel cell device shown in FIG. 1 will be described.
Inside the housing 2, an exhaust gas processing unit 80 that purifies high-temperature exhaust gas generated in the combustion unit 4 and guides it to the exhaust port 42 is disposed.

The exhaust gas treatment unit 80 includes a box-shaped metal case 81 that is an insertion member, and an exhaust gas purification catalyst (for example, a combustion catalyst) 82 that is filled in the case 81.
In the exhaust gas treatment unit 80, components such as carbon monoxide and hydrogen contained in the exhaust gas are purified by the exhaust gas purification catalyst 82.

The fuel cell device 1 includes an electric heater 83 for heating the catalyst of the exhaust gas treatment unit 80.
The outer portion of the electric heater 83 is covered with the insulator 84. The electric heater 83 is inserted into a component insertion hole 85 that is formed through the housing 2 in advance and a component insertion hole 85 ′ that is formed through the case 81 in advance, and passes through the housing 2 and the case 81. With respect to the through portion 86 of the housing 2 through which the electric heater 83 passes, the insulator 84 and the housing 2 are secured while the insulator 84 ensures insulation between the electric heater 83 and the housing 2 and the case 81. In order to ensure the sealing property between the two, it is possible to adopt the through-hole structure of the housing according to the present invention applied to the second example of the fuel cell device shown in FIG. In this case, the case 81 is fixed to the housing 2 similarly to the case 60. The electric heater 83 inserted into the insulator 84 corresponds to the “electric part” of the present invention. Further, the insulator 84 may be provided with a flange (not shown), and the insulator 84 and the electric heater 83 may constitute the “penetrating component” of the present invention.

The fuel cell device 1 includes an exhaust gas processing unit temperature measuring unit 87 that measures the temperature of the exhaust gas processing unit 80.
The exhaust gas treatment unit temperature measurement unit 87 includes a metal protective tube 88 and a thermocouple (not shown) disposed in the protective tube 88. The protective tube 88 is inserted into a component insertion hole 89 that is formed through the housing 2 in advance and a component insertion hole 89 ′ that is formed through the case 81 in advance, and passes through the housing 2 and the case 81. In the penetrating portion 90 of the housing 2 through which the protective tube 88 penetrates, the second example of the fuel cell device shown in FIG. 14 described above is used to ensure the sealing performance without welding the protective tube 88 to the housing 2. The applied through-hole structure of the housing according to the present invention can be employed. In this case, the case 81 is fixed to the housing 2 similarly to the case 60. The protective tube 88 functioning as the “component main body” of the present invention is provided with a flange (not shown) protruding outward from the outer peripheral surface thereof, so that the flange, the protective tube 88, and the thermocouple (see FIG. The “penetrating component” of the present invention may be configured by the following.

  In the fuel cell device 1 shown in FIGS. 1, 14, and 20 described above, the hydrogen-rich fuel generated in the reforming unit 3 is used as the hydrogen-containing fuel supplied to the fuel electrode of the fuel cell of the fuel cell 50. However, the hydrogen-containing fuel is not limited to this, and, for example, pure hydrogen can be used as the hydrogen-containing fuel. In this case, the reforming unit 3 shown in FIGS. 1, 14, and 20 is omitted, and the fuel cell is configured so that pure hydrogen is directly supplied to the fuel electrode of the fuel cell of the fuel cell 50. The device 1 may be constructed.

  The illustrated embodiments are merely examples of the present invention, and the present invention is not limited to those directly described by the described embodiments, and various improvements and modifications made by those skilled in the art within the scope of the claims. Needless to say, it encompasses changes.

  For example, in the fuel cell device 1 shown in FIGS. 1, 14, and 20 and the water heater 200 shown in FIG. 13, the penetrating component penetrates the housing 2, the reforming unit 3, the combustion Although the form inserted in the unit 4, the power generation unit 5, the exhaust gas treatment unit 80, and the heat exchange unit 201 is illustrated, the penetrating component may be inserted in addition to the above as long as it is included in the housing. .

  Further, in the fuel cell device 1 shown in FIG. 14, the form in which the intake port and the exhaust port have a double pipe structure is illustrated, but the pipe is connected to different places instead of the double pipe structure. Also good.

Further, in the fuel cell device 1 shown in FIGS. 1, 14, and 20, the form in which the raw fuel supply passage 11 and the reformed water supply passage 15 are individually inserted into the reforming unit 3 is illustrated. The fuel supply passage 11, the reforming water supply passage 15, and the above-described oxidant supply passage (not shown) may have a double tube or triple tube structure as necessary. Or you may reduce the number of penetration parts by mixing at least 2 out of raw fuel, reforming water, and an oxidizing agent, and supplying to one piping.
The claims originally filed were as follows.
Claim 1:
A through-hole structure of a housing that includes a combustion portion that burns fuel and has a part insertion hole formed in advance,
A component main body that is inserted into the component insertion hole of the housing from the outside and penetrates the housing; and a penetrating component that includes a flange protruding from the outer peripheral surface of the component main body;
A mounting base that is disposed so as to surround an outer peripheral edge of the component insertion hole on the outer surface of the housing and is fixed on one side to the outer surface of the housing, and a flange that is fixed on the other side of the mounting base A fixing portion configured to include a pressing portion that presses toward the one side from the other side, and forms a space that accommodates the flange portion together with the outer peripheral edge portion, and
A flange seal material interposed between the flange and the fixed portion, or interposed between the flange and the outer peripheral edge;
A through-hole structure for a housing, comprising:
Claim 2:
The through-hole structure of a housing according to claim 1, further comprising a fixing portion sealing material interposed between the attachment base portion and the pressing portion.
Claim 3:
The flange sealing material is interposed between the flange and the fixed portion,
In the case, a communication hole that communicates the inside with the space is formed in advance,
The casing according to claim 2, wherein the casing and the insertion member disposed therein are fastened and fixed to each other by a fastening member that is inserted into the communication hole and penetrates the casing. Body penetration structure.
Claim 4:
The through-hole structure of a housing according to claim 2 or 3, wherein the flange sealing material is interposed between the flange and the pressing portion.
Claim 5:
The through-hole structure of a housing according to any one of claims 2 to 4, wherein the fixing portion sealing material and the flange sealing material are integrally formed.
Claim 6:
The mounting base includes a cylindrical wall portion extending from the one side toward the other side, and a first flange portion projecting outward or inward from the other side of the wall portion. The through-hole structure of a housing according to any one of claims 1 to 5, wherein the pressing portion is fixed to the first flange portion.
Claim 7:
The mounting base portion is configured to further include a second flange portion projecting inward of the wall portion from a portion between the first flange portion and the housing in the wall portion,
The collar portion is sandwiched between the pressing portion and the second flange portion,
The through-hole structure of a housing according to claim 6, wherein the second flange portion has a gap between the housing and the housing.
Claim 8:
The penetrating component includes an insulator body including the flange portion and the cylindrical component main body portion, and an electric component inserted into the component main body portion. The penetration part structure of the housing | casing as described in any one of Claim 7.
Claim 9:
The housing further includes a fuel cell that generates power using a hydrogen-containing fuel and an oxidant,
The through-hole structure of a housing according to any one of claims 1 to 8, wherein in the combustion section, surplus hydrogen-containing fuel in the fuel cell is burned as the fuel.
Claim 10:
The penetration part structure of the housing according to any one of claims 1 to 9, wherein the one side of the attachment base is fixed by welding to an outer surface of the housing.

DESCRIPTION OF SYMBOLS 1 Fuel cell apparatus 2 Housing | casing 3 Reforming part 4 Combustion part 5 Power generation part 11 Raw fuel supply passage 12 Piping 13, 13 'Component insertion hole 14 Penetration part 15 Reformed water supply passage 16 Piping 17, 17' Component insertion hole 18 Through part 19 Reforming part temperature measuring part 20 Protective tube 21, 21 'Component insertion hole 22 Through part 24 Current extraction member (electrical part)
25 insulator 26, 26 'component insertion hole 27 penetration part 28 power generation part temperature measurement part 29 protective tube 30, 30' component insertion hole 31 penetration part 32 ignition heater (electric part)
33 Insulator 33a Main Body (Part Main Body)
33b Hook 33c Concave 33d Convex 34, 34 'Parts insertion hole 35 Through part 36 Combustion part temperature measurement part 37 Protective tube 38, 38' Parts insertion hole 39 Through parts 41, 41 'Intake port 42, 42' Exhaust port 50 Fuel cell 51 Reformed gas supply passage 60 Case (insertion member)
60a Internal space 61 Intake port 62 Exhaust port 63 Space 64 Double pipe 64a Inner pipe 64b Outer pipe 64c, 64d Space 66 Mounting convex part 67 Wall part 68 Lid part 80 Exhaust gas treatment part 81 Case (insertion member)
82 Exhaust gas purification catalyst 83 Electric heater (electric parts)
84 Insulator body 85, 85 ′ Component insertion hole 86 Through portion 87 Exhaust gas treatment unit temperature measurement unit 88 Protective tube 89, 89 ′ Component insertion hole 90 Through portion 101 Fixing portion 102 Mounting base 102a Screw hole 103 Holding portion 103a Through hole 103b Convex Portion 103c Bead 104 Outer peripheral edge 105 Gutter seal member 106 Screw 107 Space 107a First space 107b Second space 107c Third space 108 Fixed portion seal material 110 Seal member 121 Wall portion 122 Upper flange portion 123 Lower flange portion 123a Outer edge Portion 123b inner edge portion 124 screw hole 131 first overhang portion 131a inner edge portion 131b outer edge portion 132 cylindrical portion 133 second overhang portion 134 space 141 screw hole 150 screw (fastening member)
151, 151 ′ Communication hole 152 Sealing material 153 Parts insertion hole 154 Through hole 155 Screw hole 200 Water heater 201 Heat exchange part 202 Fuel supply passage 203 Pipe 204 Part insertion hole 205 Through part 206 Heat recovery water supply path 207 Pipe 208 Part insertion Hole 209 Through portion 210 Heat recovery water discharge passage 211 Pipe 212 Component insertion hole 213 Through portion

Claims (8)

A through-hole structure of a housing that includes a combustion portion that burns fuel and has a part insertion hole formed in advance,
A component main body that is inserted into the component insertion hole of the housing from the outside and penetrates the housing; and a penetrating component that includes a flange protruding from the outer peripheral surface of the component main body;
A mounting base that is disposed so as to surround the outer peripheral edge of the component insertion hole on the outer surface of the housing and is fixed to the outer surface of the housing by welding and fixed to the other side of the mounting base with screws. A fixing portion configured to include a pressing portion that presses the flange portion from the other side toward the one side, and defines a space for accommodating the flange portion together with the outer peripheral edge portion;
A flange portion sealing member that will be interposed between the fixed portion and the flange portion,
A fixing portion sealing material interposed between the mounting base and the pressing portion;
Equipped with a,
In the case, a communication hole that communicates the inside with the space is formed in advance,
A through-hole structure of a housing, wherein the housing and an insertion member disposed therein are fastened and fixed to each other by a fastening member that is inserted into the communication hole and penetrates the housing. The through-hole structure of a housing according to claim 1 , wherein the flange sealing material is interposed between the flange and the pressing portion. The through-hole structure of a housing according to claim 1 or 2 , wherein the fixing part sealing material and the flange sealing material are integrally formed. The mounting base includes a cylindrical wall portion extending from the one side toward the other side, and a first flange portion projecting outward or inward from the other side of the wall portion. The through-hole structure of a housing according to any one of claims 1 to 3 , wherein the pressing portion is screwed and fixed to the first flange portion. The mounting base portion is configured to further include a second flange portion projecting inward of the wall portion from a portion between the first flange portion and the housing in the wall portion,
The collar portion is sandwiched between the pressing portion and the second flange portion,
The through-hole structure of a housing according to claim 4 , wherein the second flange portion has a gap between the housing and the housing. A through-hole structure of a housing that includes a combustion portion that burns fuel and has a part insertion hole formed in advance,
A component main body that is inserted into the component insertion hole of the housing from the outside and penetrates the housing; and a penetrating component that includes a flange protruding from the outer peripheral surface of the component main body;
A mounting base that is disposed so as to surround an outer peripheral edge of the component insertion hole on the outer surface of the housing and is fixed on one side to the outer surface of the housing, and a flange that is fixed on the other side of the mounting base A fixing portion configured to include a pressing portion that presses toward the one side from the other side, and forms a space that accommodates the flange portion together with the outer peripheral edge portion, and
A collar seal material interposed between the collar and the fixed part;
A fixing portion sealing material interposed between the mounting base and the pressing portion;
With
In the case, a communication hole that communicates the inside with the space is formed in advance,
A through-hole structure of a housing, wherein the housing and an insertion member disposed therein are fastened and fixed to each other by a fastening member that is inserted into the communication hole and penetrates the housing. The penetrating component includes an insulator body including the flange portion and the cylindrical component main body portion, and an electric component inserted into the component main body portion. The through-hole structure of the housing according to claim 6 . The housing further includes a fuel cell that generates power using a hydrogen-containing fuel and an oxidant,
The through-hole structure of a housing according to any one of claims 1 to 7 , wherein in the combustion section, surplus hydrogen-containing fuel in the fuel cell is burned as the fuel.