JP3793364B2

JP3793364B2 - Combustion appliance exhaust fittings

Info

Publication number: JP3793364B2
Application number: JP10011599A
Authority: JP
Inventors: 佳之柴山
Original assignee: Rinnai Corp
Current assignee: Rinnai Corp
Priority date: 1999-04-07
Filing date: 1999-04-07
Publication date: 2006-07-05
Anticipated expiration: 2019-04-07
Also published as: JP2000291939A

Description

【０００１】
【発明の属する技術分野】
本発明は、燃焼器具の排気筒をこれより大径の排気管に接続するための燃焼器具の排気接続具の技術分野に属するものである。
【０００２】
【従来の技術】
燃焼器具の排気筒をこれより大径の既設の排気管に接続する場合、従来は、図４に示すような、既設の排気管１と接続された筒体１００と、この筒体１００に連続形成された連結片部２１０と、燃焼器具６の排気筒２と接続された嵌合筒部２００とを具備する接続具３００が使用されていた。
【０００３】
【発明が解決しようとする課題】
ところで、前記接続具３００は、既設の排気管１に接続すると、連結片部２１０と嵌合筒部２００との寸法分、既設の排気管１が長くなる。そのため、この接続具３００を用いて燃焼器具６の排気筒２を既設の排気管１に接続すると、燃焼器具６と既設の排気管１との間に広い無駄なスペースができてしまうという問題があった。また、壁等に設置した燃焼器具６と天井との間が狭い場合、その天井に既設された排気管１と燃焼器具６の排気筒２との接続ができなくなるという問題もあった。
【０００４】
本発明は、『燃焼器具の排気筒をこれより大径の排気管に接続するための接続具であって、前記排気管端部に嵌め込まれた筒体と、この筒体に連続形成された前記排気筒先端部と嵌合される嵌合筒部とを具備する燃焼器具の排気接続具』において、燃焼器具設置の省スペース化を図ると共に、既設排気管のある壁や天井等と燃焼器具との間が狭い場合でもその既設の排気管よりも小径に形成された燃焼器具の排気筒の接続を可能とすることをその課題とする。
（１項）
【０００５】
【課題を解決するための手段】
前記課題を解決するための本発明の技術的手段は、
『前記嵌合筒部は、前記筒体の一方の開口端部から内側に折返した連結片部に、排気筒先端部を嵌め込み可能な長さに連続形成されて筒体内に配置し、前記嵌合筒部の内径は、排気筒の外径と略同径に形成され、且つ前記嵌合筒部の先端部は、前記排気筒が当接するように小径化されていることを特徴とする燃焼器具の排気接続具』である。
【０００６】
かかる技術的手段は、次のように作用する。
すなわち、前記排気管の入口部に本排気接続具を接続すると、筒体は、排気管に嵌合するように形成されているので、排気管の先端部分から出張ることなく排気管の入口部に嵌め込まれる。この状態で、嵌合筒部は、前記筒体の一方の開口端部から内側に折返した連結片部に連続形成されて筒体内に配置されているので、排気管の先端部分から出張ることがない。そして、この嵌合筒部に燃焼器具の排気筒を接続すると、排気筒が前記嵌合筒部に嵌め込まれた状態になるので、排気筒は排気管と連通接続されると共に、前記筒体内に収容される。
また、嵌合筒部の先端部は小径化されて、この先端部に燃焼器具の排気筒が当接しこれ以上燃焼器具排気筒を奥に押し込めないようにしている。
【０００７】
【発明の効果】
本発明は、前記構成であるから、次の特有の効果を有する。
すなわち、本発明の燃焼器具の排気接続具を介して、燃焼器具の排気筒をこれより大径の排気管に接続すると、筒体は排気管の先端部分から出張ることなく排気管の入口部に嵌め込まれているので、前記排気筒は、排気管と連通接続されると共に、排気管内に収容される。そのため、この排気筒を突出させた燃焼器具の背面を排気管の入口部に近づけた状態で燃焼器具を設置できる。従って、燃焼器具設置のための省スペース化を図ることができる。
【０００８】
また、筒体は、排気管に嵌め込めるように形成されているので、排気管の先端部分から出張ることなく、また、嵌合筒部は前記筒体の一方の開口端部から内側に折返した連結片部に連続形成されて筒体内に配置されているので、その寸法分、排気管としての既設排気管を長くすることもない。従って、既設排気管のある壁や天井等と燃焼器具との間が狭い場合でも既設の排気管に燃焼器具の排気筒の接続を可能とし、燃焼器具の施工に影響を及ぼすこともない。
（２項）
前記１項において、『前記筒体における前記排気管との嵌合部分に、本排気接続具を前記排気管に固定するための固定手段を設けた』ものでは、本排気接続具が排気管としての既設排気管に固定され、この既設排気管から本排気接続具が抜け落ちることを防止できる。
（３項）
前記１項において、『前記嵌合筒部における前記燃焼器具排気筒との嵌合部分に、本排気接続具に対する排気筒の位置決めをするためのストッパを設けた』ものでは、排気筒の接続時は、排気筒がこのストッパで係止して位置決めされてそれ以上奥の方へ押し込めないようにできる。また、排気筒が嵌合筒部に固定され、本排気接続具から器具排気筒が抜け落ちることを防止できる。
【０００９】
（４項）
前記１項において、『前記燃焼器具に臨む筒体の開口端部に、前記排気管の入口部と当接するフランジ部を形成した』ものでは、本排気接続具を、既設排気管に取付けるときや燃焼器具の排気筒を接続するときに、前記フランジ部がその既設排気管の入口部に当接されてそれ以上本排気接続具が既設排気管の奥の方へ押し込まれることを防止できる。
（５項）
前記３項において、『前記嵌合筒部と前記排気筒との嵌合部分における、前記ストッパよりも排気管の奥に位置する排気筒先端付近にＯリングを介在させた』ものでは、嵌合筒部と燃焼器具排気筒との気密性を確保することができ、燃焼器具の排ガスが既設排気管との接続部分から外部へ漏れ出すことを防止できる。また、前記Ｏリングは、前記３項におけるストッパよりも奥の排気筒先端付近に介在させてあるので、排気筒の接続時、排気管の接続を略完了する段階で排気管と接触する。従って、排気筒の接続に際してこのＯリングとの摩擦が障害となるようなことも極力防止できる。
【００１０】
【発明の実施の形態】
以下に、本発明の実施の形態について図面を参照しながら説明する。
図１は、本発明の実施の形態による燃焼器具の排気接続具の構成を示す断面図である。
【００１１】
本実施の形態の排気接続具は、燃焼器具６の排気筒２をこれより大径の既設排気管１に接続するための接続具であり、既設の排気管１と接続された筒体１０と、この筒体１０より小径に形成され、燃焼器具６の排気筒２と接続された嵌合筒部２０とを具備する。
【００１２】
前記筒体１０は、その外径が既設排気管１の内径と略同径に形成されており、既設排気管１内に嵌合される。筒体１０の先端部分１１は、面取りされており、本排気接続具の既設排気管１の取付け時やその取扱い時に先端部分１１と接触してケガすることのないようにしている。また、この筒体１０は、側部にネジ穴１３が設けられており、既設排気管１にも設けたネジ穴と一致させてこれにネジ７を通しネジ止めされる。これによって、本排気接続具が既設の排気管１に固定される。さらに、筒体１０の後端部１２には、外側へ伸びるフランジ部３が形成されており、本排気接続具を、既設の排気管１に取付けるときや、燃焼器具６の排気筒を接続するときに、前記フランジ部３が既設排気管１の入口部８に当接されて本排気接続具が既設排気管１の奥の方へ押し込まれてしまうようなことを防止している。なお、排気管１と筒体１０は、気密性が確保されるような嵌め合わせ構造になっており、この排気管１と筒体１０の間の気密性が確保されているが、そのような嵌め合わせ構造になっていなくても、排気管１には気密性保持のためのＯリングを端部に介在させたり、シールのために外部からシリコン、グリスなどのシール材を塗布したり、あるいはアルミテープにて周囲を覆い、排気管１と筒体１０の間の気密性を確保するようにしてもよい。
【００１３】
前記嵌合筒部２０は、前記筒体１０の後端部分１２から内側に折返した連結片部２１に連成されており、筒体１０内に収容配置される。その連結片部２１は、筒体１０の内径と同径の部分から徐々に絞って嵌合筒部２０と同径の部分とを形成する略テーパ状に加工されている。また、その内径は、燃焼器具６の排気筒２の外径と略同径に形成されており、燃焼器具排気筒２に嵌合される。嵌合筒部２０の内側部には、突部４が形成されており、この突部４がストッパとして燃焼器具排気筒２の外側部と係合し、これによって、燃焼器具排気筒２が位置決めされる。嵌合筒部２０の先端部２２は、やや小径化されて、この部分２２に燃焼器具６の排気筒２が当接しこれ以上燃焼器具排気筒２を奥に押し込めないようにしている。また、この嵌合筒部２０と燃焼器具排気筒２との間にＯリング５が介在されており、これにより、嵌合筒部２０と燃焼器具排気筒２との気密性が確保されるので、燃焼器具６の排ガスが外部へ漏れ出すことを防止している。
【００１４】
以上のように、本実施の形態によれば、既設排気管１の入口部８に本排気接続具を接続すると、本排気接続具の筒体１０は、従来のものと同様に既設排気管１に嵌合するように形成されているので、既設排気管１の先端部分から出張ることなく既設排気管１の入口部８に嵌め込まれる。この状態で、本排気接続具の嵌合筒部２０は、前記筒体１０の後端部１２から内側に折返した連結片部２１に連続形成されて筒体１０内に配置されているので、既設排気管１の先端部分から出張ることがない。そして、この嵌合筒部２０に燃焼器具の排気筒２を接続すると、排気筒２は、前記嵌合筒部２０に嵌め込まれた状態になるので、前記筒体１０内に収容される。これにより、従来のものより大幅に器具背面６１を既設排気管１の入口部８付近にまで近づけて設置でき（図５中のＷ１、図１中のＷ参照）、これにより、器具設置のための省スペース化を図ることができる。
【００１５】
また、本排気接続具がその寸法分、既設の排気管１を長くすることもないので、既設排気管１のある壁や天井等と燃焼器具６との間が狭い場合でも既設の排気管１に燃焼器具６の排気筒２の接続を可能とし、燃焼器具６の施工に影響を及ぼすこともない。
【００１６】
さらに、本排気接続具は、全体が電気伝導性のある金属で形成することにより、既設排気管１と燃焼器具排気筒２との間に電気を通して両者の接続を確かめるための導電性を確保することができる。
【００１７】
なお、本発明に係る燃焼器具の排気接続具は、前記実施の形態のものに限らず、図２に示すように、その筒体１０ｂを、既設の排気管１の外側に嵌合するように形成したものでも良い。
【００１８】
さらに、前記実施の形態では、排気接続具はネジ７によるネジ止めで既設排気管１に固定されているが、図３に示すように、既設排気管１の内側面に取付けた板バネ７１に筒体１０をロックするロック機構により既設排気管１に固定するものでも良い。
【図面の簡単な説明】
【図１】本発明の実施の形態による燃焼器具の排気接続具の構成を示す断面図である。
【図２】他の実施の形態による燃焼器具の排気接続具の構成を示す断面図である。
【図３】他の実施の形態による燃焼器具の排気接続具の構成を示す断面図である。
【図４】従来の燃焼器具の排気接続具の構成を示す断面図である。
【符号の説明】
１既設排気管（大径の排気管）
２燃焼器具排気筒
３フランジ部
４突部（ストッパ）
５Ｏリング
６燃焼器具
７ネジ（固定手段）
８既設排気管の入口部
１０筒体
１１筒体の先端部
１２筒体の後端部
２０嵌合筒部
２１連結片部
２２嵌合筒部の先端部分
６０器具背面[0001]
BACKGROUND OF THE INVENTION
The present invention belongs to the technical field of an exhaust connector for a combustion appliance for connecting an exhaust pipe of the combustion appliance to an exhaust pipe having a larger diameter.
[0002]
[Prior art]
When connecting an exhaust pipe of a combustion appliance to an existing exhaust pipe having a larger diameter than this, conventionally, a cylindrical body 100 connected to the existing exhaust pipe 1 as shown in FIG. The connection tool 300 which comprises the formed connecting piece part 210 and the fitting cylinder part 200 connected to the exhaust pipe 2 of the combustion appliance 6 has been used.
[0003]
[Problems to be solved by the invention]
By the way, when the connection tool 300 is connected to the existing exhaust pipe 1, the existing exhaust pipe 1 becomes longer by the size of the connecting piece part 210 and the fitting cylinder part 200. Therefore, when the exhaust pipe 2 of the combustion appliance 6 is connected to the existing exhaust pipe 1 using the connection tool 300, there is a problem that a large useless space is created between the combustion appliance 6 and the existing exhaust pipe 1. there were. Further, when the space between the combustion appliance 6 installed on the wall or the like and the ceiling is narrow, there is a problem that the exhaust pipe 1 already installed on the ceiling and the exhaust pipe 2 of the combustion appliance 6 cannot be connected.
[0004]
The present invention provides a connecting tool for connecting an exhaust pipe of a combustion appliance to an exhaust pipe having a larger diameter, and a cylindrical body fitted into an end of the exhaust pipe, and continuously formed on the cylindrical body. In the exhaust connector for a combustion appliance having a fitting cylinder portion to be fitted with the exhaust cylinder tip, the space for the installation of the combustion appliance is reduced, and the wall or ceiling with the existing exhaust pipe and the combustion appliance It is an object of the present invention to enable connection of an exhaust pipe of a combustion appliance having a smaller diameter than the existing exhaust pipe even when the distance between the two is narrow.
(1)
[0005]
[Means for Solving the Problems]
The technical means of the present invention for solving the above-mentioned problems are as follows:
“The fitting tube portion is continuously formed in a length that allows the tip of the exhaust tube to be fitted to a connecting piece portion that is folded inward from one opening end portion of the tube body, and is disposed in the tube body. Combustion characterized in that an inner diameter of the combined cylinder portion is formed to be substantially the same as an outer diameter of the exhaust tube, and a tip end portion of the fitting tube portion is reduced in diameter so that the exhaust tube comes into contact therewith. "Exhaust connector for appliances".
[0006]
Such technical means operate as follows.
That is, when the exhaust connector is connected to the inlet portion of the exhaust pipe, the cylindrical body is formed so as to be fitted to the exhaust pipe. It is inserted in. In this state, the fitting cylinder portion is continuously formed on the connecting piece portion folded inward from the one opening end portion of the cylinder body and is disposed in the cylinder body, so that it travels from the tip portion of the exhaust pipe. There is no. When the exhaust tube of the combustion appliance is connected to the fitting tube portion, the exhaust tube is fitted into the fitting tube portion, so that the exhaust tube is connected to the exhaust pipe and is connected to the inside of the tube body. Be contained.
In addition, the tip of the fitting cylinder is reduced in diameter so that the exhaust pipe of the combustion appliance comes into contact with this tip so that the combustion appliance exhaust pipe cannot be pushed any further.
[0007]
【The invention's effect】
Since the present invention is configured as described above, the present invention has the following specific effects.
That is, when the exhaust pipe of the combustion appliance is connected to the exhaust pipe having a larger diameter than the exhaust pipe of the combustion appliance according to the present invention, the cylindrical body does not travel from the tip of the exhaust pipe and travels to the inlet portion of the exhaust pipe. The exhaust pipe is connected to the exhaust pipe and is accommodated in the exhaust pipe. Therefore, the combustion appliance can be installed in a state in which the back surface of the combustion appliance from which the exhaust tube protrudes is brought close to the inlet portion of the exhaust pipe. Therefore, space saving for installing the combustion appliance can be achieved.
[0008]
Further, since the cylindrical body is formed so as to be fitted into the exhaust pipe, it does not travel from the distal end portion of the exhaust pipe, and the fitting cylindrical part is folded inward from one open end of the cylindrical body. Since the connecting piece is continuously formed and disposed in the cylinder, the existing exhaust pipe as the exhaust pipe is not lengthened by the size. Therefore, even if the space between the wall or ceiling with the existing exhaust pipe and the combustion appliance is narrow, the exhaust pipe of the combustion appliance can be connected to the existing exhaust pipe, and the construction of the combustion appliance is not affected.
(2)
In the above item 1, in the case where “a fixing means for fixing the exhaust connector to the exhaust pipe is provided in the fitting portion of the cylindrical body with the exhaust pipe”, the exhaust connector is used as an exhaust pipe. It is fixed to the existing exhaust pipe, and the exhaust connector can be prevented from falling off from the existing exhaust pipe.
(Section 3)
In the above item 1, in the case where “a stopper for positioning the exhaust pipe with respect to the exhaust connector is provided at a fitting portion of the fitting cylinder portion with the combustion appliance exhaust pipe”, when the exhaust pipe is connected The exhaust tube is locked by this stopper and positioned so that it cannot be pushed further into the back. In addition, the exhaust tube is fixed to the fitting tube portion, and the appliance exhaust tube can be prevented from falling off from the exhaust connector.
[0009]
(Section 4)
In the above-mentioned item 1, in the case where “the flange portion that contacts the inlet portion of the exhaust pipe is formed at the opening end portion of the cylinder facing the combustion appliance”, when the exhaust connector is attached to the existing exhaust pipe, When the exhaust pipe of the combustion appliance is connected, the flange portion is brought into contact with the inlet portion of the existing exhaust pipe, so that the exhaust connector can be prevented from being pushed further into the existing exhaust pipe.
(Section 5)
In the above-mentioned item 3, in the case where “the O-ring is interposed near the tip of the exhaust pipe located behind the stopper in the fitting part between the fitting cylinder part and the exhaust pipe”, The airtightness between the cylinder part and the combustion appliance exhaust cylinder can be ensured, and the exhaust gas of the combustion appliance can be prevented from leaking outside from the connecting portion with the existing exhaust pipe. Further, since the O-ring is interposed in the vicinity of the tip of the exhaust pipe behind the stopper in the above item 3, when the exhaust pipe is connected, it comes into contact with the exhaust pipe when the connection of the exhaust pipe is substantially completed. Therefore, it is possible to prevent the friction with the O-ring from becoming an obstacle when connecting the exhaust pipes.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a cross-sectional view showing a configuration of an exhaust connector of a combustion appliance according to an embodiment of the present invention.
[0011]
The exhaust connector of the present embodiment is a connector for connecting the exhaust pipe 2 of the combustion appliance 6 to the existing exhaust pipe 1 having a larger diameter than the exhaust pipe 2, and the cylinder 10 connected to the existing exhaust pipe 1 and The fitting cylinder portion 20 is formed to have a smaller diameter than the cylinder body 10 and is connected to the exhaust cylinder 2 of the combustion appliance 6.
[0012]
The cylindrical body 10 has an outer diameter that is substantially the same as the inner diameter of the existing exhaust pipe 1, and is fitted into the existing exhaust pipe 1. The distal end portion 11 of the cylindrical body 10 is chamfered so as not to be injured by contact with the distal end portion 11 when the existing exhaust pipe 1 of the exhaust connector is attached or handled. Further, the cylindrical body 10 is provided with a screw hole 13 on a side portion thereof, and is screwed through a screw 7 so as to coincide with the screw hole provided also in the existing exhaust pipe 1. As a result, the exhaust connector is fixed to the existing exhaust pipe 1. Further, a flange portion 3 extending outward is formed at the rear end portion 12 of the cylinder body 10, and when the exhaust connector is attached to the existing exhaust pipe 1 or an exhaust cylinder of the combustion appliance 6 is connected. At this time, the flange portion 3 is brought into contact with the inlet portion 8 of the existing exhaust pipe 1 to prevent the exhaust connector from being pushed into the depth of the existing exhaust pipe 1. The exhaust pipe 1 and the cylinder 10 have a fitting structure that ensures airtightness, and the airtightness between the exhaust pipe 1 and the cylinder 10 is ensured. Even if it does not have a fitting structure, an O-ring for maintaining airtightness is interposed at the end of the exhaust pipe 1, or a sealing material such as silicon or grease is applied from the outside for sealing, or The periphery may be covered with an aluminum tape to ensure airtightness between the exhaust pipe 1 and the cylinder 10.
[0013]
The fitting cylinder portion 20 is connected to a connecting piece portion 21 that is turned inward from the rear end portion 12 of the cylinder body 10, and is accommodated in the cylinder body 10. The connecting piece portion 21 is processed into a substantially tapered shape that gradually narrows down from a portion having the same diameter as the inner diameter of the cylindrical body 10 to form a portion having the same diameter as the fitting cylindrical portion 20. Further, the inner diameter is formed to be substantially the same as the outer diameter of the exhaust pipe 2 of the combustion appliance 6 and is fitted to the combustion appliance exhaust pipe 2. A protrusion 4 is formed on the inner side of the fitting cylinder 20, and the protrusion 4 engages with the outer side of the combustion appliance exhaust cylinder 2 as a stopper, thereby positioning the combustion appliance exhaust cylinder 2. Is done. The distal end portion 22 of the fitting cylinder portion 20 is slightly reduced in diameter so that the exhaust cylinder 2 of the combustion appliance 6 abuts on this portion 22 so that the combustion appliance exhaust cylinder 2 cannot be pushed any further. Further, an O-ring 5 is interposed between the fitting cylinder portion 20 and the combustion appliance exhaust cylinder 2, thereby ensuring airtightness between the fitting cylinder portion 20 and the combustion appliance exhaust cylinder 2. The exhaust gas from the combustion appliance 6 is prevented from leaking outside.
[0014]
As described above, according to the present embodiment, when the exhaust connector is connected to the inlet portion 8 of the existing exhaust pipe 1, the cylinder 10 of the exhaust connector is similar to the conventional exhaust pipe 1. Is fitted into the inlet portion 8 of the existing exhaust pipe 1 without making a business trip from the tip portion of the existing exhaust pipe 1. In this state, the fitting cylinder part 20 of the exhaust connector is continuously formed on the connecting piece part 21 that is folded inward from the rear end part 12 of the cylinder 10 and is disposed in the cylinder 10. There is no business trip from the tip of the existing exhaust pipe 1. And if the exhaust pipe 2 of a combustion appliance is connected to this fitting cylinder part 20, since the exhaust pipe 2 will be in the state fitted by the said fitting cylinder part 20, it will be accommodated in the said cylinder 10. FIG. Thereby, it is possible to install the instrument rear surface 61 closer to the vicinity of the inlet portion 8 of the existing exhaust pipe 1 than the conventional one (see W1 in FIG. 5 and W in FIG. 1). Can be saved.
[0015]
Further, since the present exhaust connector does not lengthen the existing exhaust pipe 1 by the size, the existing exhaust pipe 1 even when the space between the wall or ceiling where the existing exhaust pipe 1 is located and the combustion appliance 6 is narrow. In addition, the exhaust pipe 2 of the combustion appliance 6 can be connected, and the construction of the combustion appliance 6 is not affected.
[0016]
Furthermore, this exhaust connector is formed entirely of electrically conductive metal, thereby ensuring conductivity for confirming the connection between the existing exhaust pipe 1 and the combustion appliance exhaust cylinder 2 through electricity. be able to.
[0017]
In addition, the exhaust connector of the combustion appliance according to the present invention is not limited to that of the above embodiment, and as shown in FIG. 2, the cylindrical body 10 b is fitted to the outside of the existing exhaust pipe 1. It may be formed.
[0018]
Furthermore, in the above-described embodiment, the exhaust connector is fixed to the existing exhaust pipe 1 by screwing with screws 7, but as shown in FIG. 3 , the exhaust spring is attached to the leaf spring 71 attached to the inner side surface of the existing exhaust pipe 1. It may be fixed to the existing exhaust pipe 1 by a lock mechanism that locks the cylindrical body 10.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a configuration of an exhaust connector of a combustion appliance according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view showing a configuration of an exhaust connector of a combustion appliance according to another embodiment.
FIG. 3 is a cross-sectional view showing a configuration of an exhaust connector of a combustion appliance according to another embodiment.
FIG. 4 is a cross-sectional view showing a configuration of an exhaust connector of a conventional combustion appliance.
[Explanation of symbols]
1 Existing exhaust pipe (large diameter exhaust pipe)
2 Combustion device exhaust 3 Flange 4 Projection (stopper)
5 O-ring 6 Combustion tool 7 Screw (fixing means)
8 Inlet portion 10 of existing exhaust pipe Cylinder body 11 Front end portion of cylinder body 12 Rear end portion 20 of cylinder body Fitting cylinder portion 21 Connecting piece 22 Front end portion 60 of fitting cylinder portion

Claims

A connecting device for connecting an exhaust pipe of a combustion appliance to an exhaust pipe having a larger diameter than the exhaust pipe, and a cylindrical body fitted into the exhaust pipe end, and an exhaust pipe tip portion continuously formed on the cylindrical body In an exhaust connector of a combustion appliance comprising a fitting cylinder portion fitted with
The fitting tube portion is continuously formed in a length that allows the exhaust tube tip portion to be fitted to the connecting piece portion folded inward from one opening end portion of the tube body, and is arranged in the tube body .
An inner diameter of the fitting tube portion is formed to be substantially the same as an outer diameter of the exhaust tube, and a distal end portion of the fitting tube portion is reduced in diameter so that the exhaust tube contacts. Exhaust fitting for combustion appliances.

The exhaust connector for a combustion appliance according to claim 1,
An exhaust connector for a combustion appliance, wherein a fixing means for fixing the exhaust connector to the exhaust pipe is provided at a fitting portion of the cylinder body with the exhaust pipe.

The exhaust connector for a combustion appliance according to claim 1,
An exhaust connector for a combustion appliance, wherein a stopper for positioning the exhaust tube with respect to the exhaust connector is provided at a fitting portion of the fitting tube portion with the exhaust tube.

The exhaust connector for a combustion appliance according to claim 1,
An exhaust connector for a combustion appliance, wherein a flange portion that comes into contact with an inlet portion of the exhaust pipe is formed at an opening end portion of a cylindrical body facing the combustion appliance.

The exhaust connector for a combustion appliance according to claim 3,
An exhaust connector for a combustion appliance, wherein an O-ring is interposed in the vicinity of a tip of an exhaust pipe located in a deeper portion of the exhaust pipe than the stopper in a fitting portion between the fitting cylinder part and the exhaust pipe.