CN104501191B - Smoke discharge pipe assembly for gas-fired equipment - Google Patents

Abstract

The invention provides a smoke exhaust pipe assembly for gas equipment, which at least includes a first smoke exhaust pipe and a second smoke exhaust pipe, and conductors are arranged on the first smoke exhaust pipe and the second smoke exhaust pipe. The smoke exhaust pipe assembly also includes a pipe connection mechanism, which is connected between the first smoke exhaust pipe and the second smoke exhaust pipe to realize the fixed mechanical connection of the first and second smoke exhaust pipes, and at the same time realize the first and second exhaust pipes The electrical connection of the conductors of the smoke pipe. By introducing the pipe connection mechanism, the mechanical connection between adjacent smoke exhaust pipes becomes stable and reliable, thereby reducing the situation of displacement, dislocation, or disengagement. Even if these situations occur, or the circuit formed by the conductors of the smoke exhaust pipe in series is disconnected due to failure to install according to the specifications, the control circuit of the gas water heater can detect it and take corresponding measures, such as stopping the operation of the water heater, so as to further avoid the leakage of exhaust gas. Give way.

Description

Exhaust pipe assemblies for gas appliances

technical field

The invention belongs to the field of household gas equipment, and in particular relates to a smoke exhaust pipeline for gas equipment.

Background technique

Household gas equipment includes gas water heaters, gas boilers, gas stoves, etc. These gas-fired devices usually require a fume hood and a smoke exhaust pipe to collect and exhaust the waste gas (including carbon monoxide and nitrogen oxides) generated by combustion during the operation of the device to the outside. The smoke exhaust pipeline is usually composed of multiple smoke exhaust pipes in series. These smoke exhaust pipes are manufactured by the manufacturer in accordance with the corresponding safety standards and need to be correctly assembled at the user's home in accordance with the corresponding specifications. However, due to cost considerations, users or distributors may use non-standard smoke pipes, or hire workers without professional training to assemble them, which may lead to unreliable connections of smoke exhaust pipes and the hidden danger of air leakage.

Chinese published invention patent application CN103615806A discloses a smoke exhaust pipe with conductors. When each section of the smoke exhaust pipe is connected to form a smoke exhaust pipeline, each section of the conductor is electrically connected and electrically connected to the control circuit of the gas water heater. Therefore, once the smoke exhaust pipes are displaced, dislocated or disengaged, the circuit formed by the conductors will also be disconnected, and the control circuit of the gas equipment will take corresponding measures, such as stopping the operation of the water heater.

However, the above design will cause many problems in practical application. For example, the connection of the smoke exhaust pipes first needs to ensure a stable connection between the various sections of the smoke exhaust pipes. A reliable connection method between the exhaust pipes is not provided.

Contents of the invention

The object of the present invention is to provide a smoke exhaust pipe assembly, the connection between the smoke exhaust pipes formed by it is stable, which can reduce the displacement, dislocation, or disengagement of the smoke exhaust pipe, and can also provide timely feedback.

In order to achieve the purpose of the above invention, the present invention provides a smoke exhaust pipe assembly for gas equipment, which at least includes a first smoke exhaust pipe and a second smoke exhaust pipe, and on the first smoke exhaust pipe and the second smoke exhaust pipe Both are equipped with conductors. The smoke exhaust pipe assembly also includes a pipe connection mechanism, which is connected between the first smoke exhaust pipe and the second smoke exhaust pipe to realize the fixed mechanical connection of the first and second smoke exhaust pipes, and at the same time realize the first and second exhaust pipes The electrical connection of the electrical conductor of the smoke pipe; the pipe connection mechanism includes a connecting ring fixedly sleeved on the adjacent ends of the first and second smoke exhaust pipes, and is arranged on the connecting ring to electrically connect the first and second smoke exhaust pipes. The conductive terminal of the conductor of the second smoke exhaust pipe; the first and second smoke exhaust pipes are also respectively provided with a lead seat, and a conductive sheet electrically connected to the corresponding conductor is provided on the lead seat; the conductive terminal The two ends of each are in contact with the corresponding conductive strips of the first and second exhaust pipes respectively.

In order to achieve the purpose of the above invention, the present invention also provides a smoke exhaust pipe assembly for gas equipment, which at least includes a first smoke exhaust pipe and a second smoke exhaust pipe, and the first smoke exhaust pipe and the second smoke exhaust pipe Conductors are provided on them. The smoke exhaust pipe assembly also includes a pipe connection mechanism, which is connected between the first smoke exhaust pipe and the second smoke exhaust pipe to realize the fixed mechanical connection of the first and second smoke exhaust pipes, and at the same time realize the first and second exhaust pipes The electrical connection of the electrical conductor of the smoke pipe; the pipe connection mechanism includes a connecting ring fixedly sleeved on the adjacent ends of the first and second smoke exhaust pipes, and is arranged on the connecting ring to electrically connect the first and second smoke exhaust pipes. The conductive terminal of the conductor of the second smoke exhaust pipe; the connecting ring includes a first part and a second part that are separately arranged and fixedly connected with the ends of the first and second smoke exhaust pipe; the conductive terminal includes The female terminal part arranged on the first part and electrically connected to the conductor of the first smoke exhaust pipe, and the female terminal part arranged on the second part and electrically connected to the conductor of the second smoke exhaust pipe male terminal part.

As a further improvement of the present invention, the conductor on each smoke exhaust pipe includes two wires; the conductive terminal is insulated and arranged on the connecting ring.

In order to achieve the purpose of the above invention, the present invention also provides a smoke exhaust pipe assembly for gas equipment, which at least includes a first smoke exhaust pipe and a second smoke exhaust pipe, and the first smoke exhaust pipe and the second smoke exhaust pipe Conductors are provided on them. The smoke exhaust pipe assembly also includes a pipe connection mechanism, which is connected between the first smoke exhaust pipe and the second smoke exhaust pipe to realize the fixed mechanical connection of the first and second smoke exhaust pipes, and at the same time realize the first and second exhaust pipes The electrical connection of the electrical conductor of the smoke pipe; the pipe connection mechanism includes at least two fasteners, and each fastener is fixedly connected to the adjacent ends of the first and second smoke exhaust pipes; on each smoke exhaust pipe The electrical conductor contains only one wire, and the two buckles have differentiated designs.

As a further improvement of the present invention, a sealing member is further provided between the first and second exhaust pipes.

Compared with the prior art, the beneficial effect of the present invention is: by introducing the pipe connection mechanism, the mechanical connection between adjacent smoke exhaust pipes becomes stable and reliable, thereby reducing the situation of displacement, dislocation, or disengagement . Even if these situations occur, or the circuit formed by the conductors of the smoke exhaust pipe in series is disconnected due to failure to install according to the specifications, the control circuit of the gas water heater can detect it and take corresponding measures, such as stopping the operation of the water heater, so as to further avoid the leakage of exhaust gas. Give way.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings that need to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the following descriptions related to the present invention The accompanying drawings are only some embodiments of the present invention, and those skilled in the art can obtain other drawings according to these drawings without any creative effort.

Fig. 1 is the schematic diagram that the exhaust pipe assembly of the present invention is connected with the gas water heater in the first embodiment;

Fig. 2 is a three-dimensional schematic diagram of two adjacent smoke exhaust pipes connected by a pipe connecting mechanism in Fig. 1;

Fig. 3 is similar to Fig. 2, wherein the connection ring in the pipe connection mechanism is removed;

Fig. 4 is a schematic perspective view of two adjacent exhaust pipes in Fig. 3 after they are disengaged;

What Fig. 5 shows is the three-dimensional schematic view of the connection ring of the pipe connection mechanism;

Fig. 6 is a three-dimensional schematic diagram of the exhaust pipe in Fig. 1 being fixedly installed on the wall through a wall fixing mechanism;

Fig. 7 is a three-dimensional schematic diagram of the opposite perspective of the smoke exhaust pipe and the wall installation mechanism assembly shown in Fig. 6;

Fig. 8 is a schematic perspective view of two adjacent smoke exhaust pipes connected by a pipe connecting mechanism in the second embodiment of the smoke exhaust pipe assembly of the present invention;

Fig. 9 is a three-dimensional schematic view after the two adjacent exhaust pipes in Fig. 8 are disengaged;

Fig. 10 is a schematic cross-sectional view along the longitudinal direction of the smoke exhaust pipe and the pipe connection mechanism assembly shown in Fig. 8;

Fig. 11 is a schematic plan view of two adjacent smoke exhaust pipes connected by a pipe connecting mechanism in the third embodiment of the smoke exhaust pipe assembly of the present invention;

Fig. 12 is a schematic plan view of another angle of view of the exhaust pipe in Fig. 11;

Fig. 13 is a schematic cross-sectional view of the fourth embodiment of the smoke exhaust pipe assembly of the present invention, in which the smoke exhaust pipe is fixed and installed on the wall through a wall fixing mechanism;

Fig. 14 is a three-dimensional exploded schematic diagram of the smoke exhaust pipe and the wall installation mechanism assembly shown in Fig. 13;

Fig. 15 is a schematic cross-sectional view of the fifth embodiment of the smoke exhaust pipe assembly of the present invention, in which the smoke exhaust pipe is fixed and installed on the wall through a wall fixing mechanism;

16A-16C are schematic diagrams of the assembly of the smoke exhaust pipe and the wall installation mechanism assembly shown in FIG. 15 installed on the wall.

detailed description

The present invention will be described in detail below in conjunction with various embodiments shown in the drawings. However, these embodiments do not limit the present invention, and any structural, method, or functional changes made by those skilled in the art according to these embodiments are included in the protection scope of the present invention.

Gas equipment uses combustible gas as fuel, such as natural gas, city gas, liquefied petroleum gas, biogas, etc., and provides heat by burning combustible gas to meet the needs of users. For example, gas water heaters that provide domestic hot water can also provide domestic Gas boilers for hot water and heating needs, and gas cookers, etc. Next, the smoke exhaust pipe assembly of the present invention will be described by taking a gas water heater as an example.

As shown in Figure 1, the gas water heater 80 can be exhausted through the smoke exhaust pipeline formed by the connection of various exhaust pipes, or the exhaust gas can be directly exhausted through the elbow pipe, depending on the installation position of the gas water heater 80 in the house and the location of the house. Layout depends. The gas water heater may include a casing, a burner accommodated in the casing, a heat exchanger, a smoke collecting hood, and a fan. The heat generated by the combustion of the burner is absorbed by the water flowing through the heat exchanger through the heat exchanger to generate hot water; the smoke generated by the combustion is collected by the smoke collection hood driven by the fan, and is discharged through the smoke exhaust hood connected to the smoke collection hood. pipe is discharged. Since the structure and working principle of the gas water heater are well known to those skilled in the art, the applicant will not repeat them here.

With reference to Fig. 2 to Fig. 7, the smoke exhaust pipes that make up the smoke exhaust pipeline can be straight pipes, such as smoke exhaust pipes 11, 12, 13, or curved pipes, such as smoke exhaust pipe 14; they can be intermediate pipes , such as the smoke exhaust pipes 11, 12, 14, can also extend out of the end pipe of the wall 90, such as the smoke exhaust pipe 13. The configurations of the two longitudinal ends of each intermediate pipe may be the same, and the configurations of the two ends of each intermediate pipe may be complementary, which facilitates the manufacture and assembly of the smoke exhaust pipe. A groove extending longitudinally is formed on the outer wall of each intermediate tube 11 , 12 , 14 , and a conductor 41 is accommodated in the groove. In this embodiment, the electrical conductor 41 is a cable comprising two wires 411, 412, and wire holders 511 are respectively provided at the longitudinal ends of each intermediate tube 11, 12, 14, and the wires 411, 412 extend into The wire seat 511 is electrically connected to two conductive sheets 5111 and 5112 on the surface of the wire seat.

2 to 5 show that the adjacent first and second exhaust pipes 11 and 12 are mechanically and electrically connected through a pipe connection mechanism. Adjacent ends of the first smoke exhaust pipe 11 and the second smoke exhaust pipe 12 are respectively provided with a guide post 112 and a guide groove 122 to facilitate the smooth combination of the two smoke exhaust pipes. In this embodiment, the end of the second smoke exhaust pipe 12 is sheathed outside the end of the first smoke exhaust pipe 11 . On the inner wall of the end of the second exhaust pipe 12, a receiving groove is recessed along the circumferential direction, and a sealing member 101 is embedded in the receiving groove, so that after the first and second exhaust pipes 11, 12 are connected, the two The joint of the exhaust pipe forms a seal. In this embodiment, the sealing member 101 is a sealing ring made of rubber sealing material. Those skilled in the art can easily imagine that, in other embodiments, the positions of the guide post and the guide groove can be set interchangeably, and the sealing member can also be sleeved on the outer wall of the end of the first exhaust pipe. In this embodiment, positioning posts 111 , 121 are protruded from the outer walls of the adjacent ends of the first and second exhaust pipes 11 , 12 .

The pipe connection mechanism includes a fixed connection device to realize reliable mechanical connection between the first and second exhaust pipes 11,12. As shown in FIG. 5 , the fixed connection device includes a connection ring 21 . The connecting ring 21 includes a terminal receiving cavity 211 , a positioning hole 212 , and a mounting hole 213 . The pipe connection mechanism also includes conductive terminals fixedly arranged on the connection ring 21 for realizing the electrical connection between the conductors 41 of the first and second exhaust pipes 11 and 12 . In this embodiment, there are two conductive terminals 512 (only one is shown in FIG. 5 ), both of which are accommodated in the terminal accommodating cavity 211 . The conductive terminal 512 includes a terminal body and elastic contact arms 5121 extending from two ends of the terminal body. The terminal main body is fixedly disposed in the receiving cavity 211 , and its side facing the wall of the receiving cavity 211 is covered with an insulating layer to prevent the conductive terminal 512 from being electrically connected to the connecting ring 21 .

During installation, the connecting ring 21 is sleeved outside the adjacent ends of the first and second smoke exhaust pipes 11, 12, and the connecting ring 21 is connected to the first and second exhaust pipes through the cooperation of the positioning posts 111, 121 and the positioning holes 212. The exhaust pipes 11, 12 remain relatively fixed. A fastener (not shown), such as a screw, can pass through the mounting hole so that the connecting ring is tightly sleeved on the smoke exhaust pipe, so that the first and second smoke exhaust pipes 11 and 12 are firmly connected together. At the same time, the two elastic contact arms 5121 of the conductive terminal 512 elastically press against the corresponding conductive sheets 5111, 5112 on the lead seats of the first and second smoke exhaust pipes 11, 12, thereby realizing the contact between the conductors 41 of the two smoke exhaust pipes. electrical connection. By introducing the pipe connection mechanism, the mechanical connection between adjacent smoke exhaust pipes becomes stable and reliable, thereby reducing the situation of displacement, dislocation, or disengagement. Even if these situations occur, or the circuit formed by the conductors of the smoke exhaust pipe in series is disconnected due to failure to install according to the specifications, the control circuit of the gas water heater can detect it and take corresponding measures, such as stopping the operation of the water heater, so as to further avoid the leakage of exhaust gas. Give way.

Referring to Fig. 6 and Fig. 7, the end exhaust pipe 13 extends out of the wall, and is kept relatively fixed with the wall through the wall installation mechanism. One end of the terminal smoke exhaust pipe 13 located in the room is mechanically and electrically connected to the adjacent middle smoke exhaust pipe 12 through the above-mentioned pipe connection mechanism. The wall mounting mechanism includes a mounting flange 31 having a central receiving hole for the exhaust pipe 13 to extend through. The size of the central receiving hole is equivalent to the cross-sectional size of the smoke exhaust pipe 13, so that even if there is a headwind outdoors, the exhaust gas discharged will not be blown back indoors through the gap between the smoke exhaust pipe and the wall mounting hole. The side of the mounting flange 31 facing the wall is provided with an annular groove for accommodating a sealing member 311. In this embodiment, the sealing member is a sealing ring made of rubber material. After the installation flange 31 is installed on the wall, due to the effect of the sealing member 311, the discharged exhaust gas can be further prevented from returning to the room through the gap between the installation flange and the wall. The mounting flange 31 is provided with a mounting hole 313 through which a fixing device, such as a screw, can pass through the mounting hole 313 to fix the mounting flange 31 to the wall.

As shown in FIG. 7 , a switch 61 is arranged on the wall-facing side of the mounting flange 31 , and the switch 61 is connected in series with the conductor 41 of the exhaust pipe 13 . The switch can be a contact switch such as a press-fit switch or a reed switch, or various non-contact switches such as a proximity switch or a photoelectric switch. When the mounting flange 31 is fixed on the wall 90, the switch 61 is closed. At this time, the two parallel wires 411, 412 of the conductor 41 will have current passing through, but the current direction is opposite. Due to the installation of the wall mechanism, the connection between the smoke exhaust pipe and the wall is stable, so that the smoke exhaust pipe will not be displaced, misplaced, or disengaged due to easy shaking. Even if these situations occur, or the switch connected in series in the circuit is disconnected due to failure to install according to the specifications, the control circuit of the gas water heater can detect it and take corresponding measures, such as stopping the operation of the water heater, so as to further avoid the leakage of exhaust gas.

8 to 10 disclose the second embodiment of the exhaust pipe assembly of the present invention. The main difference from the first embodiment is that the connecting ring includes a first part 221 and a second part 222 which are separately arranged. The first part 221 and the second part 222 are respectively fixedly connected to adjacent ends of the first smoke exhaust pipe 11 and the second smoke exhaust pipe 12 by screws. The first part 221 and the second part 222 are provided with terminal bases 521 and 522 respectively, and the conductive terminals include female terminals disposed in the terminal base 521 and correspondingly electrically connected to the two wires of the conductor of the first exhaust pipe 11 (not shown), and the male terminal 5221 arranged in the terminal base 521 and correspondingly electrically connected to the two wires of the conductor of the second exhaust pipe 11 . When the first and second exhaust pipes 11 and 12 are connected, the male terminal 5221 is in electrical contact with the female terminal, and the first part 221 and the second part 222 are tightly connected together by screws. A dust cover 223 is also provided outside the assembled terminal bases 521 and 522 . Likewise, a sealing member 102 is provided at the joint of the first and second exhaust pipes 11 and 12 to ensure reliable sealing of the two at the joint.

Figure 11 and Figure 12 disclose the third embodiment of the exhaust pipe assembly of the present invention. In this embodiment, the conductor 43 only includes one wire, and the smoke exhaust pipe made of metal material can serve as another wire. The fixed connection device includes at least two fasteners 231, 232, which can be arranged at one end of the smoke exhaust pipe. When the first and second smoke exhaust pipes 11, 12 are connected, the two fasteners 231 , 232 buckle the ends of adjacent smoke exhaust pipes respectively, so as to realize a reliable mechanical connection between the smoke exhaust pipes. In addition, the fasteners 231 and 232 also serve as conductive terminals to ensure the electrical connection between the conductors of the smoke exhaust pipe. One of the buckling parts 231 is disposed adjacent to the conductor 43 , and has a differentiated design from the other buckling part 232 , for example, has a different structure, a different size, or a different color. Through this design, it can be ensured that when the smoke exhaust pipe is connected, the conductors on the smoke exhaust pipe are correspondingly connected together without being wrongly connected. Likewise, a sealing member 103 is provided at the joint of the first and second exhaust pipes 11 and 12 to ensure reliable sealing of the two at the joint.

Figure 13 and Figure 14 disclose the fourth embodiment of the exhaust pipe assembly of the present invention. In this embodiment, the wall installation mechanism includes an installation flange 321 and a fixing device. Wherein, the fixing device includes a positioning piece 322 arranged around the smoke exhaust pipe 13 , an additional mounting flange 323 with a receiving hole for the smoke exhaust pipe 13 to pass through, and an annular wedge 324 . After the wall installation mechanism is installed on the wall body 90, the installation flange 321 and the additional installation flange 323 are located on both sides of the wall body 90, and the side of the installation flange 321 facing away from the wall body 90 abuts against the positioning member 322, The side of the additional mounting flange 323 facing away from the wall is pressed by the wedge, so that the exhaust pipe 13 is firmly connected to the wall 90 . Same as the first embodiment, a seal 325 and a switch 62 are provided on the side of the mounting flange 321 facing the wall 90 .

Figure 15 and Figures 16A-16C disclose a fifth embodiment of the exhaust pipe assembly of the present invention. In this embodiment, the wall installation mechanism includes an installation flange 331 and a fixing device. The fixing device includes a positioning piece 332 and an annular wedge block 333 . The positioning member 332 has a first arm 3321 and a second arm 3322 arranged at an angle, and a torsion spring 3323 cooperating with the first arm 3321 and the second arm 3322 . Wherein, the first arm 3321 and the second arm 3322 can integrally pivot around a pivot, and the torsion spring 3323 is disposed on the pivot. Furthermore, the first arm 3321 is shorter than the second arm 3322 . In this embodiment, the switch 63 is arranged on the exhaust pipe 13 and can cooperate with the first arm 3321 .

Due to the effect of the torsion spring 3323 , in a natural state, the first arm 3321 is close to the smoke exhaust pipe 13 , while the second arm 3322 is away from the smoke exhaust pipe 13 . When the smoke exhaust pipe 13 extends through the wall, the first arm 3321 leans against the smoke exhaust pipe 13 due to the interference of the wall, and returns to its original shape after the positioning member 332 loses interference with the wall 90 . The mounting flange 331 and the wedge block 333 are disposed on the other side of the wall body 90 relative to the positioning member 332 . When the wall mounting mechanism is installed on the wall, the side of the mounting flange 331 facing away from the wall 90 is pressed by the wedge block 333, and the second arm 3322 of the locating member is against the wall 90, while the first arm 3321 then presses switch 63 to close the switch. Same as the first embodiment, a seal 334 is provided on the side of the mounting flange 321 facing the wall 90 .

It will be apparent to those skilled in the art that the invention is not limited to the details of the above-described exemplary embodiments, but that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Accordingly, the embodiments should be regarded in all points of view as exemplary and not restrictive, the scope of the invention being defined by the appended claims rather than the foregoing description, and it is therefore intended that the scope of the invention be defined by the appended claims rather than by the foregoing description. All changes within the meaning and range of equivalents of the elements are embraced in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (8)

1. a kind of smoke evacuation tube assembly for gas-fired equipment, it at least includes the first smoke exhaust pipe and the second smoke exhaust pipe, and described first It is equipped with electric conductor on smoke exhaust pipe and the second smoke exhaust pipe；It is characterized in that: this smoke evacuation tube assembly also includes pipe bindiny mechanism, and it is even It is connected on and to realize the solid mechanical of the first and second smoke exhaust pipes between the first smoke exhaust pipe and the second smoke exhaust pipe and connect, realize the simultaneously One and second smoke exhaust pipe electric conductor electric connection；Described pipe bindiny mechanism includes fixation and is set in the first and second smoke exhaust pipes Adjacent end portion connection ring, and be arranged in connection ring to be electrically connected with the conduction of the electric conductor of the first and second smoke exhaust pipes Terminal；Wire seat is further respectively had, wire seat is provided with and is electrically connected with corresponding electric conductor on described first and second smoke exhaust pipes Conducting strip；The two ends of described conducting terminal are contacted with the corresponding conducting strip of the first and second smoke exhaust pipes respectively.

2. according to claim 1 smoke evacuation tube assembly it is characterised in that: the electric conductor on each smoke exhaust pipe comprises two leads Line；Described conducting terminal insulation set is in connection ring.

3. according to claim 1 smoke evacuation tube assembly it is characterised in that: be additionally provided between described first and second smoke exhaust pipes Sealing member.

4. a kind of smoke evacuation tube assembly for gas-fired equipment, it at least includes the first smoke exhaust pipe and the second smoke exhaust pipe, and described first It is equipped with electric conductor on smoke exhaust pipe and the second smoke exhaust pipe；It is characterized in that: this smoke evacuation tube assembly also includes pipe bindiny mechanism, and it is even It is connected on and to realize the solid mechanical of the first and second smoke exhaust pipes between the first smoke exhaust pipe and the second smoke exhaust pipe and connect, realize the simultaneously One and second smoke exhaust pipe electric conductor electric connection；Described pipe bindiny mechanism includes fixation and is set in the first and second smoke exhaust pipes Adjacent end portion connection ring, and be arranged in connection ring to be electrically connected with the conduction of the electric conductor of the first and second smoke exhaust pipes Terminal；Described connection ring includes being provided separately and being fixedly connected with the end of the first and second smoke exhaust pipes respectively first Divide and Part II；The electric conductor with the first smoke exhaust pipe that described conducting terminal includes being arranged on described Part I is electrical The female terminal portion connecting, and it is arranged on the public affairs that on described Part II and the second smoke exhaust pipe electric conductor is electrically connected with Terminal part.

5. according to claim 4 smoke evacuation tube assembly it is characterised in that: the electric conductor on each smoke exhaust pipe comprises two leads Line；Described conducting terminal insulation set is in connection ring.

6. according to claim 4 smoke evacuation tube assembly it is characterised in that: be additionally provided between described first and second smoke exhaust pipes Sealing member.

7. a kind of smoke evacuation tube assembly for gas-fired equipment, it at least includes the first smoke exhaust pipe and the second smoke exhaust pipe, and described first It is equipped with electric conductor on smoke exhaust pipe and the second smoke exhaust pipe；It is characterized in that: this smoke evacuation tube assembly also includes pipe bindiny mechanism, and it is even It is connected on and to realize the solid mechanical of the first and second smoke exhaust pipes between the first smoke exhaust pipe and the second smoke exhaust pipe and connect, realize the simultaneously One and second smoke exhaust pipe electric conductor electric connection；Described pipe bindiny mechanism includes at least two retainers, each retainer It is fixedly connected the adjacent end portion of the first and second smoke exhaust pipes；Electric conductor on each smoke exhaust pipe only comprises a wire, and described two Individual retainer has the design of differentiation.

8. according to claim 7 smoke evacuation tube assembly it is characterised in that: be additionally provided between described first and second smoke exhaust pipes Sealing member.