CN220981593U - Gas discharge device and gas water heater - Google Patents

Abstract

The utility model provides a gas discharge device and a gas water heater, and relates to the technical field of exhaust equipment; the exhaust structure is also provided with a communication port, and the communication port is positioned at the upstream of the exhaust port when the exhaust flow of the gas is upward; the buffer structure is used for forming a buffer cavity, and the buffer cavity is communicated with the exhaust channel through the communication port. According to the utility model, the vibration frequency and strength of the waste gas can be weakened through the buffer cavity of the buffer structure, so that the problem of howling resonance caused by the transmission of the vibration of the waste gas to the exhaust structure is prevented, and the use experience of a user is improved. And through buffer structure's buffering effect, the regional scope of ignition has been increased for the fan also can not lead to exhaust structure to produce the problem of resonance of howling under great or less rotational speed, has reduced gas heater's debugging degree of difficulty, has improved gas heater's reliability.

Description

Gas discharge device and gas water heater

Technical Field

The utility model relates to the technical field of exhaust equipment, in particular to a gas discharge device and a gas water heater.

Background

In the use process of the gas water heater, the gas water heater can input air into the combustion structure through the air inlet structure, and waste gas generated by combustion can be discharged through the exhaust structure. When the gas water heater adopts a thick and thin combustion system, the optimal ignition area of the gas burner is narrower, and in the process of utilizing the fan to enter gas, especially when the rotating speed of the fan exceeds or is lower than the optimal ignition area of the gas water heater, the problem of howling resonance is easily generated when exhaust gas is discharged through an exhaust structure, so that the noise problem is generated, and the use experience of a user is reduced.

Therefore, how to enlarge the ignition area of the gas water heater to reduce the occurrence of the howling problem becomes a technical problem to be solved urgently.

Disclosure of utility model

In order to overcome the above-mentioned drawbacks of the prior art, an embodiment of the present utility model provides a gas exhaust device and a gas water heater, which are used for expanding a ignition area of a gas burner to reduce the occurrence of howling resonance.

The above object of the present utility model can be achieved by the following technical scheme, and the present utility model provides a gas exhaust device, comprising:

An exhaust structure including an exhaust passage and an exhaust port, the gas in the exhaust passage being capable of being exhausted from the exhaust port; the exhaust structure is also provided with a communication port, and the communication port is positioned upstream of the exhaust port in the upward direction of the exhaust flow of the gas;

The buffer structure is in sealing connection with the exhaust structure so as to seal the communication port, the buffer structure is used for forming a buffer cavity, and the buffer cavity is communicated with the exhaust channel through the communication port.

In a preferred embodiment of the present utility model, the cushioning structure includes a resilient member, which forms the cushioning cavity.

In a preferred embodiment of the present utility model, the gas exhaust apparatus further includes a mounting structure disposed on the exhaust structure, and the buffer structure is hermetically connected to the exhaust structure through the mounting structure.

In a preferred embodiment of the present utility model, the mounting structure includes a mounting seat, the mounting seat is disposed at the periphery of the communication port, and the elastic element is connected with the mounting seat.

In a preferred embodiment of the present utility model, the buffer structure further includes a cover body, the cover body is covered on the elastic element, the cover body is connected with the mounting seat, and the cover body and at least part of the elastic element are arranged at intervals to form an adjusting gap.

In a preferred embodiment of the present utility model, the cover body is used for pressing the elastic element to the mounting seat to form a sealing structure.

In a preferred embodiment of the utility model, the cover is detachably connected to the elastic element.

In a preferred embodiment of the utility model, the elastic element is configured in a cylindrical shape, and a side edge of the elastic element is provided with a first pressing edge, and the first pressing edge is provided with a protrusion;

The cover body is configured to be cylindrical, the side of the cover body is provided with the second blank holder, the second blank holder is equipped with the recess, protruding can the joint in the recess, the second blank holder can with first blank holder crimping forms seal structure on the mount pad, and the second blank holder with mount pad detachably connects.

In a preferred embodiment of the present utility model, at least one vent hole is provided on the cover body, and the vent hole communicates the adjusting gap with the outside air.

In a preferred embodiment of the present utility model, the number of the communication ports is one or more, and a ratio of a total area of the communication ports to a cross-sectional area of the exhaust structure is greater than a predetermined value.

In a preferred embodiment of the present utility model, the predetermined value is 1/54.

In a preferred embodiment of the present utility model, the exhaust structure further includes an exhaust seat and a connection pipe, the exhaust passage penetrates through the exhaust seat and the connection pipe, the exhaust port is located at a distal end of the connection pipe in a radial direction, and the communication port is disposed on a side wall of the connection pipe.

In a preferred embodiment of the present utility model, the elastic element includes a rubber coating.

The utility model also provides a gas water heater, which comprises a burner and the gas discharge device, wherein the gas discharge device is arranged on the shell of the gas water heater and is used for discharging flue gas generated by the combustion of the burner.

The technical scheme of the utility model has the following remarkable beneficial effects:

When the gas exhaust device is used, the exhaust channel of the exhaust structure is connected with the flue gas channel of the gas water heater, so that exhaust gas generated by combustion of the gas water heater can be exhausted through the exhaust port of the exhaust structure. Through set up buffer structure on exhaust structure, buffer structure can be through the communication port with exhaust structure sealing meet for buffer structure's buffer chamber is linked together with the exhaust passage. When the exhaust structure is used for exhausting, the vibration of the exhaust gas can be transmitted to the exhaust structure through the exhaust channel, and the buffer cavity can absorb the vibration frequency and intensity of the exhaust gas through deformation, so that the problem that howling resonance is caused due to the fact that the vibration of the exhaust gas is transmitted to the exhaust structure is prevented, and the use experience of a user is improved. And through buffer structure's buffering effect, increased the regional scope of ignition for the fan also can not lead to exhaust structure to produce the problem of resonance of whistling under great rotational speed, reduced the debugging degree of difficulty of gas heater, improved gas heater's reliability.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, proportional sizes, and the like of the respective components in the drawings are merely illustrative for aiding in understanding the present utility model, and are not particularly limited. Those skilled in the art with access to the teachings of the present utility model can select a variety of possible shapes and scale sizes to practice the present utility model as the case may be.

FIG. 1 is a schematic perspective view of an embodiment of a gas evacuation device according to the present utility model;

FIG. 2 is a schematic side cross-sectional view of one embodiment of a gas evacuation device according to the present disclosure;

FIG. 3 is a schematic side cross-sectional view of one embodiment of a cover according to the present utility model;

FIG. 4 is a schematic perspective view of an embodiment of a cover according to the present utility model;

FIG. 5 is a schematic perspective view of another embodiment of the cover according to the present utility model;

FIG. 6 is a cross-sectional view of a mounting structure of the first and second crimping edges of the present utility model;

FIG. 7 is a schematic perspective view of an embodiment of a gas water heater according to the present utility model;

FIG. 8 is a schematic perspective view of another embodiment of a gas water heater according to the present utility model;

Fig. 9 is a schematic perspective view of another embodiment of the gas water heater according to the present utility model.

Reference numerals of the above drawings:

1. an exhaust structure; 11. An exhaust passage;

2. A mounting structure; 21. A mounting base;

3. A buffer structure; 31. a buffer chamber; 32. an elastic element; 321. a first blank holder; 322. a protrusion;

4. A communication port;

5. A connecting pipe; 51. an exhaust seat;

6. a cover body; 61. a second blank holder; 62. a groove; 63. an exhaust hole;

7. a gas water heater.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Embodiment one

Referring to fig. 1 and 2 in combination, a gas exhaust apparatus is provided in an embodiment of the present utility model, the gas exhaust apparatus at least includes an exhaust structure 1 and a buffer structure 3, the exhaust structure 1 includes an exhaust channel 11 and an exhaust port, and gas in the exhaust channel 11 can be exhausted from the exhaust port; the exhaust structure 1 is also provided with a communication port 4, the communication port 4 being located upstream of the exhaust port in the upward direction of the exhaust flow of the gas; the buffer structure 3 is in sealing connection with the exhaust structure 1 to seal the communication port 4, the buffer structure 3 is used for forming a buffer cavity 31, and the buffer cavity 31 is communicated with the exhaust channel 11 through the communication port 4.

When the gas discharge device is used, the exhaust channel 11 of the exhaust structure 1 is connected with the flue gas channel of the gas water heater 7, so that the exhaust gas generated by the combustion of the gas water heater 7 can be discharged through the exhaust port of the exhaust structure 1.

By arranging the buffer structure 3 on the exhaust structure 1, the buffer structure 3 can be connected with the exhaust structure 1 in a sealing way through the communication port 4, so that the buffer cavity 31 of the buffer structure 3 is communicated with the exhaust channel 11. When the exhaust structure 1 is used for exhausting, the vibration of the exhaust gas can be transmitted to the exhaust structure 1 through the exhaust channel 11, and the buffer cavity 31 can absorb the vibration frequency and the intensity of the exhaust gas through deformation, so that the problem that the vibration of the exhaust gas is transmitted to the exhaust structure 1 to cause howling resonance is prevented, and the use experience of a user is improved.

In addition, through the vibration damping effect of the buffer structure 3, the range of the ignition area is enlarged, so that the problem that the exhaust structure 1 generates howling resonance is avoided under the condition of larger rotating speed of the fan, the debugging difficulty of the gas water heater 7 is reduced, and the reliability of the gas water heater 7 is improved.

In an embodiment of the utility model, as in the example shown in fig. 2 and 6, the cushioning structure 3 comprises an elastic element 32, the elastic element 32 forming the cushioning cavity 31.

Through setting up buffer chamber 31 in elastic component 32, buffer chamber 31 can produce deformation under the atmospheric pressure effect, and then utilize buffer chamber 31's deformation effect can absorb the vibration of waste gas to reduce exhaust structure 1 and take place the risk of whistle resonance.

In a specific embodiment, the elastic element 32 is formed by an elastic material, and the buffer chamber 31 can be formed in the elastic element 32. The particular material of the resilient member 32, such as a rubber material, may be adjusted by the designer according to the needs of the application, and is not particularly limited herein.

In the embodiment of the utility model, the gas discharge device further comprises a mounting structure 2, the mounting structure 2 is arranged on the gas discharge structure 1, and the buffer structure 3 is in sealing connection with the gas discharge structure 1 through the mounting structure 2.

By arranging the mounting structure 2 on the exhaust structure 1, the buffer structure 3 can be quickly and sealingly connected with the exhaust structure 1 through the mounting structure 2, and the buffer cavity 31 of the buffer structure 3 is communicated with the exhaust channel 11.

In a possible embodiment of the present utility model, as shown in the embodiment of fig. 2 and 3, the mounting structure 2 includes a mounting seat 21, the mounting seat 21 is disposed at the periphery of the communication port 4, and the elastic member 32 is connected to the mounting seat 21.

By arranging the mounting seat 21 on the side wall of the exhaust structure 1, the buffer structure 3 is convenient to directly mount on the exhaust structure 1, and the mounting efficiency is better. The specific configuration of the mounting base 21 can be adjusted by the designer according to the use requirements, and is not particularly limited herein.

In the embodiment of the present utility model, as shown in the embodiment of fig. 3, 4 and 8, the buffer structure 3 further includes a cover 6, where the cover 6 is covered on the elastic element 32, the cover 6 is connected to the mounting seat 21, and the cover 6 and at least part of the elastic element 32 are spaced apart to form an adjustment gap.

The deformation amount of the elastic element 32 is limited by the cover body 6 through adjusting the gap, when the exhaust structure 1 is used for exhausting, the elastic element 32 can compress and adjust the air in the gap to generate deformation, and then the elastic element 32 can absorb the vibration frequency and the intensity of the exhaust gas through deformation so as to prevent the problem of howling resonance.

In one embodiment, the cover 6 is configured to press the resilient member 32 against the mounting base 21 to form a seal. By covering the cover body 6 on the elastic element 32, one side of the cover body 6 can protect the elastic element 32, so that the risk of damage to the elastic element 32 due to the influence of external force is reduced; the other side face guard body 6 and mount pad 21 sealing connection for the cover body 6 can play sealed effect, even the elastic component 32 takes place the damage, waste gas also can not leak, has improved the safety in utilization.

Further, the cover 6 is detachably connected with the elastic member 32. Through making cover 6 and elastic element 32 detachably connect, be convenient for carry out location installation and dismantlement change to elastic element 32, improved location effect and change efficiency.

In the embodiment of the present utility model, the elastic element 32 is configured in a cylindrical shape, and a first pressing edge 321 is provided on a side edge of the elastic element 32, and a protrusion 322 is provided on the first pressing edge 321.

Specifically, the cover 6 is disposed in the radial direction of the exhaust passage 11 and covers the elastic member 32. Of course, the designer may adjust the specific configuration and arrangement of the cover 6 according to the use needs, and is not particularly limited herein.

Further, the cover 6 is configured in a cylindrical shape, the side edge of the cover 6 is provided with a second pressing edge 61, the second pressing edge 61 is provided with a groove 62, the protrusion 322 can be clamped in the groove 62, the second pressing edge 61 can press the first pressing edge 321 onto the mounting seat 21 to form a sealing structure, and the second pressing edge 61 is detachably connected with the mounting seat 21.

The protrusion 322 is disposed around the first pressing edge 321, and disposed on an end surface of the first pressing edge 321 facing away from the mounting seat 21. And the groove 62 is provided around the second pressing edge 61 and on the side end surface of the second pressing edge 61 facing the mounting seat 21.

The positioning and mounting operation of the elastic member 32 and the cover 6 is achieved by the projection 322 being engaged in the recess 62. And, can also play sealed effect after protruding 322 and recess 62 joint, avoid the damage of elastic component 32 back, waste gas to leak along the clearance between protruding 322 and the recess 62.

Further, a plurality of bolt holes are formed in the second pressing edge 61 to form a flange structure, a plurality of bolt holes are correspondingly formed in the mounting seat 21, and the second pressing edge 61 and the mounting seat 21 can be connected through bolts, so that better mounting efficiency is achieved.

The second crimp 61 can also crimp the first crimp 321 to the mount 21, thereby providing a seal and preventing exhaust gas from leaking along the gap between the first crimp 321 and the mount 21.

Of course, in other embodiments, the designer may adjust the connection manner between the second pressing edge 61 and the mounting seat 21 according to the use requirement, for example, the second pressing edge 61 and the mounting seat 21 are clamped by the clamping structure, which is not limited herein.

In the embodiment of the present utility model, as in the example shown in fig. 5 and 9, at least one vent hole 63 is provided in the cover 6, and the vent hole 63 communicates the adjustment gap with the outside air. Preferably, the external air is atmospheric air.

By providing the vent hole 63 on the cover 6, the adjustment gap and the external space can be communicated by using the vent hole 63, thereby reducing the resistance when the elastic member 32 is deformed.

The number and positions of the exhaust holes 63 may be adjusted by a designer according to the use requirement, and are not particularly limited herein. Preferably, a plurality of exhaust holes 63 are provided, and the plurality of exhaust holes 63 are provided at the other end of the cover 6 with respect to the second flange 61.

In a possible embodiment of the utility model, the number of communication ports 4 is one, and the ratio of the total area of the communication ports 4 to the cross-sectional area of the exhaust structure 1 is greater than a predetermined value.

Through the ratio of the total area of the communication port 4 and the cross-sectional area of the first air passage of the exhaust structure 1, the overflow capacity of the communication port 4 is conveniently controlled to adjust the buffering capacity of the buffering cavity 31, so that the buffering cavity 31 can better absorb the vibration of the exhaust gas to prevent the exhaust structure 1 from generating the howling resonance under the influence of the exhaust gas.

In another possible embodiment of the utility model, the number of communication ports 4 is plural, and the ratio of the total area of the communication ports 4 to the cross-sectional area of the exhaust structure 1 is greater than a predetermined value. Wherein the plurality includes two and more than two numbers.

In a specific embodiment, the plurality of communication ports 4 are identical in size and are arranged at intervals. By controlling the ratio of the total area of the plurality of communication ports 4 to the cross-sectional area of the first air passage of the exhaust structure 1, it is convenient to control the flow capacity of each communication port 4 to adjust the buffering capacity of the buffer chamber 31.

In another embodiment, at least one of the communication ports 4 is of a different size than the rest.

The designer can adjust the size, the number and the arrangement positions of the communication ports 4 according to the use requirement, and the present invention is not particularly limited.

Preferably, the predetermined value is 1/54. By making the ratio of the total area of the communication ports 4 to the cross-sectional area of the first air passage of the exhaust structure 1 larger than 1/54, the overcurrent capacity of the communication ports 4 is ensured, so that the buffer chamber 31 can absorb the vibration of the exhaust gas better.

Of course, in other embodiments, the designer may adjust the magnitude of the predetermined value according to the use requirement, and the specific numerical values are not limited herein.

In the embodiment of the present utility model, the exhaust structure 1 further includes an exhaust seat 51 and a connection pipe 5, the exhaust passage 11 penetrates the exhaust seat 51 and the connection pipe 5, the exhaust port is located at the end of the connection pipe 5 in the radial direction, and the communication port 4 is provided on the side wall of the connection pipe 5.

In one embodiment, the exhaust seat 51 is connected to one end of the connection pipe 5, and the connection pipe 5 is connected to the exhaust structure 1 through the exhaust seat 51, so that the exhaust passage 11 penetrates the exhaust seat 51 and the connection pipe 5.

Can form external structure through exhaust seat 51 and connecting pipe 5, through adopting external connecting pipe 5 as buffer structure 3's installation basis, avoid destroying exhaust structure 1's integrality, also be convenient for reform transform current exhaust structure 1, have better suitability.

And, set up mount pad 21 on the lateral wall of connecting pipe 5, be convenient for install buffer structure 3 on connecting pipe 5 fast, have better installation effectiveness.

Further, the connection pipe 5 is detachably connected to the exhaust structure 1 through the exhaust seat 51. By detachably connecting the connection pipe 5 with the exhaust structure 1, the connection pipe 5 is convenient to install and detach, and the installation and maintenance efficiency is improved.

In the embodiment of the present utility model, as in the examples shown in fig. 1, 2 and 6, the elastic member 32 includes a rubber coating.

When the exhaust structure 1 performs exhaust, the rubber coating film expands to form a cylindrical shape under the influence of the exhaust gas pressure. When the exhaust structure 1 does not exhaust, the rubber coating film is contracted to form a corrugated plate shape under its own elasticity, and the corrugated plate-shaped rubber coating film has better deformability.

By using a rubber material, the rubber coating film is made to have a good deformability, so that the vibration of the exhaust gas can be sufficiently absorbed to prevent the problem of squeaking resonance of the exhaust structure 1.

Of course, the designer may also use other materials to form the resilient member 32, such as plastic materials, etc., without limitation.

In other possible embodiments, the rubber coating may also be directly configured in a cylindrical shape, without particular limitation.

The designer can adjust the installation mode between the exhaust seat 51 and the exhaust structure 1 according to the use requirement, for example, the exhaust seat 51 and the exhaust structure 1 are connected by adopting threads, or the exhaust seat 51 and the exhaust structure 1 are detachably clamped by adopting a clamping structure, which is not particularly limited herein.

Of course, in other embodiments, the exhaust seat 51 and the exhaust structure 1 may be fixedly connected, for example, the exhaust seat 51 and the exhaust structure 1 may be welded, or the exhaust seat 51 and the exhaust structure 1 may be bonded by glue, which is not limited herein.

Second embodiment

Referring to fig. 7, 8 and 9 in combination, a gas water heater 7 is provided in an embodiment of the present utility model, where the gas water heater 7 includes a burner and the gas exhaust device is disposed on a housing of the gas water heater 7, and is used for exhausting flue gas generated by the combustion of the burner.

The specific structure, working principle and beneficial effects of the gas exhaust device are the same as those described in the first embodiment, and are not described in detail herein. This gas heater 7 can be when exhaust structure 1 is discharged through the gaseous exhaust device in the application embodiment one, through the vibration frequency and the intensity of buffer chamber 31 absorption waste gas, prevent the vibration transfer of waste gas to exhaust structure 1 on and the problem of initiation resonance of whistling for the fan also can not lead to exhaust structure 1 to produce the problem of resonance of whistling under great or less rotational speed, thereby increased the regional scope of ignition, reduced the debugging degree of difficulty of gas heater 7, improved the reliability of gas heater 7.

For example, when the initial optimal ignition region of the gas water heater 7 is 3400r/min to 3800r/min, the optimal ignition region of the gas water heater 7 can be adjusted to 3000r/min to 4000r/min by utilizing the gas discharge device, so that the ignition region of the gas water heater 7 is enlarged, the debugging difficulty of the gas water heater 7 is reduced, the occurrence of howling resonance problem is reduced, and the reliability of the gas water heater 7 is improved.

All articles and references, including patent applications and publications, disclosed herein are incorporated by reference for all purposes. The term "consisting essentially of …" describing a combination shall include the identified element, ingredient, component or step as well as other elements, ingredients, components or steps that do not substantially affect the essential novel features of the combination. The use of the terms "comprises" or "comprising" to describe combinations of elements, components, or steps herein also contemplates embodiments consisting essentially of such elements, components, or steps. By using the term "may" herein, it is intended that any attribute described as "may" be included is optional. Multiple elements, components, parts or steps can be provided by a single integrated element, component, part or step. Alternatively, a single integrated element, component, part or step may be divided into separate plural elements, components, parts or steps. The disclosure of "a" or "an" to describe an element, component, section or step is not intended to exclude other elements, components, sections or steps.

In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described by differences from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other. The above embodiments are provided to illustrate the technical concept and features of the present utility model and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same, and are not intended to limit the scope of the present utility model. All equivalent changes or modifications made in accordance with the spirit of the present utility model should be construed to be included in the scope of the present utility model.

Claims (14)

1. A gas discharge device, comprising:

An exhaust structure including an exhaust passage and an exhaust port, the gas in the exhaust passage being capable of being exhausted from the exhaust port; the exhaust structure is also provided with a communication port, and the communication port is positioned upstream of the exhaust port in the upward direction of the exhaust flow of the gas;

The buffer structure is in sealing connection with the exhaust structure so as to seal the communication port, the buffer structure is used for forming a buffer cavity, and the buffer cavity is communicated with the exhaust channel through the communication port.

2. The gas discharge device of claim 1, wherein the cushioning structure comprises a resilient element that forms the cushioning cavity.

3. The gas discharge device according to claim 2, further comprising a mounting structure provided on the exhaust structure, the buffer structure being sealingly connected to the exhaust structure by the mounting structure.

4. A gas discharge device according to claim 3, wherein the mounting structure includes a mount provided at the periphery of the communication port, and the elastic member is connected to the mount.

5. The gas discharge device of claim 4, wherein the cushioning structure further comprises a cover over the resilient member, the cover being coupled to the mounting base, the cover being spaced from at least a portion of the resilient member to form an adjustment gap.

6. The gas discharge device of claim 5, wherein the cap body presses the resilient member against the mount to form a seal.

7. The gas discharge device of claim 5, wherein the cover is detachably connected to the elastic member.

8. The gas discharge device according to claim 7, wherein the elastic member is configured in a cylindrical shape, and a side edge of the elastic member is provided with a first pressing edge provided with a protrusion;

The cover body is configured to be cylindrical, the side of the cover body is provided with the second blank holder, the second blank holder is equipped with the recess, protruding can the joint in the recess, the second blank holder can with first blank holder crimping forms seal structure on the mount pad, and the second blank holder with mount pad detachably connects.

9. The gas discharge device according to claim 5, wherein at least one gas discharge hole is provided in the cover body, and the gas discharge hole communicates the adjustment gap with the outside air.

10. The gas discharge device according to claim 1, wherein the number of the communication ports is one or more, and a ratio of a total area of the communication ports to a cross-sectional area of the exhaust structure is greater than a predetermined value.

11. The gas discharge device according to claim 10, wherein the predetermined value is 1/54.

12. The gas discharge device according to claim 1, wherein the gas discharge structure further comprises a gas discharge seat and a connection pipe, the gas discharge passage penetrates the gas discharge seat and the connection pipe, the gas discharge port is located at a distal end in a radial direction of the connection pipe, and the communication port is provided on a side wall of the connection pipe.

13. The gas discharge device according to claim 2, wherein the elastic member comprises a rubber coating.

14. A gas water heater comprising a burner and a gas discharge device according to any one of claims 1 to 13, provided on a housing of the gas water heater for discharging flue gases produced by combustion of the burner.