CN215983247U - Air inlet device and gas water heater with same - Google Patents
Air inlet device and gas water heater with same Download PDFInfo
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- CN215983247U CN215983247U CN202121326763.7U CN202121326763U CN215983247U CN 215983247 U CN215983247 U CN 215983247U CN 202121326763 U CN202121326763 U CN 202121326763U CN 215983247 U CN215983247 U CN 215983247U
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- air inlet
- inner cover
- air intake
- side wall
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 239000000779 smoke Substances 0.000 claims abstract description 66
- 238000002485 combustion reaction Methods 0.000 claims abstract description 15
- 239000007789 gas Substances 0.000 claims abstract description 13
- 239000003517 fume Substances 0.000 claims abstract description 9
- 238000007599 discharging Methods 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 17
- 239000003546 flue gas Substances 0.000 abstract description 17
- 238000001816 cooling Methods 0.000 abstract description 10
- 239000002918 waste heat Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 11
- 230000030279 gene silencing Effects 0.000 description 7
- 230000003139 buffering effect Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001902 propagating effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 101150114468 TUB1 gene Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Housings, Intake/Discharge, And Installation Of Fluid Heaters (AREA)
Abstract
The utility model discloses an air inlet device and a gas water heater with the same, wherein the air inlet device comprises: a smoke exhaust pipe; the air inlet outer cover is sleeved on the outer surface of the smoke exhaust pipe, an annular air cavity is formed between the air inlet outer cover and the smoke exhaust pipe, and a plurality of air inlet parts are arranged on the side wall or the top of the air inlet outer cover; the inner cover, the inner cover sets up in annular air cavity to the inner cover separates annular air cavity for air inlet runner and air-out runner, and air inlet runner intercommunication air inlet portion, air-out runner are located air inlet runner's below or are located air inlet runner and discharge fume between the pipe, are equipped with a plurality of bloops including the lateral wall of cover, and air inlet runner is linked together through the bloop with the air-out runner, and the air-out runner has air-out portion. The utility model has the noise reduction function, preheats cold air through the waste heat of the flue gas, improves the combustion performance of the water heater, and carries out air cooling and cooling on externally discharged high-temperature flue gas.
Description
Technical Field
The utility model relates to the technical field of water heaters, in particular to an air inlet device and a gas water heater with the same.
Background
In addition to the constant temperature performance of the gas water heater, the running noise of the product becomes one of the key factors influencing the use comfort, so that all large water heater manufacturers take silence as an important research direction. The existing research focuses on operating noise around an internal core system, but the system simultaneously realizes the noise reduction function of an air inlet channel and the utilization of smoke waste heat, and no ideal structural scheme is output.
Disclosure of Invention
The utility model aims to solve at least one of the problems in the prior art to a certain extent, and provides an air inlet device which has a noise reduction function, and meanwhile, the air inlet device preheats cold air through waste heat of flue gas, improves the combustion performance of a water heater, and performs air cooling on externally-discharged high-temperature flue gas.
The utility model also provides a gas water heater with the air inlet device.
According to the air inlet device that above-mentioned provided, it realizes through following technical scheme:
an air intake device, comprising: a smoke exhaust pipe; the air inlet outer cover is sleeved on the outer surface of the smoke exhaust pipe, an annular air cavity is formed between the air inlet outer cover and the smoke exhaust pipe, and a plurality of air inlet parts are arranged on the side wall or the top of the air inlet outer cover; the inner cover, the inner cover set up in annular air cavity, and the inner cover will annular air cavity separates for air inlet runner and air-out runner, the air inlet runner intercommunication the air inlet portion, the air-out runner is located the below of air inlet runner or be located the air inlet runner with between the pipe of discharging fume be equipped with a plurality of bloops on the inner cover, the air inlet runner with the air-out runner passes through the bloop is linked together, the air-out runner has air-out portion.
In some embodiments, the top of the inner cover is lower than the top of the air inlet outer cover, the air inlet portion is an air inlet slot or an air inlet hole, all the air inlet slots or all the air inlet holes are arranged at the upper end of the side wall of the air inlet outer cover at intervals along the circumferential direction, and each air inlet slot or each air inlet hole is located above the top of the inner cover.
In some embodiments, the air outlet channel is located below the air inlet channel, and all the silencing holes are uniformly arranged at the top of the inner cover at intervals along the circumferential direction;
or the air outlet channel is positioned between the air inlet channel and the smoke exhaust pipe, and all the sound eliminating holes are uniformly distributed on the side wall of the inner cover at intervals in the height direction and the circumferential direction.
In some embodiments, the air inlet outer cover and the bottom of the inner cover are both provided with openings, the lower end of the side wall of the inner cover is provided with a boss extending outwards, the boss abuts against the lower end of the inner side wall of the air inlet outer cover, the silencing hole is formed in the side wall of the inner cover, and the air outlet portion is formed by the bottom openings of the inner cover.
In some embodiments, the boss includes a transverse section and a vertical section that are connected to each other in an inverted "L" shape, a radially inner side of the transverse section is integrally formed with a lower end of the side wall of the inner cover, the vertical section is formed by integrally bending a radially outer side of the transverse section downward, and the vertical section abuts against a lower end of the inner side wall of the air intake outer cover.
In some embodiments, the air inlet outer cover and the bottom of the inner cover are both provided with openings, the lower end of the side wall of the air inlet outer cover is provided with an inward extending inward flanging, the inward flanging is abutted against the lower end face of the side wall of the inner cover, the silencing hole is formed in the side wall of the inner cover, and the air outlet part is formed by the inner cover and the bottom openings of the air inlet outer cover.
In some embodiments, the air inlet outer cover and the bottom of the inner cover are both provided with openings, the lower end of the side wall of the air inlet outer cover is provided with an inward flange extending inwards, the lower end of the side wall of the inner cover is provided with an outward folded edge extending outwards, the outward folded edge is abutted to the bottom surface of the inward flange, the silencing hole is formed in the side wall of the inner cover, and the air outlet part is formed by the bottom opening of the inner cover.
In some embodiments, the air inlet outer cover and the bottom of inner cover all have the opening, the inboard or inside wall butt in top of inner cover the lateral wall of tub of discharging fume to the lateral wall butt of inner cover the lateral wall middle part of air inlet outer cover, the bloop set up in the top of inner cover, the play wind portion by the bottom opening of air inlet outer cover constitutes.
In some embodiments, a downward extending flange is provided on the top of the air intake outer cover and/or the top of the inner cover, and the flange abuts against the outer side wall of the smoke exhaust pipe.
According to the gas heater who provides above-mentioned, it realizes through following technical scheme:
a gas water heater comprising: the water heater comprises a water heater shell, wherein the top of the water heater shell is provided with an air inlet; a combustion system disposed within the water heater housing; the smoke exhausting structure is arranged at the air inlet and is provided with a smoke exhausting channel; the air inlet device is arranged at the top of the water heater shell and enables the smoke exhaust pipe to be communicated with the smoke exhaust channel, and the air outlet channel is communicated with the interior of the water heater shell through the air inlet.
In some embodiments, at least a portion of the smoke evacuation channel is embedded within the smoke evacuation tube with the inner sidewall of the smoke evacuation tube abutting the outer sidewall of the smoke evacuation channel.
Compared with the prior art, the utility model at least comprises the following beneficial effects:
1. according to the air inlet device, the air inlet flow channel is connected with external cold air through the air inlet part, the air outlet flow channel is designed below the air inlet flow channel or between the air inlet flow channel and the smoke exhaust pipe, the air inlet flow channel is communicated with the air outlet flow channel through the sound deadening holes, and the air outlet part of the air outlet flow channel is communicated with the air inlet at the top of the shell of the water heater, so that the cold air flowing through the air outlet flow channel can exchange heat with high-temperature smoke flowing through the smoke exhaust pipe, air required by preheating combustion is realized, the combustion performance of the water heater is favorably improved, and air cooling of the externally-discharged high-temperature smoke is realized;
2. through the overall arrangement of air inlet runner, bloop and air-out runner, can introduce the effect that plays the buffering to cold air on the one hand, avoid the air current noise of admitting air too big, on the other hand can the inside noise of separation water heater casing toward propagating outward to the function of making an uproar falls in the realization.
Drawings
FIG. 1 is a sectional view of an air intake device in embodiment 1 of the present invention;
FIG. 2 is an exploded view of the air intake device in embodiment 1 of the present invention;
FIG. 3 is a schematic structural view of a gas water heater according to embodiment 1 of the present invention;
FIG. 4 is a sectional view of an air intake device in embodiment 2 of the present invention;
fig. 5 is a sectional view of an air intake device in embodiment 4 of the present invention.
Detailed Description
The present invention is illustrated by the following examples, but the present invention is not limited to these examples. Modifications to the embodiments of the utility model or equivalent substitutions of parts of technical features without departing from the spirit of the utility model are intended to be covered by the scope of the claims of the utility model.
Example 1
As shown in fig. 1-2, the present embodiment provides an air intake device, which includes a smoke exhaust pipe 1, an air intake outer cover 2 and an inner cover 3, wherein the smoke exhaust pipe 1 is used for communicating with a smoke exhaust channel of a water heater. The air inlet outer cover 2 is sleeved on the outer surface of the smoke exhaust pipe 1, an annular air cavity is formed between the air inlet outer cover 2 and the smoke exhaust pipe 1, and a plurality of air inlet portions 201 are arranged on the side wall or the top of the air inlet outer cover 2. The inner cover 3 is arranged in the annular air cavity, the inner cover 3 divides the annular air cavity into an air inlet channel 41 and an air outlet channel 42, the air inlet channel 41 is communicated with the air inlet portion 201, and the air outlet channel 42 is positioned below the air inlet channel 41 or between the air inlet channel 41 and the smoke exhaust pipe 1. Be equipped with a plurality of bloops 301 on inner cover 3, air inlet runner 41 is linked together through bloops 301 with air outlet runner 42, air outlet runner 42 has air-out portion (not shown in the figure), air-out portion and the air intake at water heater casing top of air-out runner 42 are linked together, and like this, through air inlet runner 41, bloop 301 and air-out runner 42's overall arrangement, can play the effect of buffering to cold air introduction on the one hand, it is too big to avoid the air current noise, but on the other hand the inside noise of separation water heater casing is toward outer propagation, thereby the function of making an uproar falls in the realization.
When a fan in the water heater operates, high-temperature flue gas generated by combustion of the water heater is discharged from the smoke exhaust channel and the smoke exhaust pipe 1 in sequence, and can exchange heat with the smoke exhaust pipe 1 to heat the smoke exhaust pipe 1; meanwhile, because the fan runs to make the inside negative pressure that forms of water heater, outside cold air flows into air inlet channel 41 from air inlet portion 201, flow along air inlet channel 41 earlier, then enter into air outlet channel 42 through bloop 301, carry out heat exchange with tub 1 of discharging fume and realize preheating, the air after preheating flows into the air intake at the water heater casing top that communicates air outlet portion from the air outlet portion of air outlet channel 42, supply to the inside of water heater casing at last, realized preheating the required supplementary air of burning on the one hand, in order to improve the thermal efficiency of burning, burning sufficiency and combustion stability, on the other hand can carry out the forced air cooling to the high temperature flue gas of external row.
It can be seen that, the air intake device of this embodiment, through connecting air intake runner 41 with the external cold air through air intake portion 201, air outlet runner 42 is designed below air intake runner 41 or between air intake runner 41 and smoke exhaust pipe 1, and air intake runner 41 is linked together through bloop 301 with air outlet runner 42, the air outlet portion of air outlet runner 42 is used for being linked together with the air intake at the top of the water heater casing, make the cold air flowing through air outlet runner 42 can carry out the heat exchange with the high temperature flue gas flowing through smoke exhaust pipe 1, realize the air required for preheating combustion, do benefit to promoting the combustion performance of water heater, realize simultaneously carrying out the air cooling to the high temperature flue gas of arranging outward. In addition, through the layout of the air inlet flow channel 41, the muffling hole 301 and the air outlet flow channel 42, on one hand, the cold air can be introduced to play a role in buffering, the phenomenon that the noise of the air inlet flow is too large is avoided, on the other hand, the noise inside the water heater shell can be prevented from being spread outwards, and therefore the noise reduction function is achieved.
Preferably, the top of the air intake outer cover 2 is higher than the top of the inner cover 3, and an annular buffer flow passage (not shown) is formed between the top of the inner cover 3 and the top of the air intake outer cover 2, the annular buffer flow passage constituting an upper portion of the air intake passage 41, and a lower portion of the air intake passage 41 is defined by the side wall of the inner cover 3 and the side wall of the air intake outer cover 2. The air inlet portion 201 is an air inlet slot or an air inlet hole, and this embodiment uses the air inlet portion 201 as an air inlet hole as an example, and all air inlet holes are arranged at the upper end of the side wall of the air inlet outer cover 2 along the circumferential direction and the height direction at intervals, and each air inlet hole is located above the top of the inner cover 3, so that each air inlet hole all enters air towards the annular buffer flow channel. Therefore, the external cold air flows into the annular buffer flow channel from the air inlet hole firstly, so that the effect of buffering the introduction of the cold air is achieved, the air is prevented from directly flowing to the silencing hole 301, the problem that the noise of the air inlet flow is too large is solved, and the cold air is preheated preliminarily with the high-temperature flue gas flowing through the smoke exhaust pipe 1 in the annular buffer flow channel; then, the air after preliminary preheating flows into the air outlet flow channel 42 from the lower part of the air inlet channel 41 and the silencing hole 301 in sequence, secondary preheating is carried out when the air flows through the air outlet flow channel 42, so that the preheating effect of cold air is further improved, secondary air cooling is carried out on high-temperature flue gas, and the air after secondary preheating is supplemented into the water heater shell through the air outlet part.
In this embodiment, air-out runner 42 is located between the lower part of air inlet runner 41 and the pipe of discharging fume 1, the even interval arrangement of direction of height and the circumference direction of whole bloop 301 edge inner cover 3, thus, do benefit to the increase total intake area, ensure the effect of admitting air, avoid influencing the air inlet effect because of the setting of inner cover 3, can ensure simultaneously that the distribution of admitting air is more even, realize all-round admitting air, promote the area of contact of air and the high temperature flue gas of the pipe of discharging fume 1 of flowing through, improve the air preheating effect.
Preferably, the bottom of the air intake outer cover 2 and the bottom of the inner cover 3 both have openings, the lower end of the side wall of the inner cover 3 is provided with a boss 302 extending outwards, the boss 302 abuts against the lower end of the inner side wall of the air intake outer cover 2, so that the lower end of the air intake flow passage 41 is closed, and air is prevented from directly entering the water heater shell from the lower end of the air intake flow passage 41. The air outlet part is formed by the bottom opening of the inner cover 3.
In this embodiment, the boss 302 includes the horizontal section and the vertical section that interconnect becomes "L" font, and the radial inboard of horizontal section and the lateral wall lower extreme integrated into one piece of inner cover 3 to the quick machine-shaping of horizontal section can prevent simultaneously that gas leakage from taking place in horizontal section and built-in 3's junction. Vertical section is bent downwards by the radial outside an organic whole of horizontal section and is formed to vertical section butt air inlet dustcoat 2's inside wall lower extreme, like this, does benefit to the quick machine-shaping of vertical section, ensures the joint strength of horizontal section and vertical section, has increased the area of contact between the lateral wall of boss 302 and air inlet dustcoat 2 simultaneously, does benefit to the gas tightness between promotion boss 302 and the 2 lateral walls of air inlet dustcoat.
Preferably, a downwardly extending flange 203 is provided on the top of the air intake outer cover 2 and/or the top of the inner cover 3, and the flange 203 abuts against the outer side wall of the smoke exhaust pipe 1. This embodiment uses the hem 203 that is equipped with downwardly extending at the top of air inlet dustcoat 2 as the example, like this, can increase the area of contact between air inlet dustcoat 2 and the pipe 1 lateral wall of discharging fume, promotes the sealing performance between the two.
As shown in fig. 3, the present embodiment further provides a gas water heater, which includes a water heater housing 5, a combustion system 6, a smoke exhausting structure 7, and the air intake device as described above, wherein an air inlet 501 is provided at the top of the water heater housing 5, and the air inlet 501 is communicated with the inside of the water heater housing 5. A combustion system 6 is disposed within the water heater housing 5. The smoke evacuation structure 7 is disposed at the air inlet 501, and the smoke evacuation structure 7 has a smoke evacuation channel 71. The air intake device is arranged at the top of the water heater shell 5, and the smoke exhaust pipe 1 is communicated with the smoke exhaust channel 71, and the air outlet channel 42 is communicated with the inside of the water heater shell 5 through the air inlet 501. From this, through the setting of hot blast blowpipe apparatus, make the water heater during operation, the inside fan operation of water heater, discharge high temperature flue gas to exhaust pipe 1 from smoke exhaust structure 7, and simultaneously, the inside negative pressure that forms of water heater, make outside cold air along air inlet portion 201, air inlet runner 41, bloop 301, air-out runner 42, air-out portion and air intake 501 flow, at this in-process, cold air can carry out the heat exchange with high temperature flue gas, make outer row high temperature flue gas carry out the forced air cooling, and the air is preheated the back and is supplemented to water heater casing 5 inside from air intake 501, in order to satisfy the required hot-air of burning, promote combustion stability, burning sufficiency and combustion thermal efficiency. In addition, air inlet device can also introduce the effect that plays the buffering to cold air, avoids the air current noise too big, can the inside noise of separation water heater casing simultaneously toward propagating outward to the function of making an uproar falls in the realization.
Preferably, at least part of the smoke exhaust channel 71 is embedded into the smoke exhaust pipe 1, and the inner side wall of the smoke exhaust pipe 1 is abutted to the outer side wall of the smoke exhaust channel 71, so that the sealing performance between the smoke exhaust pipe 1 and the smoke exhaust channel 71 is improved, and high-temperature smoke is prevented from entering the air outlet flow channel 42.
Example 2
As shown in fig. 4, the present embodiment is different from embodiment 1 in the connection relationship between the intake outer cover 2 and the muffler inner cover 3 and the formation manner of the air outlet portion. The lower end of the side wall of the air inlet outer cover 2 is provided with an inward extending inward turned edge 202, the turned edge 202 is connected with the lower end face of the side wall of the inner cover 3 in a butting manner, so that the lower end of the air inlet flow passage 41 is sealed, the air outlet part is formed by the air inlet outer cover 2 and the bottom opening of the noise reduction inner cover 3, and other parts are the same as those in embodiment 1.
Example 3
The present embodiment is different from embodiment 1 in that the connection relationship between the intake air outer cover 2 and the muffler inner cover 3 is different. The lower end of the side wall of the air inlet outer cover 2 is provided with an inward convex edge extending inwards, the lower end of the side wall of the inner cover 3 is provided with an outward folded edge extending outwards, and the outward folded edge is abutted against the bottom surface of the inward convex edge so as to seal the lower end of the air inlet flow passage 41, and other parts are the same as those of the embodiment 1.
Example 4
As shown in fig. 5, the present embodiment is different from embodiment 1 in the formation of the inner cover 3, the intake air flow passage 41, and the exhaust air flow passage 42. The inner cover 3 is arranged in the air inlet outer cover 2 and divides the annular air cavity into an upper part and a lower part, wherein the upper part forms an air inlet flow passage 41, and the lower part forms an air outlet flow passage 42 positioned below the air inlet flow passage 41. The upper end of the side wall of the air inlet outer cover 2 is provided with a plurality of air inlet parts 201, the air inlet parts 201 are communicated with the air inlet flow channel 41 and are positioned above the inner cover 3, the bottom of the air inlet outer cover 2 is provided with an opening, and the air outlet parts are formed by the bottom opening of the air inlet outer cover 2. The inboard or inside wall butt of top of inner cover 3 discharge fume the lateral wall of pipe 1 to the lateral wall butt air inlet outer cover 2's of inner cover 3 lateral wall middle part, inner cover 3 can be connected through connection methods such as bonding, welding or interference fit connection. All the muffling holes 301 are arranged at the top of the inner cover 3 at regular intervals in the circumferential direction.
When external cold air flows into the air inlet channel 41 from the air inlet part 201, the effect of buffering the introduction of the cold air is realized, the air is prevented from directly flowing to the silencing hole 301, the problem that the noise of the air inlet flow is too high is solved, and the cold air is firstly preheated preliminarily with high-temperature flue gas flowing through the smoke exhaust pipe 1 in the air inlet channel 41; then, the air after preliminary preheating flows into the air outlet flow passage 42 from the muffling hole 301 in sequence, and secondary preheating is performed when the air flows through the air outlet flow passage 42, so that the preheating effect of cold air is further improved, secondary air cooling is performed on high-temperature flue gas, and the air after secondary preheating is supplemented into the water heater shell through the air outlet part.
It can be seen that the whole structure of the inner cover 3 of the embodiment is simpler, the manufacturing materials are less, the manufacturing cost is lower, and the triple technical effects of airflow noise reduction, high-temperature flue gas cooling and air preheating are achieved.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the utility model.
Claims (10)
1. An air intake device, comprising:
a smoke exhaust pipe (1);
the smoke exhaust device comprises an air inlet outer cover (2), wherein the air inlet outer cover (2) is sleeved on the outer surface of a smoke exhaust pipe (1), an annular air cavity is formed between the air inlet outer cover (2) and the smoke exhaust pipe (1), and a plurality of air inlet parts (201) are arranged on the side wall or the top of the air inlet outer cover (2);
inner cover (3), inner cover (3) set up in the annular air cavity, and inner cover (3) will annular air cavity separates for air inlet runner (41) and air-out runner (42), air inlet runner (41) intercommunication air inlet portion (201), air-out runner (42) are located the below of air inlet runner (41) or be located air inlet runner (41) with between discharging fume pipe (1) be equipped with a plurality of bloops (301) on inner cover (3), air inlet runner (41) with air-out runner (42) pass through bloops (301) are linked together, air-out runner (42) have air-out portion.
2. An air intake device according to claim 1, wherein the top of the inner cover (3) is lower than the top of the air intake outer cover (2), the air intake portion (201) is an air intake slot or an air intake hole, all the air intake slots or all the air intake holes are circumferentially arranged at the upper end of the side wall of the air intake outer cover (2) at intervals, and each air intake slot or each air intake hole is located above the top of the inner cover (3).
3. An air intake device according to claim 1, wherein the air outlet channel (42) is located below the air inlet channel (41), and all the muffling holes (301) are uniformly arranged at intervals on the top of the inner cover (3) along the circumferential direction;
or the air outlet flow channel (42) is positioned between the air inlet flow channel (41) and the smoke exhaust pipe (1), and all the sound eliminating holes (301) are uniformly distributed on the side wall of the inner cover (3) at intervals along the height direction and the circumferential direction.
4. An air intake device according to claim 1, 2 or 3, wherein the bottom of the air intake outer cover (2) and the bottom of the inner cover (3) are both provided with openings, the lower end of the side wall of the inner cover (3) is provided with a boss (302) extending outwards, the boss (302) abuts against the lower end of the inner side wall of the air intake outer cover (2), the muffling hole (301) is formed in the side wall of the inner cover (3), and the air outlet part is formed by the bottom openings of the inner cover (3).
5. An air intake device according to claim 4, wherein the boss (302) includes a transverse section and a vertical section which are connected to each other in an inverted L shape, a radially inner side of the transverse section is integrally formed with a lower end of a side wall of the inner cover (3), the vertical section is formed by integrally bending a radially outer side of the transverse section downward, and the vertical section abuts against a lower end of an inner side wall of the air intake outer cover (2).
6. An air intake device according to claim 1, 2 or 3, wherein the bottoms of the air intake outer cover (2) and the inner cover (3) are provided with openings, the lower end of the side wall of the air intake outer cover (2) is provided with an inward extending inward flanging (202), the inward flanging (202) abuts against the lower end face of the side wall of the inner cover (3), the muffling hole (301) is formed in the side wall of the inner cover (3), and the air outlet part is formed by the inner cover (3) and the bottom openings of the air intake outer cover (2) together.
7. An air intake device according to claim 1, 2 or 3, wherein the bottoms of the air intake outer cover (2) and the inner cover (3) are provided with openings, the lower end of the side wall of the air intake outer cover (2) is provided with an inward-extending inward flange, the lower end of the side wall of the inner cover (3) is provided with an outward-extending outward flange, the outward flange abuts against the bottom surface of the inward flange, the muffling hole (301) is formed in the side wall of the inner cover (3), and the air outlet part is formed by the bottom openings of the inner cover (3).
8. An air intake device according to claim 1, 2 or 3, wherein the bottom of the air intake outer cover (2) and the inner cover (3) are provided with openings, the inner side of the top or the inner side wall of the inner cover (3) is abutted to the side wall of the smoke exhaust pipe (1), the outer side wall of the inner cover (3) is abutted to the middle part of the side wall of the air intake outer cover (2), the sound deadening hole (301) is arranged at the top of the inner cover (3), and the air outlet part is formed by the bottom opening of the air intake outer cover (2).
9. A gas water heater, comprising:
the water heater comprises a water heater shell (5), wherein an air inlet (501) is formed in the top of the water heater shell (5);
a combustion system (6), said combustion system (6) being disposed within said water heater housing (5);
a smoke evacuation structure (7), wherein the smoke evacuation structure (7) is arranged at the air inlet (501), and the smoke evacuation structure (7) is provided with a smoke evacuation channel (71);
the air intake device according to any one of claims 1 to 8, wherein the air intake device is disposed at the top of the water heater housing (5), and the smoke exhaust pipe (1) is communicated with the smoke exhaust channel (71), and the air outlet channel (42) is communicated with the inside of the water heater housing (5) through the air inlet (501).
10. A gas water heater according to claim 9, characterized in that at least part of said smoke evacuation channel (71) is embedded in said smoke evacuation pipe (1) with the inner side wall of said smoke evacuation pipe (1) abutting the outer side wall of said smoke evacuation channel (71).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121326763.7U CN215983247U (en) | 2021-06-15 | 2021-06-15 | Air inlet device and gas water heater with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121326763.7U CN215983247U (en) | 2021-06-15 | 2021-06-15 | Air inlet device and gas water heater with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215983247U true CN215983247U (en) | 2022-03-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121326763.7U Active CN215983247U (en) | 2021-06-15 | 2021-06-15 | Air inlet device and gas water heater with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215983247U (en) |
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2021
- 2021-06-15 CN CN202121326763.7U patent/CN215983247U/en active Active
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