CN115263809A - Air inlet assembly, fan and gas water heater - Google Patents

Abstract

The invention discloses an air inlet assembly, a fan and a gas water heater, and relates to the technical field of fans, wherein the air inlet assembly comprises an air inlet plate, the air inlet plate comprises a horizontal end and a protruding end arranged around the horizontal end, and the air inlet plate is provided with a first through hole; the air inlet plate comprises a shell, wherein the shell comprises a first end surface positioned on the outer side and a second end surface opposite to the first end surface, the first end surface of the shell is abutted against the protruding end, the first end surface and the second end surface are both provided with openings, an accommodating cavity is arranged in the shell, and an expansion cavity is formed between the air inlet plate and the first end surface; the regulating plate, the regulating plate passes through the elastic element setting and is in hold the intracavity, the regulating plate is provided with the air intake, the regulating plate with the casing is formed with inlet air channel. The air inlet area of the silencer can be adjusted along with the rotating speed of the fan, and the air inlet, the expansion cavity and the first through hole can form an expansion cavity silencer to reduce noise.

Description

Air intake components, fans and gas water heaters

technical field

The invention relates to the technical field of fans, in particular to an air inlet assembly, a fan and a gas water heater.

Background technique

At present, gas water heaters are generally equipped with combustion-supporting air fans below the combustion chamber to increase the heat load of the burner. Gas water heater fan side-mounted structure", you can also refer to the Chinese utility model patent "burner for gas water heater" whose patent number is ZL02226785.9.

However, the fan air volume of the above-mentioned prior art is fixed and cannot be adjusted. It cannot be adjusted according to the actual changes of gas and air to achieve the best mixing ratio. In some cases, the inherent air intake easily affects combustion, and the sound of the existing fan The overflow is more serious and the noise is louder.

Contents of the invention

The technical problem to be solved by the present invention is to provide an air inlet assembly, a fan and a gas water heater in order to overcome the defects that the air inlet of the fan cannot adjust the air intake and the fan noise is large in the prior art.

The present invention solves the above technical problems through the following technical solutions:

An air intake assembly, comprising:

An air inlet plate, the air inlet plate is provided with a first through hole;

A casing, the casing includes a first end surface located on the outside and a second end surface opposite to the first end surface, the first end surface of the casing abuts against the air inlet plate, the first end surface and The second end faces are all provided with openings, the inside of the housing is provided with an accommodation chamber, and an expansion chamber is formed between the air inlet plate and the first end face;

An adjustment plate, the adjustment plate is arranged in the accommodating cavity through an elastic element, the adjustment plate is provided with an air inlet, the adjustment plate and the housing form an air intake channel, and the adjustment plate can The lower part moves relative to the first end surface to change the air inlet passage and adjust the air inlet area.

In this solution, when the fan is working, the impeller of the fan rotates, and a negative pressure area is formed inside the fan. The adjustment plate will move relative to the first end face under the action of the pressure difference on both sides, and then the air inlet channel can be changed. By changing the air inlet channel, the air inlet can be adjusted. Area, the more displacement, the more air intake area available for air intake, the greater the air volume, the air intake area can be changed with the fan speed, the higher the fan speed, the larger the air intake area. The noise is generated by the interaction between the impeller and the air, and can escape through the path of air inlet-expansion chamber-first through hole. The air inlet, expansion chamber and first through hole can form an expansion chamber muffler to achieve noise reduction.

Preferably, the air inlet plate assembly further includes a support shaft, a second through hole is provided in the middle of the adjustment plate, a support portion is provided at the opening of the second end surface, and the support shaft passes through the first An opening on one end surface and the second through hole, one end of the support shaft is connected to the air inlet plate, and the other end of the support shaft is connected to the support portion.

In this solution, by setting the supporting shaft, the adjusting plate can slide along the supporting shaft, and the supporting shaft has a limiting effect on the adjusting plate in the non-moving direction, so that the adjusting plate is not easy to shift.

Preferably, the elastic element includes a first spring, the first spring is sleeved on the support shaft, one end of the first spring abuts against the middle position of the adjustment plate, and the first spring The other end abuts against the supporting portion.

In this solution, the adjusting plate compresses the first spring when it is stressed, and then can move along the axial direction of the support shaft to change the air inlet channel and adjust the air inlet area.

Preferably, the elastic element further includes a second spring, the second spring is arranged around the inner wall of the accommodating cavity, one end of the second spring abuts against the edge of the adjustment plate, and the second spring The other end of the spring abuts against the second end surface.

In this solution, by arranging the second spring, it is beneficial to improve the stability of the adjustment plate in the process of moving, and the adjustment plate is not easy to shift.

Preferably, the support shaft includes a first limiting portion and a second limiting portion, the first limiting portion is arranged at a position where the supporting shaft is located at the opening of the first end surface, and the second limiting portion The limiting portion is arranged at a position where the support shaft is close to the opening of the second end surface, and the adjusting plate is positioned between the first limiting portion and the second limiting portion along the axial direction of the supporting shaft. Move between departments.

In this solution, by setting the first limiting part and the second limiting part, the displacement space of the adjusting plate is effectively limited, and the displacement of the adjusting plate will not exceed the preset range, which is more stable.

Preferably, the outer peripheral portion of the adjusting plate abuts against the inner wall of the accommodating chamber.

In this solution, the air can only enter through the air inlet provided on the adjustment plate, and when the adjustment plate moves, the adjustment of the air intake area is more accurate.

Preferably, the adjustment plate includes an inner ring and an outer ring, the air inlet includes an inner ring air port and an outer ring air port, the inner ring is provided with an inner ring air port, and the outer ring is provided with an outer ring air port, when the When the adjustment plate is in an initial state, the side of the inner ring close to the first end surface abuts against the opening at the first end surface.

In this solution, when the adjustment plate is in the initial state, the airflow enters from the inner ring air outlet. When the adjustment plate moves, the inner ring will form a gap with the first end surface, and then the airflow can enter from the inner ring air outlet and the outer ring air outlet at the same time. The larger it is, the larger the air intake area will be.

Preferably, the air inlet channel includes a first air inlet channel and a second air inlet channel, the first air inlet channel is formed by the inner ring air port and the first through hole, and the outer ring air port and the first through hole The first through hole is formed with the second air inlet channel.

In this solution, in the initial state, the airflow can only enter from the first air inlet channel, and after the adjustment plate is moved, the airflow can also enter from the second air inlet channel, and the air inlet area can be adjusted.

Preferably, the adjustment plate is an umbrella structure, and the outer peripheral surface of the adjustment plate is inclined from the inner ring to the outer ring.

In this solution, the umbrella structure is adopted, and a large gap is formed between the outer ring and the outer shell to communicate with the expansion chamber. When the noise airflow enters the expansion chamber from the outlet of the outer ring, it is equivalent to improving the space of the expansion chamber in disguise. , which is beneficial to improve the noise reduction effect.

Preferably, there are a plurality of the inner ring air outlets, and the plurality of inner ring air outlets are arranged at intervals around the center of the adjustment plate, and/or, there are a plurality of the outer ring air outlets, and a plurality of the outer ring air outlets The tuyere is arranged at intervals around the center of the adjusting plate.

In this solution, by setting multiple inner ring air outlets and outer ring air outlets, the air intake is smoother and more uniform, and when some air outlets are blocked, other air outlets can still enter the air normally.

Preferably, the air inlet plate includes a horizontal end and a raised end arranged around the horizontal end.

In this solution, a specific structure of the air inlet plate is provided, and an expansion cavity can be formed between the horizontal end and the protruding end and the first end surface of the casing.

Preferably, a plurality of first through holes are provided, and the plurality of first through holes are distributed at intervals on the protruding end.

In this solution, through the plurality of first through holes, on the one hand, the air intake can be effectively ensured, and on the other hand, it is beneficial to the escape of noise, which is beneficial to noise reduction.

A fan includes the air intake assembly as described above.

In this solution, the air inlet area of the fan can be automatically adjusted according to the speed of the fan, and the noise of the fan can also be reduced.

A gas water heater includes the above-mentioned blower.

In this solution, the noise of the gas water heater is small, and the air inlet area can be automatically adjusted.

The positive and progressive effect of the present invention is that: when the fan is working, the fan impeller rotates, and a negative pressure area is formed inside the fan. The air inlet area can be adjusted. The more the displacement, the more air inlet area available for air inlet and the greater the air volume. The air inlet area can change with the fan speed. The higher the fan speed, the larger the air inlet area. The noise is generated by the interaction between the impeller and the air, and can escape through the path of air inlet-expansion chamber-first through hole. The air inlet, expansion chamber and first through hole can form an expansion chamber muffler to achieve noise reduction.

Description of drawings

Fig. 1 is a schematic structural view of an air intake assembly according to a preferred embodiment of the present invention;

Fig. 2 is a schematic diagram of the bottom structure of Fig. 1;

Fig. 3 is a schematic diagram of the cross-sectional structure of the air inlet assembly of a preferred embodiment of the present invention;

Fig. 4 is a schematic structural view of a regulating plate in a preferred embodiment of the present invention;

Fig. 5 is a schematic structural diagram of a fan according to a preferred embodiment of the present invention.

Air intake plate 100

Horizontal end 110

raised end 120

first through hole 121

Expansion lumen 130

Housing 200

first end surface 210

second end face 220

Support part 221

Support shaft 300

The first limiting part 310

The second limiting part 320

Adjustment plate 400

Inner Ring 410

Second through hole 411

Inner ring tuyere 412

Outer Ring 420

Outer ring tuyere 421

first spring 510

Second spring 520

Detailed ways

The present invention is further illustrated below by means of examples, but the present invention is not limited thereto within the scope of examples.

As shown in Figures 1-4, this embodiment provides an air intake assembly, which includes:

The air inlet plate 100, the air inlet plate 100 is provided with a first through hole 121;

The casing 200, the casing 200 includes a first end surface 210 located on the outside and a second end surface 220 opposite to the first end surface 210, the first end surface 210 of the casing 200 is in contact with the air inlet plate 100, the first end surface 210 and the second end surface 220 The two end surfaces 220 are both provided with openings, the housing 200 is provided with an accommodation cavity, and an expansion cavity 130 is formed between the air inlet plate 100 and the first end surface 210 ;

Adjusting plate 400, the adjusting plate 400 is arranged in the accommodation cavity through elastic elements, the adjusting plate 400 is provided with an air inlet, the adjusting plate 400 and the housing 200 form an air inlet channel, the adjusting plate 400 can be opposite to the first end surface 210 under the action of wind force Move to change the air inlet channel and adjust the air inlet area.

When the fan is working, the impeller of the fan rotates, and a negative pressure area is formed inside the fan. The adjusting plate 400 is affected by the pressure difference on both sides and will move relative to the first end surface 210, thereby changing the air inlet channel. By changing the air inlet channel, the air inlet area can be adjusted. The more displacement, the more air intake area available for air intake, the greater the air volume, and the air intake area can be changed with the fan speed. The higher the fan speed, the larger the air intake area. The noise is generated by the interaction between the impeller and the air, and can escape through the path of air inlet-expansion chamber 130-first through hole 121. The air inlet, expansion chamber 130 and first through hole 121 can form an expansion chamber 130 muffler, through The expansion cavity 130 can reduce the velocity of the airflow to achieve noise reduction.

Specifically, in this embodiment, as shown in FIGS. 1 and 3 , the air inlet plate 100 includes a horizontal end 110 and a protruding end 120 disposed around the horizontal end 110 . A specific structure of the air inlet plate is provided, and an expansion chamber can be formed between the horizontal end 110 and the protruding end 120 and the first end surface 210 of the casing 200 .

Wherein, a plurality of first through holes 121 are provided, and the plurality of first through holes 121 are distributed at intervals on the protruding end 120 . Through the plurality of first through holes 121, on the one hand, the air intake can be effectively ensured, and on the other hand, it is beneficial to the escape of noise, which is beneficial to noise reduction.

In other embodiments, the air inlet plate can also be configured as a spherical surface or an arc-shaped surface capable of forming an expansion cavity with the first end surface 210 .

Specifically, as shown in Figure 3 and Figure 4, the regulating plate 400 includes an inner ring 410 and an outer ring, the air inlet includes an inner ring air port 412 and an outer ring air port 421, the inner ring 410 is provided with an inner ring air port 412, and the outer ring is provided with Outer ring tuyeres 421 , when the adjustment plate 400 is in the initial state, the side of the inner ring 410 close to the first end face 210 abuts against the opening at the first end face 210 , wherein the initial state is that the fan is working. When the adjustment plate 400 is in the initial state, the air flow enters from the inner ring air outlet 412, when the adjustment plate 400 moves, the inner ring 410 will form a gap with the first end surface 210, and then the air flow can enter from the inner ring air outlet 412 and the outer ring air outlet 421 at the same time , the larger the gap, the larger the air intake area.

In this embodiment, the air inlet passage includes a first air inlet passage and a second air inlet passage, the inner ring air outlet 412 and the first through hole 121 form a first air inlet passage A, and the outer ring air outlet 421 and the first through hole 121 is formed with a second air inlet channel B. In the initial state, the airflow can only enter from the first air inlet channel A. After the adjustment plate 400 moves, the airflow can also enter from the second air inlet channel B, and the air inlet area can be adjusted. When the fan speed is faster, the The greater the pressure difference, the farther the adjustment plate 400 moves, the larger the gap between the adjustment plate 400 and the first end surface 210, and the air inlet area will increase accordingly. Among them, the noise airflow can also escape from different air inlet channels at different speeds of the fan, which is beneficial to further improve the noise reduction effect.

In other embodiments, a middle ring can also be provided between the inner ring 410 and the outer ring of the adjusting plate 400, the middle ring is provided with a middle ring tuyere, and the middle ring tuyere and the first through hole 121 form a third air inlet passage, and the air inlet area can be improved. for effective regulation.

In other embodiments, the adjusting plate 400 can also be provided with a greater number of rings, and each ring can be provided with a corresponding tuyere.

In this embodiment, the adjusting plate 400 is an umbrella structure, and the outer peripheral surface of the adjusting plate 400 is inclined from the inner ring 410 to the outer ring. Umbrella structure is adopted, and a large gap is formed between the outer ring and the outer shell 200 to communicate with the expansion chamber 130. When the noise airflow enters the expansion chamber 130 from the outlet 421 of the outer ring, it is equivalent to improving the space of the expansion chamber 130 in disguise. , which is beneficial to improve the noise reduction effect.

In this embodiment, there are a plurality of inner ring air outlets 412, and the plurality of inner ring air outlets 412 are arranged at intervals around the center of the adjusting plate 400, and/or, there are a plurality of outer ring air outlets 421, and a plurality of outer ring air outlets 421 surround and adjust The centers of the boards 400 are spaced apart. By setting a plurality of inner ring air outlets 412 and outer ring air outlets 421, the air intake is smoother and more uniform, and when some air outlets are blocked, other air outlets can still normally enter the air.

As shown in Figures 2 and 3, the air inlet plate 100 assembly also includes a support shaft 300, a second through hole 411 is provided in the middle of the adjustment plate 400, a support portion 221 is provided at the opening of the second end surface 220, and the support shaft 300 passes through Through the opening of the first end surface 210 and the second through hole 411 , one end of the support shaft 300 is connected to the horizontal end 110 , and the other end of the support shaft 300 is connected to the support portion 221 . By setting the supporting shaft 300, the adjusting plate 400 can slide along the supporting shaft 300, the supporting shaft 300 has a limiting effect on the non-moving direction of the adjusting plate 400, and the adjusting plate 400 is not easy to shift.

In this embodiment, the elastic element includes a first spring 510, the first spring 510 is sheathed on the support shaft 300, one end of the first spring 510 abuts against the middle position of the adjustment plate 400, and the other end of the first spring 510 is in contact with the supporting shaft 300. Part 221 abuts. The adjusting plate 400 compresses the first spring 510 when stressed, and then can move along the axial direction of the support shaft 300 to change the air inlet channel and adjust the air inlet area.

In this embodiment, the elastic element further includes a second spring 520, the second spring 520 is arranged around the inner wall of the accommodating chamber, one end of the second spring 520 abuts against the edge of the adjustment plate 400, and the other end of the second spring 520 abuts against the edge of the adjusting plate 400. The second end surface 220 abuts against. By arranging the second spring 520, it is beneficial to improve the stability of the adjustment plate 400 during the movement, and the adjustment plate 400 is not easy to shift.

In this embodiment, the supporting shaft 300 includes a first limiting portion 310 and a second limiting portion 320, the first limiting portion 310 is set at the position where the supporting shaft 300 is located at the opening of the first end surface 210, and the second limiting portion The portion 320 is disposed at a position of the support shaft 300 close to the opening of the second end surface 220 , and the adjusting plate 400 moves along the axial direction of the support shaft 300 between the first limiting portion 310 and the second limiting portion 320 . By setting the first limiting part 310 and the second limiting part 320, the displacement space of the adjusting plate 400 is effectively limited, and the displacement of the adjusting plate 400 will not exceed a preset range, which is more stable.

In this embodiment, the outer peripheral portion of the adjustment plate 400 abuts against the inner wall of the accommodation cavity. The air intake can only enter through the air inlet provided on the adjustment plate 400, and when the adjustment plate 400 moves, the adjustment of the air intake area is more accurate.

In other embodiments, a gap can be set between the outer periphery of the adjustment plate 400 and the inner wall of the accommodating cavity, and the air inlet channel can be formed through the gap here and the first through hole 121. The wind area is adjusted.

As shown in FIG. 5 , a fan is also provided in this embodiment, which includes the above air inlet assembly. The air inlet area of the fan can be automatically adjusted according to the speed of the fan, and the noise of the fan can also be reduced.

In this embodiment, a gas water heater is also provided, which includes the fan as above. The gas water heater has low noise, and the air inlet area can be automatically adjusted.

Although the specific implementation of the present invention has been described above, those skilled in the art should understand that this is only an example, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims (14)

1. An air intake assembly, characterized in that it comprises: An air inlet plate, the air inlet plate is provided with a first through hole; A casing, the casing includes a first end surface located on the outside and a second end surface opposite to the first end surface, the first end surface of the casing abuts against the air inlet plate, the first end surface and The second end faces are all provided with openings, the inside of the housing is provided with an accommodation chamber, and an expansion chamber is formed between the air inlet plate and the first end face; An adjustment plate, the adjustment plate is arranged in the accommodating cavity through an elastic element, the adjustment plate is provided with an air inlet, the adjustment plate and the housing form an air intake channel, and the adjustment plate can The lower part moves relative to the first end surface to change the air inlet passage and adjust the air inlet area. 2. The air intake assembly according to claim 1, wherein the air intake plate assembly further comprises a support shaft, a second through hole is provided in the middle of the adjustment plate, and a second through hole is provided at the opening of the second end surface. There is a support part, the support shaft passes through the opening of the first end surface and the second through hole, one end of the support shaft is connected to the air inlet plate, and the other end of the support shaft is connected to the support department connection. 3. The air intake assembly according to claim 2, wherein the elastic element includes a first spring, the first spring is sleeved on the support shaft, and one end of the first spring is connected to the adjusting The middle part of the plate abuts against, and the other end of the first spring abuts against the supporting part. 4. The air intake assembly according to claim 3, wherein the elastic element further comprises a second spring, the second spring is arranged around the inner wall of the accommodating chamber, and one end of the second spring is connected to the The edge portion of the adjustment plate abuts against the other end of the second spring and the second end surface abuts. 5. The air intake assembly according to claim 3, wherein the support shaft comprises a first limit portion and a second limit portion, and the first limit portion is arranged when the support shaft is located at the At the position of the opening of the first end surface, the second limiting part is arranged at the position of the support shaft close to the opening of the second end surface, and the adjustment plate is positioned at the position along the axial direction of the support shaft. Move between the first limiting part and the second limiting part. 6 . The air intake assembly according to claim 1 , wherein an outer peripheral portion of the adjusting plate abuts against an inner wall of the accommodating chamber. 7 . 7. The air intake assembly according to claim 1, wherein the adjusting plate comprises an inner ring and an outer ring, the air inlet comprises an inner ring air port and an outer ring air port, and the inner ring is provided with an inner ring air port , the outer ring is provided with an outer ring tuyere, and when the adjusting plate is in an initial state, the side of the inner ring close to the first end face abuts against the opening at the first end face. 8. The air intake assembly according to claim 7, wherein the air intake channel comprises a first air intake channel and a second air intake channel, and the inner ring air port is formed with the first through hole The first air inlet passage, the second air inlet passage is formed by the outer ring tuyere and the first through hole. 9 . The air intake assembly according to claim 7 , wherein the adjustment plate is an umbrella structure, and the outer peripheral surface of the adjustment plate is inclined from the inner ring to the outer ring. 10 . 10. The air intake assembly according to claim 7, characterized in that, there are multiple inner ring air outlets, and a plurality of inner ring air outlets are spaced around the center of the adjusting plate, and/or, the There are a plurality of outer ring air outlets, and the plurality of outer ring air outlets are arranged at intervals around the center of the adjustment plate. 11. The air intake assembly according to any one of claims 1-10, wherein the air intake plate comprises a horizontal end and a raised end disposed around the horizontal end. 12 . The air intake assembly according to claim 11 , wherein a plurality of the first through holes are provided, and the plurality of first through holes are distributed at intervals on the protruding end. 13 . 13. A fan, characterized in that it comprises the air intake assembly according to any one of claims 1-12. 14. A gas water heater, characterized in that it comprises the fan according to claim 13.

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